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A high-efficiency organic waste gas recovery and treatment method and complete set of equipment

A technology for organic waste gas, recovery and treatment, applied in gas treatment, separation methods, chemical instruments and methods, etc., can solve the problems of substandard exhaust gas, poor safety, and high construction costs, and achieve increased recovery efficiency, high level of automatic control, and safety. strong effect

Active Publication Date: 2020-09-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Overcome the problems of high construction cost, poor safety, and non-standard tail gas of existing organic waste gas recovery and treatment devices

Method used

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  • A high-efficiency organic waste gas recovery and treatment method and complete set of equipment
  • A high-efficiency organic waste gas recovery and treatment method and complete set of equipment
  • A high-efficiency organic waste gas recovery and treatment method and complete set of equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100] The application results of the recovery and treatment process of the organic waste gas discharged from the catalytic gasoline tank on the vaulted top of the oil storage tank area. The main composition of the organic waste gas (volume fraction) is nitrogen, and the concentration of volatile organic compounds (VOCs) is about 150,000 to 300,000 mg / m 3 between. The design capacity of the device is 40m 3 / h, the maximum concentration of rated air intake is 200000mg / m 3 , the pressure on the retentate side of the first-stage membrane is 0.2Mpa, the pressure on the retentate side of the second-stage membrane is 0.38Mpa, the pressure of the compression and condensation process in the device is 0.4MPa, the temperature is 2°C, the vacuum degree of the permeate side is not lower than -0.09Mpa, and the low-temperature catalytic process starts The initial temperature ranges from 260°C to 340°C. The intake flow rate during the operation of the device, the concentration of non-metha...

Embodiment 2

[0104] The effect of the method and the device on the recovery and treatment of the organic waste gas discharged from the breathing valve of the floating roof sewage tank in the intermediate tank area in the refinery. Its organic waste gas composition (volume fraction) is mainly nitrogen accounting for about 80% to 88% of the volume fraction, and volatile organic compounds (VOCs) accounting for between 12% and 20% of the volume fraction. The hydrocarbons in VOCs are mainly light hydrocarbons, including methane, ethane, ethylene, propane, propylene, isobutane, n-butane, n-butene, isobutene, trans-butene, and carbon 5. In addition, the exhaust gas also contains a small amount of hydrogen sulfide and oxygen. The design capacity of the device is 40m 3 / h, rated intake air maximum concentration 300000mg / m 3 Or the volume fraction is 20% (v / v), the pressure on the retentate side of the primary membrane is 0.2Mpa, the pressure on the retentate side of the secondary membrane is 0.38...

Embodiment 3

[0109] For the treatment of the waste gas from the catalyst production workshop, the VOCs concentration of the emission is theoretically estimated first. The VOCs in the waste gas mainly come from the raw materials hexane and toluene used in the production process. Due to the limitation of the process conditions in the production process, some toluene and hexane will be consumed During the production process, it is discharged into the atmosphere along with the equipment operation along with nitrogen. The concentration of hexane and non-methane total hydrocarbons in the system intake fluctuates greatly, most of which are at 20,000 mg / m 3 to 140000mg / m 3 Among them, the hydrocarbons in VOCs mainly include n-hexane and toluene. The design capacity of the device is 50m 3 / h, the maximum concentration of intake air does not exceed 350000mg / m 3 , the pressure on the retentate side of the primary membrane is 0.2Mpa, the pressure on the retentate side of the secondary membrane is 0...

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Abstract

The invention relates to a high-effective organic waste gas recovery processing method and complete equipment. The complete equipment includes: an organic waste gas collection apparatus, a gas storage tank, a buffer tank, a primary membrane unit, an active carbon adsorption unit, a vacuum pump, a gas-liquid separation tank, a compression condensing unit, a secondary membrane unit, a low temperature catalytic oxidizing reactor, and a tubular heat exchanger. Through the two-stage membrane as a core technology, advantages that a membrane process is high in efficient, is continuous, has high recover rate and high safety and is suitable for high-concentration organic waste gas are achieved, thus recovering the recoverable components in the waste gas; in addition, with the low temperature catalytic oxidization technology, an advantage of deep processing thereof is achieved, so that a problem of accumulation of light-hydrocarbon substances is overcome. The processing method and complete equipment not only high-effectively recover valuable organic substances, but also can perform deep processing to the organic waste gas with satisfaction of strict requirements on safety production in petrochemical enterprises. Through the deep processing to the organic waste gas, discharged organic waste gas can reach national emission standards.

Description

technical field [0001] The invention relates to an organic waste gas recovery and treatment method and a complete device, which are mainly used in the recovery and treatment of organic waste gas in the field of petrochemical enterprises. Specifically, it is a recovery and treatment method and a complete set of equipment for organic waste gas in petrochemical enterprises after corresponding optimization, improvement and coupling of membrane organic waste gas recovery technology, compression condensation, adsorption process and low-temperature catalytic oxidation treatment technology. 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. Environmental protection has been listed as a key development direction of the 13th Five-Year Plan. Usually, petrochemical en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/22B01D53/04B01D5/00B01D53/86
CPCB01D5/00B01D53/225B01D53/229B01D53/86B01D2253/102B01D2259/40083
Inventor 魏昕栾金义杨丽张建华万国辉
Owner CHINA PETROLEUM & CHEM CORP
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