Control system and control method for low temperature fluidizing chlorination furnace

Abstract

The invention provides a control system and a control method for a low temperature fluidizing chlorination furnace. The control system for the low temperature fluidizing chlorination furnace comprises a thermometer which is arranged in the low temperature fluidizing chlorination furnace for measuring a system temperature in the low temperature fluidizing chlorination furnace, a solid material feeding valve which is mounted between the low temperature fluidizing chlorination furnace and a raw material cabin providing carbonized blast furnace slag to the low temperature fluidizing chlorination furnace and is used for controlling addition amount of the carbonized blast furnace slag, a chlorine feeding valve which is arranged between and connected with a chlorine source and the low temperature fluidizing chlorination furnace and is used for controlling air inflow of chlorine, and a controller which adjusts the opening degrees of the solid material feeding valve and the chlorine feeding valve based on the system temperature measured by the thermometer. With the control system and the control method for the low temperature fluidizing chlorination furnace, real time control of the system temperature and the height of an inner material level of the low temperature fluidizing chlorination furnace can be realized, so a production process for titanium tetrachloride can be safely and highly efficiently carried out.

Description

technical field [0001] The invention relates to the field of low-temperature boiling chlorination furnaces, and more specifically, relates to a control system and a control method for controlling low-temperature boiling chlorination furnaces. Background technique [0002] When vanadium-titanium magnetite is used for ironmaking, the remaining blast furnace slag contains a large amount of valuable elements, among which Ti element is represented by TiO 2 The form exists in blast furnace slag, and TiO 2 The content is 20% to 22%. Carbonized blast furnace slag can be obtained after blast furnace slag is carbonized at high temperature, wherein Ti element exists in the form of TiC, and the content of TiC is 10%-14%. [0003] Currently, carbonized blast furnace slag is used as raw material in the low-temperature boiling chlorination process to produce crude titanium tetrachloride, and reacts with chlorine gas to obtain crude titanium tetrachloride. The main reaction chemical formu...

AI Technical Summary

Problems solved by technology

[0006] Moreover, chlorine gas as a production raw material is a highly toxic substance, and titanium tetrachloride as a product is also a toxic substance. In addition, there is a danger of high pressure and high temperature in the on-site operating environment.

Therefore, in many cases, when the chlorination furnace and related equipment fail, the staff cannot go to the site to solve the problem at the first time, so a control system is needed to supervise the entire low-temperature boiling chlorination furnace to adjust the chlorination furnace in real time System parameters

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