High temperature dust collector

摘要

A dust collector for handling high temperature process gases such as air containing dust and dirt. The collector includes a cylindrical filter housing and a clean air plenum mounted over the housing. A series of ceramic filter tubes are mounted in a tube sheet situated between the housing and the plenum and hot dirt containing process air is drawn from the housing into the plenum through the filter tubes. A blowdown system is mounted in the plenum over the filter tube for periodically pulsing a jet of dirt removing air into the filter tubes with sufficient force to remove dirt and dust collected upon the filter tubes. The valves and the inlet piping to the blowdown tubes are protected from the heat generated in the housing by a pair of spaced apart heat shields that are designed to conduct a natural flow of cool ambient air over the pipes. Heat exchanger fins are mounted upon the pipes to further enhance the cooling process.