CN203683135U - Solid polyaluminium chloride (PAC) production system using conduction oil type drum for drying - Google Patents
Solid polyaluminium chloride (PAC) production system using conduction oil type drum for drying Download PDFInfo
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- CN203683135U CN203683135U CN201320768228.6U CN201320768228U CN203683135U CN 203683135 U CN203683135 U CN 203683135U CN 201320768228 U CN201320768228 U CN 201320768228U CN 203683135 U CN203683135 U CN 203683135U
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Abstract
The utility model discloses a solid polyaluminium chloride (PAC) production system using a conduction oil type drum for drying. The production system comprises a one-step reaction system, a two-step reaction system and a drying system, wherein the one-step reaction system comprises a reaction tank, a reaction tank transfer tank, a flocculant preparation tank I, main filter presses and one-step liquid tanks; the two-step reaction system comprises a tempering tank, a tempering tank transfer tank, a cooling tower, a separation tank, a separated slag storage tank, a flocculant preparation tank II and a semi-finished product tank; the drying system comprises a drying liquid high level tank, a drum drying device and a finished product belt conveyor; the drum drying device comprises a plurality of drying units; each drying unit comprises a drying drum, a scraper, a feed liquid disc, a feed pipe and a material receiving plate. The production system effectively controls and reduces the content of insoluble substances in the reaction liquid, increases the yield and quality of a final solid PAC product, and saves energy and reduces consumption in production of solid PAC.
Description
Technical field
The utility model belongs to poly aluminium chloride production technical field, relates to a kind of solid poly aluminium chloride production system that uses heat conducting oil type roller drying.
Background technology
Poly aluminium chloride, is commonly called as water purification agent, has another name called polymerize aluminum chloride, is called for short poly-aluminium, english name PAC; It is the cationic inorganic polymer flocculant of a kind of poly-hydroxy, multinuclear complexing body, and solid phase prod outward appearance is sorrel, yellow or white solid powder, and its chemical molecular formula is [AL
2(OH)
ncL
6-n]
m(in formula, 1≤n≤5, m≤10), wherein m represents extent of polymerization, and n represents the neutral degree of PAC product, soluble in water, there is stronger bridge formation adsorptivity, in hydrolytic process, follow the physicsization such as electrochemistry, cohesion, absorption and precipitation to change, the final [AL that generates
2(OH)
3(OH)
3], thereby reach purification object.
The fundamental difference of poly aluminium chloride and traditional inorganic coagulant is that traditional inorganic coagulant is low molecular crystal salt, and the structure of poly aluminium chloride is made up of the changeable polynary carboxyl complex compound of form, flocculation sediment speed is fast, be suitable for pH value wide ranges, to pipe-line equipment non-corrosiveness, purifying water effect is obvious, can effectively prop up the heavy metal ion such as middle chromaticness SS, COD, BOD and arsenic, mercury that dewater, and this product is widely used in tap water, process water and sewage treatment area.
Poly aluminium chloride is divided into form and is divided into two kinds: a. liquid poly aluminium chloride is undried form, have and need not dilute, load and unload advantage easy to use, price is relatively cheap, shortcoming is traffic requirements tank car, and unit cost increases (solid per ton is equivalent to 2-3 ton liquid); B. solid poly aluminium chloride is dried form, has the advantage of convenient transportation, while not needing tank car, shortcoming to be use, also needs dilution, increases working strength.
The raw material of producing poly aluminium chloride mainly contains two large classes: a class is aluminum-containing mineral, comprises bauxite (gibbsite, boehmite, diaspore), clay, kaolin, alunite etc.; Another kind of is other aluminum-containing raw material, comprises metallic aluminium, aluminium scrap bits, grey aluminium, aluminium hydroxide, aluminum chloride, coal gangue, flyash etc.The method of producing at present poly aluminium chloride mainly contains metallic aluminium (comprising aluminium ash, lead skim) method, active aluminium hydroxide method, aluminium sesquioxide (comprising bauxitic clay, coal gangue etc.) method, crystal aluminum chloride method etc.
At present built solid poly aluminium chloride production equipment, majority be that bauxitic clay and calcium aluminate two-step approach are produced liquid poly aluminium chloride, then liquid poly aluminium chloride is dried with spraying or roller drying is the device of solid poly aluminium chloride.The following shortcoming of existing solid poly aluminium chloride production equipment ubiquity:
1) in the acid-soluble reaction of the first step and second step polyreaction, all can produce a large amount of insolubless and be difficult to separate with reaction solution, cause insolubles severe overweight in final solid poly aluminium chloride product;
2) the roller drying device heat exchanger effectiveness using is not high, heats inhomogeneously, can not effectively utilize the heat energy of thermal oil, is unfavorable for energy-saving and cost-reducing and reduces discharging;
3) dehumidification system flow setting is reasonable not, causes energy consumption for drying high cost, and the transportation processing of the solid poly aluminium chloride of process roller drying also relatively wastes time and energy.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of solid poly aluminium chloride production system that uses heat conducting oil type roller drying, the effectively insolubles content in control and reduction reaction solution, improve output and the quality of final solid poly aluminium chloride product, and make the production of solid poly aluminium chloride energy-saving and cost-reducing.
For achieving the above object, the utility model provides following technical scheme:
The solid poly aluminium chloride production system of use heat conducting oil type roller drying of the present utility model, comprises single step reaction system, two step reactive system and dehumidification systems;
Described single step reaction system comprises reaction tank, reaction tank transfer pond, flocculating agent formulation tank I, main pressure filter and a step liquid pool, described reaction tank is provided with bauxitic clay charging opening and acid solution charging opening, reaction tank is communicated with reaction tank transfer pond, flocculating agent formulation tank I is communicated with reaction tank transfer pond, reaction tank transfer pond is communicated with the entrance of main pressure filter by the muddy material pump of a step liquid, and the liquid exit of main pressure filter is communicated with a step liquid pool;
Described two step reactive systems comprise modified pond, modified Chi Zhongzhuanchi, cooling tower, separate tank, separate slag saving pond, flocculating agent formulation tank II and work in-process pond, a described step liquid pool is communicated with modified pond by a step liquid transferpump, described modified pond is provided with calcium aluminate charging opening, modified pond is communicated with modified Chi Zhongzhuanchi, modified Chi Zhongzhuanchi is communicated with the entrance of cooling tower by modified liquid transferpump, the outlet of cooling tower is communicated with separate tank, flocculating agent formulation tank II is communicated with separate tank, the top of separate tank is communicated with work in-process pond, the bottom of separate tank with separate slag saving pond be communicated with, separating slag saving pond is communicated with reaction tank by separating slag transferpump,
Described dehumidification system comprises dry liquid high level tank, roller drying device and finished belt transfer roller; Described roller drying device comprises several drying units, and each drying unit comprises drying drum, scraper, feed liquid dish, feed-pipe and the plate that connects material; Described drying drum comprises urceolus, inner core, oil inlet pipe, oil outlet pipe, splitter and spray bar, described urceolus is coated between inner core and urceolus and inner core and forms oil pocket, described spray bar is arranged in oil pocket and spray bar is provided with nozzle opening, described oil inlet pipe one end is stretched into oil pocket and is communicated with spray bar by splitter from urceolus end face, and oil pocket is stretched into from urceolus other end in described oil outlet pipe one end; The blade of described scraper is close to outer tube outer surface, and described feed liquid dish is arranged at urceolus below and urceolus bottom is positioned at feed liquid dish, and the described feed-pipe mouth of pipe is just to feed liquid dish, described in the plate that connects material tilt to install, on the plate that connects material, rectify scraper; Described work in-process pond is communicated with dry liquid high level tank by work in-process liquid pump, and dry liquid high level tank is communicated with the feed-pipe of roller drying device, under the plate that connects material of roller drying device, rectifies finished belt transfer roller.
Further, described reaction tank, reaction tank transfer pond and flocculating agent formulation tank I are equipped with agitator, the quantity of the muddy material pump of a described step liquid is two and parallel with one another, and the quantity of described main pressure filter is three and parallel with one another, and the quantity of a described step liquid pool is four and parallel with one another.
Further, described modified pond, separate tank, separation slag saving pond and flocculating agent formulation tank II are equipped with agitator, and described cooling tower is the cooling tower that is provided with induced draft fan.
Further, the nozzle opening on described spray bar is just to urceolus.
Further, on two end faces of described urceolus, be respectively equipped with axle sleeve, described oil inlet pipe and oil outlet pipe are provided with sealing-ring respectively through axle sleeve and body and axle sleeve.
Further, each drying unit also comprises the dust gathering arrester that is arranged at urceolus top.
Further, the quantity of described drying unit is 20.
The beneficial effects of the utility model are:
1) the utility model arranges the devices such as flocculating agent formulation tank, pressure filter and separate tank in single step reaction system and two step reactive systems, by the insolubles producing in coagulating sedimentation separation of produced, improve output and the quality of final solid poly aluminium chloride product;
2) the utility model is provided with dry liquid high level tank, first by dry the suction of liquid poly aluminium chloride liquid high level tank, carrying out high temperature dehydration by dry liquid high level tank distribution feed liquid to each drying unit of roller drying device is dried, thereby the object that has reached uniform distribution with succinct technical process efficiently, has reduced energy consumption for drying cost;
3) roller drying device that the utility model uses is high-efficiency heat conduction oil formula roller drying device, this device adopts the form of spray that thermal oil is sprayed onto on cylinder surface, forming oil film contacts with cylinder, can at utmost realize the contact area of thermal oil and cylinder surface, thereby improve the efficiency of its heat exchange, realize maximum utilization to heat in thermal oil, can save energy, consumption reduction reduces discharging;
4) the utility model is also provided with the finished belt transfer roller matching with drying drum, the product centralized collection of multiple cylinders being produced by finished belt transfer roller is carried, avoid artificially collecting and transported drying products, greatly reduced labour intensity, saved cost.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and beneficial effect clearer, the utility model provides following accompanying drawing to describe:
Fig. 1 is the structural representation of single step reaction system;
Fig. 2 is the structural representation of two step reactive systems;
Fig. 3 is the structural representation of dehumidification system.
Fig. 4 is the main TV structure schematic diagram of a drying unit of roller drying device;
Fig. 5 is the left TV structure schematic diagram of a drying unit of roller drying device;
Fig. 6 is the structural representation that drying drum and finished belt transfer roller are used in conjunction with.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
The solid poly aluminium chloride production system of use heat conducting oil type roller drying of the present utility model, comprises single step reaction system, two step reactive system and dehumidification systems.
Fig. 1 is the structural representation of single step reaction system, as shown in the figure, single step reaction system comprises reaction tank 11, reaction tank transfer pond 12, flocculating agent formulation tank I 13, main pressure filter 14 and a step liquid pool 15, described reaction tank 11 is provided with bauxitic clay charging opening and acid solution charging opening, reaction tank 11 is communicated with reaction tank transfer pond 12, flocculating agent formulation tank I 13 is communicated with reaction tank transfer pond 12, reaction tank transfer pond 12 is communicated with the entrance of main pressure filter 14 by the muddy material pump 16 of a step liquid, and the liquid exit of main pressure filter 14 is communicated with a step liquid pool 15.
Fig. 2 is the structural representation of two step reactive systems, as shown in the figure, two step reactive systems comprise modified pond 21, transfer pond, modified pond 22, cooling tower 23, separate tank 24, separate slag saving pond 25, flocculating agent formulation tank II 26 and work in-process pond 27, a described step liquid pool 15 is communicated with modified pond 21 by a step liquid transferpump 28, described modified pond 21 is provided with calcium aluminate charging opening, modified pond 21 is communicated with transfer pond, modified pond 22, transfer pond, modified pond 22 is communicated with the entrance of cooling tower 23 by modified liquid transferpump 29, the outlet of cooling tower 23 is communicated with separate tank 24, flocculating agent formulation tank II 26 is communicated with separate tank 24, the top of separate tank 24 is communicated with work in-process pond 27, the bottom of separate tank 24 with separate slag saving pond 25 and be communicated with, separating slag saving pond 25 is communicated with reaction tank 11 by separating slag transferpump 20.
Fig. 3 is the structural representation of dehumidification system, Fig. 4 is the main TV structure schematic diagram of a drying unit of roller drying device, Fig. 5 is the left TV structure schematic diagram of a drying unit of roller drying device, Fig. 6 is the structural representation that drying drum and finished belt transfer roller are used in conjunction with, as shown in the figure, dehumidification system comprises dry liquid high level tank 31, roller drying device and finished belt transfer roller 32; Described roller drying device comprises several drying units, and each drying unit comprises drying drum 33, scraper 34, feed liquid dish 35, feed-pipe 36 and the plate 37 that connects material; Described drying drum 33 comprises urceolus 331, inner core 332, oil inlet pipe 333, oil outlet pipe 334, splitter 335 and spray bar 336, described urceolus 331 is coated between inner core 332 and urceolus 331 and inner core 332 and forms oil pocket 337, described spray bar 336 is arranged in oil pocket 337 and spray bar 336 is provided with nozzle opening 338, described oil inlet pipe 333 one end are stretched into oil pocket 337 and are communicated with spray bar 336 by splitter 335 from urceolus 331 end faces, and oil pocket 337 is stretched into from urceolus 331 other ends in described oil outlet pipe 334 one end; The blade of described scraper 34 is close to urceolus 331 outside surfaces, described feed liquid dish 35 is arranged at urceolus 331 belows and urceolus 331 bottoms are positioned at feed liquid dish 35, described feed-pipe 36 mouths of pipe are just to feed liquid dish 35, described in the plate 37 that connects material tilt to install, on the plate 37 that connects material, rectify scraper 34; Described work in-process pond 27 is communicated with dry liquid high level tank 31 by work in-process liquid pump 38, and dry liquid high level tank 31 is communicated with the feed-pipe 36 of roller drying device, and the plate that connects material of roller drying device is rectified finished belt transfer roller 32 for 37 times.
Working process of the present utility model is:
1. single step reaction: add hydrochloric acid and processing wastewater in reaction tank 11, then drop into the bauxitic clay of formula ratio, reacting by heating, reaction product is taked to put into reaction tank transfer pond 12 from stream mode, add poly-propionic acid amide flocculation agent flocculation by flocculating agent formulation tank I 13, then pump in main pressure filter 14 by the muddy material pump 16 of a step liquid, reaction tank product is carried out to the separation of slag liquid, an isolated step liquid pump enters in a step liquid pool 15, and the slag wash trough that removes slag carries out subsequent disposal;
2. two step reactions: a step liquid pump is entered in modified pond 21 by a step liquid transferpump 28, under agitation condition, progressively drop into the reaction of formula ratio calcium aluminate, after having reacted, material is interior after air cooling at cooling tower 23, enter separate tank 24 and add flocculation agent to carry out flocculation separation, after quiescent settling, supernatant liquor is put into work in-process pond 27; Flocculation separation slag pumps into reaction tank 11 from separating slag saving pond 25, when slag in question response pond 11 reaches process stipulation disposal amount, add formula ratio hydrochloric acid, sulfuric acid and water reaction, after slag has reacted, material enters reaction tank transfer pond 12 by aforementioned technical process and carries out flocculation separation;
3. dry: in work in-process pond 27, work in-process liquid, by the dry liquid high level tank 31 of work in-process liquid pump 38 suction, carries out high temperature dehydration by dry liquid high level tank 31 distribution feed liquids to each drying unit of roller drying device and is dried; When drying drum 33 is worked, thermal oil after heating is supplied with oil inlet pipe 333 by oil pump, through splitter 335 and spray bar 336, then spray at urceolus 331 internal surfaces, urceolus 331 is heated, thermal oil is under the effect of self gravitation, progressively collect downwards, in the time that the degree of depth of the thermal oil collecting exceedes the height of oil outlet pipe 334, thermal oil is discharged through oil outlet pipe 334, urceolus 331 and inner core 332 rotate in the course of the work, and oil inlet pipe 333 and oil outlet pipe 334 are motionless; When urceolus 331 slow circumvolve after heat-conducting oil heating, liquid poly aluminium chloride in feed liquid dish 35 is film like and is attached to urceolus 331 outside surfaces, moisture is vaporized, fall apart in ambient air, the solid poly aluminium chloride that is attached to urceolus 331 is scraped by scraper 34 in the form of sheets, drop on equably and connect material on plate 37, be then slipped on finished belt transfer roller 32, the solid poly aluminium chloride product centralized collection of multiple cylinders being produced by finished belt transfer roller 32 is carried.
In the present embodiment, described reaction tank 11, reaction tank transfer pond 12 and flocculating agent formulation tank I 13 are equipped with agitator, the quantity of the muddy material pump 16 of a described step liquid is two and parallel with one another, the quantity of described main pressure filter 14 is three and parallel with one another, and the quantity of a described step liquid pool 15 is four and parallel with one another.
In the present embodiment, 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.
In the present embodiment, the nozzle opening 338 on described spray bar 336 is just to urceolus 331; Directly thermal oil is sprayed on urceolus 331 internal surfaces.
In the present embodiment, on 331 two end faces of described urceolus, be respectively equipped with axle sleeve 339, described oil inlet pipe 33 and oil outlet pipe 334 are provided with sealing-ring 330 respectively through axle sleeve 339 and body and axle sleeve; It is in order to prevent that thermal oil from leaking that axle sleeve 339 and sealing-ring 330 are set.
In the present embodiment, each drying unit also comprises the dust gathering arrester 39 that is arranged at urceolus 331 tops; Dust gathering arrester 39 is in order to prevent that dried pulverulent material from dispersing, and causes product loss and contaminate environment.
In the present embodiment, the quantity of described drying unit is 20.
Finally explanation is, above preferred embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is described in detail by above preferred embodiment, but those skilled in the art are to be understood that, can make various changes to it in the form and details, and not depart from the utility model claims limited range.
Claims (7)
1. a solid poly aluminium chloride production system that uses heat conducting oil type roller drying, is characterized in that: comprise single step reaction system, two step reactive system and dehumidification systems;
Described single step reaction system comprises reaction tank, reaction tank transfer pond, flocculating agent formulation tank I, main pressure filter and a step liquid pool, described reaction tank is provided with bauxitic clay charging opening and acid solution charging opening, reaction tank is communicated with reaction tank transfer pond, flocculating agent formulation tank I is communicated with reaction tank transfer pond, reaction tank transfer pond is communicated with the entrance of main pressure filter by the muddy material pump of a step liquid, and the liquid exit of main pressure filter is communicated with a step liquid pool;
Described two step reactive systems comprise modified pond, modified Chi Zhongzhuanchi, cooling tower, separate tank, separate slag saving pond, flocculating agent formulation tank II and work in-process pond, a described step liquid pool is communicated with modified pond by a step liquid transferpump, described modified pond is provided with calcium aluminate charging opening, modified pond is communicated with modified Chi Zhongzhuanchi, modified Chi Zhongzhuanchi is communicated with the entrance of cooling tower by modified liquid transferpump, the outlet of cooling tower is communicated with separate tank, flocculating agent formulation tank II is communicated with separate tank, the top of separate tank is communicated with work in-process pond, the bottom of separate tank with separate slag saving pond be communicated with, separating slag saving pond is communicated with reaction tank by separating slag transferpump,
Described dehumidification system comprises dry liquid high level tank, roller drying device and finished belt transfer roller; Described roller drying device comprises several drying units, and each drying unit comprises drying drum, scraper, feed liquid dish, feed-pipe and the plate that connects material; Described drying drum comprises urceolus, inner core, oil inlet pipe, oil outlet pipe, splitter and spray bar, described urceolus is coated between inner core and urceolus and inner core and forms oil pocket, described spray bar is arranged in oil pocket and spray bar is provided with nozzle opening, described oil inlet pipe one end is stretched into oil pocket and is communicated with spray bar by splitter from urceolus end face, and oil pocket is stretched into from urceolus other end in described oil outlet pipe one end; The blade of described scraper is close to outer tube outer surface, and described feed liquid dish is arranged at urceolus below and urceolus bottom is positioned at feed liquid dish, and the described feed-pipe mouth of pipe is just to feed liquid dish, described in the plate that connects material tilt to install, on the plate that connects material, rectify scraper; Described work in-process pond is communicated with dry liquid high level tank by work in-process liquid pump, and dry liquid high level tank is communicated with the feed-pipe of roller drying device, under the plate that connects material of roller drying device, rectifies finished belt transfer roller.
2. the solid poly aluminium chloride production system of use heat conducting oil type roller drying according to claim 1, it is characterized in that: described reaction tank, reaction tank transfer pond and flocculating agent formulation tank I are equipped with agitator, the quantity of the muddy material pump of a described step liquid is two and parallel with one another, the quantity of described main pressure filter is three and parallel with one another, and the quantity of a described step liquid pool is four and parallel with one another.
3. the solid poly aluminium chloride production system of use heat conducting oil type roller drying 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, and described cooling tower is the cooling tower that is provided with induced draft fan.
4. the solid poly aluminium chloride production system of use heat conducting oil type roller drying according to claim 1, is characterized in that: the nozzle opening on described spray bar is just to urceolus.
5. the solid poly aluminium chloride production system of use heat conducting oil type roller drying according to claim 1, it is characterized in that: on two end faces of described urceolus, be respectively equipped with axle sleeve, described oil inlet pipe and oil outlet pipe are provided with sealing-ring respectively through axle sleeve and body and axle sleeve.
6. the solid poly aluminium chloride production system of use heat conducting oil type roller drying according to claim 1, is characterized in that: each drying unit also comprises the dust gathering arrester that is arranged at urceolus top.
7. the solid poly aluminium chloride production system of use heat conducting oil type roller drying according to claim 1, is characterized in that: the quantity of described drying unit is 20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320768228.6U CN203683135U (en) | 2013-11-29 | 2013-11-29 | Solid polyaluminium chloride (PAC) production system using conduction oil type drum for drying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320768228.6U CN203683135U (en) | 2013-11-29 | 2013-11-29 | Solid polyaluminium chloride (PAC) production system using conduction oil type drum for drying |
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|---|---|
| CN203683135U true CN203683135U (en) | 2014-07-02 |
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|---|---|---|---|
| CN201320768228.6U Expired - Fee Related CN203683135U (en) | 2013-11-29 | 2013-11-29 | Solid polyaluminium chloride (PAC) production system using conduction oil type drum for drying |
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