Process for extracting oil from waste oil sludge

A technology for extracting oil and sludge, which is applied in the process of extracting oil from waste sludge and the field of waste sludge treatment, can solve the problems of condensed water azeotropy, large investment, serious pollution, etc., and achieve zero emission, low equipment requirements, and pharmaceutical low cost effect

Inactive Publication Date: 2018-11-16
关向辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires a large amount of investment, and requires a relatively high level of technical personnel for operation. The equipment has a large odor during operation, serious pollution, and serious azeotropic condensation of condensed water.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1 A kind of technology of extracting oil from waste oil sludge

[0033] The waste oil sludge materials in northern Shaanxi (including waste oil sludge, petroleum smelting waste residue, oil and gas pipeline cleaning oil scale and mud-water mixture) were taken and tested before extraction and disposal. The test results are as follows (see Table 1):

[0034] Table 1 Test results of waste sludge material samples

[0035] Flash point (°C)

Combustion value (J / g)

Moisture content (%)

Mud content (%)

112

2652

42

43

[0036] The waste oil sludge sample is completed according to the following steps:

[0037] (1) Pre-treatment of waste oil sludge: Wash the waste oil sludge materials with a square-hole grid-like barbed wire with a side length of 0.6cm, coarsely filter out large particles and suspended slag inside, and filter other fluidity better The feed liquid enters the mixing storage tank;

[0038] (2) Precipitation reacti...

Embodiment 2

[0044] Embodiment 2 A kind of technology of extracting oil from waste oil sludge

[0045] The waste oil sludge material in northern Shaanxi (including waste oil sludge, petroleum smelting waste residue, oil and gas pipeline cleaning and muddy water mixture) was taken and tested before extraction and disposal. The test results are as follows (see Table 3):

[0046] Table 3 Test results of waste sludge material samples

[0047] Flash point (°C)

Combustion value (J / g)

Moisture content (%)

Mud content (%)

106℃

2452J / g

40％

48％

[0048] The waste oil sludge sample is completed according to the following steps:

[0049](1) Pre-treatment of waste oil sludge: Wash the waste oil sludge materials with a square-hole grid-like barbed wire with a side length of 0.4cm, coarsely filter out large particles and suspended slag inside, and filter other fluidity better The feed liquid enters the mixing storage tank;

[0050] (2) Precipitation reaction: ...

Embodiment 3

[0056] Embodiment 3 A kind of process of extracting oil from waste oil sludge

[0057] The waste oil sludge material in northern Shaanxi (including waste oil sludge, petroleum smelting waste residue, oil and gas pipeline cleaning and muddy water mixture) was taken and tested before extraction and disposal. The test results are as follows (see Table 5):

[0058] Table 5 Test results of waste sludge material samples

[0059] Flash point (°C)

Combustion value (J / g)

Moisture content (%)

Mud content (%)

122

2352

41

50

[0060] The waste oil sludge sample is completed according to the following steps:

[0061] (1) Pre-treatment of waste oil sludge: Wash the waste oil sludge materials with a square-hole grid-like barbed wire with a side length of 0.5cm, coarsely filter out the large particles and suspended slag inside, and filter the other fluidity better The feed liquid enters the mixing storage tank;

[0062] (2) Precipitation reaction: A...

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Abstract

The invention discloses a process for extracting oil from waste oil sludge. The process is completed according to the following processes: pretreatment of a waste oil sludge material, precipitation reaction, filtration and oil phase recovery of a crude product. The process for extracting the oil from the waste oil sludge has the advantages that the volume of investment on processing equipment is relatively small, the cost of reagents is low, the whole process is low in requirements on the equipment, the operation is simple and is easily understood, no pollution is caused, targeted treatment isclear, main problems are really solved, the resource utilization of an oil phase is achieved, an aqueous phase can also be normalized and rationalized subsequently, and recovered oil obtained after detection is relatively high in quality; meanwhile, according to the process, wastes are reduced, 'zero emission' of the wastes is greatly boosted, and the final disposal capacity of the wastes is greatly lowered.

Description

technical field [0001] The invention belongs to the waste oil sludge treatment technology in the field of petrochemical industry, in particular to a process for extracting oil from waste oil sludge. Background technique [0002] With the sustained and rapid growth of the national economy, the demand for petroleum resources is increasing. Conventional oil resources can no longer meet the rapid growth of oil demand, and people have begun to turn their attention to unconventional oil resources. As most domestic oil fields enter the middle and late stage of exploitation, the amount of waste oil sludge continues to increase, which contains 15-35% crude oil, 20-40% water and 25-65% sediment. Waste oil sludge has been included in the "National Hazardous Waste Catalog", "National Cleaner Production Promotion Law" and "Solid Waste Environmental Pollution Prevention Law". At present, domestic waste oil sludge treatment methods mainly include incineration, solvent extraction, landfil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C10G1/00B01D17/032
CPCB01D17/0214C02F11/00C02F2301/08C10G1/00
Inventor 关向辉
Owner 关向辉
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