Foam breaker

Abstract

The invention discloses a foam breaker which comprises a foam breaker barrel, wherein a Venturi tube bundle consisting of multiple Venturi tubes which are arranged in parallel is fixedly arranged in the foam breaker barrel; each Venturi tube comprises a throat tube and a flaring diffusion section which is communicated with the upper end of the throat tube and of which the inner diameter is gradually enlarged in the radial direction; a spraying pipe is fixedly arranged on the inner wall of the foam breaker barrel relative to the end of the flaring diffusion section; the lower edge of an umbrella-shaped water curtain sprayed from each umbrella-shaped spraying head is positioned outside the flaring diffusion section; a liquid collecting hopper is arranged between the upper and lower ends of the Venturi tubes positioned in the foam breaker barrel; the inner cavity of the foam breaker barrel is divided into an upper cavity and a lower cavity through the liquid collecting hopper; the lower end of the liquid collecting hopper is provided with a drainage pipe; and an outlet of the drainage pipe is arranged outside the foam breaker barrel. The foam breaker has the advantages that air bubbles formed after wet-process flue gas dust removal desulfuration can be eliminated, and the entrainment generated by the broken air bubbles is eliminated, so that the phenomenon that white smoke or trailing occurs in the chimney is reduced.

Description

technical field [0001] The invention belongs to flue gas defoaming technology, and specifically refers to a defoamer suitable for institutions such as tower flue or chimney after wet flue gas dust removal or desulfurization. Background technique [0002] In recent years, environmental protection requirements at home and abroad have become higher and higher, and all kinds of furnace flue gas and petrochemical tail gas must be discharged after dust removal and desulfurization. At present, the process of wet dedusting and desulfurization is still a reliable mainstream process. However, the commonly used wet dedusting methods such as lime method, limestone method, sodium alkali method, double alkali method, ammonia method, organic amine method, and magnesium oxide method The flue gas discharged after desulfurization treatment contains moisture or high foam content, and white smoke and trailing phenomenon are serious. Contents of the invention [0003] The purpose of the prese...

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Problems solved by technology

At present, the process of wet dedusting and desulfurization is still a reliable mainstream process. However, the commonly used wet dedusting methods such as lime method, limestone method, sodium alkali method, double alka

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