Decentralized. Decentralized ventilation dust removal system is one several dust-producing points for office - a system, dust collector fan installed near the dust-producing equipment, generally by the production of workers to look after the production operation, do set up special management. This system has the advantages of short pipeline, simple arrangement, easy to balance the resistance, easy to adjust the air volume, etc., but the dust post-treatment is more troublesome. It is suitable for dust-producing equipment is relatively decentralized plant to install dust removal equipment location occasions, such as sintering plant, foundry (workshop) so on. Mechanical processing workshop is mostly used in single-machine dust removal, that is, each machine tool with a dust removal unit, dusty gas is purified discharged directly into the workshop.