Desulfurization method of gas storage tank system

A gas storage tank and desulfurizer technology, applied in the field of gas purification, can solve the problems of corroded pipelines, equipment flow meters, affecting human health, and design equipment, etc., to achieve the effects of protecting the environment, stabilizing biogas quality, and ensuring product quality

CN111019726AInactive Publication Date: 2020-04-17上海林海生态技术股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2020-04-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a desulfurization method of a gas storage tank system. The method comprises a dehydration step, a desulfurization step and a detection step, wherein in the dehydration step, biogas is introduced into a dehydration device for dehydration and drying before biogas desulfurization operation, the dehydrated and dried biogas is desulfurized by a desulfurization device; the desulfurization device is filled with a desulfurizing agent, the content of hydrogen sulfide in biogas output from an outlet of the desulfurization device is detected, the desulfurization effect of the desulfurizing agent in the desulfurization tank can be known in time by detecting the content of hydrogen sulfide in biogas, an overhaul plan can be made in time when the desulfurization effect is reduced,and the environment is effectively protected. An iron oxide dry desulfurization process is adopted for biogas desulfurization, the content of hydrogen sulfide in biogas desulfurized by a desulfurization tank can be controlled to be below 100 ppm, the desulfurization effect is good, the biogas quality is stable, the desulfurization process is simple, the number of devices is small, operation is convenient, the desulfurizer cost is low, and the cost advantage is obvious.
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Description

technical field

[0001] The invention relates to the field of gas purification, in particular to a desulfurization method for a gas storage tank system. Background technique

[0002] Biogas, as the name suggests, is the gas in the swamp. People often see that in swamps, sewers or cesspools, there are bubbles coming out. If we strike a match, it can be ignited. This is the naturally occurring methane. Biogas is a combustible gas produced by the fermentation of various organic substances by microorganisms in isolation from the air and at a suitable temperature and humidity. During the anaerobic fermentation of biogas, a large amount of toxic hydrogen sulfide gas will be produced, although H 2 The content of S varies due to different fermentation raw materials, but it must be removed before the use of biogas. The combination of hydrogen sulfide and moisture in biogas will form corrosive reducing acid, which will seriously corrode pipelines, equipment, flow meters, etc.; at the...

Examples

Embodiment

[0042] Biogas production capacity 15000m 3 / d, import hydrogen sulfide content: 1000ppm, desulfurization precision requirement: export hydrogen sulfide content is less than 10ppm.

[0043] Since the biogas contains free water, it will have an adverse effect on the desulfurization of the iron oxide desulfurizer. The free water will cause the desulfurization agent to become muddy, the gas will drift, and the desulfurizer will quickly fail. Therefore, dehydration is required before desulfurization. Specifically, the dehydration device adopts a gas-water separator, and the gas-water separator adopts a gravity method to remove moisture; as figure 2 As shown, the gas-water separator is provided with a separator water outlet 1, a separator liquid level gauge 2, a separator outlet 3, a separator inlet 4, a separator inlet 5 and a separator outlet 6, The inside of the gas-water separator is provided with fillers. When the biogas enters the gas-water separator from the separator inlet...