A Porous Media Combustion and Fuel Cell Multilevel Coupled Energy System

Abstract

The invention discloses a porous medium combustion and fuel cell multi-stage coupling energy system, in which a low calorific value gas supply system and an air supply system are simultaneously connected to a proportional mixer, a porous medium combustion unit, a frequency conversion fan, a waste heat boiler, and an energy storage water tank , gas separation system, and fuel cell are sequentially connected; the waste heat boiler is connected to the steam turbine and the heating pipe sleeve to generate electricity and preheat the low calorific value gas respectively; the energy storage water tank is connected to the water separator and the water-cooled heat exchanger for heating and preheating respectively; The heat exchanger is connected to the water separator and the heating pipe sleeve for heating and preheating; the water collector is connected to the circulating water pump to provide cold water for the waste heat boiler, energy storage water tank and water-cooled heat exchanger; the waste gas treatment chamber treats the waste gas generated by combustion ; The intelligent control terminal controls the gas delivery operation of the whole system. The invention obtains conversion of clean energy while reducing greenhouse gas emissions, realizes clean production and utilization of coal mine gas, and promotes green and circular economic development.

Description

technical field [0001] The invention relates to the technical field of a low calorific value gas energy utilization system, in particular to a porous medium combustion and fuel cell multi-stage coupling energy system. Background technique [0002] The development of fuel cell technology has rapidly increased the demand for hydrogen, a new type of pollution-free energy. More than 70% of the gas extracted from coal mines is low-concentration gas (methane volume concentration <30%), that is, methane with an equivalence ratio of less than 4, which is not conducive to storage and utilization. Discharge into the atmosphere causes huge energy waste and environmental pollution. Therefore, the use of low-concentration coal mine gas in porous media partial oxidation reforming hydrogen production can not only effectively solve coal mine gas accidents, improve coal mine safety production conditions, but also help increase hydrogen energy supply, reduce greenhouse gas emissions, and ...

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Problems solved by technology

[0003] Today, when energy resources are extremely scarce, realizing multi-level utilization of energy is an important measure for energy conservation. Combustion hydrogen production technology is gradually developing, and the multi-level energy utilization combined with fuel cells has not yet been realized. This multi-level energy utilization system combined with porous media burners and hydrogen fuel cells can generate hydrogen while regenerating waste heat, waste gas make maximum use of

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