CN105776272A - Environmental-friendly clean production device for solid polyaluminium chloride - Google Patents
Environmental-friendly clean production device for solid polyaluminium chloride Download PDFInfo
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- CN105776272A CN105776272A CN201410809921.2A CN201410809921A CN105776272A CN 105776272 A CN105776272 A CN 105776272A CN 201410809921 A CN201410809921 A CN 201410809921A CN 105776272 A CN105776272 A CN 105776272A
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Abstract
The invention discloses an environmental-friendly clean production device for solid polyaluminium chloride. The device comprises an acid tank system, a first-step reaction system, a second-step reaction system, a roller drying system, a crushing and packaging system, a residue treatment system and a tail gas absorption system. The first-step reaction system and the second-step reaction system are provided with flocculating agent preparation tanks, pressure filters, a separation tank, and other apparatuses. Insoluble substances produced in production are separated through coagulating sedimentation, and therefore the yield is increased and quality of a final solid polyaluminium chloride product is improved. The device effectively controls and reduces the insoluble substances in reaction liquid, increases the pressure filtration efficiency, increases the yield of the final solid polyaluminium chloride product, improves the quality of the final solid polyaluminium chloride product, and subjects various filter residues, wastewater, waste gases and the like which are produced in a production process to comprehensive treatment and resource utilization, and therefore production of the solid polyaluminium chloride is energy-saving, consumption-reducing, environmentally friendly and clean.
Description
Technical field
The invention belongs to polyaluminium chloride production technical field, relate to the solid polyaluminium chloride process units of a kind of environment-protecting clean.
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 process units, 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 process units 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；
3) the dry solid polyaluminium chloride obtained can present bulk and hardens, if directly packing sale, can affect product quality image；
4) process of filtering residue and comprehensive utilization, waste water and the process containing acid waste gas and the problem such as comprehensive utilization and energy-saving and cost-reducing, environment-protecting clean production are not had to deal carefully with.
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 the environment-protecting clean process units of a kind of solid polyaluminium chloride, 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 to the various filtering residues produced in production process, waste water, integrated treatment and the recycling such as waste gas, the production making solid polyaluminium chloride is energy-saving and cost-reducing, environment-protecting clean.
For reaching above-mentioned purpose, the present invention provides following technical scheme:
The environment-protecting clean process units of a kind of solid polyaluminium chloride, including acid can system, single step reaction system, two step response systems, roller drying system, crushing packing system, slag treatment system and tail gas absorbing system；
Described acid can system includes sulfuric acid storage tank system and hydrochloric acid tank system, sulfuric acid storage tank system includes sulfuric acid storage tank and sulphuric acid unloading pump, sulphuric acid delivery side of pump of unloading connects with sulfuric acid storage tank, hydrochloric acid tank system includes hydrochloric acid tank, hydrochloric acid unloading pump and hydrochloric acid delivery pump, hydrochloric acid delivery side of pump of unloading connects with hydrochloric acid tank, and the entrance of hydrochloric acid delivery pump connects with hydrochloric acid tank；
Described single step reaction system includes reaction tank, reaction tank transfer pond, flocculating agent formulation tank I, main pressure filter and a step liquid pool, described hydrochloric acid conveying delivery side of pump connects with reaction tank, described sulfuric acid storage tank connects with reaction tank, described reaction tank is provided with bauxite 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 main pressure filter by a step liquid muddy material pump, and the liquid outlet of main pressure filter and a step liquid pool connect；
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；
Described crushing packing system includes feeding hopper, disintegrating machine, bucket elevator, finished product bin and metering packing system, described finished belt conveyer is connected with feeding hopper, feeding hopper is connected with disintegrating machine, disintegrating machine is connected with bucket elevator, bucket elevator is connected with finished product bin, and finished product bin is connected with metering packing system；
Described slag treatment system includes slag kitchen sink, slag pressure filter, slag dehydrator and wastewater disposal basin, the filter-press residues outlet of described main pressure filter connects with slag kitchen sink, described slag kitchen sink is connected with the entrance of slag pressure filter by washed-residue delivery pump, the filter-press residues outlet of slag pressure filter connects with slag dehydrator, the liquid outlet of slag pressure filter connects with wastewater disposal basin, and wastewater disposal basin is connected with reaction tank and modified pond respectively by waste water pump；
Described tail gas absorbing system includes tail gas absorber and is arranged on the gas skirt above main pressure filter, the exhaust gas entrance of described tail gas absorber connects with the exhaust steam passage at reaction tank, reaction tank transfer pond, modified pond and gas skirt top respectively, the absorption liquid entrance of described tail gas absorber connects with tap water pipe network, and the absorption liquid outlet of tail gas absorber connects with wastewater disposal basin；
Described main pressure filter adopts mutually isostructural pressure filter with slag pressure filter, 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.
Further, the quantity of described sulphuric acid unloading pump is two and parallel with one another, and the quantity of described hydrochloric acid tank is ten and parallel with one another, and the quantity of described hydrochloric acid unloading pump is two and parallel with one another, and the quantity of described hydrochloric acid delivery pump is two and parallel with one another.
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 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；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, the filter-press residues outlet of described main pressure filter is connected with slag kitchen sink by belt conveyor, the filter-press residues outlet of described slag pressure filter is connected with slag dehydrator by belt conveyor, described slag kitchen sink is provided with agitator, the quantity of described slag pressure filter is two and parallel with one another, and described wastewater disposal basin connects with tap water pipe network.
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) present invention is also provided with disintegrating machine, first it is crushed before solid polyaluminium chloride enters finished product bin, and being hardened by broken finished product ensure that product quality；
5) arrange slag treatment system and the tail gas absorbing system filtering residue to producing in production process, waste water and waste gas to process and comprehensively utilize, saved the means of production, decreased discharge, reached the purpose that environment-protecting clean produces；
6) 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 acid can system；
Fig. 2 is the structural representation of single step reaction system；
Fig. 3 is the structural representation of two step response systems；
Fig. 4 is the structural representation of roller drying system；
Fig. 5 is the structural representation of crushing packing system；
Fig. 6 is the structural representation of slag treatment system；
Fig. 7 is the structural representation of tail gas absorbing system；
Fig. 8 is the structural representation of pressure filter；
Fig. 9 is the structural representation of filter pressing unit；
Figure 10 is the left view of Fig. 9；
Figure 11 is the A detail drawing of Fig. 9.
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 environment-protecting clean process units of the solid polyaluminium chloride of the present invention, including acid can system, single step reaction system, two step response systems, roller drying system, crushing packing system, slag treatment system and tail gas absorbing system.
Fig. 1 is the structural representation of acid can system, as shown in the figure, acid can system includes sulfuric acid storage tank system and hydrochloric acid tank system, sulfuric acid storage tank system includes sulfuric acid storage tank 11 and sulphuric acid unloading pump 12, the outlet of sulphuric acid unloading pump 12 connects with sulfuric acid storage tank 11, hydrochloric acid tank system includes hydrochloric acid tank 13, hydrochloric acid unloading pump 14 and hydrochloric acid delivery pump 15, and the outlet of hydrochloric acid unloading pump 14 connects with hydrochloric acid tank 13, and the entrance of hydrochloric acid delivery pump 15 connects with hydrochloric acid tank 13；The quantity of described sulphuric acid unloading pump 12 is two and parallel with one another, and the quantity of described hydrochloric acid tank 13 is ten and parallel with one another, and the quantity of described hydrochloric acid unloading pump 14 is two and parallel with one another, and the quantity of described hydrochloric acid delivery pump 15 is two and parallel with one another.Sulphuric acid from tank car for sulphuric acid use pumps into sulfuric acid storage tank 11 by sulphuric acid unloading pump 12, and the hydrochloric acid from hydrochloric acid tank car pumps into hydrochloric acid tank 13 by hydrochloric acid unloading pump 14.
Fig. 2 is the structural representation of single step reaction system, as shown in the figure, single step reaction system includes reaction tank 21, reaction tank transfer pond 22, flocculating agent formulation tank I 23, main pressure filter 24 and a step liquid pool 25, the outlet of described hydrochloric acid delivery pump 15 connects with reaction tank 21, described sulfuric acid storage tank 11 connects with reaction tank 21, described reaction tank 21 is provided with bauxite charge door, reaction tank 21 connects with reaction tank transfer pond 22, flocculating agent formulation tank I 23 connects with reaction tank transfer pond 22, reaction tank transfer pond 22 is connected with the entrance of main pressure filter 24 by a step liquid muddy material pump 26, liquid outlet and a step liquid pool 25 of main pressure filter 24 connect；Described reaction tank 21, reaction tank transfer pond 22 and flocculating agent formulation tank I 23 are equipped with agitator, the quantity of a described step liquid muddy material pump 26 is two and parallel with one another, the quantity of described main pressure filter 24 is three and parallel with one another, and the quantity of a described step liquid pool 25 is four and parallel with one another.Hydrochloric acid and technique waste water is added in reaction tank 21, then the bauxite of formula ratio is put into, reacting by heating, product is taked to put in reaction tank transfer pond 22 from stream mode, add poly-propionic acid amide. flocculant flocculation by flocculating agent formulation tank I 23, then pumped in main pressure filter 24 by a step liquid muddy material pump 26, reaction tank product is carried out slag-liquid separation, an isolated step liquid pump enters in a step liquid pool 25, and the slag kitchen sink that removes slag carries out subsequent treatment.
nullFig. 3 is the structural representation of two step response systems，As shown in the figure，Two step response systems include modified pond 31、Transfer pond, modified pond 32、Cooling tower 33、Separate tank 34、Separate slag saving pond 35、Flocculating agent formulation tank II 36 and semi-finished product pond 37，A described step liquid pool 25 is connected with modified pond 31 by a step liquid delivery pump 38，Described modified pond 31 is provided with calcium aluminate charge door，Modified pond 31 connects with transfer pond, modified pond 32，Transfer pond, modified pond 32 is connected with the entrance of cooling tower 33 by modified liquid delivery pump 39，The outlet of cooling tower 33 connects with separate tank 34，Flocculating agent formulation tank II 36 connects with separate tank 34，The top of separate tank 34 connects with semi-finished product pond 37，The bottom of separate tank 34 connects with separating slag saving pond 35，Separate slag saving pond 35 and connect with reaction tank 21 by separating slag delivery pump 30；Described modified pond 31, separate tank 34, separation slag saving pond 35 and flocculating agent formulation tank II 36 are equipped with agitator, and described cooling tower 33 is the cooling tower being provided with air-introduced machine.By a step liquid delivery pump 38, a step liquid pump is entered in modified pond 31, the reaction of formula ratio calcium aluminate is progressively put under stirring condition, after having reacted, material in cooling tower 33 through air cool down after, entrance separate tank 34 adds flocculant and carries out flocculation separation, is put in semi-finished product pond 37 by supernatant after quiescent settling；Flocculation separation slag pumps into reaction tank 21 from separating slag saving pond 35, when slag in question response pond 21 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 22 by previous process flow process and carries out flocculation separation.
Fig. 4 is the structural representation of roller drying system, as shown in the figure, roller drying system includes dry liquid gravity tank 41, drying drum 42 and finished belt conveyer 43, described semi-finished product pond 37 is connected with dry liquid gravity tank 41 by semi-finished product liquid pump 44, dry liquid gravity tank 41 connects with the dry liquid entrance of drying drum 42, and the solid outlet of drying drum 42 is just to finished belt conveyer 43；The quantity of described drying drum 42 is 20 and parallel with one another, and described drying drum 42 is provided with high-altitude vapor discharge channel 45, and the quantity of described semi-finished product liquid pump 44 is two and parallel with one another.In semi-finished product pond 37, semi-finished product liquid is by the dry liquid gravity tank 41 of semi-finished product liquid pump 44 suction, being distributed feed liquid by dry liquid gravity tank 41 to carry out high temperature dehydration to each drying drum 42 and dry, the solid polyaluminium chloride through cylinder dry is carried by finished belt conveyer 43.
Fig. 5 is the structural representation of crushing packing system, as shown in the figure, crushing packing system includes feeding hopper 51, disintegrating machine 52, bucket elevator 53, finished product bin 54 and metering packing system 55, described finished belt conveyer 43 is connected with feeding hopper 51, feeding hopper 51 is connected with disintegrating machine 52, disintegrating machine 52 is connected with bucket elevator 53, and bucket elevator 53 is connected with finished product bin 54, and finished product bin 54 is connected with metering packing system 55.Solid polyaluminium chloride enters finished product bin 54 after disintegrating machine 52 is broken, then calculates packaging.
Fig. 6 is the structural representation of slag treatment system, as shown in the figure, slag treatment system includes slag kitchen sink 61, slag pressure filter 62, slag dehydrator 63 and wastewater disposal basin 64, the filter-press residues outlet of described main pressure filter 24 connects with slag kitchen sink 61, described slag kitchen sink 61 is connected with the entrance of slag pressure filter 62 by washed-residue delivery pump 65, the filter-press residues outlet of slag pressure filter 62 connects with slag dehydrator 63, the liquid outlet of slag pressure filter 62 connects with wastewater disposal basin 64, and wastewater disposal basin 64 is connected with reaction tank 21 and modified pond 31 respectively by waste water pump 66；The filter-press residues outlet of described main pressure filter 24 is connected with slag kitchen sink 61 by belt conveyor, the filter-press residues outlet of described slag pressure filter 62 is connected with slag dehydrator 63 by belt conveyor, described slag kitchen sink 61 is provided with agitator, the quantity of described slag pressure filter 62 is two and parallel with one another, and described wastewater disposal basin 64 connects with tap water pipe network.After the filter pressing of main pressure filter 24, filter-press residues enters slag kitchen sink 61, adopt fresh water wash filter pressing again to neutrality, finally entering slag dehydrator 63 to be taken out after waste heat boiler steam drying, slag washes and tail gas absorption waste water send into reaction tank 21 after integrating with wastewater disposal basin 64 and modified pond 31 is applied mechanically.
Fig. 7 is the structural representation of tail gas absorbing system, as shown in the figure, tail gas absorbing system includes tail gas absorber 71 and is arranged on the gas skirt above main pressure filter 24, the exhaust gas entrance of described tail gas absorber 71 connects with the exhaust steam passage at reaction tank 21, reaction tank transfer pond 22, modified pond 31 and gas skirt top respectively, the absorption liquid entrance of described tail gas absorber 71 connects with tap water pipe network, and the absorption liquid outlet of tail gas absorber 71 connects with wastewater disposal basin 64.The unified collection of the waste gas containing acid produced in production process absorbs to tail gas absorber 71, and absorption waste water sends into reaction tank 21 after integrating with wastewater disposal basin 64 with slag washes and modified pond 31 is applied mechanically.
The main pressure filter of the present embodiment adopts mutually isostructural pressure filter with slag pressure filter, 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. the environment-protecting clean process units of a solid polyaluminium chloride, it is characterised in that: include acid can system, single step reaction system, two step response systems, roller drying system, crushing packing system, slag treatment system and tail gas absorbing system；
Described acid can system includes sulfuric acid storage tank system and hydrochloric acid tank system, sulfuric acid storage tank system includes sulfuric acid storage tank and sulphuric acid unloading pump, sulphuric acid delivery side of pump of unloading connects with sulfuric acid storage tank, hydrochloric acid tank system includes hydrochloric acid tank, hydrochloric acid unloading pump and hydrochloric acid delivery pump, hydrochloric acid delivery side of pump of unloading connects with hydrochloric acid tank, and the entrance of hydrochloric acid delivery pump connects with hydrochloric acid tank；
Described single step reaction system includes reaction tank, reaction tank transfer pond, flocculating agent formulation tank I, main pressure filter and a step liquid pool, described hydrochloric acid conveying delivery side of pump connects with reaction tank, described sulfuric acid storage tank connects with reaction tank, described reaction tank is provided with bauxite 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 main pressure filter by a step liquid muddy material pump, and the liquid outlet of main pressure filter and a step liquid pool connect；
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；
Described crushing packing system includes feeding hopper, disintegrating machine, bucket elevator, finished product bin and metering packing system, described finished belt conveyer is connected with feeding hopper, feeding hopper is connected with disintegrating machine, disintegrating machine is connected with bucket elevator, bucket elevator is connected with finished product bin, and finished product bin is connected with metering packing system；
Described slag treatment system includes slag kitchen sink, slag pressure filter, slag dehydrator and wastewater disposal basin, the filter-press residues outlet of described main pressure filter connects with slag kitchen sink, described slag kitchen sink is connected with the entrance of slag pressure filter by washed-residue delivery pump, the filter-press residues outlet of slag pressure filter connects with slag dehydrator, the liquid outlet of slag pressure filter connects with wastewater disposal basin, and wastewater disposal basin is connected with reaction tank and modified pond respectively by waste water pump；
Described tail gas absorbing system includes tail gas absorber and is arranged on the gas skirt above main pressure filter, the exhaust gas entrance of described tail gas absorber connects with the exhaust steam passage at reaction tank, reaction tank transfer pond, modified pond and gas skirt top respectively, the absorption liquid entrance of described tail gas absorber connects with tap water pipe network, and the absorption liquid outlet of tail gas absorber connects with wastewater disposal basin；
Described main pressure filter adopts mutually isostructural pressure filter with slag pressure filter, 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.
2. the environment-protecting clean process units of solid polyaluminium chloride according to claim 1, it is characterized in that: the quantity of described sulphuric acid unloading pump is two and parallel with one another, the quantity of described hydrochloric acid tank is ten and parallel with one another, the quantity of described hydrochloric acid unloading pump is two and parallel with one another, and the quantity of described hydrochloric acid delivery pump is two and parallel with one another.
3. the environment-protecting clean process units of solid polyaluminium chloride 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 a described step liquid muddy material pump 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；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. the environment-protecting clean process units of solid polyaluminium chloride 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 semi-finished product liquid pump is two and parallel with one another.
5. the environment-protecting clean process units of solid polyaluminium chloride according to claim 1, it is characterized in that: the filter-press residues outlet of described main pressure filter is connected with slag kitchen sink by belt conveyor, the filter-press residues outlet of described slag pressure filter is connected with slag dehydrator by belt conveyor, described slag kitchen sink is provided with agitator, the quantity of described slag pressure filter is two and parallel with one another, and described wastewater disposal basin connects with tap water pipe network.
6. the environment-protecting clean process units of solid polyaluminium chloride according to any one of claim 1-5, 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. the environment-protecting clean process units of solid polyaluminium chloride according to claim 6, it is characterised in that: the cross section of described voussoir is isosceles triangle.
8. the environment-protecting clean process units of solid polyaluminium chloride according to claim 1, 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. the environment-protecting clean process units of solid polyaluminium chloride according to claim 1, it is characterised in that: described frame is provided with the crossbeam for described filter pressing unit mobile guide.
10. the environment-protecting clean process units of solid polyaluminium chloride according to claim 1, 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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| CN201410809921.2A CN105776272A (en) | 2014-12-24 | 2014-12-24 | Environmental-friendly clean production device for solid polyaluminium chloride |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107082440A (en) * | 2017-05-13 | 2017-08-22 | 江苏蓝遥净水剂有限公司 | A kind of aluminium polychloride produces waste residue recycle device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107082440A (en) * | 2017-05-13 | 2017-08-22 | 江苏蓝遥净水剂有限公司 | A kind of aluminium polychloride produces waste residue recycle device |
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