Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for improving gas yield of biogas fermentation

A biogas fermentation and gas production technology, applied in the direction of fermentation, waste fuel, etc., can solve the problems of human and financial loss, waste of fermentation resources, large biogas production, etc., and achieve the effects of short fermentation cycle, promotion of decomposition, and high reactivity

Active Publication Date: 2018-02-06
JIANGSU ZHONGKE HEAVY IND CO LTD
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the actual popularization and application of biogas, the gas production in the fermentation process is low, and a large biogas production cannot be obtained during fermentation, which undoubtedly leads to a waste of fermentation resources and a loss of human and financial resources.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for improving gas yield of biogas fermentation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for improving the gas yield of biogas fermentation, comprising the following steps:

[0033] (1) Cut and pulverize the dry straw to make straw powder, add water to mix, then transfer to an ultrasonic crusher, and perform intermittent crushing to obtain straw slag;

[0034] (2) Mix the straw residue and 0.02 times the weight of calcium peroxide evenly and transfer it to the reactor, then add water 8 times the weight of the straw residue, stir well, seal the reactor, and treat it at 40kPa and 130°C for 20 minutes. Cool naturally to room temperature to obtain the hydrothermally pretreated straw slurry for subsequent use;

[0035] (3) Preparation of inoculum: Mix activated sludge and human and animal manure evenly according to the mass ratio of 1:0.3, cover with plastic film, stack for 2 days, and then use 60 Co gamma-ray irradiation to obtain the inoculum;

[0036] (4) Add the inoculum obtained in step (4) to the straw slurry obtained in step (2), then add magne...

Embodiment 2

[0044] A method for improving the gas yield of biogas fermentation, comprising the following steps:

[0045] (1) Cut and pulverize the dry straw to make straw powder, add water to mix, then transfer to an ultrasonic crusher, and perform intermittent crushing to obtain straw slag;

[0046] (2) Mix the straw residue with 0.03 times the weight of calcium peroxide evenly and transfer it to the reactor, then add water 10 times the weight of the straw residue, stir well, seal the reactor, and treat it at 60kPa and 150°C for 30 minutes. Cool naturally to room temperature to obtain the hydrothermally pretreated straw slurry for subsequent use;

[0047] (3) Preparation of inoculum: Mix activated sludge with human and animal manure at a mass ratio of 1: 0.4, cover with plastic film, stack for 3 days, and then use 60 Co gamma-ray irradiation to obtain the inoculum;

[0048] (4) Add the inoculum obtained in step (4) to the straw slurry obtained in step (2), then add magnesium-based oliv...

Embodiment 3

[0056] A method for improving the gas yield of biogas fermentation, comprising the following steps:

[0057] (1) Cut and pulverize the dry straw to make straw powder, add water to mix, then transfer to an ultrasonic crusher, and perform intermittent crushing to obtain straw slag;

[0058] (2) Mix the straw residue with 0.02 times the weight of calcium peroxide evenly and transfer it to the reactor, then add water 10 times the weight of the straw residue, stir well, seal the reactor, and treat it at 40kPa and 150°C for 20 minutes. Cool naturally to room temperature to obtain the hydrothermally pretreated straw slurry for subsequent use;

[0059] (3) Preparation of inoculum: Mix activated sludge with human and animal manure according to the mass ratio of 1: 0.4, cover with plastic film, stack retting for 2 days, and then use 60 Co gamma-ray irradiation to obtain the inoculum;

[0060] (4) Add the inoculum obtained in step (4) to the straw slurry obtained in step (2), then add ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle size (mesh)aaaaaaaaaa
particle diameteraaaaaaaaaa
particle size (mesh)aaaaaaaaaa
Login to View More

Abstract

The invention provides a method for improving the gas yield of biogas fermentation. The method comprises the following steps: mixing straw pulp with an inoculant, magnesium-based olivine powder and mullite powder, and carrying out anaerobic fermentation to generate biogas, wherein a fermentation period is short and the gas yield of the biogas fermentation can be effectively improved. The straw pulp is obtained through ultrasonic crushing and hydrothermal treatment; the contact area between straw components and microorganisms is enlarged and the anaerobic fermentation efficiency is improved; the inoculant is obtained by heaping and retting active sludge and animal and human excrement and then irradiating through 60Co gamma-rays, and is used for promoting the degradation of organic matters;the magnesium-based olivine powder and the mullite powder contain rich metal elements including magnesium, aluminum and the like and can realize a catalytic action; the improvement of the fermentationefficiency is facilitated and the fermentation period is shortened.

Description

technical field [0001] The invention relates to the technical field of biogas fermentation, in particular to a method for increasing the gas production of biogas fermentation. Background technique [0002] With the development of society and the continuous improvement of people's living standards, energy crisis and environmental pollution have become important factors affecting the social progress of our country; using biogas microorganisms to ferment and decompose organic matter under anaerobic conditions to produce a flammable gas-biogas, which has already It has become one of the important means to alleviate the resource and energy crisis faced by our country in recent years; [0003] At present, rural biogas construction has become an important part of my country's energy development strategy. Biogas is one of the four major renewable energy sources that my country vigorously develops; speed up the development of rural clean energy, continue to increase investment in rur...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C12P5/02
CPCC12P5/023C12P2201/00C12P2203/00Y02E50/30
Inventor 李德民
Owner JIANGSU ZHONGKE HEAVY IND CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com