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Method for bulking crop straws by using solar energy

A technology for crop straw and puffing treatment, applied in the fields of application, food science, animal feed, etc., can solve the problems of restricting the development of value-added utilization of straw, insufficient biochemical treatment, and inability to obtain biomass raw materials, so as to improve the value of industrial raw materials, The effect of solving the competition between humans and animals for food and good disinfection effect

Inactive Publication Date: 2010-06-16
SUZHOU KELIN TIANJI NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Due to the lack of high-temperature disinfection methods, straws are fermented directly without disinfection after crushing, which is easy to deteriorate during the fermentation process and cause losses
[0004] 2. Since the cellulose and hemicellulose rich in complex sugars are tightly wrapped by lignin, they are directly fermented without lignin degradation treatment, resulting in insufficient biochemical treatment, so that high-value biomass raw materials cannot be obtained
[0005] According to relevant data, every ton of puffed crop straw will consume 300 kg of standard coal, which will greatly increase the utilization cost of straw and cause great pollution, which seriously restricts the development of value-added utilization of crop straw towards industrial raw materials.
[0006] In addition, most areas can only burn crop straws, which not only pollutes the environment but also causes a great waste of resources

Method used

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  • Method for bulking crop straws by using solar energy
  • Method for bulking crop straws by using solar energy
  • Method for bulking crop straws by using solar energy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A. After the crop stalks are removed, air-dry to dry, and then pulverize with a conventional pulverizer in the prior art to obtain straw powder;

[0031] B, straw powder is sent in the conventional soaking container in the prior art, and by the mass ratio of 40% of the total amount of straw, add the ammoniacal liquor and urea aqueous solution that temperature is 20 ℃ in straw powder, this aqueous solution is to use existing The hot water heated by the conventional solar thermal heater in the technology is prepared and soaked for 30 hours, wherein the nitrogen-containing ratio of ammonia water and urea aqueous solution is a mass ratio of 0.3%;

[0032] C. Send the stalk powder soaked in step B into the cooking puffing device, feed the steam generated by the solar steam generator until the pressure is 0.4MPa, the temperature is 135°C, and cooking and sterilizing for 30 minutes;

[0033] D. Open the pressure relief valve at the bottom of the cooking puffing device to insta...

Embodiment 2

[0035] A. After the crop stalks are removed, air-dry to dry, and then pulverize with a conventional pulverizer in the prior art to obtain straw powder;

[0036] B, straw powder is sent in the conventional soaking container in the prior art, and by the mass ratio of 50% of straw total amount, add the ammoniacal liquor and urea aqueous solution that temperature is 30 ℃ in straw powder, this aqueous solution is to use existing The hot water heated by the conventional solar heat heater in the technology is prepared and soaked for 20 hours, wherein the nitrogen-containing ratio of ammonia water and urea aqueous solution is a mass ratio of 3%;

[0037] C. Send the straw powder soaked in step B into the cooking puffing device, and feed the steam generated by the solar steam generator and the compressed hot gas generated by the hot gas pressure compensator until the pressure is 1 MPa and the temperature is 180 ° C. Cook and sterilize 10 minutes;

[0038] D. Open the pressure relief v...

Embodiment 3

[0040] A. After the crop stalks are removed, air-dry to dry, and then pulverize with a conventional pulverizer in the prior art to obtain straw powder;

[0041] B, the stalk powder is sent into the conventional immersion container in the prior art, by the quality of 45% of the stalk total amount, in the above-mentioned stalk powder, adding temperature is 15 ℃, concentration is the sulfuric acid aqueous solution of 1% mass ratio, this aqueous solution Prepared with hot water heated by conventional solar heaters in the prior art, soaked for 30 hours;

[0042] C. Put the straw powder soaked in step B into the cooking puffing device, feed the steam generated by the solar steam generator, and at the same time, fill it with the compressed hot gas generated by the hot gas pressure compensator until the pressure is 0.8 MPa and the temperature is 150°C, cook and sterilize for 20 minutes;

[0043] D. Open the pressure relief valve at the bottom of the cooking puffing device, and instan...

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Abstract

The invention provides a method for bulking crop straws by using solar energy, which comprises the following steps: soaking the crushed crop straws in aqueous solution of ammonia and urea or aqueous solution of sulfuric acid, hydrochloric acid or acetic acid, or heat soaking the crushed crop straws by using hot water which is provided by a solar water heater; and after evaporating and sterilizing the crop straws through steam, performing instant pressure relief on the crop straws to a normal pressure to ensure that high temperature water molecules in the cells of straw powder enter the normal pressure state to evaporate quickly and cell walls are also broken so as to obtain the lignin degraded and bulked straw powder. The whole process of bulking the crop straws consumes the solar energy only, and radically reduces or eliminates dependence of straw bulking production on non-renewable energy resources, namely coal and fuel gas; and the energy can be used locally, the solar energy is fully used to bulk the crop straws, better disinfection effect and lignin degraded effect are achieved, favorable conditions for a subsequent biochemical process such as fermentation are created, and the quality of fermented products is guaranteed.

Description

technical field [0001] The invention relates to a method for processing crop stalks, in particular to a method for processing crop stalks with lignin expansion by using solar energy as heat energy, and belongs to the technical field of crop processing. Background technique [0002] my country is an agricultural country, and a large amount of straw is produced every year in the vast rural areas. Due to the lack of coal, gas and other fuels, it is impossible to provide industrial-grade pressure steam to sterilize the straw at high temperature and degrade the lignin in the straw. In the utilization and treatment of straw, important treatment links such as high-temperature disinfection and lignin degradation have been abandoned, which directly leads to the following problems: [0003] 1. Due to the lack of high-temperature disinfection methods, straws are fermented directly without disinfection after crushing, which is easy to deteriorate during the fermentation process and cause...

Claims

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Application Information

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IPC IPC(8): A23K1/12A23N17/00A23K10/32
Inventor 陈丽华
Owner SUZHOU KELIN TIANJI NEW ENERGY TECH
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