CN214680125U - Continuous crystallizer - Google Patents
Continuous crystallizer Download PDFInfo
- Publication number
- CN214680125U CN214680125U CN202022963667.5U CN202022963667U CN214680125U CN 214680125 U CN214680125 U CN 214680125U CN 202022963667 U CN202022963667 U CN 202022963667U CN 214680125 U CN214680125 U CN 214680125U
- Authority
- CN
- China
- Prior art keywords
- chamber
- negative pressure
- crystallization chamber
- crystallization
- crystallizer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model discloses a continuous crystallizer, which comprises a negative pressure evaporation chamber and a crystallization chamber; the negative pressure evaporation chamber is arranged above the crystallization chamber, the top of the negative pressure evaporation chamber is of a conical structure, a negative pressure pipeline is arranged in the middle of the conical structure, the crystallization chamber is formed by connecting a cylinder body part and a cone frustum body part, the diameter of the cylinder body part is larger than that of the negative pressure evaporation chamber, and the negative pressure evaporation chamber partially extends into the crystallization chamber; a crystal incubator is arranged in the middle of the crystallization chamber, an axial flow pump is arranged at the bottom of the crystallization chamber, and an impeller of the axial flow pump extends into the crystal incubator; the circulation feed inlet and the circulation discharge outlet are connected with a steam heater through a circulation pipeline, and the feed pipeline is connected to the circulation pipeline at the side of the circulation discharge outlet. In this way, the utility model discloses can realize the continuous crystallization of sodium hypophosphite, make things convenient for and link up in follow-up automation line, reduction in production cost, crystal particle diameter is big moreover, and the crystal form is stable, and market competition is strong.
Description
Technical Field
The utility model relates to a production facility field especially relates to a continuous crystallizer for sodium hypophosphite production.
Background
As a common chemical auxiliary agent, sodium hypophosphite is widely applied to the aspects of medicines, foods, textiles, metal nickel plating and the like, in the production process of sodium hypophosphite crystals, an intermittent method is traditionally used for crystallization separation, the intermittent crystallization separation needs to completely crystallize feed liquid in a reaction tank and take out the feed liquid to crystallize the next feed liquid, the required crystallization equipment is large in quantity, the crystallization efficiency is low, the crystal grain size is small, the subsequent dehydration is not facilitated, and the intermittent production is inconvenient to link with the subsequent automatic production line.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides a crystallizer, can continuous production, and can improve crystal grain size.
In order to solve the technical problem, the utility model discloses a technical scheme be: providing a continuous crystallizer comprising: the continuous crystallizer body is provided with a circulating feed port and a circulating discharge port, and comprises a negative pressure evaporation chamber and a crystallization chamber, wherein the negative pressure evaporation chamber is arranged above the crystallization chamber, the top of the negative pressure evaporation chamber is of a conical structure, and a negative pressure pipeline is arranged in the middle of the conical structure; the crystallization chamber is formed by connecting a barrel body part and a cone frustum body part, the diameter of the barrel body part is larger than that of the negative pressure evaporation chamber, the negative pressure evaporation chamber partially extends into the crystallization chamber, the extending part does not exceed the range of the barrel body part, and the outer wall of the negative pressure evaporation chamber and the barrel body part form a wall clamping structure; a crystal breeding device is arranged in the middle of the crystallization chamber, the crystal breeding device is a circular hollow cylinder, an axial flow pump is arranged at the bottom of the crystallization chamber, and an impeller of the axial flow pump extends into the crystal breeding device; the circulation feed inlet sets up in crystallization chamber bottom position, the setting of circulation discharge gate is in the upper end of arm lock structure, circulation feed inlet and circulation discharge gate pass through circulating line and connect steam heater, feed pipeline inserts circulating line in circulation discharge gate side.
In a preferred embodiment of the present invention, the bottom and the side wall of the crystallization chamber are connected by a curved surface.
In a preferred embodiment of the present invention, the height ratio between the barrel portion and the truncated cone portion of the crystallization chamber is 1: 2 to 4.
In a preferred embodiment of the present invention, the vertex angle of the frustum cone is 60 ° to 120 °.
In a preferred embodiment of the present invention, the highest point of the crystal grower is 10 to 20cm higher than the highest point of the cylinder.
In a preferred embodiment of the present invention, the bottom of the crystal growing device is 30-50 cm away from the bottom of the crystallization chamber, the discharge port of the crystallization chamber and the inlet of the circulation liquid are both disposed in the space between the crystal growing device and the bottom, and the inlet of the circulation liquid and the discharge port of the crystallization chamber are respectively disposed on both sides of the crystal growing device.
In a preferred embodiment of the present invention, a trumpet-shaped liquid outlet is disposed at the top end of the crystal incubator.
In a preferred embodiment of the present invention, a wall-clamping structure is defined between the negative pressure evaporation chamber and the cylinder, and the circulation discharge port and the mother liquor outlet are disposed at the upper part of the wall-clamping structure.
The utility model has the advantages that: the continuous crystallizer in the utility model can continuously shift out moisture from the crystallizer in a vacuum evaporation mode, thereby keeping the mother liquor in the crystallizer continuously feeding liquid in a supersaturated state all the time, keeping the dissolution and the crystallization balance in the mother liquor continuously moving to the crystallization direction, continuously pushing the mother liquor to circulate by using the axial flow pump in the crystallization process, only depositing the crystal particles reaching the requirement to the discharge port at the bottom of the crystallizer to discharge out of the crystallizer, thereby realizing the continuous crystallization of the sodium hypophosphite product, because the crystal growth environment is better compared with the traditional intermittent production, the crystal form of the product is uniform and stable, the granularity can reach 6-20 meshes, the quality is stable and reliable, moreover, the continuous crystallizer can be linked with an automatic production line, the labor intensity and the production cost of workers are obviously reduced, and the comprehensive competitiveness of the product is increased,
drawings
FIG. 1 is a schematic view of a connection structure according to a preferred embodiment of the present invention;
the parts in the drawings are numbered as follows:
1. a negative pressure evaporation chamber, 2 crystallization chambers, 3 crystallizer, 4 axial flow pump, 5 steam heater, 6 condensation water bucket, 7 circulation pump, 8 condensation water pump.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
Referring to fig. 1, an embodiment of the present invention includes:
a continuous crystallizer, comprising: the continuous crystallizer comprises a continuous crystallizer body provided with a circulating feed port and a circulating discharge port, wherein the continuous crystallizer body comprises a negative pressure evaporation chamber 1 and a crystallization chamber 2, the negative pressure evaporation chamber 1 is arranged above the crystallization chamber 2, the top of the negative pressure evaporation chamber 1 is of a conical structure, and a negative pressure pipeline is arranged in the middle of the conical structure;
the crystallization chamber 2 is formed by connecting a cylinder body part and a cone frustum body part, the diameter of the cylinder body part is larger than that of the negative pressure evaporation chamber 1, part of the negative pressure evaporation chamber 1 extends into the crystallization chamber 2, the extending part does not exceed the range of the cylinder body part, the outer wall of the negative pressure evaporation chamber 1 and the cylinder body part form a wall clamping structure in a surrounding way,
the middle of crystallization chamber 2 is installed and is educated brilliant ware 3, educate brilliant ware for circular cavity barrel, axial-flow pump 4 is installed to crystallization chamber 2 bottom, inside axial-flow pump 4's impeller stretched into educate brilliant ware 3, the bottom and the lateral wall of crystallization chamber 2 pass through cambered surface connection, adopt cambered surface structural connection can prevent to appear the dead angle at the in-process hookup location of circulation feeding, lead to the salt crystal consolidation, influence productivity.
The circulation feed inlet sets up in 2 bottom positions in crystallization chamber, the circulation discharge gate sets up on the upper portion of arm lock structure, circulation feed inlet and circulation discharge gate pass through circulating line and connect steam heater 5, feed pipeline inserts circulating line in circulation discharge gate side. Clear liquid in the mother liquid enters a circulating pipeline through a circulating discharge hole under the action of a circulating pump 7, saturated solution entering from a feeding pipe is converged in the circulating pipeline and then enters a steam heater 5, the saturated solution is heated by the steam heater 5 and then enters a crystallization chamber 2 from the circulating feeding pipe, and condensed water formed after heat exchange of hot steam in the steam heater 5 is collected by a condensed water collecting barrel 6 and then discharged by a condensed water pump 8.
The height ratio of the cylinder part and the cone frustum part of the crystallization chamber 2 is 1: 3, the vertex angle of the cone frustum body is 120 degrees. The length of the cylinder determines the range of the double-wall structure, the longer the double-wall structure is, the smaller the granularity of the salt crystals in the mother liquor which can be sent out from the circular discharge port is, and the lower the overall concentration is, so that the average granularity and concentration of the salt crystals in the mother liquor which is reserved around the crystal incubator 3 can be improved.
The highest point of the crystal incubator 3 is 10cm higher than that of the cylinder, a horn-shaped liquid outlet is arranged at the top end of the crystal incubator 3, the distance between the bottom end of the crystal incubator 3 and the bottom of the crystallization chamber is 30cm, the discharge port of the crystallization chamber 3 and the inlet of the circulating liquid are both arranged in the space range between the crystal incubator 3 and the bottom, and the inlet of the circulating liquid and the discharge port of the crystallization chamber 2 are respectively arranged at two sides of the crystal incubator 3. Through the arrangement, the liquid enters the crystal incubator 3 from the bottom of the crystallization chamber 2 in the liquid circulation process, crystals are gradually formed along with the temperature reduction of saturated liquid in the process, wherein small-particle crystals continue to move upwards along the cylinder of the crystal incubator 3 under the pushing of the axial-flow pump 4 and diffuse to the liquid surface area of the whole negative-pressure evaporation chamber 1 through the bell-mouth structure, the liquid surface becomes supersaturated in the negative-pressure evaporation process, and therefore the small-particle crystals are taken as cores to continue to crystallize and increase the granularity, and when the crystal particles grow to be large enough, the liquid pushed by the axial-flow pump 4 cannot drive the crystal particles to move upwards along the inner side wall of the crystal incubator 3 and then deposit at the bottom of the crystallizer and are discharged from a discharge port.
A clear liquid outlet is also formed in the structure of the wall between the negative pressure evaporation chamber 1 and the cylinder body, the content of sodium hypophosphite in the tank can be controlled by discharging mother liquor in production through the clear liquid outlet, and some fine salt crystals can be directly discharged out of the system, so that the granularity of the salt crystals is improved.
Referring to fig. 1, in another embodiment of the present invention,
a continuous crystallizer, comprising: the continuous crystallizer comprises a continuous crystallizer body provided with a circulating feed port and a circulating discharge port, wherein the continuous crystallizer body comprises a negative pressure evaporation chamber 1 and a crystallization chamber 2, the negative pressure evaporation chamber 1 is arranged above the crystallization chamber 2, the top of the negative pressure evaporation chamber 1 is of a conical structure, and a negative pressure pipeline is arranged in the middle of the conical structure;
the crystallization chamber 2 is formed by connecting a cylinder body part and a cone frustum body part, the diameter of the cylinder body part is larger than that of the negative pressure evaporation chamber 1, part of the negative pressure evaporation chamber 1 extends into the crystallization chamber 2, the extending part does not exceed the range of the cylinder body part, the outer wall of the negative pressure evaporation chamber 1 and the cylinder body part form a wall clamping structure in a surrounding way,
the middle of crystallization chamber 2 is installed and is educated brilliant ware 3, educate brilliant ware for circular cavity barrel, axial-flow pump 4 is installed to crystallization chamber 2 bottom, inside axial-flow pump 4's impeller stretched into educate brilliant ware 3, the bottom and the lateral wall of crystallization chamber 2 pass through cambered surface connection, adopt cambered surface structural connection can prevent to appear the dead angle at the in-process hookup location of circulation feeding, lead to the salt crystal consolidation, influence productivity.
The circulation feed inlet sets up in 2 bottom positions in crystallization chamber, the circulation discharge gate sets up on the upper portion of arm lock structure, circulation feed inlet and circulation discharge gate pass through circulating line and connect steam heater 5, feed pipeline inserts circulating line in circulation discharge gate side. Clear liquid in the mother liquid enters a circulating pipeline through a circulating discharge hole under the action of a circulating pump 7, saturated solution entering from a feeding pipe is converged in the circulating pipeline and then enters a steam heater 5, the saturated solution is heated by the steam heater 5 and then enters a crystallization chamber 2 from the circulating feeding pipe, and condensed water formed after heat exchange of hot steam in the steam heater 5 is collected by a condensed water collecting barrel 6 and then discharged by a condensed water pump 8.
The height ratio of the cylinder part and the cone frustum part of the crystallization chamber 2 is 1: 4, the vertex angle of the cone frustum body is 60 degrees. The length of the cylinder determines the range of the double-wall structure, the longer the double-wall structure is, the smaller the granularity of the salt crystals in the mother liquor which can be sent out from the circular discharge port is, and the lower the overall concentration is, so that the average granularity and concentration of the salt crystals in the mother liquor which is reserved around the crystal incubator 3 can be improved.
The highest point of the crystal incubator 3 is 20cm higher than that of the cylinder, a horn-shaped liquid outlet is arranged at the top end of the crystal incubator 3, the distance between the bottom end of the crystal incubator 3 and the bottom of the crystallization chamber is 50cm, the discharge port of the crystallization chamber 3 and the inlet of the circulating liquid are both arranged in the space range between the crystal incubator 3 and the bottom, and the inlet of the circulating liquid and the discharge port of the crystallization chamber 2 are respectively arranged at two sides of the crystal incubator 3. Through the arrangement, the liquid enters the crystal incubator 3 from the bottom of the crystallization chamber 2 in the liquid circulation process, crystals are gradually formed along with the temperature reduction of saturated liquid in the process, wherein small-particle crystals continue to move upwards along the cylinder of the crystal incubator 3 under the pushing of the axial-flow pump 4 and diffuse to the liquid surface area of the whole negative-pressure evaporation chamber 1 through the bell-mouth structure, the liquid surface becomes supersaturated in the negative-pressure evaporation process, and therefore the small-particle crystals are taken as cores to continue to crystallize and increase the granularity, and when the crystal particles grow to be large enough, the liquid pushed by the axial-flow pump 4 cannot drive the crystal particles to move upwards along the inner side wall of the crystal incubator 3 and then deposit at the bottom of the crystallizer and are discharged from a discharge port.
A clear liquid outlet is also formed in the structure of the wall between the negative pressure evaporation chamber 1 and the cylinder body, the content of sodium hypophosphite in the tank can be controlled by discharging mother liquor in production through the clear liquid outlet, and some fine salt crystals can be directly discharged out of the system, so that the granularity of the salt crystals is improved.
When the continuous crystallizer in the embodiment 1 and the embodiment 2 is used, the produced sodium hypophosphite crystal particles can be increased to 6-20 meshes by adjusting the power of the axial flow pump, the particle size is more than 3mm, the quality of the sodium hypophosphite is obviously improved, the continuous crystallizer can be conveniently connected with a subsequent continuous dehydration production line, the automation level of the production line is improved, the labor hour is reduced, the overall production cost is reduced, and the comprehensive competitiveness of the product is improved.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (8)
1. A continuous crystallizer, comprising: the continuous crystallizer body is provided with a circulating feed port and a circulating discharge port and is characterized by comprising a negative pressure evaporation chamber and a crystallization chamber; the negative pressure evaporation chamber is arranged above the crystallization chamber, the top of the negative pressure evaporation chamber is of a conical structure, a negative pressure pipeline is arranged in the middle of the conical structure, the crystallization chamber is formed by connecting a barrel body part and a cone frustum body part, the diameter of the barrel body part is larger than that of the negative pressure evaporation chamber, the negative pressure evaporation chamber partially extends into the crystallization chamber, the extending part does not exceed the range of the barrel body part, and the outer wall of the negative pressure evaporation chamber and the barrel body part form a wall clamping structure; a crystal breeding device is arranged in the middle of the crystallization chamber, the crystal breeding device is a circular hollow cylinder, an axial flow pump is arranged at the bottom of the crystallization chamber, and an impeller of the axial flow pump extends into the crystal breeding device; the circulation feed inlet sets up in crystallization chamber bottom position, the setting of circulation discharge gate is in the upper end of arm lock structure, circulation feed inlet and circulation discharge gate pass through circulating line and connect steam heater, and the charge-in pipeline inserts circulating line in circulation discharge gate side.
2. The continuous crystallizer of claim 1, wherein the bottom and sidewalls of the crystallization chamber are connected by an arcuate surface.
3. The continuous crystallizer of claim 1, wherein the ratio of the height between the barrel and the truncated cone of the crystallization chamber is 1: 2 to 4.
4. The continuous crystallizer of claim 1, wherein the vertex angle of the frustum cone is 60 ° to 120 °.
5. The continuous crystallizer of claim 1, wherein the highest point of the crystallizer is 10-20 cm higher than the highest point of the cylinder.
6. The continuous crystallizer of claim 1, wherein the bottom end of the crystallizer is 30-50 cm away from the bottom of the crystallization chamber, the discharge port of the crystallization chamber and the inlet of the circulation liquid of the crystallization chamber are both disposed in the space between the crystallizer and the bottom, and the inlet of the circulation liquid of the crystallization chamber and the discharge port of the crystallization chamber are disposed on both sides of the crystallizer.
7. The continuous crystallizer of claim 1, wherein a trumpet-shaped liquid outlet is arranged at the top end of the crystallizer.
8. The continuous crystallizer of claim 1, wherein the negative pressure evaporation chamber and the cylinder enclose a clamping wall structure, and the circulation discharge port and the mother liquor outlet are arranged at the upper part of the clamping arm structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022963667.5U CN214680125U (en) | 2020-12-12 | 2020-12-12 | Continuous crystallizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022963667.5U CN214680125U (en) | 2020-12-12 | 2020-12-12 | Continuous crystallizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214680125U true CN214680125U (en) | 2021-11-12 |
Family
ID=78557623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022963667.5U Active CN214680125U (en) | 2020-12-12 | 2020-12-12 | Continuous crystallizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214680125U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115025513A (en) * | 2022-07-07 | 2022-09-09 | 科立鑫(珠海)新能源有限公司 | Continuous crystallization process and equipment for coarse-particle cobalt sulfate |
-
2020
- 2020-12-12 CN CN202022963667.5U patent/CN214680125U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115025513A (en) * | 2022-07-07 | 2022-09-09 | 科立鑫(珠海)新能源有限公司 | Continuous crystallization process and equipment for coarse-particle cobalt sulfate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202155069U (en) | Internal-circulation evaporation crystallizer | |
| CN212504022U (en) | Circulating potassium nitrate crystallization device | |
| CN214680125U (en) | Continuous crystallizer | |
| CN105664521A (en) | Dynamic crystallization equipment and dynamic crystallization method | |
| CN204057987U (en) | Saltcake continuous seepage freezing and crystallizing device | |
| CN105435482A (en) | Multi-stage vacuum adiabatic flash continuous crystallization method and equipment | |
| CN201930572U (en) | Continuous vacuum cooling crystallizing device | |
| CN208018194U (en) | A kind of extraction Quercetin recrystallization device | |
| CN202638034U (en) | Lysine hydrochloride evaporation crystallization tank | |
| CN107626112A (en) | A kind of continuous production vacuum cooling crystallizer | |
| CN207641035U (en) | Potassium permanganate OSLO crystallizes production system | |
| CN207708564U (en) | Potassium permanganate DTB crystallizes production system | |
| CN106359316A (en) | Drip irrigation infiltration type earthworm breeding box | |
| CN203333674U (en) | Single crystal rock candy production device | |
| CN218589717U (en) | Vacuum type continuous evaporation crystallization device | |
| CN204034313U (en) | A kind of gluconic acid sodium salt crystallization apparatus of efficient, energy-conservation, continuous discharge | |
| CN213221031U (en) | Crystallization system of amino acid | |
| CN211798905U (en) | High-efficient evaporation crystallization device of lithium chloride | |
| CN207356613U (en) | A kind of continuous production vacuum cooling crystallizer | |
| CN201906482U (en) | Vacuum crystallizing device | |
| CN206642403U (en) | A kind of continuous production Two-way Cycle freezing and crystallizing device | |
| CN109045745B (en) | Continuous vacuum cooling crystallization device with lifting diversion function | |
| CN208660407U (en) | A kind of concentrated acid crystallization apparatus | |
| CN115869643A (en) | Vacuum type continuous evaporation crystallization device | |
| CN214512807U (en) | Crystallization system for producing nickel sulfate by continuous method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |