CN109019650A - A kind of production method and production system of high-purity polyaluminium chloride - Google Patents
A kind of production method and production system of high-purity polyaluminium chloride Download PDFInfo
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- CN109019650A CN109019650A CN201811158947.XA CN201811158947A CN109019650A CN 109019650 A CN109019650 A CN 109019650A CN 201811158947 A CN201811158947 A CN 201811158947A CN 109019650 A CN109019650 A CN 109019650A
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- polyaluminium chloride
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/48—Halides, with or without other cations besides aluminium
- C01F7/56—Chlorides
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The invention discloses the production systems and production method of a kind of high-purity polyaluminium chloride, the system includes proportioner, reaction unit, after-treatment device, collection vessel and heat-exchanger rig, the heat-exchanger rig is connected to the outlet of proportioner, the entrance of reaction unit, the outlet of reaction unit and the entrance of after-treatment device, the raw material mixed liquor of outlet input through proportioner, pass through heat-exchanger rig, with the reaction product of the outlet input of reacted device, exchange heat；Raw material mixed liquor after heating, the entrance of reacted device are input in reaction unit；The entrance of reaction product after cooling, post-treated device is input in after-treatment device.Operation system structure provided by the invention is easy, thermal energy is exchanged using heat-exchanger rig, reaction heat and product heat is made full use of, avoids lasting heating and temperature reduction technology, polyaluminium chloride is prepared for continuous and automatic, preparation method is high-efficient, and low energy consumption, energy conservation, environmental protection, product purity is high, high-quality, meets GB15892-2009 national standard.
Description
Technical field
The present invention relates to the production methods of inorganic high efficient water purification agent, and in particular to a kind of production method of high-purity polyaluminium chloride
And production system.
Background technique
Polyaluminium chloride (Poly aluminum Chloride), abbreviation PAC, commonly referred to as water purification agent or coagulant, it
It is between AlCl3With Al (OH)3Between a kind of water-soluble inorganic high molecular polymer, by hydroxyl ion functional group and more
The effect of valence anionic polymerisation functional group, produces the inorganic polymer for possessing macromolecule and high charge.Its chemical general formula is
[Al2(OH)nCl6-n] m (in formula, 1≤n≤5, m≤10), wherein m represents extent of polymerization, n indicate PAC product neutral degree its
Middle m represents extent of polymerization, and n indicates the neutral degree of PAC product.Polyaluminium chloride has stronger bridge formation adsorptivity, in hydrolytic process
In with the physico variation such as electrochemistry, cohesion, absorption and precipitating, ultimately generate [Al2(OH)3(OH)3], to reach purification
Purpose.
Liquid polyaluminium chloride is more and more extensive as the use of water treatment agent, makees shared by coagulant in drinking water treatment
Share is increasing.Liquid polyaluminium chloride production method generally uses aluminum-containing raw material to react with hydrochloric acid, through solid-liquor separation or directly
Basicity is adjusted with calcium aluminate powder, is obtained through solid-liquor separation.Production process is discontinuous, and production efficiency is not high.And it needs
Persistently reaction kettle is heated, and is cooled down to reactor product.With the continuous improvement of human cost, production cost is controlled, improves labor
Dynamic productivity, production technology use automation control, have been trends of the times using energy conservation and environmental protection technique.
Summary of the invention
Present invention aim to address the production predicament of current polyaluminium chloride, a kind of energy-saving and environmental protection, high-efficient life are provided
Production system and production method.
In order to achieve the above object, the present invention provides a kind of production system of high-purity polyaluminium chloride, which includes to match
Expect device, reaction unit, after-treatment device and collection vessel, wherein the system also includes: heat-exchanger rig, which connects
The logical outlet of proportioner, the entrance of reaction unit, the outlet of reaction unit and the entrance of after-treatment device, through proportioner
The raw material mixed liquor for exporting input, the reaction product inputted by heat-exchanger rig, the outlet with reacted device, exchanges heat；
Raw material mixed liquor after heating, the entrance of reacted device are input in reaction unit；Reaction product after cooling, it is post-treated
The entrance of device is input in after-treatment device.
Preferably, the reaction unit selects the more paddle reaction kettles of one-pot, it includes:
Reaction kettle shell；
Central reaction portion is located at reaction kettle center, is limited by coaming plate；And
Separate the reacting part one and reacting part two that limit by first partition and second partition；
Wherein, aperture is arranged in the second partition lower part, enables reacting part one and two one-way flow of reacting part；Center
Aperture is arranged in coaming plate lower part between reacting part and reacting part two, so that reacting part two and the one-way flow of central reaction portion；It is described
Reacting part one include several reaction zones by third baffle interval, which is provided with overflow hole, so that instead
Answer each reaction zone energy one-way flow in portion one.
Preferably, each reaction zone of the reacting part one, reacting part two and central reaction portion be provided with it is independent
Agitating device.
Preferably, the heat-exchanger rig selects graphite heat exchanger.
Preferably, the graphite heat exchanger selects plate heat exchanger or double pipe heat exchanger.
Preferably, the after-treatment device is connected to proportioner pipeline, match for not molten aluminium hydroxide to be input to
It is continued to use in material device.
Preferably, the after-treatment device includes filter device.
Preferably, the filter device selects filter press.
The present invention also provides a kind of production method of high-purity polyaluminium chloride, this method uses above-mentioned production system, packet
Containing following steps:
Step 1, aluminium hydroxide and hydrochloric acid are added separately in proportioner, are uniformly mixed, obtain raw material mixed liquor, passed through
Heat-exchanger rig is input in reaction unit；
Step 2, the temperature that heating reaction unit is needed to reaction, is chemically reacted；
Step 3, reaction product is extracted out, is exchanged heat through heat-exchanger rig and raw material mixed liquor, the raw material mixed liquor after heating, warp
The entrance of reaction unit is input in reaction unit, for carrying out next round chemical reaction；Reaction product after cooling, after
The entrance of reason device is input in after-treatment device, for being post-processed；
Step 4, solid-liquor separation processing is carried out using after-treatment device to the reaction product after cooling, supernatant is input to receipts
Collect in container, obtains high-purity polyaluminium chloride.
Preferably, the step 5 also includes: the sediment of solid-liquor separation processing is input in proportioner with again
It uses.
Operation system structure provided by the invention is easy, exchanges thermal energy using heat-exchanger rig, makes full use of reaction heat and production
Product heat, avoids lasting heating and temperature reduction technology, can be used for continuous and automatic and prepare polyaluminium chloride, and preparation method is high-efficient,
Low energy consumption, energy conservation, environmental protection, and the product purity of preparation is high, high-quality, meets GB15892-2009 national standard.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the production system of high-purity polyaluminium chloride of the invention.
Fig. 2 is the structural schematic diagram for the reaction unit that production system of the invention uses.
Specific embodiment
Below in conjunction with drawings and examples, the following further describes the technical solution of the present invention.
It is as shown in Figure 1 a kind of production system of high-purity polyaluminium chloride of the invention, which includes proportioner 1, changes
Thermal 2, reaction unit 3, after-treatment device 4 and collection vessel 5.
The heat-exchanger rig 2 be connected to the outlet of proportioner 1, the entrance of reaction unit 3, reaction unit 3 outlet and
The entrance of after-treatment device 4.The raw material mixed liquor (mixed liquor of aluminium hydroxide and hydrochloric acid) of outlet input through proportioner 1,
The reaction product inputted by heat-exchanger rig 2, the outlet with reacted device 3, exchanges heat；Raw material mixed liquor after heating,
The entrance of reacted device 3 is input in reaction unit 3, for being chemically reacted；Reaction product after cooling, it is post-treated
The entrance of device 4 is input in after-treatment device 4, for being post-processed.
The after-treatment device 4 is connected to 1 pipeline of proportioner, for not molten aluminium hydroxide to be input to proportioner
In continue to use.
The heat-exchanger rig 2 selects graphite heat exchanger.In some embodiments, the graphite heat exchanger selects board-like change
Hot device or double pipe heat exchanger.
The after-treatment device includes filter device.In some embodiments, the filter device selects filter press.
The reaction unit selects the more paddle reaction kettles of one-pot as shown in Figure 2, it includes:
Reaction kettle shell 10；
Central reaction portion 20 is located at reaction kettle center, is limited by coaming plate 21；And
Separate the reacting part 1 and reacting part 2 40 that limit, the first partition by first partition 31 and second partition 32
31, second partition 32 is arranged between coaming plate 21 and reaction kettle shell 10.
Wherein, which completely cut off reacting part 1 and reacting part 2 40 completely, due in reacting part 2 40
Reaction is completed, in order to avoid overflow is into reacting part 1；Aperture (e.g., being arranged in lower part) is arranged in the second partition 32, makes
It obtains reacting part 1 and reacting part 2 40 can one-way flow (solution is flowed into reacting part two by reacting part one)；Central reaction portion 20
Aperture is arranged in coaming plate between reacting part 2 40, enable reacting part 2 40 and 20 one-way flow of central reaction portion (solution by
Reacting part two is flowed into central reaction portion), it is preferable that coaming plate between the central reaction portion 20 and reacting part 2 40 is opened
Hole is arranged in lower part；The central reaction portion 20, reacting part 1, reacting part 2 40 are provided with agitating device 50.
The reacting part 1 includes several reaction zones being spaced by third partition 33, which is provided with solely
Vertical agitating device is provided with overflow hole on the third partition 33, enables each reaction zone one-way flow in reacting part 1
It is logical, it is preferable that the top of third partition 33 is arranged in the overflow hole on the third partition 33.
The purpose of setting of second partition 32, the third partition 33 is in order not to allow material quickly to enter next reaction
Area, to ensure the reaction time.
The coaming plate 21 can be rectangular or round, it is preferable that the coaming plate 21 is cylindrical shape.
Reaction unit of the invention uses the more paddle reaction kettles of one-pot, and more agitating devices are installed in the same reaction kettle,
Multiple reaction zones are formed, achieve the purpose that automated production -- raw material are uniformly added into the first reaction zone is round-the-clock, often
There is partition between a reaction zone, the partition between the first reaction zone and final reaction zone is not connected to, and makes material by multiple reactions
Qu Hou reacts completeness close to 100%.The more paddle reaction systems of the one-pot are convenient from complete for continuously preparing liquid polyaluminium chloride
It exchanges heat at the central reaction portion extraction product of reaction with raw material mixed liquor, the cooling work of reaction product is not only omitted
Skill reduces energy consumption, is also used to heat raw material mixed liquor for the thermal energy, reduces the heating stepses to reaction raw materials, not only more
Safety, also as save energy consumption, after reaction starts, in this way it is no longer necessary to heat to reaction kettle, take full advantage of reaction heat and product
Heat.
Embodiment
The production method of a kind of high-purity polyaluminium chloride of the invention, using above-mentioned production system comprising the steps of:
Step 1, contain Al for 3000 kilograms2O3For 60% industrial aluminium hydroxide (wet-milling) and 6850 kilogram 31% of synthesis
Hydrochloric acid is added separately in proportioner, is uniformly mixed, is obtained raw material mixed liquor, and the pipeline through heat-exchanger rig is input to reaction dress
Set the reaction zone in the reacting part 1 of (8000 liters of glassed steel reaction vessels) close to first partition 31；
Step 2, it pressurizes to reaction kettle, stirs simultaneously；
Step 3, the temperature that heating reaction unit is needed to reaction, is chemically reacted, exothermic reaction temperature may be up to 140
℃；
Step 4, the extraction product from center reacting part 20 exchanges heat through heat-exchanger rig and raw material mixed liquor, after heating
Raw material mixed liquor (up to 120 DEG C), the entrance of reacted device is input in reaction unit (close in reacting part 1
The reaction zone of one partition 31), without reheating, carry out next round chemical reaction；Reaction product after cooling, post-treated device
Entrance be input in after-treatment device, for being post-processed；
Step 5, the reaction product after cooling is handled using after-treatment device (such as filter press), carries out solid-liquor separation, supernatant
Liquid is input in collection vessel, obtains high-purity polyaluminium chloride；The basicity of the liquid polyaluminium chloride product is accorded with up to 45% or more
Close GB15892-2009 national standard.In use, being also diluted with water to the concentration of various needs.
Further, sediment that step 5 separates (a small amount of undissolved aluminium hydroxide) can be input in proportioner with
It reuses.
In technique of the invention, continual to be added to one-pot more through metering pump uniformly continuous for hydrochloric acid, aluminium hydroxide slurry
In the first reaction zone (close to the reaction zone of first partition 31 in reacting part one) of paddle reaction kettle, pressurization is chemically reacted, instead
Should stop certain time from top overflow enter next reaction zone, the reaction was continued stop certain time from top overflow enter it is next
Reaction zone.Reaction complete material through can computer-controlled pressure pump continuously extract out, through heat-exchanger rig, mixed with raw material
Liquid exchanges heat, and the reaction product after cooling carries out solid-liquor separation, when full close to pressure, switches to next filter device, mother liquor
As product liquid polyaluminium chloride.
In conclusion operation system structure provided by the invention is easy, it can be used for continuous and automatic and prepare polyaluminium chloride, and
Preparation method is high-efficient, and low energy consumption, makes full use of reaction heat and product heat, the product purity of energy conservation, environmental protection, preparation is high, quality
It is good, meet GB15892-2009 national standard.
It is discussed in detail although the contents of the present invention have passed through above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read above content, for of the invention
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. a kind of production system of high-purity polyaluminium chloride, which includes proportioner, reaction unit, after-treatment device and collection
Container, which is characterized in that the system also includes: heat-exchanger rig, the heat-exchanger rig are connected to the outlet of proportioner, reaction unit
The entrance of entrance, the outlet of reaction unit and after-treatment device, the raw material mixed liquor of the outlet input through proportioner, by changing
Thermal, the reaction product with the outlet input of reacted device, exchanges heat；Raw material mixed liquor after heating, reacted dress
The entrance set is input in reaction unit；The entrance of reaction product after cooling, post-treated device is input to after-treatment device
In.
2. the production system of high-purity polyaluminium chloride as described in claim 1, which is characterized in that the reaction unit selects single
The more paddle reaction kettles of kettle, it includes:
Reaction kettle shell；
Central reaction portion is located at reaction kettle center, is limited by coaming plate；And
Separate the reacting part one and reacting part two that limit by first partition and second partition；
Wherein, aperture is arranged in the second partition lower part, enables reacting part one and two one-way flow of reacting part；Central reaction
Aperture is arranged in coaming plate lower part between portion and reacting part two, so that reacting part two and the one-way flow of central reaction portion；Described is anti-
Answering portion one includes several reaction zones by third baffle interval, which is provided with overflow hole, so that reacting part
Each reaction zone energy one-way flow in one.
3. the production system of high-purity polyaluminium chloride as claimed in claim 2, which is characterized in that each of described reacting part one
Reaction zone, reacting part two and central reaction portion are provided with independent agitating device.
4. the production system of high-purity polyaluminium chloride as described in claim 1, which is characterized in that the heat-exchanger rig selects stone
Black heat exchanger.
5. the production system of high-purity polyaluminium chloride as claimed in claim 4, which is characterized in that the graphite heat exchanger is selected
Plate heat exchanger or double pipe heat exchanger.
6. the production system of high-purity polyaluminium chloride as described in claim 1, which is characterized in that the after-treatment device with match
Expect the connection that installs pipes, is continued to use for not molten aluminium hydroxide to be input in proportioner.
7. the production system of high-purity polyaluminium chloride as described in claim 1, which is characterized in that the after-treatment device includes
Filter device.
8. the production system of high-purity polyaluminium chloride as claimed in claim 7, which is characterized in that the filter device selects pressure
Filter.
9. a kind of production method of high-purity polyaluminium chloride, which is characterized in that this method is using any one of claim 1-8 institute
The production system stated comprising the steps of:
Step 1, aluminium hydroxide and hydrochloric acid are added separately in proportioner, are uniformly mixed, raw material mixed liquor are obtained, through exchanging heat
Device is input in reaction unit；
Step 2, the temperature that heating reaction unit is needed to reaction, is chemically reacted；
Step 3, reaction product is extracted out, is exchanged heat through heat-exchanger rig and raw material mixed liquor, the raw material mixed liquor after heating is reacted
The entrance of device is input in reaction unit, for carrying out next round chemical reaction；Reaction product after cooling, post-treated dress
The entrance set is input in after-treatment device, for being post-processed；
Step 4, solid-liquor separation processing is carried out using after-treatment device to the reaction product after cooling, supernatant, which is input to collection, to be held
In device, high-purity polyaluminium chloride is obtained.
10. the production method of high-purity polyaluminium chloride as claimed in claim 9, which is characterized in that the step 5 also includes:
The sediment of solid-liquor separation processing is input in proportioner to reuse.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811158947.XA CN109019650A (en) | 2018-09-30 | 2018-09-30 | A kind of production method and production system of high-purity polyaluminium chloride |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811158947.XA CN109019650A (en) | 2018-09-30 | 2018-09-30 | A kind of production method and production system of high-purity polyaluminium chloride |
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| CN109019650A true CN109019650A (en) | 2018-12-18 |
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| CN201811158947.XA Pending CN109019650A (en) | 2018-09-30 | 2018-09-30 | A kind of production method and production system of high-purity polyaluminium chloride |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200978239Y (en) * | 2006-01-05 | 2007-11-21 | 王小军 | Self-control modernization production device for high-purity nano polymeric aluminum chloride |
| CN101734703A (en) * | 2008-11-26 | 2010-06-16 | 天津天水净水材料有限责任公司 | Device and method for preparing high-purity nano polyaluminium chloride with high efficiency, energy saving and environmental protection |
| CN102849769A (en) * | 2012-09-24 | 2013-01-02 | 长沙理工大学 | Method and device capable of simultaneously providing various clean heat sources to prepare polyaluminum chloride |
| CN105692670A (en) * | 2016-04-29 | 2016-06-22 | 上海高桥大同净水材料有限公司 | Single-kettle multi-paddle reaction system and method for preparing liquid polyaluminium chloride through same |
| CN206847430U (en) * | 2017-06-26 | 2018-01-05 | 内蒙古永江佳源科技有限责任公司 | A kind of aluminium polychloride preparation graphite heat exchanger |
| CN207046878U (en) * | 2017-06-28 | 2018-02-27 | 山东天健水处理科技有限公司 | Hot-blast stove fume comprehensive utilization device in a kind of aluminium polychloride production |
-
2018
- 2018-09-30 CN CN201811158947.XA patent/CN109019650A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200978239Y (en) * | 2006-01-05 | 2007-11-21 | 王小军 | Self-control modernization production device for high-purity nano polymeric aluminum chloride |
| CN101734703A (en) * | 2008-11-26 | 2010-06-16 | 天津天水净水材料有限责任公司 | Device and method for preparing high-purity nano polyaluminium chloride with high efficiency, energy saving and environmental protection |
| CN102849769A (en) * | 2012-09-24 | 2013-01-02 | 长沙理工大学 | Method and device capable of simultaneously providing various clean heat sources to prepare polyaluminum chloride |
| CN105692670A (en) * | 2016-04-29 | 2016-06-22 | 上海高桥大同净水材料有限公司 | Single-kettle multi-paddle reaction system and method for preparing liquid polyaluminium chloride through same |
| CN206847430U (en) * | 2017-06-26 | 2018-01-05 | 内蒙古永江佳源科技有限责任公司 | A kind of aluminium polychloride preparation graphite heat exchanger |
| CN207046878U (en) * | 2017-06-28 | 2018-02-27 | 山东天健水处理科技有限公司 | Hot-blast stove fume comprehensive utilization device in a kind of aluminium polychloride production |
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