CN217246831U

CN217246831U - Flash evaporation crystallizer

Info

Publication number: CN217246831U
Application number: CN202220997095.9U
Authority: CN
Inventors: 徐彦国; 韩涛
Original assignee: Hebei Yanming Chemical Equipment Co ltd
Current assignee: Hebei Yanming Chemical Equipment Co ltd
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2022-08-23
Anticipated expiration: 2032-04-27

Abstract

The utility model provides a flash evaporation crystallizer, which comprises a shell and a liquid distribution assembly, wherein the shell is provided with a feed inlet, a discharge outlet, a circulating liquid inlet, a circulating liquid outlet and a secondary steam outlet; the liquid distribution assembly is arranged inside the shell and is connected and communicated with the feed inlet, and a plurality of liquid outlets are formed in the lower side of the liquid distribution assembly and used for discharging materials entering the shell from the feed inlet into the shell from the plurality of liquid outlets so as to disperse the materials. The utility model provides a flash distillation crystallizer can prevent that local crystallization supersaturation is too big in the feed liquid dispersion discharge who gets into the cloth liquid subassembly casing, causes the crystal granularity little, can regard as again to spray, reduces the production of fog foam.

Description

Flash evaporation crystallizer

Technical Field

The utility model belongs to the technical field of chemical industry equipment, concretely relates to flash distillation crystallizer.

Background

The raw material solution of the flash evaporation crystallizer is preheated by a heater outside the device for the most part, then is injected into the crystallizer, after entering a vacuum environment, the flash evaporation effect is generated immediately, the steam can be pumped away instantly, and then the temperature reduction process is started to continue, so that the solution is concentrated and cooled to be crystallized.

However, the existing flash evaporation crystallizer generally uses a pipeline for feeding, feed liquid falls into the flash evaporation crystallizer in a centralized manner, and the supersaturation degree of local solution is too large after the feed liquid enters the flash evaporation crystallizer, so that the crystal granularity is small.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a flash distillation crystallizer aims at solving among the prior art flash distillation crystallizer feeding and concentrates on causing local solution supersaturation too big, the little technical problem of crystal granularity.

In order to achieve the above object, the utility model adopts the following technical scheme: providing a flash crystallizer comprising:

the device comprises a shell, a circulating liquid inlet, a circulating liquid outlet and a secondary steam outlet, wherein a feed inlet, a discharge outlet, the circulating liquid inlet, the circulating liquid outlet and the secondary steam outlet are formed in the shell;

the liquid distribution assembly is arranged inside the shell and is connected and communicated with the feed inlet, a plurality of liquid outlets are formed in the lower side of the liquid distribution assembly and used for discharging materials entering the shell from the feed inlet into the shell from the plurality of liquid outlets, and therefore dispersed cloth is achieved.

In a possible implementation manner, the shell comprises an upper cylinder and a lower cylinder, the upper cylinder is connected with and communicated with the lower cylinder, the upper cylinder is used for separating gas from liquid, the lower cylinder is used for storing liquid, and the inner diameter of the lower cylinder is smaller than that of the upper cylinder; the feed inlet with go up the barrel and connect, the secondary steam export is established go up the barrel top, discharge gate, circulation liquid import, circulation liquid export all with down the barrel is connected.

In a possible implementation manner, the liquid distribution assembly comprises a liquid distribution pipe and a mounting frame, the mounting frame is connected with the inner wall of the shell, the liquid distribution pipe is connected with the mounting frame, the feed inlet is connected with the liquid distribution pipe and communicated with the liquid outlet, and a plurality of liquid outlets are arranged on the lower side of the liquid distribution pipe.

In one possible implementation, the liquid distribution pipe is arranged in a circular ring structure.

In a possible implementation manner, the liquid distribution pipe is arranged in a plane spiral structure.

In a possible implementation manner, the liquid distribution assembly further comprises a connecting flange, one side of the connecting flange is connected with the liquid distribution pipe, and the other side of the connecting flange is connected with the feed inlet.

In a possible implementation manner, the shell is further provided with two liquid level meter ports, the two liquid level meter ports are respectively arranged on the upper barrel body and the lower barrel body, and the two liquid level meter ports are respectively connected with two ends of the liquid level meter.

In a possible implementation manner, a pressure gauge port is further arranged on the upper cylinder body and used for installing a pressure gauge; the lower barrel is also provided with a thermometer port for mounting a thermometer.

In a possible implementation manner, the bottom of the lower cylinder body is further provided with a washing port for washing the lower cylinder body.

In a possible implementation mode, the steam generator further comprises a baffle plate and a plurality of protruding structures, wherein the baffle plate is arranged on the lower side of the secondary steam outlet and connected with the shell, and the protruding structures are connected with the lower side of the baffle plate.

The utility model provides a flash distillation crystallizer's beneficial effect is: compared with the prior art, the flash evaporation crystallizer provided by the utility model is provided with a shell and a liquid distribution component, wherein the shell is provided with a feed inlet, a discharge outlet, a circulating liquid inlet, a circulating liquid outlet and a secondary steam outlet; the liquid distribution assembly is connected with the feed inlet, and the downside of liquid distribution assembly is equipped with a plurality of liquid outlets, can prevent that local crystallization supersaturation is too big in the feed liquid dispersion discharge who gets into the liquid distribution assembly casing, and it is little to cause the crystal granularity, can regard as again to spray, reduces the production of mist foam.

Drawings

Fig. 1 is a schematic structural view of a flash evaporation crystallizer provided in an embodiment of the present invention;

fig. 2 is a schematic front view of a liquid distribution assembly in a flash evaporation crystallizer according to a first embodiment of the present invention;

fig. 3 is a schematic structural view of a liquid distribution assembly in a flash evaporation crystallizer provided in the second embodiment of the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 1;

description of reference numerals:

10. a housing; 11. an upper cylinder body; 12. a lower cylinder body; 101. a feed inlet;

102. a discharge port; 103; a circulating liquid inlet; 104. a circulating liquid outlet;

105. a secondary steam outlet; 106. a level gauge port; 107. a pressure gauge port;

108. flushing the opening; 109. a thermometer port; 20. a liquid distribution pipe; 21. a mounting frame;

22. a connecting flange; 30. a baffle plate; 31. and (4) a convex structure.

Detailed Description

In order to make the technical problem, technical solution and beneficial effects to be solved by the present invention more clearly understood, the following description is made in conjunction with 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.

Referring to fig. 1 and 4 together, the flash evaporation crystallizer provided by the present invention will now be described. The flash evaporation crystallizer comprises a shell 10 and a liquid distribution assembly, wherein a feed inlet 101, a discharge outlet 102, a circulating liquid inlet 103, a circulating liquid outlet 104 and a secondary steam outlet 105 are arranged on the shell 10; the liquid distribution assembly is arranged inside the shell 10 and is connected and communicated with the feed inlet 101, and a plurality of liquid outlets are formed in the lower side of the liquid distribution assembly and used for discharging materials entering the shell 10 from the feed inlet 101 into the shell 10 from the plurality of liquid outlets, so that dispersed distribution is achieved.

The utility model provides a flash distillation crystallizer's beneficial effect is: compared with the prior art, the flash evaporation crystallizer provided by the utility model is provided with a shell 10 and a liquid distribution component, wherein the shell 10 is provided with a feed inlet 101, a discharge outlet 102, a circulating liquid inlet 103, a circulating liquid outlet 104 and a secondary steam outlet 105; liquid distribution assembly is connected with feed inlet 101, and liquid distribution assembly's downside is equipped with a plurality of liquid outlets, can arrange into casing 10 with the feed liquid dispersion that gets into liquid distribution assembly in, prevent that local crystallization supersaturation is too big, cause the crystal granularity little, can regard as again to spray, reduce the production of mist.

As shown in fig. 1, in a specific embodiment, the housing 10 includes an upper cylinder 11 and a lower cylinder 12, the upper cylinder 11 is connected to and communicates with the lower cylinder 12, the upper cylinder 11 is used for gas-liquid separation, the lower cylinder 12 is used for liquid storage, and the inner diameter of the lower cylinder 12 is smaller than that of the upper cylinder 11; the feed inlet 101 is connected with the upper cylinder 11, the secondary steam outlet 105 is arranged at the top of the upper cylinder 11, and the discharge outlet 102, the circulating liquid inlet 103 and the circulating liquid outlet 104 are all connected with the lower cylinder 12.

It should be noted that, in the design of the flash evaporation crystallizer, especially when the flash evaporation crystallizer is designed to easily generate mist carrying materials, the requirement on the gas-liquid separation space of the crystallizer is relatively high, the requirement on the liquid storage section is not too high, if the whole flash evaporation crystallizer is designed to have the same diameter, the equipment investment will be increased, and the cost can be saved by setting the liquid storage section and the gas-liquid separation section as the upper cylinder 11 and the lower cylinder 12 which have different diameters.

As shown in fig. 1 and 2, in a specific embodiment, the liquid distribution assembly includes a liquid distribution pipe 20, a connecting flange 22 and a mounting frame 21, the mounting frame 21 is connected to the inner wall of the housing 10, the liquid distribution pipe 20 is connected to the mounting frame 21, one side of the connecting flange 22 is connected to the liquid distribution pipe 20, the other side is connected to the feed port 101, and a plurality of liquid outlets are disposed at the lower side of the liquid distribution pipe 20.

Specifically, mounting bracket 21 can be dismantled with casing 10 and be connected, cloth liquid pipe 20 downside and mounting bracket 21 butt, and cloth liquid pipe 20 passes through flange 22 and is connected with feed inlet 101, and the dismouting, the maintenance, the change of cloth liquid pipe 20 of being convenient for.

As shown in fig. 1 and 2, in a specific embodiment, the liquid distribution pipe 20 is disposed in a circular ring structure, and in particular, a plurality of liquid outlets are uniformly disposed on the lower side of the liquid distribution pipe 20, so that the liquid can enter the housing 10 more dispersedly and uniformly.

As shown in fig. 1 and 3, in a specific embodiment, the liquid distribution tube 20 is arranged in a planar spiral structure to make the liquid more dispersed and uniform without affecting the gas discharge in the housing 10.

As shown in fig. 1, in a specific embodiment, two level gauge ports 106 are further disposed on the housing 10, the two level gauge ports 106 are respectively disposed on the upper barrel 11 and the lower barrel 12, the two level gauge ports 106 are respectively connected to two ends of the level gauge to monitor the amount of the feed liquid in the housing 10 in real time, and when the amount of the feed liquid is less than a preset amount, the feed liquid is timely flushed into the housing 10.

As shown in fig. 1, in a specific embodiment, the upper cylinder 11 is further provided with a pressure gauge port 107 for installing a pressure gauge to monitor the pressure of the housing 10 in real time, so as to maintain a predetermined pressure environment inside the housing 10; the lower cylinder 12 is further provided with a thermometer port 109 for installing a thermometer to monitor the temperature of the material liquid in the shell in real time.

In a specific embodiment, as shown in fig. 1, a washing port 108 is further formed at the bottom of the lower cylinder 12 for washing the lower cylinder 12, and a large amount of impurities may be attached to the inside of the housing 10 after a long time use, which requires regular washing of the housing 10.

As shown in fig. 1 and 4, in a specific embodiment, the steam turbine further includes a baffle plate 30 and a plurality of protrusion structures 31, the baffle plate 30 is disposed at a lower side of the secondary steam outlet 105 and connected to the casing 10, and the protrusion structures 31 are connected to a lower side of the baffle plate 30.

Specifically, the area of the baffle plate 30 is larger than that of the secondary steam outlet 105, the baffle plate 30 completely shields the secondary steam outlet 105, and when the secondary steam is discharged from the shell 10, the secondary steam firstly contacts with the baffle plate 30 to remove most of mist entrained in the secondary steam, then flows out from the edge of the baffle plate 30 and is discharged through the secondary steam outlet 105; the lower side of the baffle plate 30 is provided with a plurality of convex structures 31, so that the resistance to secondary steam can be increased, and the defoaming efficiency is improved; the specific protruding structure 31 may be a plate, a block, a column, a cone, etc.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A flash crystallizer, comprising:

the device comprises a shell, a circulating liquid inlet, a circulating liquid outlet and a secondary steam outlet, wherein a feed inlet, a discharge outlet, the circulating liquid inlet, the circulating liquid outlet and the secondary steam outlet are formed in the shell; and

2. The flash crystallizer of claim 1, wherein the shell comprises an upper shell and a lower shell, the upper shell being connected to and in communication with the lower shell, the upper shell being configured to separate gas from liquid, the lower shell being configured to hold liquid, the lower shell having an inner diameter less than an inner diameter of the upper shell; the feed inlet with go up the barrel and connect, the secondary steam export is established go up the barrel top, discharge gate, circulation liquid import, circulation liquid export all with down the barrel is connected.

3. The flash crystallizer of claim 2, wherein the liquid distribution assembly comprises a liquid distribution tube and a mounting frame, the mounting frame is connected to the inner wall of the shell, the liquid distribution tube is connected to the mounting frame and is connected to and communicated with the feed port, and the liquid outlets are arranged at the lower side of the liquid distribution tube.

4. The flash crystallizer of claim 3, wherein the liquid distribution tubes are arranged in a circular configuration.

5. The flash crystallizer of claim 3, wherein the liquid distribution tubes are arranged in a planar spiral configuration.

6. The flash crystallizer of claim 3, wherein the liquid distribution assembly further comprises a connecting flange, one side of the connecting flange is connected to the liquid distribution pipe, and the other side of the connecting flange is connected to the feed port.

7. The flash crystallizer of claim 2, wherein the shell further comprises two liquid level meter ports, the two liquid level meter ports are respectively disposed on the upper barrel and the lower barrel, and the two liquid level meter ports are respectively connected to two ends of a liquid level meter.

8. The flash crystallizer of claim 2, wherein the upper cylinder further comprises a pressure gauge port for receiving a pressure gauge; the lower barrel is also provided with a thermometer port for mounting a thermometer.

9. The flash crystallizer of claim 2, wherein the bottom of the lower barrel is further provided with a flushing port for flushing the lower barrel.

10. The flash crystallizer of any one of claims 1 to 9, further comprising a baffle plate disposed on a lower side of the secondary vapor outlet and connected to the shell, and a plurality of raised structures connected to a lower side of the baffle plate.