CN207429746U - A kind of multistage-combination tube type falling-film crystallizer - Google Patents

Abstract

The utility model is a multi-stage combined tubular falling film crystallizer, comprising a crystallizer main body (1), a feeding port (2), a feeding port (3), an air inlet (4), an air outlet (5), The first chamber (6), the second chamber (7), the third chamber (8), the fourth chamber (9) and the fifth chamber (10) can be continuous or Gas is fed into the crystallizer intermittently, and each chamber is independent of each other. The five chambers can be controlled to the same temperature according to actual needs, or different temperatures can be controlled according to actual needs, thereby effectively improving heat transfer. and mass transfer, belonging to the field of chemical equipment. The device has simple structure, high efficiency, good heat and mass transfer effects, precise control, and large operating flexibility.

Description

A multi-stage combined tubular falling film crystallizer

Technical field:

The utility model relates to chemical equipment, in particular to a multi-stage combined tube type falling film crystallizer.

Background technique:

Crystallization is an important chemical unit operation and plays an important role in the separation and purification of products. The crystallization process is generally divided into four categories: solution crystallization, melt crystallization, precipitation crystallization and sublimation crystallization. Melt crystallization is widely used because of its advantages of separating high-purity products, low operating temperature, less pollution, and energy saving. It mainly realizes crystallization separation according to the difference in freezing point between the separated substances.

Because the falling film crystallizer has the advantage of simple structure, falling film crystallization is a commonly used melting crystallization method, which is widely used in the refining and purification of products in petroleum, chemical, pharmaceutical and other fields. As we all know, the structure of the crystallizer directly affects the quality of crystallized products, and the process of falling film crystallization includes three processes of crystallization, sweating and melting, so it is particularly important to design a crystallizer with a simple structure and high efficiency.

Invention content:

The purpose of the utility model is to provide a multi-stage combined tubular falling film crystallizer with simple structure, high efficiency, good heat and mass transfer effects, precise control, and large operating flexibility.

A multi-stage combined tubular falling film crystallizer described in the utility model includes a crystallizer main body (1), a feed port (2), a discharge port (3), an air inlet (4), and an air outlet (5) , the first chamber (6), the second chamber (7), the third chamber (8), the fourth chamber (9) and the fifth chamber (10), characterized in that: the charging port (2) Located on the upper end of the crystallizer main body (1), the side of the feed port (2) is connected with an air outlet (5), and the discharge port (3) is located at the lower end of the crystallizer main body (1), and the discharge port The side of (3) is connected with an air inlet (4), and the outside of the crystallizer main body (1) is sequentially connected with the first chamber (6), the second chamber (7), the third chamber from top to bottom. Chamber (8), fourth chamber (9) and fifth chamber (10).

The bottom of the first chamber (6) has a first chamber liquid inlet (11), the first chamber liquid inlet (11) is connected with a temperature measuring tube (21), the first chamber (6 ) has a first chamber liquid outlet (12), and the first chamber liquid outlet (12) is connected with a temperature measuring tube (21).

The bottom of the second chamber (7) has a second chamber liquid inlet (13), the second chamber liquid inlet (13) is connected with a temperature measuring tube (21), the second chamber (7 ) has a second chamber liquid outlet (14), and the second chamber liquid outlet (14) is connected with a temperature measuring tube (21).

The bottom of the third chamber (8) has a third chamber liquid inlet (15), the third chamber liquid inlet (15) is connected with a temperature measuring tube (21), the third chamber (8 ) has a third chamber liquid outlet (16), and the third chamber liquid outlet (16) is connected with a temperature measuring tube (21).

The bottom of the fourth chamber (9) has a fourth chamber liquid inlet (17), the fourth chamber liquid inlet (17) is connected with a temperature measuring tube (21), the fourth chamber (9) ) has a fourth chamber liquid outlet (18) on the top, and the fourth chamber liquid outlet (18) is connected with a temperature measuring tube (21).

The bottom of the fifth chamber (10) has a fifth chamber liquid inlet (19), the fifth chamber liquid inlet (19) is connected with a temperature measuring tube (21), the fifth chamber (10 ) has a fifth chamber liquid outlet (20), and the fifth chamber liquid outlet (20) is connected with a temperature measuring tube (21).

Advantage and positive effect of the utility model:

1. An air inlet (4) is designed under the crystallizer body (1), which can continuously or intermittently feed gas into the crystallizer to stir the crystallization liquid in the crystallizer body (1), thereby improving heat transfer For mass transfer, a suitable inert gas can also be introduced from the air inlet (4) to protect the reaction system.

2. There are first chamber (6), second chamber (7), third chamber (8), fourth chamber (9) and fifth chamber (10) outside the crystallizer body (1) Five chambers, each chamber is independent of each other, the five chambers can be controlled to the same temperature according to actual needs, or different temperatures can be controlled according to actual needs, so as to effectively improve heat transfer and mass transfer, The operation is flexible.

3. The liquid inlet and outlet of each chamber are connected with a temperature measuring tube (21), which is convenient for monitoring the upper and lower temperatures of each chamber, and the control is more precise.

Description of drawings:

Figure 1 is a schematic diagram of a combined tubular falling film crystallizer.

Detailed ways:

Below in conjunction with accompanying drawing, the utility model is described in further detail:

As shown in Figure 1, a combined tubular falling film crystallizer comprises a crystallizer main body (1), a feed port (2), a discharge port (3), an air inlet (4), an air outlet (5), a second The first chamber (6), the second chamber (7), the third chamber (8), the fourth chamber (9) and the fifth chamber (10), the upper end of the crystallizer body (1) has a feeding port (2), the side of feed port (2) is connected with air outlet (5), the lower end of crystallizer main body (1) has discharge port (3), and the side of discharge port (3) is connected with air inlet (4). ), the outside of the crystallizer main body (1) is sequentially connected with the first chamber (6), the second chamber (7), the third chamber (8), the fourth chamber (9) and the Five chambers (10), the bottom of the first chamber (6), the second chamber (7), the third chamber (8), the fourth chamber (9) and the fifth chamber (10) all have The liquid inlet and the upper part all have liquid outlets, and all liquid inlets and liquid outlets are connected with temperature measuring tubes (21).

During use, the first chamber (6), the second chamber (7), the third chamber (8), and the fourth chamber (9) are respectively connected through the liquid inlet and the liquid outlet on each chamber. and the fifth chamber (10) are connected to the external circulation device, put temperature measuring elements in all the temperature measuring tubes (21), fill the crystallization liquid into the main body of the crystallizer (1), and set the external circulation device according to the experimental needs. The temperature of the circulation device can be passed into the crystallizer main body (1) through the air inlet (4) as required at the same time.

The description and application of the utility model here are illustrative, and are not intended to limit the scope of the utility model to the above-mentioned embodiments. Therefore, the utility model is not limited by this embodiment, and any technical solutions obtained by equivalent replacement All within the protection scope of the utility model.

Claims (6)

1. a kind of multistage-combination tube type falling-film crystallizer, including crystallizer main body (1), charge door (2), drain hole (3), air inlet (4), gas outlet (5), first chamber (6), second chamber (7), the 3rd chamber (8), the 4th chamber (9) and the 5th chamber (10), It is characterized in that：The charge door (2) is located at the upper end of crystallizer main body (1), and the side of charge door (2) is connected with gas outlet (5), the drain hole (3) is located at the lower end of crystallizer main body (1), and the side of drain hole (3) is connected with air inlet (4), institute The outside for the crystallizer main body (1) stated be sequentially connected from top to bottom first chamber (6), second chamber (7), the 3rd chamber (8), 4th chamber (9) and the 5th chamber (10).

2. a kind of multistage-combination tube type falling-film crystallizer according to claim 1, it is characterised in that：The first chamber (6) first chamber inlet (11) is arranged at lower part, and temperature tube (21), first chamber are connected on first chamber inlet (11) (6) first chamber liquid outlet (12) is arranged at top, and temperature tube (21) is connected on first chamber liquid outlet (12).

3. a kind of multistage-combination tube type falling-film crystallizer according to claim 1, it is characterised in that：The second chamber (7) second chamber inlet (13) is arranged at lower part, and temperature tube (21), second chamber are connected on second chamber inlet (13) (7) second chamber liquid outlet (14) is arranged at top, and temperature tube (21) is connected on second chamber liquid outlet (14).

4. a kind of multistage-combination tube type falling-film crystallizer according to claim 1, it is characterised in that：3rd chamber (8) the 3rd chamber inlet (15) is arranged at lower part, and temperature tube (21), the 3rd chamber are connected on the 3rd chamber inlet (15) (8) the 3rd chamber liquid outlet (16) is arranged at top, and temperature tube (21) is connected on the 3rd chamber liquid outlet (16).

5. a kind of multistage-combination tube type falling-film crystallizer according to claim 1, it is characterised in that：4th chamber (9) the 4th chamber inlet (17) is arranged at lower part, and temperature tube (21), the 4th chamber are connected on the 4th chamber inlet (17) (9) the 4th chamber liquid outlet (18) is arranged at top, and temperature tube (21) is connected on the 4th chamber liquid outlet (18).

6. a kind of multistage-combination tube type falling-film crystallizer according to claim 1, it is characterised in that：5th chamber (10) the 5th chamber inlet (19) is arranged at lower part, and temperature tube (21), the 5th chamber are connected on the 5th chamber inlet (19) (10) the 5th chamber liquid outlet (20) is arranged at top, and temperature tube (21) is connected on the 5th chamber liquid outlet (20).