Regenerative natural gas boiler energy-saving denitration integrated system

Abstract

The invention relates to a regenerative natural gas boiler energy-saving denitration integrated system which comprises a boiler body, a type I pipe combustion chamber, two groups of regenerative natural gas burners and a condenser. A regenerative high-temperature air combustion technology and an SNCR (selective non-catalytic reduction) and SCR (selective catalytic reduction) combined denitration technology are adopted, a denitration reducer is injected inside the combustion chamber, and the reducer control valve and reversing valve are subjected to interlocking action control, so that the energy-saving effect of the system disclosed by the invention is outstanding, and the fuel is effectively saved; the environment-friendly effect is outstanding, and the nitric oxide emission of the flue gas is reduced by 50% or higher; the cost is obviously saved, the overall structure of the system is compact, the production and installation cost is reduced, and due to the combined denitration technology, the catalyst cost in the operating process is reduced.

Description

technical field [0001] The invention relates to an integrated system for energy saving and denitrification of a regenerative natural gas boiler, which belongs to the fields of thermal equipment, energy saving and environmental protection of natural gas boilers. Background technique [0002] At present, various types of natural gas boilers generally use pyrotechnic tube or water tube boilers, which consume a lot of metal. In order to reduce the exhaust gas temperature, the commonly used natural gas hot water boilers are equipped with a large number of convection heating surfaces to absorb the heat of the flue gas. Due to the high hydrogen content of natural gas Therefore, the combustion products contain a large amount of water vapor. When using a large number of convective heating surfaces, if the exhaust gas temperature is too low, not only consume a large amount of metal consumables, but also easily cause the tail gas of the natural gas boiler to condense and cause corrosion...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide an integrated energy-saving and denitrification system for regenerative natural gas boilers, which solves the problems of high energy consumption and high exhaust temperature of conventional natural gas boilers, high nitrogen oxide emissions and low denitrification efficiency of conventional natural gas boilers , single denitrification measures, high denitrification cost, etc.

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