Hydrogen energy utilization gas mixing system and hydrogen and natural gas proportioning control method

A ratio control, natural gas technology, applied in mixing methods, chemical instruments and methods, gas and gas/vapor mixing, etc., can solve the problem of slow signal feedback, no dual-gas mixing follow-up flow mixing scheme, hydrogen equipment Use safety and other issues to achieve the effect of applicability, fast and stable dynamic follow-up

CN111992071APending Publication Date: 2020-11-27JINCHENG MINGSHI COAL LAYER USING +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-11-27

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Abstract

The invention discloses a hydrogen energy utilization gas mixing system and a hydrogen and natural gas proportioning control method, and relates to the technical field of renewable energy utilization.Source hydrogen enters a gas mixing pipeline and passes through an inlet ball valve, a pneumatic cut-off valve and a filter, the hydrogen flow is metered through a flow meter, the hydrogen consumption is adjusted through an adjusting valve, and then the hydrogen enters a gas mixing device through an outlet ball valve; source natural gas enters the gas mixing pipeline, passes through the inlet ball valve and a filter stop valve, is pressure-regulated and metered, reaches the outlet ball valve via the adjusting valve and then enters a gas mixing device; and detection equipment at a mixed gas outlet is matched with the flow value after temperature and pressure compensation to jointly control the opening degree of an adjusting valve on a natural gas and hydrogen pipeline and control the volume flow of hydrogen, online adjustment and automatic following of the hydrogenation amount are conducted, and natural gas and hydrogen proportioning is achieved. According to the invention, a stable gas mixing ratio of two gases is realized, the mixing precision is high, the equipment is integrally skid-mounted, and a stainless steel box body with heat preservation and noise reduction functions isexternally arranged, so that the equipment is compact and attractive, and is convenient to install and migrate.
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Description

technical field

[0001] The disclosure of the present invention relates to the technical field of renewable energy utilization, in particular to a hydrogen energy utilization gas mixing system and a method for controlling the ratio of hydrogen and natural gas. Background technique

[0002] At present, the hydrogen energy utilization industry will develop rapidly. By building a hydrogen energy industry chain, we can promote the overall development of the new energy industry, build high-end application demonstrations of new energy, and comprehensively upgrade the energy consumption structure. Adding hydrogen to natural gas is one of the main forms of hydrogen energy utilization. The hydrogen produced by electrolysis of renewable energy and the excess hydrogen generated under the full-load operation of the hydrogenation station are injected into the natural gas pipeline network to form hydrogen-doped natural gas, and then passed through the pipeline. The network will transport h...

Examples

Embodiment

[0084] (1) Technical parameters of gas mixing equipment

[0085] 1. Overview of device name

[0086] Gas, hydrogen blending equipment

[0087] 2. Environmental climate conditions

[0088] Annual extreme minimum temperature: -25°C;

[0089] ·Extreme maximum temperature: 36.8°C;

[0090] ·Annual average precipitation: 750mm.

[0091] 3. Temperament components

[0092] 3.1 CBM gas quality

[0093] Due to the unstable methane concentration of coalbed methane, the methane concentration is between 90% and 99%, and the rest is mainly nitrogen, oxygen, carbon dioxide, etc., and the gas contains moisture, fine coal dust, dust and other impurities, the equipment provided by the seller must meet the Temperament requirements.

[0094] 3.2 Hydrogen Gas

[0095] The hydrogen concentration is 80%-99%

[0096] 3.3 Hydrogen doping ratio

[0097] The hydrogen doping ratio is 3%-20%.

[0098] 3.4 Traffic

[0099] The hourly design flow rate of the blending equipment is 600 cubic mete...