Straw methane fermentation system

A biogas fermentation and straw technology, which is applied in the direction of bioreactor/fermenter combination, specific-purpose bioreactor/fermenter, gas production bioreactor, etc. Problems such as inability to promote on a large scale, to achieve the effect of simplifying the preparation process of raw materials, improving convenience, and enhancing fluidity

Active Publication Date: 2015-05-20
陕西祥和生态科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the straw existing in the existing biogas digester or biogas system needs to be equipped with special crushing equipment, which increases the cost, and the short fibers remaining in the crushed straw will accumulate and entangle after fermentation, and float up to form agglomerates, resulting in biogas The accumulation is hindered, the utilization rate of raw materials is low, and the structure of the existing straw biogas digester is complex, the production or purchase cost is high, the energy consumption is large, the cost is high, and it cannot be promoted on a large scale, and it cannot be used for large and medium-sized straw biogas digesters. To provide a straw biogas fermentation system with straw utilization rate and convenient processing of biogas residue

Method used

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Effect test

Embodiment 1

[0028] Such as Figure 1-3 As shown, the straw biogas fermentation system of this embodiment includes a fermentation tank 1. The top of the fermentation tank 1 is provided with a feed pipe 2 and a biogas pipe 3, and the bottom of the fermentation tank 1 is provided with a slag discharge port 4, which is characterized in , The tank body of the fermentation tank 1 is a double-layer three-stage cylindrical structure, the outer layer is an outer tank wall 5, and the inner layer is a cylindrical partition with drainage holes 6 evenly distributed on the plate surface and coaxial with the outer tank wall 5. The upper end of the partition 7 extends to the top of the fermentation tank 1, and is connected to the top of the fermentation tank 1, and a space for containing the biogas slurry is reserved between the inner and outer layers. The lower end of the partition 7 is provided with a separate bottom plate 8. 8 is smoothly connected to the partition 7 and extends to the slag discharge po...

Embodiment 2

[0030] Such as Figure 1-3 As shown, the straw biogas fermentation system described in this embodiment includes the components and structures described in Example 1, and also includes a feeding and pressing device, which includes a feeding pipe 2, a truncated cone-shaped pressing cover 9, and a tubular connector 10. The splash stopper 11, the sealing cover 12 and the material pressing telescopic rod 13; the feed pipe 2 is opened on the top of the fermentation tank 1, and the bottom end of the pipe part extending into the fermentation tank 1 is provided with a ring-shaped fastener 14. The ring-shaped fastener 14 is composed of two circular rings 141 fixed inside the feeding tube 2, a gap is left between the two circular rings 141, and the lower circular ring 141 is provided with two notches 142; the tubular connector 10 is fixed Installed on the upper end of the truncated cone-shaped material pressing cover 9, its diameter is smaller than the feed pipe 2, the upper edge of the tu...

Embodiment 3

[0032] Such as Figure 1-3 As shown, the straw biogas fermentation system of this embodiment includes the components and structures described in Example 2, and also includes an external circulation device for biogas slurry. The external circulation device for biogas slurry includes a discharge pipe 18 and is connected to the discharge pipe 18 At the same time, a biogas slurry return pipe 20 is provided on the top of the fermentation tank 1. The biogas slurry in the storage tank 19 is transported to the reflux tank through a water pump 21, and finally enters the space between the inner and outer layers of the fermentation tank 1. , Improve the fluidity of biogas slurry and promote fermentation. The straw biogas fermentation system also includes a slag liquid separation and recovery device, which is composed of a slag liquid separation tank 22 and a biogas liquid conveying pipe 23. The slag liquid separation tank 22 is an inclined container with a perforated isolation plate 24 in ...

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Abstract

The invention provides a straw methane fermentation system and relates to the technical field of microbiological related devices. The straw methane fermentation system mainly structurally comprises a fermentation tank, as well as a feed pipe and a methane pipe which are arranged at the top of the fermentation tank, wherein residue discharge port is formed at the bottom of the fermentation tank; a tank body of the fermentation tank is in a double-layer three-section cylinder structure; with the adoption of a feed and pressing device capable of effectively preventing biogas residue from floating and caking, raw materials such as straws can be put into the fermentation tank directly; and the system overcomes the defects that special breaking equipment is required to be configured for the straws, chopped fibers remained in the broken straws can gather, wind and float to result in caking, so that methane gathering is blocked, and a raw material utilization ratio is low and the like.

Description

technical field [0001] The invention relates to the technical field of biogas fermentation, in particular to a straw biogas fermentation system. Background technique [0002] Biogas can bring many benefits to society and individuals, and it is an important measure to build a new socialist countryside. Biogas can turn waste into wealth and solve the problem of fuel in rural areas; it can protect forest resources. As a high-quality energy source, biogas can solve farmers' daily energy consumption, alleviate rural energy shortages, and reduce farmers' deforestation and vegetation damage. It is beneficial to the protection and restoration of forest resources; it can enhance the stamina of agricultural development. Biogas fertilizers have higher nitrogen, phosphorus, and potassium content than ordinary cesspit pits, and the absorption and utilization rate of crops and the increase in yield can be improved, which can reduce the use of pesticides and chemical fertilizers in agricul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12M1/107C12M1/36
CPCC12M21/04C12M23/34C12M27/22C12M29/18C12M29/26C12M41/44C12M45/02Y02E50/30
Inventor 袁妩
Owner 陕西祥和生态科技有限公司
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