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Method for treating oily sludge by biological extraction agent and application of method

An extractant and oil sludge technology, applied in biological extraction, application of biological extractant and treatment method in oil sludge treatment, and application of crude oil extraction from oil sands, can solve the problems of air pollution, high maintenance rate and high disposal cost

Active Publication Date: 2017-07-25
柴海林
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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Existing processes for dealing with such polluted soil or oil sludge are outdated, consume a lot of energy, and the residues of organic compounds and other pollutants in the soil after treatment are high.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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  • Method for treating oily sludge by biological extraction agent and application of method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0081] 1. Contaminated soil, oil sludge, and oil sand are crushed by crushing machinery 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°C with steam or hot air ~90 degree oil sludge: 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 by itself or is transported to the first stage separator 5 of the oil sludge 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, after gr...

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 coming out of the boiler directly enters the rotary film evaporator sweeping wall evaporator, and from the upper part of the rotary film evaporator The limonene gas coming out goes to the cooler; the petroleum petrochemical products or crude oil coming out from the bottom goes to the product tank...

[0099] details as follows:

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

[0101] 1. Contaminated soil, oil sludge, and oil sand are crushed by crushing machinery 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°C 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 a...

Embodiment 3

[0118] As in embodiment 2, the instructions are attached figure 2 Among them, the equipment: the equipment 17A of the rotary film evaporator and the wall-sweeping evaporator is replaced by a still. Other process equipment and processes are the same as in "Example 2". The process index controls the distillation temperature of the still: 150-190°C , 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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IPC IPC(8): C02F11/00C10G1/04
CPCC02F11/002C10G1/04
Inventor 柴海林
Owner 柴海林
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