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Hydrothermal saccharification method and device for cellulose biomass

A cellulose and biomass technology, applied in sugar production, sugar production, food science and other directions, can solve the problems of increasing the difficulty of direct utilization of saccharification products, reducing the quality of the output material, and the complexity of the hydrolysis device. The effect of rapid chemical process, expansion of production scale, and elimination of detoxification process

Inactive Publication Date: 2012-12-12
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method and device for hydrothermal saccharification of cellulosic biomass to solve the problem of by-product poisons (mainly represented by furfural) and the target product in the hydrolyzate obtained by the hydrolysis method of cellulosic biomass in the prior art. The mixing of reducing sugar reduces the quality of the output, increases the difficulty of direct utilization of the saccharification product, and complicates the technical problems of the hydrolysis unit

Method used

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  • Hydrothermal saccharification method and device for cellulose biomass
  • Hydrothermal saccharification method and device for cellulose biomass
  • Hydrothermal saccharification method and device for cellulose biomass

Examples

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Embodiment 1

[0038] The collected wheat stalks were dried and crushed to a length of less than 1 cm for preservation. Weigh 25g of crushed wheat straw, put it into the reactor, seal the reactor, turn on the condensed water, turn on the metering pump, add 0.05wt% dilute sulfuric acid according to the ratio of solid to liquid ratio of 1:10, and control the flow rate of the metering pump at 15mL / min, stop adding acid after the dilute sulfuric acid in the reaction kettle reaches the required amount. Turn on the heating and stirring switch of the reaction kettle, start heating at a stirring speed of 80 r / min, the temperature is 60-230° C., and the pressure is kept at 1 MPa during the reaction. The temperature rise adopts a gradient temperature rise method, and the temperature is divided into nine nodes: 60°C, 90°C, 110°C, 130°C, 150°C, 170°C, 190°C, 215°C and 230°C. For the heating rate curve, see figure 2. When the temperature in the reactor rises to 60°C, open the pressure reducing valve a...

Embodiment 2

[0044] The collected wheat stalks were dried and crushed to a length of less than 1 cm for preservation. Weigh 25g of crushed wheat straw, put it into the reactor, seal the reactor, turn on the condensed water, turn on the metering pump, add 0.10wt% dilute sulfuric acid according to the ratio of solid to liquid 1:10, and control the flow rate of the metering pump at 15mL / min, stop adding acid after the dilute sulfuric acid in the reaction kettle reaches the required amount. Turn on the heating and stirring switch of the reaction kettle, start heating at a stirring speed of 80 r / min, the temperature is 60-230° C., and the pressure is kept at 2 MPa during the reaction. The temperature rise adopts a gradient temperature rise method, and the temperature is divided into nine nodes: 60°C, 90°C, 110°C, 130°C, 150°C, 170°C, 190°C, 215°C and 230°C. For the heating rate curve, see figure 2 . When the temperature in the reactor rises to 60°C, open the pressure reducing valve at the di...

Embodiment 3

[0050] The collected wheat stalks were dried and crushed to a length of less than 1 cm for preservation. Take by weighing the wheat straw of 25g pulverization, put into reactor, seal reactor, and open condensed water, open metering pump, add the dilute sulfuric acid of 0.50wt% according to the ratio of solid-liquid ratio 1:10, the flow velocity control of metering pump At 15mL / min, stop adding acid after the dilute sulfuric acid in the reactor reaches the required amount. Turn on the heating and stirring switch of the reactor, start heating at a stirring speed of 80 r / min, the temperature is 60-230° C., and the pressure is kept at 3 MPa during the reaction. The temperature rise adopts a gradient temperature rise method, and the temperature is divided into nine nodes: 60°C, 90°C, 110°C, 130°C, 150°C, 170°C, 190°C, 215°C and 230°C. For the heating rate curve, see figure 2 . When the temperature in the reactor rises to 60°C, open the pressure reducing valve at the discharge po...

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Abstract

The invention discloses a hydrothermal saccharification method for cellulose biomass, which comprises the following steps: pulverizing cellulose biomass; mixing the pulverized cellulose biomass and 0.05-1.00 wt% dilute acid solution in a reactor in a solid-to-liquid ratio of 1:(6-20); and heating the cellulose biomass and dilute acid mixture in the reactor while stirring to carry out reaction at 60-230 DEG C under the reaction pressure of 1-4MPa under sealed conditions, wherein the heating adopts a gradient heating mode, i.e. the temperature is divided into multiple temperature nodes of which the temperature intervals are 15-50 DEG C, the hydrolysate obtained by reaction is discharged and collected and new dilute acid solution is injected every time coming to a temperature node, and the hydrolysates at different temperature nodes are collected respectively. The saccharides obtained by decomposing cellulose biomass by using the method and device disclosed by the invention can be separated immediately after being generated, thereby effectively enhancing the saccharine yield, greatly lowering the toxic components in the saccharides and making a great step forward for industrialized production of saccharides from biomass.

Description

technical field [0001] The invention relates to the technical field of biomass new energy, in particular to a method and device for hydrothermal saccharification of cellulose biomass, and in particular to a technology and device for gradient temperature rise coupled continuous ultra-low acid saccharification of cellulose biomass. Background technique [0002] Biomass refers to various organisms produced through photosynthesis using the atmosphere, water, land, etc., that is, all living organic substances that can grow are commonly referred to as biomass, including plants, animals and microorganisms. The broad concept of biomass includes all plants, microorganisms, and animals that feed on plants and microorganisms and the wastes they produce. Representative biomass such as crops, crop waste, wood, wood waste and animal manure. The narrow concept of biomass mainly refers to lignocellulose (lignin for short) such as straw and trees other than grain and fruit in the process of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C13K13/00
Inventor 夏前勇申哲民温钰娟檀雅琴王文昌纪文超
Owner SHANGHAI JIAO TONG UNIV
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