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Method of producing biological fuel oil from poor oil

A fuel oil and low-quality oil technology, applied in the chemical industry, can solve the problems of waste of raw materials, excessive waste, and limited range of raw materials, and achieve the effects of increasing product output, reducing raw material costs, and simplifying post-processing

Inactive Publication Date: 2007-08-15
安徽省粮油科学研究所
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  • Abstract
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Problems solved by technology

However, the content of free fatty acids in inferior oil not only accounts for a relatively large proportion, but also free fatty acids themselves are good raw materials for generating fatty acid methyl esters, and deacidification treatment not only cannot make full use of free fatty acids, resulting in waste of raw materials, but also increases waste. liquid handling burden
Therefore, this production technology has the disadvantages of high production cost, a large limited range of raw materials, a lot of waste, and low yield.

Method used

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Embodiment Construction

[0010] First, filter the inferior oil to remove insoluble impurities. If the inferior oil is solid, melt it by hydrothermal method, filter and remove the impurities in the waste oil, then heat the oil to above 100°C and stir until no water vapor bubbles emerge. Remove the moisture from the oil. The impurity-removed and dehydrated crude oil is pumped into the distillation tower for separation of oil and free fatty acid. Under the conditions of operating pressure 3-5ba and distillation temperature 244°C-250°C, separate for 30 minutes. Optimum separation of oil and free fatty acids in this process can be achieved.

[0011] The separated oil and free fatty acid are respectively used as the raw materials of the two-way reaction for esterification to generate fatty acid methyl ester. The separated oil undergoes alcoholysis reaction with methanol under the action of an alkali catalyst, pumps the oil into the reaction kettle, adds methanol in an amount of 4.5:1 molar ratio of methan...

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Abstract

The invention discloses a preparing method of biological fuel oil with poor oil in chemical industry technical domain, which comprises the following steps: removing water and impurity of raw oil; separating oil and extricate aliphatic acid through vacuum distillation; reacting the oil with carbinol through base catalysis method; getting aliphatic acid methyl ester; reacting extricate aliphatic acid with carbinol through acid catalyst; getting aliphatic acid methyl ester; merging the rough aliphatic acid methyl ester; washing; distilling; refining; getting the product. This invention either increases the adaptability of craft, or improves the availability ratio of raw material.

Description

Technical field: [0001] The invention belongs to the technical field of chemical industry, in particular to a method for extracting biofuel oil from inferior oil. Background technique: [0002] At present, to produce biofuel oil with low-quality oil as raw material, it is generally necessary to neutralize and deacidify the low-quality oil by adding alkali to remove free fatty acids in the low-quality oil. Because the existence of free fatty acid will produce saponification, lead to the increase of catalyst dosage, the reduction of catalytic efficiency, and the conversion rate of reaction will be reduced. Therefore, removal is necessary. However, the content of free fatty acids in inferior oil not only accounts for a relatively large proportion, but also free fatty acids themselves are good raw materials for generating fatty acid methyl esters, and deacidification treatment not only cannot make full use of free fatty acids, resulting in waste of raw materials, but also incre...

Claims

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Application Information

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IPC IPC(8): C10G3/00
CPCY02P30/20
Inventor 季一顺徐经杰沈素文王静
Owner 安徽省粮油科学研究所
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