Hydrolysis method for producing xylose from bagasse

A technology for sugar cane bagasse and sugar cane sugar, which is applied in the directions of sugar production, sugar production, application, etc., can solve the problems of unstable hydrolysis process control, low xylose content in the hydrolyzate, low equipment utilization rate, etc., and achieves significant economic benefits. , The effect of stable acid concentration and increased pot loading coefficient

Inactive Publication Date: 2010-09-01
云南省轻工业科学研究院有限公司
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Problems solved by technology

[0003] The invention proposes a hydrolysis method for producing xylose from sugarcane bagasse, which can solve the problems of unstable control of

Method used

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  • Hydrolysis method for producing xylose from bagasse

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0015] (1) Preparation of catalyst solution

[0016] A certain amount of water or dilute hydrolyzate is injected into a water tank, and a certain amount of hydrochloric acid or sulfuric acid is added to prepare a catalyst solution with a concentration of 3-10%.

[0017] (2) Charge hydrolysis

[0018] Add bagasse into the hydrolysis pot, the volume of bagasse is greater than 85% of the capacity of the hydrolysis pot, add the prepared catalyst solution in a ratio of 1:5 to 7 by mass, heat up the hydrolysis pot, start the forced circulation pump at the same time, turn on the heater to The steam valve is heated, kept at 115-130° C., kept warm for 60-90 minutes, and the hydrolysis ends.

[0019] (3) Nesting

[0020] After the hydrolysis is completed, turn off the forced circulation pump, turn off the steam inlet valve of the heater, use the residual pressure in the hydrolysis pot to discharge the material out of the discharge pool, and enter the next section for processing.

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Abstract

The invention discloses a hydrolysis method for producing xylose from bagasse. The bagasse in a cane sugar factory is taken as a raw material; an indirect heating forced circulation system is adopted, in the temperature rise process, a circulating pump pumps out liquid subjected to bagasse-water separation in a hydrolysis pot, and the liquid is indirectly heated; and the liquid is returned to the pot through a distribution system so as to ensure the uniformity and completeness of heat transfer and mass transfer of each part of material in the hydrolysis pot. In the method, dialysis hydrolysis is performed first and then series hydrolysis is performed; the solid matter concentration in the hydrolysis liquid is over 4.0 percent and is improved by 20 to 25 percent than that of the traditional hydrolysis process; and the steam consumption of an evaporation system in the subsequent station is reduced by 15 to 25 percent, the energy consumption of the subsequent station is reduced, and the economic benefit is obvious.

Description

Technical field: [0001] The invention relates to comprehensive utilization in the processing of agricultural products, in particular to a hydrolysis method for producing xylose from sugarcane bagasse. technical background: [0002] At present, the industrial production of xylose in my country adopts chemical hydrolysis process. Hydrolysis is the key link in xylose production. The hydrolysis yield of xylose determines the yield of xylose. The quality and concentration of hydrolyzate determine the purification and concentration cost of xylose. And product quality, play a decisive role in xylose production enterprises to achieve energy conservation and emission reduction goals. At present, domestic xylose production all adopts a conventional hydrolysis process without forced circulation and direct heating. There are several problems in the existing process: (1) the coefficient of filling the pot is not high, generally only reaching 85%, and only 80% when the bagasse is relativel...

Claims

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Application Information

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IPC IPC(8): C13K13/00
Inventor 高正卿陈勇何桂源李亚昆秦牧晏彤
Owner 云南省轻工业科学研究院有限公司
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