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Technological method for treatment of oil field oil sludge

A process method and sludge sludge technology, applied in sludge treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of small treatment volume, complicated treatment process, secondary pollution, etc., and achieve heat prevention The effect of loss, reasonable process design and strong processing capacity

Active Publication Date: 2016-12-21
大庆世纪新风环保科技有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing technology has the following disadvantages: due to the addition of chemicals in the process, on the one hand, resources are wasted, and on the other hand, secondary pollution can be generated. In addition, this process is difficult to meet the national standard for oil content in sludge. If the sludge contains oil It is difficult to carry out industrial production if the amount is lower than the national standard, and the processing amount is small, generally 200-300KG / H
The existing treatment process is complex, the number of modules is large, the failure rate is high, and the floor space is large. Oil, water, and separation are separated by settling and separating tanks; if more than 2 tons of sediment are produced per hour, the oil content is 3% to 6%, and the oil content in the water is greater than 500PPM. Oil contains more than 5% water

Method used

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  • Technological method for treatment of oil field oil sludge
  • Technological method for treatment of oil field oil sludge
  • Technological method for treatment of oil field oil sludge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] refer to figure 2 and image 3 , a process method for treating oilfield sludge, the process method is:

[0033] Step 1. Solid oily sludge screening

[0034] The solid oily sludge is broken up by a sludge sorting device, and the broken solid sludge is screened by a vibrating screening machine, and the particles larger than 2 cm in the sludge are transported to the sludge sorting device for re-dispersion. Sludge blocks smaller than 2 cm are transported to the carburetor tank for treatment, and stones, fibers, weeds, construction waste and other debris are sorted into the collection box during the vibration screening process;

[0035] Step 2. Dry steaming of solid oily sludge to oil

[0036] The sludge particles no larger than 1 cm screened out by the vibrating screen machine are transported to the ring cavity sieve column 2 of the carburetor through the screw feeder. After the ring cavity sieve column 2 is filled with sludge particles, the ring cavity sieve column 2 ...

Embodiment 2

[0054] refer to figure 1 , a process method for treating oilfield sludge, the process method is

[0055] Step 1. Automatic feeding

[0056] Due to the wide sources of oily sludge in various places, it is mainly composed of crude oil, water and solid particles, which also contains some bulky materials and solid waste. For example, the geographical location of Liaohe Oilfield has a large temperature difference in four seasons. The high temperature in summer causes the crude oil in the oily sludge to precipitate, forming an oil slick with strong fluidity. The solid particles in the mud are deposited at the bottom of the mud storage tank, between the solid and the slick There is an aquifer; when the temperature drops in autumn, the upper layer of slick oil condenses to form an oil cap. As the temperature drops, the fluidity of the sludge weakens and freezes in winter. Therefore, the feed of liquid sludge and solid semi-solid sludge should be considered in the feed of oily sludge...

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Abstract

Belonging to the technical field of oil sludge treatment, the invention specifically relates to a technological method for treatment of oil field oil sludge. The technological method consists of: solid oily sludge screening, solid oily sludge dry steam oil melting, solid oily sludge high-pressure water crushing, liquid oily sludge pretreatment, first level cleaning, second level cleaning, third level cleaning, fourth level cleaning, dehydration treatment and oil-water recovery. Specifically, an oil melting tank includes a box body, uniformly distributed ring cavity sieve columns and dry steam nozzles, the dry steam nozzles are located in the ring cavity sieve columns, the diameter of sieve pores on the inner and outer walls of the ring cavity sieve columns is 5mm, and the bottoms of the ring cavity sieve columns are provided with turnable discharge cover plates. A crushing box includes a shell, uniformly distributed material bins and high pressure water spray guns, the high pressure water spray guns are located at the top of the material bins, and both side walls of the material bins are provided with uniformly distributed round holes. The process involved in the invention has the advantages of reasonable design, safety and environmental protection, good treatment effect, high treatment efficiency, strong treatment capacity, and cost saving, and is economical and applicable.

Description

Technical field: [0001] The invention belongs to the technical field of sludge treatment, and in particular relates to a process for treating oilfield sludge. Background technique: [0002] At present, the technical scheme for oilfield treatment of sludge is: put the sludge into the heating and stirring tank, add demulsifier and cleaning agent and other agents, heat it to 60-80°C, and then enter the two-phase ordinary sewage decanter centrifuge while adding flocculant. The sludge is separated from the oil-water mixture, and then the oil and water are separated. However, the existing technology has the following disadvantages: due to the addition of chemicals in the process, on the one hand, resources are wasted, and on the other hand, secondary pollution can be generated. In addition, this process is difficult to meet the national standard for oil content in sludge. If the sludge contains oil It is also difficult to carry out industrial production if the amount is lower tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C02F11/12C02F11/14
CPCC02F11/00C02F11/12C02F11/121C02F11/127C02F11/14
Inventor 王文王雪惠王慕芹
Owner 大庆世纪新风环保科技有限公司
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