Single boiler drum horizontally-placing type chain grate spraying denitration corner tube boiler

Abstract

The invention discloses a single boiler drum horizontally-placing type chain grate spraying denitration corner tube boiler. The structure of the single boiler drum horizontally-placing type chain grate spraying denitration corner tube boiler comprises a boiler, a cyclone separator, a U-shaped material return device, a treatment zone and a gas discharge pipe, wherein the boiler and the cyclone separator are connected by a convection flue channel, the U-shaped material return device and the boiler are connected through a flue return channel, the treatment zone is connected to the cyclone separator through a flue outlet channel, the cyclone separator comprises the convection flue channel, a denitration agent spraying nozzle and the flue outlet channel, the convection flue channel is connectedto a furnace hearth, the denitration agent spraying nozzle is connected to the convection flue channel by a bolt, the flue outlet channel is connected to the cyclone separator, the U-shaped materialreturn device comprises the flue return channel, a material return fan and a loose fan, and the treatment zone comprises a superheater, an economizer and a soot blower. According to the present invention, with the single boiler drum horizontally-placing type chain grate spraying denitration corner tube boiler, the reducing agent and the flue gas have the sufficient reaction time, such that the accidents of material returning stopping and boiler coking can be avoided, and the advantages of high efficiency and energy saving can be achieved.

Description

technical field [0001] The invention relates to a single-drum horizontal chain grate spraying denitrification corner tube boiler, which belongs to the field of flue gas denitrification equipment. Background technique [0002] Nitrogen oxide (NOx) is a gas produced by the oxidation of nitrogen during the combustion process. It not only stimulates the human respiratory system, damages animals and plants, and destroys the ozone layer, but is also one of the main substances that cause the greenhouse effect, acid rain, and photochemical reactions. First, the boiler denitrification equipment is the equipment that removes nitrogen oxides in the combustion flue gas. Contents of the invention [0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a single-drum horizontal chain grate spray denitrification angle tube boiler to solve the problem of effectively controlling the generation and emission of NOx during the combustion proces...

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Problems solved by technology

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a single-drum horizontal chain grate spray denitrification angle tube boiler to solve the problem of effectively controlling the generation and emission of NOx during the combustion process, and ensuring that the reducing agent and flue gas have sufficient reaction time

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