CN214512805U - Potassium chloride evaporation crystallization device - Google Patents
Potassium chloride evaporation crystallization device Download PDFInfo
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- CN214512805U CN214512805U CN202120268047.1U CN202120268047U CN214512805U CN 214512805 U CN214512805 U CN 214512805U CN 202120268047 U CN202120268047 U CN 202120268047U CN 214512805 U CN214512805 U CN 214512805U
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Abstract
The utility model provides a potassium chloride evaporation crystallization device, belongs to evaporation crystallization device technical field, including raw water separator, forced circulation vaporization system, forced circulation cooling system. This device carries out circulation evaporation and separation to potassium chloride solution through forced circulation evaporating system, improves the evaporation efficiency, the increase salt solution handling capacity, set up forced circulation cooling system and circulate the cooling to the high temperature saturated salt solution that forms in the forced separator, the separation, thereby avoid the crystal caking to block up the pipeline, forced circulation evaporating system and forced circulation cooling system's operation and cooperation promote the evaporation crystallization efficiency for the salt solution handling capacity is big-amplitude to be improved, the stability of reinforcing device operation.
Description
Technical Field
The utility model belongs to the technical field of the evaporation crystallization device, concretely relates to potassium chloride evaporation crystallization device.
Background
Can produce potassium chloride solution during industrial production dimethyl ether, potassium chloride solution retrieves through the evaporation crystallization, and present potassium chloride evaporation crystallization generally adopts the MVR evaporimeter, and in the actual motion in-process, the solution after the heating gets into the separator and separates, and the frequent potassium chloride caking condition that appears in the separator, ejection of compact pipeline frequently blocks up, and the system mediation and wash frequency are great, lead to potassium chloride evaporation efficiency low, and the system's handling capacity is few.
Disclosure of Invention
In view of this, it is necessary to provide a potassium chloride evaporation crystallization apparatus to solve the problems of low potassium chloride evaporation efficiency and low system throughput caused by frequent potassium chloride caking in the separator, frequent blockage of the discharge pipeline, and large system dredging and cleaning frequency during potassium chloride evaporation crystallization.
A potassium chloride evaporative crystallization device comprises:
a raw water separator for performing preliminary separation of raw brine;
the inlet of the forced circulation evaporation module is connected with the outlet of the raw water separator and is used for evaporating and concentrating the raw salt water; and the inlet of the forced circulation cooling module is connected with the outlet of the forced circulation evaporation module and is used for cooling and crystallizing the concentrated raw brine.
Preferably, the forced circulation evaporation module comprises a first heater, a second heater, a forced separator and a heating circulation pump, the discharge port of the raw water separator is connected with the material inlet of the first heater, the material outlet of the first heater is connected with the inlet of the forced separator, the lower end of the forced separator is connected with the second heater, and the heating circulation pump is arranged between the first heater and the second heater.
Preferably, the forced circulation cooling module comprises a forced cooling separator, a forced cooler and a cooling circulation pump; the upper end of the forced cooling separator is connected with the upper end of the forced cooler, and the cooling circulating pump is arranged between the forced cooling separator and the forced cooler.
Preferably, the potassium chloride evaporative crystallization device further comprises a discharge pump, wherein the discharge pump is arranged between the forced separator and the forced cooling separator and used for pumping out the thick liquid in the forced separator.
Preferably, the potassium chloride evaporative crystallization device further comprises a thickener, and an inlet of the thickener is connected with a lower end outlet of the forced cooling separator and is used for concentrating the solid-containing suspended materials from the forced cooling separator.
Preferably, the potassium chloride evaporative crystallization device further comprises a centrifuge, wherein an inlet of the centrifuge is connected with an outlet of the thickener and is used for centrifugally separating solid-containing suspended materials from the thickener to obtain solid salt.
The utility model adopts the above technical scheme, its beneficial effect lies in: the raw brine is primarily separated in the raw water separator, the separated raw brine enters the forced circulation evaporation module for evaporation and concentration, the concentrated solution enters the forced circulation cooling module for cooling and crystallization, and crystals separated out by cooling and crystallization are crystal water, so that the phenomenon of crystal agglomeration cannot occur. The forced circulation cooling module prevents the high-temperature saturated brine from caking due to overhigh temperature when crystals are separated out, so that the pipeline is blocked, the cleaning frequency is reduced, continuous crystallization separation is realized, and the purpose of stable production of the evaporation crystallization device is achieved.
Drawings
FIG. 1 is a schematic structural diagram of an evaporative potassium chloride crystallization apparatus.
In the figure: the device comprises a raw water separator 100, a forced circulation evaporation module 200, a forced circulation cooling module 300, a discharging pump 400, a thickener 500, a centrifuge 600, a first heater 210, a second heater 220, a forced separator 230, a heating circulating pump 240, a forced cooling separator 310, a forced cooler 320 and a cooling circulating pump 330.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Referring to fig. 1, an embodiment of the present invention provides a potassium chloride evaporative crystallization apparatus, including:
the device comprises a raw water separator 100, a forced circulation evaporation module 200 and a forced circulation cooling module 300, wherein the inlet of the forced circulation evaporation module 200 is connected with the outlet of the raw water separator 100, and the outlet of the forced circulation evaporation module 200 is connected with the inlet of the forced circulation cooling module 300.
The raw salt water is primarily separated in the raw water separator 100, the separated raw water enters the forced circulation evaporation module 200 for evaporation and concentration, the concentration is concentrated to a certain concentration, if the concentration of the saturated solution at the temperature is high, the concentrated solution enters the forced circulation cooling module 300 again, and the thick liquid with the crystal water is obtained through cooling and crystallization, so that the phenomenon that the crystals are agglomerated due to direct evaporation and crystallization of the crystals to block the pipeline is avoided.
Further, the forced circulation evaporation module 100 includes a first heater 210, a second heater 220, a forced separator 230, and a heating circulation pump 240; the raw water separator 100 has a discharge port connected to a material inlet of the first heater 210, a material outlet of the first heater 210 connected to an inlet of the forced separator 230, a lower end of the forced separator 230 connected to an inlet of the second heater 220, and the heating circulation pump 240 installed between the first heater 210 and the second heater 220. The first heater 210 is used for heating the raw brine, the heated brine is separated in the forced separator 230 to obtain high-temperature saturated brine with a small amount of solid salt and mother liquor, the mother liquor is continuously concentrated by the second heater 220 and enters the first heater 210 through the heating circulating pump 240, so that circulating evaporation is formed, and the evaporation crystallization efficiency and the raw brine treatment capacity are improved.
Further, the forced circulation cooling module 300 includes a forced cooling separator 310, a forced cooler 320, and a cooling circulation pump 330; the upper end of the forced cooling separator 310 is connected to the upper end of the forced cooler 320, and the cooling circulation pump 330 is disposed between the forced cooling separator 310 and the forced cooler 320. The saturated solution with a small amount of solid salt at the upper part of the forced cooling separator 310 enters a forced cooler 320 for cooling, the cooled salt solution enters the forced cooling separator 310 again under the action of a cooling circulating pump 330, meanwhile, new high-temperature saturated brine flowing out of the forced separator 230 continuously enters the forced cooling separator 310, the cooled salt solution exchanges heat with the new high-temperature saturated brine to reduce the temperature of the high-temperature saturated brine, the mixed salt solution is separated in the forced cooling separator 230, so that crystals are separated out after the high-temperature saturated potassium chloride solution is cooled, and the phenomenon that the temperature is too high to form blocky crystals and block pipelines is avoided.
Furthermore, the potassium chloride evaporative crystallization device further comprises a discharge pump 400, wherein the discharge pump 400 is arranged between the forced separator 230 and the forced cooling separator 310, and the discharge pump is used for pumping out the thick liquid in the forced separator 230.
Further, the potassium chloride evaporative crystallization device further comprises a thickener 500, an inlet of the thickener 500 is connected with an outlet at the lower end of the forced cooling separator 320, and the thickener 500 is used for concentrating the solid-containing suspended materials from the forced cooling separator 310.
Further, the potassium chloride evaporative crystallization device further comprises a centrifuge 600, an inlet of the centrifuge 600 is connected with an outlet of the thickener 500, and the centrifuge 600 is used for centrifugally separating the solid-containing suspended materials from the thickener 500 to obtain solid salt.
When the device is used specifically, in the process of producing diphenyl ether, the generated potassium chloride solution enters the raw water separator 100 firstly, primary separation is carried out, the potassium chloride solution flowing out of the outlet of the raw water separator 100 enters the first heater 210, through heating evaporation, the evaporated potassium chloride concentrated solution enters the forced separator 230 for crystallization separation, the high-temperature saturated potassium chloride solution with a small amount of solids at the upper part of the forced separator 230 is pumped out by the discharging pump 400 to enter the forced cooling separator 310, the mother liquor at the lower part of the forced separator 230 enters the second heater 220 for heating concentration, the heated and concentrated solution enters the first heater 210 again under the action of the heating circulating pump 240 for heating evaporation, the evaporated potassium chloride saturated solution is subjected to recrystallization separation in the forced separator 230, and the heating evaporation cycle is formed in a reciprocating manner. The high-temperature saturated solution with a small amount of solid potassium chloride on the upper part of the forced separator 230 enters the cooling circulation system 300, first reaches the forced cooling separator 310 for preliminary separation, the potassium chloride solution with a small amount of solid on the upper part of the forced cooling separator 310 enters the forced cooler 320 for cooling to obtain a low-temperature potassium chloride solution, the low-temperature potassium chloride solution enters the forced cooling separator 310 again under the action of the cooling circulation pump 330, meanwhile, the high-temperature saturated potassium chloride solution pumped out of the forced separator 230 by the discharge pump 400 enters the forced cooling separator 310, the low-temperature potassium chloride solution exchanges heat with the high-temperature saturated potassium chloride solution to reduce the temperature of the high-temperature saturated potassium chloride solution entering the forced cooling separator 310, and the high-temperature saturated potassium chloride is prevented from forming block-shaped solid during crystallization in the forced cooling separator 310 due to high temperature to cause pipeline blockage, and the saturated potassium chloride with a large amount of solid at the bottom of the forced separator 310 enters the thickener 500 for sedimentation, and a large amount of solid potassium chloride at the bottom of the thickener 500 enters the centrifuge for separation 600 to separate the finished product potassium chloride. The forced circulation evaporation module 200 is formed by the first heater 210, the second heater 220 and the forced separator 230, the evaporation efficiency is enhanced, the brine treatment capacity is improved, the cooling circulation system 300 is formed by the forced cooling separator 310, the forced cooler 320 and the cooling circulation pump 330, so that crystals are separated out after the high-temperature saturated potassium chloride solution is cooled, the phenomenon that blocky crystals are formed due to overhigh temperature and the pipelines are blocked is avoided, the solid salting-out amount is increased due to the circulation and the matching of the forced circulation evaporation module 200 and the cooling circulation system 300, and the continuous crystallization separation is realized.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (6)
1. An evaporative crystallization device for potassium chloride, which is characterized by comprising:
a raw water separator for performing preliminary separation of raw brine;
the inlet of the forced circulation evaporation module is connected with the outlet of the raw water separator and is used for evaporating and concentrating the raw salt water; and
and the inlet of the forced circulation cooling module is connected with the outlet of the forced circulation evaporation module and is used for cooling and crystallizing the concentrated raw brine.
2. The evaporative crystallization apparatus for potassium chloride as set forth in claim 1, wherein: the forced circulation evaporation module comprises a first heater, a second heater, a forced separator and a heating circulating pump; the raw water separator is characterized in that a discharge port of the raw water separator is connected with a material inlet of the first heater, a material outlet of the first heater is connected with an inlet of the forced separator, the lower end of the forced separator is connected with the second heater, and the heating circulating pump is installed between the first heater and the second heater.
3. The evaporative crystallization apparatus for potassium chloride as set forth in claim 1, wherein: the forced circulation cooling module comprises a forced cooling separator, a forced cooler and a cooling circulating pump; the upper end of the forced cooling separator is connected with the upper end of the forced cooler, and the cooling circulating pump is arranged between the forced cooling separator and the forced cooler.
4. The evaporative crystallization apparatus for potassium chloride as set forth in claim 1, wherein: the discharging pump is arranged between the forced separator and the forced cooling separator and used for pumping out thick liquid in the forced separator.
5. The evaporative crystallization apparatus for potassium chloride as set forth in claim 4, wherein: the device also comprises a thickener, wherein an inlet of the thickener is connected with a lower end outlet of the forced cooling separator and is used for concentrating the solid-containing suspended materials from the forced cooling separator.
6. The evaporative crystallization apparatus for potassium chloride as set forth in claim 5, wherein: the solid salt production device further comprises a centrifugal machine, wherein an inlet of the centrifugal machine is connected with an outlet of the thickener and used for centrifugally separating solid-containing suspended materials from the thickener to obtain solid salt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120268047.1U CN214512805U (en) | 2021-01-30 | 2021-01-30 | Potassium chloride evaporation crystallization device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120268047.1U CN214512805U (en) | 2021-01-30 | 2021-01-30 | Potassium chloride evaporation crystallization device |
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| Publication Number | Publication Date |
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| CN214512805U true CN214512805U (en) | 2021-10-29 |
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| CN202120268047.1U Active CN214512805U (en) | 2021-01-30 | 2021-01-30 | Potassium chloride evaporation crystallization device |
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2021
- 2021-01-30 CN CN202120268047.1U patent/CN214512805U/en active Active
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