CN211561900U

CN211561900U - Cooling crystallization device

Info

Publication number: CN211561900U
Application number: CN201922362046.9U
Authority: CN
Inventors: 常先进; 谭帅
Original assignee: Anhui Shengda Chemical Technology Co ltd
Current assignee: Anhui Shengda Chemical Technology Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-09-25
Anticipated expiration: 2029-12-25

Abstract

The utility model discloses a cooling crystallization device, which comprises an outer tank body and an inner tank body which are coaxially arranged, wherein a first discharge pipe on the outer tank body is connected with a second feed pipe on the inner tank body; an outer jacket is covered outside the outer tank body, and a second water inlet pipe and a second water outlet pipe are sleeved on the outer jacket; an inner jacket covers the outer surface of the inner tank body, and a first water inlet pipe and a first water outlet pipe are sleeved in the inner jacket; the first water outlet pipe is connected with a second water inlet pipe. The utility model provides a cooling crystallization device adopts outer jacket and interior jacket to carry out cooling, has realized the heat transfer many times of cooling water, has promoted the heat-conduction utility of cooling water, has reduced the quantity of cooling water.

Description

Cooling crystallization device

Technical Field

The utility model relates to a chemical industry technical field especially relates to a cooling crystallization device.

Background

Crystallization refers to a separation process of separating out solid crystals from solution, steam or melt, and a crystallization process is an important operation unit in a chemical process and also an important link for finishing production of chemical products.

The crystallization process of potassium nitrate adopts a cooling crystallization method, the existing crystallization tank is cooled by a jacket wrapped outside the crystallization tank, and the temperature of the solution in the crystallization tank is reduced to reduce the solubility of the solute, thereby completing the crystallization process. In the prior art, the temperature of a material to be crystallized entering a crystallization tank is very high and is generally higher than 80 ℃, a jacket cools the outer wall of the crystallization tank and a solution close to the outer wall, and then heat conduction between the jacket and the solution inside the crystallization tank is increased through stirring.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a cooling crystallization device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a cooling crystallization device comprises an outer tank body and an inner tank body which are coaxially arranged, wherein a first feeding pipe and a first discharging pipe are arranged on the outer tank body, a second feeding pipe and a second discharging pipe are arranged on the inner tank body, and the first discharging pipe is connected with the second feeding pipe;

an outer jacket is covered outside the outer tank body, and a second water inlet pipe and a second water outlet pipe are sleeved on the outer jacket; an inner jacket covers the outer surface of the inner tank body, and a first water inlet pipe and a first water outlet pipe are sleeved in the inner jacket; the first water outlet pipe is connected with a second water inlet pipe.

Preferably, the second feeding pipe is positioned at the upper part of the inner tank body, and the second discharging pipe is positioned at the bottom of the inner tank body.

Preferably, the first feeding pipe is positioned at the upper part of the outer tank body, and the first discharging pipe is positioned at the lower part of the outer tank body.

Preferably, a first stirrer is arranged in the inner tank body.

Preferably, the outer tank is internally provided with a second stirrer, the second stirrer comprises a stirring shaft and stirring blades, and the stirring shaft penetrates through the bottom of the outer tank and is connected with a motor.

The utility model has the advantages that: the utility model provides a cooling crystallization device includes the outer jar body and the inner tank body of coaxial setting, and outer jar body and inner tank body outside wrap up outer jacket and interior clamping sleeve respectively, and the outer jacket cools down to the internal solution of outer jar, and interior clamping sleeve can cool down to the solution in the inner tank body and the outer jar body simultaneously, has realized the heat transfer many times of cooling water, has promoted the heat-conduction utility of cooling water, has reduced the quantity of cooling water, has promoted crystallization efficiency.

Drawings

Fig. 1 is a schematic structural diagram of the cooling crystallization device provided by the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, the utility model provides a cooling crystallization device, the outer jar of body 1 and the inner tank body 2 including coaxial setting, be equipped with first inlet pipe 1.1 and first discharging pipe 1.2 on the outer jar of body 1, first inlet pipe 1.1 is located the upper portion of the outer jar of body 1, first discharging pipe 1.2 is located the lower part of the outer jar of body 1. The outer tank body 1 is covered with an outer jacket 3, an outer heat exchange pipe is arranged in the outer jacket 3, and the outer heat exchange pipe is spirally wound in the outer jacket 3. The outer jacket 3 is provided with a second water inlet pipe 3.1 and a second water outlet pipe 3.2, the second water inlet pipe 3.1 and the second water outlet pipe 3.2 are communicated with the outer heat exchange pipe, the second water inlet pipe 3.1 is positioned at the lower part of the outer jacket 3, and the second water outlet pipe 3.2 is positioned at the upper part of the outer jacket 3. The inner of the outer tank body 1 is provided with a second stirrer 6, the second stirrer 6 comprises a stirring shaft 6.1 and a stirring blade 6.2, and the stirring shaft 6.1 penetrates through the bottom of the outer tank body 1 and is connected with a motor 7.

Be equipped with second inlet pipe 2.1 and second discharging pipe 2.2 on the inner tank body 2, second inlet pipe 2.1 is located the upper portion of the inner tank body 2, second discharging pipe 2.2 is located the bottom of the inner tank body 2. An inner jacket 4 covers the outer surface of the inner tank body 2, an inner heat exchange tube is arranged in the inner jacket 4, and the inner heat exchange tube is spirally wound in the inner jacket 4; the inner jacket 4 is provided with a first water inlet pipe 4.1 and a first water outlet pipe 4.2, the first water inlet pipe 4.1 and the first water outlet pipe 4.2 are communicated with the inner heat exchange pipe, the first water inlet pipe 4.1 is positioned at the lower part of the inner jacket 4, and the first water outlet pipe 4.2 is positioned at the upper part of the inner jacket 4. A first stirrer 5 is arranged in the inner tank body 2.

The first discharging pipe 1.2 is connected with a material conveying pump through a pipeline, and the material conveying pump is connected with the second feeding pipe 2.1 through a pipeline. The first water outlet pipe (4.2) is connected with a cooling water delivery pump through a pipeline, and the cooling water delivery pump is connected with a second water inlet pipe (3.1) through a pipeline.

The utility model provides a when cooling crystallization device moves, treat that cooling crystallization feed liquid at first gets into the outer jar of body 1 from first inlet pipe 1.1, leave outer jar of body 1 through first discharge gate 1.2 again, the material is the preliminary reduction of temperature in the outer jar of body 1, through the material delivery pump transmission through second inlet pipe 2.1 get into the inner tank body 2 in, continue to cool down in the inner tank body 2, separate out the crystal and accomplish the crystallization process, the crystal thick liquid leaves cooling crystallization device from second discharging pipe 1.2. The cooling medium, namely cooling water, firstly enters the inner heat exchange tube from the first water inlet tube 4.1, the cooling water leaves the inner heat exchange tube from the first water outlet tube 4.2, is transmitted by the cooling water delivery pump to enter the outer heat exchange tube through the second water inlet tube 3.1, and leaves the outer jacket 3 from the second water outlet tube 3.2.

The utility model discloses cooling water is successively through inner jacket 4 and outer overlap 3 among the cooling crystallization device, and inner jacket 4 can be simultaneously for the feed liquid cooling in the inner tank body 2 and the outer jar body 1 to and between inner tank body 2 and the inner jacket 4, adopt reverse heat-conduction between the outer jar body 1 and the outer jacket 3, promoted the heat-conduction utility of cooling water, reduced the quantity of cooling water, promoted crystallization efficiency.

Claims

1. A cooling crystallization device is characterized in that: the device comprises an outer tank body (1) and an inner tank body (2) which are coaxially arranged, wherein a first feeding pipe (1.1) and a first discharging pipe (1.2) are arranged on the outer tank body (1), a second feeding pipe (2.1) and a second discharging pipe (2.2) are arranged on the inner tank body (2), and the first discharging pipe (1.2) is connected with the second feeding pipe (2.1);

an outer jacket (3) covers the outer surface of the outer tank body (1), and the outer jacket (3) is provided with a second water inlet pipe (3.1) and a second water outlet pipe (3.2); an inner jacket (4) covers the outer surface of the inner tank body (2), and the inner jacket (4) is provided with a first water inlet pipe (4.1) and a first water outlet pipe (4.2); the first water outlet pipe (4.2) is connected with the second water inlet pipe (3.1).

2. A temperature-reducing crystallization device as defined in claim 1, wherein: the second feeding pipe (2.1) is located at the upper part of the inner tank body (2), and the second discharging pipe (2.2) is located at the bottom of the inner tank body (2).

3. A temperature-reducing crystallization device as defined in claim 1, wherein: first inlet pipe (1.1) is located the upper portion of the outer jar of body (1), first discharging pipe (1.2) is located the lower part of the outer jar of body (1).

4. A temperature-reducing crystallization device as defined in claim 1, wherein: a first stirrer (5) is arranged in the inner tank body (2).

5. A temperature-reducing crystallization device as defined in claim 1, wherein: the inner of the outer tank body (1) is provided with a second stirrer (6), the second stirrer (6) comprises a stirring shaft (6.1) and stirring blades (6.2), and the stirring shaft (6.1) penetrates through the bottom of the outer tank body (1) and is connected with a motor (7).