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Method for comprehensively utilizing sweet sorghum straws

A technology for sweet sorghum straw and sorghum straw, which is applied in the field of comprehensive utilization of sweet sorghum straw, can solve problems such as inability to meet market demands, and achieve the effects of being environmentally friendly, intensive, and efficient, improving economic benefits, and increasing ethanol yield.

Active Publication Date: 2014-10-22
YANCHENG BEIOU BIOCHEM ENERGY TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to limited land resources, traditional tannin extraction methods cannot meet market demand
In recent years, pine needles and some wild plants have been used for extraction, but they still cannot meet market demand

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Preparation of straw slurry: after the fresh sweet sorghum stalks collected are defoliated, they are sent into a pulverizer to be crushed into shredded sweet sorghum stalks, and 1000 kilograms of straws are taken, and its moisture content is determined to be 75%, namely The dry matter content is 25%; the total soluble sugar content in the dry matter is 48%, about 120 kg; other slag materials account for 52%, about 130 kg; then the sweet sorghum stalks are sent to the refiner and pumped into 1100 kg of propane Ether, ground into 100 mesh sweet sorghum straw mixed slurry;

[0034] (2) Preparation of tannin by extraction: Put the mixed slurry of sweet sorghum straw into the fractionation tower, stir for 20 minutes, and then let it stand for 60 minutes. Reclaim the extractant to obtain 2.3 kilograms of crude tannins;

[0035] (3) Squeeze sugar juice: Squeeze the slurry in the lower layer of the fractionation tower in step (2), squeeze out 740 kg of sugar juice of the s...

Embodiment 2

[0044] (1) Preparation of straw slurry: After removing the leaves of the collected fresh sweet sorghum stalks, send them into a pulverizer to crush them into shredded sweet sorghum straws; take 1000 kg of sweet sorghum straws and send them to a refiner Grinding into 100 mesh sweet sorghum straw slurry;

[0045] (2) Preparation of tannin by extraction: put the sweet sorghum straw slurry into a fractionation tower, add 900L of allyl ethyl ether as an extractant, stir for 10 minutes, and then let it stand for 30 minutes. After the extract and the slurry are fully layered, The extract on the top of the fractionation tank is pumped into the still, and the extractant is reclaimed to obtain 2.1 kilograms of crude tannins;

[0046] (3) Squeeze sugar juice: Squeeze the slurry in the lower layer of the fractionation tower in step (2), squeeze out 735 kilograms of sugar juice and 265 kilograms of sweet sorghum stalk slurry slag of the sweet sorghum stalk slurry, and then squeeze the swee...

Embodiment 3

[0056] (1) Preparation of shredded straw: after the collected fresh sweet sorghum stalks are defoliated, they are sent into a pulverizer to be pulverized into shredded sweet sorghum straw;

[0057](2) Preparation of tannin by extraction: put 1000 kg of sweet sorghum stalks and 700 L of methyl butyl ether as an extractant into the refiner, and ensure that the sweet sorghum stalks and extractant are added evenly and synchronously , ground into 100-mesh sweet sorghum straw slurry;

[0058] Put the sweet sorghum straw slurry into the fractionation tower, stir for 15 minutes, and then let it stand for 45 minutes. After the extract and the slurry are fully layered, the extract from the upper part of the fractionation tank is pumped into the distiller, and the extractant is recovered to obtain crude tannin 2.3 kilogram;

[0059] (3) Squeeze sugar juice: Squeeze the slurry in the lower layer of the fractionation tower in step (2), squeeze out 740 kg of sugar juice of the sweet sorghu...

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PUM

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Abstract

The invention provides a method for comprehensively utilizing sweet sorghum straws. The method comprises the following steps: removing leaves from the sweet sorghum straws, crushing the leaf-removed sweet sorghum straws, grinding to form a slurry, and adding an extractant to obtain tannin; and preparing pectin, ethanol, cellulose and lignin in order to fully use the sweet sorghum straws. The method realizes the friendly processing environment, intensive processing and high processing efficiency of the sweet sorghum straws, fully utilizes useful substances in the sweet sorghum straws, increases the processing added values of the sweet sorghum straws, improves the resource utilization efficiency, realizes the zero emission of pollutants in the production process, is in favor of improving the sweet sorghum planting enthusiasm of peasant household, and powerfully promotes the raw material base construction of sweet sorghum.

Description

technical field [0001] The invention belongs to the technical field of biomass materials and energy, and in particular relates to a method for comprehensive utilization of sweet sorghum stalks. Background technique [0002] Sweet sorghum is one of the crops with the highest biological yield. It has a long history of cultivation in my country and is widely planted in the south and north. The dry matter of fresh sweet sorghum stalks contains about 20-22% cellulose, 10-12% lignin, 16-19% hemicellulose, 10-13% pectin, 3-4% crude protein, and 35-35% total sugar content. 41%, tannin 0.4-2.5%, crude fat, minerals, etc. 3-5%. [0003] At present, sweet sorghum stalks are mainly used to prepare ethanol. According to the economic calculation of the pilot test, the cost is relatively high and the benefit is relatively low, so it has not been able to be popularized and applied industrially. The current comprehensive utilization of sweet sorghum stalks is at most limited to the combine...

Claims

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Application Information

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IPC IPC(8): C12P7/08C12P19/04C07H13/08C07H1/08C08B37/06C08H7/00C12R1/865
Inventor 张永北周汝琴何冲霄商中水严国红郑海东孙明法姚立生罗靖赖世岩张爱诚
Owner YANCHENG BEIOU BIOCHEM ENERGY TECH
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