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Oily sludge treatment agent, use method and oily sludge cleaning method

A technology for sludge treatment and oily sludge, which is applied in sludge treatment, immiscible solvent sludge treatment, water/sludge/sewage treatment, etc. Strong sand adhesion and other problems can be achieved to improve the cleaning effect and the effect of crude oil stripping is remarkable

Inactive Publication Date: 2020-06-26
中洁环淼(江苏)环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the technical problems of large differences in properties of oily sludge in major oil fields, long storage time, high viscosity, and strong adhesion to sediment, the present invention provides an oily sludge treatment agent that can thoroughly, quickly and effectively cleaning oily sludge

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] According to the quality of treated oily sludge, prepare the oily sludge treatment agent of this embodiment in a glass bottle, according to the quality 100g of the oily sludge to be treated, prepare the oily sludge treatment agent: 2g of domestic viscosity reducer DNTXIB, 2g of petroleum sulphur Salt, 2g of sodium dodecylbenzenesulfonate, 2g of sodium silicate, 3g of hypochlorous acid. Mix 100g of the oily tank bottom sludge sample stored for more than 20 days with water at a ratio of 1:4, raise the temperature to 65°C, pour in the aforementioned oily sludge treatment agent, stir evenly, place it in an ultrasonic device for ultrasonic treatment for 0.5h, and let it stand for 2h , The solid-liquid layer separates the oil and sand, the upper layer recovers crude oil, and the lower layer of sludge and sand has an oil content of 0.85% after centrifugation.

Embodiment 2

[0025] Prepare the oily sludge treatment agent of this embodiment in a glass bottle according to the quality of the oily sludge to be treated, and prepare the oily sludge treatment agent according to the quality of the oily sludge to be treated: 2g of black viscosity reducer SY-1, 2g of Petroleum sulfonate, 4g sodium dodecylbenzenesulfonate, 4g sodium silicate, 3g NaClO.

[0026] Mix 100g of ground mud sample with water 1:4, heat up to 70°C, pour in the aforementioned oily sludge treatment agent, stir evenly, put it in ultrasonic equipment for ultrasonic treatment for 1 hour, let it stand for 4 hours, and separate the solid and liquid to make the oil sand Separation, crude oil is recovered from the upper layer, and the oil content of the lower layer of sludge and sand is 1.4% after centrifugation.

Embodiment 3

[0028] Prepare the oily sludge treatment agent of this embodiment in a glass bottle according to the quality of the treated oily sludge. According to the quality of the oily sludge to be treated 200g, prepare the oily sludge treatment agent: 6g of black viscosity reducer SY-1, 6g of Petroleum sulfonate, 4g of sodium dodecylbenzenesulfonate, 4g of sodium silicate, 4g of chloric acid. Mix 200g of the oily tank bottom sludge sample stored for more than 60 days with water at a ratio of 1:4, raise the temperature to 65°C, pour in the aforementioned oily sludge treatment agent, stir evenly, place it in an ultrasonic device for ultrasonic treatment for 1.5 hours, and let it stand for 5 hours , The solid-liquid layer separates the oil and sand, the upper layer recovers crude oil, and the oil content of the lower layer of sludge and sand is 1.7% after centrifugation.

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Abstract

The invention relates to an oily sludge treatment agent, which comprises the following components based on the mass of oily sludge: 1-4wt% of a viscosity reducer, 1-6wt% of mahogany petroleum sulfonate, 1-6wt% of sodium dodecyl benzene sulfonate, 2-6wt% of sodium silicate and 1-3wt% of an oxidant. Specifically, the viscosity reducer can effectively reduce the viscosity of oily sludge caused by long-time storage, and the stripping effect of the crude oil after viscosity reduction is remarkable. The oxidant effectively decomposes microbial metabolites wrapped on the surfaces of sludge particlesunder the action of heating and ultrasonic reaction, so that the cleaning effect of the oily sludge is improved. An emulsifying agent, a surfactant, a dispersing agent and other surfactants can effectively emulsify the crude oil to achieve the effects of solid-liquid layering, crude oil recovery and sediment solidification. The oily sludge treatment agent provided by the invention has a remarkabletreatment effect on oil field oily sludge sediment like landing mud and tank bottom mud, and the oil content of the treated sludge sediment is smaller than 2%, thus meeting the national standard.

Description

technical field [0001] The invention relates to an oily sludge treatment agent, a method for using the same and a cleaning method for oily sludge, and belongs to the technical field of oil field chemistry. Background technique [0002] Oilfield oily sludge treatment agent is generally a mixed solution made of chemical agents. When used, solid / liquid raw materials are added and mixed evenly to make oilfield oily sludge treatment agent, and pumped into the oily sludge reaction tank that needs to be treated to treat oily sludge. Mud emulsification cleaning, so as to achieve the purpose of oil removal. [0003] CN105198180A discloses an improved water washing treatment agent and a method for applying it to meet the standard treatment of oily sludge in oil fields. The water washing treatment agent includes 2-8wt% sodium hydroxide, 5-10wt% sodium dodecylbenzenesulfonate, 1- 5 wt% sodium carbonate, 1 wt% polysorbate and water. The water washing treatment agent can work together w...

Claims

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Application Information

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IPC IPC(8): C02F11/00C02F11/06C02F101/30
CPCC02F11/00C02F11/002C02F11/06C02F2101/30
Inventor 陈彩霞李伟张庆华
Owner 中洁环淼(江苏)环境科技有限公司
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