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Oil mud harmless treatment and resource reclamation method

A harmless treatment and resource recovery technology, applied in chemical instruments and methods, water/sludge/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problem of low separation efficiency of chemical separation methods

Inactive Publication Date: 2008-05-28
江汉油田科瑞德油气工程(武汉)有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The solidification method and the reinjection method cannot seal the petroleum substances and chlorides in the oily sediment and oil sand well, and the separation efficiency of the chemical separation method is not high (the sediment contains a lot of oil)
The treatment of oil sand adopts steam injection method and chemical separation method, therefore, none of the above methods can solve the problem well

Method used

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  • Oil mud harmless treatment and resource reclamation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1～10

[0134] 2.1 Purpose of the experiment: This test process completes the compound flocculation project of sediment, and verifies various design parameters during the test process.

[0135] 2.2 Scale: process 2 tons of oily sediment or oil sand per hour. The experiment reached the industrial level.

[0136] 2.3 Sampling: Take oily sediment or oil sand samples at the joint station.

[0137] 2.4 Equipment used: 2 composite flocculation tanks of 0.5 tons, and the vacuum dehydration equipment can process 2 tons of sediment per hour. The vacuum dehydration equipment is equipped with a washing device, and its supporting equipment is an air compressor and a vacuum pump. , a composite filter.

[0138] 2.5 Experimental process

[0139] 2.5.1 Preparation of various additives:

[0140] Prepare 200Kg of sodium polyacrylate solution at a ratio of 0.1%, and add 10% to oily sediment or oil sand; prepare 200Kg of deacylated chitin at a ratio of 5%, and add 10% to oily sediment or oil sand %;...

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Abstract

The invention discloses a method of hazard-free treatment and resource recovery of oil silt, and adopts a physical and chemical combinative method to carry out comprehensive treatment of the oil silt. Composite effective oil dispersant is first adopted to conduct high-efficiency separation of oil, mud and sand with the crude oil extraction rate of the oil silt or the oil sand being above 99.99 percent; vacuum absorption is then employed to separate water bodies from the silt and the removal rate of harmful substances in the oil silt or the oil sand reaches above 99.99 percent; the harmful substances in water are next removed by the technique combining compound filtering and precision filtering. The oil contained in the silt after treatment is less than 600 mg / kg, which meets the corresponding national emission standard; the silt after the hazard-free treatment can be applied to roadbed construction or well field paving; the quality of water after treatment can achieve the national wastewater discharge standard of grade I and be reused in the treatment; the oil silt or the oil sand after being treated by the treatment method can achieve the hazard-free treatment and a great deal of crude oil can be recovered.

Description

technical field [0001] The invention relates to the treatment of oil production waste, in particular, the invention is a method for harmless treatment of oil and sand and resource recovery. Background technique [0002] At present, in the petroleum industry, a large amount of oily sediment is produced in the process of crude oil dehydration and well washing, and the oily sediment contains a large amount of crude oil; in addition, in the process of oil sand treatment, due to the low separation efficiency of the separation technology (the highest The separation efficiency is 80-90%, and the general separation efficiency is 60-70%). Therefore, the treated oil sand contains a large amount of crude oil. Oily sediments or oil sands cause serious pollution to the environment because they contain crude oil. The State Environmental Protection Administration has long listed oily sediment as hazardous waste. Therefore, it is imperative to carry out resource recovery and harmless trea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02C02F1/52C02F1/28
Inventor 黄大军
Owner 江汉油田科瑞德油气工程(武汉)有限公司
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