Flameless catalytic combustion condensing boiler with near zero pollutant discharge

Abstract

The present invention discloses a flameless catalytic combustion condensing boiler which belongs to the range of environment friendly heating device and has near zero pollutant discharge. The catalytic combustion condensing boiler is composed of a combustor chamber, a combustor cooling device, a catalyst loading container, a first-stage heat exchanger, a second-stage condensing heat exchanger and a smoke extractor. The honeycomb support in the catalyst loading container is plated with platinum or palladium catalyst, and the honeycomb support is prepared by the iolite material. The invention obtains the no-flame combustion on the cross section of honeycomb support and obtains the high-degree mixing and the high-degree uniformity of the flow velocity. The cooling device in the combustor effectively prevent the ignition of the mixed gas in the combustor chamber, which is caused by the high-temperature radiation. A cross discharge structure is adopted through a heat exchanger in the combustor, the second-stage condensing heat exchanger and the one-stage condensing heat exchanger for effectively utilizing the energy. The flameless catalytic combustion condensing boiler of the invention has the advantages of simple structure, small volume, high operation and control degree, stable combustion, facilitated heat exchange and facilitated maintenance.

Description

technical field [0001] The patent of the invention belongs to the heat supply device for environmental protection, in particular to a flameless catalytic combustion condensing boiler with near zero pollutant discharge. Background technique [0002] Boilers heated by fuel combustion include hot water boilers for heating and boiling water. Industrial smelting furnaces are commonly called ordinary flame combustion boilers, which are widely used in modern society. But it also brings a series of problems. The flaming combustion when heating the boiler will consume a large amount of fossil fuels, and the released CO, NOx, etc. will cause serious environmental pollution. How to increase the combustion rate of fuel and reduce the pollution to the environment is a subject of much concern at present. Conventional combustion in the air, NOx nitrogen oxide emissions up to 40 ~ 80ppm, CO is about hundreds to thousands of ppm, even the conventional low-nitrogen combustion, the nitrogen ...

AI Technical Summary

Problems solved by technology

A device using a new type of combustion method - catalytic combustion, which has a series of advantages such as less fuel consumption, complete combustion, and less pollution. It can save natural gas (lean combustion), and the nitrogen oxides and CO emissions are about 1-5ppm. , the characteristics of low environmental pollution, and the catalytic combustion method of nearly zero pollutant emissions, the realization of a new structure of natural gas catalytic combustion boilers has not been reported.

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