CN102268696B - Method and apparatus for recovery of remaining alumina and dust collection in alumina discharge station - Google Patents
Method and apparatus for recovery of remaining alumina and dust collection in alumina discharge station Download PDFInfo
- Publication number
- CN102268696B CN102268696B CN 201110205538 CN201110205538A CN102268696B CN 102268696 B CN102268696 B CN 102268696B CN 201110205538 CN201110205538 CN 201110205538 CN 201110205538 A CN201110205538 A CN 201110205538A CN 102268696 B CN102268696 B CN 102268696B
- Authority
- CN
- China
- Prior art keywords
- negative pressure
- aluminum oxide
- tank car
- dust
- alumina
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Refuse Collection And Transfer (AREA)
Abstract
The invention relates to a method and an apparatus for recovery of remaining alumina and dust collection in alumina discharge stations. According to the invention, a negative pressure dust collection system and a fixed type design are employed; main equipment is installed in a central material knockout platform of a discharge station; power for negative pressure is generated by a Roots pump; a gathered material obtained through a material gathering nozzle is conveyed by a wear resistant flexible pipe and a wear resistant pipe network and subjected to three-stage separation of interception by a material storing bunker, separation by a cyclone dust collector and separation by a bag filler; recovered alumina is screened by a flap sieve and returned to a railway alumina tank car which is empty or half-empty after material knockout; and an alumina discharge station dilute phase system is used to convey the recovered alumina to an alumina storing bunker. The advantages of the invention are as follows: the problems of multi-time turning of vehicles, multi-time rising of alumina and incapability of removing impurities in stained alumina on the floor existing in manual digging and manual sweeping of alumina are overcome; valuable resources are recovered; waste is reduced; labor intensity of workers are mitigated; working environment is improved; working efficiency is enhanced; clean production is realized. Therefore, the apparatus provided is applicable to electrolytic aluminum factories, alumina factories, alumina loading and unloading stations and harbors.
Description
One, affiliated technical field
The present invention relates to a kind of aluminum oxide discharge terminal and reclaim clout and collecting method and device, belong to material negative pressure recovery technology field.
Two, background technology
2010, domestic aluminium commercial alumina annual capacity reached 2,100 ten thousand tons, and year import aluminum oxide is 4,500,000 tons simultaneously; This wherein 60% aluminum oxide be transported to electrolytic aluminium factory by railway aluminum oxide tank car.After railway aluminum oxide tank car arrived electrolytic aluminium factory aluminum oxide discharge terminal, the mode of carrying by dilute phase was transported to the aluminum oxide storage bin with the aluminum oxide powder in the tank car.Because the limitation of railway aluminum oxide tank car inner bottom part fluidized-bed design, aluminum oxide powder has the part heals in the dilute phase dnockout is carried rear oxidation aluminium pot car, the 300-500 kilogram is arranged at least, indivedual many then having more than 3000 kilograms also have extremely indivedual failure and special aluminum oxide tank car car load aluminum oxide not show.Simultaneously, the workman takes at the dilute phase dnockout, tears pipe open, in the operation of leaking informaton, and reveal because the blast height causes safety valve action all can produce the part aluminum oxide, so on the electrolytic aluminium factory aluminum oxide discharge terminal station station down, tank car up and down and generally have aluminum oxide to fly upward one deck aluminum oxide of generation on every side.
At having beaten clout problem in the tank car of material back, the way that most of electrolytic aluminium factory is handled the residue aluminum oxide powder in the aluminum oxide tank car is that tank car after having broken material is transferred to access railroad track switch, draws material by manually advancing jar outward with keg.This method workman's workload is big, labour intensity height, inefficiency; Prolonged the vehicle holding time; The inner dust from flying of tank car, summer temp reach about 60 ℃, environment is abominable, and be very big to the workers ' health influence.The aluminum oxide of drawing out in the jar also needs artificial secondary pack, the crane entrucking, transport to aluminum oxide concentrated phase dnockout place by automobile again, crane is unloaded, is manually cut the bag back and by the concentrated phase system this part aluminum oxide got to the aluminum oxide storage bin, draw material, pack, entrucking in this process, transport, unload, each link of dnockout all exists aluminum oxide secondary to fly upward loss, contaminate environment, waste precious resources; Long flow path, labor strength is big; Use equipment is many, energy consumption height, cost of equipment maintenance height; Secondary package is disposable with bag, the expense height, and waste is serious.Owing to above the aluminum oxide tank car bottom fluidization bed wire netting is arranged, manually drawing material is difficult to clean out, drawing the interior general also surplus aluminum oxide powder of having an appointment about 100 kilograms of material back tank car can't reclaim, the loss of annual each factory of only this item is very big, calculate with 500,000 tons of/year electrolytic aluminium factories of a scale, annual loss loses about 1400 tons of aluminum oxide, be worth 390 surplus ten thousand yuan.
About present most of electrolytic aluminium factory aluminum oxide discharge terminal, about the tank car, fly upward unrestrained aluminum oxide on every side, generally take the way of hand sweeping, this method produces reentrainment of dust, and effect is bad.Also have individual management enterprise not in place, the way that indivedual irresponsible workmans take pressurized air to purge, " elimination " aluminum oxide dust, local clean, all blow to the other places of being scattered in the air.Both waste a large amount of precious resources, polluted environment again.
Three, summary of the invention
The objective of the invention is to take full advantage of having ready conditions of aluminum oxide discharge terminal, a kind of aluminium commercial alumina discharge terminal alumina recovery and collecting method and device are provided, with solve repeatedly shunting of drawing manually at present that material and hand sweeping exist, aluminum oxide repeatedly flies upward, landing dirty material can't impurities removal, reclaim precious resources, cut the waste, alleviate labor strength, improve Working environment, raise labour efficiency, realize cleaner production.
The technical solution used in the present invention is as follows:
Aluminum oxide discharge terminal of the present invention reclaims clout and collecting method is: at aluminum oxide discharge terminal central authorities dnockout platform one cover negative pressure dust collecting system is installed, the negative pressure dust collecting system comprises Roots vaccum pump, the storing feed bin, tornado dust collector, sack cleaner, Roots vaccum pump and sack cleaner, tornado dust collector, the storing feed bin is connected in proper order with wear-resisting pipe connecting, be connected with the negative pressure person in charge's net that gathers dust at the storing feed bin, negative pressure is gathered dust and is responsible for net and lays layout along discharge terminal railway direction, gather dust to be responsible in negative pressure and establish a negative pressure pipe network arm corresponding to each jar of tank car position on the net, each negative pressure pipe network props up the rapid-acting coupling of gathering dust of negative pressure of pipe coupling, and the negative pressure rapid-acting coupling of gathering dust seals with sealing cover; Bottom at sack cleaner, tornado dust collector, storing feed bin all is equipped with star-like unloading valve, the bottom of the star-like unloading valve of storing feed bin is equipped with duct type turnover panel sieve, be connected with tremie pipe at the feed opening of the star-like unloading valve of sack cleaner, tornado dust collector and the feed opening of duct type turnover panel sieve, the port of three sections tremie pipes crosses into a blanking port, is connected with the blanking flexible pipe at the blanking port; During discharging, with the corresponding joint aluminum oxide tank car of blanking flexible pipe, earlier the aluminum oxide tank car of the corresponding blanking flexible pipe dnockout pipe by dilute phase dnockout system is carried out the dilute phase dnockout one time, tank car is fanned the air or get in midair, to vacate a jar appearance, be used for receiving reclaimed materials, will all the other tank cars of good position be finished dnockout with dilute phase system on the discharge terminal one by one then; Open an aluminum oxide tank car up and down material pipe nearest tank car manhole plate corresponding with the blanking flexible pipe, connect a manhole gland at blanking flexible pipe port, by the manhole gland blanking flexible pipe is crimped onto (each tank car has 4 manholes usually) on this manhole; The gather dust sealing cover of rapid-acting coupling of the negative pressure of intending carrying out the corresponding tank car negative pressure pipe network arm of suction operation and the negative pressure pipe network arm adjacent with this arm is opened, in the rapid-acting coupling of two negative pressure pipe network arms, all connect the wear-resisting flexible pipe of suction, on the port of two wear-resisting flexible pipes of suction, connect clout respectively and reclaim suction nozzle and alumina recovery material mouth; Open Roots vaccum pump, open all star-like unloading valves, under the workman to jar in the hand-held wear-resisting pipe of suction and clout reclaim suction nozzle the aluminum oxide under aluminum oxide in the jar and the bottom fluidization bed blotted only, simultaneously by the workman with alumina recovery material mouth with around the tank car, aluminum oxide dust blots only about the discharge terminal; With suction limit suction simultaneously, the limit is discharged to the sucking-off material in the aluminum oxide tank car of the reception reclaimed materials corresponding with the blanking flexible pipe by the negative pressure dust collecting system, and the sandstone foreign material are isolated by duct type turnover panel sieve and entered the sandstone packaging tray; With inside and outside the aluminum oxide tank car, up and down clean out after, the wear-resisting flexible pipe of suction that clout is reclaimed suction nozzle and alumina recovery material mouth and be attached thereto is received in next rapid-acting coupling of intending cleaning tank car correspondence, seals with sealing cover handling clean tank car rapid-acting coupling; Treat that all tank cars all finish the dilute phase dnockout, and after all finishing the suction operation, with the blanking flexible pipe with remove from the tank car manhole that receives reclaimed materials with the manhole gland that is connected down, close the tank car manhole, close all star-like unloading valves; The tank car that rewinding is regained in butt joint carries out the dilute phase dnockout one time, then butt joint regain the tank car of rewinding inside and outside, carry out the suction operation up and down, reclaimed materials is stored in storing feed bin, tornado dust collector, the sack cleaner, close Roots vaccum pump at last, the site clearing, call empty wagons away, transfer in full car, carry out next operation cycle.
Aluminum oxide discharge terminal of the present invention reclaims clout and dust arrester installation (negative pressure dust collecting system) comprises Roots vaccum pump, the storing feed bin, tornado dust collector, sack cleaner, it is characterized in that: Roots vaccum pump and sack cleaner, tornado dust collector, the storing feed bin is connected in proper order with wear-resisting pipe connecting, be connected with the negative pressure person in charge's net that gathers dust at the storing feed bin, negative pressure is gathered dust and is responsible for net and lays layout along discharge terminal railway direction, gather dust to be responsible in negative pressure and establish a negative pressure pipe network arm corresponding to each jar of tank car position on the net, each negative pressure pipe network props up the rapid-acting coupling of gathering dust of negative pressure of pipe coupling, and the negative pressure rapid-acting coupling of gathering dust seals with sealing cover; Bottom at sack cleaner, tornado dust collector, storing feed bin all is equipped with star-like unloading valve, the bottom of the star-like unloading valve of storing feed bin is equipped with duct type turnover panel sieve, be connected with tremie pipe at the feed opening of the star-like unloading valve of sack cleaner, tornado dust collector and the feed opening of duct type turnover panel sieve, the port of three sections tremie pipes crosses into a blanking port, is connected with the blanking flexible pipe at the blanking port.
Effect of the present invention and advantage are:
1, flow process is short, realizes reclaiming on the spot, on the spot dnockout.
Can find out pipe rapid-acting coupling of gathering dust of the corresponding design in each jar position from accompanying drawing 1, the time spent does not seal with sealing cover this joint, be in sealed state, open sealing cover when in the jar of corresponding tank car jar of outer and aluminum oxide discharge terminal is cleared up up and down and connect flexible pipe and material sucking mouth with rapid-acting coupling, carry out the suction operation; The sucking-off material is transported to the storing feed bin by the negative pressure pipe network, in the design of discharge terminal middle position storing feed bin, cyclonic separator, sack cleaner are arranged, storing feed bin, cyclonic separator, sack cleaner are installed on the discharge terminal dnockout platform middle position, with the tank car design discrepancy in elevation is arranged, utilize this discrepancy in elevation that the aluminum oxide that reclaims directly is put into and fan the air or the empty railway aluminum oxide of half-dozen tank car, by aluminum oxide discharge terminal dilute phase system the aluminum oxide that reclaims is got to the aluminum oxide warehouse.This design is avoided railway aluminum oxide tank car secondary, is shunt for three times, saves dispatch charge usefulness, reduces railway aluminum oxide tank car and accounts for the car time, saves and accounts for fare usefulness, improves the tank car utilising efficiency; Avoid artificial secondary pack; Avoid the secondary transportation; Avoid secondary manually to prick material; Save trouble, save time, laborsaving.
2, power is big, and the efficient height greatly improves the worker laboring environment, reduces labour intensity.
Special discrepancy in elevation design, rewinding pipe are last, and tank car and rewinding point occupy a commanding position down, reduce the carrying of pipeline level and upwards carrying, greatly reduce labor strength; The employing negative pressure is gathered dust, and helps to improve a jar interior Working environment especially; High-power design, suction speed is fast, and the efficient height has reduced the activity duration in workman's jar, has greatly reduced labor strength.
3, realized reclaiming the ON-LINE SEPARATION of dirty material, the efficient height.
The aluminum oxide pipeline formula reprint screening plant of particular design is realized ON-LINE SEPARATION.Land aluminum oxide through after the system recoveries with what the common tank car impure aluminum oxide in bottom and discharge terminal reclaimed up and down, cut the aluminum oxide pipeline formula reprint screening plant of installing by the feed bin bottom material back at the storing feed bin the dirty material of macrobead and foreign material are realized ON-LINE SEPARATION, realize the removal of impurities function.
4, take full advantage of aluminum oxide discharge terminal resource, reduced investment.
The negative pressure pipe network that gathers dust lays along discharge terminal, saves timbering cost and uses; Utilize aluminum oxide discharge terminal pressurized air to make fly-ash separator blowback wind regime, saved the investment of blowback wind air compressor machine; Utilize the aluminum oxide dilute phase system directly to handle the aluminum oxide of recovery, gather materials on the spot, saved secondary dnockout equipment and investment.
Four, description of drawings
Fig. 1. be negative pressure recovery of the present invention, separation, dnockout system diagram.Fig. 2. be the side-view of Fig. 1.Fig. 3. be that negative pressure recovery pipe network is set up and the rapid-acting coupling synoptic diagram.Fig. 4. be aluminum oxide pipeline formula turnover panel screening plant external view.Fig. 5. be the internal view of Fig. 4.Fig. 6. be that the K of Fig. 5 is to view.Fig. 7. be the structural representation that aluminum oxide discharge terminal of the present invention reclaims clout and dust arrester installation.
Among the figure: 1. storing feed bin; 2. wear-resisting pipe connecting; 3. cyclonic separator; 4. sack cleaner; 5. electromagnetic impulse valve; 6. external compressed air; 7. sack cleaner clean room sealing cover; 8. pulse manipulator; 9. negative pressure indicator; 10. safety valve; 11. line strainer; 12. the rainproof chamber of equipment; 13. vacuum table; 14. yielding rubber pad; 15. intake silencer; 16. vacuum valve; 17. safety valve; 18. rubber absorbers; 19. Roots vaccum pump; 20. thermometer; 21. motor; 22. outlet secondary sound damper; 23. exit silencer; 24. sack cleaner level gage; 25. star-like unloading valve; 26. tremie pipe; 27. blanking flexible pipe; 28. the manhole gland hose connection with blanking; 29. tornado dust collector level gage; 30. star-like unloading valve; 31. storing silometer; 32. aluminum oxide pipeline formula turnover panel sieve; 33. star-like unloading valve; 34. sandstone foreign material discharge tube; Person in charge's net 35. negative pressure is gathered dust; 36. rapid-acting coupling (cloudy head); 37. rapid-acting coupling sealing cover; 38. rapid-acting coupling (sun head); 39. the wear-resisting flexible pipe of suction; 40. dilute phase dnockout pipe; 41. railway aluminum oxide tank car; 42. aluminum oxide discharge terminal framework; 43. clout reclaims suction nozzle; 44. sandstone packaging tray; 45. alumina recovery material mouth; 46 aluminum oxide feed bins; 47. check fast perforate; 48. aluminum oxide pipeline formula turnover panel sieves left halfbody; 49. turnover panel lever; 50. turnover panel sieve opening for feed; 51. aluminum oxide pipeline formula turnover panel sieves right halfbody; 52. turnover panel handle; 53. bolt; 54. first nut; 55. first packing ring; 56. sieve sheet; 57. split pin; 58. second nut; 59. second packing ring; 60. rotating plate shaft; The mouth 61. gather dust; 62. centralized-control box; 63. steel base.
Five, embodiment
The invention provides a kind of aluminium commercial alumina discharge terminal alumina recovery, collecting method and device, below is that example is set forth its innovative thinking, design details and embodiment from several importances with the aluminum oxide discharge terminal of 14 jar positions:
1, general thought and structural arrangement
See accompanying drawing 1 and Fig. 2: the invention provides a kind of aluminium commercial alumina discharge terminal alumina recovery, collecting method and device, adopt the negative pressure dust collecting system;
General thought is: realize reclaiming on the spot, on the spot dnockout;
● fixed design, primary device are installed on the discharge terminal central authorities dnockout platform;
● negative pressure power is produced by Roots vaccum pump, lays the negative pressure pipe network that gathers dust along the aluminum oxide discharge terminal, the rapid-acting coupling of gathering dust of corresponding tank car position design negative pressure, this joint the time spent with the lid sealing;
● elder generation carries out the dilute phase dnockout earlier one time with the aluminum oxide tank car of the blanking mouth of pipe in the corresponding diagram 1 during dnockout, gets half jar of material and gets final product, and this main purpose is to vacate the part jar to hold.Receive on the nearest manhole of this tank car with the blanking flexible pipe with the hose connection manhole gland of blanking then.To good position tank car be finished dnockout with dilute phase system on the discharge terminal one by one then.Inside and outside having made tank car, carry out the manual recovery operation simultaneously, to around the aluminum oxide discharge terminal, the operation of gathering dust up and down;
● reclaiming aluminum oxide is to be connected wear-resisting flexible pipe with suction nozzle with the dust suction operation, by wear-resisting hose connection rapid-acting coupling (sun head), earlier negative pressure pipe network rapid-acting coupling (cloudy head) lid is opened during use, rapid-acting coupling negative and positive head connects, open vaccum pump unit, under the workman to jar in a hand-held suction nozzle aluminum oxide in the jar (comprising the aluminum oxide under the bottom fluidization bed) is blotted only, same manner is with around the tank car, aluminum oxide dust blots only about the discharge terminal;
● the operation of gathering dust, the sucking-off material cuts material, tornado dust collector separation, sack cleaner separation through the negative pressure pipe network to the storing feed bin, carries out three grades of separation;
● be respectively equipped with star-like unloading valve under storing feed bin, tornado dust collector, the sack cleaner hopper, realize on-line continuous suction, continuous discharge;
● at the aluminum oxide (containing a small amount of sand and impurity) of storing feed bin, be put back into the railway aluminum oxide tank car that soars through turnover panel sieve screening aluminum oxide, the sandstone that sieve out and foreign material are put in the sandstone packaging tray by pipeline, and fork truck is pitched away and poured into the Refuse bin;
● the aluminum oxide that tornado dust collector, sack cleaner separate directly is put into the railway aluminum oxide tank car that soars by pipeline;
● after 14 aluminum oxide tank cars have all been broken material (the corresponding tank car that reclaims aluminum oxide can be half jar), to inside and outside all the other the aluminum oxide tank cars of the tank car that reclaims aluminum oxide, suction finishes about the discharge terminal, remove blanking flexible pipe and manhole gland, build the tank car manhole, the aluminum oxide that is recovered to the aluminum oxide tank car is got to the aluminum oxide feed bin by aluminum oxide discharge terminal dilute phase system.After this jar beaten, utilize the negative pressure dust collecting system to inside and outside this jar, discharge terminal carries out a suction operation up and down again, material is stored in the dust collecting system.Call empty wagons this moment away, transfers in fully loaded car, carries out next working cycle.
2, negative pressure system design
● system's negative pressure is produced by vacuum pump; Vacuum pump adopts the cloverleaf Roots vaccum pump, motor drive, and power of motor is selected 55KW; The distinguishing feature of this vacuum pump is that volume is little, and big flow, flow rate fluctuation are little, and noise is low, and it is reliable to operate steadily.Design maximum vacuum 50KPa, the anti-negative pressure of design such as system pipeline, storing feed bin, tornado dust collector, sack cleaner is greater than 100KPa;
● vaccum pump unit is installed on the discharge terminal central authorities dnockout platform by cushion blocking, indoor installation; Rubber absorbers, sound damper are installed in the vacuum pump import; Vacuum pump outlet is installed rubber absorbers, sound damper;
● 200 meters of the about length of the aluminum oxide discharge terminal of 14 jar positions, the negative pressure pipe network lays along aluminum oxide discharge terminal two-layer platform, lays from the mediad both sides; 120 meters of design maximum delivery distances; Main line is selected diameter 150mm wear-resistant ceramic lined steel pipe for use.Bye-pass selects diameter 108mm wear resistance ceramic tube.Bye-pass rapid-acting coupling and sealing cover all select diameter 108mm; Each the branch road dust suction simultaneously operation of design vacuum pump both sides, i.e. system design two branch road operations simultaneously, other branch road requires sealing;
● negative pressure pipe network master loop radius of turn is greater than 3 meters, and the bye-pass radius of turn is greater than 2 meters, and bye-pass is connected the employing welding with main line, and bye-pass flow direction of material and main line flow direction of material connection angle are less than and equal 14 °, and flow direction of material is downbeam; Arm is drawn from top or the side top be responsible for;
● the flexible pipe intended diameter of gathering dust 108mm, 18 meters of design lengths; Design environment for use temperature-40 °～+ 60 °;
● each pipe end screw socket connects a stainless steel rapid-acting coupling (cloudy head), and the time spent is not used the supporting stainless steel cover sealing of rapid-acting coupling, and the time spent is opened stainless steel cover, and the butt joint of negative and positive head is carried out in the stainless steel rapid-acting coupling (sun head) that connects wear-resisting flexible pipe with an end.
3, feed separation design
● feed separation is designed to three grades, is respectively linear separation, centrifugation, sack cleaner filtration;
● linear separation: be to realize cutting material by the storing feed bin, after the operation sucking-off aluminum oxide that gathers dust is transported to the import of storing feed bin through material sucking mouth suction, negative pressure pipe network, be far longer than the area of opening for feed because of the feed bin sectional area, a large amount of materials are impure, sandstone material sedimentation rapidly herein particularly, realizes the separation of the material first step.This design advantage is simple, unpowered parts, efficient height.The key of this design is position and the direction design of opening for feed and the discharge port of storing feed bin as shown in Figure 1, can obtain best material effect of settling.Storing feed bin design volume 5m
3
● centrifugation: tornado dust collector are adopted in centrifugation, and tornado dust collector are made up of cylindrical shell, cone, inlet pipe, air outlet tube and ash releasing tube etc.The working process of tornado dust collector is that air-flow will become circumferential motion by translational motion when dusty gas enters cyclonic separator by the tangential admission mouth.The overwhelming majority of swirling eddy is downward, mobile towards cone twist from cylinder along wall, claims that usually this is outer rotational gas flow.Dusty gas produces centrifugal force in rotary course, the grit of relative density greater than gas got rid of to wall.Grit is in case contact with wall, just loses mass force radially and momentum under relying on and downward gravity fall along wall, enters ash releasing tube.When the outward turning gas that rotation descends arrives cone, because conical contraction is drawn close to the center.According to " spin moment " invariance principle, its tangential velocity improves constantly, and the suffered centrifugal force of grit is also constantly strengthened.When air-flow arrives a certain position, cone lower end, namely with same sense of rotation from the cyclonic separator middle part, by on the counter steer down, continue spinning property and flow, namely in rotational gas flow.Final purification gas is outside the vapor pipe vent pipe, and the grit of a part of collection at large is also discharged thus.Adopt the advantage of tornado dust collector design to be, cyclone separator structure is simple, volume compact, and separation efficiency is higher, movement-less part, volume is little, in light weight;
Before sack cleaner, install tornado dust collector additional, can alleviate the working load of sack cleaner greatly, reduce the filtration area of fly-ash separator, the safeguards system reliability service;
● sack cleaner filters, and dusty gas enters ash bucket, filter bag chamber by the fly-ash separator inlet mouth, and dusty gas is filtered into pure qi (oxygen) through filter bag and enters air-purifying chamber, through the air-purifying chamber venting port, is taken away by vacuum pump again.Filter bag is selected 500g/m for use
2Terylene overlay film needled filtering felt, good waterproof performance.The long-pending outside surface that is attached to filter bag of dust, and constantly increase, the resistance of bag dust collector is constantly risen, need regularly deashing; Deashing is by pulse manipulator timing sequential firing electromagnetic impulse valve, use the existing pressurized air (0.5 ~ 0.7MPa) of discharge terminal, induce the ambient air (title secondary air) that is several times as much as a wind by Venturi meter by winding-up pore eye ejection (claiming a time wind), entering filter bag makes filter bag sharply expand in moment, and dust is shaken off in the opposite direction effect that is accompanied by air-flow, the dust that invests the bag table hightails filter bag and falls into ash bucket (or grey storehouse), and dust is discharged by star-like unloading valve, reaches the purpose of deashing.Electromagnetic impulse valve (also claiming diaphragm valve) is the pressurized air " switch " of pulse bag type dust collector deashing injection system.Be subjected to the control of pulse control instrument output signal, regularly to filter bag jetting deashing by row, dust remover resistance remained within the scope of setting, to guarantee processing power and the efficient of fly-ash separator.
4, blowing and screening system design
● by three grades of aluminum oxide that separate recovery, be stored in the bottom of storing feed bin, tornado dust collector, sack cleaner respectively; Each design of bottom has an electronic star-like unloading valve, controls electronic star-like unloading valve and carries out blowing and close material;
● wherein storing feed bin bottom material contains small amounts of sandstone and impurity, has therefore designed sorting turnover panel sieve.Sieve aperture 6 * 6mm, minus mesh is for reclaiming aluminum oxide and a small amount of fine sand, and unloads discharging from the electronic star-like unloading valve in the bottom of tornado dust collector, sack cleaner and converges in the pipeline, receives by flexible pipe on the manhole of aluminum oxide tank car;
● oversize is macrobead sandstone and foreign material, is put into sandstone packaging tray under the discharge terminal by pipeline, outwells;
● the flexible pipe head design has a platen, and size is with tank car manhole outer, by weight with adhere to the rubber cushion realization and be connected and seal;
● another manhole of tank car is opened, and the discharging cover that leaks informaton that gathers dust is installed, and builds the pressure when preventing the tank car discharging.Gathering dust leaks informaton is covered with platen of meter, and 500g/m is installed
2Terylene overlay film needled filtering felt is made filter bag, is crimped on the tank car manhole by weight.
5, the wear-resisting design of system
● system's dust suction and recovery mainly be aluminum oxide, abrasive property is extremely strong, system's each parts of negative pressure loop all will be considered enough wear resistances;
● suction nozzle adopts stainless steel; Stainless steel is adopted in rapid-acting coupling;
● the suction flexible pipe adopts polyurethane tape muscle flexible pipe;
● main line is selected the wear-resistant ceramic lined steel pipe for use;
● storing feed bin ingress elbow will have the wear-resistant ceramic of reinforcement liner;
● storing feed bin, tornado dust collector all adopt the wear-resistant ceramic liner.
6, system's control and safety, protection design
● (62) one of system design centralized-control boxes, panel display power supply, system's negative pressure value; Vacuum pump start button, stop button are arranged, and three star-like unloading valves start, stop button;
● vacuum pump, the design of star-like unloading valve have short-circuit protection, overload protection;
● the high protection of system design negative pressure, system's negative pressure opens the safety-valve automatically when surpassing 60KPa and protects;
● vacuum pump is imported and exported and is all designed sound damper, and vacuum pump and sound damper are installed in indoor;
● if the aluminum oxide discharge terminal does not have pile on every side, and the lightning rod lightning proof is considered in design.
7, the erection sequence of alumina recovery, dust arrester installation and inspection method
Below will assemble from factory, on-the-spot install, each link of production operation sets forth its concrete step of implementing:
The present invention should finish negative pressure power section, storing feed bin (1), cyclonic separator (3), sack cleaner (4), aluminum oxide pipeline formula turnover panel sieve (32) factory and make before assembling negative pressure dust collecting system.Arrive the on-the-spot installation of aluminum oxide discharge terminal (42) then;
Negative pressure power section erection sequence is: install Roots vaccum pump (19) and motor (21) at steel base (63), (19) with (21) by to the wheel be connected, import and export connection rubber absorbers (18) at Roots vaccum pump (19), connect exit silencer (23) and outlet secondary sound damper (22) in outlet rubber absorbers (18) back, at the preceding installation intake silencers of entrance rubber absorbers (18) (15), at Roots vaccum pump (19) thermometer (20) is installed, vacuum meter (16) and safety valve (17) are installed between the preceding installation intake silencers of entrance rubber absorbers (18) (15);
The erection sequence of aluminum oxide pipeline formula turnover panel sieve (32) is: make aluminum oxide pipeline formula turnover panel and sieve left halfbody (48), the fast perforate of installation check (47) on it, turnover panel sieve opening for feed (50), the hole of gathering dust (61), make aluminum oxide pipeline formula turnover panel again and sieve right halfbody (51) and sieve sheet (56), right by rotating plate shaft (60) bolt (53) first nuts (54) first packing rings (55) and split pin (57) second nuts (58) second packing rings (59) group, turnover panel lever (49) and turnover panel handle (52) is installed at last;
The aluminum oxide discharge terminal on-the-spot earlier with crane with factory make assemble, storing feed bin, cyclonic separator, sack cleaner, aluminum oxide pipeline formula turnover panel sieve handling one by one to aluminum oxide discharge terminal top layer platform, the negative pressure power section is installed on the platform by yielding rubber (14), the rainproof chamber of enclosing cover equipment (12).Storing feed bin (1), cyclonic separator (3), sack cleaner (4) is fixed on aluminum oxide discharge terminal (42) the top layer platform, be connected and installed by wear-resisting pipe connecting (2), star-like unloading valve (25) (30) (33) is installed, sack cleaner level gage (24) is installed, tornado dust collector level gage (29), storing silometer (31), sack cleaner (4) is gone up electromagnetic impulse valve (5) external compressed air (6) and sack cleaner clean room sealing cover (7) pulse manipulator (8) negative pressure indicator (9) is installed, safety valve (10) and line strainer (11) vacuum table (13) are installed on the wear-resisting pipe connecting (2) between sack cleaner sealing cover (7) and the intake silencer (15) successively, and gather dust mouthful (61) of aluminum oxide pipeline formula turnover panel sieve connect with steel tube with sack cleaner (4) bottom;
The negative pressure pipe network erection sequence of gathering dust is: the ceramic wear-resisting steel pipe is welded to form negative pressure one by one along discharge terminal framework (42) gathers dust and be responsible for net (35), weld place's arm and make it to gather dust with negative pressure every 15M and be responsible for net (35) and link to each other, prop up pipe end and connect rapid-acting coupling (cloudy 36) and rapid-acting coupling sealing cover (37), (39) one of suction flexible pipes linked to each other with clout recovery suction nozzle (43), alumina recovery material mouth (45) when this branch road used, one links to each other with rapid-acting coupling (sun 38), and rapid-acting coupling (sun 38) and rapid-acting coupling (the moon 36) link to each other;
Blanking, screening erection sequence are: star-like unloading valve (25) (30) directly is connected with tremie pipe (26), star-like unloading valve (33) is connected with aluminum oxide pipeline formula turnover panel sieve (32), the minus mesh of aluminum oxide pipeline formula turnover panel sieve (32) is connected with tremie pipe (26), oversize with enter sandstone packaging tray (44) after sandstone foreign material discharge tube (34) is connected.Tremie pipe (26) gathers back and blanking flexible pipe (27) and is connected with the hose connection manhole gland (28) of blanking;
The dnockout order of connection is: railway aluminum oxide tank car (41) links to each other with dilute phase dnockout pipe (40) and is transported to aluminum oxide feed bin (46);
After finishing, system assembles to carry out leak test, the concrete practice is: check that all negative pressure pipe network arm rapid-acting coupling sealing cover (37) sealings are intact, go up starter motor (21) Roots vaccum pump (19) at centralized-control box (62), observe vacuum table (13), raise and safety valve (10) action is leaked informaton as negative pressure value in 2-3 minute, the illustrative system good seal possesses working conditions.
8, the technological operation of alumina recovery, dust arrester installation and using method
Complete process operation of alumina recovery, dust arrester installation mainly contains dnockout, adapter, start, suction, discharge, tears pipe, dnockout link open, the operation of 14 aluminum oxide tank cars of good position is sketched it with a discharge terminal and operates using method:
The first step: dnockout;
Aluminum oxide tank car with corresponding tremie pipe (26) carries out the dilute phase dnockout one time by dilute phase dnockout pipe (40) earlier, gets half jar of material and gets final product, and this main purpose is to vacate the part jar to hold.To all the other 13 tank cars of good position be finished dnockout with dilute phase system (40) on the discharge terminal one by one then.
Second step: take over; This step can carry out synchronously with other 13 tank car dilute phase system dnockouts.
Tremie pipe is taken over: open and beaten a nearest tank car manhole plate of half jar of batch can car and tremie pipe, receive (each tank car has 4 manholes usually) on this manhole with the blanking flexible pipe with the hose connection manhole gland (28) of blanking by crimping.
Material sucking pipes is taken over: be to connect a wear-resisting flexible pipe of suction (39) respectively with suction nozzle (43), (45), by wear-resisting hose connection rapid-acting coupling (sun head) (38), open intending carrying out the negative pressure pipe network arm of the corresponding tank car of suction operation and rapid-acting coupling (the 36 cloudy head) lid of the negative pressure pipe network arm adjacent with this arm, rapid-acting coupling negative and positive head (38) connects.
The 3rd step: start; Open Roots vaccum pump (19) at centralized-control box (62), observe vacuum table (13), open star-like unloading valve (25), (30), (33).
The 4th step: under the workman to jar in hand-held wear-resisting material sucking pipes and suction nozzle aluminum oxide in the jar (comprising the aluminum oxide under the bottom fluidization bed) is blotted only, and with around the tank car, aluminum oxide dust blots only about the discharge terminal.
The 5th step: discharge; This and suction are carried out simultaneously, the limit suction, and the limit is by the negative pressure dust collecting system, and the sucking-off material is discharged to aluminum oxide tank car (41) lining of the reception reclaimed materials corresponding with the blanking flexible pipe, and the sandstone foreign material are isolated by duct type turnover panel sieve (32) and are entered sandstone packaging tray (44).
The 6th step: tear pipe open;
Aluminum oxide tank car is inside and outside, clean out up and down after, with suction nozzle (43), (45) and connect the wear-resisting flexible pipe of suction (39) and receive next and intend the corresponding rapid-acting coupling of cleaning tank car, will handle clean tank car rapid-acting coupling with sealing cover (37) sealing.
Treat that 13 tank cars all finish the dilute phase dnockout, and after all finishing the suction operation, remove from the tank car manhole with the blanking flexible pipe with the hose connection manhole gland (28) of blanking, close the tank car manhole, close star-like unloading valve (25), (30), (33).
The 7th step: dnockout; The tank car that rewinding is regained in butt joint carries out the dilute phase dnockout one time.
The 8th step: suction; Butt joint regain the tank car of rewinding inside and outside, carry out the suction operation up and down, reclaimed materials is stored in the storing feed bin (1).
The 9th step: shutdown; Close Roots vaccum pump (19), the site clearing is called empty wagons away, transfers in full car, carries out next operation cycle.
Claims (2)
1. an aluminum oxide discharge terminal reclaims clout and collecting method, it is characterized in that: at aluminum oxide discharge terminal central authorities dnockout platform one cover negative pressure dust collecting system is installed, the negative pressure dust collecting system comprises Roots vaccum pump, the storing feed bin, tornado dust collector, sack cleaner, Roots vaccum pump and sack cleaner, tornado dust collector, the storing feed bin is connected in proper order with wear-resisting pipe connecting, be connected with the negative pressure person in charge's net that gathers dust at the storing feed bin, negative pressure is gathered dust and is responsible for net and lays layout along discharge terminal railway direction, gather dust to be responsible in negative pressure and establish a negative pressure pipe network arm corresponding to each jar of tank car position on the net, each negative pressure pipe network props up the rapid-acting coupling of gathering dust of negative pressure of pipe coupling, and the negative pressure rapid-acting coupling of gathering dust seals with sealing cover; Bottom at sack cleaner, tornado dust collector, storing feed bin all is equipped with star-like unloading valve, the bottom of the star-like unloading valve of storing feed bin is equipped with duct type turnover panel sieve, be connected with tremie pipe at the feed opening of the star-like unloading valve of sack cleaner, tornado dust collector and the feed opening of duct type turnover panel sieve, the port of three sections tremie pipes crosses into a blanking port, is connected with the blanking flexible pipe at the blanking port; During discharging, with the corresponding joint aluminum oxide tank car of blanking flexible pipe, earlier the aluminum oxide tank car of the corresponding blanking flexible pipe dnockout pipe by dilute phase dnockout system is carried out the dilute phase dnockout one time, tank car is fanned the air or get in midair, to vacate a jar appearance, be used for receiving reclaimed materials, will all the other tank cars of good position be finished dnockout with dilute phase system on the discharge terminal one by one then; Open an aluminum oxide tank car up and down material pipe nearest tank car manhole plate corresponding with the blanking flexible pipe, connect a manhole gland at blanking flexible pipe port, by the manhole gland blanking flexible pipe is crimped onto on this manhole; The gather dust sealing cover of rapid-acting coupling of the negative pressure of intending carrying out the corresponding tank car negative pressure pipe network arm of suction operation and the negative pressure pipe network arm adjacent with this arm is opened, in the rapid-acting coupling of two negative pressure pipe network arms, all connect the wear-resisting flexible pipe of suction, on the port of two wear-resisting flexible pipes of suction, connect clout respectively and reclaim suction nozzle and alumina recovery material mouth; Open Roots vaccum pump, open all star-like unloading valves, under the workman to jar in the hand-held wear-resisting pipe of suction and clout reclaim suction nozzle the aluminum oxide under aluminum oxide in the jar and the bottom fluidization bed blotted only, simultaneously by the workman with alumina recovery material mouth with around the tank car, aluminum oxide dust blots only about the discharge terminal; With suction limit suction simultaneously, the limit is discharged to the sucking-off material in the aluminum oxide tank car of the reception reclaimed materials corresponding with the blanking flexible pipe by the negative pressure dust collecting system, and the sandstone foreign material are isolated by duct type turnover panel sieve and entered the sandstone packaging tray; With inside and outside the aluminum oxide tank car, up and down clean out after, the wear-resisting flexible pipe of suction that clout is reclaimed suction nozzle and alumina recovery material mouth and be attached thereto is received in next rapid-acting coupling of intending cleaning tank car correspondence, seals with sealing cover handling clean tank car rapid-acting coupling; Treat that all tank cars all finish the dilute phase dnockout, and after all finishing the suction operation, blanking flexible pipe and the manhole gland that is attached thereto are removed from the tank car manhole that receives reclaimed materials, close the tank car manhole, close all star-like unloading valves; The tank car that rewinding is regained in butt joint carries out the dilute phase dnockout one time, then butt joint regain the tank car of rewinding inside and outside, carry out the suction operation up and down, reclaimed materials is stored in storing feed bin, tornado dust collector, the sack cleaner, close Roots vaccum pump at last, the site clearing, call empty wagons away, transfer in full car, carry out next operation cycle; The erection sequence of described duct type turnover panel sieve is: make the duct type turnover panel and sieve left halfbody, the fast perforate of installation check on it, turnover panel sieve opening for feed, the hole of gathering dust, make the duct type turnover panel again and sieve right halfbody and sieve sheet, by rotating plate shaft, bolt, first nut, first packing ring, and split pin, second nut, second washer sets right, turnover panel lever and turnover panel handle is installed at last.
2. an aluminum oxide discharge terminal according to claim 1 reclaims the aluminum oxide discharge terminal that uses in clout and the collecting method and reclaims clout and dust arrester installation, comprise Roots vaccum pump, the storing feed bin, tornado dust collector, sack cleaner, it is characterized in that: Roots vaccum pump and sack cleaner, tornado dust collector, the storing feed bin is connected in proper order with wear-resisting pipe connecting, be connected with the negative pressure person in charge's net that gathers dust at the storing feed bin, negative pressure is gathered dust and is responsible for net and lays layout along discharge terminal railway direction, gather dust to be responsible in negative pressure and establish a negative pressure pipe network arm corresponding to each jar of tank car position on the net, each negative pressure pipe network props up the rapid-acting coupling of gathering dust of negative pressure of pipe coupling, and the negative pressure rapid-acting coupling of gathering dust seals with sealing cover; Bottom at sack cleaner, tornado dust collector, storing feed bin all is equipped with star-like unloading valve, the bottom of the star-like unloading valve of storing feed bin is equipped with duct type turnover panel sieve, be connected with tremie pipe at the feed opening of the star-like unloading valve of sack cleaner, tornado dust collector and the feed opening of duct type turnover panel sieve, the port of three sections tremie pipes crosses into a blanking port, is connected with the blanking flexible pipe at the blanking port; The erection sequence of described duct type turnover panel sieve is: make the duct type turnover panel and sieve left halfbody, the fast perforate of installation check on it, turnover panel sieve opening for feed, the hole of gathering dust, make the duct type turnover panel again and sieve right halfbody and sieve sheet, by rotating plate shaft, bolt, first nut, first packing ring, and split pin, second nut, second washer sets right, turnover panel lever and turnover panel handle is installed at last.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110205538 CN102268696B (en) | 2011-07-15 | 2011-07-15 | Method and apparatus for recovery of remaining alumina and dust collection in alumina discharge station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110205538 CN102268696B (en) | 2011-07-15 | 2011-07-15 | Method and apparatus for recovery of remaining alumina and dust collection in alumina discharge station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102268696A CN102268696A (en) | 2011-12-07 |
| CN102268696B true CN102268696B (en) | 2013-08-14 |
Family
ID=45051143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110205538 Active CN102268696B (en) | 2011-07-15 | 2011-07-15 | Method and apparatus for recovery of remaining alumina and dust collection in alumina discharge station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102268696B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103658145A (en) * | 2012-09-18 | 2014-03-26 | 贵阳铝镁设计研究院有限公司 | Dust extraction and treatment system for discharging platform of aluminum oxide warehouse |
| CN103662126A (en) * | 2013-06-07 | 2014-03-26 | 山东舜合胶业有限公司 | Automatic intelligent packaging machine for producing rubber powder on basis of waste tires |
| CN104501553A (en) * | 2014-12-22 | 2015-04-08 | 遵义联谷农业科技有限公司 | Air drying and cooling device for organic fertilizer |
| CN105753028B (en) * | 2016-04-06 | 2017-04-05 | 沈阳鑫博工业技术股份有限公司 | A kind of volume formula blows powder device and its using method |
| CN107185346A (en) * | 2017-07-18 | 2017-09-22 | 广西百色银海铝业有限责任公司 | A kind of alumina powder collection device and alumina powder collecting device |
| CN110203703B (en) * | 2019-06-17 | 2024-02-06 | 广东海洋大学 | Vacuum continuous material sucking system and feeding method |
| CN113844910A (en) * | 2021-08-31 | 2021-12-28 | 中煤天津设计工程有限责任公司 | High-efficient collection device of train loading station dust |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007330875A (en) * | 2006-06-14 | 2007-12-27 | Sumitomo Metal Ind Ltd | Equipment and method for recovering dust |
| CN201136906Y (en) * | 2007-12-10 | 2008-10-22 | 中国铝业股份有限公司 | Filtration and impurity removal device of aluminum oxide conveying system |
| CN201432998Y (en) * | 2009-07-21 | 2010-03-31 | 重庆钢铁(集团)有限责任公司 | Tank car feeding device with dust removing mechanism |
| CN201530580U (en) * | 2009-06-16 | 2010-07-21 | 上海建工材料工程有限公司 | Underneath-type powder silo dust collecting device |
| CN202175726U (en) * | 2011-07-15 | 2012-03-28 | 傅文渊 | Device for recycling excess materials and collecting dust of aluminum oxide discharge station |
-
2011
- 2011-07-15 CN CN 201110205538 patent/CN102268696B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007330875A (en) * | 2006-06-14 | 2007-12-27 | Sumitomo Metal Ind Ltd | Equipment and method for recovering dust |
| CN201136906Y (en) * | 2007-12-10 | 2008-10-22 | 中国铝业股份有限公司 | Filtration and impurity removal device of aluminum oxide conveying system |
| CN201530580U (en) * | 2009-06-16 | 2010-07-21 | 上海建工材料工程有限公司 | Underneath-type powder silo dust collecting device |
| CN201432998Y (en) * | 2009-07-21 | 2010-03-31 | 重庆钢铁(集团)有限责任公司 | Tank car feeding device with dust removing mechanism |
| CN202175726U (en) * | 2011-07-15 | 2012-03-28 | 傅文渊 | Device for recycling excess materials and collecting dust of aluminum oxide discharge station |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102268696A (en) | 2011-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102268696B (en) | Method and apparatus for recovery of remaining alumina and dust collection in alumina discharge station | |
| CN202175726U (en) | Device for recycling excess materials and collecting dust of aluminum oxide discharge station | |
| CN200981771Y (en) | Blast furnace gas dust removal self-flowing tank car transportation device | |
| CN105126529A (en) | Method and device for inorganized emission flying dust pollution government | |
| CN101260322A (en) | Blast furnace gas dust removing device and technique by dry method | |
| CN103434844A (en) | Dual pressure feed transport system and transport method thereof | |
| CN201395269Y (en) | Semi-automatic unpacking unloading machine | |
| CN200974714Y (en) | Stone coal pneumatic suction system | |
| CN102304728B (en) | Aluminum oxide recycling and material jam treatment method of electrolytic aluminum flue gas purification system | |
| CN115253530B (en) | Dust recycling and conveying system | |
| CN201950028U (en) | Impurity-removing and warehouse-entering system for raw material | |
| CN208642173U (en) | Pneumatic suction car | |
| CN107520035B (en) | Sand processing and dust removing device and method | |
| CN205965330U (en) | Sack cleaner tail ash recovery unit | |
| CN210389673U (en) | Floor type powder bin dust removal system | |
| CN208450101U (en) | Pull-type vacuum intake cleaning plant | |
| CN206434958U (en) | A kind of gravitational precipitator and the powder tank centralized dust-removing system with it | |
| CN201997198U (en) | Pulse bag type dust remover | |
| CN111481101A (en) | Bag-sleeving and discharging high-pressure dust collector | |
| CN211756060U (en) | Storage tank that whirlwind separation removed dust | |
| CN210543843U (en) | Pre-spraying device of coke oven vehicle-mounted bag-type dust collector | |
| CN211189430U (en) | Converter catalyst cleaning device | |
| CN219816640U (en) | Cabin roof dust collector | |
| CN218024327U (en) | Press down dirt to retrieve removal loading hopper of unloading | |
| CN211687469U (en) | Solid slag storage and transportation device for thermal phase separation treatment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |