CN114435782A - Storage tank and storage system capable of effectively reducing pollutant emission - Google Patents
Storage tank and storage system capable of effectively reducing pollutant emission Download PDFInfo
- Publication number
- CN114435782A CN114435782A CN202011198945.0A CN202011198945A CN114435782A CN 114435782 A CN114435782 A CN 114435782A CN 202011198945 A CN202011198945 A CN 202011198945A CN 114435782 A CN114435782 A CN 114435782A
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- Prior art keywords
- storage tank
- tank
- air
- air bag
- shell
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- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 14
- 231100000719 pollutant Toxicity 0.000 title claims abstract description 14
- 238000007667 floating Methods 0.000 claims abstract description 37
- 238000012544 monitoring process Methods 0.000 claims abstract description 18
- 239000003921 oil Substances 0.000 claims description 23
- 239000000341 volatile oil Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 239000013589 supplement Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 47
- 238000000034 method Methods 0.000 description 16
- 239000002912 waste gas Substances 0.000 description 11
- 239000000047 product Substances 0.000 description 6
- 230000029058 respiratory gaseous exchange Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 239000012855 volatile organic compound Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000000346 nonvolatile oil Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000011272 standard treatment Methods 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/22—Safety features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/34—Large containers having floating covers, e.g. floating roofs or blankets
- B65D88/36—Large containers having floating covers, e.g. floating roofs or blankets with relatively movable sections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/22—Safety features
- B65D90/28—Means for preventing or minimising the escape of vapours
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a storage tank and a storage system capable of effectively reducing pollutant emission. The storage tank comprises a shell, a floating disc and an internal air bag; the floating disc and the internal air bag are positioned in the shell; the bottom of the inner air bag is provided with an air interface; the bottom of the internal air bag is positioned on the floating disc and is fixedly connected with the floating disc; the shell is provided with a pressure monitoring system and a tank wall air interface; the pressure monitoring system is positioned on the top of the storage tank, and the tank wall air interface is positioned at the lower part of the storage tank shell; the air interface of the tank wall is communicated with the air interface at the bottom of the air bag through a hose. The storage tank does not discharge pollutants to the environment, and has the advantages of safety, reliability, simple equipment and the like.
Description
Technical Field
The invention relates to the technical field of environmental protection and energy conservation, in particular to a storage tank and a storage system for chemicals and oil products, which can effectively reduce the emission of pollutants.
Background
During storage and transportation of oil and chemicals, large amounts of oil and gas or Volatile Organic Compounds (VOCs) are lost. Not only wastes a large amount of oil gas resources, but also pollutes the environment and influences the health of operators and surrounding environment personnel. Traditionally, for oil and organic chemical storage tanks with high vapor pressure, a floating plate is installed in the tank to build an external floating roof tank or an internal floating roof tank to control the discharge of VOCs. The floating plate is arranged to meet the discharge requirement, and the outer floating roof or the inner floating roof tank is usually subjected to closed air entraining treatment, so that the introduced gas is subjected to VOCs recovery or high-temperature oxidation treatment. The recovery technology comprises a condensation method, an absorption method, an adsorption method, a combined process thereof and the like. The high-temperature oxidation method comprises catalytic oxidation, regenerative oxidation, thermal oxidation and the like.
CN201010222137.3 discloses a method for treating foul waste gas discharged from a storage tank, wherein the waste gas discharged from the storage tank is introduced into a waste gas treatment device, when the waste gas treatment device operates, the waste gas firstly passes through a low-temperature absorption tower, and the waste gas is absorbed by distillate oil to purify most of hydrocarbons and most of organic sulfides; the waste gas passing through the absorption tower enters a loop desulfurization reactor for purification, and the purified gas passing through the loop desulfurization reactor is discharged by an exhaust funnel. The invention has the advantages of simple process, easy obtaining of the absorbent, high purification efficiency and the like. Is suitable for treating various chemical storage tank respiratory gases. However, the method for treating the storage tank exhaust gas has the problems of large device investment, substandard purified gas and the like.
CN200910011767.3 discloses a storage tank for reducing exhaust emission, which comprises a tank body, wherein the upper part inside the tank body is a gas phase space, the top inside the tank body is provided with a temperature control system, the temperature control system comprises an air conditioner system and a control device, the air conditioner system can refrigerate and heat and is divided into an in-tank machine and an out-tank machine, the control device detects the temperature of the gas phase space inside the storage tank, and the control device adjusts the operation of the air conditioner according to the comparison between the detected gas phase space temperature and the set control temperature of the gas phase space inside the storage tank. The storage tank can reduce or eliminate the phenomena of air suction and exhaust caused by the change of the gas phase temperature in the storage tank due to the change of the environmental temperature, greatly reduce the discharge amount of waste gas of the storage tank, and particularly can greatly reduce the discharge amount of the waste gas caused by small breath; in addition, the method has the biggest problem that the problem of exhaust gas generated in the process of large breath of the storage tank cannot be solved.
ZL 200820012769.5 discloses an elasticity breathing gas storehouse, and elasticity breathing gas storehouse bottom is seal structure, and fixed seal structure upper portion sets up sealed soft material air pocket, and the air pocket outside sets up the protection screen panel, and the air pocket hugs closely at the protection screen panel inner wall when the air pocket is inflated, and the protection screen panel is as an organic whole with bottom fixed seal structure fixed connection. The utility model is used for the storage tank district can effectively reduce exhaust emission and reduce the protection gas quantity simultaneously. But this elasticity breathing gas storehouse sets up in the storage tank district, and the elasticity breathing gas storehouse exists and takes up an area of greatly, and its wind load also influences the safe normal use of elasticity breathing gas storehouse.
The existing storage tank is mainly a vault tank, an inner floating roof tank and an outer floating roof tank, air suction and exhaust processes exist in the storage tank breathing process, the storage tank has the phenomenon of pollutant discharge, the discharged gas needs to be subjected to standard treatment, and the problems of more complex treatment process, high treatment cost and the like exist. In addition, in order to intensively treat the storage tank exhaust gas, the storage tank gas phase space needs to be communicated, so that the safety problem of the tank field needs to be considered when the exhaust gas is intensively treated.
Disclosure of Invention
Aiming at the defects of a device for recovering and treating the waste gas discharged by a storage tank in the prior art, the invention provides the storage tank and the storage system for effectively reducing the discharge of pollutants, wherein the storage tank does not discharge pollutants to the environment, and has the advantages of safety, reliability, simple equipment and the like.
The invention provides a storage tank capable of effectively reducing pollutant emission, which comprises a shell, a floating disc and an internal air bag, wherein the floating disc is arranged on the shell;
the floating disc and the internal air bag of the storage tank are positioned inside the shell;
the bottom of the inner air bag is provided with an air interface; the bottom of the internal air bag is positioned on the floating disc and is fixedly connected with the floating disc;
the shell is provided with a pressure monitoring system and a tank wall air interface; the pressure monitoring system is positioned on the top of the storage tank, and the tank wall air interface is positioned at the lower part of the storage tank shell;
the air interface of the tank wall is communicated with the air interface at the bottom of the air bag through a hose.
Further, the diameter of the floating disc is about 100 mm-400 mm smaller than that of the shell.
Further, the tank wall air interface is used for introducing air into the inner air bag or discharging air in the inner air bag out of the air bag.
Further, the pressure monitoring system is used for monitoring the gas pressure in the storage tank.
Further, the hose is a stainless steel hose or an oil-resistant rubber hose.
Further, the storage tank is a vault tank.
In the storage tank, the shell, the floating disc and the internal air bag divide the storage tank into three areas; the first area A is positioned below the floating plate, and the storage tank is used for storing oil medium when working; the second area B is positioned in the inner air bag area above the floating disc, and the storage tank is used for storing air when in work; the third region C is located between the reservoir housing and the inner bladder for storing volatile oil gas generated in the reservoir.
In a second aspect, the present invention provides a storage system for effectively reducing pollutant emissions, comprising an abatement tank as described above.
The storage system comprises a storage tank, an air inlet fan, a control module and the like; the air inlet fan is used for introducing air in the atmosphere into the internal air bag (area B), and the outlet of the air inlet fan is respectively communicated with the inlet of the exhaust valve and the air interface of the tank wall through a tee joint; the control module comprises a pressure monitoring system, an exhaust valve and an air inlet fan start-stop control module.
Further, according to the monitoring result of the pressure monitoring system, the control module can be used for controlling the operation of the exhaust valve or the air inlet fan start-stop control module and realizing the discharge or supplement of the gas in the air bag.
The working principle of the storage tank and the storage system is as follows:
the air inlet fan is controlled to start and stop and the exhaust valve is controlled to be switched on and off through the oil gas pressure in the storage tank, the amount of air in the space of the region B can be changed, the size of the oil gas storage space of the region C in the shell is adjusted, and the purpose that the storage tank does not have the oil gas to be discharged outside is achieved. When the volume of oil in the area A in the storage tank is increased, the floating disc rises, the gas pressure in the area C is increased, or the temperature in the storage tank is increased to cause the gas pressure in the area C to be increased, until the pressure in the area C is increased to an exhaust pressure value, the control module opens the exhaust valve, and the air in the area B is exhausted to the atmosphere through the air interface at the bottom of the air bag, the hose, the air interface on the tank wall and the exhaust valve; when zone C is vented so that its pressure drops to a steady pressure, the vent valve is closed. The control module exhaust pressure value can be set to any value between 0.8kPa and 1.2kPa, and the stable pressure value can be set to any value between 0.4kPa and 0.7 kPa.
When the gas pressure of the area C in the storage tank is reduced to the suction pressure value, the control module starts the air inlet fan to send air in the atmosphere to the area B in the air bag, the pressure in the area B is increased, the space of the area C is reduced, the gas pressure of the area C is increased, and when the gas pressure of the area C is increased to the stable pressure, the control module stops the air inlet fan. The control module air suction pressure value can be set to any value between 0kPa and 0.2 kPa.
Compared with the prior art, the storage tank and the storage system thereof have the following advantages:
1. according to the storage tank disclosed by the invention, the balance between the space and the pressure of three areas in the storage tank is realized by changing the volume of the air bag stored in the storage tank, so that the safe and stable operation of the storage tank is realized. Volatile oil gas and air of the oil product are isolated by the air bag in the shell, so that the non-volatile oil gas of the storage tank is exhausted to the atmosphere, and the effect of zero emission of waste gas of the storage tank is realized.
2. According to the storage tank, the oil product and the air are sealed and separated, so that the oil gas generated by volatilization of the oil product is pure oil gas (not containing air), the gas is free of explosiveness, and the volatilized oil gas can be safely controlled.
3. The storage tank has the characteristics of energy conservation, environmental protection, simple process and safe operation in the process of storing oil products or chemicals.
Drawings
FIG. 1 is a schematic diagram of a storage tank and storage system according to the present invention.
In the figures, each numeral corresponds to a label: the device comprises a shell 1, an internal air bag 2, a floating disc 3, a hose 4, a pressure monitoring system 5, an exhaust valve 6, an air inlet fan 7, a control module 8, an air interface 9 and a tank wall air interface 10.
Detailed Description
The tank and storage system of the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the storage tank of the present invention includes a case 1, and a floating plate 3 and an inner bag 2 are provided inside the case 1. The inner air bag 2 is positioned above the floating plate 3, and the bottom of the air bag is fixed on the floating plate. The diameter of the inner air bag is consistent with that of the floating plate. The bottom of the inner air bag 2 penetrates through the floating disc and is provided with an air interface 9. The upper or top portion of the housing 1 is provided with a pressure monitoring system 5. The shell 1 is also provided with a tank wall air interface 10, and the tank wall air interface 10 is communicated with an air interface 9 at the bottom of the air bag through a hose 4. The diameter of the floating plate 3 is slightly smaller than that of the shell 1. Air can be introduced into or discharged from the inner airbag through the tank wall air connection 10, the hose 4 and the air connection 9, so that the gas filling amount of the inner airbag 2 can be controlled.
The floating plate 3, the inner air bag 2 and the housing 1 divide the space in the tank into three regions: a region a below the floating plate 3, a region B inside the inner bag 2, and a region C between the housing 1 and the inner bag 2.
As shown in fig. 1, the storage system of the present invention comprises an energy-saving storage tank, a control module 8, an intake air blower 7 and an exhaust valve 6. The pressure monitoring system 5, the air inlet fan 7 and the exhaust valve 6 form a control module 8.
With reference to fig. 1, the working process of the storage system of the present invention is as follows:
when the volume of oil in the area A in the storage tank is increased, the floating disc 3 rises, the gas pressure in the area C is increased, or the gas pressure in the area C is increased due to the temperature rise in the storage tank; when the pressure in the area C increases to the exhaust pressure value, the control module 8 opens the exhaust valve 6, and the air in the area B in the air bag is exhausted to the atmosphere through the air interface 9 at the bottom of the air bag, the hose 4, the air interface 10 at the wall of the air bag and the exhaust valve 6. When zone C is vented so that its pressure drops to a steady pressure, the control module 8 commands the exhaust valve 6 to close. The exhaust pressure value of the control module 8 can be set to any value between 0.8kPa and 1.2kPa, and the stable pressure value can be set to any value between 0.4kPa and 0.7 kPa.
When the gas pressure in the area C in the storage tank is reduced to the suction pressure value, the control module 8 starts the air inlet fan 7 to send the hollow gas to the area B in the air bag 2; at this time, the pressure in the area B increases, the space in the area C decreases, the gas pressure increases, and when the gas pressure in the area C increases to a stable pressure, the control module 8 turns off the air inlet fan 7. The air suction pressure value of the control module 8 can be set to any value between 0kPa and 0.2 kPa.
The storage tank and the storage system for effectively reducing pollutant emission basically cannot emit pollutants to the environment, and have the advantages of safety, reliability, simple equipment and the like. The storage tank and the storage system are particularly suitable for storing light oil products or chemicals or the storage tank.
Claims (10)
1. A storage tank effective in reducing pollutant emissions, the storage tank comprising a shell, a float pan, an internal bladder;
the floating disc and the internal air bag of the storage tank are positioned inside the shell;
the bottom of the inner air bag is provided with an air interface; the bottom of the air bag is positioned on the floating disc and is fixedly connected with the floating disc;
the shell is provided with a pressure monitoring system and a tank wall air interface; the pressure monitoring system is positioned on the top of the storage tank, and the tank wall air interface is positioned at the lower part of the storage tank shell;
the air interface of the tank wall is communicated with the air interface at the bottom of the air bag through a hose.
2. The tank of claim 1 wherein the wall air interface is for introducing air into the bladder or for removing air from the bladder.
3. The storage tank of claim 1 wherein the pressure monitoring system is configured to monitor the pressure of the gas in the storage tank.
4. The storage tank of claim 1, wherein the hose is a stainless steel hose or an oil-resistant rubber hose.
5. The storage tank of claim 1, wherein the storage tank is a vault tank.
6. The tank of claim 1, wherein the diameter of the float is 100mm to 400mm smaller than the diameter of the shell.
7. The tank of claim 1 wherein the shell, float, internal bladder divide the tank into three regions; the first area A is positioned below the floating plate, and the storage tank is used for storing oil medium when working; the second area B is positioned in the inner air bag area above the floating disc, and the storage tank is used for storing air when in work; the third region C is located between the reservoir housing and the inner bladder for storing volatile oil gas generated in the reservoir.
8. A storage system effective for reducing pollutant emissions comprising the abatement tank of any one of claims 1 to 7.
9. The storage system of claim 8, further comprising an intake air blower and control module; the air inlet fan is used for introducing air in the atmosphere into the inner air bag, and the outlet of the air inlet fan is respectively communicated with the inlet of the exhaust valve and the air interface of the tank wall through a tee joint; the control module comprises a pressure monitoring system, an exhaust valve and an air inlet fan start-stop control module.
10. The storage system of claim 9, wherein the control module is configured to control operation of the exhaust valve or the intake fan start-stop control module and discharge or supplement of gas in the air bag according to a monitoring result of the pressure monitoring system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011198945.0A CN114435782A (en) | 2020-10-31 | 2020-10-31 | Storage tank and storage system capable of effectively reducing pollutant emission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011198945.0A CN114435782A (en) | 2020-10-31 | 2020-10-31 | Storage tank and storage system capable of effectively reducing pollutant emission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114435782A true CN114435782A (en) | 2022-05-06 |
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ID=81358457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011198945.0A Pending CN114435782A (en) | 2020-10-31 | 2020-10-31 | Storage tank and storage system capable of effectively reducing pollutant emission |
Country Status (1)
| Country | Link |
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| CN (1) | CN114435782A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201309702Y (en) * | 2008-10-17 | 2009-09-16 | 桂林橡胶制品厂有限责任公司 | Single-side coating sealing tape of floating roof tank |
| CN101643137A (en) * | 2009-08-21 | 2010-02-10 | 中石油东北炼化工程有限公司锦州设计院 | Automatic pressure balancing device of normal pressure tank |
| CN204297427U (en) * | 2014-12-17 | 2015-04-29 | 沈科 | For floating roof and the tank arrangement of storage tank |
| CN206520925U (en) * | 2016-06-15 | 2017-09-26 | 北斗启明（北京）节能科技服务有限公司 | A kind of cellular interior floating plate oil and gas loss comprehensive treatment device of light oil tank |
| CN206590357U (en) * | 2017-03-01 | 2017-10-27 | 中国石油化工股份有限公司 | A kind of energy-saving and emission-reduction storage tank |
| CN108069155A (en) * | 2016-11-11 | 2018-05-25 | 中国石油化工股份有限公司抚顺石油化工研究院 | A kind of storage tank discharging gas emission reduction and recovery system |
| CN110002120A (en) * | 2019-03-27 | 2019-07-12 | 江苏德大石化科技有限公司 | A kind of storage tank compensates bellows high resiliency sealing device entirely |
| CN211109057U (en) * | 2019-09-25 | 2020-07-28 | 武汉工程大学 | Sealing device of floating roof tank and rubber film dry-type gas holder |
-
2020
- 2020-10-31 CN CN202011198945.0A patent/CN114435782A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201309702Y (en) * | 2008-10-17 | 2009-09-16 | 桂林橡胶制品厂有限责任公司 | Single-side coating sealing tape of floating roof tank |
| CN101643137A (en) * | 2009-08-21 | 2010-02-10 | 中石油东北炼化工程有限公司锦州设计院 | Automatic pressure balancing device of normal pressure tank |
| CN204297427U (en) * | 2014-12-17 | 2015-04-29 | 沈科 | For floating roof and the tank arrangement of storage tank |
| CN206520925U (en) * | 2016-06-15 | 2017-09-26 | 北斗启明（北京）节能科技服务有限公司 | A kind of cellular interior floating plate oil and gas loss comprehensive treatment device of light oil tank |
| CN108069155A (en) * | 2016-11-11 | 2018-05-25 | 中国石油化工股份有限公司抚顺石油化工研究院 | A kind of storage tank discharging gas emission reduction and recovery system |
| CN206590357U (en) * | 2017-03-01 | 2017-10-27 | 中国石油化工股份有限公司 | A kind of energy-saving and emission-reduction storage tank |
| CN110002120A (en) * | 2019-03-27 | 2019-07-12 | 江苏德大石化科技有限公司 | A kind of storage tank compensates bellows high resiliency sealing device entirely |
| CN211109057U (en) * | 2019-09-25 | 2020-07-28 | 武汉工程大学 | Sealing device of floating roof tank and rubber film dry-type gas holder |
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Effective date of registration: 20240321 Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Applicant after: CHINA PETROLEUM & CHEMICAL Corp. Country or region after: Zhong Guo Applicant after: Sinopec (Dalian) Petrochemical Research Institute Co.,Ltd. Address before: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Applicant before: CHINA PETROLEUM & CHEMICAL Corp. Country or region before: Zhong Guo Applicant before: DALIAN RESEARCH INSTITUTE OF PETROLEUM AND PETROCHEMICALS, SINOPEC Corp. |
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