CN104445288B - A kind of reaction of sodium bicarbonate crystallizer - Google Patents
A kind of reaction of sodium bicarbonate crystallizer Download PDFInfo
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- CN104445288B CN104445288B CN201410716456.8A CN201410716456A CN104445288B CN 104445288 B CN104445288 B CN 104445288B CN 201410716456 A CN201410716456 A CN 201410716456A CN 104445288 B CN104445288 B CN 104445288B
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Abstract
The invention belongs to gas cleaning production field, and in particular to the preparation field of sodium acid carbonate, more particularly to a kind of reaction of sodium bicarbonate crystallizer, it is characterised in that include in sodium acid carbonate production and saltcake alkaline：Reactor body, liquid inlet opening, feeding-in solid body mouth, exhaust outlet, discharging opening, elutriation returning charge mouth, dissolving reaction zone, central tube, growth area, magma area and crystal region.
Description
Technical field
The invention belongs to gas cleaning production field, and in particular to bicarbonate in sodium acid carbonate production and saltcake alkaline
The preparation field of sodium, more particularly to a kind of reaction of sodium bicarbonate crystallizer.
Background technology
The present invention is a kind of system of sodium acid carbonate production, wherein relates generally to reactive crystallization, and reactive crystallization refers to gas
The process that chemical reaction produces indissoluble or insoluble solid matter is carried out between liquid or liquid and liquid.Reaction-crystallization method is permissible
The material for making some easily generate precipitation is separated with other compounds, so as to reach the purpose of purifying.Reaction crystallization process has Gao Xuan
The feature of selecting property, is usually used in the separating-purifying of product.
Consersion unit internal temperature, solution ph are easily controlled.Reaction crystalizer simple structure, energy consumption are low, and crystallize
Even particle size distribution, can produce the higher big crystalline substance of purity on request, and crystal grain is uniformly easy to filter, to the quality of product be one very
Big raising.
Reaction crystalizer inwall and guide shell partially polished with reduce knot wall phenomenon can join crystal cancellation element；Top is fine
Crystal is changed into supersaturated solution and returns crystallizer continuation crystallization after entering fine crystal elimination device.
For a long time, in the production of chemical industry sodium acid carbonate, reaction crystalizer pattern typically adopts autoclave full-mixing type
Crystallizer or crystal growth type crystallizer.
If Patent No. is CN200910102719.5, utility model is entitled：A kind of iodine crystallizer, its feature include
(1) using steel mesh PO as liner inside crystallizer；(2) chain-wales are set up at crystallizer cone bottom；(3) crystallizer has multiple
Oxidant addition point；(4) agitator of crystallizer is variable frequency adjustment pattern, changes agitator according to the feature of Crystallization process
Frequency；(5) eyesight is had on crystallizer wall；(6) hydraulic barrier is housed inside crystallizer, makes between crystal or crystal and device
Tiny crystal grains induction is produced when wall, agitator etc. are collided secondary nucleation occurs, allow the specific crystalline form of Crystallization.
As Patent No. CN201020275105.5, utility model is entitled：Crystallizer copper pipe protector of continuous casting, plucks
It is：The utility model is related to a kind of crystallizer copper pipe protector of continuous casting, and it is included inside crystallizer copper pipe the latter half
Dress crystallizer copper pipe protection lasso, in the protection lasso, vertical setting of types puts the cold steel of a pile, and cold steel is inserted in iron filings, and iron filings spreading is in dummy ingot
On the plank pad of boom end, the dummy bar head of dummy bar enters crystallizer copper pipe protection lasso through plank pad.
And for example Patent No. CN201320826851.2, utility model are entitled：Crystallizer stirring motor is made a summary：This reality
With new disclose a kind of with stirring liftout attachment can batch crystallisation crystallizer, including gripper shoe, electromagnetic cavity, crystallizer
And hydraulic press, gripper shoe bottom is fixedly connected with hydraulic press；Fore-set support bar is fixedly installed in gripper shoe, and fore-set supports masthead
Portion is fixedly connected with fore-set；Fore-set is arranged on crystalliser feet；Crystallizer side is provided with cooling water pipe, sets on the outside of cooling water pipe
It is equipped with electromagnetic cavity；Crystallizer top is provided with connecting plate for electric motor, and connecting plate for electric motor bottom is fixedly installed stirring motor, stirring electricity
Shaft is provided with machine, is provided with paddle on shaft.
Content of the invention
In order to solve defect of the prior art, a kind of reaction of sodium bicarbonate crystallizer that the present invention is provided.
A kind of reaction of sodium bicarbonate crystallizer, it is characterised in that include：Reactor body, liquid inlet opening, feeding-in solid body
Mouth, exhaust outlet, discharging opening, elutriation returning charge mouth, dissolving reaction zone, central tube, growth area, magma area and crystal region, described row
Gas port is arranged on the top on the right side of reactor body, and described feeding-in solid body mouth is arranged on the top in the left side of reactor body,
Described discharging opening is arranged on the bottom of reaction crystalizer, and described elutriation returning charge mouth is arranged on the right side in magma area, described
Liquid inlet opening is provided with dissolving reaction zone, described central tube, described growth area, magma area and crystal region are from top to bottom
Set gradually.
The ratio of described crystallizer equipment barrel height and device diameters is 4：2.
A kind of reaction of sodium bicarbonate crystallizer, it is characterised in that also include：Rolling bearing, stirring turbine, stirrer paddle,
Second stirrer paddle and teeter column, described rolling bearing, stirring turbine, stirrer paddle, the second stirrer paddle and teeter column
It is sequentially connected, the described blade of the second stirrer paddle is 1 with the ratio of the radius of stirrer paddle：2.
Described paddle includes two panels identical blade.
Described stirrer paddle a diameter of at this device diameters 1/2；The agitator in the middle steady and growth area of crystal Jie
For paddle propeller agitator, the second stirrer paddle a diameter of at this device diameters 1/3；The magma area stirring of foot is adopted
Take gate stirrer, stir frame a diameter of at this device diameters 1/2.
The top of the profile of described reactor body is the circular cylinder body with ellipse head, in reactor body under
Portion is the circular cylinder body with inverted round stage, and the bottom of reactor body is the magma area for collecting leg with magma.
A kind of described reaction of sodium bicarbonate crystallizer, it is characterised in that：The reaction crystalizer technology controlling and process is specially：
A. first liquid sodium salt solution enter reaction crystalizer before pipeline on, chain by electromagnetic flowmeter and pneumatic control valve
Realize the stability contorting of flow, the entrance of solid ammonium bicarbonate then chain realizes control warp by the feed rate of belt conveyer scale and sodium salt
Cross rotary valve and reaction crystalizer is entered, solid freezes the return of salt, then be plug two-stage material-pushing centrifuge or vacuum belt to be closed by horizontal
Formula filter is returned through spiral or belt conveyor after separating, and under normal condition, flow is basicly stable, it is not necessary to especially
Control；B. the control of the temperature of this reaction crystalizer, as the feeding temperature of the various materials of this crystallizer is all different, so lean on
The temperature of adjustment charging sodium salt solution achieves that the stability contorting of whole mould temperature, without external heat exchanger,
In the whole temperature controlled design of this reaction crystalizer, due to the heat release of metathesis reaction and the crystallization heat of sodium acid carbonate crystallization
All less, so typically ignoring；C. after all materials enter reaction crystalizer, solid in the reaction dissolving area on crystallizer top
Body dissolving is simultaneously reacted with sodium salt, enters the steady and growth area of crystallization Jie at middle part afterwards, finally enters the magma area of bottom, and be pumped
Go out to send into centrifuge and realize separation of solid and liquid；D. as apllied reaction crystalizer is continuous crystalizer, so described above
Process is all synchronous in the actual moving process of equipment to be carried out, and allows whole system to realize simply by rational technology controlling and process
A kind of dynamic equilibrium；Solid ammonium bicarbonate blanking is by rotary valve and belt weigher is chain, belt weigher and liquid sodium salt
Feed rate is chain to realize stablizing for charging.
A kind of described reaction of sodium bicarbonate crystallizer, it is characterised in that：In production reaction, sodium salt solution enters per hour
Stream amount：6.5 m3—7 m3, feeding temperature：50℃—60℃.
A kind of described reaction of sodium bicarbonate crystallizer, it is characterised in that：In production reaction, solid ammonium bicarbonate feeds intake
Amount：2.2t/h, temperature：Environment temperature；Solid freezes salt back amount：4t/h, temperature：0℃；Sodium acid carbonate discharging reactor effluent stream per hour
Amount：9 m3—10 m3.
Beneficial effects of the present invention：
The present invention is a kind of system of sodium acid carbonate production, wherein relates generally to reactive crystallization, and reactive crystallization refers to gas
The process that chemical reaction produces indissoluble or insoluble solid matter is carried out between liquid or liquid and liquid.Reaction-crystallization method is permissible
The material for making some easily generate precipitation is separated with other compounds, so as to reach the purpose of purifying.Reaction crystallization process has Gao Xuan
The feature of selecting property, is usually used in the separating-purifying of product.
Consersion unit internal temperature, solution ph are easily controlled.Reaction crystalizer simple structure, energy consumption are low, and crystallize
Even particle size distribution, can produce the higher big crystalline substance of purity on request, and crystal grain is uniformly easy to filter, to the quality of product be one very
Big raising.
Reaction crystalizer inwall and guide shell partially polished with reduce knot wall phenomenon can join crystal cancellation element；Top is fine
Crystal is changed into supersaturated solution and returns crystallizer continuation crystallization after entering fine crystal elimination device.
The present invention is a kind of full combination for mixing type crystallizer and growing crystallizer.Existing entirely mixed type mold structure
Simply, equipment takes up an area the advantage that little, operational control is easy, operational efficiency is high, and embodies growing crystallization to a great extent
Device crystal grain is relatively coarse, the relatively uniform advantage of Lens capsule.
Reference：
Reactor body 1, liquid inlet opening 102, feeding-in solid body mouth 103, exhaust outlet 104, discharging opening 105, elutriation returning charge
Mouthfuls 106, dissolving reaction zone 2, central tube 3, growth area 4, magma area 5, crystal region 6, stirrer paddle 9, the second stirrer paddle 901,
Teeter column 10；
Fig. 1 is the overall structure figure of the present invention；
Fig. 2 is operational flowchart of the present invention.
Specific embodiment：
Embodiment 1：
A kind of reaction of sodium bicarbonate crystallizer, it is characterised in that include：Reactor body 1, liquid inlet opening 102, solid
Charging aperture 103, exhaust outlet 104, discharging opening 105, elutriation returning charge mouth 106, dissolving reaction zone 2, central tube 3, growth area 4, magma
Area 5 and crystal region 6, described exhaust outlet 104 are arranged on the top on 1 right side of reactor body, and described feeding-in solid body mouth 103 sets
The top in the left side of reactor body 1 is put, described discharging opening 105 is arranged on the bottom of reaction crystalizer 1, described elutriation
Returning charge mouth 106 is arranged on the right side in magma area 5, is provided with liquid inlet opening 102 on described dissolving reaction zone 2, described in
Heart cylinder 3, described growth area 4, magma area 5 and crystal region 6 are set gradually from top to bottom.
The ratio of described crystallizer equipment barrel height and device diameters is 4：2.
A kind of reaction of sodium bicarbonate crystallizer, it is characterised in that also include：Rolling bearing, stirring turbine, stirrer paddle
9th, the second stirrer paddle 901 and teeter column 10, described rolling bearing, stirring turbine, stirrer paddle 9, the second stirrer paddle
901 and teeter column 10 be sequentially connected, the blade of described the second stirrer paddle 901 is 1 with the ratio of the radius of stirrer paddle 9：2.
Described paddle 9 includes two panels identical blade.
Described stirrer paddle 9 a diameter of at this device diameters 1/2；The stirring in the middle steady and growth area 4 of crystal Jie
Device is paddle propeller agitator, the second stirrer paddle 901 a diameter of at this device diameters 1/3；The magma area of foot
Gate stirrer is taken in stirring, stir frame a diameter of at this device diameters 1/2.
The top of the profile of described reactor body 1 is the circular cylinder body with ellipse head, in reactor body 1
Bottom is the circular cylinder body with inverted round stage, and the bottom of reactor body 1 is the magma area 5 for collecting leg with magma.
Embodiment 2：
A kind of reaction of sodium bicarbonate crystallizer, it is characterised in that include：Reactor body 1, liquid inlet opening 102, solid
Charging aperture 103, exhaust outlet 104, discharging opening 105, elutriation returning charge mouth 106, dissolving reaction zone 2, central tube 3, growth area 4, magma
Area 5 and crystal region 6, described exhaust outlet 104 are arranged on the top on 1 right side of reactor body, and described feeding-in solid body mouth 103 sets
The top in the left side of reactor body 1 is put, described discharging opening 105 is arranged on the bottom of reaction crystalizer 1, described elutriation
Returning charge mouth 106 is arranged on the right side in magma area 5, is provided with liquid inlet opening 102 on described dissolving reaction zone 2, described in
Heart cylinder 3, described growth area 4, magma area 5 and crystal region 6 are set gradually from top to bottom.
The ratio of described crystallizer equipment barrel height and device diameters is 4：2.
A kind of reaction of sodium bicarbonate crystallizer, it is characterised in that also include：Rolling bearing, stirring turbine, stirrer paddle
9th, the second stirrer paddle 901 and teeter column 10, described rolling bearing, stirring turbine, stirrer paddle 9, the second stirrer paddle
901 and teeter column 10 be sequentially connected, the blade of described the second stirrer paddle 901 is 1 with the ratio of the radius of stirrer paddle 9：2.
Described paddle 9 includes two panels identical blade.
Described stirrer paddle 9 a diameter of at this device diameters 1/2；The stirring in the middle steady and growth area 4 of crystal Jie
Device is paddle propeller agitator, the second stirrer paddle 901 a diameter of at this device diameters 1/3；The magma area of foot
Gate stirrer is taken in stirring, stir frame a diameter of at this device diameters 1/2.
The top of the profile of described reactor body 1 is the circular cylinder body with ellipse head, in reactor body 1
Bottom is the circular cylinder body with inverted round stage, and the bottom of reactor body 1 is the magma area 5 for collecting leg with magma.
A kind of described reaction of sodium bicarbonate crystallizer, it is characterised in that：The reaction crystalizer technology controlling and process is specially：
A. first liquid sodium salt solution enter reaction crystalizer before pipeline on, chain by electromagnetic flowmeter and pneumatic control valve
Realize the stability contorting of flow, the entrance of solid ammonium bicarbonate then chain realizes control warp by the feed rate of belt conveyer scale and sodium salt
Cross rotary valve and reaction crystalizer is entered, solid freezes the return of salt, then be plug two-stage material-pushing centrifuge or vacuum belt to be closed by horizontal
Formula filter is returned through spiral or belt conveyor after separating, and under normal condition, flow is basicly stable, it is not necessary to especially
Control；B. the control of the temperature of this reaction crystalizer, as the feeding temperature of the various materials of this crystallizer is all different, so lean on
The temperature of adjustment charging sodium salt solution achieves that the stability contorting of whole mould temperature, without external heat exchanger,
In the whole temperature controlled design of this reaction crystalizer, due to the heat release of metathesis reaction and the crystallization heat of sodium acid carbonate crystallization
All less, so typically ignoring；C. after all materials enter reaction crystalizer, solid in the reaction dissolving area on crystallizer top
Body dissolving is simultaneously reacted with sodium salt, enters the steady and growth area of crystallization Jie at middle part afterwards, finally enters the magma area of bottom, and be pumped
Go out to send into centrifuge and realize separation of solid and liquid；D. as apllied reaction crystalizer is continuous crystalizer, so described above
Process is all synchronous in the actual moving process of equipment to be carried out, and allows whole system to realize simply by rational technology controlling and process
A kind of dynamic equilibrium；Solid ammonium bicarbonate blanking is by rotary valve and belt weigher is chain, belt weigher and liquid sodium salt
Feed rate is chain to realize stablizing for charging.
A kind of described reaction of sodium bicarbonate crystallizer, it is characterised in that：In production reaction, sodium salt solution enters per hour
Stream amount：6.5 m3—7 m3, feeding temperature：50℃—60℃.
A kind of described reaction of sodium bicarbonate crystallizer, it is characterised in that：In production reaction, solid ammonium bicarbonate feeds intake
Amount：2.2t/h, temperature：Environment temperature；Solid freezes salt back amount：4t/h, temperature：0℃；Sodium acid carbonate discharging reactor effluent stream per hour
Amount：9 m3—10 m3.
Claims (7)
1. a kind of reaction of sodium bicarbonate crystallizer, it is characterised in that include：Reactor body（1）, liquid inlet opening（102）, solid
Body charging aperture（103）, exhaust outlet（104）, discharging opening（105）, elutriation returning charge mouth（106）, dissolving reaction zone（2）, central tube
（3）, growth area（4）, magma area（5）And crystal region（6）, described exhaust outlet（104）It is arranged on reactor body（1）Right side
Top, affiliated feeding-in solid body mouth（103）It is arranged on reactor body（1）Left side top, described discharging opening（105）If
Put in reactor body（1）Bottom, described elutriation returning charge mouth（106）It is arranged on magma area（5）Right side, described dissolving
Reaction zone（2）On be provided with liquid inlet opening（102）, described central tube（3）, described growth area（4）, magma area（5）With
Crystal region（6）Set gradually from top to bottom, the ratio of described crystallizer equipment barrel height and device diameters is 4：2, rotary shaft
Hold, stir turbine, stirrer paddle（9）, the second stirrer paddle（901）And teeter column（10）, described rolling bearing, stirring whirlpool
Turbine, stirrer paddle（9）, the second stirrer paddle（901）And teeter column（10）It is sequentially connected, affiliated the second stirrer paddle
（901）Blade and stirrer paddle（9）Radius ratio be 1：2.
2. a kind of reaction of sodium bicarbonate crystallizer according to claim 1, it is characterised in that：Described stirrer paddle（9）
Including two panels identical blade.
3. a kind of reaction of sodium bicarbonate crystallizer according to claim 1, it is characterised in that：Described stirrer paddle（9）
A diameter of at this device diameters 1/2；Growth area（4）Agitator be paddle propeller agitator, described second stirring
Blade（901）A diameter of at this device diameters 1/3；Gate stirrer is taken in the magma area stirring of foot, and stirring frame is straight
Footpath is 1/2 of device diameters at this.
4. a kind of reaction of sodium bicarbonate crystallizer according to claim 1, it is characterised in that：Described reactor body
（1）The top of profile be circular cylinder body with ellipse head, reactor body（1）Middle and lower part be circle with inverted round stage
Shape cylinder, reactor body（1）Bottom be with magma collect leg magma area（5）.
5. a kind of reaction of sodium bicarbonate crystallizer according to claim 1, it is characterised in that：The reaction crystalizer technique
Control is specially：A. first liquid sodium salt solution enter reaction crystalizer before pipeline on, gentle by electromagnetic flowmeter
The chain stability contorting for realizing flow of dynamic regulating valve, the entrance of solid ammonium bicarbonate are then connected by the feed rate of belt conveyer scale and sodium salt
Lock and control is realized simultaneously through rotary valve entrance reaction crystalizer, solid freezes the return of salt, then be to close plug twin-stage pusher by horizontal
Centrifuge or vacuum band-type filter machine are returned through spiral or belt conveyor after separating, and under normal condition, flow is basic
Stable, it is not necessary to especially to control；B. the control of the temperature of this reaction crystalizer, due to the feeding temperature of the various materials of this crystallizer
All different, so the temperature by adjustment charging sodium salt solution achieves that the stability contorting of whole mould temperature, without
External heat exchanger is wanted, in the whole temperature controlled design of this reaction crystalizer, due to heat release and the carbonic acid of metathesis reaction
The crystallization heat of hydrogen sodium crystallization is all less, so ignoring；C. after all materials enter reaction crystalizer, on crystallizer top
Dissolving reaction zone solid dissolving is simultaneously reacted with sodium salt, enters the growth area at middle part afterwards, finally enters the magma area of bottom, and by pump
Extract feeding centrifuge out and realize separation of solid and liquid；D. as reaction crystalizer is continuous crystalizer, so procedure described above exists
All synchronously carry out in the actual moving process of equipment, allow whole system to realize simply by rational technology controlling and process a kind of dynamic
State is balanced；Solid ammonium bicarbonate blanking is by rotary valve and belt weigher is chain, belt weigher and liquid sodium salt feed stream
Amount is chain to realize stablizing for charging.
6. a kind of reaction of sodium bicarbonate crystallizer according to claim 5, it is characterised in that：In production reaction, sodium salt
Solution feed rate per hour：6.5 m3—7m3, feeding temperature：50℃—60℃.
7. a kind of reaction of sodium bicarbonate crystallizer according to claim 5, it is characterised in that：In production reaction, solid
Ammonium hydrogen carbonate inventory：2.2t/h, temperature：Environment temperature；Solid freezes salt back amount：4t/h, temperature：0℃；Sodium acid carbonate discharges
Discharging flow per hour：9 m3—10m3.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109052434B (en) * | 2018-10-19 | 2021-06-04 | 四川金象赛瑞化工股份有限公司 | Method for jointly producing soda ash and composite nitrogen fertilizer by taking mirabilite and ammonium bicarbonate as raw materials |
| CN109437248B (en) * | 2018-11-23 | 2021-06-04 | 四川金象赛瑞化工股份有限公司 | Method for joint production of soda ash and ammonium sulfate by using mirabilite and ammonium bicarbonate as raw materials |
| CN109694093A (en) * | 2018-12-13 | 2019-04-30 | 余小海 | A kind of heavy alkali high-efficiency production technology |
| CN115650259B (en) * | 2022-10-28 | 2024-02-09 | 天津大学 | Preparation method and device of large-particle sodium bicarbonate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1390213A (en) * | 1971-12-29 | 1975-04-09 | Olin Corp | Absorber-crystallizer |
| CN87217100U (en) * | 1987-12-29 | 1988-11-16 | 天津碱厂 | Crystallizer for producing heavy soda ash and sodium carbonate monohydrate |
| CN202155067U (en) * | 2011-06-10 | 2012-03-07 | 赵玉斌 | Improved DTB (draft-tube and baffle) type crystallizer |
| CN203724807U (en) * | 2014-01-08 | 2014-07-23 | 姜向前 | Seed tank |
| CN204237575U (en) * | 2014-12-02 | 2015-04-01 | 成都华西堂投资有限公司 | A kind of reaction of sodium bicarbonate crystallizer |
-
2014
- 2014-12-02 CN CN201410716456.8A patent/CN104445288B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1390213A (en) * | 1971-12-29 | 1975-04-09 | Olin Corp | Absorber-crystallizer |
| CN87217100U (en) * | 1987-12-29 | 1988-11-16 | 天津碱厂 | Crystallizer for producing heavy soda ash and sodium carbonate monohydrate |
| CN202155067U (en) * | 2011-06-10 | 2012-03-07 | 赵玉斌 | Improved DTB (draft-tube and baffle) type crystallizer |
| CN203724807U (en) * | 2014-01-08 | 2014-07-23 | 姜向前 | Seed tank |
| CN204237575U (en) * | 2014-12-02 | 2015-04-01 | 成都华西堂投资有限公司 | A kind of reaction of sodium bicarbonate crystallizer |
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| CN104445288A (en) | 2015-03-25 |
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