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Polymer-containing oil sludge treatment device and method based on supercritical water gasification process

A supercritical water gasification and treatment device technology, which is applied in water/sludge/sewage treatment, sludge treatment, chemical instruments and methods, etc., can solve the problem that the cohesive state cannot achieve high-efficiency gasification of oil-containing sludge

Inactive Publication Date: 2020-10-20
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to overcome the deficiencies of the sticky state of the oil-containing sludge and the inability to achieve high-efficiency gasification of the oil-containing sludge, and provide a treatment device and method for the oil-containing sludge based on a supercritical water gasification process. The characteristics of liquefaction in subcritical water, the design is more suitable for process equipment containing oily sludge, so as to achieve the purpose of efficient gasification of oily sludge

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  • Polymer-containing oil sludge treatment device and method based on supercritical water gasification process

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Experimental program
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Effect test

Embodiment 1

[0033] Step 1, the raw material containing poly-oil sludge is fed into the continuous stirring tank 3 through the screw feeding device 1, the feed mass ratio of poly-oil-containing sludge to subcritical water is 1:1, and the raw material and subcritical water 2 are subjected to subcritical Water liquefaction reaction, liquefying the difficult-to-flow raw material into an easy-flowing liquid to obtain a mixture A; the control of the continuous stirring tank 3 is 13Mpa, the temperature is 150°C, and the high-torque magnetic drive stirring speed is 1000rpm;

[0034] Step 2, the mixture A enters the supercritical water gasification device 4, the feed mass ratio of the mixture A to the supercritical water is 1:1, and the mixture A and the supercritical water 5 are subjected to supercritical water vaporization in the supercritical water gasification device 4. Gasification reaction, so as to achieve high-efficiency gasification of oil-containing sludge, and obtain mixture B; the tempe...

Embodiment 2

[0037] Step 1, the raw material containing oily sludge is fed into the continuous stirring tank 3 through the screw feeding device 1, the feed mass ratio of oily sludge containing oily polymer and subcritical water is 1:3, and the raw material is subcritically mixed with subcritical water 2 in it. Water liquefaction reaction, liquefying the difficult-to-flow raw material into an easy-flowing liquid to obtain a mixture A; the control of the continuous stirring tank 3 is 15Mpa, the temperature is 250°C, and the high-torque magnetic drive stirring speed is 1500rpm;

[0038] Step 2, the mixture A enters the supercritical water gasification device 4, the feed mass ratio of the mixture A to the supercritical water is 1:3, and the mixture A and the supercritical water 5 are subjected to supercritical water vaporization in the supercritical water gasification device 4. Gasification reaction, so as to achieve high-efficiency gasification of oil-containing sludge, and obtain mixture B; t...

Embodiment 3

[0041] Step 1, the raw material containing poly-oil sludge is sent into the continuous stirring tank 3 through the screw feeding device 1, the feed mass ratio of poly-oil-containing sludge to subcritical water is 1:5, and the raw material is subcritically mixed with subcritical water 2 in it. Water liquefaction reaction, liquefying the difficult-to-flow raw material into an easy-flowing liquid to obtain a mixture A; the control of the continuous stirring tank 3 is 20Mpa, the temperature is 370°C, and the high-torque magnetic drive stirring speed is 1800rpm;

[0042]Step 2, the mixture A enters the supercritical water gasification device 4, the feed mass ratio of the mixture A to the supercritical water is 1:5, and the mixture A and the supercritical water 5 are subjected to supercritical water vaporization in the supercritical water gasification device 4 and supercritical water 5 Gasification reaction, so as to achieve high-efficiency gasification of oil-containing sludge, and ...

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Abstract

The invention discloses a polymer-containing oil sludge treatment device and method based on a supercritical water gasification process. Directed at the characteristics of the adhesive state of polymer-containing oil sludge, a continuous stirring kettle is arranged before polymer-containing oil sludge slurry enters a supercritical water gasification reactor; the continuous stirring kettle can meetconditions required by liquefaction of the polymer-containing oil sludge, changes the adhesion state of the polymer-containing oil sludge, allows liquid to have good fluidity and breaks the complex cross-linked macromolecular chain of a polymer; and hydrolyzed small molecule group substantially reduces a complete gasification condition of subsequent supercritical water gasification, so high gasification effect is achieved and gasification efficiency is substantially improved. A gas-liquid separator disclosed by the invention can be used for carrying out gas-liquid separation on a product which has been subjected to subsequent treatment and is discharged from a supercritical water gasification reactor, so separation of a gas product and a liquid product is realized, and comprehensive utilization and analysis of the gas product and the liquid product are realized.

Description

technical field [0001] The invention belongs to the field of processing oil sludge containing poly, and in particular relates to a treatment device and method for oil sludge containing poly based on a supercritical water gasification process. Background technique [0002] As oilfield exploitation begins to enter the third stage of oil recovery technology, polymer flooding technology has become an important means of increasing oilfield production. With the huge economic benefits brought by the polymer flooding technology, the problems caused by the increasing amount of polymer-containing oil sludge cannot be ignored more and more. Polymerized oil sludge has been listed as hazardous solid waste, and because of the limited space in offshore oil fields and short operating procedures, polymerized oily sludge has caused serious pollution to the surrounding soil, water, and air, posing a huge threat to human health , cannot be discharged directly. [0003] At present, there are m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C10L3/08
CPCC02F11/00C10L3/08C10L2290/04
Inventor 刘义刚郭烈锦唐晓旭彭湃张华金辉张伟李林虎韩晓冬郭生辉周法元王高云王弘宇徐加陵
Owner CHINA NAT OFFSHORE OIL CORP