Method for hydrolyzing biomasses in two steps by utilizing carbon-based solid acid catalyst

A carbon-based solid acid and biomass technology, applied in the fields of application, sugar production, xylose production, etc., can solve the problems of limited development, low reaction efficiency, cumbersome operation procedures, etc., and achieve the goal of reducing operation steps and increasing reaction intensity Effect

Active Publication Date: 2016-12-14
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
View PDF10 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Enzyme hydrolysis has the advantages of mild reaction conditions, good orientation, low requirements for reaction equipment, and convenient subsequent waste liquid treatment. However, the high price and low reaction efficiency of cellulase limit its development.
In addition, before enzymatic hydrolysis, biomass materials often need to be pretreated, and the operation process is relatively cumbersome.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for hydrolyzing biomasses in two steps by utilizing carbon-based solid acid catalyst
  • Method for hydrolyzing biomasses in two steps by utilizing carbon-based solid acid catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The steps of the reaction of utilizing carbon-based solid acid catalyst for two-step hydrolysis of biomass are:

[0057] (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;

[0058] (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;

[0059] (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;

[0060] (4) Open the vent valve 16 in ...

Embodiment 2

[0073] Reaction steps are identical with embodiment 1, difference is:

[0074] 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; turn on the heating device of the hydrolysis reactor, start timing when the temperature in the hydrolysis reactor reaches 140°C, and discharge the hydrolyzate after 2 hours of reaction; reset the temperature of the hydrolysis reactor heating device , based on the initial corncob mass, and 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 for 3 hours. The liquid is drained and retained.

[0075] The hydrolyzate obtained in the two steps was analyzed, and the...

Embodiment 3

[0077] Reaction steps are identical with embodiment 1, difference is:

[0078] 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 hydrolysis reactor, start timing when the temperature in the hydrolysis reactor reaches 140°C, and discharge the hydrolyzate after 2 hours of reaction; reset the heating device of the hydrolysis reactor Temperature, based on the initial corn cob mass, and add water to the hydrolysis reactor according to the mass ratio of the initial corn cob and water in the ratio of 1:40, start timing after the temperature in the hydrolysis reactor reaches 180 °C, after 3 hours of reaction Drain the hydrolyzate and keep it.

[0079] The hydrolyzate obtained in the two step...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for hydrolyzing biomasses in two steps by utilizing a carbon-based solid acid catalyst. The method comprises the following steps: (1) putting the carbon-based solid acid catalyst and biomass materials into a reactor at the mass ratio of (2 to 5) : 1; adding water into the reactor at the mass ratio of the biomass materials of the water of 1 to (10 to 40); after heating a mixture to 120 DEG C to 150 DEG C, reacting for 2 to 3 hours; separating hydrolysate, discharging the hydrolysate into a storage tank for storing pentose, and storing; (2) adding water into the reactor at the mass ratio of the biomass materials of the water of 1 : (10 to 40); after heating the mixture to 140 DEG C to 180 DEG C, reacting for 2 to 4 hours; separating hydrolysate, discharging the hydrolysate into a storage tank for storing hexose, and storing; (3) emptying the materials in the reactor and preparing for the next reaction cycle. According to the method disclosed by the invention, hemicellulose and cellulose in the biomass materials can be effectively catalyzed and be subjected to a hydrolysis reaction, and the method has the characteristics of high hydrolysis rate and high sugar yield.

Description

technical field [0001] The invention relates to the technical field of catalyzing the hydrolysis of biomass raw materials, in particular to a method for hydrolyzing biomass in two steps using a carbon-based solid acid catalyst. Background technique [0002] Biomass resources are the only renewable and clean carbon sources on earth that can be converted into gas, liquid and solid three-phase fuels, and their development and utilization have attracted worldwide attention. Catalytic conversion of biomass raw materials to produce fuel ethanol or platform compounds is an important route among many conversion technologies, but the difficulty of this process technology lies in how to effectively and low-cost catalytic hydrolysis of biomass raw materials to prepare fermentable sugars. The catalytic hydrolysis process of biomass raw materials is not only an important influence of energy input in the whole process, but also the hydrolysis method is related to the difficulty of subsequ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C13K13/00C13K1/02
CPCC13K1/02C13K13/002
Inventor 亓伟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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap