Method and system for processing oil-containing sludge

A processor and treatment agent technology, applied in sludge treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of environmental pollution and waste of resources in accumulation areas, eliminate pollution sources and reduce pollution intensity Effect

Active Publication Date: 2008-08-27
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The output of ground oil is about 2/1000 of the total output of the oil field, so its output is relatively large. If it is no

Method used

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  • Method and system for processing oil-containing sludge
  • Method and system for processing oil-containing sludge

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0062] Example 1:

[0063] The oily sludge with an oil content of 12% is continuously sent from the raw material storage yard 1 through the first belt conveyor 2 to the solvent scrubber 3 at a speed of 3 tons / hour, and about 10 tons of oily sludge and about 10 tons are injected at the beginning of the work. Add 120 kg of treatment agent to the water and add an appropriate amount of treatment agent every day during operation to maintain the content of the treatment agent at a level of about 0.1% of the weight of the sludge. The treatment agent is made according to the following proportion: 5 parts by weight of silicon Magnesium acid, 8 parts by weight of sodium phosphate, 5 to 10 parts by weight of polyacrylamide, and 5 parts by weight of sodium dodecyl sulfonate. The temperature of the scrubber is maintained at 65-85°C with continuous stirring. The oil phase in the upper layer flows into the intermediate tank, and the first sludge in the lower layer is scraped from the bottom of t...

Example Embodiment

[0064] Example 2:

[0065] The oily sludge with an oil content of 18% is continuously sent from the raw material yard through the first belt conveyor to the solvent scrubber at a speed of 2.5 tons / hour, and about 8 tons of oily sludge and about 12 tons of water are injected when the work is just started. And add 160 kilograms of treatment agent, put in an appropriate amount of treatment agent every day during operation, to maintain the content of the treatment agent at a level of about 0.2% by weight of the sludge, the treatment agent is made of the following proportion: 3 parts by weight of silicic acid Magnesium, 5 parts by weight of sodium phosphate, 5-10 parts by weight of polyacrylamide, and 3-5 parts by weight of sodium dodecyl sulfonate. The temperature of the scrubber is maintained at 65-85°C with continuous stirring. The oil phase in the upper layer flows into the intermediate tank, and the first sludge in the lower layer is scraped from the bottom of the scrubber by the ...

Example Embodiment

[0066] Example 3:

[0067]The oily sludge with an oil content of 23% is continuously sent from the raw material storage yard to the solvent scrubber at a speed of 2 tons / hour through the first belt conveyor, and about 6 tons of oily sludge and about 14 tons of water are injected when the work is just started. And add 240 kilograms of treatment agent, and put in an appropriate amount of treatment agent every day during operation to maintain the content of the treatment agent at a level of about 0.1, 0.2, 0.4, 0.8% of the weight of the sludge. The treatment agent is made of the following proportions: 5 parts by weight of magnesium silicate, 11 parts by weight of sodium phosphate, 10 parts by weight of polyacrylamide, and 3 parts by weight of sodium dodecyl sulfonate. The temperature of the scrubber is maintained at 65-85°C with continuous stirring. The oil phase in the upper layer flows into the intermediate tank, and the first sludge in the lower layer is scraped from the bottom of...

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Abstract

The invention relates to a method for processing oil-bearing mud, which comprises the following steps: firstly, mixing and stirring oil-bearing mud and right amount of water in a washer under the condition of heating, stewing, separating out oil phase and a first sludge layer, secondly, stirring in a middle tank, heating oil phase from the washer, stewing, and then discharging water and sludge on the lower portion, keeping oil phase on the upper portion, thirdly, finely separating oil phase which is kept in the middle tank in a centrifugal machine through a centrifugal effect, discharging oil phase which is separated into an oil storage tank, fourthly, stewing oil products which is from the centrifugal machine after dewatering and desliming in the oil storage tank, and getting recovery oil, fifthly, cavitating first mud residue from the washer in a mud residue processor, stripping residual oil in the first mud residue, and discharging oil phase on the upper portion of the mud residue processor into the middle tank. The invention also relates to a system which utilizes the method to process oil-bearing mud. Oil-bearing rate of oil-bearing mud which is processed by the method and the system of the invention is below 4%.

Description

technical field [0001] The invention relates to the fields of oil extraction and refining, storage and transportation of crude oil, in particular to a method for recovering crude oil from oily sludge or ground oil and a system for implementing the method. Background technique [0002] In the process of petroleum development and exploitation, oily sludge will be produced, which is often called "ground oil". Ground oil is generally brownish-yellow or black, and its common forms are lumpy, granular, powdery and muddy, and usually contains 10-60% crude oil and a small amount of water. The output of ground oil is about 2 / 1000 of the total output of the oil field, so its output is relatively large. If it is not treated, it will not only cause waste of resources, but also cause serious environmental pollution to the accumulation area. [0003] Therefore, the petroleum industry needs technologies for efficiently recovering petroleum from oily sludge. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): C10G1/00C02F11/00B03B9/02
Inventor 里群王嘉麟
Owner 里群
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