CN217246830U

CN217246830U - Circulation flash evaporation crystallizer

Info

Publication number: CN217246830U
Application number: CN202220957190.6U
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: 2022-04-24
Filing date: 2022-04-24
Publication date: 2022-08-23
Anticipated expiration: 2032-04-24

Abstract

The utility model provides a circulating flash evaporation crystallizer, which comprises a tank body, a circulating liquid outlet pipe, a circulating liquid inlet pipe and a bent pipe; one end of the circulating liquid outlet pipe is connected and communicated with the tank body, and the other end of the circulating liquid outlet pipe is used for being connected with a feed inlet of a circulating pump; one end of the circulating liquid inlet pipe is connected and communicated with the tank body, and the other end of the circulating liquid inlet pipe is connected with a discharge hole of the circulating pump; the bent pipe is arranged in the tank body, one end of the bent pipe is connected and communicated with the circulating liquid outlet pipe, and the other end of the bent pipe is arranged downwards. The utility model provides a circulation flash distillation crystallizer, the crystal breakage rate reduces by a wide margin.

Description

Circulation flash evaporation crystallizer

Technical Field

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

Background

The raw material solution of flash distillation crystallizer mostly relies on the outside heater of device to preheat, then pours into the crystallizer into, after getting into vacuum environment, takes place the flash effect immediately, can take out steam in the twinkling of an eye, just begins the cooling process that continues afterwards, makes solution concentration, cooling and then crystallization, for the misce bene of solution in making the crystallizer, uses the circulating pump to take out the solution of low level from the circulation liquid export usually, pours into the crystallizer into through the import of high level circulation liquid again.

The circulating liquid outlet is generally flush with the shell of the flash evaporation crystallizer, so that a large amount of crystals flow along with the circulating liquid, and the circulating pump impeller rotates quickly to break the crystals, thereby influencing the crystal granularity.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a circulation flash distillation crystallizer aims at solving above-mentioned technical problem.

In order to achieve the above object, the utility model adopts the following technical scheme: there is provided a circulating flash crystallizer comprising:

a tank body;

one end of the circulating liquid outlet pipe is connected and communicated with the tank body, and the other end of the circulating liquid outlet pipe is used for being connected with a feed inlet of a circulating pump;

one end of the circulating liquid inlet pipe is connected and communicated with the tank body, and the other end of the circulating liquid inlet pipe is connected with a discharge hole of the circulating pump;

the bent pipe is arranged in the tank body, one end of the bent pipe is connected and communicated with the circulating liquid outlet pipe, and the other end of the bent pipe is arranged downwards.

In a possible implementation manner, the tank body comprises an upper cylinder body and a lower cylinder body, the upper cylinder body is connected and communicated with the lower cylinder body, the upper cylinder body is used for separating gas from liquid, the lower cylinder body is used for storing liquid, and the inner diameter of the lower cylinder body is smaller than that of the upper cylinder body; the circulating liquid outlet pipe and the circulating liquid inlet pipe are both connected with the lower barrel.

In one possible implementation, the upper portion of the elbow is triangular in cross-section.

In a possible implementation mode, the liquid level meter device further comprises an upper liquid level meter connecting pipe and a lower liquid level meter connecting pipe, wherein the upper liquid level meter connecting pipe is connected with the upper barrel body and communicated with the upper barrel body, the lower liquid level meter connecting pipe is connected with the lower barrel body and communicated with the lower barrel body, and the lower liquid level meter connecting pipe is arranged in an upward inclined mode.

In a possible implementation manner, the device further comprises a feeding pipe, and the feeding pipe is connected with and communicated with the upper barrel.

In a possible implementation manner, the pressure gauge further comprises a pressure gauge connecting pipe, and the pressure gauge connecting pipe is connected with the upper cylinder and used for being connected with the pressure gauge.

In a possible implementation manner, the top of the upper cylinder body is provided with a secondary steam outlet.

In a possible implementation manner, the secondary steam generator further comprises a baffle plate, wherein the baffle plate is arranged on the lower side of the secondary steam outlet and is connected with the inner wall of the upper barrel body.

In a possible implementation manner, the tank further comprises a storage bin, and the storage bin is arranged at the bottom of the lower cylinder and is connected and communicated with the lower cylinder.

In a possible implementation mode, the bottom of the storage bin is provided with a flushing port, and the side surface of the storage bin is provided with a discharge port.

The utility model provides a circulation flash distillation crystallizer's beneficial effect is: compared with the prior art, the utility model provides a circulation flash distillation crystallizer is equipped with circulation drain pipe and circulation feed liquor pipe on the jar body, and the circulation drain pipe is used for being connected with the feed inlet of circulating pump, and circulation feed liquor pipe is used for being connected with the discharge gate of circulating pump to make the internal solution circulation of jar flow, still is equipped with the return bend simultaneously at jar internal, and the one end and the circulation drain pipe of return bend are connected, and the other end sets up down, and the crystal ground paste flows downwards, and the probability of upwards turning over reduces by a wide margin along with the circulation liquid, and the crystal breakage rate reduces by a wide margin.

Drawings

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

fig. 2 is a schematic radial cross-sectional view of a bent pipe in a circulation flash evaporation crystallizer provided by an embodiment of the present invention;

description of reference numerals:

10. an upper cylinder body; 11. a lower cylinder body; 12. a storage bin; 20. circulating the liquid outlet pipe;

21. circulating the liquid inlet pipe; 22. bending the pipe; 30. an upper level gauge connecting pipe;

31. a lower level gauge connecting pipe; 40. a feed pipe; 50. a pressure gauge connecting pipe;

60. a secondary steam outlet; 70. a baffle plate; 80. flushing the opening; 90. and (4) discharging a material outlet.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. 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 fig. 2 together, the circulation flash evaporation crystallizer provided by the present invention will now be described. The circulating flash evaporation crystallizer comprises a tank body, a circulating liquid outlet pipe 20, a circulating liquid inlet pipe 21 and a bent pipe 22; one end of the circulating liquid outlet pipe 20 is connected and communicated with the tank body, and the other end is used for being connected with a feed inlet of a circulating pump; one end of the circulating liquid inlet pipe 21 is connected and communicated with the tank body, and the other end is used for being connected with a discharge hole of the circulating pump; the bent pipe 22 is arranged in the tank body, one end of the bent pipe is connected and communicated with the circulating liquid outlet pipe 20, and the other end of the bent pipe is arranged downwards.

The beneficial effects of the circulation flash evaporation crystallizer provided by the embodiment are as follows: compared with the prior art, the circulation flash evaporation crystallizer that this embodiment provided is equipped with circulation drain pipe 20 and circulation feed liquor pipe 21 on the jar body, circulation drain pipe 20 is used for being connected with the feed inlet of circulating pump, circulation feed liquor pipe 21 is used for being connected with the discharge gate of circulating pump to make the internal solution circulation of jar flow, still be equipped with return bend 22 at jar internal simultaneously, the one end and the circulation drain pipe 20 of return bend 22 are connected, the other end sets up downwards, and the crystal ground paste flows downwards, along with the upward anti-probability reduction by a wide margin of circulation liquid, the crystal breakage rate reduces by a wide margin.

As shown in fig. 1, in a specific embodiment, the tank includes an upper cylinder 10 and a lower cylinder 11, the upper cylinder 10 is connected and communicated with the lower cylinder 11, the upper cylinder 10 is used for gas-liquid separation, the lower cylinder 11 is used for liquid storage, and the inner diameter of the lower cylinder 11 is smaller than that of the upper cylinder 10; the circulating liquid outlet pipe 20 and the circulating liquid inlet pipe 21 are both connected with the lower cylinder body 11.

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 and entrain materials, the requirement for the gas-liquid separation space of the crystallizer is relatively large, the requirement for the liquid storage section is not too high, if the whole flash evaporation crystallizer is designed to be the same diameter, the equipment investment will be increased, and the upper cylinder 10 and the lower cylinder 11 which are different in diameter are arranged on the liquid storage section and the gas-liquid separation section, so that the cost can be saved.

In one embodiment, as shown in fig. 1 and 2, the upper portion of the elbow 22 is triangular in cross-section, and the triangular structure extends to a downward arc on the elbow 22, which effectively prevents crystals from accumulating on the upper side of the elbow 22.

As shown in fig. 1, in a specific embodiment, the liquid level measuring device further includes an upper liquid level measuring device connecting pipe 30 and a lower liquid level measuring device connecting pipe 31, the upper liquid level measuring device connecting pipe 30 is connected to and communicated with the upper cylinder 10, the lower liquid level measuring device connecting pipe 31 is connected to and communicated with the lower cylinder 11, and the lower liquid level measuring device connecting pipe 31 is inclined upward.

What need explain, adopt the double flange level gauge usually during flash distillation crystallizer design, 31 levels of level gauge connecting pipe set up under the double flange, the mouth of pipe is blockked up easily to the crystal, can take place the condition that the crystal blockked up flange under the level gauge, lead to the level measurement inefficacy, some will descend level gauge connecting pipe 31 to design for the boss form, the flange is not installed to the level gauge, only can overhaul the material clearance when the problem appears in level gauge itself like this, can't realize the online maintenance. This device will descend the 30 degrees to 60 degrees of the ascending slope of level gauge connecting pipe 31, avoids the material to pile up, simultaneously, also can locate to add the valve at mouth of pipe and level gauge, realizes that the level gauge overhauls on line.

In a particular embodiment, as shown in fig. 1, a feed tube 40 is further included, the feed tube 40 being connected to and in communication with the upper barrel 10 for feeding the can.

As shown in fig. 1, in a specific embodiment, a pressure gauge connection tube 50 is further included, and the pressure gauge connection tube 50 is connected to the upper cylinder 10 and is used for connecting to a pressure gauge so as to monitor the internal pressure of the tank in real time.

In one embodiment, as shown in fig. 1, the upper cylinder 10 is provided with a secondary steam outlet 60 at the top, and the secondary steam outlet 60 is connected to an external vacuum system for removing secondary steam and maintaining negative pressure inside the tube.

As shown in fig. 1, in a specific embodiment, the steam generator further comprises a baffle plate 70, and the baffle plate 70 is disposed at the lower side of the secondary steam outlet 60 and connected to the inner wall of the upper cylinder 10 to baffle the secondary steam flashed off and reduce entrainment.

In a specific embodiment, as shown in fig. 1, the tank further comprises a storage bin 12, and the storage bin 12 is arranged at the bottom of the lower cylinder 11, connected with and communicated with the lower cylinder 11, and used for storing crystal slurry carrying a large amount of crystals.

As shown in fig. 1, in a specific embodiment, the bottom of the storage bin 12 is provided with a flushing port 80, the side surface is provided with a discharge port 90, a large amount of impurities can be attached to the tank body after long-term use, the tank body needs to be flushed periodically, and the discharge port 90 is used for discharging crystal slurry.

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 circulating flash crystallizer, comprising:

a tank body;

one end of the circulating liquid inlet pipe is connected and communicated with the tank body, and the other end of the circulating liquid inlet pipe is connected with a discharge hole of the circulating pump; and

2. The circulating flash crystallizer of claim 1, wherein the tank comprises an upper barrel and a lower barrel, the upper barrel is connected to and in communication with the lower barrel, the upper barrel is configured to separate gas from liquid, the lower barrel is configured to store liquid, and an inner diameter of the lower barrel is smaller than an inner diameter of the upper barrel; the circulating liquid outlet pipe and the circulating liquid inlet pipe are both connected with the lower barrel.

3. The circulating flash crystallizer of claim 1 wherein the upper portion of the elbow is triangular in cross-section.

4. The circulating flash crystallizer of claim 2, further comprising an upper level gauge connecting tube and a lower level gauge connecting tube, wherein the upper level gauge connecting tube is connected to and in communication with the upper barrel, wherein the lower level gauge connecting tube is connected to and in communication with the lower barrel, and wherein the lower level gauge connecting tube is tilted upward.

5. The circulating flash crystallizer of claim 2, further comprising a feed tube connected to and in communication with the upper barrel.

6. The flash crystallizer of claim 5, further comprising a pressure gauge connection tube connected to the upper barrel for connection to a pressure gauge.

7. The circulating flash crystallizer of claim 2, wherein a secondary vapor outlet is provided at a top of the upper drum.

8. The circulating flash crystallizer of claim 7, further comprising a baffle plate disposed below the secondary vapor outlet and connected to the inner wall of the upper shell.

9. The circulating flash crystallizer of claim 2, wherein the tank further comprises a storage bin disposed at the bottom of the lower barrel and connected to and in communication with the lower barrel.

10. The circulating flash crystallizer of claim 9, wherein the storage bin has a flushing port at the bottom and a discharge port at the side.