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Lignocellulose raw material continuous treatment method

A technology of lignocellulose and a treatment method, which is applied in the field of comprehensive utilization of biomass, can solve the problems of acidification and oxidation treatment being difficult to promote on a large scale, not yet popularized on a large scale, and cumbersome to prepare straws, so as to improve the pretreatment effect and the treatment effect. , the effect of continuous processing

Pending Publication Date: 2021-02-26
咸阳生物制造产业技术研究院
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thermal processing is to use high-pressure steam or thermal spray effect to destroy the lignocellulose structure of straw, degrade hemicellulose, and crush it into granules. This method is cumbersome and costly to prepare straw, and has not yet been widely promoted.
The acidification and oxidation treatment of straw is still difficult to scale up
The effect of alkalization treatment is relatively good, and the degradation effect of cellulose and hemicellulose of straw is obvious, which is often used in production; the effect of acid treatment of straw is poor; and only hemicellulose is partially degraded when treated with oxidant

Method used

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  • Lignocellulose raw material continuous treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] refer to figure 1 , a kind of lignocellulose continuous processing method, comprises the steps:

[0029] Step 1), crush 1 kg of agricultural and forestry waste wheat straw to 1 to 2 cm, add water in a ratio of 1:2 to water, add bacillus, compact and block, place in a closed anaerobic Sealed anaerobic fermentation in a fermentation bag at room temperature for 7 days.

[0030] Step 2), after the fermentation has a sour aroma, the fermented lignocellulose raw material is subjected to solid-liquid separation using a plate and frame filter press, and the liquid part is concentrated (25% in solid content) and mixed with a soluble carrier maltodextrin ( Add maltodextrin 25kg per 100kg concentrate) and mix and dry to obtain 289 grams of directional feed additive product biological enzyme (which is rich in compound beneficial microorganisms (including spores, yeasts, lactic acid bacteria, butyric acid bacteria) and their metabolites, short chain fatty acid enzyme product). Th...

Embodiment 2

[0035] A method for continuous processing of lignocellulose, comprising the steps of:

[0036] Step 1), crush 1 kg of agricultural and forestry waste leaves to 1-2 cm, add water to make the moisture content of the raw material 65%, add yeast, compact and block, seal the anaerobic in a closed anaerobic bucket at room temperature Fermented for 15 days.

[0037] Step 2), after the fermentation has a sour flavor, a screw extruder is used to separate the fermented lignocellulose raw material from solid and liquid, and the liquid part is concentrated (solid content concentration 30%) and mixed with the insoluble carrier bran for drying to obtain The directional feed additive product biological enzyme is 306 grams, and the drying method is scraper drying. The solid part enters the next process.

[0038] Step 3), the solid part (water content 70%) in step 2) is mixed with solid potassium hydroxide in a weight ratio of 15:1, and water with a weight ratio of 8:1 to the solid part is a...

Embodiment 3

[0042] A method for continuous processing of lignocellulose, comprising the steps of:

[0043] Step 1), crush 1 kg of agricultural and forestry waste corn stalks to 1 to 2 cm, add water in a ratio of 1:3 to water, add lactic acid bacteria, compact and block, and place in a closed anaerobic pool Sealed anaerobic fermentation at medium and room temperature for 10 days.

[0044] Step 2), after the fermentation has a sour aroma, the fermented lignocellulose raw material is subjected to solid-liquid separation using a plate and frame filter press, and the liquid part is concentrated (solid content 20%) and then mixed with the soluble carrier cyclodextrin Dry to obtain 276 grams of directional feed additive product bio-ferment, and the drying method is oven drying. The solid part enters the next process.

[0045] Step 3), by weight, the water content of the solid part is 60%, mixed with solid calcium hydroxide in a weight ratio of 12:1, and adding water with a weight ratio of 6:1 ...

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Abstract

The invention discloses a lignocellulose raw material continuous treatment method. The lignocellulose raw material continuous treatment method comprises the following steps: 1) crushing a lignocellulose raw material, adding a leavening agent, performing briquetting, and performing anaerobic fermentation; 2) performing solid-liquid separation on the fermented lignocellulose raw material, concentrating the liquid part, mixing the concentrated liquid part with a carrier, and performing spray drying to obtain a directional feed additive product, wherein the solid part enters the next working procedure; and 3) performing continuous medium-low temperature continuous spraying treatment on the solid part in the step 2) and alkali, and performing enzymolysis, fermentation and other further treatment on the treated material. The pretreatment method provided by the invention has the advantages of continuous treatment, mild conditions, low energy consumption, good treatment effect and the like, and has a great market application prospect.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of biomass, and in particular relates to a continuous treatment method for lignocellulosic raw materials. Background technique [0002] The main components of crop straw are cellulose, hemicellulose and lignin. No matter what kind of products are produced by using crop straw, the rate of sugar (including glucose and xylose) from fiber raw materials is an important factor affecting the entire process line. Only when lignocellulose is converted into simple sugars such as glucose and xylose through enzymatic hydrolysis, it can be converted into various biological products through fermentation process. Therefore, in the process of converting lignocellulose into energy, saccharification is the most critical step, and it is also the limiting step in the process of lignocellulose into energy. At present, the main ways of cellulose hydrolysis and saccharification are chemical hydrolysis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K10/12A23K20/158A23K20/163A23K10/37A23K10/14
CPCA23K10/12A23K20/158A23K20/163A23K10/37A23K10/14Y02P60/87
Inventor 刘国庆钱晓勇
Owner 咸阳生物制造产业技术研究院
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