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Intelligent control type two-phase anaerobic biofilm biogas fermentation system and process

An anaerobic biofilm and intelligent control technology is applied in the field of intelligent control of two-phase anaerobic biofilm biogas fermentation systems and processes, which can solve the problems of unstable yield and low biogas yield, and achieve reasonable structural design and process operation. Simple and effective in improving conversion efficiency and operational stability

Inactive Publication Date: 2017-05-31
LIAONING UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide an intelligently controlled two-phase anaerobic biofilm biogas fermentation system and process that solves the problems of low biogas yield and unstable yield in the low temperature state, with reasonable structure design and simple operation, based on biophase Separation technology, accurate control of operating parameters such as organic load, temperature, mechanical stirring and biogas slurry return load of the system in and out of the system, to achieve low-temperature and high-efficiency biogas preparation from organic waste

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  • Intelligent control type two-phase anaerobic biofilm biogas fermentation system and process
  • Intelligent control type two-phase anaerobic biofilm biogas fermentation system and process

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Embodiment 1

[0024] Such as figure 1 As shown, the intelligent control two-phase anaerobic biofilm biogas fermentation system consists of a hydrolytic acidification phase fermentation device 1, a methanogenic phase fermentation device 28, and an acidification device connected between the hydrolytic acidification phase fermentation device 1 and the methanogenic phase fermentation device 28. Material storage solid-liquid separation device 17 and PLC intelligent controller 14 are composed. The volume ratio of the hydrolysis acidification phase fermentation device 1 , the acidified material storage solid-liquid separation device 17 and the methanogenic phase fermentation device 28 is 4:1:1.

[0025]Wherein, the acidified material storage solid-liquid separation device 17 is provided with an acidified liquid feed port 18 at the lower part, an acidified liquid discharge port 23 at the upper part, a gas outlet 20 at the top, and a residue discharge port 19 at the bottom. A connection pipeline is...

Embodiment 2

[0033] In the intelligently controlled two-phase anaerobic biofilm biogas fermentation system, the volume ratio of the hydrolysis acidification phase fermentation device 1, the acidified material storage solid-liquid separation device 17 and the methanogenic phase fermentation device 28 is 4:1:1. The diameter-to-height ratio of the methanogenic phase fermentation device 28 is 1:8, and the detachable carrier supporting device 32 in the methanogenic phase fermentation device 28 is located at 2 / 3 of the top of the methanogenic phase fermentation device 28, The height of the supported carrier is 1 / 3 of the height of the methanogenic phase fermentation device 28 . Others are the same as embodiment 1.

[0034] The intelligent control of the two-phase anaerobic biofilm biogas fermentation process using the above system includes the following steps:

[0035] Step 1, first separate the sand particles mixed in the pig manure and sewage sludge, then mix with the crushed straw, and final...

Embodiment 3

[0039] In the intelligently controlled two-phase anaerobic biofilm biogas fermentation system, the volume ratio of the hydrolysis acidification phase fermentation device 1, the acidified material storage solid-liquid separation device 17 and the methanogenic phase fermentation device 28 is 3:1:1. The diameter-to-height ratio of the methanogenic phase fermentation device 28 is 1:6, the diameter of the reflux disperser 31 is 4 / 5 of the diameter of the methanogenic phase fermentation device 28, and the detachable carrier supporting device 32 is located at a distance from the methanogenic phase At 2 / 3 of the top of the fermentation device 28, the height of the supporting carrier is 1 / 4 of the height of the fermentation device 28 in the methanogenic phase. Others are the same as embodiment 1.

[0040] The intelligent control of the two-phase anaerobic biofilm biogas fermentation process using the above system includes the following steps:

[0041] Step 1. First separate the sand p...

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Abstract

The invention relates to an intelligent control type two-phase anaerobic biofilm biogas fermentation system and process. The intelligent control type two-phase anaerobic biofilm biogas fermentation system comprises a hydrolytic acidification phase fermentation device, a methane production phase fermentation device and an intelligent PLC (Programmable Logic Controller), and is characterized in that an acidified material storage and solid-liquid separation device is arranged between the hydrolytic acidification phase fermentation device and the methane production phase fermentation device; an acidified liquid feeding hole is formed in the lower part of the acidified material storage and solid-liquid separation device, an acidified liquid discharging hole is formed in the upper part and a residue discharging hole is formed in the bottom; an acidified liquid feeding pump is arranged between the acidified liquid feeding hole and a discharging hole of the hydrolytic acidification phase fermentation device; a residue reflowing pump is arranged between the residue discharging hole and a feeding hole of the hydrolytic acidification phase fermentation device; and a methane production phase feeding pump is arranged between the acidified liquid discharging hole and a feeding hole ofmethane production phase fermentation device. Based on a biological phase separation technology, organic loads of feeding and discharging, temperature, mechanical stirring, biogas liquid reflowing load and the like of the system are accurately controlled; and the preparation of low-temperature and high-effect biogas by organic wastes is realized.

Description

technical field [0001] The invention relates to the technical field of anaerobic fermentation of organic waste to produce methane, in particular to an intelligently controlled two-phase anaerobic biofilm biogas fermentation system and process. Background technique [0002] With the depletion of primary petrochemical energy, the development and utilization of renewable energy has become a research hotspot around the world. Using anaerobic fermentation technology to convert various organic wastes, such as livestock and poultry manure, domestic garbage, sewage sludge and agricultural product processing waste, into biogas methane can not only improve the ecological environment, but also play a role in national energy security and supplementary energy supply. Significance. The development and application of biogas energy in my country has gone through the development stages of household mode, small and medium-sized biogas projects and large-scale biogas projects, and achieved go...

Claims

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Application Information

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IPC IPC(8): C12M1/36C12M1/34C12M1/107C12Q3/00C12P5/02
CPCC12M21/04C12M23/36C12M23/58C12M27/02C12M41/12C12M41/26C12M41/42C12M41/44C12M41/48C12P5/023C12Q3/00Y02E50/30
Inventor 赵光冀丽爽郭星孙婷
Owner LIAONING UNIVERSITY OF TECHNOLOGY
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