CN204454628U - The environment-protecting clean reaction unit of liquid poly aluminium chloride - Google Patents
The environment-protecting clean reaction unit of liquid poly aluminium chloride Download PDFInfo
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- CN204454628U CN204454628U CN201420825138.0U CN201420825138U CN204454628U CN 204454628 U CN204454628 U CN 204454628U CN 201420825138 U CN201420825138 U CN 201420825138U CN 204454628 U CN204454628 U CN 204454628U
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Abstract
The utility model discloses a kind of environment-protecting clean reaction unit of liquid poly aluminium chloride, comprise single step reaction system, two step reactive systems, slag treatment system and tail gas absorbing system; 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 two step reactive systems comprise modified pond, modified Chi Zhongzhuanchi, cooling tower, separate tank, separation slag saving pond, flocculating agent formulation tank II and work in-process pond, described slag treatment system comprises slag wash trough, slag pressure filter, slag dryer and wastewater disposal basin, and described tail gas absorbing system comprises tail gas absorber and is arranged on the gas skirt above main pressure filter.The utility model effectively controls and reduces the insolubles content in reaction solution, improve efficiency of press filtering and press filtration effect, improve the seed output and quality of liquid poly aluminium chloride, and the filter residue produced in production process, waste water and waste gas are processed and fully utilized, save the production means, decrease discharge.
Description
Technical field
The utility model belongs to poly aluminium chloride production technical field, relates to a kind of environment-protecting clean reaction unit of liquid poly aluminium chloride.
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, with physico changes such as electrochemistry, cohesion, absorption and precipitations in hydrolytic process, final generation [AL
2(OH)
3(OH)
3], thus reach purification object.
The fundamental difference of poly aluminium chloride and conventional inorganic coagulating agent is that conventional inorganic coagulating agent is low molecule crystal salt, and the structure of poly aluminium chloride is made up of the polycarboxy complex compound that form is changeable, flocculation sediment speed is fast, be suitable for pH value wide ranges, to pipe-line equipment non-corrosiveness, purifying water effect is obvious, and effectively can prop up dewater middle chromaticness SS, COD, BOD and the heavy metal ion such as arsenic, mercury, this product is widely used in tap water, process water and sewage treatment area.
Poly aluminium chloride is divided into form to be divided into two kinds: a. liquid poly aluminium chloride to be undried form, have and need not dilute, load and unload easy to use, that price is relatively cheap advantage, 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, does not need tank car, also needs dilution when shortcoming is and uses, and increases working strength.
The raw material 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 current production 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 metallic aluminium method synthesis poly aluminium chloride to be mainly the tankage of aluminium processing, as aluminium bits, aluminium ash and aluminium slag etc.Under agitation slowly add hydrochloric acid according to a certain ratio by aluminium ash to react, obtain liquid aluminium polychloride through slaking polymerization, sedimentation, then through dilute filtration, concentrated, dry obtained.Technique can be divided into acid system, alkaline process, neutralisation 3 kinds.Acid system mainly uses HCl, and quality product is wayward; Alkaline process producting process difficulty is higher, and facility investment is comparatively large and alkali charge is large, and pH controls to take raw material, and cost is higher; Maximum be neutralisation, as long as control proportioning well, generally can be up to state standards.
2. aluminium hydroxide method
The levels of toxic substances such as aluminium hydrate powder purity is higher, the poly aluminium chloride heavy metal of synthesis are low, the general production technique adopting heating and pressurizing acid-soluble.This technics comparing is simple, but the basicity of the polymerize aluminum chloride produced is lower, and therefore generally employing 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 contains gibbsite, aluminium vanadine, kaolin, coal gangue etc.This production technique can be divided into two steps: the first step obtains crystal aluminum chloride, and second step obtains poly aluminium chloride by pyrolysis method or neutralisation.
4. aluminium chloride process
Adopt chlorination aluminium powder to be Raw material processing poly aluminium chloride, this method application is the most general.Available crystal aluminum chloride carries out boiling pyrolysis in 170 DEG C, adds water cure polymerization, then through solidification, dry obtained.
Liquid poly aluminium chloride reaction unit built at present, majority is the device of bauxitic clay and calcium aluminate two-step approach reaction solution body poly aluminium chloride, it is in the acid-soluble reaction of the first step and second step polyreaction, capital produces a large amount of insolubles and is difficult to be separated with reaction solution, causes insolubles severe overweight in final poly aluminium chloride product.In addition, existing liquid poly aluminium chloride reaction unit is for the process of filter residue and comprehensive utilization, waste water with do not have to deal carefully with containing problems such as the process of sour waste gas and comprehensive utilization and energy-saving and cost-reducing, environment-protecting clean productions.
Pressure filter is a kind ofly utilize filtration medium to apply certain pressure to object and make liquid dialysis a kind of mechanical means out.Filter material is injected filter chamber by the pressure of fresh feed pump by pressure filter, filter material enters filter plate by the feed port of thrust plate end face, make filter material be distributed to all filter chambers by filter plate centre hole again, after the filtration medium of filter chamber makes solid-liquid separation, reach the object of filtration.Existing pressure filter generally only adopts adjustment feed pressure to be used as the pressure source of press filtration, although can service requirements be met, but, along with the development of filtering equipment, the filtration area of pressure filter continues to increase, and the quantity of filter plate is also on the increase, the length of pressure filter is constantly lengthened, if only adopt the feed pressure strengthening fresh feed pump to provide press filtration pressure, then filter cake can be caused can not press filtration to complete for a long time, reduce production efficiency.
In addition, because the length of pressure filter constantly lengthens, after press filtration completes, cannot guarantee that all filter chambers all can be opened, cause filter residue not get rid of smoothly, after needing to adopt manual operation to be opened by the filter chamber do not opened one by one, remove filter residue again, not only waste of manpower, and reduce production efficiency.
Summary of the invention
In view of this, the purpose of this utility model is the environment-protecting clean reaction unit providing a kind of liquid poly aluminium chloride, effectively can control and reduce the insolubles content in reaction solution, improve efficiency of press filtering and press filtration effect, improve the seed output and quality of liquid poly aluminium chloride, and to comprehensive treating process and the recycling such as various filter residues, waste water, waste gas that produce in production process, make that the production of poly aluminium chloride is energy-saving and cost-reducing, environment-protecting clean.
For achieving the above object, the utility model provides following technical scheme:
An environment-protecting clean reaction unit for liquid poly aluminium chloride, comprises single step reaction system, two step reactive systems, slag treatment system and tail gas absorbing system;
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 a step liquid muddy material pump, 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, be separated 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 be separated slag saving pond and be communicated with, be separated slag saving pond to be communicated with reaction tank by being separated slag transferpump,
Described slag treatment system comprises slag wash trough, slag pressure filter, slag dryer and wastewater disposal basin, the filter-press residues outlet of described main pressure filter is communicated with slag wash trough, described slag wash trough is communicated with the entrance of slag pressure filter by washed-residue transferpump, the filter-press residues outlet of slag pressure filter is communicated with slag dryer, the liquid exit of slag pressure filter is communicated with wastewater disposal basin, and wastewater disposal basin is communicated with modified pond with reaction tank respectively by waste water pump;
Described tail gas absorbing system comprises tail gas absorber and is arranged on the gas skirt above main pressure filter, the exhaust gas entrance of described tail gas absorber is communicated with the exhaust steam passage at gas skirt top with reaction tank, reaction tank transfer pond, modified pond respectively, the absorption liquid entrance of described tail gas absorber is communicated with tap water pipe network, and the absorption liquid outlet of tail gas absorber is communicated with wastewater disposal basin.
The pressure filter that described main pressure filter is identical with the employing structure of slag pressure filter, described pressure filter comprises frame, pressure strip and thrust plate, press filtration unit is provided with between described pressure strip and thrust plate, described frame is provided with the hydro-cylinder for promoting described pressure strip movement, and described thrust plate is provided with material access aperture, described press filtration unit comprises press filtration frame, two pieces of filter press plates be all slidably matched with it are provided with in described press filtration frame, the center correspondence of two pieces of described filter press plates is provided with feed port, and the feed port inner sleeve of two pieces of described filter press plates is equiped with the feed-pipe be slidably matched with it, the two ends end face of described press filtration frame is equipped with filter cloth, the two ends mouth of pipe of described feed-pipe extends respectively and stretches out outside described filter cloth, described press filtration frame is also provided with the driving mechanism for driving two pieces of opposing motions of described filter press plate.
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.
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 induced draft fan.
Further, the filter-press residues outlet of described main pressure filter is communicated with slag wash trough by rotary conveyor, the filter-press residues outlet of described slag pressure filter is communicated with slag dryer by rotary conveyor, described slag wash trough is provided with agitator, the quantity of described slag pressure filter is two and parallel with one another, and described wastewater disposal basin is communicated with tap water pipe network.
Further, described driving mechanism comprises the driver element being separately positioned on the described upper and lower both sides of press filtration frame or the left and right sides, described driver element comprises the erecting frame be arranged on described press filtration frame, described erecting frame is provided with driving hydro-cylinder, the piston rod of described driving hydro-cylinder is provided with the voussoir for driving two pieces of opposing movements of described filter press plate, be provided with the gap coordinated with described voussoir between two pieces of described filter press plates, described press filtration 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 press filtration 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, and the two ends of described chute are respectively equipped with for preventing two pieces of described filter press plates from skidding off position limiting structure outside described press filtration frame.
Further, described frame is provided with the crossbeam for described press filtration single element move guiding.
Further, linkage assembly is equipped with between the outer wall of adjacent two described press filtration frames and near between the described press filtration frame of described pressure strip and the outer wall of described pressure strip, described linkage assembly comprises four two hinge bars, four described pair of hinge bars are hingedly connected together between two and form diamond structure, and wherein two relative summits of described diamond structure to be articulated and connected on adjacent two described press filtration frames or respectively near on the described press filtration frame of described pressure strip and described pressure strip.
The beneficial effects of the utility model are:
1) the utility model is provided with the devices such as reaction tank transfer pond, flocculating agent formulation tank and pressure filter in single step reaction system, be separated the insolubles produced in acid-soluble reaction in these devices by coagulating sedimentation, press filtration, effectively control and reduce the insolubles content in a step liquid;
2) in two step reactive systems, be provided with separate tank, be separated the device such as slag saving pond and flocculating agent formulation tank, insolubles is separated further in these devices by coagulating sedimentation, sedimentation, effective control and the insolubles content reduced in reaction solution, improve the seed output and quality of liquid poly aluminium chloride;
3) slag treatment system is set and tail gas absorbing system processes the filter residue produced in production process, waste water and waste gas and fully utilizes, has saved the production means, decreased discharge, reach the object that environment-protecting clean is produced;
4) by the press filtration unit split of pressure filter being set to press filtration frame and two filter press plates in press filtration frame that are slidably installed, during use, first utilize Driven by Hydraulic Cylinder pressure strip to move all press filtration unit are fixed, filter chamber is formed between adjacent two press filtration frames, then fresh feed pump is utilized to be injected in filter chamber by press filtration material, press filtration material can drive two of press filtration frame pieces of filter press plates move in opposite directions and be adjacent to together, pressurize after filter cake fills filter chamber, start driving mechanism simultaneously and drive the opposing mobile extruding filter chamber of two pieces of filter press plates in press filtration frame, namely filter cake is subject to the pressure effect of fresh feed pump and the squeezing action of filter press plate simultaneously, can be quickly, the liquid filtering contained more up hill and dale falls, and can pressure efficiency be improved.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and beneficial effect clearly, the utility model provides following accompanying drawing to be described:
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 slag treatment system;
Fig. 4 is the structural representation of tail gas absorbing system;
Fig. 5 is the structural representation of pressure filter;
Fig. 6 is the structural representation of press filtration unit;
Fig. 7 is the left view of Fig. 6;
Fig. 8 is the A detail drawing of Fig. 6.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, and to make those skilled in the art better can understand the utility model being implemented, but illustrated embodiment is not as to restriction of the present utility model.
The environment-protecting clean reaction unit of liquid poly aluminium chloride of the present utility model, comprises single step reaction system, two step reactive systems, slag treatment system and tail gas absorbing system.
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 a step liquid muddy material pump 16, 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 a described step liquid muddy material pump 16 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.Hydrochloric acid and processing wastewater is added in reaction tank 11, then the bauxitic clay of formula ratio is dropped into, reacting by heating, reaction product is taked to put into reaction tank transfer pond 12 from stream mode, add the flocculation of poly-propionic acid amide flocculation agent by flocculating agent formulation tank I 13, then pump in main pressure filter 14 by a step liquid muddy material pump 16, reaction tank product is carried out 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, be separated 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 be separated slag saving pond 25 and be communicated with, be separated slag saving pond 25 to be communicated with reaction tank 11 by being separated 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, the reaction of formula ratio calcium aluminate is progressively dropped under agitation condition, after having reacted, material in cooling tower 23 after air cooling, enter separate tank 24 to add flocculation agent and 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 separation slag saving pond 25, when slag in question response pond 11 reaches process stipulation disposal amount, add the reaction of formula ratio hydrochloric acid, sulfuric acid and water, 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 slag treatment system, as shown in the figure, slag treatment system comprises slag wash trough 31, slag pressure filter 32, slag dryer 33 and wastewater disposal basin 34, the filter-press residues outlet of described main pressure filter 14 is communicated with slag wash trough 31, described slag wash trough 31 is communicated with the entrance of slag pressure filter 32 by washed-residue transferpump 35, the filter-press residues outlet of slag pressure filter 32 is communicated with slag dryer 33, the liquid exit of slag pressure filter 32 is communicated with wastewater disposal basin 34, and wastewater disposal basin 34 is communicated with modified pond 21 with reaction tank 11 respectively by waste water pump 36; The filter-press residues outlet of described main pressure filter 14 is communicated with slag wash trough 31 by rotary conveyor, the filter-press residues outlet of described slag pressure filter 32 is communicated with slag dryer 33 by rotary conveyor, described slag wash trough 31 is provided with agitator, the quantity of described slag pressure filter 32 is two and parallel with one another, and described wastewater disposal basin 34 is communicated with tap water pipe network.After the press filtration of main pressure filter 14, filter-press residues enters slag wash trough 31, press filtration again after employing fresh water wash to neutrality, finally enter slag dryer 33 to be taken out by after waste heat boiler steam drying, slag washes and tail gas absorption waste water send into reaction tank 11 after integrating with wastewater disposal basin 34 and modified pond 21 is applied mechanically.
Fig. 4 is the structural representation of tail gas absorbing system, as shown in the figure, the gas skirt that tail gas absorbing system comprises tail gas absorber 41 and is arranged on above main pressure filter 14, the exhaust gas entrance of described tail gas absorber 41 is communicated with the exhaust steam passage at gas skirt top with reaction tank 11, reaction tank transfer pond 12, modified pond 21 respectively, the absorption liquid entrance of described tail gas absorber 41 is communicated with tap water pipe network, and the absorption liquid outlet of tail gas absorber 41 is communicated with wastewater disposal basin 34.What produce in production process is collected into tail gas absorber 41 absorbs containing sour waste gas is unified, absorbs waste water and slag washes and integrates with wastewater disposal basin 34 and send into reaction tank 11 afterwards and modified pond 21 is applied mechanically.
The main pressure filter of the present embodiment adopts with slag pressure filter the pressure filter that structure is identical, the pressure filter of the present embodiment comprises frame 101, pressure strip 102 and thrust plate 103, press filtration unit is provided with between pressure strip 102 and thrust plate 103, frame 101 is provided with the hydro-cylinder 104 for promoting pressure strip 102 movement, and thrust plate 103 is provided with material access aperture 105.Preferably, frame 101 is provided with the crossbeam 106 for press filtration single element move guiding, makes press filtration unit can movement stably, and all press filtration unit can align.Press filtration unit comprises press filtration frame 107, two pieces of filter press plates be all slidably matched with it 108 are provided with in press filtration frame 107, the center correspondence of two pieces of filter press plates 108 is provided with feed port 109, the surrounding of feed port 109 is provided with fluid hole 110, and feed port 109 inner sleeve of two pieces of filter press plates 108 is equiped with the feed-pipe 111 be slidably matched with it, the two ends end face of press filtration frame 107 is equipped with filter cloth 112, the two ends mouth of pipe of feed-pipe 111 extends respectively and stretches out outside filter cloth 112, press filtration frame 107 is also 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 press filtration frame 107 width, can form filter chamber easily between two press filtration unit.
Further, driving mechanism comprises the driver element being separately positioned on press filtration frame about 107 both sides or the left and right sides, and the driver element of the present embodiment is separately positioned on press filtration frame about 107 both sides, can drive filter press plate 108 steadily movement.Driver element comprises the erecting frame 113 be arranged on press filtration frame 107, erecting frame 113 is provided with and drives hydro-cylinder 114, the piston rod of driving hydro-cylinder 114 is provided with the voussoir 115 for driving two pieces of opposing movements of filter press plate 108, be provided with the gap 116 coordinated with voussoir 115 between two pieces of filter press plates 108, press filtration 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 hydro-cylinder 114 to drive voussoir 115 to move, voussoir 115 can be utilized to drive two pieces of opposing movements of filter press plate 108.
On the inwall of the press filtration 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, the two ends of chute 118 are respectively equipped with for preventing two pieces of filter press plates 108 from skidding off position limiting structure outside press filtration frame 107, and the position limiting structure of the present embodiment is the limited block 120 being arranged on press filtration frame 107 two ends.Adopt the press filtration unit of this structure, the movement of filter press plate 108 in press filtration frame 107 can be made more steady.
Further, linkage assembly is equipped with between the outer wall of adjacent two press filtration frames 107 and near between the press filtration frame 107 of pressure strip 108 and the outer wall of pressure strip 102, linkage assembly comprises four two hinge bars 121, four two hinge bars 121 are hingedly connected together between two and form diamond structure, wherein two relative summits of diamond structure to be articulated and connected respectively on adjacent two press filtration frames 107 or near the press filtration frame 107 of pressure strip 108 with on pressure strip 102.By arranging linkage assembly, when hydro-cylinder 104 drives pressure strip 102 to move, under the effect of linkage assembly, all press filtration frames 107 all can be slided along crossbeam 106 by driving, namely can realize the opening and closing of filter chamber easily.
The above embodiment is only for absolutely proving the preferred embodiment that the utility model is lifted, and protection domain of the present utility model is not limited thereto.The equivalent alternative or conversion that those skilled in the art do on the utility model basis, all within protection domain of the present utility model.Protection domain of the present utility model is as the criterion with claims.
Claims (9)
1. an environment-protecting clean reaction unit for liquid poly aluminium chloride, is characterized in that: comprise single step reaction system, two step reactive systems, slag treatment system and tail gas absorbing system;
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 a step liquid muddy material pump, 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, be separated 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 be separated slag saving pond and be communicated with, be separated slag saving pond to be communicated with reaction tank by being separated slag transferpump,
Described slag treatment system comprises slag wash trough, slag pressure filter, slag dryer and wastewater disposal basin, the filter-press residues outlet of described main pressure filter is communicated with slag wash trough, described slag wash trough is communicated with the entrance of slag pressure filter by washed-residue transferpump, the filter-press residues outlet of slag pressure filter is communicated with slag dryer, the liquid exit of slag pressure filter is communicated with wastewater disposal basin, and wastewater disposal basin is communicated with modified pond with reaction tank respectively by waste water pump;
Described tail gas absorbing system comprises tail gas absorber and is arranged on the gas skirt above main pressure filter, the exhaust gas entrance of described tail gas absorber is communicated with the exhaust steam passage at gas skirt top with reaction tank, reaction tank transfer pond, modified pond respectively, the absorption liquid entrance of described tail gas absorber is communicated with tap water pipe network, and the absorption liquid outlet of tail gas absorber is communicated with wastewater disposal basin;
The pressure filter that described main pressure filter is identical with the employing structure of slag pressure filter, described pressure filter comprises frame, pressure strip and thrust plate, press filtration unit is provided with between described pressure strip and thrust plate, described frame is provided with the hydro-cylinder for promoting described pressure strip movement, and described thrust plate is provided with material access aperture, described press filtration unit comprises press filtration frame, two pieces of filter press plates be all slidably matched with it are provided with in described press filtration frame, the center correspondence of two pieces of described filter press plates is provided with feed port, and the feed port inner sleeve of two pieces of described filter press plates is equiped with the feed-pipe be slidably matched with it, the two ends end face of described press filtration frame is equipped with filter cloth, the two ends mouth of pipe of described feed-pipe extends respectively and stretches out outside described filter cloth, described press filtration frame is also provided with the driving mechanism for driving two pieces of opposing motions of described filter press plate.
2. the environment-protecting clean reaction unit of liquid poly aluminium 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.
3. the environment-protecting clean reaction unit of liquid poly aluminium chloride according to claim 1, it is characterized in that: described modified pond, separate tank, separation slag saving pond and flocculating agent formulation tank II are equipped with agitator, described cooling tower is the cooling tower being provided with induced draft fan.
4. the environment-protecting clean reaction unit of liquid poly aluminium chloride according to claim 1, it is characterized in that: the filter-press residues outlet of described main pressure filter is communicated with slag wash trough by rotary conveyor, the filter-press residues outlet of described slag pressure filter is communicated with slag dryer by rotary conveyor, described slag wash trough is provided with agitator, the quantity of described slag pressure filter is two and parallel with one another, and described wastewater disposal basin is communicated with tap water pipe network.
5. the environment-protecting clean reaction unit of liquid poly aluminium chloride according to any one of claim 1-4, it is characterized in that: described driving mechanism comprises the driver element being separately positioned on the described upper and lower both sides of press filtration frame or the left and right sides, described driver element comprises the erecting frame be arranged on described press filtration frame, described erecting frame is provided with driving hydro-cylinder, the piston rod of described driving hydro-cylinder is provided with the voussoir for driving two pieces of opposing movements of described filter press plate, the gap coordinated with described voussoir is provided with between two pieces of described filter press plates, described press filtration frame is provided with the through hole passed through for described voussoir.
6. the environment-protecting clean reaction unit of liquid poly aluminium chloride according to claim 5, is characterized in that: the cross section of described voussoir is isosceles triangle.
7. the environment-protecting clean reaction unit of liquid poly aluminium chloride according to claim 1, it is characterized in that: on the inwall of described press filtration 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, and the two ends of described chute are respectively equipped with for preventing two pieces of described filter press plates from skidding off position limiting structure outside described press filtration frame.
8. the environment-protecting clean reaction unit of liquid poly aluminium chloride according to claim 1, is characterized in that: described frame is provided with the crossbeam for described press filtration single element move guiding.
9. the environment-protecting clean reaction unit of liquid poly aluminium chloride according to claim 1, it is characterized in that: between the outer wall of adjacent two described press filtration frames, and be equipped with linkage assembly near between the described press filtration frame of described pressure strip and the outer wall of described pressure strip, described linkage assembly comprises four two hinge bars, four described pair of hinge bars are hingedly connected together between two and form diamond structure, wherein two relative summits of described diamond structure to be articulated and connected on adjacent two described press filtration frames or respectively near on the described press filtration frame of described pressure strip and described pressure strip.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106830035A (en) * | 2017-02-24 | 2017-06-13 | 南通大学 | The device of water purification agent is prepared using aluminium ash |
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2014
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106830035A (en) * | 2017-02-24 | 2017-06-13 | 南通大学 | The device of water purification agent is prepared using aluminium ash |
| CN106830035B (en) * | 2017-02-24 | 2018-01-09 | 南通大学 | The device of water purification agent is prepared using aluminium ash |
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| C14 | Grant of patent or utility model | ||
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| 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: 20150708 Termination date: 20171224 |