Method for preparing fumaric acid ester by using plant straws

A technology of plant straw and alcohol fumarate, which is applied in the field of fumarate preparation, can solve the problems such as no research report on polyester oil synthetic lubricant fumarate, and achieves easy control of process conditions and yield. The effect of high rate and high product purity

Inactive Publication Date: 2010-10-20
北京雷恩新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Although there are many ways to utilize plant straw, there is no research report on the prep

Method used

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  • Method for preparing fumaric acid ester by using plant straws
  • Method for preparing fumaric acid ester by using plant straws
  • Method for preparing fumaric acid ester by using plant straws

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1. Raw material pretreatment:

[0037] Corn cobs with a moisture content of ≤15% are crushed into straw fragments of 1-3 cm in size and then used for later use.

[0038] 2. Hydrolysis to produce furfural:

[0039] 1) Loading

[0040] Put the corn cob fragments into the hydrolysis kettle from the feeding port of the hydrolysis kettle, and then add dilute H 2 SO 4 Solution, mixed evenly, wherein: the inner wall of the hydrolysis kettle is sprayed with enamel anti-corrosion materials, and the pressure resistance of the hydrolysis kettle is ≥1Mpa; dilute H 2 SO 4 The mass percentage concentration of solution is 10%; Corncob broken section and dilute H 2 SO 4 The proportioning by weight of solution is 1: 3, and the broken section of corn cob and dilute H in the hydrolysis kettle 2 SO 4 The mixed volume of the solution is 70% of the volume of the hydrolysis tank;

[0041] 2) acid hydrolysis

[0042] Close the feed port cover of the hydrolysis kettle, open the exhaus...

Embodiment 2

[0059] 1. Raw material pretreatment:

[0060] The sunflower shells with a moisture content of ≤15% are crushed into 1-3 cm sunflower shell fragments for later use.

[0061] 2. Hydrolysis to produce furfural:

[0062] 1) Loading

[0063] Put the sunflower shell fragments into the hydrolysis kettle from the feeding port of the hydrolysis kettle, and then add dilute H 2 SO 4 Solution, in which: the inner wall of the hydrolysis kettle is sprayed with enamel anti-corrosion materials, and the pressure resistance of the hydrolysis kettle is ≥1Mpa; dilute H 2 SO 4 The mass percentage concentration of solution is 8%; Sunflower shell fragment and dilute H 2 SO 4 The proportioning by weight of solution is 1: 4, and the broken section of sunflower shell and dilute H in the hydrolysis kettle 2 SO 4 The mixed volume of the solution is 60% of the volume of the hydrolysis tank;

[0064] 2) acid hydrolysis

[0065]Close the feed port cover of the hydrolysis kettle, open the exhaust v...

Embodiment 3

[0082] 1. Raw material pretreatment:

[0083] Sorghum stalks with a moisture content of ≤15% are crushed into straw fragments of 1-3 cm for later use.

[0084] 2. Hydrolysis to produce furfural:

[0085] 1) Loading

[0086] Put the straw fragments into the hydrolysis kettle from the feeding port, and then add the dilute H 2 SO 4 Solution, in which: the inner wall of the hydrolysis kettle is sprayed with enamel anti-corrosion materials, and the pressure resistance of the hydrolysis kettle is ≥1Mpa; dilute H 2 SO 4 The mass percent concentration of the solution is 12%; the straw fragments and dilute H 2 SO 4 The weight ratio of the solution is 1: 3.5, and the straw fragments and dilute H in the hydrolysis kettle 2 SO 4 The mixed volume of the solution is 65% of the volume of the hydrolysis tank;

[0087] 2) acid hydrolysis

[0088] Close the feed port cover of the hydrolysis kettle, open the exhaust valve on the upper part of the hydrolysis kettle, and turn on the coil...

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Abstract

The invention discloses a method for preparing fumaric acid ester by using plant straws. The method comprises the following sequential steps: 1) leading the plant straws to carry out acid hydrolysis reaction so as to prepare furfural; 2) leading the furfural to carry out oxidation reaction so as to prepare fumaric acid; and 3) leading the fumaric acid and 2-octanol to carry out esterification reaction so as to prepare the fumaric acid ester. The 2-octanol fumaric acid ester prepared by the method not only is the main indispensable raw material for producing novel high-performance synthetic lubricating oil polyester oil, but also has high product purity and high yield; and in addition, the invention also opens up a new material resource and method for producing the 2-octanol fumaric acid ester, and provides a practical way for industrial production of the 2-octanol fumaric acid ester and the plant straws and comprehensive utilization of the plant straws.

Description

technical field [0001] The invention relates to a carboxylic acid ester and a preparation method thereof, in particular to a preparation method of a fumaric acid ester prepared by reacting fumaric acid with a hydroxyl group of an organic compound. Background technique [0002] Polyester oil is a new type of synthetic lubricating base oil with excellent lubricity, viscosity-temperature characteristics, stability, and compatibility with sealing materials. It is mainly used in fields requiring high lubricity and stability, and can show high cost performance advantages, including all automotive internal combustion engine oils, gear oils, and heavy-duty metal processing oils. 2-octanol fumarate is an indispensable main raw material for the newly developed polyester oil lubricating oil. At present, there is no domestic manufacturer of 2-octanol fumarate, and the import cost is very high, which seriously hinders the application of this type of lubricating oil in the domestic marke...

Claims

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Application Information

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IPC IPC(8): C07C69/60C07C67/08
Inventor 王建钢
Owner 北京雷恩新材料科技有限公司
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