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Method for producing ethyl acetate by taking starchiness as main raw materials

A starchy raw material, ethyl acetate technology, applied in microorganism-based methods, biochemical equipment and methods, microorganisms, etc., can solve the problems of high production cost, high energy consumption, and difficulty in comprehensive utilization of resources, and reduce production. cost, energy consumption reduction, production cost reduction effect

Active Publication Date: 2011-08-17
江苏联海生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using such a production process requires high energy consumption, high production costs, and difficulty in comprehensive utilization of resources. Moreover, since ethanol and other chemical products are used as raw materials, they are greatly affected by fluctuations in the upstream market.
This greatly limits the development of ethyl acetate industry

Method used

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  • Method for producing ethyl acetate by taking starchiness as main raw materials
  • Method for producing ethyl acetate by taking starchiness as main raw materials
  • Method for producing ethyl acetate by taking starchiness as main raw materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Taking starchy raw material as cassava as an example, the method for producing ethyl acetate of the present invention comprises the steps:

[0061] 1. Steps of crushing ingredients

[0062] Crush the cassava raw material and pass it through a sieve with a diameter of 1.2 mm to obtain the sieved material. Mix the sieved material with water at a mass ratio of 1:2.5, and control the temperature of the water at 55°C to obtain the mixed material. Feed liquid, the total sugar of mixed feed liquid is 18%;

[0063] 2. Cooking and liquefaction steps:

[0064] Cook the mixed feed liquid, keep the temperature at 90°C, and add liquefaction enzyme 6u / g starchy raw material, and the liquefaction time is 80 minutes to obtain the cooked and liquefied feed liquid;

[0065] 3. Saccharification steps:

[0066] After cooking and liquefaction, cool the above-mentioned cooking and liquefied feed liquid to 58°C, adjust the pH to 4 with concentrated sulfuric acid with a mass concentration o...

Embodiment 2

[0081] Taking starchy raw material as cassava as an example, the method for producing ethyl acetate of the present invention comprises the steps:

[0082] 1. Steps of crushing ingredients

[0083] Crush the cassava raw material and pass it through a sieve with a diameter of 1.5mm to obtain the sieved material. Mix the sieved material with water at a mass ratio of 1:2.7, and control the temperature of the water at 63°C to obtain the mixed material. Feed liquid, the total sugar of mixed feed liquid is 19%;

[0084] 2. Cooking and liquefaction steps:

[0085] Cook the mixed feed liquid, keep the temperature at 98°C, add liquefying enzyme 6u / g starchy raw material, and liquefy it for 90 minutes to obtain the cooked and liquefied feed liquid;

[0086] 3. Saccharification steps:

[0087] After cooking and liquefaction, cool the above-mentioned cooking and liquefied feed liquid to 60°C, adjust the pH to 4.2 with concentrated sulfuric acid with a mass concentration of 98%, add glucoa...

Embodiment 3

[0102] Taking starchy raw material as corn as an example, the method for producing ethyl acetate of the present invention comprises the steps:

[0103] 1. Steps of crushing ingredients

[0104] The corn raw material is crushed and passed through a sieve with a diameter of 1.8 mm to obtain the sieved material, and the sieved material and the gluten processing wastewater are mixed with a mass ratio of 1:3 to control the waste water from the gluten processing. The temperature is 70°C, and the mixed material liquid is obtained, and the total sugar of the mixed material liquid is 20%;

[0105] 2. Cooking and liquefaction steps:

[0106] Cook the mixed feed liquid, keep the temperature at 105°C, add liquefying enzyme 6u / g starchy raw material, and liquefy it for 100 minutes to obtain the cooked and liquefied feed liquid;

[0107] 3. Saccharification steps:

[0108] After cooking and liquefaction, cool the above-mentioned cooking and liquefied feed liquid to 62°C, adjust the pH to...

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Abstract

The invention discloses a method for producing ethyl acetate by taking starchiness as main raw materials. The method comprises the steps of crushing and preparation, stewing and liquefying, saccharifying, mother seed culturing, fermentation, distillation and refining. Compared with the existing ethyl acetate production method, the method disclosed by the invention has the following advantages of changing the shortcomings of a traditional method taking the ethanol as main raw materials by adopting renewable biomass raw materials as main production raw materials; greatly reducing energy consumption and further obviously lowering the production cost by directly conducting rough esterification on the gas at the upper part of a rectifying tower without cooling; not only realizing that the biomass is utilized as raw materials to produce the ethyl acetate, but also being capable of greatly lowering the production cost by adopting the process.

Description

technical field [0001] The invention relates to a method for producing ethyl acetate by using starch as a main raw material, belonging to the field of biochemical industry. Background technique [0002] Ethyl acetate is an important organic chemical raw material with a wide range of uses, which can be used to manufacture acetamide, acetoacetate, methyl heptenone, etc. It is widely used in artificial leather, dyes and other industries. It can also be used as extractant and dehydrating agent, and can also be used in food, packaging and color printing. Tannin extract series products are used in desulfurization leather, cigarette materials, oil field drilling, metal flotation, descaling, etc. Industrially, ethyl acetate is mainly carried out by ethanol and acetic acid under the action of a catalyst for esterification, and after the reaction is finished, it is distilled and refined. Using such a production process requires high energy consumption, high production costs, and dif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/62C12R1/865
Inventor 温志明
Owner 江苏联海生物科技有限公司
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