Sieve plate-free fluidizing chlorination furnace

Abstract

The invention discloses a sieve plate-free fluidizing chlorination furnace with the function of discharging slag from the upper part and the side of the fluidizing chlorination furnace. The fluidizing chlorination furnace is a tank body which adopts a steel structure and comprises an upper cylindrical cylinder body, a lower cylindrical cylinder body, an upper papilionaceous sealing head and a lower papilionaceous sealing head, wherein the diameter of the upper cylindrical cylinder body is different from that of the lower cylindrical cylinder body. A chlorine gas inlet chamber is arranged at the bottom of the fluidizing chlorination furnace; a material fluidizing section is arranged in the middle of the fluidizing chlorination furnace; a gas-solid separation section is arranged at the upper part of the fluidizing chlorination furnace. The chlorine inlet chamber and the material fluidizing section are lined with refractory bricks; the inner surface of the gas-solid separation section is covered with high-temperature-resistant anti-corrosive composite ceramic paint so as to prevent high-temperature chlorine gas from corroding the gas-solid separation section; a gas outlet is formed in the central position of the upper sealing head; fine-particle slag is discharged from the gas outlet along with airflow after chlorination reactions; a side slag discharge port is formed in the side wall of the upper part of the chlorine gas inlet chamber and used for discharging coarse-particle slag discontinuously; two layers of chlorine gas inlet pipes, which are designed specially, are arranged in the chlorine gas inlet chamber; each chlorine gas inlet pipe orifice is provided with a blowing block joint; the chlorine gas inlet pipes are inserted into the refractory brick layer and extend to the chamber of the fluidizing chlorination furnace; chlorine gas and blowing block airflow are prevented from impacting the refractory brick layer.

Description

technical field [0001] The invention relates to the field of chlorination furnaces, in particular to a boiling chlorination furnace without a sieve plate. Background technique [0002] The boiling chlorination furnace is the main equipment of the titanium tetrachloride preparation process, which belongs to the fluidized bed reactor, has good mass transfer and heat transfer effects, high production capacity, and the equipment is easy to be large-scaled. At present, the boiling chlorination furnaces used at home and abroad are divided into two categories: sieve plate and non-sieve plate. A chlorine gas distribution plate (sieve plate) is installed at the bottom of the fluidized chlorination furnace with a sieve plate. There are hundreds or even hundreds of chlorine holes on the chlorine gas distribution plate. The structure is complex and the manufacturing process requires high requirements. Moreover, the holes of the sieve plate are easily blocked by solid particles falling...

AI Technical Summary

Problems solved by technology

Due to the relatively high content of CaO and MgO in domestic titanium raw materials, the CaCl produced by the chlorination reaction 2 , MgCl 2 It is in a liquid state within the operating temperature range of the chlorination furnace, which will cause the powdery materials in the fluidized bed to stick to each other to form large particles or agglomerates, which cannot be carried out with the reaction product airflow, and will damage the upper slag discharge chlorination furnace in serious cases normal production

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