SCR denitration system

Abstract

The invention provides an SCR denitration system. The SCR denitration system comprises a heat dissipation water tank, an internal combustion engine generator set, an SCR denitration device and a spraying unit, wherein the internal combustion engine generator set comprises a flue gas outlet, an intercooling water inlet and an intercooling water outlet; the SCR denitration device communicates with the flue gas outlet through a flue; the heat dissipation water tank communicates with the intercooling water inlet through a first pipeline; and the spraying unit communicates with the intercooling water outlet through a second pipeline and is arranged in a flue. Intercooling water from the heat dissipation water tank firstly enters the internal combustion engine generator set to cool the internalcombustion engine generator set, so it is guaranteed that the internal combustion engine generator set works at an optimal temperature; and then, the intercooling water from the internal combustion engine generator set is sprayed into the flue through the spraying unit so as to cool the flue gas from the internal combustion engine generator set, so a medium-temperature SCR catalyst is suitable fordenitration treatment of the flue gas from the internal combustion engine generator set.

Description

technical field [0001] The invention relates to the technical field of flue gas denitrification, in particular to an SCR denitrification system. Background technique [0002] The internal combustion engine uses natural gas or fuel oil as fuel, and drives the generator set to generate electricity through combustion to generate high-grade electric energy. Internal combustion engines are most common with piston internal combustion engines. The piston-type internal combustion engine mixes fuel and air and burns it in its cylinder, and the heat energy released makes the cylinder generate high-temperature and high-pressure gas. The expansion of the gas pushes the piston to do work, and then the mechanical work is output through the crank connecting rod mechanism or other mechanisms to drive the driven machine to work. Since the piston internal combustion engine cannot achieve low-nitrogen combustion, the NOx emission mass concentration in the flue gas is relatively high, general...

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the existing medium-temperature SCR catalyst is not suitable for the denitrification treatment of the flue gas of the internal combustion engine generator set, thereby providing an SCR denitrification system

Images