System for recycling biogas

Abstract

The invention relates to the technical field of biogas recovery, in particular to a system for recycling biogas. The system for recycling the biogas comprises a sewage station anaerobic treatment system, a biogas storage tank, a torch, a roots blower and a boiler, wherein an outlet of the sewage station anaerobic treatment system is communicated to an inlet of the biogas storage tank through a pipeline; an outlet of the biogas storage tank is communicated to an inlet of the torch through a pipeline; the outlet of the biogas storage tank is communicated to an inlet of the roots blower through a pipeline; and an outlet of the roots blower is communicated to the boiler through a pipeline. In the invention, biogas generated by the sewage station anaerobic treatment system is pressurized by the roots blower and then is inducted into the boiler to be burnt, so that not only can the explosion phenomenon caused by the biogas discharged into air be avoided and the safety of biogas utilization be improved, but also the value that the biogas is used as energy is sufficiently utilized and the coal using amount of the boiler is reduced. Moreover, sulfur dioxide generated when the biogas is burnt can be desulfurized through a desulfurization system of the boiler, so as to fulfill the aim of reducing emission.

Description

technical field [0001] The invention relates to the technical field of biogas recovery, in particular to a biogas recovery and utilization system. Background technique [0002] The anaerobic treatment system of the sewage station will produce a large amount of biogas. Since biogas is a flammable and explosive gas, it will explode when the concentration in the air reaches a certain level. Therefore, it is necessary to treat the biogas produced by the anaerobic treatment system of the sewage station. [0003] In the prior art, the biogas is transported to the torch and burned in the torch to achieve the purpose of treating the biogas. However, this torch combustion treatment method mainly considers the safety of biogas discharge, and does not take into account the utilization value of biogas. Biogas is a mixed combustible gas with methane as the main component. It has a high calorific value, so it has a good recycling value. It will inevitably waste energy if it is processed ...

AI Technical Summary

Problems solved by technology

However, this kind of torch combustion treatment mainly considers the safety of biogas discharge, and does not take into account the utilization value of biogas

Biogas is a mixed combustible gas with methane as the main component. It has a high calorific value, so it has good recycling value. It will inevitably waste energy if it is processed by torch combustion.

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