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Oil-mud treatment agent and oil-mud treatment method

A treatment method and treatment agent technology, applied in the direction of sludge treatment, water/sludge/sewage treatment, natural water treatment, etc., can solve the problems of limited treatment, complex components, and many colloids, so as to facilitate industrial production, The effect of simple and reasonable process and simple reaction conditions

Active Publication Date: 2018-01-19
BEIJING BOHUITONG S & T DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The centrifuge dehydration method is difficult to dehydrate because the oily sludge is in an emulsified state, and it cannot really achieve the purpose of treating oily sludge
The thermal analysis method is similar to the incineration method. It also has the problems of high energy consumption and waste gas generation. It also has the problems of flammability and explosion, and the equipment is easy to coke and block.
The various agents used in the traditional thermochemical demulsification method have a certain effect on simple oily sludge, but have no obvious demulsification effect on oily sludge with complex components, high viscosity, colloids, and asphaltene.
The microbial method occupies a large area, has a long treatment period, is restricted by the ambient climate temperature, and can only treat oil sludge with an oil content of less than 5%, so the treatment is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] In this embodiment, oily sludge with a water content of 81.6% m / m and an oil content of 8.4% m / m is treated, with a total weight of 200 g.

[0027] The sludge treatment agent in this embodiment includes ammonium formate, polyacrylamide and ammonium persulfate.

[0028] The treatment method of the oily sludge of the present embodiment may further comprise the steps:

[0029] S100: Adjust the pH of the sludge to be treated to 2.0~3.0; in this embodiment, adjusting the pH of the sludge is achieved by adding 98% concentrated sulfuric acid, stirring the oily sludge while adding concentrated sulfuric acid, and waiting for pH adjustment After reaching 2.0 to 3.0, stop adding concentrated sulfuric acid, and then stir for 4~10min;

[0030] S200: Add 2.8g of ammonium formate, 1.1g of polyacrylamide and 2.1g of ammonium persulfate in sequence, and then stir evenly; at this time, the three phases of oil, water and mud are clearly separated;

[0031] S300: Separating the oil sludg...

Embodiment 2

[0034] In this embodiment, oily sludge with a water content of 81.6% m / m and an oil content of 8.4% m / m is treated, with a total weight of 200 g.

[0035] The sludge treatment agent in this embodiment includes ammonium formate, polyacrylamide, ammonium persulfate and alkylphenol polyoxyethylene ether.

[0036] The treatment method of the oily sludge of the present embodiment may further comprise the steps:

[0037] S100: Adjust the pH of the sludge to be treated to 2.0~3.0; in this embodiment, adjusting the pH of the sludge is achieved by adding 98% concentrated sulfuric acid, stirring the oily sludge while adding concentrated sulfuric acid, and waiting for pH adjustment After reaching 2.0 to 3.0, stop adding concentrated sulfuric acid, and then stir for 4~10min;

[0038] S200: Add 2.8g of ammonium formate, 1.1g of polyacrylamide and 2.1g of ammonium persulfate in sequence, and then stir evenly; at this time, the three phases of oil, water and mud are clearly separated;

[0...

Embodiment 3

[0044] In this embodiment, oily sludge with a water content of 81.6% m / m and an oil content of 8.4% m / m is treated, with a total weight of 200 g.

[0045]The sludge treatment agent in this embodiment includes ammonium formate, polyacrylamide, ammonium persulfate and alkylphenol polyoxyethylene ether.

[0046] The treatment method of the oily sludge of the present embodiment may further comprise the steps:

[0047] S001: adjust the water content of the sludge to be treated to 95.4%; the specific operation of this step is to add 200g of oily sludge to 600ml of clear water and then stir evenly;

[0048] S002: heating the sludge obtained in step S001 to 75°C;

[0049] S100: Adjust the pH of the sludge to be treated to 2.0-3.0; in this embodiment, the adjustment of the pH of the sludge is achieved by adding 20 ml of 98% concentrated sulfuric acid, and the oily sludge is stirred while adding the concentrated sulfuric acid. After adjusting the pH to 2.9, stop adding concentrated su...

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Abstract

The invention relates to an oil-mud treatment agent and an oil-mud treatment method. The oil-mud treatment agent contains a primary demulsifier and a secondary demulsifier, wherein the primary demulsifier is organic acid salt, the secondary demulsifier is a mixture of polyacrylamide and persulfate and / or superphosphate, and the ratio of the total parts by weight of polyacrylamide to persulfate and / or superphosphate is (4 to 1)-(1 to 4). The invention further relates to the oil-mud treatment method. The oil-mud treatment method is suitable for all currently known oil mud and has the beneficialeffects that the treatment is thorough, the reaction is rapid, the reaction conditions are simple, the operation is convenient, the cost is low, the effect is stable, and the defects in the prior artare well remedied.

Description

technical field [0001] The invention relates to the technical field of oily sludge treatment, in particular to an oil sludge treatment agent for treating oil sludge and an oil sludge treatment method using the oil sludge treatment agent. Background technique [0002] With the development of oil and gas shale gas exploitation, petroleum processing, coking and other industries, a large amount of oily sludge is produced every year. If such oily sludge is not treated, it will cause great harm to the environment. Our country and other countries in the world have successively enacted related laws and regulations. Treatment of oily sludge is imperative. [0003] The difficulties in treating oily sludge are as follows: 1. The components in oily sludge are complex, and light components, heavy components, colloids, asphaltene, etc. may exist, and the proportions are not fixed; 2. The components in oily sludge Most of the oil exists in emulsified state, which is difficult to separat...

Claims

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Application Information

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IPC IPC(8): C02F11/00C02F103/10C02F103/36
Inventor 李婕姚京娟谭世洲
Owner BEIJING BOHUITONG S & T DEV