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A kind of oily sludge dewatering agent and its preparation method and dehydration method of oily sludge

A technology of dehydrating agent and oil sludge, which is applied in water/sludge/sewage treatment, sludge treatment, chemical instruments and methods, etc. It can solve the problems of soil and water pollution, increase the burden of prevention and control, and high moisture content, and achieve good Effects of dehydration ability and deoiling ability, good variety of properties, and good application prospects

Active Publication Date: 2021-01-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These oily sludges contain a large amount of alkanes, aromatic hydrocarbons, asphaltene, non-hydrocarbon compounds and other pollutants, which have caused serious impact on the environment.
In addition, these oily sludges generally have a high water content, and complex operations such as dehydration and concentration are required during the treatment process, which also increases the burden of prevention and control.
[0003] Due to the cost, a lot of oily sludge is piled in the open air without treatment, and often flows away with rainwater, resulting in more serious secondary pollution, polluting soil, water, etc.

Method used

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  • A kind of oily sludge dewatering agent and its preparation method and dehydration method of oily sludge

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0059] The preparation of preparation example 1 dehydrating agent

[0060] S1. Weigh 30 parts by weight of methacrylamide, 5 parts by weight of acryloyloxyethyltrimethylammonium chloride, 4 parts by weight of formaldehyde, 2 parts by weight of ethylenediamine, 0.6 parts by weight of ammonium persulfate, 1.8 parts by weight of Sodium bisulfite, 1.5 parts by weight of sodium edetate, 4 parts by weight of polyoxyethylene lauryl ether (20), 0.4 parts by weight of azobisisobutyronitrile, 4.5 parts by weight of acrylic acid and 50 parts by weight of deionized water;

[0061] S2. At room temperature, add methacrylamide, acryloyloxyethyltrimethylammonium chloride, ammonium persulfate, azobisisobutyronitrile, formaldehyde, ethylenediamine and sodium bisulfite to deionized water, and then The temperature was raised to 50°C under stirring, and the reaction was fully stirred for 50 minutes to obtain a reaction liquid;

[0062] S3. Add sodium ethylenediamine tetraacetate, polyoxyethylene ...

preparation example 2

[0063] The preparation of preparation example 2 dehydrating agent

[0064] S1. Weigh 40 parts by weight of methacrylamide, 2 parts by weight of acryloyloxyethyltrimethylammonium chloride, 6 parts by weight of formaldehyde, 1 part by weight of ethylenediamine, 1.2 parts by weight of ammonium persulfate, 1.2 parts by weight of Sodium bisulfite, 2.5 parts by weight of sodium edetate, 2 parts by weight of polyoxyethylene lauryl (20) ether, 0.8 parts by weight of azobisisobutyronitrile, 3.5 parts by weight of acrylic acid and 60 parts by weight of deionized water;

[0065] S2. At room temperature, add methacrylamide, acryloyloxyethyltrimethylammonium chloride, ammonium persulfate, azobisisobutyronitrile, formaldehyde, ethylenediamine and sodium bisulfite to deionized water, and then The temperature was raised to 60°C under stirring, and the reaction was fully stirred for 30 minutes to obtain a reaction liquid;

[0066] S3. Add sodium ethylenediamine tetraacetate, polyoxyethylene l...

preparation example 3

[0067] Preparation Example 3: Preparation of Dehydrating Agent

[0068] S1. Weigh 35 parts by weight of methacrylamide, 3.5 parts by weight of acryloyloxyethyltrimethylammonium chloride, 5 parts by weight of formaldehyde, 1.5 parts by weight of ethylenediamine, 0.9 parts by weight of ammonium persulfate, 1.5 parts by weight of Sodium bisulfite, 2 parts by weight of sodium edetate, 3 parts by weight of polyoxyethylene lauryl alcohol (20) ether, 0.6 parts by weight of azobisisobutyronitrile, 4 parts by weight of acrylic acid and 55 parts by weight of deionized water;

[0069] S2. At room temperature, add methacrylamide, acryloyloxyethyltrimethylammonium chloride, ammonium persulfate, azobisisobutyronitrile, formaldehyde, ethylenediamine and sodium bisulfite to deionized water, and then The temperature was raised to 55°C under stirring, and the reaction was fully stirred for 40 minutes to obtain a reaction liquid;

[0070] S3. Add sodium ethylenediamine tetraacetate, polyoxyethy...

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Abstract

The invention provides an oily sludge dewatering agent and its preparation method and a dehydration method of oily sludge. The dehydrating agent includes methacrylamide, acryloyloxyethyltrimethylammonium chloride, formaldehyde, ethylenediamine, peroxide Ammonium sulfate, sodium bisulfite, sodium edetate, polyoxyethylene laureth (20), azobisisobutyronitrile, acrylic acid, and deionized water. The dehydrating agent has various good performances through the selection and synergy of specific components and a specific preparation method, can be used for dehydration treatment of oily sludge, and has good application value and promotion potential.

Description

technical field [0001] The invention relates to a dehydrating agent and a dehydrating method, more particularly to an oily sludge dehydrating agent and a preparation method thereof and a dehydrating method of oily sludge, belonging to the fields of environmental protection and pollution prevention and treatment. Background technique [0002] At present, with decades of oil extraction and crude oil processing in our country, oily sludge is inevitably produced in the process of oil exploration, extraction, processing, transportation, and use. These oily sludges contain a large amount of alkanes, aromatic hydrocarbons, asphaltenes, non-hydrocarbon compounds and other pollutants, which have a serious impact on the environment. In addition, these oily sludges generally have a high water content, and complex operations such as dehydration and concentration are required during the treatment process, which also increases the burden of prevention and control. [0003] Due to the cos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/148
CPCC02F11/14
Inventor 韩卓袁新赵金刚周国明朱本涛席琦郭爱洪
Owner CHINA PETROLEUM & CHEM CORP
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