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Steam explosion straw material collection and energy utilization technology

A technology of steam-exploding straw and materials, which is applied in the field of steam-explosion pretreatment of fiber ethanol production process, can solve problems such as unproposed process methods, and achieve the effect of simple operation, good effect and reasonable process design

Inactive Publication Date: 2013-04-17
河南天冠纤维乙醇有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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Method used

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  • Steam explosion straw material collection and energy utilization technology

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Effect test

specific Embodiment 2

[0035] Such as figure 1 Shown, the present invention adopts following technical scheme to realize above-mentioned purpose, and its concrete steps are as follows:

[0036] (1) The straw crushed to 40-80 mm is sent into the blasting container 1 by the loader;

[0037] (2) High-pressure steam with a pressure of 1.2-4.0 MPa is introduced into the blasting container 1;

[0038] (3) Keep the pressure on the blasting vessel 1 for 10-120 minutes;

[0039] (4) Open the blasting container 1 to eject the material to realize the separation of material and steam;

[0040] (5) Enter the steam obtained in step (4) into the decompression chamber 2, and the steam containing organic molecules is discharged from the top of the decompression chamber 2 and enters the condenser 3;

[0041] (6) The steam obtained in step (5) passes through the condenser 3 and becomes liquid, and the liquid is sent to the sewage treatment process, and the tail gas generated enters the absorption tower 4;

[...

specific Embodiment 3

[0046] Such as figure 1 Shown, the present invention adopts following technical scheme to realize above-mentioned purpose, and its concrete steps are as follows:

[0047] (1) The straw that has been crushed to 20-100 mm is sent into the blasting container 1 by the loader;

[0048] (2) High-pressure steam with a pressure of 2.2-3.0 MPa is introduced into the blasting container 1;

[0049] (3) Keep the pressure on the blasting vessel 1 for 60-70 minutes;

[0050] (4) Open the blasting container 1 to eject the material to realize the separation of material and steam;

[0051] (5) Enter the steam obtained in step (4) into the decompression chamber 2, and the steam containing organic molecules is discharged from the top of the decompression chamber 2 and enters the condenser 3;

[0052] (6) The steam obtained in step (5) passes through the condenser 3 and becomes liquid, and the liquid is sent to the sewage treatment process, and the tail gas generated enters the absorption...

specific Embodiment 4

[0057] Such as figure 1Shown, the present invention adopts following technical scheme to realize above-mentioned purpose, and its concrete steps are as follows:

[0058] (1) The straw that has been crushed to 40-80 mm is sent to the blasting container 1 through the belt conveyor 5;

[0059] (2) High-pressure steam with a pressure of 1.2-4.0 MPa is introduced into the blasting container 1;

[0060] (3) Keep the pressure on the blasting vessel 1 for 40-90 minutes;

[0061] (4) Open the blasting container 1 to eject the material to realize the separation of material and steam;

[0062] (5) Enter the steam obtained in step (4) into the decompression chamber 2, and the steam containing organic molecules is discharged from the top of the decompression chamber 2 and enters the condenser 3;

[0063] (6) The steam obtained in step (5) passes through the condenser 3 and becomes liquid, and the liquid is sent to the sewage treatment process, and the tail gas generated enters the ...

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Abstract

The invention belongs to the technical field of cellulosic ethanol production process steam explosion pretreatment, and discloses a steam explosion straw material collection and energy utilization technology, comprising the concrete steps of: (1) feeding the crushed straw into a blasting vessel by mechanical means; (2) feeding high pressure steam with a pressure of 1.2-4.0 MPa into the blasting vessel; (3) keeping pressure for the blasting vessel for 10-120 min; (4) opening the blasting vessel to eject the material to achieve separation of the material and the steam; (5) feeding the steam from the step (4) into a decompression chamber, and discharging organic molecule containing steam from the top of the decompression chamber and into the a condenser; (6) feeding a liquid formed by the steam of the step (5) through the condenser to the wastewater treatment process, and feeding the exhaust gas into an absorption tower for subsequent exhaust absorption. The technology enables steam explosion byproducts to be scientifically collected and used, makes fully use of exhaust heat, and is easy to promote and use.

Description

technical field [0001] The invention belongs to the technical field of steam explosion pretreatment of fiber ethanol production technology, and in particular relates to a collection and energy comprehensive utilization technology of steam explosion straw materials. Background technique [0002] In the production process of cellulosic ethanol, the straw cellulosic raw material needs to be pretreated before it can be further processed into ethanol. Steam explosion pretreatment has the advantages of simple treatment process and low energy consumption. During the steam explosion process, many organic substances such as formic acid, acetic acid, and furfural are produced due to high temperature, and some substances exist in the residual steam after the explosion. If the residual steam after blasting is discharged directly, problems of environmental pollution and energy waste will arise. How to solve the environmental pollution problems existing in the pretreatment process of st...

Claims

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Application Information

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IPC IPC(8): C12P7/10
CPCY02E50/10
Inventor 马晓建阎德冉王林风米锡耿王铎
Owner 河南天冠纤维乙醇有限公司
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