Continuous hydrolyzation method for cellulose series biomass and apparatus thereof

Abstract

The invention discloses a method for hydrolyzing cellulosic biomass continually, which is characterized in that solid biomass material mixed with water is conveyed into a horizontal type plug flow reactor, and a variable pitch spiral pushing rod is arranged inside the horizontal type plug flow reactor; at the same time, reaction solution is conveyed into the reactor, and the mixture is pushed by the variable pitch spiral pushing rod to advance so that the solid and the liquid are separated from each other; the solid residue is conveyed into a vertical countercurrent bed, then is conveyed upward by a constant pitch vertical spiral pushing rod, and at the same time is conveyed into the reaction solution from the upper part of a vertical countercurrent reactor; and finally, the solid residue is collected at the upper part of the vertical countercurrent reactor, and cellulosic hydrolysate is collected at the lower part of the vertical countercurrent reactor. The invention also comprises a device for realizing the method. The device comprises a continuous feeding air lock system, a horizontal type plug flow reactor and a vertical countercurrent reactor, wherein, a variable pitch spiral pushing rod is arranged inside the horizontal type plug flow reactor; the variable pitch spiral pushing rod comprises a feeding section, a principal reaction section and a pressing section; the feeding section is communicated with the continuous feeding air lock system; and the horizontal type plug flow reactor is communicated with the vertical countercurrent reactor by means of a residue conveying device.

Description

technical field [0001] The invention relates to the technical field of biomass, in particular to a method and device for continuous hydrolysis of cellulosic biomass. Background technique [0002] With the energy crisis and environmental pressure caused by the continuous consumption of a large amount of fossil fuel energy, the development of renewable energy has been paid more and more attention. Among many new energy sources, biomass energy research has become a hot spot in renewable energy research. Biomass is a renewable and clean energy resource. Fuel ethanol is produced by hydrolysis of lignocellulosic biomass to replace some fossil fuels, which is one of the effective methods to alleviate the oil crisis. [0003] Lignocellulosic biomass is the most promising raw material for fuel ethanol production, and its production process includes hydrolysis to produce fermentable sugar, sugar fermentation to ethanol and ethanol dehydration purification. The difficulty lies in the...

AI Technical Summary

Problems solved by technology

The first two patents are ultra-low acid hydrolysis batch reactor and compression percolation device, which can only realize intermittent reaction and semi-continuous reaction, and the efficiency is low, so it is difficult to be used in engineering applications; the third patent realizes the one-step process of biomass Continuous dilute acid catalyzed hydrolysis, because the acid hydrolysis of biomass is a series of reactions, sugar is an intermediate product, and it is difficult to control the further degradation of sugar products by one-step hydrolysis, which will affect the effect of hydrolysis

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