Environment-friendly cleaning agent for treating oily sludge and preparation method thereof

A sludge treatment and cleaning agent technology, which is applied in dewatering/drying/concentrating sludge treatment, mining wastewater treatment, etc., can solve the problems of affecting the environmental ecosystem, poor biodegradability, inconvenient crude oil recovery, etc., and achieve good biodegradability. , The effect of low production cost and easy industrial application

Inactive Publication Date: 2017-01-04
XIAN HUANUO ENVIRONMENTAL PROTECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The five methods can achieve better treatment effects on oily sludge to a certain extent, but each method has its own advantages, disadvantages and scope of application
For example, although surfactant elution and oil removal show a high oil removal rate, it requires a high concentration and processing temperature, which will make oil and water miscible and in an emulsified state, which is not convenient for the recovery of crude oil; and biodegradation Poor, with a certain degree of toxicity, seriously affecting the environmental ecosystem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Put 5g of alkyl alcohol ether carboxylate, 10g of sodium dodecylbenzenesulfonate, 1g of potassium chloride, 2g of potassium lauryl ether phosphate, 1.0g of potassium hydroxide, and 81g of water in a reaction kettle at a temperature of 40°C Mix for 30 minutes to obtain a sludge cleaner.

Embodiment 2

[0018] Put 10g of alkyl alcohol ether carboxylate, 10g of sodium dodecylbenzenesulfonate, 1g of potassium chloride, 5g of potassium lauryl ether phosphate, 1.0g of potassium hydroxide, and 73g of water in a reaction kettle at a temperature of 60°C Mix for 40 minutes to obtain a sludge cleaner.

Embodiment 3

[0020] The properties of the tank bottom sludge in a certain sludge factory are as follows: oil content 29.72%, water content 50.35%, solid matter content 19.93% (percentage is based on weight).

[0021] The sludge at the bottom of the tank is pumped into the mixing tank, so that the solid-liquid ratio of the sludge and water in the tank is 1:5, and the sludge and water are mixed evenly after vigorous stirring for 10 minutes. Add the sludge cleaning agent obtained in Example 3 into the mixing tank according to 2% of the sludge weight, maintain the reaction temperature at 60-80° C., and stir for 45 minutes. The reacted product is separated from oil, water and mud in the oil sludge separation device, the oil separated in the upper part is recovered, and the mixture of mud and water in the lower part is separated by sedimentation. The final oil recovery was 95.9%.

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PUM

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Abstract

The invention relates to the technical field of oilfield chemical industry and in particular discloses an environment-friendly cleaning agent for treating oily sludge and a preparation method thereof. The environment-friendly cleaning agent is prepared from the following components in percentage by mass: 5 weight percent to 20 weight percent of an etherified carboxylate surfactant, 5 weight percent to 15 weight percent of sodium dodecyl benzene sulfonate, 1 weight percent to 5 weight percent of potassium polyoxyethylene laurylether phosphate, 1 weight percent to 5 weight percent of inorganic salt and 45 weight percent to 88 weight percent of water. The preparation method of the environment-friendly cleaning agent comprises the following step: uniformly mixing the etherified carboxylate surfactant, the sodium dodecylbenzene sulfonate, the potassium polyoxyethylene laurylether phosphate, the inorganic salt and the water to obtain an oily sludge cleaning agent. The environment-friendly cleaning agent provided by the invention has the advantages that the oily sludge cleaning agent is good in cleaning effect, high in oil recycling rate, low in production cost and green and environment-friendly; the preparation method is simple and convenient and has a wide application range; the cleaning agent for treating the oily sludge, prepared by the invention, can be applied to treatment of various types of oily sludge generated in oil exploitation, gathering and transportation and oil product refining and machining processes and the like.

Description

technical field [0001] The invention relates to the technical field of oil field chemical industry, and specifically discloses an environment-friendly cleaning agent for treating oily sludge and a preparation method thereof. Background technique [0002] A large amount of oily black solid and semi-solid waste, namely oily sludge, referred to as oily sludge, will be produced in the process of oil extraction, gathering, refining and oily sewage treatment. Its main components are oil, mud and water. The size of solid particles in oil sludge can range from less than microns to several inches, most of which are between 1 and 100 microns. The composition of oil depends on the type of crude oil, refinery structure and operating conditions. The composition of sludge may change over time. Preliminary investigations show that my country's annual output of oily sludge is about 800,000 tons. Because oily sludge contains water, sediment, sulfide, benzene series, phenols, hydrocarbons, et...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/14C02F103/10
CPCC02F11/14C02F2103/10
Inventor 张峰
Owner XIAN HUANUO ENVIRONMENTAL PROTECTION CO LTD
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