The present invention relates to, for example, an industrial silencer that reduces noise generated in a stack installed in a regeneration and post-treatment process in an iron and steel mill mainly for pickling and acid treatment. The present invention relates to an industrial FRP resonant silencer that does not require a sound absorbing material because it does not cause corrosion.;To this end, the present invention is connected to the existing stack (1) via the flange (2a, 2b) via the inlet pipe 3 is fixed and the outlet pipe (4) is reduced and discharged to the fluid noise introduced into the inlet pipe (3) In the industrial silencer made of a, between the inlet pipe (3) and the outlet pipe (4) has a large resonance pipe group 6 and a small resonance pipe group 7 is provided with a double resonance pipe group spaced apart.
展开▼
