CN104743594A - Production device of poly-aluminum chloride - Google Patents
Production device of poly-aluminum chloride Download PDFInfo
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- CN104743594A CN104743594A CN201310748338.0A CN201310748338A CN104743594A CN 104743594 A CN104743594 A CN 104743594A CN 201310748338 A CN201310748338 A CN 201310748338A CN 104743594 A CN104743594 A CN 104743594A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention discloses a production device of poly-aluminum chloride. The production device comprises an acid tank system, a first-step reaction system, a second-step reaction system, a roller drying system, a breaking packaging system, a residue treatment system, a tail gas absorption system and a boiler system. The production device of poly-aluminum chloride is used for producing poly-aluminum chloride by adopting an acid-soluble two-step method of bauxite and calcium aluminate, a flocculating agent preparation tank, a press filter and a separation tank are arranged in each of the first-step reaction system and the second-step reaction system, and insoluble substances generated in the production are separated by virtue of coagulation sedimentation, so that the yield and quality of a poly-aluminum chloride product are improved; meanwhile, the residue treatment system and the tail gas absorption system are used for treating and comprehensively utilizing the filter residues, wastewater and waste gases generated in the production, so that production materials are saved, emissions are reduced, and the aim of environment-friendly and clean production is achieved; and moreover, coal fired heat energy and flue gas waste heat are fully utilized, so that the aims of saving energy, reducing consumption and reducing the production cost are achieved.
Description
Technical field
The invention belongs to poly aluminium chloride production technical field, relate to a kind of poly aluminium chloride production equipment.
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.
At present built poly aluminium chloride production equipment, for the separating treatment of the insolubless such as the calcium chloride produced in simplification of flowsheet, production process, 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 energy-saving and cost-reducing, environment-protecting clean productions.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of poly aluminium chloride production equipment, simplification of flowsheet, and to comprehensive treating process and the recycling such as various filter residues, waste water, waste gas that produce in production process, makes that the production of poly aluminium chloride is energy-saving and cost-reducing, environment-protecting clean.
For achieving the above object, the invention provides following technical scheme:
Poly aluminium chloride production equipment of the present invention, comprises sour can system, single step reaction system, two step reactive systems, roller drying system, crushing packing system, slag treatment system, tail gas absorbing system and boiler systems;
Described sour can system comprises sulfuric acid storage tank system and hydrochloric acid tank system, sulfuric acid storage tank system comprises sulfuric acid storage tank and sulfuric acid unloading pump, sulfuric acid pump outlet of unloading is communicated with sulfuric acid storage tank, hydrochloric acid tank system comprises hydrochloric acid tank, hydrochloric acid unloading pump and hydrochloric acid transferpump, hydrochloric acid pump outlet of unloading is communicated with hydrochloric acid tank, and the entrance of hydrochloric acid transferpump is communicated with hydrochloric acid tank;
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 hydrochloric acid conveying pump outlet is communicated with reaction tank, described sulfuric acid storage tank is communicated with reaction tank, described reaction tank is provided with bauxitic clay 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 roller drying system comprises dry liquid high level tank, drying drum and finished belt transfer roller, described work in-process pond is communicated with dry liquid high level tank by work in-process liquid pump, dry liquid high level tank is communicated with the dry liquid entrance of drying drum, and the solid outlet of drying drum is just to finished belt transfer roller;
Described crushing packing system comprises feeding hopper, crusher, chapelet, finished product bin and metering packing system, described finished belt transfer roller is connected with feeding hopper, feeding hopper is connected with crusher, crusher is connected with chapelet, chapelet is connected with finished product bin, and finished product bin is connected with metering packing system;
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;
Described boiler systems comprises heat conducting oil boiler, waste heat boiler, desulfation dust-extraction device and high-altitude chimney, described heat conducting oil boiler is communicated with drying drum by heat conducting oil pipe, heat conducting oil boiler is communicated with waste heat boiler by coal-fired flue-gas pipeline, waste heat boiler is communicated with tap water pipe network, the vapour outlet of waste heat boiler is communicated with slag dryer with reaction tank, modified pond respectively, the exhanst gas outlet of waste heat boiler is communicated with the smoke inlet of desulfation dust-extraction device, and the exhanst gas outlet of desulfation dust-extraction device is communicated with high-altitude chimney.
Further, the quantity of described sulfuric 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 transferpump 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.
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 quantity of described drying drum is 20 and parallel with one another, and described drying drum is provided with high-altitude vapor discharge channel, and the quantity of described work in-process liquid pump is two and parallel with one another.
Further, 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.
Beneficial effect of the present invention is:
1) poly aluminium chloride production equipment of the present invention is the device that the acid-soluble two-step approach of bauxitic clay and calcium aluminate produces poly aluminium chloride, and in single step reaction system and two step reactive systems, the devices such as flocculating agent formulation tank, pressure filter and separate tank are set, by the insolubles produced in coagulating sedimentation separation of produced, improve the seed output and quality of poly aluminium chloride product;
2) 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;
3) heat conducting oil boiler and waste heat boiler are set in boiler systems, coal heat type heat and fume afterheat are made full use of, unification provides heat energy to roller drying, reaction tank heating, slag oven dry etc., greatly reduce the consumption of poly aluminium chloride production to fire coal, reach energy-saving and cost-reducing, to reduce production cost object.
Accompanying drawing explanation
In order to make object of the present invention, technical scheme and beneficial effect clearly, the invention provides following accompanying drawing and being described:
Fig. 1 is integrated artistic schema of the present invention;
Fig. 2 is the structural representation of sour can system;
Fig. 3 is the structural representation of single step reaction system;
Fig. 4 is the structural representation of two step reactive systems;
Fig. 5 is the structural representation of roller drying system;
Fig. 6 is the structural representation of crushing packing system;
Fig. 7 is the structural representation of slag treatment system;
Fig. 8 is the structural representation of tail gas absorbing system;
Fig. 9 is the structural representation of boiler systems.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
Fig. 1 is integrated artistic schema of the present invention, and as shown in the figure, the production of poly aluminium chloride is divided into following steps:
(1) the acid-soluble reaction of the first step
In airtight reaction tank, add hydrochloric acid and processing wastewater, then in airtight charging system, progressively automatically drop into formula ratio bauxitic clay, reacting by heating; Reaction product is taked to put into reaction tank transfer pond from stream mode and is added the flocculation of poly-propionic acid amide flocculation agent, then pump in main pressure filter by pump, reaction tank product is carried out the separation of slag liquid, an isolated step liquid pump enters in a step liquid pool, and the slag wash trough that removes slag carries out subsequent disposal.
(2) second step polyreaction
A step liquid pump after metering is entered in modified pond, in airtight charging system, progressively automatically drops into the reaction of formula ratio calcium aluminate under agitation condition, and add calcium carbonate adjust ph; After having reacted, material in cooling tower after air cooling, enter separate tank and add flocculation agent and carry out flocculation separation, after quiescent settling, supernatant liquor is put into work in-process pond, flocculation separation pulp pump enters in reaction tank, treats to react disposal again.
(3) roller drying
In work in-process pond, work in-process liquid is by the dry liquid high level tank of pump suction, carries out high temperature dehydration drying by high level tank distribution feed liquid to each drying drum; Boiler systems for dry heat supply adopts the organic heat conducting oil boiler of direct combustion type coal hot-air of band dedusting, and coal-fired flue-gas absorbs after waste heat, after desulfation dust-extraction device desulfurization and dedusting, through high-altitude smoke stack emission through waste heat boiler.
(4) finished product crushing packing
Solid poly aluminium chloride through roller drying enters finished product bin after crusher in crushing, then calculates packaging.
(5) reaction of slag system one step liquid is separated
When slag in question response pond 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 by previous process flow process and carries out flocculation separation.
(6) filter-press residues and pollutant treatment
Material after the flocculation separation of reaction tank transfer pond, after main pressure filter press filtration, filter-press residues enters slag wash trough, and press filtration again after employing fresh water wash to neutrality, finally enters slag dryer and taken out by after waste heat boiler steam drying; What produce in production process is collected into tail gas absorber absorbs containing sour waste gas is unified, absorbs waste water and slag washes and merges and send into reaction tank afterwards and modified pond is applied mechanically.
Poly aluminium chloride production equipment of the present invention, comprises sour can system, single step reaction system, two step reactive systems, roller drying system, crushing packing system, slag treatment system, tail gas absorbing system and boiler systems.
Fig. 2 is the structural representation of sour can system, as shown in the figure, acid can system comprises sulfuric acid storage tank system and hydrochloric acid tank system, sulfuric acid storage tank system comprises sulfuric acid storage tank 11 and sulfuric acid unloading pump 12, the outlet of sulfuric acid unloading pump 12 is communicated with sulfuric acid storage tank 11, hydrochloric acid tank system comprises hydrochloric acid tank 13, hydrochloric acid unloading pump 14 and hydrochloric acid transferpump 15, and the outlet of hydrochloric acid unloading pump 14 is communicated with hydrochloric acid tank 13, and the entrance of hydrochloric acid transferpump 15 is communicated with hydrochloric acid tank 13; The quantity of described sulfuric 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 transferpump 15 is two and parallel with one another.Sulfuric acid from tank car for sulphuric acid use pumps into sulfuric acid storage tank 11 by sulfuric 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. 3 is the structural representation of single step reaction system, as shown in the figure, single step reaction system comprises 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 transferpump 15 is communicated with reaction tank 21, described sulfuric acid storage tank 11 is communicated with reaction tank 21, described reaction tank 21 is provided with bauxitic clay charging opening, reaction tank 21 is communicated with reaction tank transfer pond 22, flocculating agent formulation tank I 23 is communicated with reaction tank transfer pond 22, reaction tank transfer pond 22 is communicated with the entrance of main pressure filter 24 by a step liquid muddy material pump 26, the liquid exit of main pressure filter 24 is communicated with a step liquid pool 25, 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 processing wastewater is added in reaction tank 21, then the bauxitic clay of formula ratio is dropped into, reacting by heating, reaction product is taked to put into reaction tank transfer pond 22 from stream mode, add the flocculation of poly-propionic acid amide flocculation agent by flocculating agent formulation tank I 23, then pump in main pressure filter 24 by a step liquid muddy material pump 26, reaction tank product is carried out the separation of slag liquid, an isolated step liquid pump enters in a step liquid pool 25, and the slag wash trough that removes slag carries out subsequent disposal.
Fig. 4 is the structural representation of two step reactive systems, as shown in the figure, two step reactive systems comprise modified pond 31, transfer pond, modified pond 32, cooling tower 33, separate tank 34, be separated slag saving pond 35, flocculating agent formulation tank II 36 and work in-process pond 37, a described step liquid pool 25 is communicated with modified pond 31 by a step liquid transferpump 38, described modified pond 31 is provided with calcium aluminate charging opening, modified pond 31 is communicated with transfer pond, modified pond 32, transfer pond, modified pond 32 is communicated with the entrance of cooling tower 33 by modified liquid transferpump 39, the outlet of cooling tower 33 is communicated with separate tank 34, flocculating agent formulation tank II 36 is communicated with separate tank 34, the top of separate tank 34 is communicated with work in-process pond 37, the bottom of separate tank 34 be separated slag saving pond 35 and be communicated with, be separated slag saving pond 35 to be communicated with reaction tank 21 by being separated slag transferpump 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 for being provided with the cooling tower of induced draft fan.By a step liquid transferpump 38, a step liquid pump is entered in modified pond 31, the reaction of formula ratio calcium aluminate is progressively dropped under agitation condition, after having reacted, material in cooling tower 33 after air cooling, enter separate tank 34 to add flocculation agent and carry out flocculation separation, after quiescent settling, supernatant liquor is put into work in-process pond 37; Flocculation separation slag pumps into reaction tank 21 from separation slag saving pond 35, when slag in question response pond 21 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 22 by previous process flow process and carries out flocculation separation.
Fig. 5 is the structural representation of roller drying system, as shown in the figure, roller drying system comprises dry liquid high level tank 41, drying drum 42 and finished belt transfer roller 43, described work in-process pond 37 is communicated with dry liquid high level tank 41 by work in-process liquid pump 44, dry liquid high level tank 41 is communicated with the dry liquid entrance of drying drum 42, and the solid outlet of drying drum 42 is just to finished belt transfer roller 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 work in-process liquid pump 44 is two and parallel with one another.In work in-process pond 37, work in-process liquid is by the dry liquid high level tank 41 of work in-process liquid pump 44 suction, carry out high temperature dehydration drying by dry liquid high level tank 41 feed liquid that distributes to each drying drum 42, the solid poly aluminium chloride through roller drying is carried by finished belt transfer roller 43.
Fig. 6 is the structural representation of crushing packing system, as shown in the figure, crushing packing system comprises feeding hopper 51, crusher 52, chapelet 53, finished product bin 54 and metering packing system 55, described finished belt transfer roller 43 is connected with feeding hopper 51, feeding hopper 51 is connected with crusher 52, crusher 52 is connected with chapelet 53, and chapelet 53 is connected with finished product bin 54, and finished product bin 54 is connected with metering packing system 55.Solid poly aluminium chloride enters finished product bin 54 after crusher 52 fragmentation, then calculates packaging.
Fig. 7 is the structural representation of slag treatment system, as shown in the figure, slag treatment system comprises slag wash trough 61, slag pressure filter 62, slag dryer 63 and wastewater disposal basin 64, the filter-press residues outlet of described main pressure filter 24 is communicated with slag wash trough 61, described slag wash trough 61 is communicated with the entrance of slag pressure filter 62 by washed-residue transferpump 65, the filter-press residues outlet of slag pressure filter 62 is communicated with slag dryer 63, the liquid exit of slag pressure filter 62 is communicated with wastewater disposal basin 64, and wastewater disposal basin 64 is communicated with modified pond 31 with reaction tank 21 respectively by waste water pump 66; The filter-press residues outlet of described main pressure filter 24 is communicated with slag wash trough 61 by rotary conveyor, the filter-press residues outlet of described slag pressure filter 62 is communicated with slag dryer 63 by rotary conveyor, described slag wash trough 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 is communicated with tap water pipe network.After the press filtration of main pressure filter 24, filter-press residues enters slag wash trough 61, press filtration again after employing fresh water wash to neutrality, finally enter slag dryer 63 to be taken out by 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. 8 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 71 and is arranged on above main pressure filter 24, the exhaust gas entrance of described tail gas absorber 71 is communicated with the exhaust steam passage at gas skirt top with reaction tank 21, reaction tank transfer pond 22, modified pond 31 respectively, the absorption liquid entrance of described tail gas absorber 71 is communicated with tap water pipe network, and the absorption liquid outlet of tail gas absorber 71 is communicated with wastewater disposal basin 64.What produce in production process is collected into tail gas absorber 71 absorbs containing sour waste gas is unified, absorbs waste water and slag washes and integrates with wastewater disposal basin 64 and send into reaction tank 21 afterwards and modified pond 31 is applied mechanically.
Fig. 9 is the structural representation of boiler systems, as shown in the figure, boiler systems comprises heat conducting oil boiler 81, waste heat boiler 82, desulfation dust-extraction device 83 and high-altitude chimney 84, described heat conducting oil boiler 81 is communicated with drying drum 42 by heat conducting oil pipe, heat conducting oil boiler 81 is communicated with waste heat boiler 82 by coal-fired flue-gas pipeline, waste heat boiler 82 is communicated with tap water pipe network, the vapour outlet of waste heat boiler 82 respectively with reaction tank 21, modified pond 31 is communicated with slag dryer 63, the exhanst gas outlet of waste heat boiler 82 is communicated with the smoke inlet of desulfation dust-extraction device 83, the exhanst gas outlet of desulfation dust-extraction device 83 is communicated with high-altitude chimney 84.Heat conducting oil boiler 81 is drying drum 42 heat supply by thermal oil, and the coal-fired flue-gas of heat conducting oil boiler 81 absorbs waste heat for generating steam through waste heat boiler 82, steam is reaction tank 21, modified pond 31 and slag dryer 63 heat supply, coal-fired flue-gas through desulfation dust-extraction device 83 desulfurization and dedusting, discharges through high-altitude chimney 84 after waste heat boiler 82.
What finally illustrate is, above preferred embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although by above preferred embodiment to invention has been detailed description, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from claims of the present invention limited range.
Claims (6)
1. a poly aluminium chloride production equipment, is characterized in that: comprise sour can system, single step reaction system, two step reactive systems, roller drying system, crushing packing system, slag treatment system, tail gas absorbing system and boiler systems;
Described sour can system comprises sulfuric acid storage tank system and hydrochloric acid tank system, sulfuric acid storage tank system comprises sulfuric acid storage tank and sulfuric acid unloading pump, sulfuric acid pump outlet of unloading is communicated with sulfuric acid storage tank, hydrochloric acid tank system comprises hydrochloric acid tank, hydrochloric acid unloading pump and hydrochloric acid transferpump, hydrochloric acid pump outlet of unloading is communicated with hydrochloric acid tank, and the entrance of hydrochloric acid transferpump is communicated with hydrochloric acid tank;
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 hydrochloric acid conveying pump outlet is communicated with reaction tank, described sulfuric acid storage tank is communicated with reaction tank, described reaction tank is provided with bauxitic clay 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 roller drying system comprises dry liquid high level tank, drying drum and finished belt transfer roller, described work in-process pond is communicated with dry liquid high level tank by work in-process liquid pump, dry liquid high level tank is communicated with the dry liquid entrance of drying drum, and the solid outlet of drying drum is just to finished belt transfer roller;
Described crushing packing system comprises feeding hopper, crusher, chapelet, finished product bin and metering packing system, described finished belt transfer roller is connected with feeding hopper, feeding hopper is connected with crusher, crusher is connected with chapelet, chapelet is connected with finished product bin, and finished product bin is connected with metering packing system;
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;
Described boiler systems comprises heat conducting oil boiler, waste heat boiler, desulfation dust-extraction device and high-altitude chimney, described heat conducting oil boiler is communicated with drying drum by heat conducting oil pipe, heat conducting oil boiler is communicated with waste heat boiler by coal-fired flue-gas pipeline, waste heat boiler is communicated with tap water pipe network, the vapour outlet of waste heat boiler is communicated with slag dryer with reaction tank, modified pond respectively, the exhanst gas outlet of waste heat boiler is communicated with the smoke inlet of desulfation dust-extraction device, and the exhanst gas outlet of desulfation dust-extraction device is communicated with high-altitude chimney.
2. poly aluminium chloride production equipment according to claim 1, it is characterized in that: the quantity of described sulfuric 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 transferpump is two and parallel with one another.
3. poly aluminium chloride production equipment 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.
4. poly aluminium chloride production equipment according to claim 1, is characterized in that: described modified pond, separate tank, separation slag saving pond and flocculating agent formulation tank II are equipped with agitator, and described cooling tower is the cooling tower being provided with induced draft fan.
5. poly aluminium chloride production equipment according to claim 1, is characterized in that: the quantity of described drying drum is 20 and parallel with one another, and described drying drum is provided with high-altitude vapor discharge channel, and the quantity of described work in-process liquid pump is two and parallel with one another.
6. poly aluminium chloride production equipment 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.
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| CN108341477A (en) * | 2018-02-09 | 2018-07-31 | 无锡日月水处理有限公司 | The method of Combined Treatment industrial emissions |
| CN111908491A (en) * | 2020-08-22 | 2020-11-10 | 刘洪亮 | Process for producing polyaluminum chloride by using waste aluminum slag and aluminum ash |
| CN112110465A (en) * | 2020-08-28 | 2020-12-22 | 宁夏中宁县兴日晟环保科技有限公司 | Preparation method of polyaluminium chloride for polyaluminium chloride flocculating agent |
| CN115340117A (en) * | 2022-08-24 | 2022-11-15 | 中国恩菲工程技术有限公司 | Device and method for preparing water purifying agent by recycling wastes |
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