CN103893990A - Process and equipment for crystallizing inorganic salt into large salt particles - Google Patents
Process and equipment for crystallizing inorganic salt into large salt particles Download PDFInfo
- Publication number
- CN103893990A CN103893990A CN201410138538.9A CN201410138538A CN103893990A CN 103893990 A CN103893990 A CN 103893990A CN 201410138538 A CN201410138538 A CN 201410138538A CN 103893990 A CN103893990 A CN 103893990A
- Authority
- CN
- China
- Prior art keywords
- salt
- mother liquor
- tank
- particle diameter
- brilliant
- 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.)
- Granted
Links
Landscapes
- Seasonings (AREA)
Abstract
The invention discloses a process and equipment for crystallizing inorganic salt into large salt particles. The process comprises the following steps of enabling an inorganic salt solution to enter a circulation pipeline from a feed opening, delivering the inorganic salt solution by using a circulation pump, heating the inorganic salt solution by using a heating chamber, enabling the inorganic salt solution to enter an evaporation tank through an upper circulation opening, performing evaporative crystallization to separate salt particles to obtain first salt-making mother liquor, enabling the salt particles and the first salt-making mother liquor to enter a crystal growth tank below the evaporation tank through an inner circulation tank opening in the bottom of the evaporation tank, and performing crystal growth in the crystal growth tank for 1 for 6 hours to obtain the large salt particles, small salt particles and second salt-making mother liquor; discharging the large salt particles from a salt outlet in the bottom of the crystal growth tank, discharging the small salt particles and part of the second salt-making mother liquor from a mother liquor discharge opening of the crystal growth tank, enabling the other part of the second salt-making mother liquor to enter the circulation pipeline through a lower circulation opening communicated with the crystal growth tank, delivering the second salt-making mother liquor entering the circulation pipeline by using the circulation pump, heating the second salt-making mother liquor entering the circulation pipeline by using the heating chamber, and enabling the heated second salt-making mother liquor to enter the evaporation tank through the upper circulation opening for the next round of cyclic evaporative crystallization, wherein the flow velocity in the circulation pipeline is controlled to be 0.6 to 2.0m/s, and the solid-liquid ratio is 10 to 35 percent.
Description
Technical field
The invention belongs to chemical process technical field, particularly a kind of taking inorganic salt solution as raw materials evaporate crystallization large particle diameter salt technique and equipment thereof.
Background technology
Current inorganic salts crystallization processes, generally uses direct circulation evaporimeter or contrary circulating evaporator.While wherein using direct circulation evaporimeter, bittern is entered by import, through the heating clamber heating of circulating pump conveying, steam inlet, bittern enters evaporator evaporative crystallization by upper cycling mouth and separates out salt, salt grain is discharged by salt outlet, and salt-making mother liquor is after lower circulation pipe, and some is discharged by mother liquor discharging opening, another part, through the heating clamber heating of circulating pump conveying, steam inlet, again enters evaporator by upper cycling mouth and carries out circulating and evaporating.But, in evaporation process, because residence time of material in tank is shorter, do not educate brilliant tank simultaneously and be unfavorable for eliminating small grains increase, produce salt particle diameter less (0.2-0.3mm).And in the time using contrary circulating evaporator, bittern is entered by import, through the heating clamber heating of circulating pump conveying, steam inlet, bittern enters evaporator evaporative crystallization by upper cycling mouth and separates out salt, salt grain is discharged by salt outlet, and salt-making mother liquor is after lower circulation pipe, and some is discharged by mother liquor discharging opening, another part, through the heating clamber heating of circulating pump conveying, steam inlet, enters evaporator circulating and evaporating by upper cycling mouth).But, in evaporation process, due to the small grains short circuit in slurry in tank, do not educate brilliant tank simultaneously and be unfavorable for eliminating small grains increase, produce large (0.1-0.4mm) of salt change of size scope.
Therefore, existing above-mentioned crystallization processes exists that inorganic salts particle diameter is little and to carry impurity component secretly higher, and then the storage time is short, need to add chemicals fluffy powder in order to prevent the problem of inorganic salts fouling, urgently to be resolved hurrily.
Summary of the invention
In order to address the above problem, the object of this invention is to provide the large particle diameter salt of a kind of inorganic salts crystallization technique, this technique salt crystallization particle diameter is large, and without adding chemical fluffy powder thereby without chemical contamination, and then be conducive to the safety of salt crystallization, extend the storage time.
Another object of the present invention is to provide the equipment of the large particle diameter salt of a kind of inorganic salts crystallization, uses this equipment can make salt crystallization particle diameter large, and then is conducive to salt crystallization safety, extends the storage time.
For achieving the above object, the present invention takes following technical scheme:
The large particle diameter salt of a kind of inorganic salts crystallization technique, comprises the following steps:
A. inorganic salt solution enters circulation line by charging aperture, carries, and heated by heating clamber through circulating pump, enters evaporator carry out evaporative crystallization by the upper cycling mouth of this circulation line, separates out salt grain and obtains the first salt-making mother liquor;
B. salt grain and the first salt-making mother liquor enter the brilliant tank of educating of below through the interior circulating tank mouth of this evaporator bottom, educate crystalline substance educating time of staying 1-6 hour in brilliant tank, educating the absolute degree of supersaturation of brilliant process control is 1-2g/l, obtains the salt grain of large particle diameter, salt grain and second salt-making mother liquor of small particle diameter;
C. the salt grain of large particle diameter is discharged by the salt outlet of educating brilliant pot bottom, the salt grain of small particle diameter and a second salt-making mother liquor part are discharged by the mother liquor discharging opening of educating brilliant tank, another part enters this circulation line through educating with this lower circulation port that brilliant tank is communicated with, and carry through this circulating pump, this heating clamber heating, finally enter this evaporator by this upper cycling mouth and carry out the crystallization of next round circulating and evaporating, controlling flow velocity in this circulation line is 0.6-2.0m/s, and solid-to-liquid ratio is 10-35%.
Further, described inorganic salt solution can be sodium chloride solution, metabisulfite solution or sodium nitrate etc.
The equipment using in the large particle diameter salt of inorganic salts crystallization technique, what comprise evaporator and be located at this evaporator below educates brilliant tank and circulation line;
This evaporator bottom is provided with interior circulating tank mouth, educates brilliant tank be communicated with this;
This is educated brilliant pot bottom and is provided with salt outlet, and top is provided with mother liquor discharging opening;
This circulation line is provided with charging aperture, and two ends are respectively equipped with upper cycling mouth and lower circulation port, educates brilliant tank be respectively communicated with this evaporator and this; In this circulation line, be provided with circulating pump, between this circulating pump and this upper cycling mouth, be provided with heating clamber.
The invention has the beneficial effects as follows: use the large particle diameter salt of inorganic salts crystallization of the present invention Processes and apparatus, can make salt crystallization particle diameter large, and without adding chemical fluffy powder thereby without chemical contamination, and then be conducive to the safety of salt crystallization, extend the storage time.
Brief description of the drawings
Fig. 1 is the large particle diameter salt of inorganic salts crystallization of the present invention process device structure schematic diagram.
Detailed description of the invention
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing and preferred embodiment.
As shown in Figure 1, the invention provides the equipment using in the large particle diameter salt of a kind of inorganic salts crystallization technique, comprise evaporator 1 and be located at the brilliant tank 2 of educating of this evaporator 1 below and circulation line 3.This evaporator 1 bottom is provided with interior circulating tank mouth 4, educates brilliant tank 2 be communicated with this.This is educated brilliant tank 2 bottoms and is provided with salt outlet 5, and top is provided with mother liquor discharging opening 6.This circulation line 3 is provided with charging aperture 7, and two ends are respectively equipped with upper cycling mouth 8 and lower circulation port 9, educates brilliant tank 2 be respectively communicated with this evaporator 1 and this.In this circulation line 3, be provided with circulating pump 10, between this circulating pump 10 and this upper cycling mouth 8, be provided with heating clamber 11.
The present invention separately provides a kind of concrete technology that utilizes the large particle diameter salt of the said equipment crystallization, and it comprises the following steps:
A. inorganic salt solution enters circulation line 3 by charging aperture 7, carries, and heated by heating clamber 11 through circulating pump 10, enters evaporator 1 carry out evaporative crystallization by the upper cycling mouth 8 of this circulation line 3, separates out salt grain and obtains the first salt-making mother liquor;
B. salt grain and the first salt-making mother liquor enter the brilliant tank 2 of educating of below through the interior circulating tank mouth 4 of this evaporator 1 bottom, educate crystalline substance educating the interior time of staying 1-6 hour of brilliant tank 2, educating the absolute degree of supersaturation of brilliant process control is 1-2g/l, obtains the salt grain of large particle diameter, salt grain and second salt-making mother liquor of small particle diameter;
C. the salt grain of large particle diameter is discharged by the salt outlet 5 of educating brilliant tank 2 bottoms, the salt grain of small particle diameter and a second salt-making mother liquor part are discharged by the mother liquor discharging opening 6 of educating brilliant tank 2, another part enters this circulation line 3 through educating with this lower circulation port 9 that brilliant tank 2 is communicated with, and carry through this circulating pump 10, this heating clamber 11 heats, finally enter this evaporator 1 by this upper cycling mouth 8 and carry out the crystallization of next round circulating and evaporating, controlling the interior flow velocity of this circulation line 3 is 0.6-2.0m/s, and solid-to-liquid ratio is 10-35%.
The present invention is taking inorganic salt solution solution as raw material, in evaporative crystallization technique process, educate brilliant tank evaporative crystallization technique by adopting contrary tape loop, control certain solid-to-liquid ratio (10-35%), the time of staying (1-6 hour), educate brilliant process and eliminate degree of supersaturation (controlling absolute degree of supersaturation 1-2g/l), controlled circulation speed (0.6-2.0m/s), can obtain coarsegrain (0.4-2.0mm) inorganic salts crystal, this technique can obtain coarsegrain inorganic salts, solve current ubiquitous inorganic salts particle diameter little and carry that impurity component is higher causes the storage time short secretly, need to add chemicals fluffy powder in order to prevent the problem of inorganic salts fouling, have and do not add chemical fluffy powder, without chemical contamination, be conducive to inorganic salts safety, extend the features such as storage time.
Below lift some specific embodiments to be further described.
Embodiment 1: adopt equipment of the present invention, taking bittern (sodium chloride-containing 300g/l) as raw material, the evaporation of conducting heat, controlling evaporation feed liquid circulates by 15% solid-to-liquid ratio, crystal stops 3 hours educating in brilliant tank, in controlled circulation pipeline, flowing velocity is 1.6m/s, and educating brilliant process elimination degree of supersaturation, controlling absolute degree of supersaturation is 2g/l, obtains the large particle diameter sodium chloride of 1mm.
Embodiment 2: adopt equipment of the present invention, taking glass gall (contains sodium sulfate 320g/l) as raw material, the evaporation of conducting heat, controlling evaporation feed liquid circulates by 20% solid-to-liquid ratio, crystal stops 4 hours educating in brilliant tank, in controlled circulation pipeline, flowing velocity is 1.5m/s, and educating brilliant process elimination degree of supersaturation, controlling absolute degree of supersaturation is 1.5g/l, obtains the large particle diameter sodium sulphate of 0.8mm.
Embodiment 3: adopt equipment of the present invention, taking sodium nitrate brine (containing sodium nitrate 200g/l) as raw material, the evaporation of conducting heat, controlling evaporation feed liquid circulates by 30% solid-to-liquid ratio, crystal is being educated brilliant tank stop 5 hours, in controlled circulation pipeline, flowing velocity is 1.4m/s, and educating brilliant process elimination degree of supersaturation, controlling absolute degree of supersaturation is 1g/l, obtains the large particle diameter sodium nitrate of 0.6mm.
The above, be only preferred embodiment of the present invention, not structure of the present invention done to any pro forma restriction.Any simple modification, equivalent variations and modification that every foundation technical spirit of the present invention is done above embodiment, all still belong in the scope of technical scheme of the present invention.
Claims (3)
1. the large particle diameter salt of an inorganic salts crystallization technique, is characterized in that: comprise the following steps:
A. inorganic salt solution enters circulation line by charging aperture, carries, and heated by heating clamber through circulating pump, enters evaporator carry out evaporative crystallization by the upper cycling mouth of this circulation line, separates out salt grain and obtains the first salt-making mother liquor;
B. salt grain and the first salt-making mother liquor enter the brilliant tank of educating of below through the interior circulating tank mouth of this evaporator bottom, educate crystalline substance educating time of staying 1-6 hour in brilliant tank, educating the absolute degree of supersaturation of brilliant process control is 1-2g/l, obtains the salt grain of large particle diameter, salt grain and second salt-making mother liquor of small particle diameter;
C. the salt grain of large particle diameter is discharged by the salt outlet of educating brilliant pot bottom, the salt grain of small particle diameter and a second salt-making mother liquor part are discharged by the mother liquor discharging opening of educating brilliant tank, another part enters this circulation line through educating with this lower circulation port that brilliant tank is communicated with, and carry through this circulating pump, this heating clamber heating, finally enter this evaporator by this upper cycling mouth and carry out the crystallization of next round circulating and evaporating, controlling flow velocity in this circulation line is 0.6-2.0m/s, and solid-to-liquid ratio is 10-35%.
2. the large particle diameter salt of inorganic salts crystallization according to claim 1 technique, is characterized in that: described inorganic salt solution is sodium chloride solution, metabisulfite solution or sodium nitrate.
3. the equipment using in the large particle diameter salt of inorganic salts crystallization technique as claimed in claim 1 or 2, is characterized in that: what comprise evaporator and be located at this evaporator below educates brilliant tank and circulation line;
This evaporator bottom is provided with interior circulating tank mouth, educates brilliant tank be communicated with this;
This is educated brilliant pot bottom and is provided with salt outlet, and top is provided with mother liquor discharging opening;
This circulation line is provided with charging aperture, and two ends are respectively equipped with upper cycling mouth and lower circulation port, educates brilliant tank be respectively communicated with this evaporator and this; In this circulation line, be provided with circulating pump, between this circulating pump and this upper cycling mouth, be provided with heating clamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410138538.9A CN103893990B (en) | 2014-04-08 | 2014-04-08 | Inorganic salts crystallization Large stone salt technique and equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410138538.9A CN103893990B (en) | 2014-04-08 | 2014-04-08 | Inorganic salts crystallization Large stone salt technique and equipment thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103893990A true CN103893990A (en) | 2014-07-02 |
| CN103893990B CN103893990B (en) | 2015-11-11 |
Family
ID=50985753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410138538.9A Active CN103893990B (en) | 2014-04-08 | 2014-04-08 | Inorganic salts crystallization Large stone salt technique and equipment thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103893990B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104445477A (en) * | 2014-11-06 | 2015-03-25 | 曾小芳 | Evaporative-crystallization salt making equipment and wastewater treatment system for treating high-salt organic wastewater |
| CN105817050A (en) * | 2016-05-27 | 2016-08-03 | 苏州乔发环保科技股份有限公司 | Spraying type separator |
| CN107149790A (en) * | 2017-05-24 | 2017-09-12 | 中国中轻国际工程有限公司 | The high-efficiency evaporating and crystallizing Processes and apparatus of adjustable crystal particle diameter |
| CN108837552A (en) * | 2018-08-24 | 2018-11-20 | 中盐工程技术研究院有限公司 | A kind of device producing macrogranule salt |
| CN109896535A (en) * | 2019-02-21 | 2019-06-18 | 中国中轻国际工程有限公司 | A kind of well mine salt Galuber's salt type brine production natural green edible salt technique |
| CN109896536A (en) * | 2017-12-11 | 2019-06-18 | 江苏苏盐井神股份有限公司 | A kind of technique that powder salt turns brilliant production certified products product salt |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4259819B2 (en) * | 2002-07-04 | 2009-04-30 | 三菱化学株式会社 | Crystallization method and crystallizer |
| CN201857276U (en) * | 2010-10-19 | 2011-06-08 | 四川蓝光伟业高新技术有限公司 | Crystallizing device for producing large-particle sodium chloride |
| CN202620768U (en) * | 2012-01-19 | 2012-12-26 | 杭州圣亚机械阀业有限公司 | Evaporative crystallization device |
| CN202724736U (en) * | 2012-05-16 | 2013-02-13 | 中化重庆涪陵化工有限公司 | Oslo crystallizer |
| CN103071310A (en) * | 2013-01-31 | 2013-05-01 | 江苏井神盐化股份有限公司 | Evaporating crystallizer |
| CN202961953U (en) * | 2012-12-19 | 2013-06-05 | 呼伦贝尔东北阜丰生物科技有限公司 | Efficient and energy-saving boiler for continuous crystallization of monosodium glutamate |
-
2014
- 2014-04-08 CN CN201410138538.9A patent/CN103893990B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4259819B2 (en) * | 2002-07-04 | 2009-04-30 | 三菱化学株式会社 | Crystallization method and crystallizer |
| CN201857276U (en) * | 2010-10-19 | 2011-06-08 | 四川蓝光伟业高新技术有限公司 | Crystallizing device for producing large-particle sodium chloride |
| CN202620768U (en) * | 2012-01-19 | 2012-12-26 | 杭州圣亚机械阀业有限公司 | Evaporative crystallization device |
| CN202724736U (en) * | 2012-05-16 | 2013-02-13 | 中化重庆涪陵化工有限公司 | Oslo crystallizer |
| CN202961953U (en) * | 2012-12-19 | 2013-06-05 | 呼伦贝尔东北阜丰生物科技有限公司 | Efficient and energy-saving boiler for continuous crystallization of monosodium glutamate |
| CN103071310A (en) * | 2013-01-31 | 2013-05-01 | 江苏井神盐化股份有限公司 | Evaporating crystallizer |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104445477A (en) * | 2014-11-06 | 2015-03-25 | 曾小芳 | Evaporative-crystallization salt making equipment and wastewater treatment system for treating high-salt organic wastewater |
| CN105817050A (en) * | 2016-05-27 | 2016-08-03 | 苏州乔发环保科技股份有限公司 | Spraying type separator |
| CN107149790A (en) * | 2017-05-24 | 2017-09-12 | 中国中轻国际工程有限公司 | The high-efficiency evaporating and crystallizing Processes and apparatus of adjustable crystal particle diameter |
| CN107149790B (en) * | 2017-05-24 | 2019-10-15 | 中国中轻国际工程有限公司 | The high-efficiency evaporating and crystallizing Processes and apparatus of adjustable crystal particle diameter |
| CN109896536A (en) * | 2017-12-11 | 2019-06-18 | 江苏苏盐井神股份有限公司 | A kind of technique that powder salt turns brilliant production certified products product salt |
| CN109896536B (en) * | 2017-12-11 | 2021-09-07 | 江苏苏盐井神股份有限公司 | Process for producing quality salt product by powder salt crystal transformation |
| CN108837552A (en) * | 2018-08-24 | 2018-11-20 | 中盐工程技术研究院有限公司 | A kind of device producing macrogranule salt |
| CN108837552B (en) * | 2018-08-24 | 2024-01-16 | 中盐工程技术研究院有限公司 | Device for producing large-particle salt |
| CN109896535A (en) * | 2019-02-21 | 2019-06-18 | 中国中轻国际工程有限公司 | A kind of well mine salt Galuber's salt type brine production natural green edible salt technique |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103893990B (en) | 2015-11-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103893990B (en) | Inorganic salts crystallization Large stone salt technique and equipment thereof | |
| CN104692575B (en) | Crystallization treatment method and device of high salt wastewater | |
| CN204417272U (en) | A kind of crystallization treatment device of high slat-containing wastewater | |
| CN107902823A (en) | The recovery and treatment method of the high-salt wastewater of sodium chloride-containing and sodium sulphate | |
| CN102674399B (en) | Two-effect scale-preventing evaporating and crystallizing device used for evaporating sodium chloride solution and operation method | |
| CN105236439B (en) | A kind of bulky grain boric acid and its continuous coo1ing recrystallization preparation technology and device | |
| CN104192917A (en) | Nickel-cobalt sulfate continuous-crystallizing process | |
| CN203959976U (en) | Strong brine function of mechanical steam recompression evaporation and crystallization system | |
| CN208626656U (en) | Ammonia process of desulfurization ammonium sulfate crystallization apparatus system | |
| CN104261432B (en) | The production method of the edible purified salt of a kind of ball-type | |
| CN204057987U (en) | Saltcake continuous seepage freezing and crystallizing device | |
| CN106379861B (en) | The production equipment and method of a kind of potassium hyperchlorate | |
| CN206304389U (en) | A kind of inorganic salts crystallize big particle diameter salt direct circulation evaporative crystallization tank | |
| CN109646988A (en) | A kind of freezing and crystallizing goes out the control system and its control method of salt partial size | |
| CN108046361A (en) | A kind of high power concentration distillation system for desalination and method based on induction crystallisation | |
| CN208617377U (en) | Crystal separator in potassium chloride magma | |
| CN204841004U (en) | Continuous crystallization equipment of phosphate | |
| CN209270883U (en) | A kind of sodium vanadate Continuous Cooling Crystallization equipment | |
| CN208320044U (en) | A kind of feed system of lithium hexafluoro phosphate crystallizer | |
| CN204034314U (en) | A kind of gluconic acid sodium salt crystallization apparatus | |
| CN103382035B (en) | Magnesium sulfate heptahydrate producing process with fully-continuous method | |
| CN110237558A (en) | A kind of integrated crystallization apparatus and method for crystallising with continuous fine crystal elimination circulation | |
| CN212941543U (en) | Multiple-effect evaporation system | |
| CN108467051A (en) | Crystal separator and method in potassium chloride magma | |
| CN204034313U (en) | A kind of gluconic acid sodium salt crystallization apparatus of efficient, energy-conservation, continuous discharge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20140702 Assignee: Xinjiang Yanhu Salt-producing Co., Ltd. Assignor: Zhongqing International Engineering Co., Ltd., China Contract record no.: 2017650000009 Denomination of invention: Process and equipment for crystallizing inorganic salt into large salt particles Granted publication date: 20151111 License type: Common License Record date: 20170802 |
|
| EE01 | Entry into force of recordation of patent licensing contract |