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Solid acid catalyzed liquid polysaccharide hydrolysis and concentration fixed bed tubular reaction device

A tubular reaction device and a technology of solid acid catalysis are applied in the production, application and production of sugars, etc., and can solve the problems of increasing energy consumption, increasing nutrients, and increasing production costs in the ethanol refining process, achieving easy operation and Maintenance, high reaction efficiency, and the effect of reducing reaction energy consumption

Active Publication Date: 2011-12-14
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The low concentration of sugar in the hydrolyzate not only increases the nutrients that need to be added in the fermentation process, but also the low concentration of ethanol in the fermentation liquid increases the energy consumption of the ethanol refining process, resulting in an increase in production costs

Method used

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  • Solid acid catalyzed liquid polysaccharide hydrolysis and concentration fixed bed tubular reaction device
  • Solid acid catalyzed liquid polysaccharide hydrolysis and concentration fixed bed tubular reaction device
  • Solid acid catalyzed liquid polysaccharide hydrolysis and concentration fixed bed tubular reaction device

Examples

Experimental program
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Effect test

Embodiment 1

[0033] combine figure 1 , taking the single injection reaction of the polysaccharide solution generated after the pretreatment of the biomass raw material (corn stalk) as an example, the operating method of the system in the present invention is described:

[0034](1) Open the valve at the raw material input pipe 1, so that the pretreated polysaccharide solution enters the raw material storage tank 2, and open the stirring shaft 3 in the stirring system, and the stirring shaft 3 drives the stirring paddle 4 to the polysaccharide raw material liquid to stir;

[0035] (2) open the temperature display of fixed bed tubular reactor 5 and the switch of control instrument 6 and electric furnace wire 7, set temperature, slightly higher than required reaction temperature;

[0036] (3) After the temperature displayed by the temperature display and the control instrument 6 reaches the set temperature, the first high-pressure metering pump 8 is turned on to transport the polysaccharide r...

Embodiment 2

[0044] to combine figure 1 , taking the continuous sampling reaction of the polysaccharide solution generated after the pretreatment of the biomass raw material (corn stalk) as an example, the operating method of the system in the present invention is described:

[0045] (1)-(5) are identical with embodiment 1;

[0046] (6) After the reaction is completed, close the discharge pipe 10, adjust the flow of the return pipe 11 and the liquid sugar delivery pipe 12, and realize the shunting of the liquid material, so that a part of the material returns to the raw material storage tank 2, and another part of the material enters the sugar liquid In storage tank 13;

[0047] (7) After the diversion is completed, open the second high-pressure metering pump 14 connected to the bottom of the sugar liquid storage tank 13, adjust the flow rate, and make a part of the sugar liquid return to the raw material storage tank 2 through the reflux concentration pipe 15, according to the needs of t...

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Abstract

The invention provides a fixed bed pipe type reaction device which can realize the catalytic hydrolysis of liquid glycan and the concentration of a sugar liquid at lower reaction temperature. The fixed bed pipe type reaction device comprises a raw material storage tank, a fixed bed pipe type reactor and a sugar liquid storage tank, wherein the raw material storage tank is provided with an agitating device and a device for mechanically sealing the agitating device and is also provided with an air outlet and a liquid outlet; a raw material input pipe is communicated with the raw material storage tank, and a raw material output pipe is communicated with the fixed bed pipe type reactor; an output end of the fixed bed pipe type reactor is communicated with a liquid discharge pipe, a return pipe and a sugar liquid delivery pipe respectively through valves, and the return pipe and the sugar liquid delivery pipe are respectively communicated with the raw material storage tank and the sugar liquid storage tank; and the sugar liquid storage tank is provided with a return concentrating pipe to be communicated with the raw material storage tank. By using the device provided by the invention, the biomass pretreatment step can stay to the extent of generating glycan without further reaction to generate monosaccharide, the energy consumption of the biomass hydrolysis step is greatly reduced,and the economical efficiency of cellulosic ethanol fuel is improved.

Description

technical field [0001] The invention relates to the field of hydrolysis and saccharification of lignocellulosic biomass to produce fermentable sugar, in particular to a novel reaction device suitable for large-scale production of polysaccharide hydrolysis to monosaccharide and sugar solution concentration technology. Background technique [0002] The research on cellulosic fuel ethanol has been carried out for many years, but there are still some key technical problems in its preparation process that have not been resolved. Fermentation provides the raw material. The existing hydrolysis and saccharification processes mainly include acid hydrolysis and enzymatic hydrolysis. The acid hydrolysis has the characteristics of high hydrolysis intensity, fast reaction speed and high conversion rate of raw materials, but due to its high reaction temperature, it causes excessive energy consumption and at the same time , in a high-temperature acidic environment, the generated monosacch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C13K1/02C13K13/00
Inventor 亓伟王琼庄新姝袁振宏许敬亮张宇徐惠娟余强
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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