CN214456902U - Chlorination refining system - Google Patents

Abstract

The utility model discloses a chlorination refining system, including the circulating pump jar, filter, heater, the flash drum that connect gradually, the circulating pump jar be connected with flash drum bottom, flash drum top be equipped with gas outlet. The utility model discloses a chlorination refining system simple structure still can improve the completion after current refining system comes into operation, and the use in input has improved refining system's operating duration.

Description

Chlorination refining system

Technical Field

The utility model belongs to the technical field of titanium white powder production and specifically relates to a chlorination refining system.

Background

Titanium tetrachloride is the main raw material for preparing titanium sponge and titanium dioxide. In the production process of titanium tetrachloride, the raw materials contain various metal and nonmetal impurities, which can be brought into the titanium tetrachloride, and the quality of the titanium sponge and the titanium dioxide produced in the subsequent process is influenced. Such as the presence of yellow vanadyl trichloride (VOCl) in titanium tetrachloride₃) The hardness of the titanium sponge can be increased in the process of producing the titanium sponge, and the whiteness of the titanium dioxide can be influenced in the process of producing the titanium dioxide. Therefore, titanium tetrachloride needs to remove the vanadium oxytrichloride impurity to ensure that the content of the vanadium oxytrichloride impurity is highThe production requirement of the subsequent process is met.

The differences between the boiling points and the relative volatilities of titanium tetrachloride and vanadium oxytrichloride are small, so that the separation by physical rectification is not suitable. Currently, in industrial production, vanadium removal from titanium tetrachloride is mainly performed by a chemical method, which comprises the following steps: copper powder and aluminum powder vanadium removal method, hydrogen sulfide vanadium removal method and organic matter vanadium removal method. The vanadium removal method for copper powder and aluminum powder has high investment, low equipment efficiency and safety and few applications in the current practical production; although the hydrogen sulfide vanadium removal method is low in cost, the production conditions are severe, the equipment is seriously corroded, and the recovery rate of titanium tetrachloride is relatively low. In contrast, the organic vanadium removal method (generally, vanadium removal by mineral oil) has low production cost and simple and convenient operation, can realize continuous operation of a refining process, and is an ideal vanadium removal method. Due to coarse TiCl₄The vanadium is necessary to be removed because of the high vanadium impurity, the vanadium pollutes the titanium white product, the aim of removing the vanadium is realized by adding fatty acid in the process, and the process is called as refining.

Coarse TiCl₄Pumping into a circulating pump tank by a pump, pumping into a superheater by a circulating pump, heating with steam, and superheating to obtain TiCl₄The liquid enters a flash tank through an orifice plate for decompression and flash evaporation. The liquid level of the flash tank is measured by differential pressure and is interlocked with the opening of the discharge valve of the flash tank. Flash evaporated TiCl₄The gas enters the purifying tower, and the liquid is continuously heated circularly. The inventor finds that after the chlorination refining system is operated for a period of time, the load of the chlorination refining system is reduced, and the production efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a can effectively prolong the refined system of operating duration chlorination system is provided.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a chlorination refining system, is including the circulating pump jar, filter, heater, the flash drum that connect gradually, the circulating pump jar be connected with flash drum bottom, flash drum top be equipped with gas outlet.

Furthermore, the filter be cylindric, the barrel bottom is equipped with the support that is used for supporting, the barrel bottom is equipped with the row and exhausts the mouth, arranges and installs the valve on the mouth completely.

Furthermore, a detachable filter screen is arranged in the cylindrical filter.

Furthermore, the cylindrical filter is made of carbon steel.

Furthermore, a bypass is arranged on the filter. The outlet of the circulating pump tank is connected with the heater through a circulating pump to form a bypass of the filter. The filter is located at the outlet of the circulation pump.

The utility model has the advantages that: the utility model discloses a chlorination refining system simple structure still can improve the completion after current refining system comes into operation, and the use in input has improved refining system's operating duration.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

labeled as: 1-circulating pump tank, 2-circulating pump, 3-filter, 4-heater and 5-flash tank.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Example (b):

as shown in figure 1, a chlorination refining system comprises a circulating pump tank 1, a filter 3, a heater 4 and a flash evaporation tank 5 which are connected in sequence, wherein the circulating pump tank 1 is connected with the flash evaporation tank 5, and the top of the flash evaporation tank 5 is provided with a gas outlet for removing a purification tower. The filter 3 is in a vertical cylindrical shape, a support for supporting is arranged at the bottom of the cylinder, a drain port is arranged at the bottom of the cylinder, and a valve is arranged on the drain port. A detachable filter screen is arranged in the cylindrical filter 3. The cylindrical filter is made of carbon steel. The filter 3 is provided with a bypass. The outlet of the circulating pump 1 is connected with the heater 3 through the circulating pump 2 to form a bypass of the filter 3, and the filter 3 is positioned at the outlet of the circulating pump 2. After the system is put into use, the running time of the refining system is obviously improved. When 2 export flow reductions of circulating pump, pressure reduction, take place to block up promptly, discovery when clearing after the row's of material, 3 filter screen pump outlet sides of filter have more black particulate matter, show that the device filter effect is good. And when the filter screen is cleaned, the system can be operated without stopping, materials are conveyed through the bypass, production is continued, and the filter 3 is switched to operate in a pipeline after cleaning.

Claims (5)

1. A chlorination refining system, which is characterized in that: including the circulating pump jar, filter, heater, the flash drum that connect gradually, the circulating pump jar be connected with flash drum bottom, flash drum top be equipped with gas outlet.

2. The chlorination refining system of claim 1, wherein: the filter be cylindric, the barrel bottom is equipped with the support that is used for supporting, the barrel bottom is equipped with the row and exhausts the mouth, arranges and installs the valve on the mouth completely.

3. The chlorination refining system of claim 2, wherein: a detachable filter screen is arranged in the cylindrical filter.

4. The chlorination refining system of claim 2, wherein: the cylindrical filter is made of carbon steel.

5. The chlorination refining system of claim 1, wherein: the filter is provided with a bypass.

Images