CN105776274A - A reaction device for producing solid polyaluminium chloride - Google Patents
A reaction device for producing solid polyaluminium chloride Download PDFInfo
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- CN105776274A CN105776274A CN201410809923.1A CN201410809923A CN105776274A CN 105776274 A CN105776274 A CN 105776274A CN 201410809923 A CN201410809923 A CN 201410809923A CN 105776274 A CN105776274 A CN 105776274A
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Abstract
The invention discloses a reaction device for producing solid polyaluminium chloride. The device comprises a first-step reaction system, a second-step reaction system and a roller drying system. The first-step reaction system comprises a reaction tank, a reaction tank transit tank, a flocculant preparation tank I, pressure filters and first-step liquid tanks. The second-step reaction system comprises a regulating tank, a regulating tank transit tank, a cooling tower, a separation tank, a separation residue storage tank, a flocculant preparation tank II and a semi-finished product tank. The roller drying system comprises a drying liquid high-level tank, drying rollers and finished-product conveyer belts. The device effectively controls and reduces the content of insoluble substances in the reaction liquid, increases the pressure filtration efficiency, increases the yield of a final solid polyaluminium chloride product, improves the quality of the final solid polyaluminium chloride product, and allows production of the solid polyaluminium chloride to be energy-saving and consumption-reducing.
Description
Technical field
The invention belongs to polyaluminium chloride production technical field, relate to a kind of solid polyaluminium chloride and produce reaction unit.
Background technology
Polyaluminium chloride, is commonly called as water purification agent, has another name called aluminium polychlorid, is called for short poly-aluminum, english name PAC；It is the cationic inorganic polymer flocculant of a kind of polyhydroxy, multinuclear complexation body, and solid product outward appearance is bronzing, yellow or white solid powder, and its chemical molecular formula is [AL2(OH)nCL6-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, with physico changes such as electrochemistry, cohesion, absorption and precipitations in hydrolytic process, ultimately generate [AL2(OH)3(OH)3], thus reaching to purify purpose.
The fundamental difference of polyaluminium chloride and conventional inorganic coagulant is in that conventional inorganic coagulant is low molecule crystal salt, and the structure of polyaluminium chloride is made up of the polycarboxy complex that form is changeable, flocculation sediment speed is fast, it is suitable for pH range width, to pipe-line equipment non-corrosiveness, purifying water effect is obvious, can effectively prop up dewater middle chromaticness SS, COD, BOD and the heavy metal ion such as arsenic, hydrargyrum, and this product is widely used in drinking water, water for industrial use and sewage treatment area.
Polyaluminium chloride is divided into form to be divided into two kinds: a. liquid polyaluminium chloride to be undried form, have and need not dilute, load and unload advantage easy to use, that 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 polyaluminium chloride is dried form, the advantage having convenient transportation, it is not necessary to tank car, and shortcoming also needs to dilution when being and use, increase working strength.
The raw material producing polyaluminium chloride mainly has two big classes: a class is aluminum-containing mineral, including bauxite (gibbsite, boehmite, diaspore), clay, Kaolin, alunite etc.；Another kind of is other aluminum-containing raw material, including metallic aluminium, aluminium scrap bits, ash aluminum, aluminium hydroxide, aluminum chloride, gangue, flyash etc..The method producing polyaluminium chloride at present mainly has metallic aluminium (including aluminum ash, lead skim) method, active aluminium hydroxide method, aluminium sesquioxide (including bauxite, gangue etc.) method, crystal aluminum chloride method etc..
1. metallic aluminium method: adopt the raw material of metallic aluminium method synthesis polyaluminium chloride to be mainly the leftover bits and pieces of aluminum processing, such as aluminum bits, aluminum ash and aluminum slag etc..It is added slowly with stirring hydrochloric acid according to a certain ratio by aluminum ash to react, is polymerized through ripening, settles prepared liquid aluminium polychloride, then through dilute filtration, concentration, dry and prepare.Technique can be divided into acid system, alkaline process, neutralisation 3 kinds.Acid system mainly uses HCl, and product quality is wayward；Alkaline process producting process difficulty is higher, and equipment investment is relatively big and alkali charge is big, and pH controls to take raw material, relatively costly；Maximum be neutralisation, as long as controlling proportioning well, be generally attained by national standard.
2. aluminium hydroxide method
The levels of toxic substances such as aluminium hydrate powder purity is higher, the polyaluminium chloride heavy metal of synthesis are low, are generally adopted the production technology that heating pressurization is acid-soluble.This technics comparing is simple, but the basicity of the aluminium polychlorid produced is relatively low, is therefore generally adopted that aluminium hydroxide temperature-pressure is acid-soluble adds in calcium aluminate breeze and two procedures.
3. aluminium sesquioxide method
Raw material containing aluminium sesquioxide mainly has gibbsite, aluminum vanadine, Kaolin, gangue etc..This production technology can be divided into two steps: the first step is to obtain crystal aluminum chloride, and second step is to obtain polyaluminium chloride by pyrolysismethod or neutralisation.
4. Alchlor process
Adopting chlorination aluminium powder is Raw material processing polyaluminium chloride, and the application of this method is the most general.Available crystal aluminum chloride carries out boiling pyrolysis in 170 DEG C, adds water cure polymerization, then through solidification, dry prepared.
At present built solid polyaluminium chloride reaction unit, majority is bauxite and calcium aluminate two-step method production liquid polyaluminium chloride, then by liquid polyaluminium chloride spray drying or device that cylinder dry is solid polyaluminium chloride.The existing solid polyaluminium chloride following shortcoming of reaction unit ubiquity:
1) in the acid-soluble reaction of the first step and second step polyreaction, all can produce a large amount of insoluble matter and be difficult to separate with reactant liquor, cause insoluble matter severe overweight in final solid polyaluminium chloride product；
2) roller drying system used, flow setting is not reasonable, causes energy consumption for drying high cost and the transportation processing also relatively time-consuming effort of the solid polyaluminium chloride through cylinder dry.
Pressure filter is a kind of utilize filter medium that object is applied certain pressure make liquid dialysis a kind of plant equipment out.Filter material is injected filter chamber by the pressure of feed pump by pressure filter, filter material is entered filter plate by the charging hole of thrust plate end face, made filter material be distributed to all of filter chamber by filter plate centre bore again, after the filter medium of filter chamber makes solid-liquid separation, reach the purpose filtered.Existing pressure filter normally only adopts adjustment feed pressure to be used as the pressure source of filter pressing, although disclosure satisfy that instructions for use, but, along with the development of filtering equipment, the filter area of pressure filter continues to increase, and the quantity of filter plate is also on the increase, the length making pressure filter constantly lengthens, if providing filter pressing pressure only with the feed pressure strengthening feed pump, then can cause that filter cake can not complete for a long time in filter pressing, reduce production efficiency.
Further, since the length of pressure filter constantly lengthens, after filter pressing completes, cannot guarantee that all of filter chamber all can be opened, cause that filtering residue can not be got rid of smoothly, it is necessary to adopt manual operation to remove filtering residue again after being opened by the filter chamber being not switched on one by one, not only waste of manpower, and reduce production efficiency.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of solid polyaluminium chloride and produce reaction unit, the insolubles content that can effectively control and reduce in reactant liquor, improve efficiency of press filtering and improve yield and the quality of final solid polyaluminium chloride product, and making the production of solid polyaluminium chloride save energy and reduce the cost.
For reaching above-mentioned purpose, the present invention provides following technical scheme:
A kind of solid polyaluminium chloride produces reaction unit, including single step reaction system, two step response system and roller drying systems；
Described single step reaction system includes reaction tank, reaction tank transfer pond, flocculating agent formulation tank I, pressure filter and a step liquid pool, described reaction tank is provided with bauxite charge door and acid solution charge door, reaction tank connects with reaction tank transfer pond, flocculating agent formulation tank I connects with reaction tank transfer pond, reaction tank transfer pond is connected with the entrance of pressure filter by a muddy material pump of step liquid, and the liquid outlet of pressure filter and a step liquid pool connect；
Described pressure filter includes frame, pressure strip and thrust plate, filter pressing unit it is provided with between described pressure strip and thrust plate, described frame is provided with the hydraulic cylinder for promoting described pressure strip to move, and described thrust plate is provided with material access aperture, described filter pressing unit includes filter pressing frame, two pieces of filter press plates being all slidably matched it are provided with it in described filter pressing frame, the center of two pieces of described filter press plates is correspondingly provided with charging hole, and the charging hole inner sleeve of two pieces of described filter press plates is equiped with the feed pipe being slidably matched with it, the two ends end face of described filter pressing frame is equipped with filter cloth, the two ends mouth of pipe of described feed pipe each extends over and stretches out outside described filter cloth, described filter pressing frame is additionally provided with the driving mechanism for driving two pieces of opposing motions of described filter press plate；
Described two step response systems include modified pond, modified Chi Zhongzhuanchi, cooling tower, separate tank, separate slag saving pond, flocculating agent formulation tank II and semi-finished product pond, a described step liquid pool is connected with modified pond by a step liquid delivery pump, described modified pond is provided with calcium aluminate charge door, modified pond connects with modified Chi Zhongzhuanchi, modified Chi Zhongzhuanchi is connected with the entrance of cooling tower by modified liquid delivery pump, the outlet of cooling tower connects with separate tank, flocculating agent formulation tank II connects with separate tank, the top of separate tank connects with semi-finished product pond, the bottom of separate tank connects with separating slag saving pond, separate slag saving pond and connect with reaction tank by separating slag delivery pump；
Described roller drying system includes dry liquid gravity tank, drying drum and finished belt conveyer, described semi-finished product pond is connected with dry liquid gravity tank by semi-finished product liquid pump, dry liquid gravity tank connects with the dry liquid entrance of drying drum, and the solid outlet of drying drum is just to finished belt conveyer.
Further, described reaction tank, reaction tank transfer pond and flocculating agent formulation tank I are equipped with agitator, the quantity of a described step liquid muddy material pump is two and parallel with one another, and the quantity of described 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 being provided with air-introduced machine.
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 semi-finished product 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 pressure filter is arranged over gas skirt, and described modified pond is provided with Waste gas outlet and vapor interface.
Further, described driving mechanism includes the driver element being separately positioned on the described upper and lower both sides of filter pressing frame or the left and right sides, described driver element includes the installing rack being arranged on described filter pressing frame, described installing rack is provided with driving hydraulic cylinder, the piston rod of described driving hydraulic cylinder is provided with the voussoir for driving two pieces of described filter press plates to be moved away from, being provided with the gap coordinated with described voussoir between two pieces of described filter press plates, described filter pressing frame is provided with the through hole passed through for described voussoir.
Further, the cross section of described voussoir is isosceles triangle.
Further, on the inwall of described filter pressing frame, compartment of terrain is provided with chute, and the outer wall of described filter press plate is provided with the slide block coordinated with described chute, being respectively arranged at two ends with for the position limiting structure outside preventing two pieces of described filter press plates from skidding off described filter pressing frame of described chute.
Further, described frame is provided with the crossbeam for described filter pressing unit mobile guide.
Further, it is equipped with linkage between the outer wall of adjacent two described filter pressing frames and near between described filter pressing frame and the outer wall of described pressure strip of described pressure strip, described linkage includes four double; two hinge bars, four described pair of hinge bars are hingedly connected together and form diamond structure between two, and the summit that the two of which of described diamond structure is relative is hingedly connected on two adjacent described filter pressing frames or on the described filter pressing frame and described pressure strip of described pressure strip.
The beneficial effects of the present invention is:
1) present invention arranges the devices such as flocculating agent formulation tank, pressure filter and separate tank in single step reaction system and two step response systems, by the insoluble matter produced in coagulating sedimentation separation of produced, improves yield and the quality of final solid polyaluminium chloride product；
2) present invention is provided with dry liquid gravity tank, first by dry for liquid polyaluminium chloride suction liquid gravity tank, being carried out high temperature dehydration by dry liquid gravity tank distribution feed liquid to each drying drum to dry, thus having reached the purpose of uniform distribution to be concisely and efficiently technological process, reducing energy consumption for drying cost；
3) present invention is also provided with the finished belt conveyer that matches with drying drum, automatically collects conveying solid substance polyaluminium chloride by finished belt conveyer, and that has saved solid polyaluminium chloride transports cost；
4) by the filter pressing unit split of pressure filter being set to filter pressing frame and two filter press plates being slidably installed in filter pressing frame, during use, move first with Driven by Hydraulic Cylinder pressure strip and all filter pressing unit are fixed, filter chamber is constituted between adjacent two filter pressing frames, then feed pump is utilized to be injected in filter chamber by filter pressing material, two pieces of filter press plates of filter pressing material meeting driving pressure filter frame move towards and are adjacent to together, pressurize after filter cake fills filter chamber, the two pieces of filter press plates started in driving mechanism driving pressure filter frame are moved away from extruding filter chamber simultaneously, namely filter cake is subject to the pressure effect of feed pump and the squeezing action of filter press plate simultaneously, can be quickly, the liquid contained more up hill and dale filters out, and pressure efficiency can be improved.
Accompanying drawing explanation
In order to make the purpose of the present invention, technical scheme and beneficial effect clearly, the present invention provides drawings described below to illustrate:
Fig. 1 is the structural representation of single step reaction system；
Fig. 2 is the structural representation of two step response systems；
Fig. 3 is the structural representation of roller drying system；
Fig. 4 is the structural representation of pressure filter；
Fig. 5 is the structural representation of filter pressing unit；
Fig. 6 is the left view of Fig. 5；
Fig. 7 is the A detail drawing of Fig. 5.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described, so that those skilled in the art can be better understood from the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
The solid polyaluminium chloride of the present invention produces reaction unit, including single step reaction system, two step response 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 includes reaction tank 11, reaction tank transfer pond 12, flocculating agent formulation tank I 13, pressure filter 14 and a step liquid pool 15, described reaction tank 11 is provided with bauxite charge door and acid solution charge door, reaction tank 11 connects with reaction tank transfer pond 12, flocculating agent formulation tank I 13 connects with reaction tank transfer pond 12, reaction tank transfer pond 12 is connected with the entrance of pressure filter 14 by a muddy material pump 16 of step liquid, and liquid outlet and a step liquid pool 15 of pressure filter 14 connect；Described reaction tank 11, reaction tank transfer pond 12 and flocculating agent formulation tank I 13 are equipped with agitator, the quantity of a described step liquid muddy material pump 16 is two and parallel with one another, the quantity of described 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.Hydrochloric acid and technique waste water is added in reaction tank 11, then the bauxite of formula ratio is put into, reacting by heating, product is taked to put in reaction tank transfer pond 12 from stream mode, add poly-propionic acid amide. flocculant flocculation by flocculating agent formulation tank I 13, then pump in pressure filter 14 by a muddy material pump 16 of step liquid, reaction tank product is carried out slag-liquid separation, an isolated step liquid pump enters in a step liquid pool 15, and the slag kitchen sink that removes slag carries out subsequent treatment.
nullFig. 2 is the structural representation of two step response systems，As shown in the figure，Two step response systems include 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 semi-finished product pond 27，A described step liquid pool 15 is connected with modified pond 21 by a step liquid delivery pump 28，Described modified pond 21 is provided with calcium aluminate charge door，Modified pond 21 connects with transfer pond, modified pond 22，Transfer pond, modified pond 22 is connected with the entrance of cooling tower 23 by modified liquid delivery pump 29，The outlet of cooling tower 23 connects with separate tank 24，Flocculating agent formulation tank II 26 connects with separate tank 24，The top of separate tank 24 connects with semi-finished product pond 27，The bottom of separate tank 24 connects with separating slag saving pond 25，Separate slag saving pond 25 and connect with reaction tank 11 by separating slag delivery pump 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 the cooling tower being provided with air-introduced machine.By a step liquid delivery pump 28, a step liquid pump is entered in modified pond 21, the reaction of formula ratio calcium aluminate is progressively put under stirring condition, after having reacted, material in cooling tower 23 through air cool down after, entrance separate tank 24 adds flocculant and carries out flocculation separation, is put in semi-finished product pond 27 by supernatant after quiescent settling；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, adding formula ratio hydrochloric acid, sulphuric acid and water reaction, after slag has reacted, material enters reaction tank transfer pond 12 by previous process flow process and carries out flocculation separation.
Fig. 3 is the structural representation of roller drying system, as shown in the figure, roller drying system includes dry liquid gravity tank 31, drying drum 32 and finished belt conveyer 33, described semi-finished product pond 27 is connected with dry liquid gravity tank 31 by semi-finished product liquid pump 34, dry liquid gravity tank 31 connects with the dry liquid entrance of drying drum 32, and the solid outlet of drying drum 32 is just to finished belt conveyer 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 semi-finished product liquid pump 34 is two and parallel with one another.In semi-finished product pond 27, semi-finished product liquid is by the dry liquid gravity tank 31 of semi-finished product liquid pump 34 suction, being distributed feed liquid by dry liquid gravity tank 31 to carry out high temperature dehydration to each drying drum 32 and dry, the solid polyaluminium chloride through cylinder dry is carried by finished belt conveyer 33.
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 pressure filter 14 is arranged over gas skirt 10, and described modified pond 21 is provided with Waste gas outlet 21a and vapor interface 21b；Unified for the waste gas containing acid produced in course of reaction collection is carried out absorption process to tail gas absorber.
The pressure filter of the present embodiment includes frame 101, pressure strip 102 and thrust plate 103, filter pressing unit it is provided with between pressure strip 102 and thrust plate 103, frame 101 is provided with the hydraulic cylinder 104 for promoting pressure strip 102 to move, and thrust plate 103 is provided with material access aperture 105.Preferably, frame 101 is provided with the crossbeam 106 for filter pressing unit mobile guide so that filter pressing unit can move smoothly, and all filter pressing unit can align.Filter pressing unit includes filter pressing frame 107, two pieces of filter press plates being all slidably matched 108 it are provided with it in filter pressing frame 107, the center of two pieces of filter press plates 108 is correspondingly provided with charging hole 109, charging hole 109 be formed around liquid outlet 110, and charging hole 109 inner sleeve of two pieces of filter press plates 108 is equiped with the feed pipe 111 being slidably matched with it, the two ends end face of filter pressing frame 107 is equipped with filter cloth 112, the two ends mouth of pipe of feed pipe 111 each extends over and stretches out outside filter cloth 112, and filter pressing frame 107 is additionally provided with the driving mechanism for driving two pieces of opposing motions of filter press plate 108.The opposing end face of two pieces of filter press plates 108 of the present embodiment is provided with the groove of indent, and the width of filter press plate 108 is less than the half of filter pressing frame 107 width, it is possible to form filter chamber easily between two filter pressing unit.
Further, driving mechanism includes the driver element being separately positioned on filter pressing frame about 107 both sides or the left and right sides, and the driver element of the present embodiment is separately positioned on filter pressing frame about 107 both sides, it is possible to driving pressure filter plate 108 steadily moves.Driver element includes the installing rack 113 being arranged on filter pressing frame 107, installing rack 113 is provided with driving hydraulic cylinder 114, the piston rod driving hydraulic cylinder 114 is provided with the voussoir 115 for driving two pieces of filter press plates 108 to be moved away from, being provided with the gap 116 coordinated with voussoir 115 between two pieces of filter press plates 108, filter pressing frame 107 is provided with the through hole 117 passed through for voussoir 115.The voussoir 115 of the present embodiment, in isosceles triangle, utilizes and drives hydraulic cylinder 114 to drive voussoir 115 to move, it is possible to utilize voussoir 115 to drive two pieces of filter press plates 108 to be moved away from.
On the inwall of the filter pressing frame 107 of the present embodiment, compartment of terrain is provided with chute 118, the outer wall of filter press plate 108 is provided with the slide block 119 coordinated with chute 118, chute 118 be respectively arranged at two ends with for the position limiting structure outside preventing two pieces of filter press plates 108 from skidding off filter pressing frame 107, the position limiting structure of the present embodiment is the limited block 120 being arranged on filter pressing frame 107 two ends.Adopt the filter pressing unit of this structure, the filter press plate 108 movement in filter pressing frame 107 can be made more steady.
Further, it is equipped with linkage between the outer wall of adjacent two filter pressing frames 107 and between the filter pressing frame 107 and the outer wall of pressure strip 102 of pressure strip 108, linkage includes four double; two hinge bars 121, four double; two hinge bars 121 are hingedly connected together and form diamond structure between two, and the summit that the two of which of diamond structure is relative is hingedly connected on two adjacent filter pressing frames 107 or on the filter pressing frame 107 and pressure strip 102 of pressure strip 108.By arranging linkage, when hydraulic cylinder 104 drives pressure strip 102 to move, under the effect of linkage, all filter pressing frames 107 all can be driven and be slided along crossbeam 106, namely can conveniently realize unlatching and the Guan Bi of filter chamber.
Embodiment described above is only the preferred embodiment lifted for absolutely proving the present invention, and protection scope of the present invention is not limited to this.Equivalent replacement that those skilled in the art make on basis of the present invention or conversion, all within protection scope of the present invention.Protection scope of the present invention is as the criterion with claims.
Claims (10)
1. a solid polyaluminium chloride produces reaction unit, it is characterised in that: include single step reaction system, two step response system and roller drying systems；
Described single step reaction system includes reaction tank, reaction tank transfer pond, flocculating agent formulation tank I, pressure filter and a step liquid pool, described reaction tank is provided with bauxite charge door and acid solution charge door, reaction tank connects with reaction tank transfer pond, flocculating agent formulation tank I connects with reaction tank transfer pond, reaction tank transfer pond is connected with the entrance of pressure filter by a muddy material pump of step liquid, and the liquid outlet of pressure filter and a step liquid pool connect；
Described pressure filter includes frame, pressure strip and thrust plate, filter pressing unit it is provided with between described pressure strip and thrust plate, described frame is provided with the hydraulic cylinder for promoting described pressure strip to move, and described thrust plate is provided with material access aperture, described filter pressing unit includes filter pressing frame, two pieces of filter press plates being all slidably matched it are provided with it in described filter pressing frame, the center of two pieces of described filter press plates is correspondingly provided with charging hole, and the charging hole inner sleeve of two pieces of described filter press plates is equiped with the feed pipe being slidably matched with it, the two ends end face of described filter pressing frame is equipped with filter cloth, the two ends mouth of pipe of described feed pipe each extends over and stretches out outside described filter cloth, described filter pressing frame is additionally provided with the driving mechanism for driving two pieces of opposing motions of described filter press plate；
Described two step response systems include modified pond, modified Chi Zhongzhuanchi, cooling tower, separate tank, separate slag saving pond, flocculating agent formulation tank II and semi-finished product pond, a described step liquid pool is connected with modified pond by a step liquid delivery pump, described modified pond is provided with calcium aluminate charge door, modified pond connects with modified Chi Zhongzhuanchi, modified Chi Zhongzhuanchi is connected with the entrance of cooling tower by modified liquid delivery pump, the outlet of cooling tower connects with separate tank, flocculating agent formulation tank II connects with separate tank, the top of separate tank connects with semi-finished product pond, the bottom of separate tank connects with separating slag saving pond, separate slag saving pond and connect with reaction tank by separating slag delivery pump；
Described roller drying system includes dry liquid gravity tank, drying drum and finished belt conveyer, described semi-finished product pond is connected with dry liquid gravity tank by semi-finished product liquid pump, dry liquid gravity tank connects with the dry liquid entrance of drying drum, and the solid outlet of drying drum is just to finished belt conveyer.
2. solid polyaluminium chloride according to claim 1 produces reaction unit, 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 a described step liquid muddy material pump is two and parallel with one another, the quantity of described 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 polyaluminium chloride according to claim 1 produces reaction unit, it is characterised 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 being provided with air-introduced machine.
4. solid polyaluminium chloride according to claim 1 produces reaction unit, 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 semi-finished product liquid pump is two and parallel with one another.
5. solid polyaluminium chloride according to claim 1 produces reaction unit, 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 pressure filter is arranged over gas skirt, and described modified pond is provided with Waste gas outlet and vapor interface.
6. the solid polyaluminium chloride according to any one of claim 1-5 produces reaction unit, it is characterized in that: described driving mechanism includes being separately positioned on the driver element of the described upper and lower both sides of filter pressing frame or the left and right sides, described driver element includes the installing rack being arranged on described filter pressing frame, described installing rack is provided with driving hydraulic cylinder, the piston rod of described driving hydraulic cylinder is provided with the voussoir for driving two pieces of described filter press plates to be moved away from, the gap coordinated with described voussoir it is provided with between two pieces of described filter press plates, described filter pressing frame is provided with the through hole passed through for described voussoir.
7. solid polyaluminium chloride according to claim 6 produces reaction unit, it is characterised in that: the cross section of described voussoir is isosceles triangle.
8. solid polyaluminium chloride according to claim 1 produces reaction unit, it is characterized in that: on the inwall of described filter pressing frame, compartment of terrain is provided with chute, the outer wall of described filter press plate is provided with the slide block coordinated with described chute, being respectively arranged at two ends with for the position limiting structure outside preventing two pieces of described filter press plates from skidding off described filter pressing frame of described chute.
9. solid polyaluminium chloride according to claim 1 produces reaction unit, it is characterised in that: described frame is provided with the crossbeam for described filter pressing unit mobile guide.
10. solid polyaluminium chloride according to claim 1 produces reaction unit, it is characterized in that: between the outer wall of adjacent two described filter pressing frames, and it is equipped with linkage near between described filter pressing frame and the outer wall of described pressure strip of described pressure strip, described linkage includes four double, two hinge bars, four described pair of hinge bars are hingedly connected together between two and form diamond structure, the summit that the two of which of described diamond structure is relative is hingedly connected on two adjacent described filter pressing frames or on the described filter pressing frame and described pressure strip of described pressure strip.
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| CN201410809923.1A CN105776274A (en) | 2014-12-24 | 2014-12-24 | A reaction device for producing solid polyaluminium chloride |
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| CN201410809923.1A CN105776274A (en) | 2014-12-24 | 2014-12-24 | A reaction device for producing solid polyaluminium chloride |
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