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Straw comprehensive utilization method

A technology of straw and straw, which is applied in the field of deep processing of agricultural and sideline products, can solve the problems of non-reuse of washing liquid, increase of production cost, and non-washing of explosives, so as to improve equipment utilization rate, increase furfural output, and have a good taste Effect

Inactive Publication Date: 2008-03-05
沈仁泰 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the blasting treatment of the straw, the sprayed objects are not washed, or washed but the washing liquid is not reused, and they are treated as pollutants
This method of processing and utilization does not make effective use of resources, but instead increases production costs and causes environmental pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] The straw is rolled, kneaded, and cut into sections by a row of roller rolling devices, and 30% --- 50% of the soft texture and less cellulose-containing leaves and pith (pith) are combined with 50% --- 70% of the tough texture and content. The cellulose-rich stems and straw skins are separated.

[0020] The parts with less cellulose are packaged and directly used as feed or mixed with washing liquid after blasting, and anaerobically fermented as feed. The part containing more cellulose is added to the intermittent or continuous horizontal tube (or vertical) spray explosion device, cooked at 130°C--160°C for 5--15min, at a pressure of 1.6--2.5MPa, Spray explosion under the condition of holding pressure for 1---3min.

[0021] The explosives after spraying are washed with a continuous countercurrent washing device according to the solid-liquid ratio of 1:1.3-2. The washed cellulose is used to make pulp and paper, and to process building decoration materials. Containing...

example 2

[0023] According to Example 1, the corn stalks were rolled and separated, sprayed and washed. The washing liquid containing 8%--15% xylo-oligosaccharide is concentrated to 30%--50% concentration, and then mixed with sulfuric acid, and the sulfuric acid content of the mixed liquid is 4%-5%. The corn cob is mixed with the acid-sugar mixture in a ratio of 1:0.4-0.5. After mixing the acid, the corncobs are put into the hydrolysis kettle and hydrolyzed for 1 hour under the pressure of 10MPa. The aldehyde vapor of the hydrolyzed product is condensed, distilled, cooled, and impurities with low and high boiling points are removed, dehydrated, and furfural is produced.

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PUM

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Abstract

The comprehensive stalk utilizing process relates to deep processing of side agricultural product. The stalk is separated into the part with less cellulose and the part with much cellulose. The part with much cellulose is spouted and washed to obtain cellulose for producing paper pulp and building decorating material. The part with less cellulose is crushed and mixed with the washing liquid containing xylose oligomer, and the mixture is applied in producing fermented feed. The washing liquid containing xylose oligomer may be also used in produce xylose and furfural. The present invention can make best use of crop stalk.

Description

technical field [0001] The invention relates to the field of deep processing of agricultural by-products, in particular to a method for deep processing of straw. Background technique [0002] Straw is an important resource for renewable and sustainable development. Different parts of straw, such as stems, straw bark, leaves, and pith (pith), contain substances such as cellulose, hemicellulose, lignin, and protein. Different substances should produce different products to make the best use of them. [0003] At present, most straw processing adopts mixed utilization, that is, the stalk, straw skin, leaves, and pith (pith) of the straw are not separated and used in combination. After straw blasting treatment, the blasting objects are not washed, or washed but the washing liquid is not reused, and they are treated as pollutants. This method of processing and utilization does not make effective use of resources, but instead increases production costs and causes environmental p...

Claims

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Application Information

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IPC IPC(8): D21B1/04D21B1/36D21C9/02A23K1/12A23K10/32
CPCY02P60/87
Inventor 沈仁泰刘一清任敏
Owner 沈仁泰
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