Integrated energy-saving SCR denitration device

Abstract

The invention provides an integrated energy-saving SCR denitration device. The integrated energy-saving SCR denitration device comprises an SCR denitration reaction chamber and a heat exchange chamber. Smoke before reaction is fed through a cold fluid inlet of the heat exchange chamber, and a cold fluid outlet is connected with a smoke inlet of the SCR denitration reaction chamber; a hot fluid inlet of the heat exchange chamber is connected with a smoke outlet of the SCR denitration reaction chamber, and a hot fluid outlet is a smoke outlet. Reacted high-temperature smoke serves as hot fluid to heat the smoke before reaction, waste heat of the reacted high-temperature smoke is sufficiently used, the energy use rate is increased, and running cost is reduced. According to the integrated energy-saving SCR denitration device, a dust removing chamber, the heat exchange chamber, a gas mixing chamber, the SCR denitration reaction chamber and a reduction agent evaporation chamber are integrally arranged in a cylinder shell in an optimized mode, design is compact, the pipe conveying flow of smoke is effectively shortened, no pipe is required between every two adjacent chambers, heat losses of smoke in the pipe conveying process are reduced, and meanwhile the occupied area of the denitration device is saved.

Description

technical field

[0001] The invention relates to the technical field of SCR denitrification devices, in particular to an integrated energy-saving SCR denitrification device. Background technique

[0002] SCR is the most widely used denitrification technology in industry. It can be applied to power plant boilers, industrial boilers, etc. Under ideal conditions, it can make NO x The removal rate of this method is more than 90%. Due to the high efficiency of this method, it is the best one that can be found at present and can be widely used in fixed source NO x Governance technology. The principle of this method is: use an appropriate reducing agent, and under certain conditions, use ammonia as the reducing agent in the catalytic reaction to convert nitrogen oxides into harmless nitrogen and water vapor.

[0003] With the large-scale use of SCR denitrification devices in my country, the efficient removal of nitrogen oxides by denitrification equipment has led to a good control...

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