CN203790944U - Witherite and barium sulfide continuous acidolysis reactor - Google Patents

Abstract

The utility model discloses a witherite and barium sulfide continuous acid hydrolysis reactor, which solves the problems of long reaction time, low production efficiency and difficult separation of suspended matter. It includes inner reactor, outer reactor, hydrochloric acid pipeline, slurry pipeline, gas pipeline and stirring device; the inner reactor is placed in the outer reactor, and the bottom of the inner reactor is provided with a material outlet communicating with the outer reactor; the hydrochloric acid One end of the pipeline, slurry pipeline and gas pipeline extends into the interior of the inner reactor, and the other end extends out of the top of the outer reactor; a material overflow port is arranged on the side wall of the outer reactor. The witherite and barium sulfide continuous acidolysis reactor provided by the utility model has the characteristics of simple structure and convenient operation and control through the cooperation of inner reactor, outer reactor, hydrochloric acid pipeline, slurry pipeline, gas pipeline and stirring device; Moreover, it has the advantages of low investment, high production efficiency, difficult separation of acid hydrolysis paddle with less suspended matter, easy washing of separated acid slag, low moisture content and high yield.

Description

Witherite and barium sulfide continuous acid hydrolysis reactor

technical field

The utility model relates to chemical equipment, in particular to a witherite and barium sulfide continuous acid hydrolysis reactor which is applied to witherite and barium sulfide acid hydrolysis reaction, shortens the production time of barium chloride, and improves production efficiency and product acquisition rate. Of course, it can also be applied to the acid hydrolysis reaction of other ores.

Background technique

Barium chloride is an important chemical raw material. Witherite hydrochloric acid acid hydrolysis and barium sulfide hydrochloric acid acid hydrolysis are the main production methods for preparing barium chloride. The existing production method utilizes the intermittent acid hydrolysis process, and the main problems are long reaction time, large equipment volume, complex operation, low production efficiency, difficult post-process treatment, high product loss and other process defects. After each batch of material is put in, the next batch of material can only be put in after the reaction is completed and the material is discharged. If it is carried out intermittently, the feeding process is complicated, mechanically repeated, and the discharging process is cumbersome, which is not conducive to the subsequent step of removing impurities from the slurry. On the other hand, due to the long time-consuming of the batch mode, under the condition of constant production capacity per unit time, the reaction volume required by the batch reactor is larger, and the requirements for the stirring device are increased, because when the stirring speed is fixed, the volume increase means that The turbulence intensity of the material is reduced. When the turbulence intensity is reduced, there may be a dead angle in the material stirring, resulting in prolonged reaction time, incomplete reaction, and even crystal precipitation.

Utility model content

In order to overcome the above-mentioned technical defects, the purpose of this utility model is to provide a continuous acid hydrolysis reactor for witherite and barium sulfide that shortens the production time of barium chloride and improves production efficiency.

In order to achieve the above object, the utility model is realized through the following technical solutions: witherite, barium sulfide continuous acidolysis reactor, including inner reactor, outer reactor, hydrochloric acid pipeline, slurry pipeline, gas pipeline and stirring device; The inner reactor is placed in the outer reactor, the upper part of the inner reactor is fixedly connected with the upper part of the outer reactor through the inner reactor bracket, and the bottom of the inner reactor is provided with a material outlet communicating with the outer reactor; the hydrochloric acid One end of the pipeline, the slurry pipeline and the gas pipeline extend into the interior of the inner reactor, and the other end extends out of the top of the outer reactor; a material overflow port is arranged on the side wall of the outer reactor.

The stirring device includes a stirring motor and a stirring column. The stirring motor is placed above the exterior of the external reactor. One end of the stirring column is connected to the rotating shaft of the stirring motor, and the other end extends into the internal reactor and extends from the material outlet. Out; the stirring column is provided with an inner stirring paddle and an outer stirring paddle respectively located on both sides of the material outlet.

The end of the hydrochloric acid pipeline extending into the inner reactor is close to the bottom of the inner reactor, the end of the slurry pipeline extending into the inner reactor and the end of the gas pipeline extending into the inner reactor are both close to the top of the inner reactor.

The material overflow port is set at two thirds of the height of the side wall of the outer reactor.

The beneficial effects of the utility model are: the witherite and barium sulfide continuous acidolysis reactor provided by the utility model has a structural It is simple and easy to operate, and compared with the original batch method, it has the advantages of short reaction time and high production efficiency; when in use, the slurry is input into the internal reactor from the slurry pipeline, and the hydrochloric acid is input from the hydrochloric acid pipeline into the internal reactor. Under the action of the stirring device, the slurry and hydrochloric acid are fully mixed and reacted, and the materials after the preliminary reaction flow out through the material outlet at the bottom of the inner reactor to the outer reactor to continue the reaction. After the reaction, the material overflows to the next section through the material overflow port, which is quite convenient. Since the stirring device includes a stirring motor and a stirring column, the stirring motor is placed above the outside of the external reactor, and one end of the stirring column is connected to the rotating shaft of the stirring motor, and the other end extends into the internal reactor and passes through the material outlet. protruding; the stirring column is provided with an inner stirring paddle and an outer stirring paddle respectively located on both sides of the material outlet; respectively stirring the material in the inner reactor and the material in the outer reactor, so that the reaction is sufficient and rapid, improving production efficiency. Since the end of the hydrochloric acid pipeline stretching into the inner reactor is close to the bottom of the inner reactor, the end of the slurry pipeline extending into the inner reactor and the end of the gas pipeline extending into the inner reactor are all close to the top of the inner reactor ; Not only reduces the volatilization of hydrochloric acid, but also prevents the slurry from clogging.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic cross-sectional view of A-A in Fig. 1;

In the figure, 1—inner reactor, 2—outer reactor, 3—hydrochloric acid pipeline, 4—slurry pipeline, 5—stirring motor, 6—gas pipeline, 7—inner reactor support, 8—material overflow port, 9 —stirring column, 10—inner stirring paddle, 11—outer stirring paddle.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings, but the protection scope of the utility model is not limited to the following description.

As shown in Fig. 1 and Fig. 2, witherite and barium sulfide continuous acidolysis reactor of the present utility model comprise inner reactor 1, outer reactor 2, hydrochloric acid pipeline 3, slurry pipeline 4, gas pipeline 6 and stirring device ; The internal reactor 1 is placed in the external reactor 2, the top of the internal reactor 1 is fixedly connected with the top of the external reactor 2 by the internal reactor support 7, and the bottom of the internal reactor 1 is provided with an external reaction The material outlet connected to the reactor 2; the uniform end of the hydrochloric acid pipeline 3, the slurry pipeline 4 and the gas pipeline 6 stretches into the inner reactor 1, and the other end stretches out from the top of the outer reactor 2; on the side of the outer reactor 2 A material overflow port 8 is provided on the wall. The witherite and barium sulfide continuous acidolysis reactor provided by the utility model has the characteristics of simple structure through the cooperation of the inner reactor 1, the outer reactor 2, the hydrochloric acid pipeline 3, the slurry pipeline 4, the gas pipeline 6 and the stirring device. , and compared with the original batch mode, it has the advantages of short reaction time and high production efficiency; when in use, the slurry is input into the inner reactor 1 from the slurry pipeline 4, and the hydrochloric acid is input into the inner reactor 1 from the hydrochloric acid pipeline 3, and the stirring Under the action of the device, the slurry and hydrochloric acid are fully mixed and reacted. The material after the preliminary reaction flows out through the material outlet at the bottom of the inner reactor 1 and reaches the outer reactor 2 to continue the reaction. The gas generated is discharged through the gas pipeline 6, and the material is discharged in the outer reactor. 2. After fully reacting, it overflows to the next section through the material overflow port 8, and the operation is quite convenient.

It is worth noting that the above-mentioned stirring device can be a stirring impeller built into the internal reactor 1, or a mechanical manual stirring paddle, but these methods have disadvantages such as convenient installation and maintenance, time-consuming and labor-intensive, and are therefore preferred. The method is that the stirring device includes a stirring motor 5 and a stirring column 9, the stirring motor 5 is placed above the outside of the external reactor 2, one end of the stirring column 9 is connected with the rotating shaft of the stirring motor 5, and the other end extends into The inner reactor 1 protrudes from the material outlet; the stirring column 9 is provided with an inner stirring paddle 10 and an outer stirring paddle 11 respectively located on both sides of the material outlet; The materials in the tank are stirred to make the reaction fully and quickly, which improves the production efficiency. Moreover, the motor is arranged above the exterior of the outer reactor 2, so that it is not easily affected by the reaction raw materials and reduces potential safety hazards.

Owing to considering that hydrochloric acid has volatility, and slurry may be blocked in slurry pipeline 4, therefore as preferred mode is that described hydrochloric acid pipeline 3 stretches into the bottom of inner reactor 1 near the bottom of inner reactor 1, said One end of the slurry pipeline 4 extending into the inner reactor 1 and the end of the gas pipeline 6 extending into the inner reactor 1 are close to the top of the inner reactor 1; not only the volatilization of hydrochloric acid is reduced, but also the slurry is prevented from being blocked. It should be noted that one end of the gas pipeline 6 protruding into the inner reactor 1 is close to the top of the inner reactor 1 to prevent gas from clogging and hindering the reaction.

Preferably, the material overflow port 8 is set at two-thirds of the height of the side wall of the outer reactor 2 . After this design, the reaction raw materials can overflow into the next process after being fully reacted.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (4)

1. Witherite and barium sulfide continuous acid hydrolysis reactor, characterized in that it includes inner reactor (1), outer reactor (2), hydrochloric acid pipeline (3), slurry pipeline (4), gas pipeline (6) and a stirring device; the inner reactor (1) is placed in the outer reactor (2), and the upper part of the inner reactor (1) is fixed to the upper part of the outer reactor (2) through the inner reactor bracket (7) connection, the bottom of the inner reactor (1) is provided with a material outlet communicating with the outer reactor (2); the hydrochloric acid pipeline (3), the slurry pipeline (4) and the gas pipeline (6) extend into the inner Inside the reactor (1), the other end protrudes from the top of the outer reactor (2); a material overflow port (8) is provided on the side wall of the outer reactor (2). 2. The witherite and barium sulfide continuous acidolysis reactor according to claim 1, characterized in that: the stirring device includes a stirring motor (5), a stirring column (9), and the stirring motor (5) Placed above the exterior of the outer reactor (2), one end of the stirring column (9) is connected to the rotating shaft of the stirring motor (5), and the other end extends into the inner reactor (1) and protrudes from the material outlet; The column (9) is provided with an inner stirring paddle (10) and an outer stirring paddle (11) respectively located on both sides of the material outlet. 3. The witherite and barium sulfide continuous acidolysis reactor according to claim 1 or 2, characterized in that: one end of the hydrochloric acid pipeline (3) extending into the inner reactor (1) is close to the inner reactor (1 ), the end of the slurry pipeline (4) extending into the inner reactor (1) and the end of the gas pipeline (6) extending into the inner reactor (1) are close to the top of the inner reactor (1). 4. The witherite and barium sulfide continuous acidolysis reactor according to claim 3, characterized in that: the material overflow port (8) is set at two-thirds of the height of the side wall of the outer reactor (2) .