CN113521793A - Continuous crystallization separation system for circulating evaporation device - Google Patents
Continuous crystallization separation system for circulating evaporation device Download PDFInfo
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- CN113521793A CN113521793A CN202110907290.8A CN202110907290A CN113521793A CN 113521793 A CN113521793 A CN 113521793A CN 202110907290 A CN202110907290 A CN 202110907290A CN 113521793 A CN113521793 A CN 113521793A
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- 230000008020 evaporation Effects 0.000 title claims abstract description 85
- 238000001704 evaporation Methods 0.000 title claims abstract description 85
- 238000002425 crystallisation Methods 0.000 title claims abstract description 46
- 230000008025 crystallization Effects 0.000 title claims abstract description 46
- 238000000926 separation method Methods 0.000 title claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 96
- 239000002562 thickening agent Substances 0.000 claims abstract description 79
- 239000012452 mother liquor Substances 0.000 claims abstract description 69
- 239000000463 material Substances 0.000 claims abstract description 35
- 238000003756 stirring Methods 0.000 claims description 45
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000010865 sewage Substances 0.000 claims description 5
- 239000006228 supernatant Substances 0.000 claims description 4
- 239000000706 filtrate Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 125000004122 cyclic group Chemical group 0.000 claims 2
- 239000000243 solution Substances 0.000 abstract 4
- 239000010413 mother solution Substances 0.000 abstract 3
- 150000003839 salts Chemical class 0.000 description 9
- 239000013078 crystal Substances 0.000 description 8
- 239000012141 concentrate Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010842 industrial wastewater Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0059—General arrangements of crystallisation plant, e.g. flow sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0063—Control or regulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D2009/0086—Processes or apparatus therefor
Abstract
The invention discloses a continuous crystallization separation system for a circulating evaporation device, and belongs to the technical field of crystallization separation. The continuous crystallization separation system comprises a thickener, a mother liquor tank, a mother liquor pump and a centrifuge, wherein a liquor outlet of the mother liquor tank is respectively connected to a material inlet and an evaporation device of the thickener through the mother liquor pump, an electric control valve controlled by the liquid level of the mother liquor tank is arranged on a connecting pipeline between the mother liquor pump and the evaporation plant, when the centrifuge works, the concentrated solution in the thickener can be sent into the mother liquor tank and is sent into the thickener by the circulating pump of the mother liquor pump, meanwhile, when the concentrated solution in the mother solution tank reaches a certain liquid level height, the concentrated solution in the mother solution tank can be pumped back to the evaporation device by the mother solution pump to participate in secondary evaporation concentration, and then can not influence evaporation plant's normal continuous operation to make centrifuge can continuous operation, can adjust solution output rate according to system operation, equipment is more simplified, has reduced equipment input cost, improves system evaporation crystallization efficiency.
Description
Technical Field
The present invention relates to a crystal separation apparatus, and more particularly, to a continuous crystal separation system for a circulation evaporation apparatus.
Background
In the processes of medicine, chemical industry, petrochemical industry, food and daily chemical production and industrial wastewater recycling, evaporation is an important process, and as an important component in the production process, the evaporation is widely applied to food, petroleum, chemical industry and other related industries. However, the overall technical level of the technologies and equipment in China, such as medicine, chemical engineering, petrifaction and the like, is still different from that of foreign countries, the technologies are basically introduced and imitated to the foreign countries, and the manufacturing technology of the intelligent, efficient and energy-saving evaporation equipment is not comprehensively mastered.
The materials (such as industrial wastewater) subjected to evaporation treatment usually contain various volatile organic matters, evaporated and vaporized solvents (water), inorganic salts and other solutes, the organic matters, the inorganic salts and other substances are separated out by heating in the evaporation process, the organic matters are condensed and liquefied for recovery, and the inorganic salts are crystallized for recovery. In order to fully utilize steam heat energy, multi-effect evaporation is mostly adopted to improve the heat utilization rate at present, and the more evaporators connected in series in a multi-effect evaporation system, the less the unit steam consumption. With the rapid development of the multi-effect evaporation technology, the multi-effect evaporation system is applied more and more in industrial production, the technology is mature more and more, and the production efficiency is greatly improved.
However, the development of the crystallization system matched with the evaporation system is relatively lagged behind, in order to meet the continuous operation of the evaporation system, most of the existing crystallization systems are completed by using a plurality of groups of crystallization kettles and a plurality of groups of centrifuges, the mode is to increase the redundancy of the crystallization system to ensure that the operation of the evaporation system is not influenced, but the working frequency of each crystallization kettle and each centrifuge is not high and the normal operation power of each crystallization kettle and each centrifuge is far from being reached, so that the equipment of the crystallization system is overstaffed, the occupancy rate of the space of the equipment field is increased, and the investment cost of the equipment is increased.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention aims to overcome the defects of complicated equipment, high equipment input cost and the like of a crystallization unit of the conventional evaporation system, and provides a continuous crystallization separation system for a circulating evaporation device, by adopting the technical scheme of the invention, a mother liquid tank, a thickener and the evaporation device are connected through a mother liquid pump, when a centrifugal machine works, concentrated liquid in the thickener can be sent into the mother liquid tank and circularly pumped into the thickener by the mother liquid pump, and simultaneously when the concentrated liquid in the mother liquid tank reaches a certain liquid level height, the concentrated liquid pump in the mother liquid tank can be sent back to the evaporation device by the mother liquid pump to participate in secondary evaporation concentration, so that the normal continuous operation of the evaporation device cannot be influenced, the centrifugal machine can continuously work, the solution output rate can be adjusted according to the operation of the system, the aim of using less equipment to finish more raw material liquid treatment is fulfilled, and the equipment in the whole system is more simplified, the equipment investment cost is reduced, and the evaporation crystallization efficiency of the system is improved.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention relates to a continuous crystallization separation system for a circulating evaporation device, which comprises a thickener, a mother liquor tank, a mother liquor pump and a centrifugal machine, wherein a material inlet of the thickener is connected to a concentrated liquor outlet of the evaporation device, a material outlet of the thickener is connected with a feed inlet of the centrifugal machine through a valve, a filtrate outlet of the centrifugal machine is connected with a liquid inlet of the mother liquor tank through a valve, an overflow port of the thickener is connected with a liquid inlet of the mother liquor tank through a valve, a liquid outlet of the mother liquor tank is respectively connected to the material inlet of the thickener and the evaporation device through the mother liquor pump, and an electric control valve controlled by the liquid level of the mother liquor tank is arranged on a connecting pipeline between the mother liquor pump and the evaporation device.
Furthermore, the material outlet of the thickener is connected with the liquid inlet of the mother liquid tank through a branch with a control valve.
Furthermore, a cyclone is arranged in front of the material inlet of the thickener, a feed inlet of the cyclone is connected with a concentrated solution outlet of the evaporation device, a concentrated solution discharge outlet of the cyclone is connected with the material inlet of the thickener, and a supernatant discharge outlet of the cyclone is connected with a liquid inlet of the mother liquid tank through a valve.
Furthermore, the thickener comprises a thickener body, a top cover, a driving motor, a rotating shaft and stirring blades, wherein the thickener body comprises a straight cylinder section and a conical cylinder section positioned below the straight cylinder section, the top cover is detachably arranged at the top of the straight cylinder section, the driving motor is arranged on the top cover through a support, one end of the rotating shaft is in transmission connection with an output shaft of the driving motor, the other end of the rotating shaft penetrates through the top cover and extends into the conical cylinder section of the thickener body, the stirring blades are detachably arranged at the lower end of the rotating shaft, and the stirring blades are provided with scrapers in clearance fit with the inner wall of the conical cylinder section; the material inlet is arranged on the top cover, the overflow port is arranged on the outer side wall of the upper part of the straight cylinder section of the transformer body, and two material outlets are symmetrically arranged at the bottom of the conical cylinder section of the transformer body.
Furthermore, the bottommost end of the conical cylinder section of the device body is also provided with a sewage discharge outlet, and the outer wall of the straight cylinder section of the device body is also provided with a mounting seat.
Furthermore, the mother liquor tank comprises a tank body, a stirring motor, a stirring shaft and stirring blades, wherein the bottom of the tank body is of a conical structure, the stirring motor is fixed at the top of the tank body through a support, one end of the stirring shaft is in transmission connection with an output shaft of the stirring motor, the other end of the stirring shaft penetrates through the top of the tank body and extends into the bottom of the tank body, and the stirring blades are fixed at the lower end of the stirring shaft; the liquid inlet is arranged on the outer side wall of the upper part of the tank body, and the liquid outlet is arranged at the bottommost part of the tank body.
Furthermore, the top of the tank body is also provided with a vent and a manhole, and the side wall of the tank body is also provided with a sight glass and a liquid level meter port.
Furthermore, the outer side wall of the tank body is at least provided with three support columns along the circumferential direction.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:
(1) the invention relates to a continuous crystallization separation system for a circulating evaporation device, which comprises a thickener, a mother liquor tank, a mother liquor pump and a centrifuge, wherein a liquor outlet of the mother liquor tank is respectively connected to a material inlet of the thickener and the evaporation device through the mother liquor pump, an electric control valve controlled by the liquid level of the mother liquor tank is arranged on a connecting pipeline between the mother liquor pump and the evaporation device, the mother liquor tank is connected with the thickener and the evaporation device through the mother liquor pump, concentrated liquor in the thickener can be sent into the mother liquor tank when the centrifuge works, and is circularly pumped into the thickener through the mother liquor pump, meanwhile, when the concentrated liquor in the mother liquor tank reaches a certain liquid level height, the concentrated liquor pump in the mother liquor tank can be sent back to the evaporation device to participate in secondary evaporation concentration through the mother liquor pump, so that the normal continuous operation of the evaporation device cannot be influenced, the centrifuge can continuously work, and the output rate of the solution can be adjusted according to the operation of the system, the purpose of finishing more raw material liquid treatment by using less equipment is achieved, the equipment in the whole system is simplified, the equipment investment cost is reduced, and the evaporation crystallization efficiency of the system is improved;
(2) according to the continuous crystallization separation system for the circulating evaporation device, the material outlet of the thickener is connected with the liquid inlet of the mother liquid tank through the branch with the control valve, so that concentrated liquid in the thickener can be conveyed into the mother liquid tank by using the branch, the solution output rate of the crystallization separation system can be controlled more conveniently, and a centrifugal machine can run continuously and stably;
(3) according to the continuous crystallization and separation system for the circulating evaporation device, the cyclone is arranged in front of the material inlet of the thickener, the feed inlet of the cyclone is connected with the concentrated solution outlet of the evaporation device, the concentrated solution discharge outlet of the cyclone is connected with the material inlet of the thickener, the supernatant discharge outlet of the cyclone is connected with the liquid inlet of the mother liquid tank through the valve, the concentration of the solution entering the thickener is further improved by using the cyclone, the solution is crystallized and separated out in the thickener conveniently, and the separation efficiency of crystal salt is improved;
(4) the invention relates to a continuous crystallization separation system for a circulating evaporation device, which is characterized in that a thickener comprises a body, a top cover, a driving motor, a rotating shaft and stirring blades, wherein the body comprises a straight cylinder section and a conical cylinder section positioned below the straight cylinder section;
(5) according to the continuous crystallization and separation system for the circulating evaporation device, the bottommost end of the conical barrel section of the thickener is provided with the sewage discharge outlet, and the outer wall of the straight barrel section of the thickener is provided with the mounting seat, so that the thickener can be conveniently mounted and cleaned, and the maintenance of the thickener is convenient;
(6) according to the continuous crystallization and separation system for the circulating evaporation device, the mother liquor tank comprises the tank body, the stirring motor, the stirring shaft and the stirring blades, so that the mother liquor tank can be prevented from being blocked due to crystallization and separation of the concentrated solution in the mother liquor tank, and the normal operation of the mother liquor tank is further ensured.
Drawings
FIG. 1 is a flow diagram of the operation of a continuous crystallization separation system for a circulating evaporation apparatus according to the present invention;
FIG. 2 is a schematic diagram of a thickener in a continuous crystallization separation system for a circulating evaporation apparatus according to the present invention;
FIG. 3 is a schematic diagram showing the structure of a mother liquor tank in a continuous crystallization separation system for a circulating evaporation apparatus according to the present invention.
The reference numerals in the schematic drawings illustrate:
v01, thickener; 1-1, a body; 1-1a, a straight cylinder section; 1-1b, a conical cylinder section; 1-2, a top cover; 1-3, driving a motor; 1-4, a rotating shaft; 1-5, stirring blades; 1-6, material inlet; 1-7, an overflow port; 1-8, material outlet; 1-9 parts of a sewage draining outlet; 1-10, a mounting seat;
v02, mother liquor tank; 2-1, a tank body; 2-2, a stirring motor; 2-3, a stirring shaft; 2-4, stirring blades; 2-5, a support column; 2-6, a liquid inlet; 2-7, a liquid outlet; 2-8, a vent; 2-9, a manhole; 2-10, a sight glass; 2-11, a liquid level meter port;
p01, mother liquor pump; m01, centrifuge; x01, cyclone.
Detailed Description
For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples.
[ examples ]
Referring to fig. 1, a continuous crystallization separation system for a circulation evaporation device in this embodiment includes a thickener V01, a mother liquor tank V02, a mother liquor pump P01 and a centrifuge M01, where material inlets 1-6 of the thickener V01 are connected to a concentrate outlet of the evaporation device, the evaporation device evaporates and concentrates a raw material liquid, the concentrate of the evaporation device enters a thickener V01 for crystallization, material outlets 1-8 of the thickener V01 are connected to a feed inlet of the centrifuge M01 through valves, the thickened concentrate and a crystallized precipitate enter the centrifuge M01 for centrifugal separation, a filtrate outlet of the centrifuge M01 is connected to liquid inlets 2-6 of the mother liquor tank V02 through valves, a solid phase of the centrifuge M01 outputs a solid crystal salt, overflow ports 1-7 of the thickener V01 are connected to liquid inlets 2-6 of the mother liquor tank V02 through valves, the concentrate of the thickener V01 overflows into the mother liquor tank V02, liquid outlets 2-7 of the mother liquor tank V02 are respectively connected to a material inlet 1-6 of the thickener V01 and the evaporation device through a mother liquor pump P01, an electric control valve controlled by the liquid level of the mother liquor tank V02 is arranged on a connecting pipeline between the mother liquor pump P01 and the evaporation device, and meanwhile, a discharge outlet of the mother liquor pump P01 can be connected with a material discharge system through a valve. The mother liquor tank V02 is connected with the thickener V01 and the evaporation device through the mother liquor pump P01, when the centrifuge M01 works, the concentrated liquor in the thickener V01 can be sent into the mother liquor tank V02, and is circularly pumped into the thickener V01 through the mother liquor pump P01, meanwhile, when the concentrated liquor in the mother liquor tank V02 reaches a certain liquid level height, the concentrated liquor in the mother liquor tank V02 can be sent back to the evaporation device to participate in secondary evaporation concentration through the mother liquor pump P01, the normal continuous operation of the evaporation device cannot be influenced, the centrifuge M01 can continuously work, the solution output rate can be adjusted according to the operation of the system, the purpose of completing more raw liquor processing by using less equipment is achieved, the equipment in the whole system is more simplified, the equipment cost is reduced, and the input crystallization efficiency of the evaporation of the system is improved.
As shown in fig. 1, in this embodiment, the material outlet 1-8 of the thickener V01 is connected to the liquid inlet 2-6 of the mother liquid tank V02 by a branch having a control valve, so that the material in the thickener V01 can enter the mother liquid tank V02 without passing through the centrifuge M01, which is more convenient for controlling the solution output rate of the crystallization separation system, and the centrifuge M01 can continuously and stably operate. In addition, a cyclone X01 is arranged in front of a material inlet 1-6 of the thickener V01, a feed inlet of the cyclone X01 is connected with a concentrated solution outlet of the evaporation device, a concentrated solution discharge port of the cyclone X01 is connected with the material inlet 1-6 of the thickener V01, a supernatant discharge port of the cyclone X01 is connected with a liquid inlet 2-6 of a mother liquid tank V02 through a valve, the concentration of a solution entering the thickener V01 is further improved by using the cyclone X01, the solution is convenient to crystallize and separate in the thickener V01, and the separation efficiency of crystal salt is improved.
In order to improve the operation stability of the whole continuous crystallization separation system, the concrete structures of the thickener V01 and the mother liquor tank V02 are also provided in the embodiment. As shown in fig. 2, the thickener V01 in this embodiment includes a body 1-1, a top cover 1-2, a driving motor 1-3, a rotating shaft 1-4 and stirring blades 1-5, the body 1-1 includes a straight cylinder section 1-1a and a conical cylinder section 1-1b located below the straight cylinder section 1-1a, the straight cylinder section 1-1a and the conical cylinder section 1-1b are welded integrally, the top cover 1-2 is detachably mounted on the top of the straight cylinder section 1-1a, the driving motor 1-3 is mounted on the top cover 1-2 through a bracket, one end of the rotating shaft 1-4 is in transmission connection with an output shaft of the driving motor 1-3, the other end of the rotating shaft 1-4 passes through the top cover 1-2 and extends into the conical cylinder section 1-1b of the body 1-1, the stirring blades 1-5 are detachably mounted on the lower end of the rotating shaft 1-4, the stirring blades 1-5 are provided with scrapers which are in clearance fit with the inner walls of the conical cylinder sections 1-1b, and the clearance between the scrapers and the inner walls of the conical cylinder sections 1-1b can be designed to be 30 mm; the material inlet 1-6 is arranged on the top cover 1-2, the overflow port 1-7 is arranged on the outer side wall of the upper part of the straight cylinder section 1-1a of the vessel body 1-1, and the material outlet 1-8 is symmetrically arranged at the bottom of the conical cylinder section 1-1b of the vessel body 1-1. The thickener V01 with the structure can facilitate the precipitation and collection of crystal salt at the bottom, facilitate the solid-liquid separation of the crystal salt conveyed to the centrifuge M01, effectively prevent the crystal salt from crystallizing on the inner wall of the thickener body to block the material outlet 1-8 of the thickener V01, and ensure the normal and stable operation of the thickener V01. In addition, the bottommost end of the conical cylinder section 1-1b of the device body 1-1 is also provided with a sewage discharge outlet 1-9, and the outer wall of the straight cylinder section 1-1a of the device body 1-1 is also provided with a mounting seat 1-10, so that the installation and the cleaning of the thickener V01 can be facilitated, and the maintenance of the thickener V01 is facilitated.
As shown in fig. 3, the mother liquor tank V02 in this embodiment includes a tank 2-1, a stirring motor 2-2, a stirring shaft 2-3 and a stirring blade 2-4, the bottom of the tank 2-1 is a conical structure, the stirring motor 2-2 is fixed on the top of the tank 2-1 through a bracket, one end of the stirring shaft 2-3 is in transmission connection with an output shaft of the stirring motor 2-2, the other end of the stirring shaft 2-3 penetrates through the top of the tank 2-1 and extends into the bottom of the tank 2-1, and the stirring blade 2-4 is fixed on the lower end of the stirring shaft 2-3; the liquid inlet 2-6 is arranged on the outer side wall of the upper part of the tank body 2-1, and the liquid outlet 2-7 is arranged at the bottommost part of the tank body 2-1. The stirring device is arranged in the mother liquor tank V02, so that the concentrated solution can be prevented from crystallizing and separating out in the mother liquor tank V02 to block the mother liquor tank V02, and the normal operation of the mother liquor tank V02 is further ensured. In addition, a vent 2-8 and a manhole 2-9 are further arranged at the top of the tank body 2-1, a viewing mirror 2-10 and a liquid level meter port 2-11 are further arranged on the side wall of the tank body 2-1, the operation of a mother liquid pump P01 and a corresponding valve is controlled through liquid level information obtained by a liquid level meter, when the liquid level in the mother liquid tank V02 is low, the mother liquid pump P01 does not work, when the liquid level in the mother liquid tank V02 is between the low liquid level and the high liquid level, the valve between the mother liquid tank V02 and an evaporation device is closed, the solution in the mother liquid tank V02 is pumped to the thickener V01 by the mother liquid pump P01, the solution in the thickener V01 overflows and flows back to the mother liquid tank V02, and the solution circularly participates in thickening and crystallization of the thickener V01; when the liquid level in the mother liquid tank V02 reaches a high liquid level, a valve between the mother liquid tank V02 and the evaporation device is opened, and the solution in the mother liquid tank V02 is pumped to the evaporation device by a mother liquid pump P01 to participate in secondary evaporation and concentration. In order to facilitate the installation of the mother liquid tank V02, at least three support columns 2-5 are arranged on the outer side wall of the tank body 2-1 along the circumferential direction.
According to the continuous crystallization separation system for the circulating evaporation device, the mother liquid tank is connected with the thickener and the evaporation device through the mother liquid pump, when the centrifugal machine works, the concentrated liquid in the thickener can be sent into the mother liquid tank and is circularly pumped into the thickener through the mother liquid pump, meanwhile, when the concentrated liquid in the mother liquid tank reaches a certain liquid level height, the concentrated liquid in the mother liquid tank can be sent back to the evaporation device through the mother liquid pump to participate in secondary evaporation concentration, so that the normal continuous operation of the evaporation device cannot be influenced, the centrifugal machine can continuously work, the solution output rate can be adjusted according to the operation of the system, the purpose of finishing more raw material liquid processing by using less equipment is achieved, the equipment in the whole system is more simplified, the equipment investment cost is reduced, and the evaporation crystallization efficiency of the system is improved.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (8)
1. A continuous crystallization separation system for a circulating evaporation device comprises a thickener (V01), a mother liquor tank (V02), a mother liquor pump (P01) and a centrifuge (M01), wherein a material inlet (1-6) of the thickener (V01) is connected to a concentrated liquor outlet of the evaporation device, a material outlet (1-8) of the thickener (V01) is connected with a feed inlet of the centrifuge (M01) through a valve, a filtrate outlet of the centrifuge (M01) is connected with a liquid inlet (2-6) of the mother liquor tank (V02) through a valve, an overflow port (1-7) of the thickener (V01) is connected with the liquid inlet (2-6) of the mother liquor tank (V02) through a valve, and the continuous crystallization separation system is characterized in that: the liquid outlet (2-7) of the mother liquor tank (V02) is respectively connected to the material inlet (1-6) of the thickener (V01) and the evaporation device through a mother liquor pump (P01), and an electric control valve controlled by the liquid level of the mother liquor tank (V02) is arranged on a connecting pipeline between the mother liquor pump (P01) and the evaporation device.
2. A continuous crystallization separation system for a circulating evaporation apparatus according to claim 1, wherein: the material outlet (1-8) of the thickener (V01) is connected with the liquid inlet (2-6) of the mother liquid tank (V02) through a branch with a control valve.
3. A continuous crystallization separation system for a circulating evaporation apparatus according to claim 1, wherein: a cyclone (X01) is arranged in front of a material inlet (1-6) of the thickener (V01), a feed inlet of the cyclone (X01) is connected with a concentrated solution outlet of the evaporation device, a concentrated solution discharge outlet of the cyclone (X01) is connected with the material inlet (1-6) of the thickener (V01), and a supernatant discharge outlet of the cyclone (X01) is connected with a liquid inlet (2-6) of a mother liquid tank (V02) through a valve.
4. A continuous crystallization separation system for a cyclic evaporation apparatus according to claim 1, 2 or 3, wherein: the thickener (V01) comprises a thickener body (1-1), a top cover (1-2), a driving motor (1-3), a rotating shaft (1-4) and stirring blades (1-5), wherein the thickener body (1-1) comprises a straight cylinder section (1-1a) and a conical cylinder section (1-1b) positioned below the straight cylinder section (1-1a), the top cover (1-2) is detachably arranged at the top of the straight cylinder section (1-1a), the driving motor (1-3) is arranged on the top cover (1-2) through a bracket, one end of the rotating shaft (1-4) is in transmission connection with an output shaft of the driving motor (1-3), the other end of the rotating shaft (1-4) penetrates through the top cover (1-2) and extends into the conical cylinder section (1-1b) of the thickener body (1-1), the stirring paddle (1-5) is detachably arranged at the lower end of the rotating shaft (1-4), and the stirring paddle (1-5) is provided with a scraper which is in clearance fit with the inner wall of the conical cylinder section (1-1 b); the material inlet (1-6) is arranged on the top cover (1-2), the overflow port (1-7) is arranged on the outer side wall of the upper part of the straight cylinder section (1-1a) of the vessel body (1-1), and the material outlet (1-8) is symmetrically arranged at the bottom of the conical cylinder section (1-1b) of the vessel body (1-1).
5. A continuous crystallization separation system for a circulating evaporation apparatus according to claim 4, wherein: the bottommost end of the conical cylinder section (1-1b) of the device body (1-1) is also provided with a sewage outlet (1-9), and the outer wall of the straight cylinder section (1-1a) of the device body (1-1) is also provided with a mounting seat (1-10).
6. A continuous crystallization separation system for a cyclic evaporation apparatus according to claim 1, 2 or 3, wherein: the mother liquor tank (V02) comprises a tank body (2-1), a stirring motor (2-2), a stirring shaft (2-3) and stirring blades (2-4), wherein the bottom of the tank body (2-1) is of a conical structure, the stirring motor (2-2) is fixed at the top of the tank body (2-1) through a support, one end of the stirring shaft (2-3) is in transmission connection with an output shaft of the stirring motor (2-2), the other end of the stirring shaft (2-3) penetrates through the top of the tank body (2-1) and extends into the bottom of the tank body (2-1), and the stirring blades (2-4) are fixed at the lower end of the stirring shaft (2-3); the liquid inlet (2-6) is arranged on the outer side wall of the upper part of the tank body (2-1), and the liquid outlet (2-7) is arranged at the bottommost part of the tank body (2-1).
7. A continuous crystallization separation system for a circulating evaporation apparatus according to claim 6, wherein: the top of the tank body (2-1) is also provided with a vent (2-8) and a manhole (2-9), and the side wall of the tank body (2-1) is also provided with a sight glass (2-10) and a liquid level meter port (2-11).
8. A continuous crystallization separation system for a circulating evaporation apparatus according to claim 7, wherein: the outer side wall of the tank body (2-1) is provided with at least three support columns (2-5) along the circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110907290.8A CN113521793A (en) | 2021-08-09 | 2021-08-09 | Continuous crystallization separation system for circulating evaporation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110907290.8A CN113521793A (en) | 2021-08-09 | 2021-08-09 | Continuous crystallization separation system for circulating evaporation device |
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| CN113521793A true CN113521793A (en) | 2021-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202110907290.8A Pending CN113521793A (en) | 2021-08-09 | 2021-08-09 | Continuous crystallization separation system for circulating evaporation device |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB670003A (en) * | 1948-05-15 | 1952-04-09 | Int Minerals & Chem Corp | Improvements in or relating to process of producing glutamic acid and the glutamic acid resulting from said process |
| CN204767563U (en) * | 2015-05-29 | 2015-11-18 | 江苏嘉泰蒸发结晶设备有限公司 | Evaporation crystallization equipment of low concentration operation |
| CN204803011U (en) * | 2015-05-20 | 2015-11-25 | 湖北泰盛化工有限公司 | Two water disodium hydrogen phosphate's device is got to sweet phosphine in -process crude salt water extracting of glycine method production grass |
| CN109173324A (en) * | 2018-09-14 | 2019-01-11 | 河北云瑞化工设备有限公司 | A kind of potassium nitrate continuous crystallisation device and method |
| CN208493306U (en) * | 2018-06-11 | 2019-02-15 | 河北乐恒节能设备有限公司 | Thickener |
| CN208626656U (en) * | 2018-06-05 | 2019-03-22 | 江苏昆仲机械有限公司 | Ammonia process of desulfurization ammonium sulfate crystallization apparatus system |
| CN112321046A (en) * | 2020-09-24 | 2021-02-05 | 四川永祥股份有限公司 | Salt recovery system for light brine and concentrated mother liquor |
| CN213313388U (en) * | 2020-09-01 | 2021-06-01 | 河北明吉化工科技有限公司 | High-efficient zinc sulfate MVR evaporates crystallization device in succession |
-
2021
- 2021-08-09 CN CN202110907290.8A patent/CN113521793A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB670003A (en) * | 1948-05-15 | 1952-04-09 | Int Minerals & Chem Corp | Improvements in or relating to process of producing glutamic acid and the glutamic acid resulting from said process |
| CN204803011U (en) * | 2015-05-20 | 2015-11-25 | 湖北泰盛化工有限公司 | Two water disodium hydrogen phosphate's device is got to sweet phosphine in -process crude salt water extracting of glycine method production grass |
| CN204767563U (en) * | 2015-05-29 | 2015-11-18 | 江苏嘉泰蒸发结晶设备有限公司 | Evaporation crystallization equipment of low concentration operation |
| CN208626656U (en) * | 2018-06-05 | 2019-03-22 | 江苏昆仲机械有限公司 | Ammonia process of desulfurization ammonium sulfate crystallization apparatus system |
| CN208493306U (en) * | 2018-06-11 | 2019-02-15 | 河北乐恒节能设备有限公司 | Thickener |
| CN109173324A (en) * | 2018-09-14 | 2019-01-11 | 河北云瑞化工设备有限公司 | A kind of potassium nitrate continuous crystallisation device and method |
| CN213313388U (en) * | 2020-09-01 | 2021-06-01 | 河北明吉化工科技有限公司 | High-efficient zinc sulfate MVR evaporates crystallization device in succession |
| CN112321046A (en) * | 2020-09-24 | 2021-02-05 | 四川永祥股份有限公司 | Salt recovery system for light brine and concentrated mother liquor |
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Application publication date: 20211022 |