Method for improving steam explosion effect of Caragana korshinskii

A technology of steam and caragana, applied in the direction of biofuel, fermentation, etc., can solve the problems of air cushion damage of steam explosion equipment, poor pretreatment effect of caragana, poor hardwood treatment effect, etc. Penetration effect

Inactive Publication Date: 2019-01-11
TIANJIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Steam explosion is mainly suitable for gramineous plants and cork cork of some tree species. It has poor treatment effect on hardwood and will cause damage to steam explosion equipment.
The author found in the research that the common steam explosion pretreatment method has a poor pretreatment effect on caragana, and greatly damages the sealing air cushion in the steam explosion equipment.

Method used

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  • Method for improving steam explosion effect of Caragana korshinskii
  • Method for improving steam explosion effect of Caragana korshinskii

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0026] Pre-treatment of steam explosion: crush the dried caragana through a 20-mesh sieve, and use NaCO 3 After soaking in the solution for 24 hours, air-dry to a moisture content of 20%.

[0027] Weigh 200g of the material obtained in the above steps into a 5L reaction cylinder of steam explosion equipment. The steam explosion reaction conditions are pressure 2.5MPa, duration 8min, and instant explosion.

[0028] The material obtained above was repeatedly washed and filtered with deionized water, then dried and pulverized through a 60-mesh sieve.

[0029] The material obtained in step (3) is subjected to enzymatic hydrolysis, the enzymatic hydrolysis system is 20ml, the amount of solids added is 15-25% (w / w), and the enzymatic hydrolysis conditions: rotation speed 240rpm, temperature 50°C, time 24h.

Embodiment example 2

[0031] Pre-treatment of steam explosion: crush the dried caragana through a 20-mesh sieve, and use NaCO 3 After soaking in the solution for 24 hours, air-dry to a moisture content of 20%.

[0032] Weigh 200g of the material obtained in the above steps into a 5L reaction cylinder of steam explosion equipment. The steam explosion reaction conditions are pressure 2.8MPa, duration 6min, and instant explosion.

[0033] The material obtained above was repeatedly washed with deionized water, then dried and pulverized through a 80-mesh sieve.

[0034] The material obtained in step (3) is subjected to enzymatic hydrolysis, the enzymatic hydrolysis system is 20ml, the amount of grape solids added is 15-25% (w / w), and the enzymatic hydrolysis conditions: rotation speed 240rpm, temperature 50°C, time 24h.

Embodiment example 3

[0036] Pre-treatment of steam explosion: crush the dried caragana through a 20-mesh sieve, and use NaHCO 3 After soaking in the solution for 24 hours, air-dry to a moisture content of 20%.

[0037] Weigh 200g of the material obtained in the above steps into a 5L reaction cylinder of steam explosion equipment. The steam explosion reaction conditions are pressure 2.2MPa, duration 6min, and instant explosion.

[0038] The material obtained above was repeatedly washed and filtered with deionized water, then dried and pulverized through a 60-mesh sieve.

[0039] The material obtained in step (3) is subjected to enzymatic hydrolysis, the enzymatic hydrolysis system is 20ml, the amount of solids added is 15-25% (w / w), and the enzymatic hydrolysis conditions: rotation speed 240rpm, temperature 50°C, time 24h.

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Abstract

The invention discloses a method for improving the steam explosion effect of Caragana korshinskii, which comprises the following steps: (1) crushing Caragana korshinskii to be over 20 meshes, soakingthe crushed Caragana korshinskii in weak base solution for 10-24 hours, air-drying to the water content of 10-20%; (2) performing steam explosion pretreatment on the material obtained in the step (1);and (3) enzymatic hydrolysis: additive amount of substrate: 15-25%, and additive amount of enzyme: 10-50 FPU / g cellulose. The invention can effectively improve the steam explosion pretreatment effectof Caragana korshinskii and reduce the damage to the equipment in the steam explosion process. The method is simple and the cost is low.

Description

technical field [0001] The invention belongs to the field of biofuels, and relates to a method for improving the steam explosion effect of caragana. Background technique [0002] On the one hand, the use of shrubs such as caragana to develop bio-energy is beneficial to reduce the excessive exploitation of resources. On the other hand, the production of bio-ethanol from cheap and abundant caragana has significant economic benefits and broad market prospects. [0003] Caragana is one of the important tree species for soil and water conservation and sand-fixing afforestation in Northwest China, North China, and Northeast China. Drought-resistant, cold-resistant, and high-temperature-resistant, it is an xerophytic shrub in arid grasslands and desert grasslands. It can also grow in loess hilly areas, hillsides, and ditches. It can grow normally in mobile sandy land and inter-dune lowland with extremely poor fertility and sand layer moisture content of 2 to 3%, as well as on fix...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/10
CPCC12P7/10C12P2201/00Y02E50/10
Inventor 钟成李栋梁舒月力贾士儒谢燕燕
Owner TIANJIN UNIV OF SCI & TECH
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