Desulfurization and denitrification device applied to environment-friendly dust removal

The utility model relates to the technical field of environment-friendly dust removal, in particular to a desulfurization and denitrification device applied to environment-friendly dust removal, which comprises a desulfurization tank, a spraying piece used for settling exhaust gas is arranged at the upper half part in the desulfurization tank, and the bottom of the desulfurization tank is designed to be a settling zone. A telescopic pressing roller is arranged in the area located above the partition plate, the area located below the partition plate is divided into a plurality of identical conveying channels, the plate face of the partition plate is divided into screening meshes with the number of screening meshes increasing in sequence, and the screening meshes located above and the conveying channels located below are arranged in a one-to-one correspondence mode. The utility model solves the problems that the follow-up screening difficulty is increased and the production efficiency is not high due to the fac