CN203683126U - Solid polyaluminium chloride (PAC) reaction device - Google Patents
Solid polyaluminium chloride (PAC) reaction device Download PDFInfo
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- CN203683126U CN203683126U CN201320767294.1U CN201320767294U CN203683126U CN 203683126 U CN203683126 U CN 203683126U CN 201320767294 U CN201320767294 U CN 201320767294U CN 203683126 U CN203683126 U CN 203683126U
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Abstract
The utility model discloses a solid polyaluminium chloride (PAC) reaction device. The device comprises a one-step reaction system, a two-step reaction system and a drum drying system, wherein the one-step reaction system comprises a reaction tank, a reaction tank transfer tank, a flocculant preparation tank I, main filter presses and one-step liquid tanks; the two-step reaction system comprises a tempering tank, a tempering tank transfer tank, a cooling tower, a separation tank, a separated slag storage tank, a flocculant preparation tank II and a semi-finished product tank; the drum drying system comprises a drying liquid high level tank, drying drums and a finished product belt conveyor. The device effectively controls and reduces the content of insoluble substances in the reaction liquid, increases the yield and quality of the final solid PAC product, and saves energy and reduces consumption in production of solid PAC.
Description
Technical field
The utility model belongs to poly aluminium chloride production technical field, relates to a kind of solid poly aluminium chloride reaction unit.
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.
At present built solid poly aluminium chloride reaction unit, majority be that bauxitic clay and calcium aluminate two-step approach are produced liquid poly aluminium chloride, then liquid poly aluminium chloride is dried with spraying or roller drying is the device of solid poly aluminium chloride.The following shortcoming of existing solid poly aluminium chloride reaction unit ubiquity:
1) in the acid-soluble reaction of the first step and second step polyreaction, all can produce a large amount of insolubless and be difficult to separate with reaction solution, cause insolubles severe overweight in final solid poly aluminium chloride product;
2) roller drying system using, flow setting is reasonable not, causes energy consumption for drying high cost, and the transportation processing of the solid poly aluminium chloride of process roller drying also relatively wastes time and energy.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of solid poly aluminium chloride reaction unit, effectively control and reduce the insolubles content in reaction solution, improving output and the quality of final solid poly aluminium chloride product, and making the production of solid poly aluminium chloride energy-saving and cost-reducing.
For achieving the above object, the utility model provides following technical scheme:
Solid poly aluminium chloride reaction unit of the present utility model, comprises single step reaction system, two step reactive system and roller drying systems;
Described single step reaction system comprises reaction tank, reaction tank transfer pond, flocculating agent formulation tank I, main pressure filter and a step liquid pool, described reaction tank is provided with bauxitic clay charging opening and acid solution charging opening, reaction tank is communicated with reaction tank transfer pond, flocculating agent formulation tank I is communicated with reaction tank transfer pond, reaction tank transfer pond is communicated with the entrance of main pressure filter by the muddy material pump of a step liquid, and the liquid exit of main pressure filter is communicated with a step liquid pool;
Described two step reactive systems comprise modified pond, modified Chi Zhongzhuanchi, cooling tower, separate tank, separate slag saving pond, flocculating agent formulation tank II and work in-process pond, a described step liquid pool is communicated with modified pond by a step liquid transferpump, described modified pond is provided with calcium aluminate charging opening, 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 II 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, separating slag saving pond is communicated with reaction tank by separating slag transferpump,
Described roller drying system comprises dry liquid high level tank, drying drum and finished belt transfer roller, described work in-process pond is communicated with dry liquid high level tank by work in-process liquid pump, dry liquid high level tank is communicated with the dry liquid entrance of drying drum, and the solid outlet of drying drum is just to finished belt transfer roller.
Further, described reaction tank, reaction tank transfer pond and flocculating agent formulation tank I are equipped with agitator, the quantity of the muddy material pump of a described step liquid is two and parallel with one another, and the quantity of described main pressure filter is three and parallel with one another, and the quantity of a described step liquid pool is four and parallel with one another.
Further, described modified pond, separate tank, separation slag saving pond and flocculating agent formulation tank II are equipped with agitator, and described cooling tower is the cooling tower that is provided with induced draft fan.
Further, the quantity of described drying drum is 20 and parallel with one another, and described drying drum is provided with high-altitude vapor discharge channel, and the quantity of described work in-process liquid pump is two and parallel with one another.
Further, described reaction tank is provided with Waste gas outlet and vapor interface, and described reaction tank transfer pond is provided with Waste gas outlet, and described main pressure filter top is provided with gas skirt, and described modified pond is provided with Waste gas outlet and vapor interface.
The beneficial effects of the utility model are:
1) the utility model arranges the devices such as flocculating agent formulation tank, pressure filter and separate tank in single step reaction system and two step reactive systems, by the insolubles producing in coagulating sedimentation separation of produced, improve output and the quality of final solid poly aluminium chloride product;
2) the utility model is provided with dry liquid high level tank, first by dry the suction of liquid poly aluminium chloride liquid high level tank, carrying out high temperature dehydration by dry liquid high level tank distribution feed liquid to each drying drum is dried, thereby the object that has reached uniform distribution with succinct technical process efficiently, has reduced energy consumption for drying cost;
3) the utility model is also provided with the finished belt transfer roller matching with drying drum, automatically collects conveying solid substance poly aluminium chloride by finished belt transfer roller, has saved the cost that transports of solid poly aluminium chloride.
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 of single step reaction system;
Fig. 2 is the structural representation of two step reactive systems;
Fig. 3 is the structural representation of roller drying system.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
Solid poly aluminium chloride reaction unit of the present utility model, comprises single step reaction system, two step reactive system and roller drying systems.
Fig. 1 is the structural representation of single step reaction system, as shown in the figure, single step reaction system comprises reaction tank 11, reaction tank transfer pond 12, flocculating agent formulation tank I 13, main pressure filter 14 and a step liquid pool 15, described reaction tank 11 is provided with bauxitic clay charging opening and acid solution charging opening, reaction tank 11 is communicated with reaction tank transfer pond 12, flocculating agent formulation tank I 13 is communicated with reaction tank transfer pond 12, reaction tank transfer pond 12 is communicated with the entrance of main pressure filter 14 by the muddy material pump 16 of a step liquid, and the liquid exit of main pressure filter 14 is communicated with a step liquid pool 15; Described reaction tank 11, reaction tank transfer pond 12 and flocculating agent formulation tank I 13 are equipped with agitator, the quantity of the muddy material pump 16 of a described step liquid is two and parallel with one another, the quantity of described main pressure filter 14 is three and parallel with one another, and the quantity of a described step liquid pool 15 is four and parallel with one another.In reaction tank 11, add hydrochloric acid and processing wastewater, then drop into the bauxitic clay of formula ratio, reacting by heating, reaction product is taked to put into reaction tank transfer pond 12 from stream mode, add poly-propionic acid amide flocculation agent flocculation by flocculating agent formulation tank I 13, then pump in main pressure filter 14 by the muddy material pump 16 of a step liquid, reaction tank product is carried out to the separation of slag liquid, an isolated step liquid pump enters in a step liquid pool 15, and the slag wash trough that removes slag carries out subsequent disposal.
Fig. 2 is the structural representation of two step reactive systems, as shown in the figure, two step reactive systems comprise modified pond 21, transfer pond, modified pond 22, cooling tower 23, separate tank 24, separate slag saving pond 25, flocculating agent formulation tank II 26 and work in-process pond 27, a described step liquid pool 15 is communicated with modified pond 21 by a step liquid transferpump 28, described modified pond 21 is provided with calcium aluminate charging opening, modified pond 21 is communicated with transfer pond, modified pond 22, transfer pond, modified pond 22 is communicated with the entrance of cooling tower 23 by modified liquid transferpump 29, the outlet of cooling tower 23 is communicated with separate tank 24, flocculating agent formulation tank II 26 is communicated with separate tank 24, the top of separate tank 24 is communicated with work in-process pond 27, the bottom of separate tank 24 with separate slag saving pond 25 and be communicated with, separating slag saving pond 25 is communicated with reaction tank 11 by separating slag transferpump 20, described modified pond 21, separate tank 24, separation slag saving pond 25 and flocculating agent formulation tank II 26 are equipped with agitator, and described cooling tower 23 is for being provided with the cooling tower of induced draft fan.By a step liquid transferpump 28, a step liquid pump is entered in modified pond 21, 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 23, enter separate tank 24 and add flocculation agent to carry out flocculation separation, after quiescent settling, supernatant liquor is put into work in-process pond 27; Flocculation separation slag pumps into reaction tank 11 from separating slag saving pond 25, when slag in question response pond 11 reaches process stipulation disposal amount, add formula ratio hydrochloric acid, sulfuric acid and water reaction, after slag has reacted, material enters reaction tank transfer pond 12 by aforementioned technical process and carries out flocculation separation.
Fig. 3 is the structural representation of roller drying system, as shown in the figure, roller drying system comprises dry liquid high level tank 31, drying drum 32 and finished belt transfer roller 33, described work in-process pond 27 is communicated with dry liquid high level tank 31 by work in-process liquid pump 34, dry liquid high level tank 31 is communicated with the dry liquid entrance of drying drum 32, and the solid outlet of drying drum 32 is just to finished belt transfer roller 33; The quantity of described drying drum 32 is 20 and parallel with one another, and described drying drum 32 is provided with high-altitude vapor discharge channel 35, and the quantity of described work in-process liquid pump 34 is two and parallel with one another.In work in-process pond 27, work in-process liquid is by the dry liquid high level tank 31 of work in-process liquid pump 34 suction, carry out high temperature dehydration by dry liquid high level tank 31 distribution feed liquids to each drying drum 32 and be dried, carried by finished belt transfer roller 33 through the solid poly aluminium chloride of roller drying.
In the present embodiment, described reaction tank 11 is provided with Waste gas outlet 17 and vapor interface 18, described reaction tank transfer pond 12 is provided with Waste gas outlet 19, and described main pressure filter 14 tops are provided with gas skirt 10, and described modified pond 21 is provided with Waste gas outlet 201 and vapor interface 202; Be collected into tail gas absorber and absorb processing containing sour waste gas unification what produce in reaction process.
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 solid poly aluminium chloride reaction unit, is characterized in that: comprise single step reaction system, two step reactive system and roller drying systems;
Described single step reaction system comprises reaction tank, reaction tank transfer pond, flocculating agent formulation tank I, main pressure filter and a step liquid pool, described reaction tank is provided with bauxitic clay charging opening and acid solution charging opening, reaction tank is communicated with reaction tank transfer pond, flocculating agent formulation tank I is communicated with reaction tank transfer pond, reaction tank transfer pond is communicated with the entrance of main pressure filter by the muddy material pump of a step liquid, and the liquid exit of main pressure filter is communicated with a step liquid pool;
Described two step reactive systems comprise modified pond, modified Chi Zhongzhuanchi, cooling tower, separate tank, separate slag saving pond, flocculating agent formulation tank II and work in-process pond, a described step liquid pool is communicated with modified pond by a step liquid transferpump, described modified pond is provided with calcium aluminate charging opening, 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 II 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, separating slag saving pond is communicated with reaction tank by separating slag transferpump,
Described roller drying system comprises dry liquid high level tank, drying drum and finished belt transfer roller, described work in-process pond is communicated with dry liquid high level tank by work in-process liquid pump, dry liquid high level tank is communicated with the dry liquid entrance of drying drum, and the solid outlet of drying drum is just to finished belt transfer roller.
2. solid poly aluminium chloride reaction unit according to claim 1, it is characterized in that: described reaction tank, reaction tank transfer pond and flocculating agent formulation tank I are equipped with agitator, the quantity of the muddy material pump of a described step liquid is two and parallel with one another, the quantity of described main pressure filter is three and parallel with one another, and the quantity of a described step liquid pool is four and parallel with one another.
3. solid poly aluminium chloride reaction unit according to claim 1, is characterized in that: described modified pond, separate tank, separation slag saving pond and flocculating agent formulation tank II are equipped with agitator, and described cooling tower is the cooling tower that is provided with induced draft fan.
4. solid poly aluminium chloride reaction unit according to claim 1, it is characterized in that: the quantity of described drying drum is 20 and parallel with one another, described drying drum is provided with high-altitude vapor discharge channel, and the quantity of described work in-process liquid pump is two and parallel with one another.
5. solid poly aluminium chloride reaction unit according to claim 1, it is characterized in that: described reaction tank is provided with Waste gas outlet and vapor interface, described reaction tank transfer pond is provided with Waste gas outlet, described main pressure filter top is provided with gas skirt, and described modified pond is provided with Waste gas outlet and vapor interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320767294.1U CN203683126U (en) | 2013-11-29 | 2013-11-29 | Solid polyaluminium chloride (PAC) reaction device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320767294.1U CN203683126U (en) | 2013-11-29 | 2013-11-29 | Solid polyaluminium chloride (PAC) reaction device |
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| CN203683126U true CN203683126U (en) | 2014-07-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104743591A (en) * | 2013-12-31 | 2015-07-01 | 重庆蓝洁广顺净水材料有限公司 | Energy-saving and environment-friendly production system of solid polyaluminium chloride by drying with conduction oil type drum |
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2013
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104743591A (en) * | 2013-12-31 | 2015-07-01 | 重庆蓝洁广顺净水材料有限公司 | Energy-saving and environment-friendly production system of solid polyaluminium chloride by drying with conduction oil type drum |
| CN104743591B (en) * | 2013-12-31 | 2017-10-31 | 重庆蓝洁广顺净水材料有限公司 | A kind of solid polyaluminium chloride energy-conserving and environment-protective production system of use heat conducting oil type roller drying |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20171129 |