Gas-electricity-hydrogen comprehensive energy resource supplying system and method

Abstract

The invention discloses a gas-electricity-hydrogen comprehensive energy resource supplying system and method. The gas-electricity-hydrogen comprehensive energy resource supplying system comprises an LNG storing and fuel supply system, an electricity supplying and storing system, an electrochemical reaction system, a heat exchanging system, an LNG filling system, a CNG filling system, a hydrogen filling system, a tail gas treating system and the like. According to the gas-electricity-hydrogen comprehensive energy resource supplying system disclosed by the invention, liquified natural gas is used as SOFC starting fuel, a stable electricity source and a stable heat source can be provided, the electricity source, the heat source, and on-site wind energy and light energy distribution type electricity generating equipment can form a coupling electric power system, and finally, hydrogen is produced through electrolyzing water with an SOEC; compared with a conventional single-energy electrolytic hydrogen technology, a technical line of relying on electricity generation by an SOFC to complement natural electric power fluctuation during electricity generation through wind energy and light energy, and maintaining reaction temperature through an electricity generation byproduct namely waste heat is provided, so that high-efficiency utilization of comprehensive energy resources is realized;and the gas-electricity-hydrogen comprehensive energy resource supplying system can realize the comprehensive supply of automobile energy resources of LNG, CNG, electricity and hydrogen, and is one of feasible construction modes of a future oil, gas electricity and hydrogen comprehensive power station.

Description

technical field [0001] The invention relates to the technical field of new energy, in particular to a system and a process method for realizing the comprehensive supply of gas, electricity and hydrogen by using new energy sources such as LNG, wind and light. Background technique [0002] Liquefied Natural Gas (LNG), whose main component is methane, is recognized as the cleanest fossil energy on earth. Colorless, odorless, non-toxic and non-corrosive, its volume is about 1 / 625 of the volume of the same volume of gaseous natural gas, and the mass of liquefied natural gas is only about 45% of the same volume of water. [0003] The main component of liquefied natural gas is methane, and the boiling point of methane at atmospheric pressure is -161°C. The manufacturing process is to first purify the natural gas produced in the gas field (dehydration, dehydrogenation, and acid gas removal), and then use the process of throttling, expansion, and external cold source refrigeration t...

AI Technical Summary

Problems solved by technology

[0014] In order to overcome the shortcomings of the existing technology, the present invention provides a system and process method for realizing the comprehensive supply of gas, electricity and hydrogen by using new energy sources such as LNG, wind and light, aiming to solve the problem of hydrogen and electricity supply for gas stations in the future, Broad application prospects

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