How to check and rectify the key links of 10 VOCS governance?

Volatile organic liquid storage tank, loading and unloading, open liquid surface, leak detection and repair (LDAR), exhaust gas collection, exhaust gas bypass, governance facilities, gas stations, non -normal operating conditions, product VOCS content, etc.

How to check and rectify in 10 key links?

Park Hua Technology High -efficiency exhaust gas purification equipment is installed in the client area

(1) Volatile organic liquid storage tank

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Existing prominent question

The selection of the storage tank and the edge of the ceiling does not meet the standard requirements, the respiratory valve leakage discharge is prominent, the sampling port and human holes such as tanks, foam generators, float edge sealing, and floating disk attachment opening (holes) are not managed. Storage tank breathing and gas collection treatment

low efficiency

Essence

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Key points for inspection

It focuses on petroleum refining, petrochemical, organic chemical, synthetic resin, synthetic fiber, synthetic rubber, land oil and natural gas mining, coal chemicals, coking, pharmaceutical, pesticide, coatings and other industries, as well as storage depot and port terminal. Sexual organic liquid storage tank (including intermediate can) tank, storage medium, volume, storage temperature, the type of floating seal sealing and governance facilities, process types and operations, and establish a list of storage tanks The leakage of the float attachment, the respiratory valve and other leaks, the concentration of the emission of the governance facilities, the emission rate, and the removal efficiency.

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Governance requirements

Enterprises shall be selected in accordance with the requirements of the standard, and according to the real vapor pressure, storage volume of the storage volatile organic liquid, the storage and tank volume is selected. In the key areas storage of gasoline, aviation kerosene, petroleum oil, and inner floating top can not be collected in the top gas of the inner floating top of benzene, toluene, and diene, it is advisable to be equipped with a new high -efficiency floating disk and accessories.

“Fully connecting high -efficiency floating set+secondary sealing”

structure.

Encourage the use of low leaks of storage valve and emergency pressure leakage valve; inner floating top cans that fix the top can or build an organic exhaust gas treatment facilities should be equipped with pressure monitoring equipment.

50%

When designing the pressure, the detection value of the breathing valve and the emergency pressure leakage valve should not exceed

2000 μmol/mol

Fully consider abnormal emissions such as the tank deformation or the damage to the floating tray, and the damage of the bear accessories, and encourage the exhaust gas to collect an air -induced device and the treatment device

Set the redundant load

; If the storage tank exhaust recycling cannot be discharged stably after the recycling process, it shall further optimize the governance facilities or implement in -depth treatment; encourage enterprises to collect and deal with the internal floating top tank exhaust pipe.

The tank can be kept intact,

There should be no holes or gaps

(Except for the edge of the internal floating top can); except for sampling, measurement, routine inspection, maintenance and other normal activities,

The opening (holes) of the storage attachment should be kept closed.

(2) Volatile organic liquid loading and unloading

The collection efficiency of the upper loading exhaust gas is low; most of the exhaust gas in the loading gas is treated with the “condensation+adsorption” process. Due to the inadequate operation and maintenance, it is difficult to stabilize the standard discharge; Oil and gas recovery facilities are idle due to the fact that the ship is not equipped with an oil and gas recovery interface or the interface is not matched.

以石油炼制、石油化工、有机化工、煤化工、焦化等行业以及储油库、港口码头为重点,重点排查汽油(包括含醇汽油、航空汽油)、航空煤油、原油、石脑油及苯、 Toluene, dystershopine and other loading and unloading

Material type, loading capacity, oil and gas recovery, loading method, sealing type, compression method and management facility construction, process type and operation

, Establish a loading and unloading checklist; check the tanker’s hole cover, oil and gas recycling coupling valve, the bottom loading of the rapid connection of organic exhaust gas recycling, the top immersion loaded sealing cover, oil and gas recycling pipeline flange and other sealing points leakage Eat emissions and removal efficiency.

Car tankers adopt a suitable loading method in accordance with the standards, and promote the use of sealing fast connectors.

The absorbent of the exhaust gas treatment facility should be regenerated or replaced in a timely manner. Currencing temperature and related parameters such as system pressure, gas flow, and loading capacity shall meet the design requirements; if the loading operation exhaust cannot be stable after recycling, it shall further optimize the governance facilities or implementation Deep governance.

The docks with oil -based oiling functions above the 10,000 -ton level have accelerated the construction of oil and gas recycling facilities, and 8,000 tons and above oil tanks will accelerate the construction of a closed oil and gas collection system and inert gas system.

Carry out the collection and governance of the railway tanker warehouse, and encourage the cleaning of railway tankers, car tanks and ship oil compartment, and compressor processing and control.

(3) Open the liquid surface and relax

The process of losing, storage and processing of VOCS wastewater is not closed or closed in accordance with the standard requirements, and the discharge of VOCS discharge on the open liquid surface is not effectively collected; high, low concentration VOCs exhaust gas is not collected; Realize stable and upset emissions.

Focusing on petroleum refining, petrochemical, synthetic resin, coal chemical industry, coking, pharmaceutical, pesticide and other industries, investigate containing VOCS wastewater production nodes, quantity, wastewater collection and storage treatment facilities The process and operation of the process, as well as the leakage and repair of the open circulating cooling water system, and establish a list of open liquid surface inspections.

The inspection device area contains VOCS wastewater collection and improvement ponds, transport ditch, storage, processing facilities, and sludge, sludge, residue storage tanks and other exhaust gas density closure collection, and detect the concentration of the emission of facilities.

石油炼制、石油化工企业用于集输、储存、处理含VOCs废水的设施应密闭;农药原药、农药中间体、化学原料药、兽药原料药、医药中间体企业废水应密闭输送,储存、 The treatment facility should be closed in the aeration pool and its previous cover; other industries detect the VOCS concentration above the open liquid surface according to the standard requirements to determine whether the closed collection measures are taken.

By taking measures such as closed pipelines and other measures to gradually replace the open transmission methods such as floor drain, ditch, canal, well, etc., the number of water collection wells and oil -containing tanks should be reduced; oil -containing sewage should be transmitted closed and encouraged to set water sealing, water collection wells, enhanced pools or no movement. The oil -containing sewage tank of the component can reduce exhaust emissions by installing floating top cover or overall confinement.

After the pool body is closed, the micro -negative pressure is kept. The U -shaped tube or sealing film on -site detection method can be used to check the internal negative pressure of the pond body. The sealing effect is poorly rectified.

High -concentration VOCS exhaust gas generated by sewage treatment venue water wells (pools), regulating pool, oil separation pool, air floating pool, and concentrated pond mixed with oil -containing residue should be collected and treated separately. Essence

Low concentration VOCS exhaust gas collection and processing to ensure the discharge of standards.

The average sewage tank, oil tank, float tank and acidic water tank, ammonia tank organic waste gas encourages collection and treatment.

The coking industry is preferentially adopted to use dry coke; those who use wet extinguishers are prohibited from using wastewater to turn off the scrap water that has not been processed or processed.

For the opening of the open -cycle cooling water system, the total organic carbon (TOC) concentration of the circulating cooling water flowing through the heat exchanger imports and exports every 6 months is detected. repair.

(4) Leakage detection and repair

LDAR should be carried out without launching, LDAR is not carried out in accordance with the standard requirements, and the sealing points are incomplete. The detection operations and ledger records do not meet the requirements of related technical specifications. LDAR detects the poor quality of data or even falsify.

Petroleum refining, petrochemical, organic chemical, synthetic resin, coal chemical industry, coking, pharmaceutical, pesticide, paint and other industries inspect the full coverage of enterprises, focus on the collection of tanks, loading, production process exhaust gas collection and transportation pipelines, governance facilities sealing The coverage of points; check the frequency of LDAR, the repair of the leakage point, the electronic account record record, the data entry of the LDAR information system; focus on carrying out random spot tests for dynamic seals such as pressure device, valves, pumps, etc. Auxiliary methods are screened.

If LDAR work is not carried out at the prescribed time and frequency, it is found that there are no more than 100 sealing points.

Two or more (excluding)

If the sealing point exceeds the concentration of the leakage, the sealing point covers incomplete coverage, the ledger records are missing, and the instrument operation does not meet the specifications. Obvious leaks such as seepage, drops, and pipeline damage occur occur.

All enterprises of petroleum refining, petrochemical, and synthetic resin industries should carry out LDAR work; equipment and pipeline components with gaseous, liquid VOCS materials in other industry companies

Great or equal to 2000

For LDAR work. VOCS collection pipelines, governance facilities, and sealing points connected to tanks are included in the detection range.

In accordance with the requirements of relevant technical specifications, carry out leak detection, repair, quality control, recording management and other work.

Encourage large -scale petrochemicals, chemical enterprises and chemical parks to set up a testing team, carry out LDAR work or conduct random inspections on third -party testing results.

Encourage enterprises to add strict leakage identification criteria; strengthen inspection on sealing points such as pumps, spare pumps, regulating valves, mixers, and opening pipelines; regularly use infrared imagingers such as infrared imagingers.

Encourage key regional petrochemicals and cities and industrial parks with centralized industries to establish LDAR information management platforms to carry out unified supervision.

(5) exhaust gas collection facilities

Open production is not equipped with collecting facilities, no quality collection of VOCS exhaust gas, exhaust gas collection system exhaust hood (gas collection) control wind speed does not meet the standard requirements. Strictly wait.

Check whether the workshop and equipment are closed, whether the organic waste gas is “acceptable”, whether the high and low concentration of the exhaust gas is collectively collected, etc., whether the design of the exhaust gas collection system rowing cover meets the standard requirements, and use the wind speed instrument and other equipment to carry out on -site spot testing;

Check whether there is a visible damage in the transportation system of the exhaust gas collection system;

Check whether the exhaust gas collection system is running in a negative pressure state.

The production link of VOCS is preferentially adopted by closed equipment, operating in a closed space or using a full -closed gas hood collection method, and maintaining negative pressure.

If the dust -free level requires that the workshop needs to be set to positive pressure, the two -layer overall closed collection space with the inner layer positive pressure and the slight negative pressure of the outer layer should be constructed.

For enterprises with local collection methods, VOCS without tissue discharge positions from the farthest of the exhaust coverage of the exhaust gas collection system control the wind speed of not less than 0.3m/s; the promotion of the production line or equipment to set the compartment, the collection of air volume should be Make sure that the compartment keeps slightly negative. When the exhaust gas generates a lot and the distance between each other is far away, on the basis of meeting the design specifications and wind pressure balance, multiple sets of collecting systems or relay fans should be set up appropriately. The transportation pipeline of the exhaust gas collection system should be closed and no damage.

The coking industry strengthens the coke oven sealing inspection, and repairs and repairs the deformation furnace door and top furnace lid in time; strengthen the supervision of coking furnace operating conditions, and timely repair the coking furnace walls.

Pharmaceuticals, pesticide, coatings, ink, adhesives and other intermittent production processes with more intermittent production processes should take closed measures, material transportation, mixing, solid fluid separation, drying, filling, sampling, etc. In principle, the VOCS material transportation uses gravity flow or pumping method; organic liquid feed encourages use the bottom and immersion control method; solid material investment plus the use of closed -type feed devices.

The industrial coating industry is constructed to build a closed paint room, and the large -scale components (ships and steel structures) are implemented in section coating, and the exhaust gas is collected and controlled. For outdoor painting, low (none) that meets the requirements of national or local standards should be adopted. VOCS content coatings, or use mobile exhaust gas collection governance facilities.

The printing, composite, and coating process of the packaging and printing industry is closed into the transformation, except for the comprehensive use of VOCS quality that is less than 10%of the original auxiliary materials.

Encourage oil refining enterprises to carry out the collection and treatment of exhaust gas such as cold focus water and scorching water. The use of VOCS mass is more than or equal to 10%of coatings, inks, adhesives, diluents, cleaning agents and other materials storage, deployment, transfer, transportation and other links should be closed.

(6) Organic exhaust gas bypass

The number of barrier and governance facilities in production facilities and governance facilities is large, and the pipeline settings are hidden. The bypass is not included in daily supervision. The width flue and valve leakage are serious. Direct and stolen stolen ducts, coke oven heat preparation chimneys, and some enterprises for pseudo -by -road management accounts or tampered with the central control system bypass to open parameters.

Focusing on the top of the production workshop, the top of the production device, the spare chimney, the abandoned chimney, the emergency emissions port, the governance facilities (including the boiler, furnace of the furnace, etc. with the function of the exhaust gas treatment function) , Register one by one;

Check the company’s bypass management ledger records, install flowmeters, automatic monitoring equipment, seal sealing of the bypass, cross -road valve opening method, central control system bypass signal parameter preservation situation, bypass reserve management facilities construction construction Situation, etc., establish an organic waste gas bypass inspection list;

Portable equipment was used to test on -site inspection of the exhaust emissions of bypass.

For the system assessment of the production system and governance facilities, in addition to ensuring emergency bypass that must be retained by production safety, thorough demolition, cutting, physical isolation, etc. should be taken. Pipelines, etc.).

Industrial coating, packaging and printing and other solvents use industries in industries in the production workshop in the production workshop of the production workshop in principle. For emergency bypass that really need to be retained, enterprises should report to the local ecological environment department, keep closed and lead sealing in non -emergency conditions, strengthen supervision by installing automatic monitoring equipment, flowmeters and other methods, and preserve historical records, turn on the opening, open up After that, you should report to the local ecological environment department in time to make a record of accounts;

The valve corrosion and damage should be replaced in time, and the leakage rate is encouraged by a valve with a leakage rate of less than 0.5%;

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Existing prominent question

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Existing prominent question

Existing prominent question

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Key points for inspection

Key points for inspection

Key points for inspection

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10个VOCs治理关键环节,如何排查整治?

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Governance requirements

Governance requirements

Governance requirements

Governance requirements

Governance requirements

Enterprises with central control systems are constructed, and sensing valves are encouraged to set up sensory valves, valve opening status, openness and other signals to access the central control system, and historical records are stored for at least 5 years.

Under the premise of ensuring safety, it is encouraged to deal with the exhaust gas to prevent direct discharge.

(7) Organic exhaust gas treatment facilities

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Existing prominent question

The design of governance facilities is irregular and does not match the production system; inefficient technologies such as photocatalytic, optical oxidation, and low -temperature plasma accounted for poor proportion and poor governance effects; the quality of governance facilities is not uniform, and the phenomenon of governance and invalid governance are prominent; governance facilities; governance facilities The operation is not standardized and the regular maintenance is not in place.

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Key points for inspection

For the construction of governance facilities, process types, processing capabilities, operating time, operating parameters, consumables or pharmaceutical replacement conditions, energy consumption conditions, waste catalytic, waste absorbers, waste absorbers, waste organic solvents and other secondary pollution and other secondary pollution Check the standardized disposal of the material, establish a list of VOCS governance facilities; inspect the VOCS emission concentration, emissions rate, and governance facilities from the inspection enterprise.

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Governance requirements

New governance facilities or implementation of existing governance facilities shall reasonably choose governance technologies according to the characteristics of discharge exhaust gas, VOCS components and concentrations, and production conditions. The combination process of species technology; except for the treatment of dislike odor, generally does not use low -temperature plasma, photocatalytic, optical oxidation and other technologies.

Strengthen operation and maintenance management, so that the governance facilities are “first stopped and then stop” than the production equipment. After the governance facilities meet the normal operation conditions, the production equipment can be started. After the production equipment is stopped and the residual VOCS exhaust gas is collected, the control can be stopped. Facilities; timely clean up, replace absorbers, absorbers, catalysts, heat storage, filter cotton, lamp tube, electrical elements and other governance facilities to ensure that the facilities can operate stably and efficiently.

Do a good job of starting and suspension of production equipment and governance facilities, inspection and repair conditions, maintenance and replacement of governance facilities, and disposal, and other ledger records; Organic solvents, etc., should be cleared in time, and they should be handled by hazardous waste.

Enterprises that adopt activated carbon adsorption process should design purification technology and equipment according to the characteristics of the exhaust emissions, according to the relevant engineering technical specifications, so that the exhaust gas has sufficient residence time in the adsorption device. Replace in time. When using granular activated carbon as an adsorbent, its iodine value should not be less than 800mg/g; when the honeycomb activated carbon is used as an adsorbent, its iodine value should not be less than 650 mg/g; 1100 square meters/g (bet method). Disposable carbon adsorption process should be used as adsorbent. Activated carbon and activated carbon fiber products should provide product quality proof materials when selling.

Enterprises with a catalytic combustion process should use qualified catalysts and add them in full, and the design of the catalyst bed layer should be less than 40000H-1. Those who use non -continuous absorption and disconnection should be used in accordance with the design requirements. Vocs that are absorbed and adsorbed in a timely manner should be used to ensure that the use of high -efficiency treatment process should be discharged. The combustion temperature of the heat storage burning device (RTO) is generally not less than 760 ° C, and the combustion temperature of the catalytic combustion device (CO) is generally not less than 300 ° C. The related temperature parameters should be automatically recorded and stored.

Conditional industrial parks and corporate clusters encourage the construction of centralized painting centers, decentralized adsorption and concentrated decircation models of activated carbon concentrated regeneration centers, solvent recovery centers and other VOCS “Green Island” projects to achieve centralized and efficient treatment of VOCS.

(8) gas station

The construction of the oil and gas recycling system of the gas station does not meet the standard requirements, the operation and operation of the operation and operation will cause the oil and gas to be leaked. The operating indicators of the oil and gas recovery system do not meet the standard. obvious.

Focusing on the construction and operation method of the gas station unloading oil and gas recovery system, the closed conditions of the oil and gas recovery system of the oil storage area, and the operating status of the refueling gas recovery system, use on -site inspection and video video viewing to check the construction of oil removal pipes, oil and gas recovery tube construction, and unloading Whether the oil and gas recycling operation meets the requirements of the “Emissions Emissions of the Gas Station of the Gas Station”; use a portable detection instrument to detect the oil -removing port, oil and gas recovery port, artificial oil port cover, liquid collecting tank (if there are) ports, discharge pipe pressure/ pressure/ discharge pipe pressure/ The vacuum valve (P/V valve, when the state is closed), the oil and gas recovery pipeline, the oil and gas recovery system, the coupling valve and other oil and gas recovery of the oil and gas recovery of the oil and gas concentration is less than 500 μmol/mol; Treatment of the concentration of the device emission port and the non -organized oil and gas concentration of the gas station boundary.

The gas stations shall comprehensively establish the daily operation and management system of the oil and gas recovery system that covers all the standards, and establish a periodic oil and gas recovery system related parts inspection and maintain account records.

The diameter and operation of the oil -removing interface, oil and gas recovery interface, oil -removing hose joint and operation shall meet the standard requirements. Underground oil tanks should be closed with electronic liquid level instruments. Except for the necessary instrumental calibration, inspection spot checks, maintenance, etc., artificial oil shall be performed.

The manual valve of the gasoline emission pipe without P/V valves should be closed. Emergency opening should report the local ecological environment department in a timely manner and maintain it in time.

Oil and gas treatment devices should be kept normally, and they must not be set to manual mode or turn off at will. The closed point of the oil and gas recovery system with an exceptional concentration of oil and gas leakage shall be discharged by reaching standards by replacing the sealing ring, sealing method, and equipment parts. For the reasons for the gas -liquid -to -be -standard refueling gun, to maintain the fuel and gas recovery system to reach the standard operation by replacing gas masks, refueling guns or vacuum pump components, and regulating air -to -air recovery systems.

Encourage gas stations with a annual sales volume of 5,000 tons and above, and gas stations incorporated into the list of local key sewage units to build an online monitoring system for oil and gas recovery.

(9) Non -normal working conditions

The non -normal operating conditions such as starting work, inspection and maintenance, equipment debugging, and production abnormalities are not in place; some enterprises are open, refund, return, empty, dry, etc. Without being in place, the organic waste gas was not fully burned, and VOCs discharged a lot.

Check non -normal operating conditions such as operation and control, inspection and maintenance, equipment debugging, production abnormalities, etc. , Governance, monitoring and monitoring. Check the installation of the torch monitoring system, ignite facilities and torch working status account records.

Petrochemical and chemical enterprises report to the local ecological environmental department for inspection and maintenance plans in advance, formulate regulations for non -normal operating VOCS management and control procedures, and operate strictly in accordance with the regulations. During the start and stop of the enterprise, the VOCS exhaust gas generated by returning, cleaning, blowing, etc. should be collected in time to ensure the standard requirements. When stopping the work and refund, it should be closed and scanned to maximize the recycling material; the generated non -condensation should be classified into the pipe network, and the oil tanks and sewage treatment of sewage are Facilities, acid water tanks, etc. are collected and disposal.

In the case of difficulty establishing steamed tanks, cleaning, and blowing products, it can be used to process the exhaust gas emission discharged by mobile devices. After all the products of steamed tanks, cleaning, and blowing products are completed, they can stop the supporting facilities, air cabinets, torches, etc. Strengthen the monitoring of the air gas VOCS concentration. Generally, the lower limit of the lower limit of 200 μmol/mol or 0.2%of the explosion is generally carried out to reduce VOCS emissions during equipment disassembly.

During the suspension and inspection and maintenance stage, environmental protection devices, air cabinets, torchs, etc. should complete the inspection and repairs before the production of the production device; when booting the feed, the replaced exhaust gas should be discharged into the torch system or used other effective methods for treatment; the initial construction should The unqualified products generated during the stage should be properly handled and cannot be discharged directly. During the inspection and maintenance of the enterprise, the local ecological environment departments can use sailing and grid monitoring to strengthen supervision. If necessary, the supervision of the factory can be implemented.

Petrochemical and chemical enterprises should strengthen the recycling of combustible gas. The torch combustion device is generally only used for emergency treatment and does not serve as daily air pollution treatment facilities. Enterprises should install temperature monitoring of temperature monitoring, exhaust gas flowmeter, and gas flowmeter meter at the torch system according to standard requirements. Wait, encourage the installation of thermal value detector; the torch discharge exhaust thermal value does not meet the requirements when the heat value does not meet the requirements.

(10) Product VOCS content

The VOCS content limit standards of coatings, inks, adhesives, cleaning agents and other products are still not executed, and the market still has unsuccessful products; low (no) VOCS content coatings, ink, adhesives, and cleaning agents have a low ratio.

Check the use of coatings, inks, adhesives, cleaning agents and other enterprises containing VOCs raw and auxiliary materials, and urge enterprises to record the product name, VOCS content and use of VOCs raw and auxiliary materials, etc., and establish a management account. Regularly conduct random inspections of the production, sales, imports, and use of VOCS products, check the product VOCS content test report, and test some batch products.

Industrial painting, packaging printing, shoe leather bag manufacturing, bamboo wood products, electronics and other key industries must increase the source of the original and auxiliary materials of the VOCS content of the VOCS content, and strengthen the application of mature technology substitutes. Production enterprises such as coatings, inks, adhesives, cleaning agents and other manufacturers should be equipped with product labels when they leave the factory, indicating the product name, use area, construction ratio, and VOCS content. Security data table.

The state -owned enterprises and government investment construction projects with large volumes of VOCS products shall be self -inspected or entrusted to socialized testing agencies to conduct random inspections, and encourage other enterprises to actively entrust social testing institutions to conduct random inspections.

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Key points for inspection

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Governance requirements

Governance requirements

Governance requirements

In order to answer your doubts, the above is what we have organized about Stainless Steel Horizontal Storage Tank for Liquid, hope it can help you.