A systematic treatment method for oilfield oil sludge

A technology of landing oily sludge and treatment methods, which is applied in the direction of combustion methods, combustion types, incinerators, etc., and can solve problems such as high energy consumption, secondary pollution, and poor results

Active Publication Date: 2018-01-05
大庆三宝环保科技有限公司
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Problems solved by technology

However, direct incineration not only consumes a lot of energy, but also produces flue gas that will cause secondary pollution to the environment, so a systematic sludge incineration treatment process is necessary.
However, in the existing sludge incineration treatment methods, there is no systematic treatment method directly for oily sludge in oil fields, so the effect is not good when dealing with oily sludge in oil fields

Method used

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  • A systematic treatment method for oilfield oil sludge
  • A systematic treatment method for oilfield oil sludge
  • A systematic treatment method for oilfield oil sludge

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with accompanying drawing:

[0019] Depend on Figure 1 to Figure 4 As shown, the systematic treatment method of this kind of oilfield oil sludge consists of the following steps:

[0020] In the first step, the sludge is sieved through the drum screen, and the material with a particle size larger than 300mm is directly sent to the rotary kiln for incineration, and the rest of the sludge is sent to the geothermal drying table for drying at 70-80°C After treatment, the oil is recovered through the oil collection system, and the moisture content of the sludge after drying is controlled below 40%;

[0021] In the second step, the sludge dried in the first step is collected and then enters the rotary kiln through a screw conveying system with a weighing system according to the weight ratio of gas and fuel. Natural gas is used as auxiliary fuel, and the incineration temperature is controlled at 900 ° C to m...

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Abstract

The invention discloses a systematic treatment method of oilfield oil sludge. The main purpose of the method is to provide a method for completely harmless disposal of oily sludge generated in oilfields, so as to solve the problems of excessive oil content and high operating costs in the discharged sludge. It is characterized in that: the sludge is filtered first, and the filtered bulk materials are sent to the rotary kiln for incineration, and the rest are dried on the drying table, and oil and water are collected at the same time, and the dried sludge is sent to the rotary kiln for incineration to make it inorganic. The gas generated by incineration enters the second combustion chamber for further incineration, the heat generated by incineration heats the water in the boiler, the hot water flows through the pipeline to the drying table to heat the sludge, the cooled water flows back into the boiler, and the generated flue gas Use the SCR / SNCR process to treat the nitrate contained in it. The boiler flue gas enters the absorption tower to absorb the generated sulfur. The flue gas continues to enter the wet electrostatic precipitator to complete the dust treatment and then discharge.

Description

technical field [0001] The invention relates to a method applied in the field of oilfield sludge drying and incineration treatment. Background technique [0002] Oily sludge is one of the main pollutants produced in drilling, fracturing, test production, operation, crude oil treatment, oily sewage treatment, crude oil storage and transportation in the process of oilfield development and production. Oily sludge cannot be treated in time. It will have varying degrees of impact on the production area and the surrounding environment: the oil and gas in the oily sludge volatilize, causing the total hydrocarbon concentration in the air quality in the production area to exceed the standard; the scattered and piled oily sludge pollutes surface water and even groundwater, causing COD, BOD and petroleum are seriously exceeded; oily sludge contains a large amount of crude oil, resulting in excessive petroleum in the soil, soil compaction, destruction of vegetation in the area, degradat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23G7/00
CPCF23G7/00F23G2201/10F23G2203/20F23G2204/103F23G2209/12
Inventor 张雷张博赵奇韩刚
Owner 大庆三宝环保科技有限公司
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