High-temperature gas generating device on basis of porous medium combustion and heat storage

Abstract

The invention discloses a high-temperature gas generating device on the basis of porous medium combustion and heat storage. The high-temperature gas generating device comprises a first porous medium heat storage chamber, a first porous medium combustion chamber, a high-temperature flue gas distribution chamber, a second porous medium combustion chamber and a second porous medium heat storage chamber which are sequentially communicated with one another; the first porous medium heat storage chamber is communicated with the second porous medium heat storage chamber by a four-way reversing valve, and other two ports of the four-way reversing valve are respectively connected with an air pipeline and a low-temperature flue gas pipeline; the first porous medium combustion chamber and the second porous medium combustion chamber are respectively connected with a first fuel gas pipeline and a second fuel gas pipeline; and a high-temperature flue gas pipeline is arranged on the high-temperature flue gas distribution chamber. The high-temperature gas generating device is additionally provided with a porous medium combustor on the basis of a heat storage combustor, gas such as gas of coal mines and industrial exit gas with a low heat value can be combusted to generate high-temperature gas, fuel gas can be directly filled into the combustion chambers without being premixed, and accordingly the high-temperature gas generating device is high in safety.

Description

technical field [0001] The invention belongs to a high-temperature gas generating system, in particular to a high-temperature gas generating device based on porous medium combustion and heat storage. Background technique [0002] The high-temperature air generation system can not only be used in biomass high-temperature air gasification technology and high-temperature air coal gasification technology, but also has great application prospects in metallurgy, machinery and steel industries. At present, the high-temperature air generation system is mainly divided into a regenerative high-temperature air generator based on high-temperature air combustion technology and a reciprocating thermal cycle porous medium combustion high-temperature air generator. [0003] The advantages of regenerative combustion technology are simple structure, small size, strong fuel adaptability, and simple control. Porous media combustion technology, the premixed gas burns in the porous media when it...

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Problems solved by technology

However, the above method also has disadvantages: the combustion temperature of the regenerative combustion technology is relatively high, and a large amount of NOx will still be produced during combustion, causing serious secondary pollution; the porous medium combustion technology mainly deals with premixed gas at present, and there are safety problems such as tempering

This method has obvious disadvantages: the furnace temperature and high-temperature air temperature fluctuate greatly

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