Electric heating device and distillation system for crude titanium tetrachloride containing high-concentration solid particles

Abstract

The invention relates to a crude titanium tetrachloride electric heating device containing high-concentration solid particles and a distillation system, the crude titanium tetrachloride electric heating device comprises an electric heating kettle, a fixed screen plate is arranged in the electric heating kettle, and a plurality of vertically arranged electric heating rods are mounted on the fixed screen plate; a plurality of overflowing holes for materials to pass through are formed in the fixed screen plate, a through hole vertically corresponding to a center discharging pipe on the upper end face of the electric heating kettle is formed in the center of the fixed screen plate, a center blocking pipe is installed in the through hole, and the upper end of the center blocking pipe is lower than the upper end face of the electric heating kettle; a tangential heating kettle feeding pipe is arranged on the side wall of the electric heating kettle; the position of the heating kettle feeding pipe is lower than that of the heating area formed by the plurality of electric heating rods; a blowdown control valve is arranged at the bottom of the electric heating kettle; the distillation system comprises a distillation tower, a distillation tower kettle and the crude titanium tetrachloride electric heating device. The production stability of the high-boiling-point impurity separation system can be ensured, and the heat loss of the system is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of titanium tetrachloride production technology, and in particular relates to a crude titanium tetrachloride electric heating device and a distillation system containing high-concentration solid particles. Background technique [0002] In the boiling chlorination furnace, the titanium-rich material is mixed with coke and reacted with chlorine to generate titanium tetrachloride gas. The titanium tetrachloride gas circulates through the flue on the top of the furnace to maintain a high gas temperature. Or gas-solid separation is performed in the cyclone dust removal system, and the titanium tetrachloride gas is condensed in the condensation system to obtain a crude titanium tetrachloride product. However, the dust removal system cannot completely separate the solid particles, especially the larger the production capacity and the higher the gas flow rate, the more the air flow carries the particles into the con...

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Problems solved by technology

[0004] The present invention aims at the problems that the heat exchange efficiency of the heat exchanger decreases in the process of heating titanium tetrachloride slurry with high concentration of solid particles, the heat loss of sewage discharge is large, and the steam supply is insufficient in the heating season. Coarse titanium tetrachloride electric heating device and distillation system for solid particles ensure the stable production of the high boiling point impurity separation system and greatly reduce the heat loss of the system

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