Method for producing fuel ethanol based on irradiation pre-treated straw

A technology of fuel ethanol and pretreatment, which is applied in the directions of biofuel and fermentation to achieve the effect of increasing the processing capacity, improving the processing efficiency and improving the efficiency.

Active Publication Date: 2017-02-15
湖南省核农学与航天育种研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies and defects mentioned in the above background technology, and provide a straw production method based on irradiation pretreatment that can make full use of waste resources, reduce agricultural pollution, alleviate energy problems, and have excellent product quality. fuel ethanol method

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  • Method for producing fuel ethanol based on irradiation pre-treated straw
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Embodiment 1

[0039] a kind of like figure 1The method for producing fuel ethanol based on irradiation pretreatment stalks of the present invention comprises the following steps:

[0040] 1. Raw material preparation: After collecting the naturally dried rice straws in the farmland, they are bundled into straw blocks with the same specifications by the straw forming system (for example, pressed by a hydraulic baler). The volume size of the straw blocks is 900mm×500mm ×550mm (length × width × height), density is 500kg / m 3 . The maximum binding force of the straw forming system is 1000-2000N, and the power is 5-10kW.

[0041] 2. γ-ray irradiation treatment: using 60 Co-γ ray irradiates the straw block once, the source capacity of the irradiation box is 6 million curies, the irradiation dose is 400 kGy, the dose rate is 10 kGy / h, and the radiation source intensity is 2.22×10 16 Bq (7.4×10 15 ~2.22×10 16 Bq can be). During one irradiation treatment, the straw block is divided into upper a...

Embodiment 2

[0057] a kind of like figure 1 The method for producing fuel ethanol based on irradiation pretreatment stalks of the present invention comprises the following steps:

[0058] 1. Raw material preparation: After collecting the naturally dried corn stalks in the farmland, they are bundled and formed into straw blocks with consistent specifications by a straw forming system (for example, pressed by a hydraulic baler). The volume size of the straw blocks is 1000mm×600mm ×600mm (length×width×height), density is 400kg / m 3 . The maximum binding force of the straw forming system is 1000-2000N, and the power is 5-10kW.

[0059] 2. γ-ray irradiation treatment: using 60 Co-γ ray was used to irradiate the straw block once. The source capacity of the irradiation box was 8 million curies, the irradiation dose was 300 kGy, the dose rate was 15 kGy / h, and the intensity of the radioactive source was 2.22×10 16 Bq. During one irradiation treatment, the straw block is divided into upper and ...

Embodiment 3

[0072] a kind of like figure 1 The method for producing fuel ethanol based on irradiation pretreatment stalks of the present invention comprises the following steps:

[0073] 1. Raw material preparation: After collecting the rapeseed straws that have been naturally dried in the farmland, they are bundled and formed into straw blocks with consistent specifications by a straw forming system (for example, pressed by a hydraulic baler). The volume size of the straw blocks is 1000mm×600mm ×550mm (length × width × height), density is 350kg / m 3 . The maximum binding force of the straw forming system is 1000-2000N, and the power is 5-10kW.

[0074] 2. γ-ray irradiation treatment: using 60 Co-γ ray irradiates the straw block once, the source capacity of the irradiation box is 10 million curies, the irradiation dose is 200 kGy, the dose rate is 15 kGy / h, and the intensity of the radioactive source is 2.22×10 16 Bq. During one irradiation treatment, the straw block is divided into upp...

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Abstract

The invention discloses a method for producing fuel ethanol based on irradiation pre-treated straw. The method includes steps of bundling and molding straws to be straw blocks; then filling to an irradiation box to perform 60 Co-gama irradiation pretreatment; smashing the pretreated straw to be straw powder; performing a secondary irradiation on straw powder by an electronic beam; placing the straw powder after the secondary irradiation treatment in a reactor to perform enzymolysis; adjusting pH value of the reaction system after enzymolysis; accessing the yeast to ferment and obtaining the ethanol-containing fermented mash; adding the fermented mash to a tower kettle storage tank, rectifying and obtaining ethanol-water co-boiling composition; after absorbing the ethanol-water co-boiling composition through a molecular sieve and obtaining the fuel ethanol. The method can fully use waste resources, lighten agricultural pollution, and ease energy problems; besides, the product quality is excellent.

Description

technical field [0001] The invention belongs to the field of straw utilization, in particular to a method for producing fuel ethanol from straw. Background technique [0002] my country is a country with a serious shortage of energy but a large demand. The energy materials currently used are mainly oil, coal, and natural gas. Not only are these fossil energy reserves limited, but their extensive use has also brought serious environmental problems. It is imperative to develop clean and renewable energy. Biomass energy is a kind of abundant renewable energy. If it can be used rationally, it will greatly reduce the excessive dependence on fossil energy, and it will play a pivotal role in building a new system for my country's future energy security. [0003] Crop straw is an important part of biomass energy, which contains huge energy. my country's crop straw resources are very rich, with a total output of more than 700 million tons of straw, but its distribution is wide, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/10C12P19/14
CPCC12P7/10C12P19/14C12P2203/00Y02E50/10
Inventor 王克勤陈亮武小芬齐慧郭栋豪邓明胡蝶王振
Owner 湖南省核农学与航天育种研究所
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