CN212282904U

CN212282904U - Crystallization evaporator anti-blocking pipe

Info

Publication number: CN212282904U
Application number: CN202020986100.7U
Authority: CN
Inventors: 萧芳妙
Original assignee: Zhejiang Vnor Environmental Protection Technology Co ltd
Current assignee: Zhejiang Vnor Environmental Protection Technology Co ltd
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2021-01-05
Anticipated expiration: 2030-06-02

Abstract

The utility model discloses a crystallization evaporator prevents stifled pipe, including thick cauldron, one imitate the heater and one imitate the separator, the top intercommunication of thick cauldron has the swirler, one imitates the bottom of heater and is provided with one and imitates the forced circulation pump, one imitates the top of heater and communicates in the left bottom of an effect separator through the pipeline, one imitates the top of separator and is provided with the purge valve. The utility model discloses a thick cauldron, the swirler, one imitates the heater, the forced pipe, one imitates the separator, the draft tube, the leg of salting out is from circulation system, the densimeter, the circulation discharge pump, the clear water advances the pipe, the back flush valve, an effect forced circulation pump and pressure sensor's cooperation is used, the in-process of having solved current crystallization evaporator pipeline and using, its inside can deposit the microcrystal, long-time accumulation can lead to the jam of pipeline, and simultaneously, artifical ejection of compact operation is improper also can cause the jam of pipeline, thereby influence the problem of the normal work of crystallization evaporator.

Description

Crystallization evaporator anti-blocking pipe

Technical Field

The utility model relates to a crystallization evaporator technical field specifically is a crystallization evaporator prevents stifled pipe.

Background

The evaporative crystallizer uses the evaporation of part of the solvent to reach the supersaturation degree of the solution, which makes the principle and structure very similar to the evaporator used for the concentration of the common feed liquid, and the common evaporator can allow the solid matter to precipitate in the operation process, but the effective control of the grain classification is difficult to realize, so the evaporative crystallizer and the common evaporator are often distinguished.

The existing crystallization evaporator pipeline deposits micro-crystals in the use process, the pipeline is blocked due to long-time accumulation, and meanwhile, the pipeline is blocked due to improper manual discharging operation, so that the normal work of the crystallization evaporator is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a crystallization evaporator prevents stifled pipe possesses the advantage that can prevent the pipeline jam, has solved current crystallization evaporator pipeline at the in-process that uses, and its inside can deposit the micro crystal, and long-time accumulation can lead to the jam of pipeline, and simultaneously, artifical ejection of compact operation is improper also can lead to the jam of pipeline to influence the problem of the normal work of crystallization evaporator.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a crystallization evaporator prevents stifled pipe, includes thick cauldron, one imitates heater and one imitates the separator, the top intercommunication of thick cauldron has the swirler, the bottom of one imitate the heater is provided with one and imitates the forced circulation pump, the top of one imitate the heater is passed through the pipeline and is linked together in the left bottom of one imitate the separator, the top of one imitate the separator is provided with the cleaning valve, the bottom intercommunication of one imitate the separator has the draft tube, the left top intercommunication of draft tube has the forced circulation pipe, the bottom intercommunication of draft tube has the leg of salting out from circulation system, the leg of salting out is provided with the circulation discharge pump from the bottom of circulation system, the inlet of circulation discharge pump communicates in the leg of salting out from the bottom of circulation system, the outlet of circulation discharge pump communicates in the leg of salting out from the right side of circulation system.

Preferably, the inlet end of the first-effect forced circulation pump is communicated with the bottom of the first-effect heater, and the outlet end of the first-effect forced circulation pump is communicated with one end of the forced pipe, which is far away from the guide cylinder.

Preferably, one end of the cleaning valve, which is far away from the single-effect separator, is communicated with a demister.

Preferably, the inlet end of the circulating discharge pump is communicated with the bottom of the salting-out leg self-circulation system through a back washing pipe, the bottom of one side of the back washing pipe, which is close to the circulating discharge pump, is communicated with a clean water inlet pipe, and a back washing valve is fixedly mounted on the surface of the clean water inlet pipe.

Preferably, the outlet end of the circulating discharge pump is communicated with the right side of the salting-out leg self-circulation system through a water return pipe, the right side of one side, close to the circulating discharge pump, of the water return pipe is communicated with a second backwashing pipe, the surface, close to one side of the circulating discharge pump, of the second backwashing pipe is communicated with a second water inlet valve, one end, far away from the water return pipe, of the second backwashing pipe is communicated with the right side of the cyclone, the top of the cyclone is communicated with a third backwashing pipe, one end, far away from the cyclone, of the third backwashing pipe is communicated with the right side of the guide cylinder, and the surface, close to one side of the guide cylinder, of the third backwashing pipe.

Preferably, a densimeter is fixedly mounted in an inner cavity of the forced pipe, the surface of the water return pipe is respectively communicated with a sampling valve and a self-circulation regulating valve, a pressure sensor is fixedly mounted at the bottom of the right side of the first-effect heater, and a pressure detector and a temperature detector are respectively and fixedly mounted at the middle end of the right side of the first-effect heater.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a thick cauldron, the swirler, one imitates the heater, the forced pipe, the purge valve, one imitates the separator, the draft tube, water intaking valve one, the bleeder valve, the leg of salting out is from circulation system, the densimeter, the sampling valve, water intaking valve two, the circulation discharge pump, the clear water advances the pipe, the back flush valve, the cooperation of an effect forced circulation pump and pressure sensor is used, possess the advantage that can prevent the pipe blockage, the in-process of having solved current crystallization evaporimeter pipeline and using, its inside can deposit the micro-crystal, long-time accumulation can lead to the jam of pipeline, and simultaneously, artifical ejection of compact operation is improper also can lead to the jam of pipeline, thereby influence the problem of the normal work of crystallization evaporimeter.

2. The utility model discloses a setting up one and imitateing separator and draft tube, can realizing the separation of clear turbid liquid, avoid the crystal to get into the heat exchange tube and provide preliminary assurance, through setting up the forced pipe, can avoid the crystal to get into the heat exchange tube, stop the heat exchange tube and block up the problem, through setting up salting out leg self-circulation system and circulation discharge pump, can make the crystal that the crystallization came out and the mother liquor that accompanies keep circulating constantly, avoid the crystal deposit to block up discharge pipeline.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: the device comprises a thick kettle 1, a cyclone 2, a first-effect heater 3, a forced pipe 4, a cleaning valve 5, a first-effect separator 6, a guide cylinder 7, a first inlet valve 8, a first outlet valve 9, a self-circulation system of a salting-out leg 10, a densimeter 11, a sampling valve 12, a second inlet valve 13, a circulating outlet pump 14, a clear water inlet pipe 15, a back flush valve 16, a forced circulation pump 17 and a pressure sensor 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to be referred must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "connected", and the like are to be construed broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, a crystallization evaporator anti-blocking pipe comprises a thick kettle 1, an effective heater 3 and an effective separator 6, the top of the thick kettle 1 is communicated with a cyclone 2, the bottom of the effective heater 3 is provided with an effective forced circulation pump 17, the inlet end of the effective forced circulation pump 17 is communicated with the bottom of the effective heater 3, the outlet end of the effective forced circulation pump 17 is communicated with one end of a forced pipe 4 far away from a guide cylinder 7, the top of the effective heater 3 is communicated with the bottom of the left side of the effective separator 6 through a pipeline, the separation of clear liquid and turbid liquid can be realized by arranging the effective separator 6 and the guide cylinder 7 to avoid the crystal from entering a heat exchange pipe to provide primary guarantee, the top of the effective separator 6 is provided with a cleaning valve 5, one end of the cleaning valve 5 far away from the effective separator 6 is communicated with a demister, the bottom of the effective separator 6 is communicated with the guide cylinder 7, the top of the left side of the guide cylinder 7 is communicated with the forced pipe 4, the bottom of the draft tube 7 is communicated with a salting-out leg self-circulation system 10, the salting-out leg self-circulation system 10 is provided with a circulation discharge pump 14 from the bottom of the circulation system 10, the crystallized crystals and the accompanying mother liquor can keep circulating constantly and avoid crystal deposition from blocking a discharge pipeline by arranging the salting-out leg self-circulation system 10 and the circulation discharge pump 14, the inlet end of the circulation discharge pump 14 is communicated with the bottom of the salting-out leg self-circulation system 10, the outlet end of the circulation discharge pump 14 is communicated with the right side of the salting-out leg self-circulation system 10, the inlet end of the circulation discharge pump 14 is communicated with the bottom of the salting-out leg self-circulation system 10 through a back flushing pipe, the bottom of one side of the back flushing pipe close to the circulation discharge pump 14 is communicated with a clear water inlet pipe 15, and the surface of the clear water inlet pipe 15 is fixedly provided with a back flushing valve 16, the outlet end of the circulating discharge pump 14 is communicated with the right side of the salting-out leg self-circulation system 10 through a water return pipe, the right side of the water return pipe close to the circulating discharge pump 14 is communicated with a back flushing pipe II, the surface of the back flushing pipe II close to the circulating discharge pump 14 is communicated with a water inlet valve II 13, one end of the back flushing pipe II far away from the water return pipe is communicated with the right side of the swirler 2, the top of the swirler 2 is communicated with a back flushing pipe III, one end of the back flushing pipe III far away from the swirler 2 is communicated with the right side of the guide cylinder 7, the surface of the back flushing pipe III close to the guide cylinder 7 is respectively communicated with a water inlet valve I8 and a discharge valve 9, the inner cavity of the forcing pipe 4 is fixedly provided with a densimeter 11, the surface of the water return pipe is respectively communicated with a sampling valve 12 and a self-circulation regulating valve, the bottom of the right side of the first effect heater 3 is, the thick kettle 1, the cyclone 2, the one-effect heater 3, the forcing pipe 4, the cleaning valve 5, the one-effect separator 6, the guide cylinder 7, the first water inlet valve 8, the discharge valve 9, the salting-out leg self-circulation system 10, the densimeter 11, the sampling valve 12, the second water inlet valve 13, the circulation discharge pump 14, the clear water inlet pipe 15, the back flush valve 16, the one-effect forcing circulation pump 17 and the pressure sensor 18 are used in a matched mode, the advantage that pipeline blockage can be prevented is achieved, the problems that micro crystals can be deposited in the existing crystallization evaporator pipeline in the using process, the pipeline can be blocked due to long-time accumulation, meanwhile, the pipeline can be blocked due to improper manual discharging operation, and normal operation of the crystallization evaporator is affected are solved.

When the device is used, the one-effect separator 6 and the guide cylinder 7 are arranged, heated solution is evaporated in the one-effect separator 6 and is supersaturated, supersaturated solution can be continuously evaporated and concentrated to separate out crystals, the guide cylinder 7 can carry out hydraulic classification on solution with the crystals, the crystals are arranged below, clear liquid is arranged above, the crystals can be settled from the bottom of the guide cylinder 7 to the bottom of the salting-out leg self-circulation system 10, the clear liquid is effectively separated in the one-effect separator 6 by arranging the forced pipe 4 and the guide cylinder 7, the upper layer is clear liquid, the outlet height of the forced pipe 4 is determined by calculation, so that the settlement of the crystals cannot be influenced by the suction force of the one-effect forced circulation pump 17, the crystals can be prevented from entering the heat exchange pipe, the problem of blockage of the heat exchange pipe is solved, and the crystallized crystals and accompanying mother liquor can be kept in circulation constantly by arranging the salting-out leg self-circulation system 10 and the circulation discharge pump 14, The discharge pipeline is prevented from being blocked by crystal deposition, a back flushing system of a pipeline of a circulating discharge pump 14 can be added by arranging a first back flushing pipeline, a second back flushing pipeline and a third back flushing pipeline, the pipeline blockage caused by the deposition and accumulation of micro-crystals in the pipeline (for example, the discharge circulating pipeline is blocked due to improper discharge operation, the pipeline can be dredged by an online back flushing system without stopping the machine), the concentration is set to be 1:4 or 1:5 (thinner concentration is used for reducing the risk of pipe blockage) in the equipment by the design of a swirler 2, then the solid-liquid ratio is set to be 1:2 or even 1:1 when the solid-liquid reaches a thick kettle 1 by the thickening of the swirler 2 (so that the mother liquid amount of the centrifuge is greatly reduced, on one hand, the work load of the centrifuge is reduced, and on the other hand, the amount of the mother liquid is less, the heat quantity is, the density is detected by a densimeter 11, when the discharging density is reached, the opening degree of a self-circulation regulating valve is regulated from 100% to 30% (the purpose of a switch valve for the self-circulation pipeline is realized, the self-circulation pipeline is enabled to flow all the time, the crystal is prevented from being settled to cause pipe blockage), simultaneously, a discharge valve 9 and a water inlet valve II 13 are opened to carry out discharging operation, when the discharging is finished, the discharge valve 9 and the water inlet valve II 13 are closed, the self-circulation regulating valve is re-opened to 100% (a water inlet valve I8 is automatically opened, pipeline washing is carried out through cleaning water or pretreated materials, the deposition of trace crystals in the pipeline is avoided, the pipeline is prevented from being blocked due to accumulation), during debugging, the discharging density is.

In summary, the following steps: the anti-blocking pipe of the crystallization evaporator solves the problems that the pipeline of the existing crystallization evaporator can be blocked due to the deposition of micro-crystals in the pipeline and the long-time accumulation of the micro-crystals can cause the blockage of the pipeline, and meanwhile, the pipeline can be blocked due to improper manual discharging operation, so that the normal work of the crystallization evaporator is influenced, through the matched use of the thick kettle 1, the cyclone 2, the one-effect heater 3, the forcing pipe 4, the cleaning valve 5, the one-effect separator 6, the guide cylinder 7, the first water inlet valve 8, the discharge valve 9, the salting-out leg self-circulation system 10, the densimeter 11, the sampling valve 12, the second water inlet valve 13, the circulation discharge pump 14, the clear water inlet pipe 15, the back flush valve 16, the one-effect forcing circulation pump 17 and the pressure sensor 18.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a crystallization evaporator prevents stifled pipe, includes thick cauldron (1), an effect heater (3) and an effect separator (6), its characterized in that: the top of the thick kettle (1) is communicated with a cyclone (2), the bottom of the first-effect heater (3) is provided with a first-effect forced circulation pump (17), the top of the first-effect heater (3) is communicated with the bottom of the left side of the first-effect separator (6) through a pipeline, the top of the first-effect separator (6) is provided with a cleaning valve (5), the bottom of the first-effect separator (6) is communicated with a guide cylinder (7), the top of the left side of the guide shell (7) is communicated with a forced pipe (4), the bottom of the guide shell (7) is communicated with a salting-out leg self-circulation system (10), a circulating discharge pump (14) is arranged at the bottom of the salting-out leg self-circulating system (10), the inlet end of the circulating discharge pump (14) is communicated with the bottom of the salting-out leg self-circulation system (10), the outlet end of the circulating discharge pump (14) is communicated with the right side of the salting-out leg self-circulation system (10).

2. A crystallization evaporator anti-clogging tube according to claim 1, characterized in that: the inlet end of the first-effect forced circulation pump (17) is communicated with the bottom of the first-effect heater (3), and the outlet end of the first-effect forced circulation pump (17) is communicated with one end of the forced pipe (4) far away from the guide shell (7).

3. A crystallization evaporator anti-clogging tube according to claim 1, characterized in that: and one end of the cleaning valve (5) far away from the one-effect separator (6) is communicated with a demister.

4. A crystallization evaporator anti-clogging tube according to claim 1, characterized in that: the inlet end of the circulating discharge pump (14) is communicated with the bottom of the salting-out leg self-circulation system (10) through a back-flushing pipe, the bottom of one side, close to the circulating discharge pump (14), of the back-flushing pipe is communicated with a clean water inlet pipe (15), and a back-flushing valve (16) is fixedly mounted on the surface of the clean water inlet pipe (15).

5. A crystallization evaporator anti-clogging tube according to claim 1, characterized in that: the outlet end of the circulating discharge pump (14) is communicated with the right side of the salting-out leg self-circulation system (10) through a water return pipe, the right side of one side, close to the circulating discharge pump (14), of the water return pipe is communicated with a back flushing pipe II, the surface, close to one side of the circulating discharge pump (14), of the back flushing pipe II is communicated with a water inlet valve II (13), one end, far away from the water return pipe, of the back flushing pipe II is communicated with the right side of the swirler (2), the top of the swirler (2) is communicated with a back flushing pipe III, one end, far away from the swirler (2), of the back flushing pipe III is communicated with the right side of the guide cylinder (7), and the surface, close to one side of the guide cylinder (7), of the back flushing pipe III is communicated with.

6. The crystallization evaporator blockage prevention pipe according to claim 5, wherein: the inner cavity of the forced pipe (4) is fixedly provided with a densimeter (11), the surface of the water return pipe is respectively communicated with a sampling valve (12) and a self-circulation regulating valve, the bottom on the right side of the first-effect heater (3) is fixedly provided with a pressure sensor (18), and the middle end on the right side of the first-effect heater (3) is respectively and fixedly provided with a pressure detector and a temperature detector.