Straw wall-breaking pulping machine and straw wall-breaking pulping method

A technology of pulping machine and straw, which is applied in fermentation, gas production bioreactor and other directions, can solve the problems of labor and time-consuming, pollute the environment, destroy straw, etc., and achieve the effects of increasing biogas production, significant economic benefits, and improving production efficiency.

Pending Publication Date: 2019-06-11
QINGDAO HUIJUN ENVIRONMENTAL ENERGY ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current pretreatment method is generally to crush the straw first, and then perform long-term aerobic stack retting. This method not only occupies a large area of ​​land, is labor-intensive, pollutes the environment, and fermentation is greatly affected by the outside temperature. The aerobic stack retting fermentation effect is very poor, the efficiency is low, and the stack retting method can not effectively destroy the cell wall of the straw, so the organic matter in the straw cells cannot be digested by the flora. Affect the operation of the biogas digester

Method used

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Effect test

Embodiment 1

[0029] The invention provides a straw wall breaking pulper, see Figure 1-2 , including a barrel 1 and a number of stirring devices 8 uniformly arranged inside the barrel body, a steam inlet 9 and a feed port 10 are arranged on the top of the barrel body 1, and a slurry outlet 11 is arranged at the lower end of the barrel body 1;

[0030] The stirring device 8 comprises a stirring shaft 5 and the stirring blades 4 evenly distributed on the stirring shaft 5;

[0031] Stirring blade 4 comprises the connecting arm 12 that is fixedly connected with stirring shaft 5 and the stirring sheet 13 that is arranged on connecting arm 12 ends; The length of stirring sheet 13 is greater than the width of connecting arm 12.

[0032] In the present invention, the raw materials are transported into the barrel, and through the blasting effect of the steam, the pulping of the straw wall is quickly realized; at the same time, the raw materials in the system are always in a fully closed state, whic...

Embodiment 2

[0039] A method for straw wall breaking pulping, using the above-mentioned straw wall breaking pulping machine; the specific steps are:

[0040] (1) Mix the crushed dry straw and water evenly in a weight ratio of 1:1.5, wherein the length of the dry straw is 20-30mm;

[0041] (2) Close the stop valve and the discharge valve, open the feed valve, put the prepared raw materials in step (1) into the barrel, the filling amount is 70% of the total volume of the barrel, and start the rotary motor at the same time to feed the raw materials Stir, the stirring speed is 20rpm / min;

[0042] (3) Open the shut-off valve and pass in the superheated steam, the temperature of the superheated steam is 183°C-187°C until the pressure reaches 1.0MPa, then heat and hold the pressure for 10 minutes;

[0043] (4) Quickly open the discharge valve, and the material in the barrel becomes slurry, which is sprayed into the atmospheric pressure release tank.

Embodiment 3

[0045] A method for straw wall breaking pulping, using the above-mentioned straw wall breaking pulping machine; the specific steps are:

[0046] (1) Mix the crushed dry straw and water evenly in a weight ratio of 1:2, wherein the length of the dry straw is 20-30mm;

[0047] (2) Close the shut-off valve and the discharge valve, open the feed valve, put the prepared raw materials in step (1) into the barrel, the filling amount is 80% of the total volume of the barrel, and start the rotary motor at the same time to feed the raw materials Stir, the stirring speed is 50rpm / min;

[0048] (3) Open the shut-off valve and pass in the superheated steam, the temperature of the superheated steam is 183°C-187°C until the pressure reaches 1.1MPa, then heat and hold the pressure for 7 minutes;

[0049] (4) Quickly open the discharge valve, and the material in the barrel becomes slurry, which is sprayed into the atmospheric pressure release tank.

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Abstract

The invention discloses a straw wall-breaking pulping machine and a straw wall-breaking pulping method, and belongs to the technical field of biogas fermentation. The straw wall breaking pulping machine comprises a barrel body and a plurality of stirring devices evenly arranged in the barrel body; a steam inlet and a feeding port are formed in the top of the barrel body, and a pulp outlet is formed in the lower end of the barrel body; the stirring device comprises a stirring shaft and stirring blades uniformly distributed on the stirring shaft; each stirring blade comprises a connecting arm fixedly connected with the stirring shaft and a stirring blade arranged at the tail end of the connecting arm; and the length of the stirring blade is greater than the width of the connecting arm. The simple straw wall-breaking pulping machine provided by the invention can realize efficient wall breaking of straws; and meanwhile, the slurry with relatively high biogas yield is obtained through specific process conditions, so that the economic benefit is remarkable.

Description

technical field [0001] The invention relates to the technical field of biogas fermentation, in particular to a straw wall-breaking pulping machine and a method for straw wall-breaking pulping. Background technique [0002] my country is rich in crop straw resources, with hundreds of millions of tons per year. Except for a small amount that is processed into silage, bioethanol, paper, etc., most of them are discarded and incinerated, which is not only a waste of resources, but also causes environmental pollution. . How to use straw (especially dry straw) to produce biogas and turn dry straw into treasure has always been the direction of efforts of experts in the field of biogas. Because the straw has a high lignocellulose content and is not easily digested by anaerobic flora, the straw must be pretreated before entering the biogas digester, otherwise the digestibility of anaerobic fermentation is low, the speed is slow, and the gas production is small. The current pretreatme...

Claims

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Application Information

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IPC IPC(8): C12M1/107C12P5/02
Inventor 陈伯强邢帆
Owner QINGDAO HUIJUN ENVIRONMENTAL ENERGY ENG
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