Process for extracting oil

A technology for extracting oil and fat, which is applied in the direction of fat oil/fat production and fat generation, can solve the problems of large solvent loss, long extraction time, and large loss, and achieve low energy and solvent consumption, high comprehensive extraction rate, and put into production out higher effect

Inactive Publication Date: 2010-01-06
侯金荣 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The deoiling efficiency of the pressing method is low, and more than 4% of the oil is often left in the cake, or even as high as 10%. material
[0005] Leaching method, the extraction time is long, the efficiency is low, the solvent loss is large, the solvent recovery is difficult, and it is limited to oil cakes or materials with less oil

Method used

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  • Process for extracting oil

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Put 901 kg of tung seeds crushed to 10 meshes into the extraction kettle 1, close the valves 3, 5, 11, and 13, open the high vacuum butterfly valve 2, start the vacuum pump 7 to remove the air in the extraction kettle 1, and close the high vacuum butterfly valve 2 , open the valve 13, start the metering pump 14, the liquid in the liquid dimethyl ether storage tank 12 is heated by the exchanger 15, adopt the liquid dimethyl ether as the extraction solvent, and pass into the extraction by the weight ratio of material: solvent=1:2 In the kettle 1, under the conditions of a pressure of 5 kg and an extraction temperature of 30°C, after extraction for 30 minutes, open the decompression valve 3, and under the conditions of a pressure of 1 kg and a temperature of 20°C, the liquid is separated by the separation kettle 4 Grease and dimethyl ether gas are discharged, and the dimethyl ether gas enters the gas storage tank 8, and the compressor 9 is started. After the dimethyl ether ...

Embodiment 2

[0028] Put 685 kg of tung tree seeds crushed to 40 objects into the extraction kettle 1, close the valves 3, 5, 11, and 13, open the high vacuum butterfly valve 2, start the vacuum pump 7 to remove the air in the extraction kettle 1, close the high vacuum butterfly valve 2, Open the valve 13, start the metering pump 14, heat the liquid in the liquid dimethyl ether storage tank 12 through the exchanger 15, adopt the liquid dimethyl ether as the extraction solvent, and pass it into the extraction kettle at a weight ratio of material: solvent=1:24 In 1, under the conditions of a pressure of 30 kg and an extraction temperature of 90°C, after extraction for 120 minutes, the decompression valve 3 is opened, and the liquid is separated through the separation tank 4 under the conditions of a pressure of 5 kg and a temperature of 60°C. Grease and dimethyl ether gas, dimethyl ether gas enters the gas storage tank 8, starts the compressor 9, after the dimethyl ether gas is compressed, it ...

Embodiment 3

[0033] Put 362 kg of tung tree seed shells crushed to 25 mesh into extraction kettle 1, close valves 3, 5, 11, and 13, open high vacuum butterfly valve 2, start vacuum pump 7 to extract the air in extraction kettle 1, and close high vacuum butterfly valve 2 , open the valve 13, start the metering pump 14, heat the liquid in the liquid dimethyl ether storage tank 12 through the exchanger 15, and use liquid dimethyl ether as the extraction Agent, pass in the extraction kettle 1 by the weight ratio of material: solvent=1: 3, be 8 kilograms in pressure, under the condition of 35 ℃ of extraction temperature, after extracting for 40 minutes, open decompression valve 3, in pressure be 5 kg, at a temperature of 50°C, the liquid is separated from oil and dimethyl ether gas through the separation tank 4, and the dimethyl ether gas enters the gas storage tank 8, and the compressor 9 is started. After the dimethyl ether gas is compressed, it passes through the cooler 10 is cooled to liqu...

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Abstract

The invention discloses a extracting method of grease, which is characterized by the following steps: 1) disintegrating materials to 10-40 order; 2) adopting liquid dimethyl ether as extraction solvent; conveying to materials with the rate of material and dissolvent at 1:2-1:24; extracting 30-120 min under the condition of pressure at 5-30 kilogram at 30-90 Deg C; 3) separating grease in the condition of pressure at 1-5 kilogramat 20-60 Deg C. The invention simplifies the manufacturing craft, which improving extracting rate effectively.

Description

technical field [0001] The invention relates to a method for extracting oil, in particular to a method for extracting oil with liquid dimethyl ether. Background technique [0002] At present, the main methods of low-cost industrial extraction of oil are pressing method and extraction method [0003] There are following defects and deficiencies in above method: [0004] The deoiling efficiency of the pressing method is low, and more than 4% of the oil is often left in the cake, or even as high as 10%. of materials. [0005] The leaching extraction method has long extraction time, low efficiency, large solvent loss, difficult solvent recovery, and is limited to oil cakes or materials with less oil. Contents of the invention [0006] The method of the present invention overcomes the shortcomings of the above methods, and provides a simple process, high extraction rate, less impurity in the product, less energy consumption, less solvent loss, less required equipment, low pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B1/10
Inventor 罗波侯金荣侯金春侯金华
Owner 侯金荣
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