Dewatering technology of biological gasoline and diesel oil

A diesel and biological technology, applied in the petroleum industry, hydrocarbon oil dehydration, hydrocarbon distillation, etc., can solve the problems of energy waste and low fuel calorific value, and achieve the effect of being suitable for popularization and application, increasing fuel calorific value, and simple process

Inactive Publication Date: 2010-07-28
王方茂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the problems existing in the above-mentioned prior art, the present invention provides a dehydration process of biogas and diesel oil through careful development and painstaking research. On the prem

Method used

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  • Dewatering technology of biological gasoline and diesel oil
  • Dewatering technology of biological gasoline and diesel oil
  • Dewatering technology of biological gasoline and diesel oil

Examples

Experimental program
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Effect test

Embodiment 1

[0022] The bio-oil produced mainly from straw contains 1.47% benzene and does not contain medium-carbon alcohols. During the evaporation process, they will contain 0.33% water in the azeotrope. Gasoline and diesel are only allowed to contain 0.2% water. Therefore, there is a problem of benzene dehydration; its steps include:

[0023] Send the above-mentioned water-containing bio-oil to an atmospheric distillation device for layered distillation, and recover the distillate liquid containing benzene and water between 80°C and 120°C;

[0024] The above-mentioned distillate liquid containing benzene and water is cooled to normal temperature and sent to a stratifier with a bottleneck to separate benzene and water.

Embodiment 2

[0026] The bio-oil mainly produced from cotton stalks contains 1.39% benzene and no medium-carbon alcohols. During the evaporation process, they will contain 0.31% water in the azeotrope. Gasoline and diesel are only allowed to contain 0.2% water. Therefore, there is also a problem of benzene dehydration; its steps include:

[0027] Send the above-mentioned water-containing bio-oil to an atmospheric distillation device for layered distillation, and recover the distillate liquid containing benzene and water between 80°C and 120°C;

[0028] The above-mentioned distillate liquid containing benzene and water is cooled to normal temperature and sent to a stratifier with a bottleneck to separate benzene and water.

Embodiment 3

[0030] There are a series of medium-carbon alcohols in the biochemical raw materials of biomass waste, and their water content is relatively high, with 15% water. Its steps include:

[0031] Stratified distillation: send the water-containing bio-oil to the atmospheric distillation device for stratified distillation, and the fraction at 79°C is used as the distillate; the fraction at 200°C is condensed through the condenser and enters the gasoline tank; the fraction at 360°C is condensed through the condenser Then enter the diesel tank; recover the distillate liquid containing benzene, water and medium carbon alcohol between 80°C and 120°C;

[0032] Separation of benzene: Cool the above-mentioned distillate liquid containing benzene, water, and medium-carbon alcohol to normal temperature, and send it to a stratifier with a bottleneck to separate benzene. Since the specific gravity of water is 1, the specific gravity of benzene is 0.879. Benzene is insoluble in Water, the speci...

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Abstract

The invention relates to a dewatering technology of biological gasoline and diesel oil, which belongs to the technical filed of biomass oil refining. The invention comprises a stratified distillation step, a benzene separation process and a water and carbon alcohol separation step. The invention perfectly utilizes distillates between 80 DEG C and 117 DEG C in the biological oil preparation process, recovers precious chemical engineering resources on the premise of ensuring the dewatering, improves the fuel heat value, and saves a large number of energy.

Description

technical field [0001] The invention relates to the field of oil refining technology using carbohydrate biomass as raw material, in particular to a process for dehydrating biogas and diesel oil, and belongs to the field of biomass oil refining technology. Background technique [0002] my country's biomass waste production is very large, about 870 million tons per year, and it is a national strategic policy to convert biomass waste into gasoline and diesel. Most biofuel oil contains water, if not removed, it will reduce the calorific value of the fuel and waste energy. Generally, bio-oil contains a considerable part of water, about 10-15%, so bio-oil is generally used as a low calorific value of 30-35MJ / kg Fuel oil is sold at a low price. After removing water, not only the calorific value increases, but also valuable chemical raw materials can be obtained while removing water. However, the water content of bio-oil cannot be removed by general simple distillation at about 100...

Claims

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Application Information

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IPC IPC(8): C10G7/00C10G7/04
Inventor 王方茂
Owner 王方茂
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