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Control method and control system of utilizing high-concentration organic raw material for biogas fermentation

A technology for organic raw materials and biogas fermentation, applied in specific-purpose bioreactors/fermenters, fermentation, biochemical equipment and methods, etc., can solve problems such as inapplicability to the application environment, increased construction costs, and complicated processes, and achieve Realize the effect of continuous and efficient operation

Inactive Publication Date: 2015-11-11
辽宁省能源研究所有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complex technology used in foreign dry fermentation biogas projects, such as the technology of using biogas for gas mixing and the technology of using large plunger pumps for material feeding, the construction cost of the project has also increased accordingly
Therefore, directly importing advanced technologies from Europe and the United States cannot be applied to the localized application environment of our country.

Method used

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  • Control method and control system of utilizing high-concentration organic raw material for biogas fermentation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: Dry fermentation system control of organic domestic waste materials

[0027] 1. Start the fermentation system. First, use the first feeding device to transport the organic domestic waste with a TS (solid content) of 20% to the stirring and temperature-raising regulating tank, and then open the second feeding device to transport 1 / 3 of the volume of the vertical anaerobic fermentation tank. , so that a large number of methanogens grow.

[0028] 2. Mix and heat up the fermentation raw materials. Turn on the discharge screw conveying device and the discharge distribution device, and return the fermented biogas slurry to the mixing and heating regulating tank according to the ratio of 7 times the quality of the new material, and mix it with the original organic domestic waste in the stirring and heating regulating tank Temperature adjustment, the temperature in the tank reaches 38°C, the steam valve continues to open, and the temperature of the stirring and ...

Embodiment 2

[0032] Example 2: Control of High Concentration Municipal Sludge Dry Fermentation System

[0033] 1. Start the fermentation system. First, use the first feeding device to transport high-concentration municipal sludge with a TS of 22% to the stirring and temperature-raising regulating tank, and then open the second feeding device to transport the sludge of 1 / 3 of the volume of the vertical anaerobic fermentation tank, so that Methanogens grow in abundance.

[0034] 2. Mix and heat up the fermentation raw materials. Turn on the discharge screw conveying device and the discharge distribution device, and return the fermented biogas slurry to the mixing and heating regulating tank according to the ratio of 6 times the quality of the new incoming material, and mix it with the original high-concentration municipal sludge in the stirring and heating regulating tank Carry out mixing and temperature rise adjustment, the temperature in the tank reaches 38°C, the steam valve continues t...

Embodiment 3

[0038] Example 3: Control of pig manure and corn stalk dry fermentation system

[0039] 1. Start the fermentation system. First, use the first feeding device to transport fresh pig manure and corn stalks with a TS of 18% to the stirring and temperature-raising regulating tank, and then open the second feeding device to transport 1 / 4 of the volume of the fermentation tank. grow.

[0040]2. Mix and heat up the fermentation raw materials. Turn on the discharge screw conveying device and the discharge distribution device, and return the fermented biogas slurry to the mixing and heating regulating tank according to the ratio of 5 times the quality of the new material, and mix it with the original fresh pig manure and corn in the stirring and heating regulating tank. The straw is mixed and adjusted to increase temperature, the temperature in the tank reaches 38°C, the steam valve continues to open, and the temperature of the mixing and heating adjustment tank is raised; during the...

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Abstract

The invention belongs to the technical field of renewable energy source development and environment protection, and particularly relates to a control method and a control system of utilizing a high-concentration organic raw material for biogas fermentation. The control method includes that the material enters a stirring temperature rise adjusting tank through a first feeding device, a thermocouple in the stirring temperature rise adjusting tank heats the inside of the same and sends a temperature signal to a PLC (programmable logic controller) of a system, and the PLC controls temperature in the tank to meet a set value according to the signal which is sent; the material after being treated by the stirring temperature rise adjusting tank enters a vertical anaerobic fermentation tank through three discharging valves, and the PLC controls the discharging valves to be on alternately for 2-5min. Fermentation circulating of the high-concentration raw material in the biogas system is realized through the PLC to achieve the objective of stirring the fermentation raw material, potential, of the fermentation raw material, in producing biogas is developed fully, and continuous and efficient running of the high-concentration raw material biogas fermentation system is realized.

Description

Technical field: [0001] The invention belongs to the technical field of renewable energy development and environmental protection, and more specifically relates to a control method and control system for biogas fermentation using high-concentration organic raw materials. Background technique: [0002] In recent years, my country's biogas technology has developed rapidly in the energy and environment industries and achieved certain results. The application of biogas technology has gradually developed from the mode of using poultry and livestock manure as a single fermentation raw material to the technology of using multiple raw materials such as industrial organic waste and domestic organic waste. Under different raw materials, geographical environment and other conditions, the biogas technology adopted is also different. Different from the biogas fermentation process with low total solids (TS) concentration of 5%-12% under conventional conditions, when the total solids (TS)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12Q3/00C12P5/02C12M1/38C12M1/36C12M1/34C12M1/107C12M1/02
CPCY02E50/30Y02P20/59
Inventor 寇巍曲静霞刘洪刚邵正日朱军于美玲邵丽杰王晓明张大雷
Owner 辽宁省能源研究所有限公司
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