Wet dust removal device and technique for titanium tetrachloride smoke

Abstract

The invention provides a wet dust removal device and a wet dust removal technique for titanium tetrachloride smoke. The device comprises a circulation slot and a bottom flow slot, wherein a separation tower and a circulation pump with an outlet connected to an inlet of a sleeve heat exchanger are mounted on the circulation slot; an air outlet is formed in the side wall of the separation tower; a mist eliminator and a plurality of cleaning blow heads with upward nozzles are arranged in the separation tower; the lower part of the side wall of the separation tower is fixedly connected with a turbulent inverse nozzle with an upward opening, wherein a two-stage blow head is arranged in the turbulent inverse nozzle; and an outlet and a liquid inlet of the sleeve heat exchanger are communicated with a liquid inlet tube and the two-stage blow head. A smoke inlet is connected with a chlorination furnace smoke outlet, the air outlet is connected with a washing and condensing process, and the outlet of the sleeve heat exchanger is connected with a front-end solid phase dust collection process; after heat exchange in the sleeve heat exchanger, circulation liquid is sent to the two-stage blow head, the liquid inlet tube and the front-end solid phase dust collection process; and after entering the turbulent inverse nozzle, chlorination furnace smoke is inversely crashed with the liquid blown from the two-stage blow head and then is washed and led to the separation tower for secondary washing. In the device, a thickener and a filter are abandoned, so that the energy consumption in production is reduced and the investment and maintenance costs of a settling and filtering system are saved.

Description

Technical field [0001] The invention belongs to the technical field of production of crude titanium tetrachloride, and relates to a wet dust removal device for flue gas containing titanium tetrachloride in the production of boiling chlorination, in particular to a turbulent washing technology for the treatment of flue gas containing titanium tetrachloride The invention also relates to a process for wet dust removal of titanium tetrachloride flue gas by using the device. Background technique [0002] In the process of producing crude titanium tetrachloride by boiling chlorination method, the titanium tetrachloride flue gas from the furnace contains a large amount of dust, which meets the requirements through cooling and dust collection, circulating washing and sedimentation filtration, gas-liquid separation and tail gas treatment. The crude titanium tetrachloride meets environmental protection emission standards. However, the thickener used in the traditional process has large eq...

AI Technical Summary

Problems solved by technology

However, the thickener equipment used in the traditional process is huge, with high failure rate and energy consumption, and high investment and maintenance costs; and the filter needs to replace the filter cloth or filter element regularly, and the on-site operating environment is poor during the replacement process

Meanwhile, the yield of titanium tetrachloride is low

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