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Process and complete-set apparatus for oil gas recovery and treatment

A technology of recycling and complete equipment, applied in the direction of dispersed particle separation, chemical instruments and methods, separation methods, etc., can solve the problems of poor safety, substandard exhaust gas, high construction cost, etc., and achieve high self-control level, improved explosion-proof level, low energy consumption effect

Inactive Publication Date: 2017-10-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While recovering valuable pollutants in oil and gas, it meets the oil and gas emission indicators and the safety production requirements of petrochemical enterprises, and overcomes the problems of high construction cost, poor safety and substandard tail gas of existing oil and gas recovery and treatment devices

Method used

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  • Process and complete-set apparatus for oil gas recovery and treatment
  • Process and complete-set apparatus for oil gas recovery and treatment
  • Process and complete-set apparatus for oil gas recovery and treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] The industrial application results of the recovery and treatment of oil and gas discharged from the gas tank on the vaulted roof of the oil storage tank area show that the oil and gas composition (volume fraction) is 78% nitrogen and 22% volatile organic compounds (VOCs). The hydrocarbons in VOCs mainly include alkanes, aromatics and a small amount of olefins and halogenated hydrocarbons. The design capacity of the device is 40~150m 3 / h, the maximum concentration of intake air does not exceed 250000mg / m 3 , The compression and condensation process pressure in the device is 0.2MPa, the temperature is 5°C, the inlet pressure of the membrane process is 0.18Mpa, the vacuum degree of the permeation side is 0.09Mpa, and the temperature of the low-temperature catalytic process is 260°C to 340°C. The oil and gas concentration at the inlet and outlet of the device, the intake flow rate, the membrane process and the removal rate of the whole process device are shown in Table 1:...

Embodiment 2

[0087] The application results of the device processing oil gas recovery and treatment of the floating roof tank breathing valve in the intermediate tank area of ​​the refinery. The compression and condensation process pressure in the device is 0.2MPa and the temperature is 5°C, the inlet pressure of the membrane process is 0.18Mpa, the vacuum degree of the permeation side is 0.09Mpa, and the temperature of the low-temperature catalytic process is 260°C to 340°C. The oil and gas concentration at the inlet and outlet of the device, the inlet flow rate, the membrane process and the removal rate of the whole process device are shown in Table 2:

[0088] Table 2 Treatment effect of membrane modules and devices on VOCs

[0089]

Embodiment 3

[0091] Four 2000m light dirty oil tank farms in catalytic workshop of refinery 3Application results of oil and gas recovery treatment of light dirty oil intermediate tank. Its oil and gas composition is 8.4% to 33.2% of volatile organic compounds (VOCs). The hydrocarbons in VOCs mainly include methane, ethane, propane, butane, etc. totaling 1.2% to 2.7%, and pentane and organic pollutants above carbon six are 7.2% to 30.5%. The design capacity of the device is 80~200m 3 / h, the maximum concentration of intake air should not exceed 350000mg / m 3 , The compression and condensation process pressure in the device is 0.2MPa, the temperature is 5°C, the inlet pressure of the membrane process is 0.18Mpa, the vacuum degree of the permeation side is 0.09Mpa, and the temperature of the low-temperature catalytic process is 260°C to 340°C. See Table 1 for the oil and gas concentration at the inlet and outlet of the device, the inlet flow rate, the membrane process and the removal rate o...

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Abstract

The invention relates to a process and complete-set apparatus for oil gas recovery and treatment. The complete-set apparatus for oil gas recovery and treatment comprises an oil gas collection device, a buffer gas-mixing tank, a vacuum pump, membrane assembly, a compression and condensation unit, a gas-liquid separation tank, a tube array heat exchanger, and a catalytic oxidation reactor. The process comprises that oil gases successively enter the buffer gas-mixing tank, a compressor and the compression and condensation unit; the compressed and condensed oil gases enter the gas-liquid separation tank for gas-liquid separation, and a gas phase is subjected to membrane separation in the membrane assembly; gases located at the permeate side of the membrane assembly pass through the vacuum pump, and then is compressed and condensed again; the concentration of the oil gases in gases located at the retentate side of the membrane assembly is reduced, and discharging is directly performed after the oil gas concentration reaches a standard; and if the concentration of the oil gases in the gases located at the retentate side still exceeds the standard, the gases enter the tube array heat exchanger to exchange heat with oil gases which are subjected to catalytic oxidation in the catalytic oxidation reactor, and the gases subjected to heat exchange enter the catalytic oxidation reactor, catalytic oxidation is performed under the action of a catalyst for removing organic materials in the gases, and at last discharging is performed after the oil gas concentration reaches the standard. The process and complete-set apparatus for oil gas recovery and treatment realize the high-efficiency recovery and treatment of the oil gases, and have certain industrial application prospect.

Description

technical field [0001] The invention relates to an oil gas recovery treatment process and a complete set of equipment, which are mainly used in the treatment of volatilized oil gas in the process of oil storage, transportation and loading and unloading. Specifically, it is a kind of oil and gas volatilized in the process of oil storage, transportation and loading and unloading in petrochemical enterprises, which is formed by optimizing and improving membrane oil and gas recovery technology, compression condensation technology and low temperature catalytic oxidation treatment technology, and coupling them together. Processing technology and complete set of equipment. Background technique [0002] With the improvement of the country's economic level and the transformation of production concepts, the environmental protection indicators of petrochemical enterprises such as refining and chemical industries have been continuously improved, and environmental protection has been lis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/22
CPCB01D53/229B01D53/86
Inventor 魏昕栾金义杨丽杨永强万国辉卢姝
Owner CHINA PETROLEUM & CHEM CORP
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