External temperature-increase heat exchange system of biogas fermentation reactor and working method

A technology of biogas fermentation and heat exchange system, which is applied in the field of biogas engineering, can solve the problems of low heat exchange efficiency and large heat loss, achieve high heat exchange efficiency, improve the response speed of temperature increase, and increase the effect of heat exchange contact area

Pending Publication Date: 2019-03-01
ENERGY & ENVIRONMENT RES INST OF HEILONGJIANG PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of low heat exchange efficiency and large heat loss in the heating mode of the existing biogas engineering fermentation reactor, the present invention provides an external temperature increasing heat exchange system and working method of the biogas fermentation reactor

Method used

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  • External temperature-increase heat exchange system of biogas fermentation reactor and working method

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Embodiment 1

[0035] External temperature increasing heat exchange system of biogas fermentation reactor, including fermenter reactor 1, heat exchanger 2 and heater 3;

[0036] The fermenter reactor 1 tank is provided with a biogas slurry circulation pipeline 4 communicating with its interior, and the biogas slurry circulation pipeline 4 is provided with a first valve 401, a second valve 402 and a biogas slurry circulation pump 403;

[0037] The heater 3 communicates with the heating circulation pipeline 6, and the heating circulation pipeline 6 is provided with a third valve 601, a fourth valve 602 and a heating circulation pump 603;

[0038] The heat exchanger 2 is provided with a heat medium circulation pipeline 5;

[0039] A condenser 7 is also provided in the heat exchanger 2, and the heat exchange section 41 of the biogas slurry circulation pipeline 4 and the heat release section 51 of the heat medium circulation pipeline 5 are fixedly arranged in the condenser 7;

[0040] An evapora...

Embodiment 2

[0046] In this embodiment, on the basis of Embodiment 1, an upper liquid level sensor 901 and a lower liquid level sensor 902 are provided in the heat medium buffer tank 9, and the liquid level sensor 901 and the lower liquid level sensor 902 are respectively connected to the controller. The upper liquid level sensor 901 is connected to the controller to control the opening of the exothermic water inlet valve 501, the endothermic water outlet valve 504 and the fan 505; the lower liquid level sensor 902 is connected to the controller to control the exothermic water outlet valve 502 and The closing of endothermic water inlet valve 503.

[0047] The liquid level sensors used in this embodiment are all float type liquid level sensors, and the controller model is Siemens S7-200SMART controller.

[0048]The external temperature-increasing heat exchange system of the biogas fermentation reactor provided in this embodiment is connected to the controller through the upper liquid level ...

Embodiment 3

[0050] In this embodiment, on the basis of Embodiment 2, a liquid replenishment sensor 903 and a liquid injection valve 904 are further provided in the heat medium buffer tank 9 . The liquid replenishment sensor used in this embodiment is a float type liquid level sensor.

[0051] The external temperature-increasing heat exchange system of the biogas fermentation reactor provided in this embodiment realizes the monitoring of the liquid heat medium storage in the heat medium buffer tank through the liquid replenishment sensor installed in the heat medium buffer tank, which plays a protective role and maintains the continuous stability of the biogas slurry Heat up.

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Abstract

The invention relates to an external temperature-increase heat exchange system of a biogas fermentation reactor and a working method, and belongs to the technical field of biogas engineering. The aimis to solve the problems that an existing fermentation reactor of biogas engineering is low in heat exchange efficiency according to a heating mode, and heat loss is large, and the provided external temperature-increase heat exchange system of the biogas fermentation reactor comprises the fermentation tank reactor, a heat exchanger, a heater, a biogas slurry circulating pipeline, a heating circulating pipeline and a heating medium circulating pipeline; liquid heating media enter a heat absorbing segment of the heating medium circulating pipeline to absorb heat of the heating circulating pipeline under the effect of negative pressure to be evaporated into gas; gas heating media enter a heat release segment of the heating medium circulating pipeline and are liquefied under the effect of negative pressure, and biogas slurry absorbs heat released by liquefying of the gas heating media to complete temperature increase. The heating media are used as heat exchange media during heat absorbingand releasing when having physical state changes, biogas slurry is guided into the exterior of the tank to increase the temperature to increase the contact area of heat exchange and increase the temperature-increase response speed of the biogas slurry, and heat exchange efficiency is higher than that of a traditional internal heat exchange mode.

Description

technical field [0001] The invention belongs to the technical field of biogas engineering, and in particular relates to an external temperature increasing heat exchange system and working method of a biogas fermentation reactor. Background technique [0002] As a clean biomass energy, biogas integrates environmental benefits and economic benefits. Its development and utilization is an effective measure to solve the problem of energy supply under the situation of energy shortage. Biogas is produced by the fermentation of organic matter by anaerobic microorganisms at a suitable temperature, and temperature is a key factor in biogas fermentation. If the fermentation temperature is low, the activity of anaerobic microorganisms will be low, resulting in low project operation efficiency and low energy efficiency. [0003] In order to ensure the normal fermentation production of biogas, the fermentation temperature must be stable within a certain range. Especially in winter or at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12M1/38C12M1/36C12M1/107C12M1/02C12M1/00
CPCC12M21/04C12M29/18C12M41/18C12M41/44
Inventor 周闯王欣刘伟秦国辉王玉鹏徐晓秋罗向东樊磊
Owner ENERGY & ENVIRONMENT RES INST OF HEILONGJIANG PROVINCE
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