Method and apparatus for fermentation production of sludge gas with mixed stalk raw material

A technology for mixing raw materials and producing biogas, which is applied in the methods of biological material sampling, fermentation, and biochemical cleaning devices, etc., can solve the problem of winter production of biogas in alpine regions, single pretreatment method, and low comprehensive utilization rate. To achieve sustainable development, avoid secondary pollution, and reduce construction costs

Inactive Publication Date: 2009-05-13
新疆西域牧歌农业科技有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing traditional biogas digesters have a single pretreatment method and a single processing raw material, which cannot well solve the winter production problem of biogas in alpine regions. It

Method used

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  • Method and apparatus for fermentation production of sludge gas with mixed stalk raw material

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specific Embodiment approach 1

[0008] Embodiment 1: As shown in the figure, it is a method and device for producing biogas by fermenting straw mixed raw materials. The present invention has designed the pretreatment of three kinds of raw materials, is 1. livestock and poultry feces pretreatment pond, 2. kitchen life garbage pretreatment pond, 3. straw pretreatment pond, wherein straw pretreatment pond 3 is a closed box, the bottom has Heating device, inside there are 4. Rotating box with micropores and 5. Biogas slurry spray head, three pretreatment tanks are connected with 13. Anaerobic fermentation main tank through transmission pipeline with sludge pump, anaerobic fermentation main tank 12. Stirring device, 14. Circulating heating coil and 15. Temperature probe are installed in the pool 13; the anaerobic fermentation main pool 13 is connected with the 16. anaerobic fermentation auxiliary pool through a transmission pipeline with a sludge pump, Pool 16 is connected to 7. sedimentation tank through 9. tran...

specific Embodiment approach 2

[0009] As shown in the figure, in this embodiment, on the basis of Embodiment 1, the straw pretreatment pool 3 is a closed box, heat preservation measures are taken, the bottom is heated, and the temperature is controlled at medium temperature or high temperature, so that the efficiency of straw pretreatment is improved.

specific Embodiment approach 3

[0010] As shown in the figure, this embodiment adopts heat preservation measures for all three pretreatment tanks on the basis of specific embodiment 1. The bottom is heated, and the temperature is controlled at medium temperature or high temperature, so that the pretreatment efficiency of all feed liquids is improved.

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Abstract

The invention relates to a method for producing biogas through the fermentation of a straw mixed raw material and a device thereof, in particular to a method for producing the biogas through second-stage middle temperature fermentation treatment to a mixed raw material of cellulose of plant straws, kitchen household garbage, livestock and poultry manure and sewage, and a device thereof. The device is suitable for the comprehensive utilization of crop straws, kitchen household garbage, livestock and poultry manure and so on, and belongs to equipment needed by environmental engineering. The method comprises the following steps: through three pretreatment modes, the three raw materials are pretreated and then are mixed according to the proportion of 1 to 1 to 3; the mixing ratio of each raw material can be 10 to 20 percent more or less; the carbon-nitrogen mol ratio is controlled to be between 25 to 1 and 30 to 1; the raw materials enter a main anaerobic fermentation tank and an auxiliary anaerobic fermentation tank after the mixing; the volume ratio of the main tank and the auxiliary tank is 1 to 1.5; the main anaerobic fermentation tank is provided with a thermal insulation layer; and a zymocyte bed, a stirring device, a temperature control device, and a circulating hot water heating device are arranged in the main anaerobic fermentation tank. The device can synchronously treat the plant straws, the kitchen household garbage, and the livestock and poultry manure and sewage, realize the automatic thermostatic control and second-stage fermentation, and has high biogas yield.

Description

Technical field [0001] The present invention relates to a method and device for producing biogas by fermenting mixed raw materials of straw, in particular to a secondary medium-temperature fermentation treatment of biomass resources, that is, cellulose raw materials of plant straw, kitchen garbage, livestock and poultry feces and sewage mixed raw materials fermented to produce biogas method and device. It is suitable for the comprehensive utilization of crop straw, kitchen waste, livestock and poultry manure, etc., and is an equipment device required by environmental engineering. Background technique [0002] Implementing the scientific outlook on development, realizing the harmonious development between man and nature, expanding the recycling of resources, promoting the scientific utilization of biomass energy and protecting the ecological environment have become more and more themes of development in the world today. Oil resources, which are the backbone of the world econ...

Claims

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Application Information

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IPC IPC(8): C12M1/107C12M1/38C12M1/02C12P5/02C02F11/04
CPCY02E50/343C12M23/58C12M21/04C12M45/02C12M27/06C12M29/18C12M33/22C12M41/24Y02E50/30Y02W10/37
Inventor 刘军林
Owner 新疆西域牧歌农业科技有限公司
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