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Pretreatment agent and pretreatment method for oil-gas-workplace-station organic waste gas

A technology of organic waste gas and pretreatment agent, which is applied in the direction of gas treatment, separation methods, chemical instruments and methods, etc. It can solve the problems of increasing the cost of catalytic oxidation treatment, reducing the active components of catalysts, and expensive precious metals, etc., so as to improve the processability and processing efficiency, equipment maintenance cycle extension, and the effect of replacement cycle extension

Active Publication Date: 2018-10-12
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In oil field development and petrochemical operation stations, the removal of organic waste gas containing N, S, P and water vapor mainly uses technologies such as catalytic combustion, plasma, and biodegradation, but these technologies require the use of catalytic means and processes In order to be effective, and the process conditions are strict, the exhaust gas is not allowed to contain dust particles and mist droplets that affect the life of the catalyst and the treatment efficiency, nor is there any substance that can poison the catalyst. High temperature and high altitude are required, so the selected catalyst must have high activity. , high thermal stability and high hydrothermal stability, and certain anti-poisoning ability; commonly used catalysts are noble metal catalysts such as Pd, Pt, Rh, Au, but these noble metals are expensive and easy to sinter, which increases the cost of catalytic oxidation treatment
In addition, the water vapor in the organic waste gas will reduce the active components of the catalyst, reduce the adsorption sites of volatile organic compounds on the surface of the catalyst, reduce the reaction activity, and reduce the treatment efficiency

Method used

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  • Pretreatment agent and pretreatment method for oil-gas-workplace-station organic waste gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The pretreatment of organic waste gas in oil and gas operation stations is carried out in accordance with the following steps:

[0024] (1) Add diethylene glycol, diglycolamine, and glycerin that are miscible in any ratio to the container to prepare a base liquid. The base liquid has a buffer function and can keep the pH value stable between 8 and 9. The ratio of the three: Diethylene glycol amine 50% to 55%, diethylene glycol 20% to 25%; glycerol (glycerol) 20% to 25%.

[0025] (2) Add sodium citrate in the base liquid, the dosage is 0.5% to 1.0%, stir slowly for 5 minutes and let it stand still, cover and seal the container, open the positive pressure breathing valve of the sealing cover, and set aside.

[0026] (3) Connect the dissolved air pump and the air tank with the container containing the pretreatment agent, turn on the dissolved air pump, blow air into the dissolved air pump and pressurize it, so that the dissolved air ratio is within the range of 2.0 to 3.0:...

Embodiment 2

[0031] Since 2012, a treatment test has been carried out by the method described in Example 1, and a total of 4 tests have been carried out for the organic waste gas discharged unorganized from Changqing Oilfield operation stations (transfer stations, booster stations, gathering stations, and combined stations). , respectively tested the experimental evaluation of catalytic combustion, low-temperature plasma decomposition, biological treatment and other treatment technologies, designed a comparative experiment, and evaluated the experimental results as follows:

[0032]

[0033] Compared with the catalytic combustion process without pretreatment, in the catalytic combustion process with pretreatment, the catalyst replacement cycle is extended by more than 70%, the equipment maintenance cycle is more than doubled, and the comprehensive treatment cost is reduced by more than 20%;

[0034] Compared with the plasma decomposition technology without pretreatment, in the plasma dec...

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Abstract

The invention provides a pretreatment agent and pretreatment method for oil-gas-workplace-station organic waste gas. The pretreatment agent is prepared from, by weight, 50%-55% of diglycolamine, 20%-25% of diglycol, 20%-25% of glycerol and 0.5%-1.0% of sodium citrate. The pretreatment method includes the steps that the pretreatment agent is added into a pretreatment container, and a positive-pressure breathing valve of the pretreatment container is opened; an air dissolving pump of the pretreatment container is opened, air is blown into the pretreatment agent, and the pretreatment agent is inthe fluidized state; to-be-pretreated organic waste gas is introduced into the pretreatment agent, and is in contact with the pretreatment agent, and organic waste gas after treatment flows into a following treatment device from the positive-pressure breathing valve. According to the pretreatment agent and pretreatment method, the treatability and the treatment efficiency of organic waste gas arewholly improved, and the treatment cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of petrochemical industry, and in particular relates to an organic waste gas pretreatment agent and a pretreatment method of an oil and gas operation station. Background technique [0002] Petroleum is a mixture of various liquid hydrocarbons such as alkanes, cycloalkanes, aromatic hydrocarbons and olefins. The hydrocarbons formed by the combination of carbon and hydrogen constitute the main component of petroleum, accounting for about 95% to 99%, and are the main body of development and utilization; others Organic compounds containing sulfur, oxygen, nitrogen, phosphorus, etc. exist in the process of petroleum development or refining as toxic, harmful, affecting the quality of refined oil, endangering process safety, and affecting environmental quality, etc., and need to be removed. [0003] In oil field development and petrochemical operation stations, the removal of organic waste gas containing N, S, P an...

Claims

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Application Information

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IPC IPC(8): B01D53/72
CPCB01D53/72B01D2251/70B01D2251/80B01D2258/02
Inventor 张海玲薛建强周立辉穆谦益周娟邱奇冀忠伦任鹏刘沛华朱妍任小荣蒋继辉李照林
Owner PETROCHINA CO LTD
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