| 摘要 |
The present invention relates to an SCR device with a cleaning device for a reduction agent supply pipe capable of preventing urea from being hardened by easily removing the urea remaining inside the reduction agent supply pipe. The SCR device with the cleaning device for the reduction agent supply pipe according to the present invention includes the reduction agent supply pipe supplying a reduction agent; a compressed air supply pipe supplying compressed air; and the cleaning device for the reduction agent supply pipe removing the reduction agent remaining inside the reduction agent supply pipe. The cleaning device for the reduction agent supply pipe includes a purging line. The present invention is characterized in that the purging line, of which one end is connected to the compressed air supply pipe and the other end is connected to the reduction agent supply pipe, cleans the inside of the reduction agent supply pipe by selectively supplying the compressed air of the compressed air supply pipe to the reduction agent supply pipe. |
