CN203683118U - Two-step reaction system for polyaluminum chloride production - Google Patents
Two-step reaction system for polyaluminum chloride production Download PDFInfo
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- CN203683118U CN203683118U CN201320753732.9U CN201320753732U CN203683118U CN 203683118 U CN203683118 U CN 203683118U CN 201320753732 U CN201320753732 U CN 201320753732U CN 203683118 U CN203683118 U CN 203683118U
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Abstract
The utility model discloses a two-step reaction system for polyaluminum chloride production. The system comprises an adjusting tank, an adjusting tank transition tank, a cooling tower, a separation tank, a separated residue storage tank, a flocculating agent preparation tank and a semi-finished product tank, wherein a calcium aluminate charging port and a one-step liquid charging port are formed in the adjusting tank; the adjusting tank is communicated with the adjusting tank transition tank; the adjusting tank transition tank is communicated with the inlet of the cooling tower through an adjusting liquid delivery pump; the outlet of the cooling tower is communicated with the separation tank; the flocculating agent preparation tank is communicated with the separation tank; the upper part of the separation tank is communicated with the semi-finished product tank, and the lower part of the separation tank is communicated with the separated residue storage tank. According to the two-step reaction system, insoluble substances generated in a polymerization reaction are subjected to coagulating sedimentation and settling separation, so that the content of insoluble substances in a reacting liquid can be effectively controlled and reduced, and the yield and quality of a polyaluminum chloride product can be improved; automatic monitoring control and continuous and automatic production can be realized due to the arrangement of an automatic monitoring control system.
Description
Technical field
The utility model belongs to poly aluminium chloride production technical field, relates to a kind of poly aluminium chloride and produces two step reactive systems.
Background technology
Poly aluminium chloride, is commonly called as water purification agent, has another name called polymerize aluminum chloride, is called for short poly-aluminium, english name PAC; It is the cationic inorganic polymer flocculant of a kind of poly-hydroxy, multinuclear complexing body, and solid phase prod outward appearance is sorrel, yellow or white solid powder, and its chemical molecular formula is [AL
2(OH)
ncL
6-n]
m(in formula, 1≤n≤5, m≤10), wherein m represents extent of polymerization, and n represents the neutral degree of PAC product, soluble in water, there is stronger bridge formation adsorptivity, in hydrolytic process, follow the physicsization such as electrochemistry, cohesion, absorption and precipitation to change, the final [AL that generates
2(OH)
3(OH)
3], thereby reach purification object.
The fundamental difference of poly aluminium chloride and traditional inorganic coagulant is that traditional inorganic coagulant is low molecular crystal salt, and the structure of poly aluminium chloride is made up of the changeable polynary carboxyl complex compound of form, flocculation sediment speed is fast, be suitable for pH value wide ranges, to pipe-line equipment non-corrosiveness, purifying water effect is obvious, can effectively prop up the heavy metal ion such as middle chromaticness SS, COD, BOD and arsenic, mercury that dewater, and this product is widely used in tap water, process water and sewage treatment area.
Poly aluminium chloride is divided into form and is divided into two kinds: a. liquid poly aluminium chloride is undried form, have and need not dilute, load and unload advantage easy to use, price is relatively cheap, shortcoming is traffic requirements tank car, and unit cost increases (solid per ton is equivalent to 2-3 ton liquid); B. solid poly aluminium chloride is dried form, has the advantage of convenient transportation, while not needing tank car, shortcoming to be use, also needs dilution, increases working strength.
The raw material of producing poly aluminium chloride mainly contains two large classes: a class is aluminum-containing mineral, comprises bauxite (gibbsite, boehmite, diaspore), clay, kaolin, alunite etc.; Another kind of is other aluminum-containing raw material, comprises metallic aluminium, aluminium scrap bits, grey aluminium, aluminium hydroxide, aluminum chloride, coal gangue, flyash etc.The method of producing at present poly aluminium chloride mainly contains metallic aluminium (comprising aluminium ash, lead skim) method, active aluminium hydroxide method, aluminium sesquioxide (comprising bauxitic clay, coal gangue etc.) method, crystal aluminum chloride method etc.
1. metallic aluminium method: adopt the raw material of the synthetic poly aluminium chloride of metallic aluminium method to be mainly the tankage that aluminium is processed, as aluminium bits, aluminium ash and aluminium slag etc.Under agitation slowly add according to a certain ratio hydrochloric acid to react by aluminium ash, make liquid aluminium polychloride through slaking polymerization, sedimentation, then through dilute filtration, concentrated, dry making.In technique, can be divided into 3 kinds of acid systems, alkaline process, neutralisation.Acid system is mainly that quality product is wayward with HCl; Alkaline process producting process difficulty is higher, and facility investment is large and alkali charge is large, and pH controls and takes raw material, and cost is higher; With maximum be neutralisation, as long as control proportioning well, generally can be up to state standards.
2. aluminium hydroxide method
The toxic substance content such as aluminium hydrate powder purity is higher, synthetic poly aluminium chloride heavy metal are low, generally adopt the acid-soluble production technique of heating and pressurizing.This technique is fairly simple, but the basicity of polymerize aluminum chloride of producing is lower, and therefore generally adopting aluminium hydroxide to heat, pressurization is acid-soluble adds in calcium aluminate breeze and two procedures.
3. aluminium sesquioxide method
Raw material containing aluminium sesquioxide mainly contains gibbsite, aluminium vanadine, kaolin, coal gangue etc.This production technique can be divided into two steps: the first step is to obtain crystal aluminum chloride, and second step is to obtain poly aluminium chloride by pyrolysis method or neutralisation.
4. aluminium chloride process
Adopting chlorination aluminium powder is Raw material processing poly aluminium chloride, and this method application is the most general.Available crystal aluminum chloride, in 170 ℃ of pyrolysis of seething with excitement, adds water cure polymerization, then through solidifying, dry making.
Built poly aluminium chloride production equipment at present, majority is the device that bauxitic clay and calcium aluminate two-step approach are produced poly aluminium chloride, it is in the acid-soluble reaction of the first step and second step polyreaction, capital produces a large amount of insolubless and is difficult to separate with reaction solution, causes insolubles severe overweight in final poly aluminium chloride product.Therefore, must improve existing poly aluminium chloride production equipment, particularly two step reactive systems wherein, effectively to control and to reduce the insolubles content in reaction solution, improve output and the quality of poly aluminium chloride product.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of poly aluminium chloride to produce two step reactive systems, effectively controls and reduces the insolubles content in reaction solution, improves output and the quality of poly aluminium chloride product.
For achieving the above object, the utility model provides following technical scheme:
Poly aluminium chloride of the present utility model is produced two step reactive systems, comprise modified pond, modified Chi Zhongzhuanchi, cooling tower, separate tank, separate slag saving pond, flocculating agent formulation tank and work in-process pond, described modified pond is provided with calcium aluminate charging opening and a step liquid charging opening, described modified pond is communicated with modified Chi Zhongzhuanchi, modified Chi Zhongzhuanchi is communicated with the entrance of cooling tower by modified liquid transferpump, the outlet of cooling tower is communicated with separate tank, flocculating agent formulation tank is communicated with separate tank, the top of separate tank is communicated with work in-process pond, the bottom of separate tank with separate slag saving pond be communicated with.
Further, described modified pond is provided with Waste gas outlet and vapor interface.
Further, described modified pond, separate tank, separation slag saving pond and flocculating agent formulation tank are equipped with agitator.
Further, described cooling tower is the cooling tower that is provided with induced draft fan.
Further, also comprise controller, described cooling tower is provided with temperature monitor and leve monitor, on the entrance and exit pipeline of described cooling tower, be equipped with magnetic valve, described temperature monitor, leve monitor and magnetic valve are all electrically connected with controller, described controller by pump driving circuit and modified liquid transferpump be electrically connected.
The beneficial effects of the utility model are:
1) the utility model is provided with separate tank, separates the devices such as slag saving pond and flocculating agent formulation tank in two step reactive systems, the insolubles producing in by coagulating sedimentation, settlement separate polyreaction in these devices, effectively control and reduced the insolubles content in reaction solution, having improved output and the quality of poly aluminium chloride product;
2) the utility model is also provided with automatic monitoring system processed, has realized automatic monitoring system, has realized serialization, automatic production.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and beneficial effect clearer, the utility model provides following accompanying drawing to describe:
Fig. 1 is the structural representation that poly aluminium chloride of the present utility model is produced two step reactive systems.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
Fig. 1 is the structural representation that poly aluminium chloride of the present utility model is produced two step reactive systems, as shown in the figure, poly aluminium chloride of the present utility model is produced two step reactive systems, comprise modified pond 1, transfer pond, modified pond 2, cooling tower 3, separate tank 4, separate slag saving pond 5, flocculating agent formulation tank 6 and work in-process pond 7, described modified pond 1 is provided with calcium aluminate charging opening 11 and a step liquid charging opening 12, described modified pond 1 is communicated with transfer pond, modified pond 2, transfer pond, modified pond 2 is communicated with the entrance of cooling tower 3 by modified liquid transferpump 8, the outlet of cooling tower 3 is communicated with separate tank 4, flocculating agent formulation tank 6 is communicated with separate tank 4, the top of separate tank 4 is communicated with work in-process pond 7, the bottom of separate tank 4 with separate slag saving pond 5 and be communicated with.One step liquid is added in modified pond 1, under agitation condition, progressively drop into the reaction of formula ratio calcium aluminate, after having reacted, material is interior after air cooling at cooling tower 3, entering separate tank 4 adds flocculation agent to carry out flocculation separation, after quiescent settling, supernatant liquor is put into work in-process pond 7, flocculation separation slag enters and separates in slag saving pond 5; By the insolubles producing in coagulating sedimentation, settlement separate polyreaction, effectively control and reduced the insolubles content in reaction solution, improve output and the quality of poly aluminium chloride product.
In the present embodiment, described modified pond 1 is provided with Waste gas outlet 13 and vapor interface 14.
In the present embodiment, described modified pond 1, separate tank 4, separation slag saving pond 5 and flocculating agent formulation tank 6 are equipped with agitator.
In the present embodiment, described cooling tower 3 is for being provided with the cooling tower of induced draft fan 31.
As further improvement of the utility model, two step reactive systems are also provided with controller 9, described cooling tower 3 is provided with temperature monitor 91 and leve monitor 92, on the entrance and exit pipeline of described cooling tower 3, be equipped with magnetic valve 93,94, described temperature monitor 91, leve monitor 92, magnetic valve 93 and magnetic valve 94 are all electrically connected with controller 9, described controller 9 by pump driving circuit 95 and modified liquid transferpump 8 be electrically connected.The liquid level signal of the cooling tower 3 that leve monitor 92 obtains monitoring transfers to controller 9; When the liquid level of cooling tower 3 is during in low liquid level, the magnetic valve 93 that controller 9 is controlled on cooling tower 3 entrance pipes is opened, and controls modified liquid transferpump 8 by pump driving circuit 95 and pump into material to cooling tower 3; When the liquid level of cooling tower 3 is during in high liquid level, magnetic valve 93 controlled by controller 9 and modified liquid transferpump 8 cuts out.The temperature of charge signal of the cooling tower 3 that temperature monitor 91 obtains monitoring transfers to controller 9; When the material of cooling tower 3 is cooled to after set(ting)value, the magnetic valve 94 that controller 9 is controlled on cooling tower 3 export pipelines is opened, and material is put into separate tank 4; When the temperature of charge of cooling tower 3 is during higher than set(ting)value, controller 9 controls magnetic valve 94 and cuts out.Realize automatic monitoring system, realized serialization, automatic production.
Finally explanation is, above preferred embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is described in detail by above preferred embodiment, but those skilled in the art are to be understood that, can make various changes to it in the form and details, and not depart from the utility model claims limited range.
Claims (5)
1. a poly aluminium chloride is produced two step reactive systems, it is characterized in that: comprise modified pond, modified Chi Zhongzhuanchi, cooling tower, separate tank, separate slag saving pond, flocculating agent formulation tank and work in-process pond, described modified pond is provided with calcium aluminate charging opening and a step liquid charging opening, described modified pond is communicated with modified Chi Zhongzhuanchi, modified Chi Zhongzhuanchi is communicated with the entrance of cooling tower by modified liquid transferpump, the outlet of cooling tower is communicated with separate tank, flocculating agent formulation tank is communicated with separate tank, the top of separate tank is communicated with work in-process pond, the bottom of separate tank with separate slag saving pond be communicated with.
2. poly aluminium chloride according to claim 1 is produced two step reactive systems, it is characterized in that: described modified pond is provided with Waste gas outlet and vapor interface.
3. poly aluminium chloride according to claim 1 is produced two step reactive systems, it is characterized in that: described modified pond, separate tank, separation slag saving pond and flocculating agent formulation tank are equipped with agitator.
4. poly aluminium chloride according to claim 1 is produced two step reactive systems, it is characterized in that: described cooling tower is the cooling tower that is provided with induced draft fan.
5. produce two step reactive systems according to the poly aluminium chloride described in claim 1 to 4 any one, it is characterized in that: also comprise controller, described cooling tower is provided with temperature monitor and leve monitor, on the entrance and exit pipeline of described cooling tower, be equipped with magnetic valve, described temperature monitor, leve monitor and magnetic valve are all electrically connected with controller, described controller by pump driving circuit and modified liquid transferpump be electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320753732.9U CN203683118U (en) | 2013-11-26 | 2013-11-26 | Two-step reaction system for polyaluminum chloride production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320753732.9U CN203683118U (en) | 2013-11-26 | 2013-11-26 | Two-step reaction system for polyaluminum chloride production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203683118U true CN203683118U (en) | 2014-07-02 |
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|---|---|---|---|
| CN201320753732.9U Expired - Fee Related CN203683118U (en) | 2013-11-26 | 2013-11-26 | Two-step reaction system for polyaluminum chloride production |
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|---|---|
| CN (1) | CN203683118U (en) |
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2013
- 2013-11-26 CN CN201320753732.9U patent/CN203683118U/en not_active Expired - Fee Related
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20171126 |
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| CF01 | Termination of patent right due to non-payment of annual fee |