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Recovery power generation technology of methane generated by paper-making wastewater treatment

A technology for papermaking waste water and biogas, which is applied in the direction of gas fuel, petroleum industry, engine components, etc., can solve problems such as not considering the value of biogas utilization, and achieve considerable economic benefits

Inactive Publication Date: 2013-03-20
SHANYING INT HLDG CO LTD
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Problems solved by technology

This torch combustion treatment method mainly considers the safety of biogas discharge, but does not take into account the utilization value of biogas

Method used

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  • Recovery power generation technology of methane generated by paper-making wastewater treatment

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Embodiment Construction

[0015] The recovery and power generation process of biogas produced by papermaking wastewater treatment in the present invention firstly sends the biogas generated by the anaerobic treatment system of papermaking wastewater into the biogas stabilizing cabinet for voltage stabilization; since the H2S content in the biogas is about 200g / L, the biogas needs to be sent to the desulfurization system After desulfurization treatment, the H2S in the biogas is reduced to below 0.05g / L; the desulfurized biogas is sent to the gas storage tank for collection, and then sent to the dryer for dehydration and drying through the fan, until there is no free in the biogas State of water (moisture content below 40g / Nm 3 ); the dried biogas is filtered through a filter to filter out large particles of impurities in the biogas. The filtration accuracy is 5 μm. 3 ; The filtered biogas is sent to the biogas generator set for power generation, and a flame arrester device is installed at the front end ...

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Abstract

The invention discloses recovery power generation technology of methane generated by paper-making wastewater treatment. First, the methane generated by a paper-making wastewater anaerobic treatment system is conveyed to a methane pressure-stabilizing cabinet for pressure stabilization; then the methane is conveyed to a desulfurization system for desulfurization treatment; the content of hydrogen sulfide (H2S) decreases from 200 grams per liter to 0.05 gram per liter after the desulfurization treatment; then the methane after the desulfurization treatment is conveyed to a methane storage tank for collection and conveyed into a drier through a draught fan for dehydration and drying until no free water exists in the methane, and the water content of the methane is lower than 40 grams per cubic nanometer; then the methane after being dried passes through a filter for filtration treatment, large grained impurities in the methane is filtered out; finally, the methane after filtration is conveyed to a methane generating set for power generation; and the front end of the methane generating set is provided with a fire arrestor device so that the burning methane is prevented from returning to the device at the front end. The recovery power generation technology of the methane generated by the paper-making wastewater treatment not only effectively solves the environment problems caused by methane drainage but also well uses methane resources to produce considerable economic value.

Description

technical field [0001] The invention relates to the technical field of biogas recovery and utilization, in particular to a biogas recovery and power generation process generated by an anaerobic treatment system for papermaking wastewater. Background technique [0002] Papermaking wastewater produces a large amount of biogas during the anaerobic treatment process. Biogas is a methane-rich biomass gas with a methane content of over 70% and a calorific value slightly higher than that of city gas. It is a very good gas fuel and has a good utilization value. At the same time, biogas is also a polluting gas, containing sulfide gas (hydrogen sulfide, mercaptan, sulfide, thiophene and other organic sulfides), ammonia gas, halogen gas and other odorous or irritating gases, which seriously affect the quality of the atmospheric environment. In addition, methane in biogas is also a strong greenhouse gas, and its equivalent mass is 21 times that of carbon dioxide. Therefore, resource u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L3/10F02G5/02F22B1/18
CPCY02T10/166Y02T10/12
Inventor 王传颂陈镕
Owner SHANYING INT HLDG CO LTD
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