CN219091130U

CN219091130U - Rectification external circulation heating device

Info

Publication number: CN219091130U
Application number: CN202320214310.8U
Authority: CN
Inventors: 朱庆兵; 梁飞; 黄华毅
Original assignee: Huaiji Changlin Chemical Co ltd
Current assignee: Huaiji Changlin Chemical Co ltd
Priority date: 2023-02-15
Filing date: 2023-02-15
Publication date: 2023-05-30
Anticipated expiration: 2033-02-15

Abstract

The utility model provides a rectifying external circulation heating device, and belongs to the technical field of distillation. The rectification external circulation heating device comprises a tower kettle, a receiving tower, a buffer tank and a vacuum pump, wherein an external circulation heater is arranged on one side of the tower kettle, the external circulation heater is communicated with the tower kettle through a pipeline, and a cleaning component is arranged above the external circulation heater; the outer circulation heater comprises a shell, a cavity plate is arranged on the top surface of the shell, and a plurality of circulation heating pipes are arranged on the bottom surface of the cavity plate. According to the utility model, the volume of the tower kettle is reduced, the external circulation heater is additionally arranged outside the tower kettle, the materials are pumped into the internal circulation heater by the pump to be heated, the residence time of the materials in the external circulation heater is short, the materials are heated uniformly, the heating is stable, the heating efficiency is high, the heat consumption is low, the polymerization of the materials is reduced, the byproducts are few, and the product yield is high.

Description

Rectification external circulation heating device

Technical Field

The utility model relates to the technical field of distillation, in particular to a rectification external circulation heating device.

Background

The rectification is usually carried out in a rectifying tower, the gas phase and the liquid phase are in countercurrent contact to carry out phase-to-phase heat and mass transfer, volatile components in the liquid phase enter a gas phase, and the difficult-to-volatile components in the gas phase are transferred into the liquid phase, so that almost pure volatile components can be obtained at the top of the tower, and almost pure difficult-to-volatile components can be obtained at the bottom of the tower. The feed liquid is added from the middle part of the tower, and the tower section above the feed inlet is used for further thickening volatile components in rising steam, which is called a rectifying section;

the existing original tower fractionation equipment is provided with a heating coil in a tower kettle, materials reach boiling points through coil heating to carry out vacuum fractionation, and due to the fact that the tower kettle is large in size, the materials are soaked in the coil for long residence time and are subjected to high-temperature local polymerization easily, byproducts are high, the yield is low, and the energy consumption is high.

Disclosure of Invention

In order to overcome the above disadvantages, the present utility model provides a rectifying external circulation heating device which overcomes or at least partially solves the above technical problems.

The utility model is realized in the following way:

the utility model provides a rectifying external circulation heating device which comprises a tower kettle, a receiving tower, a buffer tank and a vacuum pump, wherein an external circulation heater is arranged on one side of the tower kettle, the external circulation heater is communicated with the tower kettle through a pipeline, and a cleaning component is arranged above the external circulation heater;

the outer circulation heater comprises a shell, a cavity plate is arranged on the top surface of the shell, and a plurality of circulation heating pipes are arranged on the bottom surface of the cavity plate;

the cleaning component comprises a tank body, and the tank body is fixedly arranged on the top surface of the cavity plate.

In a preferred scheme, the cavity plate is fixedly connected to the top surface of the shell, one side surface of the cavity plate is fixedly connected with a steam inlet pipe, and the outer surface of the shell is fixedly provided with a steam outlet pipe.

In a preferred scheme, the number of the circulating heating pipes is a plurality of, the plurality of the circulating heating pipes are connected to the bottom surface of the cavity plate at equal intervals, and the plurality of the circulating heating pipes are communicated with the cavity plate.

In a preferred scheme, the bottom surface of circulation heating pipe is provided with communicating pipe, communicating pipe intercommunication a plurality of circulation heating pipes, one side surface fixedly connected with rectangle connecting pipe of communicating pipe, one end fixedly connected with of play vapour pipe is at one side surface of rectangle connecting pipe.

In a preferred scheme, the surface fixedly connected with inlet tube of the jar body, the opposite side surface of the jar body is provided with the outlet pipe, the one end and the one side surface fixed connection of the jar body of outlet pipe, and extend to the inside of the jar body, the other end and the top surface fixed connection of cavity board of outlet pipe, and extend to the inside of cavity board.

In a preferred scheme, the water inlet pipe is fixedly connected to the upper outer side of the tank body, and the water outlet pipe is fixedly connected to the lower outer side of the tank body.

In a preferred scheme, the inside bottom surface fixedly connected with connecting axle of jar body, the surface rotation of connecting axle has cup jointed two sleeve shafts, and two the surface of sleeve shaft all is provided with the plectrum.

In a preferred scheme, the number of the poking sheets is four, and the four poking sheets are fixedly connected to the outer surface of the sleeve shaft at equal intervals.

The utility model provides a rectifying external circulation heating device, which has the beneficial effects that:

1. through changing into the volume that reduces the tower cauldron, install outer circulation heater outside the tower cauldron, pump the internal circulation heating of outer circulation heater into with the material with the pump, the material is at outer circulation heater's inside dwell time is short, and it is even to be heated, and the heating is stable, and heating efficiency is high, uses heat energy less, reduces the material polymerization, and the accessory substance is few, and the product yield is high.

2. Through setting up the clearance subassembly, through the external water pump of water piping connection, enter into the inside of jar body with the prefabricated solution of acidity through the inlet tube, the inside that the rethread outlet pipe enters into the cavity board enters into the circulation heating pipe under the drive of vapor at last to the inside of circulating heating pipe inner wall adnexed incrustation scale corrodes and melts, thereby has realized the purpose that can carry out effective clearance to circulating heating pipe inner wall adnexed incrustation scale, has avoided circulating heating pipe's inner wall adnexed incrustation scale to influence the problem of circulating heating pipe heating effect.

3. When the inside of jar body is gone into to the acid solution, can spout to the plectrum, and the plectrum cup joints the outer wall at the connecting axle through the sleeve rotation, consequently, when the acid solution sprays the plectrum surface, can drive the plectrum and rotate at the surface of connecting axle, can make the acid solution atomizing on the one hand, on the other hand can be further make the acid solution obtain better mixing.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a flow diagram of a rectification block provided by an embodiment of the present utility model;

FIG. 2 is a schematic view of an external circulation heater according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a circulating heating pipe according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a cleaning assembly according to an embodiment of the present utility model.

In the figure: 1. a tower kettle; 2. a receiving tower; 3. a buffer tank; 4. a vacuum pump; 5. an external circulation heater; 51. a housing; 52. a cavity plate; 53. a steam inlet pipe; 54. a steam outlet pipe; 55. a circulation heating pipe; 56. a communicating pipe; 57. a rectangular connecting pipe; 6. cleaning the assembly; 61. a tank body; 62. a water inlet pipe; 63. a water outlet pipe; 64. a connecting shaft; 65. a sleeve shaft; 66. a pulling piece.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

Examples

Referring to fig. 1-4, the present utility model provides a technical solution: a rectifying external circulation heating device comprises a tower kettle 1, a receiving tower 2, a buffer tank 3 and a vacuum pump 4, wherein an external circulation heater 5 is arranged on one side of the tower kettle 1, the external circulation heater 5 is communicated with the tower kettle 1 through a pipeline, and a cleaning component 6 is arranged above the external circulation heater 5;

the outer circulation heater 5 comprises a shell 51, a cavity plate 52 is arranged on the top surface of the shell 51, a plurality of circulation heating pipes 55 are arranged on the bottom surface of the cavity plate 52, the cavity plate 52 is fixedly connected to the top surface of the shell 51, a steam inlet pipe 53 is fixedly connected to one side surface of the cavity plate 52, a steam outlet pipe 54 is fixedly arranged on the outer surface of the shell 51, the plurality of circulation heating pipes 55 are uniformly connected to the bottom surface of the cavity plate 52 at equal intervals, the plurality of circulation heating pipes 55 are communicated with the cavity plate 52, a communicating pipe 56 is arranged on the bottom surface of the circulation heating pipe 55, the communicating pipe 56 is communicated with the plurality of circulation heating pipes 55, a rectangular connecting pipe 57 is fixedly connected to one side surface of the communicating pipe 56, one end of the steam outlet pipe 54 is fixedly connected to one side surface of the rectangular connecting pipe 57, by changing the volume of the tower kettle 1 into a small volume, the outer circulation heater 5 is arranged outside the tower kettle 1, materials are pumped into the inner circulation heater 5 by a pump, the materials stay time in the outer circulation heater 5 is short, the materials are heated uniformly, the heating efficiency is high, the materials are heated, the materials are less, the materials are polymerized and the byproducts are reduced, the byproducts are high, and the product yield is high;

the cleaning assembly 6 comprises a tank body 61, the tank body 61 is fixedly arranged on the top surface of the cavity plate 52, the water inlet pipe 62 is fixedly connected to the outer surface of the tank body 61, the water outlet pipe 63 is arranged on the surface of the other side of the tank body 61, one end of the water outlet pipe 63 is fixedly connected with one side surface of the tank body 61 and extends to the inside of the tank body 61, the other end of the water outlet pipe 63 is fixedly connected with the top surface of the cavity plate 52 and extends to the inside of the cavity plate 52, the water inlet pipe 62 is fixedly connected above the outer side of the tank body 61, the water outlet pipe 63 is fixedly connected to the outside of the tank body 61, an acidic prefabricated solution is introduced into the inside of the tank body 61 through the water inlet pipe 62, the water outlet pipe 63 is introduced into the inside of the cavity plate 52 through the water vapor, scale attached to the inner wall of the circulation heating pipe 55 is corroded and melted, the inner bottom surface of the tank body 61 is fixedly connected with the connecting shaft 64, the outer surface of the connecting shaft 64 is rotatably sleeved with two sleeve shafts 65, the two sleeve shafts 65 are rotatably connected with the outer surface of the connecting shaft 66, and the outer surface of the two sleeve shafts 66 can be rotatably connected with the outer surface 66 of the tank body 66, and the outer surface of the acid sleeve 66 can be further rotatably connected with the outer surface of the acid sleeve 66, and the acid sleeve 66 can be further rotatably connected with the outer surface of the tank body 64, and the acid sleeve 64 can be sprayed into the outer surface of the acid sleeve 64.

Specifically, the working process or working principle of the rectification external circulation heating device is as follows: when in use, in the rectification process of materials, the volume of the tower kettle 1 is reduced, the outer circulating heater 5 is additionally arranged outside the tower kettle 1, the materials are pumped into the inner circulating heater 5 by a pump to be heated, when the materials enter the inner part of the outer circulating heater 5, hot steam enters the inner parts of the cavity plates 52 through the steam inlet pipes 53 and then enter the inner parts of the circulating heating pipes 55 respectively through the cavity plates 52, the temperature of the circulating heating pipes 55 is increased, so that when the materials are in contact with the circulating heating pipes 55 in the inner parts of the shells 51, the materials are heated, the retention time of the materials in the inner parts of the outer circulating heater 5 is short, the heating is uniform, the heating is stable, the heating efficiency is high, the heat consumption is low, the polymerization of the materials is reduced, the byproducts are few, the product yield is high, and the temporal parts of the circulating heating pipes 55 in the outer circulating heater 5 are influenced by the high-temperature steam for a long time, the inner wall of the circulating heating pipe 55 is adhered with a layer of scale, thereby affecting the heating effect of the circulating heating pipe 55, therefore, the water pump is started by connecting the water inlet pipe 62 with an external water pump, then the acidic pre-prepared solution enters the inside of the tank body 61 through the water inlet pipe 62, enters the inside of the cavity plate 52 through the water outlet pipe 63, finally enters the inside of the circulating heating pipe 55 under the drive of water vapor, thereby corroding and melting the scale adhered to the inner wall of the circulating heating pipe 55, scale residues after corroding and melting are discharged outwards through the communicating pipe 56, the rectangular connecting pipe 57 and the steam outlet pipe 54, thereby realizing the aim of effectively cleaning the scale adhered to the inner wall of the circulating heating pipe 55, avoiding the problem that the scale adhered to the inner wall of the circulating heating pipe 55 affects the heating effect of the circulating heating pipe 55, when the acidic solution enters the tank 61, the acidic solution is sprayed to the stirring plate 66, and the stirring plate 66 is rotatably sleeved on the outer wall of the connecting shaft 64 through the sleeve shaft 65, so that when the acidic solution is sprayed to the outer surface of the stirring plate 66, the stirring plate 66 is driven to rotate on the outer surface of the connecting shaft 64, on one hand, the acidic solution can be atomized, and on the other hand, the acidic solution can be further mixed better.

Claims

1. The rectification external circulation heating device comprises a tower kettle (1), a receiving tower (2), a buffer tank (3) and a vacuum pump (4), and is characterized in that an external circulation heater (5) is arranged on one side of the tower kettle (1), the external circulation heater (5) is communicated with the tower kettle (1) through a pipeline, and a cleaning component (6) is arranged above the external circulation heater (5);

the outer circulation heater (5) comprises a shell (51), a cavity plate (52) is arranged on the top surface of the shell (51), and a plurality of circulation heating pipes (55) are arranged on the bottom surface of the cavity plate (52);

the cleaning assembly (6) comprises a tank body (61), and the tank body (61) is fixedly arranged on the top surface of the cavity plate (52).

2. The rectification external circulation heating device according to claim 1, wherein the cavity plate (52) is fixedly connected to the top surface of the housing (51), a steam inlet pipe (53) is fixedly connected to one side surface of the cavity plate (52), and a steam outlet pipe (54) is fixedly installed on the outer surface of the housing (51).

3. The external circulation heating device for rectification according to claim 1, wherein the number of the circulation heating pipes (55) is plural, the plural circulation heating pipes (55) are connected to the bottom surface of the cavity plate (52) at equal intervals, and the plural circulation heating pipes (55) are all communicated with the cavity plate (52).

4. The external circulation heating device for rectification according to claim 2, wherein a communicating pipe (56) is arranged on the bottom surface of the circulation heating pipe (55), the communicating pipe (56) is communicated with a plurality of circulation heating pipes (55), a rectangular connecting pipe (57) is fixedly connected to one side surface of the communicating pipe (56), and one end of the steam outlet pipe (54) is fixedly connected to one side surface of the rectangular connecting pipe (57).

5. The rectification external circulation heating device according to claim 1, wherein the external surface of the tank body (61) is fixedly connected with a water inlet pipe (62), the other side surface of the tank body (61) is provided with a water outlet pipe (63), one end of the water outlet pipe (63) is fixedly connected with one side surface of the tank body (61) and extends to the inside of the tank body (61), and the other end of the water outlet pipe (63) is fixedly connected with the top surface of the cavity plate (52) and extends to the inside of the cavity plate (52).

6. The rectification external circulation heating apparatus according to claim 5, wherein said water inlet pipe (62) is fixedly connected to the upper outer side of the tank body (61), and said water outlet pipe (63) is fixedly connected to the lower outer side of the tank body (61).

7. The rectification external circulation heating device according to claim 1, wherein a connecting shaft (64) is fixedly connected to the inner bottom surface of the tank body (61), two sleeve shafts (65) are rotatably sleeved on the outer surfaces of the connecting shaft (64), and a pulling piece (66) is arranged on the outer surfaces of the two sleeve shafts (65).

8. The external circulation heating device for rectification as claimed in claim 7, wherein the number of the poking sheets (66) is four, and the four poking sheets (66) are fixedly connected to the outer surface of the sleeve shaft (65) at equal intervals.