Biomass furnace and device for removing nitric oxide in same

Abstract

The invention relates to a biomass furnace and a device for removing nitric oxide in the furnace. The middle part of the furnace is provided with a furnace arch in a slope shape. A water-cooled stocker in parallel with the furnace arch is arranged below the furnace arch. The bottom of the front end of the stocker is provided with an ash collecting platform. A material retaining wall is arranged above the platform. A deslagging pit is arranged below the front end of the ash collecting platform, and the rear end is provided with an ash pushing device. The furnace arch, a furnace wall above the furnace arch, and two fir barriers form a denitration cavity. The furnace wall on a side of the cavity is provided with a feeding device. The furnace wall above the feeding device is provided with a blowhole. The device is characterized by simple structure, good economical efficiency, no secondary pollution, good maneuverability, and easy monitoring, and combustion efficiency of the furnace is not reduced. The device improves combustion efficiency of biomass. Under the condition of ensuring enough output of the furnace, a problem that combustion generates nitric oxide pollution is solved.

Description

technical field [0001] The invention relates to a combustion device for removing nitrogen monoxide, in particular to a biomass combustion furnace and a device for removing nitrogen monoxide in the furnace. technical background [0002] Now my country has fully implemented the 2014 air pollutant emission standards, and nitrogen oxides are important control indicators. The combustion chamber has high temperature, high efficiency, and more oxygen, so more nitrogen oxides are produced. More than 90% of the nitrogen oxide gas produced by combustion is nitric oxide. If the temperature drops, the nitrogen oxide content will decrease accordingly, but the output of the boiler will not increase, the heat exchange efficiency will be low, and the fuel will not burn cleanly. The currently used SCR and SNCR tail gas denitrification technologies have problems such as high cost, high operating cost, secondary pollution, and tail corrosion. Therefore, it is necessary to solve the problem o...

AI Technical Summary

Problems solved by technology

However, in the operation of the large-scale biomass-fired vibrating water-cooled grate boiler, there are still two problems. One is that the fuel cannot be burned. Lack of retaining wall and secondary ash pushing system; second, there are problems such as low furnace temperature, low output and tail combustion when burning black smoke and burning fuel with a larger water content. The furnace lacks a temperature control device, which causes pollution during operation Severe and low combustion efficiency

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