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A method and application of biological extractant for treating oily sludge

An extraction agent and biological technology, applied in biological extraction, application of biological extraction agent and treatment method in oil sludge treatment, the application field of extracting crude oil from oil sands, can solve the problem of polluted soil and groundwater resources, high disposal cost, pollution Atmospheric and other issues

Active Publication Date: 2019-05-24
南京蓝目标生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Direct dry distillation: too much energy consumption, high disposal costs
Tempering-mechanical dehydration: The mechanical dehydration device is easy to block, the maintenance rate is high, and the dehydrated cake needs to be transported for disposal, and the follow-up disposal cost is high
It can be seen that these disposal methods have problems such as incomplete disposal, easy to produce secondary pollution, high disposal cost, etc., and cannot fundamentally solve the problem of oily sludge disposal
Existing processes for dealing with such polluted soil or oil sludge are outdated, consume a lot of energy, and the residues of organic compounds and other pollutants in the soil after treatment are high. Some processes also use other organic compound solvents as extraction agents. The extraction method uses " According to the principle of "like dissolves like", a suitable organic solvent is selected as the extraction agent for the recovery and utilization of crude oil in oily sludge. The advantage of the extraction method is that the treatment of oily sludge is more thorough, and most of the petroleum substances can be extracted and recovered.
However, because the extraction agent is expensive and there is a certain loss in the process, the extraction method is costly and even brings more secondary pollution, making soil restoration and recultivation very difficult, and the residue is polluted for a long time volatiles pollute the atmosphere

Method used

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  • A method and application of biological extractant for treating oily sludge
  • A method and application of biological extractant for treating oily sludge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] combine figure 1 , the method of the present invention is specifically:

[0081] 1. The contaminated soil, oil sludge or oil sand is crushed by crusher 1; the crushed soil, oil sludge or oil sand, and limonene washing oil and water are fully stirred, and at the same time, the soil is heated to 50 with steam or hot air ~90 degrees, soil, oil sludge or oil sand: limonene: water = 1:1~3:1~3. The specific ratio needs to be adjusted according to the viscosity of different sludge, oil content, particle size and type of sediment, etc.;

[0082] 2. After preheating and initial stirring, the mixed oil slurry is fully stirred by the spiral agitator 2, so that the mixture is fully stirred, and its viscosity is greatly reduced, and it flows automatically or is transported to the first stage of oil sludge separator 5 by the pump 4 , in the middle of the separator, wash with hot water or steam, sediment and organic petroleum products or crude oil, washed by limonene and hot water, ...

Embodiment 2

[0098] combined with figure 2 , this process adopts the equipment 17A of the rotary film evaporator / sweeping wall evaporator to replace the tubular heating furnace 17 and the deoiling tower 18, and part of the steam from the boiler directly enters the rotary film evaporator / sweeping wall evaporator, and evaporates from the rotary film evaporator The limonene gas from the upper part of the tank enters the cooler; the petroleum and petrochemical products or crude oil from the bottom enters the product oil tank.

[0099] details as follows:

[0100] combine figure 2 , the method of the present invention is specifically:

[0101] 1. The contaminated soil, oil sludge or oil sand is crushed by crusher 1; the crushed soil, oil sludge or oil sand, and limonene washing oil and water are fully stirred, and at the same time, the soil is heated to 50 with steam or hot air ~90°C, soil, oil sand or oil sludge: limonene: water = 1:1~3:1~3. The specific ratio needs to be adjusted accord...

Embodiment 3

[0118] As in embodiment 2, the instructions are attached figure 2 The equipment in it: the equipment 17A of the rotary film evaporator / sweeping wall evaporator, which is replaced by a still, and other process equipment and processes are all the same as in "Example 2". The process index controls the distillation temperature of the still: 150-190 ℃, other indexes are basically the same as in "Example 2".

[0119] The process is suitable for batch production, suitable for small and medium scale production.

[0120] This invention also belongs to the scope of protection.

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Abstract

The invention provides an application method and a process for a biological extraction agent in oily sludge treatment. Lemon olefins are adopted for treating oily sludge at the bottoms of tanks for petroleum, petrochemical and coal chemical industries, impurity oily sludge of pipelines and soil polluted by the oily sludge; the application method and the process are used for treating the oily sludge of different types, extracting petroleum from oil sand, and the like. The application method and the process disclosed by the invention are also suitable for extracting crude oil in oil sand, have the characteristics of high recovery rate, low energy consumption and short soil second ploughing time, and have no secondary pollution to environment.

Description

technical field [0001] The invention belongs to the field of petroleum organic pollutant treatment, and relates to a biological extraction technology, in particular to the application of a biological extraction agent (limonene) and a treatment method in oil sludge treatment, and the application of extracting crude oil from oil sands. Background technique [0002] In recent years, soil pollution around the world, especially in our country, has been very serious. Chemical pollution, petroleum, petrochemical, coal chemical and other organic pollution are particularly prominent. Soil harmless treatment and soil restoration are becoming more and more important. The leakage of petroleum products in the process of oil extraction, transportation, storage, and smelting, as well as the oil at the bottom of tanks and the sludge deposited in pipelines, etc. need to be dealt with in a timely manner. If not handled properly, it will cause serious damage to the surrounding environment. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/00C10G1/04
CPCC02F11/002C10G1/04
Inventor 柴海林
Owner 南京蓝目标生物科技有限公司
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