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Fatty-acid methyl ester producing process and apparatus

A technology for fatty acid methyl ester and production process, which is applied in the directions of fatty acid esterification, ester group and hydroxyl reaction preparation, organic chemistry, etc., can solve problems such as uneconomical, high cost of industrialized production, cumbersome production process steps, etc.

Inactive Publication Date: 2007-11-14
李普选
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The steps of the production process are cumbersome, the energy consumption is large, and the cost of industrial production is extremely high, which is extremely uneconomical

Method used

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  • Fatty-acid methyl ester producing process and apparatus

Examples

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Embodiment 1

[0010] Example 1. Fatty acid methyl ester production process. The water and methanol vapor produced by the reaction of vegetable oil fatty acid and methanol are removed from the reaction system. After condensation and gas-liquid separation, the methanol vapor returns to the reaction system to participate in the reaction. The reaction temperature of vegetable oil fatty acid and methanol is controlled at 80°C, the condensation temperature of water and methanol vapor is controlled at 66°C, and the separated methanol vapor is sent to the bottom of the reaction liquid of vegetable oil fatty acid and methanol.

[0011] Fatty acid methyl ester production device, including a reaction kettle 5 with fatty acid inlet 1, methanol inlet 2, catalyst inlet 3, and fatty acid methyl ester outlet 4. The upper part of the reaction kettle 5 is provided with a water and methanol steam outlet 6, and the outlet 6 passes through a pipeline and a condenser The material inlet 8 of 7 is connected, the ga...

Embodiment 2

[0012] Embodiment 2. In this embodiment, the reaction temperature of vegetable oil fatty acid and methanol is controlled at 90°C, and the condensation temperature of water and methanol vapor is controlled at 70°C. Others are the same as embodiment 1.

Embodiment 3

[0013] Embodiment 3. In this embodiment, the reaction temperature of vegetable oil fatty acid and methanol is controlled at 100°C, and the condensation temperature of water and methanol vapor is controlled at 80°C. Others are the same as embodiment 1.

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Abstract

This invention relates to fatty acid methyl ester production process. Water and methanol steam generated by vegetable fatty acid and methanol taking reaction are removed from reaction system, then pass through condensation and gas liquid separation, methanol steam return to reaction system. Control the reaction temperature of vegetable fatty acid and methanol at methanol 80 to 120 deg, control water and methanol devaporation temperature at range of 65 to 100deg, send methanol steam to vegetable fatty acid and methanol reactant liquor bottom. The reaction temperature of vegetable fatty acid and methanol is 90 to 110 deg, devaporation temperature of water and methanol is 70 to 80 deg. Fatty acid methyl ester manufacturing plant includes reactor with material inlet and outlet; autoclave top set water and methanol steam outlet, and connect with condenser material import, condenser gas material outlet connect with gas-liquid separator; gas-liquid separator gas material outlet connect with reactor bottom by pipeline that cascade gas transferpump.

Description

technical field [0001] The invention relates to a production process and device for producing fatty acid methyl ester through acid-catalyzed lipidation reaction using vegetable oil fatty acid (fatty acid content of 0.2%-100%) and methanol as raw materials. Background technique [0002] When vegetable oil fatty acid is used as raw material (fatty acid content is 0.2%-100%) to carry out acid-catalyzed lipidation reaction with methanol to produce fatty acid methyl ester, the product is fatty acid methyl ester and water. The traditional production process is to put the raw material fatty acid and methanol in a batch reaction tank, and carry out the lipidation reaction under the condition of a certain temperature and an acid catalyst. Since water is produced during the reaction, the water dissolves into the reactant methanol. When the concentration of water in the reactant methanol was greater than 5%, since the lipidation reaction is a reversible reaction, the reaction will pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/003C07C69/007C07C67/03C11C3/10
Inventor 李普选
Owner 李普选