Method for producing biogas from vinasse by high-temperature anaerobic fermentation

A technology for high-temperature anaerobic fermentation and biogas production, which can be used in fermentation, waste fuel, biological sludge treatment, etc.

Inactive Publication Date: 2015-11-11
SHANDONG BAOLI BIOMASS ENERGY
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  • Abstract
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Problems solved by technology

[0005] The present invention aims at the problems that distiller's grains produced after bioethanol production using sweet sorghum stalks, cassava, sugarcane or grain as raw materials cannot be processed and energy resources are in short supply, and provides a method for producing biogas by high-temperature fermentation using distiller's grains as raw materials

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  • Method for producing biogas from vinasse by high-temperature anaerobic fermentation
  • Method for producing biogas from vinasse by high-temperature anaerobic fermentation
  • Method for producing biogas from vinasse by high-temperature anaerobic fermentation

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specific Embodiment approach 1

[0039] Specific implementation mode 1: as attached figure 1 , first accurately weigh 300g of distiller's grains, transfer it to a 2000ml conical flask, then add 245ml of inoculum, add water to the 1500ml of the conical flask, stir evenly, adjust the pH to 8.02 with 1mol / L NaOH solution, and put a plug on it Use a glue gun to seal the connection between the rubber stopper and the Erlenmeyer flask, connect the air guide pipe to the gas collection device, and place the Erlenmeyer flask in a shaker at 55°C, with the shaker speed set at 120rpm , set to shake 3 minutes per hour. Do three sets of repetitions. A blank test was performed with a fermentation broth containing only the inoculum and water. The amount of biogas produced is recorded by drainage gas collection method every day, the gas composition of biogas is measured by gas chromatograph, and the gas collection system is returned to water. After 44 days of fermentation, the experiment was completed and the data was anal...

specific Embodiment approach 2

[0040] Specific embodiment 2: Put distiller's grains in shakers at normal temperature of 25°C and medium temperature of 38°C to carry out fermentation and gas production experiments. The gas production effect at high temperature is obviously better than that at medium temperature and normal temperature.

specific Embodiment approach 3

[0041] Specific embodiment 3: The TS concentration of distiller's grains is respectively set as 1%, 2%, 2.5%, 3%, 3.5%, 4%, and 5%, and then anaerobic fermentation gas production experiment is carried out at high temperature. Other experimental steps are as follows: As shown in Embodiment 1, the result is as follows Figure 4 It can be seen from the results that when the TS concentration of distiller's grains is 2%~3.5%, the gas production effect is better.

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Abstract

The invention relates to biomass biogas fermentation, particularly a method for producing biogas from vinasse by high-temperature anaerobic fermentation, which comprises the following steps: (1) adding vinasse and inoculum into a fermentation bottle, and mixing; (2) adding water and an alkaline matter into the fermentation bottle to regulate the pH value; (3) after regulating the pH value, putting the fermentation bottle in a high-temperature shaking table, and carrying out fermentation; (4) collecting biogas by a drainage gas collection process in the fermentation process; (5) recording daily biogas yield and accumulative biogas yield, and determining the daily biogas composition by gas phase chromatography; and (6) after the fermentation finishes, calculating the biogas yield per unit volume and the biogas productivity per unit TS in the process of producing biogas from vinasse by high-temperature fermentation. By using the vinasse to produce the biogas by high-temperature anaerobic fermentation, the method has the advantages of high start speed, high gas production rate, energy saving and environment friendliness, and has very high popularization and use value.

Description

technical field [0001] The invention relates to biomass biogas fermentation, in particular to a method for producing biogas by high-temperature anaerobic fermentation using distiller's grains as a raw material. Background technique [0002] In the face of the depletion of fossil energy and the environmental degradation caused by the carbon dioxide emitted by the combustion of fossil fuels, finding new alternative energy has become a common goal of the world. At present, my country is short of energy resources, the remaining recoverable reserves of oil and gas per capita are only 6% of the world average, and the new production of conventional natural gas can only meet about 30% of the new demand. [0003] Renewable resources are widely concerned by everyone. In the existing technology, the use of sweet sorghum stalks to ferment bioethanol has the advantages of not competing with people for food or land. It is important for improving the future energy structure to ensure energ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P5/02C02F11/04
CPCY02E50/30
Inventor 周焕东张元成于萌萌吕志凤田开艳
Owner SHANDONG BAOLI BIOMASS ENERGY
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