Honeycomb ceramic porous medium combustor and using method thereof

Abstract

The invention belongs to the technical field of combustion of low-concentration premixed gas and relates to a honeycomb ceramic porous medium combustor and a using method thereof. According to the honeycomb ceramic porous medium combustor, the premixed gas with concentration being lower than lower limit of explosion limit is adopted as a fuel. The honeycomb ceramic porous medium combustor is innovatively characterized by comprising a steady-flow section shell, a heat preservation material, a combustion section shell, baffle bricks, a honeycomb ceramic porous medium and a heat insulation complete combustion chamber, wherein the baffle bricks and the honeycomb ceramic porous medium are mounted at the front end inside the combustion section shell; the low-concentration premixed gas is preheated and starts to combust in the honeycomb ceramic porous medium; the heat insulation complete combustion chamber is formed in the rear end inside of the combustion section shell; the full reaction space is provided for the low-concentration premixed gas which is incompletely combusted. Through the honeycomb ceramic porous medium combustor, the problems of emission reduction and utilization of the low-concentration premixed gas are effectively solved; meanwhile, the honeycomb ceramic porous medium combustor has the advantages of good safety and stability, high combustion efficiency and low equipment cost.

Description

technical field [0001] The invention belongs to the technical field of combustion of low-concentration premixed gas, and relates to a honeycomb ceramic porous media burner and its use method. 3 ~420Kcal / m 3 The premixed gas is used as fuel, and the preheating zone and combustion zone with honeycomb ceramics as the porous medium are set to ensure the stable and complete combustion of the premixed gas with low concentration and low calorific value. This technology is suitable for combustion devices that use various low-concentration, low-calorific-value premixed gases as fuel, such as process tail gas in the petroleum and chemical industries or exhaust gas in the coal industry. Background technique [0002] Petroleum and coal produce a large amount of low-concentration, low-calorific-value associated gas and coal mine gas during the mining process; petroleum, chemical, manufacturing, metallurgy, pharmaceutical and other industries also produce a large amount of low-concentrat...

AI Technical Summary

Problems solved by technology

The concentration of some associated gas, coal bed methane or process tail gas may be below the lower limit of the explosion limit, and the lower calorific value is usually 250Kcal / m 3 ~420Kcal / m 3 , cannot burn continuously and stably under natural conditions, so it is usually unavailable

If it is discharged directly, it will not only waste energy but also pollute the environment

The current utilization methods include mixing other fuels to increase the calorific value or high-calorific-value gas with combustion; these methods consume a large amount of high-quality fuel while using low-concentration and low-calorific-value premixed gases, which limits the utilization of low-concentration and low-calorific value gases. range, while using cost increases and economic benefits to decrease

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