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A kind of pretreatment method of preparing xylose with bagasse

A sugarcane bagasse and pretreatment technology, applied in the directions of xylose production, sugar production, application, etc., can solve the problems of waste acid environmental pollution and low cost, and achieve the advantages of increasing infiltration degree, low production cost and improving treatment effect. Effect

Active Publication Date: 2020-05-19
广西糖业集团良圻制糖有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a pretreatment method for preparing xylose from bagasse, which can lower the cost of preparing xylose from bagasse and solve the environmental pollution problem of waste acid in the production process at the same time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Prepare the pretreatment method of xylose with bagasse, the process step that adopts is:

[0019] (1) Prepare three cleaning tanks, marked as cleaning tank No. 1, cleaning tank 2 and cleaning tank No. 3, and fill them with clean water; put the bagasse from the sugar factory into cleaning tank 1 first, soak, stir and wash for 10 minutes; Take out the bagasse and put it into the No. 2 cleaning tank after dehydration, soak and stir for 10 minutes; remove the bagasse and put it into the No. 3 cleaning tank after dehydration and soak and stir for 10 minutes; dehydrate to make the bagasse water content ≤ 65%; during the cleaning process, The weight ratio of bagasse to clean water is 1:5. The clean water in No. 1 cleaning pool is replaced with new clean water after cleaning bagasse 4-7 times; the clean water in No. 2 cleaning pool is replaced with new one after cleaning bagasse 5-8 times. Clean water; the clean water in the No. 3 cleaning pool is replaced with new clean water ...

Embodiment 2

[0026] Prepare the pretreatment method of xylose with bagasse, the process step that adopts is:

[0027](1) Prepare three cleaning tanks, marked as cleaning tank No. 1, cleaning tank 2 and cleaning tank No. 3, and fill them with clean water; put the bagasse from the sugar factory into cleaning tank 1 first, soak, stir and wash for 10 minutes; Take out the bagasse and put it into the No. 2 cleaning tank after dehydration, soak and stir for 10 minutes; remove the bagasse and put it into the No. 3 cleaning tank after dehydration and soak and stir for 10 minutes; dehydrate to make the bagasse water content ≤ 65%; during the cleaning process, The weight ratio of bagasse to clean water is 1:10. The clean water in No. 1 cleaning pool is replaced with new clean water after cleaning bagasse 4-7 times; the clean water in No. 2 cleaning pool is replaced with new clean water after cleaning bagasse 5-8 times. Clean water; the clean water in the No. 3 cleaning pool is replaced with new clea...

Embodiment 3

[0034] Prepare the pretreatment method of xylose with bagasse, the process step that adopts is:

[0035] (1) Prepare three cleaning tanks, marked as cleaning tank No. 1, cleaning tank 2 and cleaning tank No. 3, and fill them with clean water; put the bagasse from the sugar factory into cleaning tank 1 first, soak, stir and wash for 10 minutes; Take out the bagasse and put it into the No. 2 cleaning tank after dehydration, soak and stir for 10 minutes; remove the bagasse and put it into the No. 3 cleaning tank after dehydration and soak and stir for 10 minutes; dehydrate to make the bagasse water content ≤ 65%; during the cleaning process, The weight ratio of bagasse to clear water is 1:20. The clear water in cleaning pool No. 1 is replaced with new clear water after cleaning bagasse for 4-7 times; the clear water in cleaning pool No. 2 is replaced with new fresh water after cleaning bagasse for 5-8 times. Clean water; the clean water in the No. 3 cleaning pool is replaced with...

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PUM

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Abstract

The invention discloses a pretreatment method for preparing xylose with bagasse. The method includes the following processing steps that (1) clear water is poured into a first cleaning pool, a second cleaning pool and a third cleaning pool; the bagasse in a sugar factory is placed into the first cleaning pool, the second cleaning pool and the third cleaning pool in sequence to be soaked, stirred and washed for 10min, and then the bagasse is fished out to be dehydrated; (2) the bagasse which is washed and dehydrated for three times is soaked in a phosphoric acid solution with the mass concentration being 0.5%-3% for 1-6 hours, and then dehydration is conducted; (3) the bagasse soaked by the phosphoric acid solution is soaked, stirred and washed for 10min with the two sections of clear water in the step (1), and then dehydration is performed so that the moisture content of the bagasse can be made to be smaller than or equal to 70%; and (4) the bagasse is put into a reaction still for steam explosion, steam-exploded bagasse is collected, and accordingly the bagasse can be pretreated. By the adoption of the method, the xylose preparing cost by the bagasse is made low, and meanwhile the environmental pollution problem of waste acid in the production process is solved.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of by-products of the sugarcane sugar industry, in particular to a pretreatment method for preparing xylose from bagasse. Background technique [0002] Bagasse is the main by-product of the sugarcane sugar industry. It is the fibrous residue of sugarcane stems after sugarcane is mechanically crushed and squeezed to extract juice. It belongs to agricultural solid waste and is a renewable resource. my country is the third largest sugarcane planting country in the world after Brazil and India. According to the statistics of the National Bureau of Statistics, in 2009, the planting area of ​​sugarcane in Guangxi was 15.55 million mu, and the production of sucrose was more than 7 million tons. Calculated at 2 tons of bagasse, the sugar factories in Guangxi produced more than 14 million tons of bagasse. The composition of bagasse is 32%-48% of cellulose, 19%-32% of hemicellulose, 23%-32...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C13K13/00
CPCC13K13/002
Inventor 丰丙政梁朝昱黄耘雷光鸿姜毅农秋阳滕德荣梁智詹慧韦树昌
Owner 广西糖业集团良圻制糖有限公司