CN216536986U

CN216536986U - Continuous large-particle salt energy-saving crystallizer

Info

Publication number: CN216536986U
Application number: CN202123016859.6U
Authority: CN
Inventors: 郑文昌; 焦积琼
Original assignee: Wuxi Ruisi En Machinery Co ltd
Current assignee: Wuxi Ruisi En Machinery Co ltd
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-05-17
Anticipated expiration: 2031-12-03

Abstract

The utility model discloses a continuous large-granule salt energy-saving crystallizer, which comprises: the crystallization main body unit comprises a crystallization box body, a spindle motor arranged at the tail part of the crystallization box body, a crystallizer cover body arranged at the upper side of the crystallization box body and a fine salt collecting tank arranged at the bottom of the crystallization box body, wherein a spindle is arranged at the output end of the spindle motor, the spindle extends and is rotatably arranged in the crystallization box body, and a conveying screw belt is arranged on the spindle; and the heat exchange main body unit comprises a heat exchanger, a heat exchange pipeline arranged in the heat exchanger and a mechanical compression heat pump positioned on one side of the crystallization box body. The utility model can be directly connected with the existing vacuum salt equipment, produces large-granularity high-purity crystal salt products by utilizing clean saturated high-temperature brine generated by a brine ion treatment system and an evaporation heat exchange system of the existing vacuum salt evaporation system, and solves the problem that the traditional vacuum salt production enterprises can not produce large-granularity crystal salt products.

Description

Continuous large-particle salt energy-saving crystallizer

Technical Field

The utility model relates to the technical field, in particular to a continuous large-particle salt energy-saving crystallizer.

Background

The main products in the current edible salt market are classified according to the production method, mainly comprising vacuum salt products and powder washing salt products, the main edible salt in the current market is supplied as the vacuum salt products, the product has smaller granularity, the size is maintained below 1mm, the product is not suitable for western food and barbecue industry, the high-purity large-particle salt in the market has higher selling price, and the cost of a user is increased.

In addition, the existing mature crystallization equipment in the salt manufacturing industry comprises a vertical jacket crystallizer, a long groove stirring type continuous crystallizer, a vacuum crystallizer and the like, wherein both the vertical jacket crystallizer and the long groove stirring type continuous crystallizer need a large amount of cooling water, and the vacuum crystallizer needs a large amount of steam. The requirements of energy conservation, consumption reduction and carbon emission reduction on using clean energy are provided in the existing industrial system, so that the requirements of energy conservation and emission reduction cannot be met.

SUMMERY OF THE UTILITY MODEL

This section is for the purpose of summarizing some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the utility model.

The utility model is provided in view of the problems of the prior continuous large-granule salt energy-saving crystallizer.

Therefore, the utility model aims to provide a continuous large-particle salt energy-saving crystallizer, which is used for preparing a large-particle salt product by using saturated brine in vacuum salt production and can be conveniently applied to western food and barbecue industry and reduce the cost.

In order to solve the technical problems, the utility model provides the following technical scheme: a continuous large-particle salt energy-saving crystallizer, comprising:

the crystallization main body unit comprises a crystallization box body, a spindle motor arranged at the tail part of the crystallization box body, a crystallizer cover body arranged at the upper side of the crystallization box body and a fine salt collecting tank arranged at the bottom of the crystallization box body, wherein a spindle is arranged at the output end of the spindle motor, the spindle extends and is rotatably arranged in the crystallization box body, and a conveying spiral belt is arranged on the spindle;

the heat exchange main body unit comprises a heat exchanger, a heat exchange pipeline arranged in the heat exchanger, and a mechanical compression heat pump arranged on one side of the crystallization box body, wherein the mechanical compression heat pump is connected with the heat exchanger through a compression steam pipeline, the mechanical compression heat pump is further connected with the crystallizer cover body through a secondary steam pipeline, a salt slurry pump is arranged at the bottom of the crystallization box body, the salt slurry pump is connected with the heat exchanger through a fine salt slurry circulating pipeline, and the output end of the heat exchanger is connected with the crystallization box body through a fine salt slurry outlet pipe.

As a preferable scheme of the continuous large-particle salt energy-saving crystallizer, the method comprises the following steps: one side of the compressed steam pipeline is also connected with a steam supplementing pipeline, and a control valve is arranged on the steam supplementing pipeline.

As a preferable scheme of the continuous large-particle salt energy-saving crystallizer, the method comprises the following steps: the fine salt collecting tank is internally provided with a sieve plate and is connected with a salt slurry pump.

As a preferable scheme of the continuous large-particle salt energy-saving crystallizer, the method comprises the following steps: the crystallization main body unit comprises a finished salt slurry pump, a finished salt collecting tank is further arranged at the tail of the crystallization box body, and the finished salt collecting tank is connected with the finished salt slurry pump through a pipeline.

As a preferable scheme of the continuous large-particle salt energy-saving crystallizer, the method comprises the following steps: the heat exchanger is sequentially provided with a cleaning water interface, an upper thermometer interface, a condensate water outlet and a lower thermometer interface from top to bottom.

As a preferable scheme of the continuous large-particle salt energy-saving crystallizer, the method comprises the following steps: and a non-condensable gas outlet is formed in one side of the heat exchanger, and an observation window connector is arranged on the front side of the heat exchanger.

The utility model has the beneficial effects that:

1. the method can be directly connected with the existing vacuum salt equipment, large-granularity high-purity crystalline salt products are produced by clean saturated high-temperature brine generated by a brine ion treatment system and an evaporation heat exchange system of the existing vacuum salt evaporation system, the problem that large-granularity crystalline salt products cannot be produced by traditional vacuum salt production enterprises is solved, the crystallized large-granule salt can also directly enter a separation drying system of the traditional vacuum salt production, and new equipment does not need to be added or the existing vacuum salt production system does not need to be modified.

2. Except that need insert steam when starting, use electric power as the power supply during operation, insert the convenience and reach energy saving and consumption reduction's effect through the heat in the mechanical compression heat pump recovery brine, utilize the negative pressure evaporation that mechanical compression heat pump produced to reduce the temperature of crystallizer in addition, avoided the use of cooling water, reduced cooling load, the system is at the crystallization of suitable higher temperature simultaneously, and the crystallization rate is relatively low temperature crystallization fast, has improved equipment production efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:

FIG. 1 is a schematic diagram of the overall structure of a continuous large-particle salt energy-saving crystallizer provided by the utility model.

FIG. 2 is a schematic structural diagram of a heat exchanger in a continuous large-particle salt energy-saving crystallizer provided by the utility model.

In the figure: 1-1 crystallizing box body; 1-2 crystallizer cover bodies; 1-3 main shafts; 1-4 conveying the spiral belt; 1-5 sieve plates; 1-6 fine salt collecting tanks; 1-7 finished salt collecting tank; 1-8 spindle motors; 1-9 secondary steam pipelines; 1-10 finished salt slurry pump; 2-1 mechanical compression heat pump; 2-2 compressed vapor line; 2-3 heat exchangers; 2-3a cleaning water interface; 2-3b, an upper thermometer interface; 2-3c condensate outlet; 2-3d, arranging a thermometer interface; 2-3e observation window interface; 2-3f non-condensable gas outlet; 2-4 heat exchange pipelines; 2-5 salt slurry pump.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the utility model. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Furthermore, the present invention is described in detail with reference to the drawings, and in the detailed description of the embodiments of the present invention, the cross-sectional view illustrating the structure of the device is not enlarged partially according to the general scale for convenience of illustration, and the drawings are only exemplary and should not be construed as limiting the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

Example 1

Referring to fig. 1-2, in one embodiment of the present invention, there is provided a continuous large-particle salt energy-saving crystallizer, comprising: a crystallization main unit and a heat exchange main unit.

Wherein the crystallization main unit comprises a crystallization box body 1-1, a spindle motor 1-8 arranged at the tail part of the crystallization box body 1-1, a crystallizer cover body 1-2 arranged at the upper side of the crystallization box body 1-1, and a fine salt collecting tank 1-6 arranged at the bottom of the crystallization box body 1-1, an observation window is arranged on the crystallization box body 1-1, a spindle 1-3 is arranged at the output end of the spindle motor 1-8, the spindle 1-3 is arranged in the crystallization box body 1-1 in an extending and rotating way, a conveying spiral belt 1-4 is arranged on the spindle 1-3, a sieve plate 1-5 is arranged in the fine salt collecting tank 1-6, the fine salt collecting tank 1-6 is connected with a salt slurry pump 2-5, and the crystallized salt which does not reach the size requirement can leak into the fine salt collecting tank 1-6, pumping the brine together with the brine into a heat exchanger 2-3 through a salt slurry pump 2-5, heating, and then returning to the crystallizer again for circular production.

Specifically, the crystallization main body unit comprises a finished salt slurry pump 1-10, a finished salt collecting tank 1-7 is further arranged at the tail of the crystallization box body 1-1, the finished salt collecting tank 1-7 is connected with the finished salt slurry pump 1-10 through a pipeline, the crystallized salt meeting the size requirement is continuously pushed into the finished salt collecting tank 1-7, and then the crystallized salt is pumped to a next section through the finished salt slurry pump 1-10 for centrifugal separation.

The heat exchange main body unit comprises a heat exchanger 2-3, a heat exchange pipeline 2-4 arranged in the heat exchanger 2-3 and a mechanical compression heat pump 2-1 positioned on one side of a crystallization box body 1-1, wherein the mechanical compression heat pump 2-1 is connected with the heat exchanger 2-3 through a compression steam pipeline 2-2, the heat exchanger 2-3 is sequentially provided with a cleaning water interface 2-3a, an upper thermometer interface 2-3b, a condensed water outlet 2-3c and a lower thermometer interface 2-3d from top to bottom and used for installation and access of various monitoring instruments and meters, one side of the heat exchanger 2-3 is provided with a non-condensable gas outlet 2-3f, and the front side of the heat exchanger 2-3 is provided with an observation window interface 2-3 e.

The mechanical compression heat pump 2-1 is also connected with a crystallizer cover body 1-2 through a secondary steam pipeline 1-9, a salt slurry pump 2-5 is arranged at the bottom of the crystallization box body 1-1, the salt slurry pump 2-5 is connected with a heat exchanger 2-3 through a fine salt slurry material circulating pipeline, the output end of the heat exchanger 2-3 is connected with the crystallization box body 1-1 through a fine salt slurry outlet pipe and used for discharging heated fine salt slurry, a steam supplementing pipeline is also connected to one side of the compression steam pipeline 2-2, and a control valve is arranged on the steam supplementing pipeline and used for supplementing steam.

In the using process, the system is connected with the existing vacuum salt equipment, the sent saturated brine enters the crystallization box body 1-1 through a pipeline, when the interior of the crystallizer reaches a certain liquid level height, the salt slurry pump 2-5 starts to be started, enters the heat exchanger 2-3 through a fine salt slurry circulating pipeline, and then flows back into the crystallization box body 1-1; after the salt slurry is circulated and stabilized, introducing steam through a supplementary steam pipeline in the graph to preheat a heat exchanger 2-3 and heat fine salt slurry, after preheating is finished, starting a mechanical compression heat pump 2-1, starting the mechanical compression heat pump 2-1 to generate certain negative pressure in a crystallizer, evaporating the salt slurry in a crystallization box body 1-1 and reducing the temperature, generating a large number of crystal nuclei in the crystallization box body 1-1 and starting to grow up at the moment, observing that the crystallization box body 1-1 operates until the bottom of the crystallization salt is deposited to a certain thickness, starting a spindle motor 1-8, driving a conveying screw belt 1-4 to rotate by a spindle 1-3, lifting and stirring the crystal salt deposited at the bottom by the conveying screw belt 1-4 and advancing towards the tail end of the equipment, and enabling the lifted crystal salt to be adsorbed and grow up by contacting with a surface boiling layer, meanwhile, crystallization heat released under the action of vacuum evaporation can be taken away by secondary steam to achieve the effect of stabilizing crystals, the crystallized salt falling back to the bottom of the crystallizer from the boiling surface is pushed towards the tail end of the crystallizer by the conveying spiral belt 1-4, the crystallized salt meeting the size requirement continuously enters the finished salt collecting tank 1-7 in the advancing process through the screening of the screen plate 1-5, then is pumped to the next working section through the finished salt slurry pump 1-10 for centrifugal separation, the crystallized salt not meeting the size requirement leaks into the fine salt collecting tank 1-6 through the screen plate 1-5, and is conveyed into the heat exchanger 2-3 through the salt slurry pump 2-5 together with brine to be heated and then returns to the crystallization box body 1-1 again.

When the mechanical compression heat pump 2-1 is opened, the crystallizer can quickly enter a negative pressure state, at the moment, the internal high-temperature saturated brine can start to evaporate, the generated secondary steam can be sucked into the mechanical compression heat pump 2-1 through a secondary steam pipeline 1-9 and is compressed to 0.3-0.4MPa through the mechanical compression secondary steam, the compressed secondary steam exchanges heat with the fine salt slurry circulating liquid in the heat exchanger 2-3 and is discharged after being condensed into condensed water, latent heat of vaporization is released to the fine salt slurry circulating liquid, the heat brought by saturated brine in the crystallizer from an evaporator in the upper working section is recovered, the effect of heat recovery is achieved, meanwhile, the negative pressure generated by the mechanical compression heat pump 2-1 reduces the temperature of materials in the crystallizer and enables the materials to evaporate, the crystallization process of salt is facilitated, the use of cooling water is replaced, and the refrigeration load is saved, further achieving the effect of energy saving.

It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims

1. A continuous large-particle salt energy-saving crystallizer is characterized in that: the method comprises the following steps:

the crystallization main body unit comprises a crystallization box body (1-1), a spindle motor (1-8) arranged at the tail part of the crystallization box body (1-1), a crystallizer cover body (1-2) arranged at the upper side of the crystallization box body (1-1), and a fine salt collecting tank (1-6) arranged at the bottom of the crystallization box body (1-1), wherein the output end of the spindle motor (1-8) is provided with a spindle (1-3), the spindle (1-3) extends and is rotatably arranged in the crystallization box body (1-1), and a conveying spiral belt (1-4) is arranged on the spindle (1-3);

a heat exchange main body unit which comprises a heat exchanger (2-3), a heat exchange pipeline (2-4) arranged in the heat exchanger (2-3), and a mechanical compression heat pump (2-1) positioned at one side of the crystallization box body (1-1), the mechanical compression heat pump (2-1) is connected with the heat exchanger (2-3) through a compression steam pipeline (2-2), the mechanical compression heat pump (2-1) is also connected with a crystallizer cover body (1-2) through a secondary steam pipeline (1-9), a salt slurry pump (2-5) is arranged at the bottom of the crystallization box body (1-1), and the salt slurry pump (2-5) is connected with the heat exchanger (2-3) through a fine salt slurry material circulating pipeline, the output end of the heat exchanger (2-3) is connected with the crystallization box body (1-1) through a fine salt slurry outlet pipe.

2. The continuous large-particle salt energy-saving crystallizer of claim 1, wherein: one side of the compressed steam pipeline (2-2) is also connected with a steam supplement pipeline, and a control valve is arranged on the steam supplement pipeline.

3. The continuous large-particle salt energy-saving crystallizer of claim 2, wherein: the fine salt collecting tank (1-6) is internally provided with a sieve plate (1-5), and the fine salt collecting tank (1-6) is connected with a salt slurry pump (2-5).

4. The continuous large-particle salt energy-saving crystallizer of claim 3, wherein: the crystallization main body unit comprises a finished salt slurry pump (1-10), a finished salt collecting tank (1-7) is further arranged at the tail of the crystallization box body (1-1), and the finished salt collecting tank (1-7) is connected with the finished salt slurry pump (1-10) through a pipeline.

5. The continuous large-particle salt energy-saving crystallizer according to any one of claims 1 to 4, characterized in that: the heat exchanger (2-3) is sequentially provided with a cleaning water interface (2-3a), an upper thermometer interface (2-3b), a condensed water outlet (2-3c) and a lower thermometer interface (2-3d) from top to bottom.

6. The continuous large-particle salt energy-saving crystallizer of claim 5, wherein: and a non-condensable gas outlet (2-3f) is formed in one side of the heat exchanger (2-3), and an observation window interface (2-3e) is formed in the front face of the heat exchanger (2-3).