Cement kiln SCR (Selective Catalytic Reduction) reactor

The utility model discloses a cement kiln SCR (Selective Catalytic Reduction) reactor which comprises a main body, a raw flue gas inlet pipeline arranged on one side of the top end of the main body and a purified flue gas outlet pipeline arranged on the other side of the bottom end of the main body, a conveying pipeline is arranged at the end part of the purified flue gas outlet pipeline, and a connecting mechanism is arranged at the joint of the purified flue gas outlet pipeline and the conveying pipeline. The connecting mechanism is composed of a connecting assembly and a clamping mechanism. By means of the designed connecting mechanism, the problem that in the installation process of a purified flue gas outlet pipeline and a conveying pipeline of an original SCR reactor, due to the fact that blocking can be generated when a plurality of installation holes are aligned, certain inconvenience exists in the installation process is solved, and the connecting mechanism is arranged at the connecting position of t