CN114011593A - Crystalline salt dewatering system - Google Patents
Crystalline salt dewatering system Download PDFInfo
- Publication number
- CN114011593A CN114011593A CN202111308486.1A CN202111308486A CN114011593A CN 114011593 A CN114011593 A CN 114011593A CN 202111308486 A CN202111308486 A CN 202111308486A CN 114011593 A CN114011593 A CN 114011593A
- Authority
- CN
- China
- Prior art keywords
- valve
- centrifuge
- pipeline
- thickener
- dewatering system
- 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.)
- Pending
Links
- 150000003839 salts Chemical class 0.000 title claims abstract description 64
- 239000007787 solid Substances 0.000 claims abstract description 12
- 238000011010 flushing procedure Methods 0.000 claims description 34
- 239000002562 thickening agent Substances 0.000 claims description 34
- 238000007599 discharging Methods 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 18
- 230000001105 regulatory effect Effects 0.000 claims description 17
- 239000012452 mother liquor Substances 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims 1
- 230000018044 dehydration Effects 0.000 abstract description 12
- 238000006297 dehydration reaction Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000002002 slurry Substances 0.000 description 9
- 239000012266 salt solution Substances 0.000 description 5
- 238000000151 deposition Methods 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 238000005119 centrifugation Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B5/00—Other centrifuges
- B04B5/10—Centrifuges combined with other apparatus, e.g. electrostatic separators; Sets or systems of several centrifuges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B13/00—Control arrangements specially designed for centrifuges; Programme control of centrifuges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B15/00—Other accessories for centrifuges
- B04B15/06—Other accessories for centrifuges for cleaning bowls, filters, sieves, inserts, or the like
Landscapes
- Centrifugal Separators (AREA)
Abstract
The invention relates to the technical field of salt production and discloses a crystallized salt dehydration system. Including the stiff ware, centrifuge, wash conduit and controller, centrifuge is located the below of stiff ware, the top of stiff ware is equipped with first feed inlet, the bottom of stiff ware is equipped with first discharge gate, the centrifuge top is equipped with the second feed inlet, the centrifuge bottom is equipped with centrifugate discharge gate and solid salt discharge gate, communicate through the baiting pipeline between the first discharge gate of stiff ware bottom and the centrifuge top feed inlet, discharge valve and governing valve have been equipped with from last down in proper order on the baiting pipeline, wash conduit and baiting pipeline intercommunication and the intercommunication point between the two is located between discharge valve and the governing valve, be equipped with the flushometer on the wash conduit, controller control stiff ware, centrifuge, the discharge valve, opening and closing of governing valve and flushometer. The centrifugal salt dehydration process can be controlled in the whole course of the crystallized salt dehydration process through the controller, and when the pipeline is blocked, the pipeline can be dredged in time.
Description
Technical Field
The invention relates to the technical field of salt production, in particular to a crystallized salt dehydration system.
Background
In the field of salt production by an evaporative crystallizer, salt solution is crystallized after being evaporated and concentrated, salt after crystallization needs to be dehydrated, and a centrifuge is generally used for implementing the working section, and the salt solution is mainly composed of a thickener (thickening the salt solution again, which is equivalent to a sedimentation tank), pipe valve assemblies (manually controlling the flow of salt slurry), a centrifuge (core dewatering equipment), a mother liquor pool (receiving overflow of the thickener, filtrate of the centrifuge and the like). Because this equipment of centrifuge involves clearance, washing, adjustment to rely on the manual work to observe and go on in time, the manual work carries out the clearance, washs, the adjustment of machine, can't realize automaticly. In addition, when the pipeline of the crystallized salt dehydration system is blocked, the pipeline cannot be dredged in time, and the normal operation of the system is affected.
Disclosure of Invention
The present invention has been made to overcome the above problems of the prior art and provides a crystalline salt dehydration system. The centrifugal salt dehydration process can be controlled in the whole course of the crystalline salt dehydration process through the controller, and the operation is simple and convenient; in addition, when the pipeline of the system is blocked, the pipeline can be dredged in time.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a crystallization salt dewatering system, includes stiff ware, centrifuge, wash conduit and controller, centrifuge is located the below of stiff ware, the top of stiff ware is equipped with first feed inlet, the bottom of stiff ware is equipped with first discharge gate, the centrifuge top is equipped with the second feed inlet, the centrifuge bottom is equipped with centrifugate discharge gate and solid salt discharge gate, through discharge pipeline intercommunication between the first discharge gate of stiff ware bottom and the second feed inlet at centrifuge top, last from last bleeder valve and the governing valve down of down being equipped with in proper order of discharge pipeline, wash conduit and discharge pipeline intercommunication and the intercommunication point between the two be located between bleeder valve and the governing valve, be equipped with the flushometer on the wash conduit, opening and closing of controller control stiff ware, centrifuge, bleeder valve, governing valve and flushometer.
The opening and closing of the thickener, the centrifuge, the discharge valve, the regulating valve and the flushing valve in the crystallized salt dewatering system are controlled by the controller, the traditional manual opening and closing is replaced, and the operation is simple. In the operation process of the dehydration system, salt liquid subjected to evaporation concentration enters the thickener from a first feeding hole at the top of the thickener, the thickener is opened through the controller, the salt liquid is further concentrated by the thickener, after the concentration is finished, a first discharging hole at the bottom of the thickener is opened, the concentrated salt liquid enters a discharging pipeline, the discharging speed is controlled by an adjusting valve, the adjusting valve is a pneumatic or electric adjusting valve, the opening degree is controlled by a knob, a field special controller of the controller gives a 4-20mA signal to the adjusting valve, the valve is correspondingly opened to a given valve opening degree according to a given current signal, so that the flowing speed of salt slurry is controlled, then the salt liquid enters the centrifuge from a discharging pipeline, solid salt at the bottom is discharged from a solid salt discharging hole after the centrifugation of the centrifuge, and the centrifugal liquid flows out from a centrifugal liquid discharging hole.
When the situations that a discharge pipeline is blocked, a centrifugal machine needs to be cleaned in the forward direction, the pipeline is washed and the like occur, the washing valve is involved. When the upper end of the discharge valve is blocked, the regulating valve is closed, the discharge valve is kept open, the flushing valve is opened, and after flushing is finished, the flushing valve is closed and the regulating valve is opened, which is called reverse flushing; when the regulating valve and the following parts are blocked, the discharge valve is closed, the flushing valve is opened, after the flushing is finished, the flushing valve is closed, and the discharge valve is opened, which is called forward flushing; when the centrifuge needs to be cleaned, the discharge valve is closed, the flushing valve is opened, after the flushing is finished, the flushing valve is closed, and the discharge valve is opened, which is called forward cleaning.
Preferably, a stirrer is arranged in the thickener to prevent solid salt at the bottom from depositing, and the controller controls the stirrer to be turned on and off.
The stirrer is controlled on a master control panel through frequency conversion control, the current value of the stirrer is displayed on the controller, an operator adjusts the frequency of the stirrer in real time according to the current value, and when the current value is too low, the rotation frequency of the stirrer is reduced so as to reduce disturbance to salt and accelerate the sedimentation speed; when the current value is too high, the stirrer frequency is increased to enhance the disturbance to the salt to prevent the salt deposition at the bottom from causing blockage too much and the stirrer current from jumping off too much.
Preferably, the bottom of the thickener is provided with an emptying valve.
Preferably, the top of the thickener is provided with a first exhaust pipeline.
Preferably, the centrifuge is provided with a second exhaust pipeline.
Preferably, a mother liquor pool is arranged below the centrifuge.
Preferably, the outer side wall of the thickener is communicated with an overflow pipeline, and the other end of the overflow pipeline is communicated with the mother liquor pool.
Preferably, the centrifugate discharge port is communicated with the mother liquid pool through a centrifugate conveying pipeline.
Preferably, the discharge pipeline is provided with an observation mirror.
The salt slurry is observed through the observation mirror after passing through the regulating valve, and the observation mirror can observe whether the salt slurry smoothly circulates or not, whether the salt slurry is blocked or not, the flow rate, the concentration degree and the dilution degree and the like, and the regulating valve is regulated and controlled in real time according to the running condition of the centrifugal machine.
The observation mirror is a cross sight mirror or a four-way sight mirror, and has the advantages of high structural strength, large visual area and the like.
Therefore, the invention has the following beneficial effects: 1) opening and closing of a thickener, a centrifugal machine, a discharge valve, a regulating valve and a flushing valve in the crystallized salt dewatering system are controlled by a controller, traditional manual opening and closing is replaced, and operation is simple; 2) the pipeline of the dehydration system can be dredged quickly when being blocked.
Drawings
FIG. 1 is a schematic diagram showing a structure of a crystalline salt dehydration system according to the present invention.
Reference numerals
The device comprises a thickener 100, a first feeding hole 101, a first discharging hole 102, a stirrer 103, an emptying valve 104, a first exhaust pipeline 105, an overflow pipeline 106, a centrifuge 200, a second feeding hole 201, a centrifugate discharging hole 202, a solid salt discharging hole 203, a second exhaust pipeline 204, a flushing pipeline 300, a flushing valve 301, a controller 400, a discharging pipeline 500, a discharging valve 501, a regulating valve 502, an observation mirror 503, a mother liquor pool 600 and a centrifugate conveying pipeline 700.
Detailed Description
The invention is described in further detail below with reference to specific embodiments and the attached drawing figures. Those skilled in the art will be able to implement the invention based on these teachings. Moreover, the embodiments of the present invention described in the following description are generally only some embodiments of the present invention, and not all embodiments. Therefore, all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Unless otherwise specified, the raw materials used in the examples of the present invention are all commercially available or available to those skilled in the art; unless otherwise specified, the methods used in the examples of the present invention are all those known to those skilled in the art.
Example 1
Referring to fig. 1, a schematic diagram of a crystalline salt dewatering system according to the present invention includes a thickener 100, a centrifuge 200, a flushing line 300, and a controller 400, the centrifuge being located below the thickener. The top of stiff ware is equipped with first feed inlet 101, the bottom of stiff ware is equipped with first discharge gate 102, the top of stiff ware is equipped with first exhaust duct 105, be equipped with second exhaust duct 204 on the centrifuge, the centrifuge top is equipped with second feed inlet 201, the centrifuge bottom is equipped with centrifugate discharge gate 202 and solid salt discharge gate 203, through baiting pipeline 500 intercommunication between the first discharge gate of stiff ware bottom and the second feed inlet at centrifuge top, from last bleeder valve 501 and the governing valve 502 of down being equipped with in proper order on the baiting pipeline, flushone pipeline and baiting pipeline intercommunication and intercommunication point between the two are located between bleeder valve and the governing valve, be equipped with flushometer 301 on the flushone pipeline, opening and closing of controller control stiff ware, centrifuge, bleeder valve, governing valve and flushometer. The opening and closing of the thickener, the centrifuge, the discharge valve, the regulating valve and the flushing valve are controlled by the controller, the traditional manual opening and closing is replaced, and the operation is simple.
The discharging pipeline is provided with an observation mirror 503, salt slurry is observed through the observation mirror after passing through the regulating valve, the observation mirror can observe whether the salt slurry smoothly flows, whether the salt slurry is blocked, the flow rate, the concentration degree and the like, and the regulating valve is regulated in real time according to the running condition of the centrifuge for control.
The inside agitator 103 that is equipped with of stiff ware prevents that bottom solid salt from taking place the deposit, opening and closing of controller control agitator. The solid salt can be prevented from depositing and blocking by stirring the salt liquid by the stirrer. The stirrer is controlled on the master control panel in a variable frequency mode, the current value of the stirrer is displayed on the controller, an operator adjusts the frequency of the stirrer in real time according to the current value, and when the current value is too low, the rotation frequency of the stirrer is reduced so as to reduce disturbance to salt and accelerate the sedimentation speed; when the current value is too high, the stirrer frequency is increased to enhance the disturbance to the salt to prevent the salt deposition at the bottom from causing blockage too much and the stirrer current from jumping off too much.
In the operation process of the dehydration system, salt liquid subjected to evaporation concentration enters the thickener from a first feeding hole at the top of the thickener, the thickener is opened through the controller, the salt liquid is further concentrated by the thickener, after the concentration is finished, a first discharging hole at the bottom of the thickener is opened, the concentrated salt liquid enters a discharging pipeline, the discharging speed is controlled by an adjusting valve, the adjusting valve is a pneumatic or electric adjusting valve, the opening degree is controlled by a knob, a field special controller of the controller gives a 4-20mA signal to the adjusting valve, the valve is correspondingly opened to a given valve opening degree according to a given current signal, so that the flowing speed of salt slurry is controlled, then the salt liquid enters the centrifuge from a discharging pipeline, solid salt at the bottom is discharged from a solid salt discharging hole after the centrifugation of the centrifuge, and the centrifugal liquid flows out from a centrifugal liquid discharging hole.
When the situations that a discharge pipeline is blocked, a centrifugal machine needs to be cleaned in the forward direction, the pipeline is washed and the like occur, the washing valve is involved. When the upper end of the discharge valve is blocked, the regulating valve is closed, the discharge valve is kept open, the flushing valve is opened, and after flushing is finished, the flushing valve is closed and the regulating valve is opened, which is called reverse flushing; when the regulating valve and the following parts are blocked, the discharge valve is closed, the flushing valve is opened, after the flushing is finished, the flushing valve is closed, and the discharge valve is opened, which is called forward flushing; when the centrifuge needs to be cleaned in the forward direction, the discharge valve is closed, the flushing valve is opened, after the flushing is finished, the flushing valve is closed, and the discharge valve is opened, which is called forward cleaning.
The centrifuge is characterized in that a mother liquor pool 600 can be arranged below the centrifuge, an overflow pipeline 106 can be arranged on the outer side wall of the thickener, the other end of the overflow pipeline is communicated with the mother liquor pool, and a centrifugal liquor discharge port is communicated with the mother liquor pool through a centrifugal liquor conveying pipeline 700. The thickener concentrates the salt solution and the centrifuge centrifugally precipitates the salt solution, and then the upper liquid flows into the mother liquid pool through the overflow pipeline and the centrifugal liquid conveying pipeline respectively to realize the recovery of the water body.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A crystallized salt dewatering system is characterized by comprising a thickener (100), a centrifuge (200), a flushing pipeline (300) and a controller (400), wherein the centrifuge is located below the thickener, a first feeding hole (101) is formed in the top of the thickener, a first discharging hole (102) is formed in the bottom of the thickener, a second feeding hole (201) is formed in the top of the centrifuge, a centrifugal liquid discharging hole (202) and a solid salt discharging hole (203) are formed in the bottom of the centrifuge, the first discharging hole in the bottom of the thickener is communicated with the second feeding hole in the top of the centrifuge through a discharging pipeline (500), a discharging valve (501) and an adjusting valve (502) are sequentially arranged on the discharging pipeline from top to bottom, the flushing pipeline is communicated with the discharging pipeline, a communicating point between the flushing pipeline and the discharging pipeline is located between the discharging valve and the adjusting valve, a flushing valve (301) is arranged on the flushing pipeline, the controller controls the opening and closing of the thickener, the centrifugal machine, the discharge valve, the regulating valve and the flushing valve.
2. A crystalline salt dewatering system as claimed in claim 1, wherein an agitator (103) is provided within the thickener and the controller controls the agitator to be turned on and off.
3. A crystalline salt dewatering system according to claim 1, characterised in that the thickener is provided with a blow valve (104) at its base.
4. A crystalline salt dewatering system according to claim 1, characterised in that the thickener is provided with a first exhaust duct (105) at the top.
5. A crystalline salt dewatering system as claimed in claim 1, wherein a second exhaust duct (204) is provided in the centrifuge.
6. A crystalline salt dewatering system as claimed in claim 1, wherein a mother liquor pond (600) is provided below the centrifuge.
7. A crystalline salt dewatering system as claimed in claim 6, wherein an overflow conduit (106) is provided on the external side wall of the thickener, the other end of the overflow conduit communicating with the mother liquor pond.
8. A crystalline salt dewatering system as claimed in claim 6, wherein the centrate outlet communicates with the mother liquor reservoir via a centrate transfer line (700).
9. A crystalline salt dewatering system according to claim 1, characterised in that a sight glass (503) is provided on the discharge conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111308486.1A CN114011593A (en) | 2021-11-05 | 2021-11-05 | Crystalline salt dewatering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111308486.1A CN114011593A (en) | 2021-11-05 | 2021-11-05 | Crystalline salt dewatering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114011593A true CN114011593A (en) | 2022-02-08 |
Family
ID=80061587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111308486.1A Pending CN114011593A (en) | 2021-11-05 | 2021-11-05 | Crystalline salt dewatering system |
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| Country | Link |
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| CN (1) | CN114011593A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110665249A (en) * | 2019-10-24 | 2020-01-10 | 昆山三一环保科技有限公司 | MVR high-salinity wastewater crystallization and salt discharge system and process method thereof |
| CN210287043U (en) * | 2019-06-28 | 2020-04-10 | 华北电力科学研究院有限责任公司西安分公司 | Centrifugal dehydration and drying system for evaporation concentration of crystallized salt |
| CN211705949U (en) * | 2019-10-24 | 2020-10-20 | 昆山三一环保科技有限公司 | MVR high-salt wastewater crystallization and salt discharge system |
| CN112010392A (en) * | 2020-09-21 | 2020-12-01 | 北京今大禹环境技术股份有限公司 | Crystallized salt separation system in high organic matter crystallized salt solution |
| CN112794401A (en) * | 2021-01-28 | 2021-05-14 | 昆山三一环保科技有限公司 | Waste water crystallization salt-yielding system and control method thereof |
-
2021
- 2021-11-05 CN CN202111308486.1A patent/CN114011593A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210287043U (en) * | 2019-06-28 | 2020-04-10 | 华北电力科学研究院有限责任公司西安分公司 | Centrifugal dehydration and drying system for evaporation concentration of crystallized salt |
| CN110665249A (en) * | 2019-10-24 | 2020-01-10 | 昆山三一环保科技有限公司 | MVR high-salinity wastewater crystallization and salt discharge system and process method thereof |
| CN211705949U (en) * | 2019-10-24 | 2020-10-20 | 昆山三一环保科技有限公司 | MVR high-salt wastewater crystallization and salt discharge system |
| CN112010392A (en) * | 2020-09-21 | 2020-12-01 | 北京今大禹环境技术股份有限公司 | Crystallized salt separation system in high organic matter crystallized salt solution |
| CN112794401A (en) * | 2021-01-28 | 2021-05-14 | 昆山三一环保科技有限公司 | Waste water crystallization salt-yielding system and control method thereof |
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