White carbon black tail gas processing method and washing tower

Abstract

The invention provides a white carbon black tail gas processing method. The method comprises the following steps: spraying white carbon black tail gas in a washing liquid in a plate type washing tower, wherein the plate type washing tower comprises tower plates and a tower body having an angle of 120-150DEG to each of the tower plates, and the surface of each of the tower plates is provided with holes; and separating the washed white carbon black tail gas from the used washing liquid. The invention also provides a washing tower. The washing tower comprises a tower body, a gas inlet, a gas phase outlet, a liquid phase inlet, a liquid phase outlet, a stirring kettle gas phase return port and tower plates, an angle between each of the tower plates and the tower body is 120-150DEG, and the surface of the tower plates is provided with the holes. The plate type washing tower is adopted in the invention, and the surface of each of the tower plates is provided with the holes, so white carbon black particles can be powerfully flushed by the washing liquid, thereby a problem that the washing tower is blocked by the white carbon black particles due to the aggregation of the white carbon black particles in the washing tower is avoided, and the white carbon black white carbon black tail gas is well dedusted in the washing process.

Description

technical field [0001] The invention relates to the technical field of tail gas treatment, in particular to a white carbon black tail gas treatment method and a washing tower. Background technique [0002] Fumed silica is a silicon dioxide powder produced by high-temperature hydrolysis of organosilicon chlorides such as silicon tetrachloride or methyltrichlorosilane. It has the characteristics of small particle size, large specific surface area, high chemical purity, and good dispersion. Due to its superior stability, reinforcement, thickening and thixotropy, fumed silica is widely used in many industrial fields such as rubber, paint, medicine and papermaking. [0003] The tail gas absorption system of traditional gas-phase silica includes primary and secondary Venturi scrubbing, concentrated acid falling film tower, concentrated acid packed tower absorption, dilute acid packed tower, gas-liquid separator, alkali washing tower absorption, and its process gas phase flow pipe ...

AI Technical Summary

Problems solved by technology

The dust removal and washing tower used in this system is a packed tower, which is divided into a spray washing section, a packing absorption section and a liquid storage section from top to bottom. The tower is filled with packing of appropriate height to increase the contact area between fluids, but the gas phase The white carbon black tail gas contains a small amount of white carbon black powder, which has the characteristics of small particle size and high specific surface area. Since the washing tower used is a packed tower, and the void ratio of the packed tower is small, the white carbon black tail gas During the treatment process, the silica powder is easily adsorbed on the surface of the filler, forming a surface layer on the surface of the filler, so when the accumulation of silica is large, it is easy to block the washing tower, thus affecting the dust removal effect

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