Reaction system capable of hydrolyzing biomass through two steps by aid of carbon-based solid acid catalyst

A carbon-based solid acid and reaction system technology, applied in the fields of application, sugar production, xylose production, etc., to achieve the effect of reducing operation steps, less corrosion, and improving the difficulty of reaction

Active Publication Date: 2016-12-07
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the corrosiveness of the liquid acid itself is an important obstacle in the design and manufacture of the reactor, and the material of the reactor must meet the requirements of acid corrosion resistance

Method used

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  • Reaction system capable of hydrolyzing biomass through two steps by aid of carbon-based solid acid catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The steps of the reaction of utilizing carbon-based solid acid catalyst for two-step hydrolysis of biomass are:

[0052] (1) Open the second pipeline valve 17 and the third pipeline valve 18 in the water pipeline, add water to the second water storage tank 1 and the first water storage tank 2 respectively, and check the airtightness and valves of the entire system;

[0053] (2) In the solid-liquid premixing tank 3, add carbon-based solid acid catalyst and biomass material (biomass material is a corn cob with a particle size of 0.2-5mm) and water with a mass ratio of 2:1, and open the premixing tank Stir the motor 12 and set the speed in the control system 33, and open the first pipeline valve 15, so that the solid-liquid materials in the solid-liquid premix tank 3 are evenly mixed;

[0054] (3) Turn on the electric heater 26 in the heat transfer oil tank 5, and set the heating temperature to 120° C. through the control system 33;

[0055] (4) Open the vent valve 16 in ...

Embodiment 2

[0068] Reaction steps are identical with embodiment 1, difference is:

[0069] Select corncobs with a particle size of 0.2-5mm as the biomass material, put the carbon-based solid acid catalyst and corncobs into the reactor according to the mass ratio of 5:1, and put the corncobs and water into the reactor according to the mass ratio of 1:40 Add water to the hydrolysis reactor in the ratio of 10%; turn on the heating device of the hydrolysis reactor, start timing after the temperature in the reactor reaches 140°C, and discharge the hydrolyzate after 2 hours of reaction; reset the temperature of the heating device of the hydrolysis reactor, Based on the initial corncob mass, add water to the hydrolysis reactor according to the ratio of the initial corncob to water mass ratio of 1:40, start timing after the temperature in the hydrolysis reactor reaches 170 °C, and react the hydrolyzate after 3 hours Exhaust retention.

[0070] The hydrolyzate obtained in the two steps was analyz...

Embodiment 3

[0072] Reaction steps are identical with embodiment 1, difference is:

[0073] Select the corn cob with a particle size of 0.2-5mm as the biomass material, put the carbon-based solid acid catalyst and the corn cob into the hydrolysis reactor according to the mass ratio of 5:1, and the corn cob and water according to the mass ratio of 1: Add water to the hydrolysis reactor at a ratio of 40; turn on the heating device of the reactor, start timing when the temperature in the reactor reaches 140°C, and discharge the hydrolyzate after 2 hours of reaction; reset the temperature of the heating device of the hydrolysis reactor, Based on the initial corncob mass, add water to the hydrolysis reactor according to the mass ratio of the initial corncob and water at a ratio of 1:40, start timing when the temperature in the hydrolysis reactor reaches 180°C, and react for 3 hours. The liquid is drained and retained.

[0074] The hydrolyzate obtained in the two steps was analyzed, and the yie...

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Abstract

The invention discloses a reaction system capable of hydrolyzing biomass through two steps by the aid of a carbon-based solid acid catalyst. Carbon-based solid acid is taken as a catalyst, biomass materials are completely hydrolyzed through a two-step reaction, and a xylose / xylan and glucose / glucose reaction system is obtained. By the use of the system, two-step hydrolysis of biomass materials can be realized under the condition that the operation strength in the reaction process is reduced, no corrosion is caused to a reaction device, follow-up waste liquids are not required to be neutralized, and the operation cost is reduced; after the reaction, heat of hydrolysate is recovered, and input of total heat of the system is reduced.

Description

technical field [0001] The invention relates to the technical field of catalytic biomass raw material hydrolysis devices, in particular to a reaction system for two-step hydrolysis of biomass using a carbon-based solid acid catalyst. Background technique [0002] Lignocellulosic biomass is the only carbon-containing renewable resource on earth that can be converted into gas, liquid and solid three-phase fuels, and it is also the earliest fuel resource used by human society. How to realize its efficient conversion to prepare fuel is the key to effectively replace the use of fossil fuels in today's society. Therefore, its conversion and utilization technology has attracted extensive attention from all over the world. [0003] Converting hemicellulose and cellulose in lignocellulosic biomass raw materials into sugars is the first step in converting them into fuel ethanol, fuel butanol and platform compounds, and the conversion efficiency is related to the quality of subsequent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C13K13/00C13K1/02
CPCC13K1/02C13K13/002
Inventor 亓伟张续成王琼谭雪松王闻余强庄新姝袁振宏王忠铭
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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