Method for preserving crop straw through sulfur dioxide and application

A technology of crop straw and sulfur dioxide, which is applied in the directions of botanical equipment and methods, applications, agricultural machinery and implements, etc., can solve the problems of reducing market competitiveness, complicated pressing operations, and increasing production costs, so as to avoid low mass transfer efficiency, The effect of using a wide range and reducing losses

Inactive Publication Date: 2015-09-23
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this extrusion operation method will inevitably cause a large amount of fermentable sugar loss for sweet sorghum and sugarcane with a water content exceeding 65% (w/w) and a sugar content exceeding 10% (w/w), a

Method used

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  • Method for preserving crop straw through sulfur dioxide and application
  • Method for preserving crop straw through sulfur dioxide and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1 Preservation of whole bar of sweet sorghum

[0033] After harvesting the sweet sorghum, remove the sorghum ears and leaves, cut the root, middle and top of the sorghum stalks respectively to make them into 1-3m long stalks, collect and bundle the cut stalks. The above can be harvested manually, or can be harvested by mechanized combine harvester, leaf stripping and other operations; put the whole bar of sweet sorghum into the silage silo with a height of 2m, a length of 4m and a width of 2m ( figure 1), during which the sweet sorghum stalks are placed upside down on the ground along the longitudinal direction of the silo and piled up. Do not compact during the whole stacking process, and just stack them naturally. During the filling process, 2 g aluminum phosphide tablets (56 wt %) were added per ton of sweet sorghum. The filling rate of the silage silo is 70%. After filling, use agricultural plastic film to cover the materials in the silo, wrap the edge ...

Embodiment 2

[0035] Embodiment 2 Preservation of short stalks of sweet sorghum

[0036] After the sweet sorghum is harvested, the ears and leaves of the sorghum are removed, and the stalks are cut into 3-30 cm long and short rods by manual cutting. The above can be harvested by a mechanized combine harvester and directly cut into short stalks. Put the short stalk sweet sorghum into the high 2m long, 4m wide, 2m silage silo ( figure 1 ), during which the sweet sorghum stalks are piled up vertically, and the whole stacking process should not be compacted, just stack them naturally. During the filling process, 10 g of aluminum phosphide tablets (56 wt%) were added per ton of sweet sorghum. The filling rate of the silage silo is 95%. After filling, use agricultural plastic film to cover the materials in the silo, wrap the edge of the sweet sorghum stack with the plastic film, make the plastic film closely contact with the cement wall and the ground, and fix the plastic film on the surface o...

Embodiment 3

[0038] The preservation of embodiment 3 sweet sorghum pulverized material

[0039] After the sweet sorghum is harvested, the whole plant of sweet sorghum is crushed into particles with a particle size of 2-20 mm by a pulverizer, or directly crushed and harvested in the field by a silage harvester, and the particle size is 2-30 mm.

[0040] The crushed sweet sorghum is put into the silage silo ( figure 1 ), avoid compaction during the whole stacking process, and just stack it naturally. During the filling process, 4 g of aluminum phosphide tablets (56 wt %) were added per ton of sweet sorghum. The filling rate of the silage silo is 70%. After filling, use agricultural plastic film to cover the materials in the silo, wrap the edge of the sweet sorghum stack with the plastic film, make the plastic film closely contact with the cement wall and the ground, and fix the plastic film on the surface of the sweet sorghum stack with sand bags and the like. Insert a 20mm-diameter PVC p...

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Abstract

The invention discloses a method for preserving crop straw through sulfur dioxide and application and belongs to the technical field of biological energy and agriculture. According to the method, after the crop straw or tubers are preprocessed, a simple ensiling bin is filled with the preprocessed crop straw or tubers, meanwhile, aluminum phosphide is added, the simple ensiling bin is sealed through a mulching film after a stack is formed, a gas pipe is inserted after the simple ensiling bin is sealed, mixed gas of sulfur dioxide and air is introduced, and after the gas pipe is pulled out, the simple ensiling bin is sealed for preservation. The method has the advantages that preservation time is long, losses of fermentable saccharides of raw materials are small, and after preservation is performed for six months, 95% of the fermentable saccharides can be effectively preserved.

Description

technical field [0001] The invention relates to a method and application of using sulfur dioxide to preserve crop stalks, and belongs to the field of bio-energy and agricultural technology. Background technique [0002] A similar energy crop to sugarcane, sweet sorghum stalks contain large amounts of fermentable sugars for fuel ethanol production. In addition, the growth cycle of sweet sorghum is only 3 to 4 months (12 to 13 months for sugarcane), and its strong stress resistance is suitable for marginal land, and it has strong tolerance to drought, waterlogging, low temperature, saline-alkali land, etc. Therefore, compared with sugarcane, sweet sorghum has a wider planting range and has great potential as a world energy crop. [0003] The existing sweet sorghum ethanol production process is to carry out liquid fermentation after the sweet sorghum stalk is squeezed. Unlike sugarcane, sweet sorghum has a larger proportion of pith volume in the center of the stalk, which inc...

Claims

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Application Information

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IPC IPC(8): A01F25/00
Inventor 李十中仉磊祖旭齐立松
Owner TSINGHUA UNIV
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