CN108820604B

CN108820604B - Spider-web type anti-blocking fluidization ash conveying method and system for dust remover

Info

Publication number: CN108820604B
Application number: CN201810390993.6A
Authority: CN
Inventors: 陈琛; 蒋彪; 王飞; 訚浩; 董艳苹
Original assignee: Capital Engineering & Research Inc Ltd
Current assignee: Capital Engineering & Research Inc Ltd
Priority date: 2018-04-27
Filing date: 2018-04-27
Publication date: 2023-09-15
Anticipated expiration: 2038-04-27
Also published as: CN108820604A

Abstract

The invention provides a spider-web type anti-blocking fluidization ash conveying method and system for a dust remover, comprising the following steps: the dust remover is provided with an ash bucket at the lower end, an ash outlet conduit is penetrated on the side wall of the ash bucket, and the outlet of the ash outlet conduit is connected with an ash conveying air supply pipe; the fluidizer is fixedly arranged at the lower end of the ash bucket, the fluidizer is positioned below the inlet of the ash outlet guide pipe, the inlet at the lower end of the fluidizer is connected with the fluidization air supply pipe, the upper end of the fluidizer is provided with a fluidization disc, and the fluidizer is communicated with the ash bucket through the fluidization disc. The invention can realize dense-phase pneumatic ash conveying by combining fluidization and ash conveying, solves the problem of continuous blockage of ash, and has reliable ash conveying and low cost.

Description

Spider-web type anti-blocking fluidization ash conveying method and system for dust remover

Technical Field

The invention relates to the technical field of blast furnace ash conveying engineering, in particular to a spider-web type anti-blocking fluidization ash conveying method and system for a dust remover.

Background

The blast furnace gas cloth bag dust removing system is a dust removing system which is parallel to the blast furnace system and is used for treating the blast furnace semi-clean gas led out from the furnace top so as to meet the dust content requirement of the subsequent process. The blast furnace gas bag Dust removal system comprises two nonstandard devices, namely a blast furnace gas bag Dust remover (Bag Filter Chamber, abbreviated as BFC, which is a pressure container) and a large ash Bin (Big Dust Bin, abbreviated as BDB, which is a non-pressure container), wherein the blast furnace gas bag Dust remover (BFC) is a pressure container with high manufacturing standard and strong universality, the existing blast furnace gas bag Dust remover (BFC) can be directly disassembled to send scrap iron for smelting after facing blast furnace transformation, the small-specification blast furnace gas bag Dust remover (BFC) is also eliminated after facing expansion of the blast furnace, so that resource waste is caused, and the large ash Bin (BDB) is an ash storage device which is close to the blast furnace gas bag Dust remover (BFC) in shape.

The furnace top tank equalizing gas recovery system of the blast furnace is an auxiliary system of a charging tank subsystem of the blast furnace system, and is used for filtering gas in a charging tank, namely collecting equalizing gas during charging the charging tank, and then carrying out dust removal recovery. The prior furnace top tank equalizing gas recovery system uses a cyclone dust collector and a gravity dust collector as dust collection equipment, and the prior furnace top tank equalizing gas recovery system uses a BFC-like bag dust collector, such as reconstruction, and has long construction period and high cost.

Pneumatic conveying can be classified into dilute phase pneumatic conveying and dense phase pneumatic conveying according to the proportion of solid particles to gas. The dilute phase pneumatic conveying is characterized in that the materials are uniformly distributed in the air flow of the pipeline, the concentration is low, the speed is high, as shown in the schematic diagram of the dilute phase pneumatic conveying in fig. 1, a large amount of carrier gas is needed, the operation cost is high, the flow speed is high, the scouring abrasion of the inner wall of the pipeline is high, a ceramic pipe or a wear-resistant pipe is needed to be arranged, and the construction investment cost is high. The dense phase pneumatic conveying is characterized in that a section of pipeline is filled with materials to form a bolt column shape, the flowing speed is low, the pipeline is little in abrasion, and the materials are conveyed through the pressure difference on two sides of the bolt column, as shown in a schematic diagram of the dense phase pneumatic conveying in FIG. 2, and the defect of dilute phase pneumatic conveying is avoided.

In the current blast furnace engineering construction projects, the dust remover directly discharges ash through an outlet, and most of the dust remover directly sweeps high-pressure nitrogen to carry out ash conveying, but the dust remover generates a dilute phase ash conveying phenomenon, a large amount of sweeping gas is needed, the operation cost is high, ash conveying cannot be realized under the condition of blockage, a vibrator is used for removing blockage to avoid blockage, but continuous blockage (namely continuous blockage exists in the middle part of blockage, and the bulk density is high), and the vibrator can generate a phenomenon of more porcelain and more solid, but can cause more serious blockage.

Disclosure of Invention

The invention aims to provide a spider-web type anti-blocking fluidization ash conveying system for a dust remover, which can realize dense-phase pneumatic ash conveying in a mode of combining fluidization and ash conveying, solves the problem of continuous blockage of ash, and is reliable in ash conveying and low in cost.

The invention further aims to provide a spider-web type anti-blocking fluidization ash conveying method for the dust remover, which can realize dense-phase pneumatic ash conveying in a manner of combining fluidization and ash conveying, solves the problem of continuous blockage of ash, and is reliable in ash conveying and low in cost.

The above object of the present invention can be achieved by the following technical solutions:

the invention provides a spider-web type anti-blocking fluidization ash conveying system for a dust remover, which comprises the following components: the dust remover is provided with an ash bucket at the lower end, an ash outlet conduit is penetrated on the side wall of the ash bucket, and the outlet of the ash outlet conduit is connected with an ash conveying air supply pipe; the fluidizer is fixedly arranged at the lower end of the ash bucket, the fluidizer is positioned below the inlet of the ash outlet guide pipe, the inlet at the lower end of the fluidizer is connected with the fluidization air supply pipe, the upper end of the fluidizer is provided with a fluidization disc, and the fluidizer is communicated with the ash bucket through the fluidization disc.

In a preferred embodiment, the inlet of the ash discharge conduit is provided with an ash collecting cover, and the outlet of the ash discharge conduit is connected with the ash conveying and supplying pipe in an inclined mode at a preset included angle.

In a preferred embodiment, the outlet of the ash conveying air supply pipe is connected with the ash bin through an ash conveying main pipe, and ash entering the ash conveying air supply pipe from the ash hopper through the ash outlet pipe can be gathered into the ash bin through the ash conveying main pipe under the action of ash conveying gas in the ash conveying air supply pipe.

In a preferred embodiment, the fluidizer comprises a body and a diversion tower, the detachable seal of the diversion tower is arranged below the body, the upper end of the body is sealed and covered with the fluidization disc, the outlet end of the fluidization air supply pipe stretches into the diversion tower, and the fluidization gas entering the diversion tower through the fluidization air supply pipe can enter the ash bucket through the fluidization disc.

In a preferred embodiment, the fluidization plate comprises a plate body and a plurality of warp fluidization pipes, a plurality of warp fluidization grooves are formed in the plate body, one warp fluidization pipe is embedded in each warp fluidization groove in a sealing mode, a plurality of air inlet grooves are formed in the lower side wall of each warp fluidization pipe protruding out of the lower surface of the plate body, and a plurality of air outlet holes are formed in the upper side wall of each warp fluidization pipe protruding out of the upper surface of the plate body at intervals.

In a preferred embodiment, the fluidization disc is fixedly provided with a plurality of latitudinal fluidization annular pipes, the latitudinal fluidization annular pipes are concentric and are radially arranged at intervals, the latitudinal fluidization annular pipes are hermetically penetrated in the longitudinal fluidization pipes, the lower side wall of the latitudinal fluidization annular pipe positioned in the longitudinal fluidization pipes is provided with an air inlet hole, and the upper side wall of the latitudinal fluidization annular pipe positioned outside the longitudinal fluidization pipes is provided with a plurality of air exhaust holes at intervals.

In a preferred embodiment, the nominal diameter of the warp direction fluidization tube is greater than the nominal diameter of the weft direction fluidization loop, and the nominal diameter of the warp direction fluidization tube is greater than the width of the warp grooves of the tray body.

In a preferred embodiment, an upper flange is arranged at the opening at the lower end of the body, a lower flange is arranged at the opening at the upper end of the diversion tower, and the body is connected with the diversion tower in a sealing manner through the upper flange and the lower flange.

In a preferred embodiment, the outlet end of the fluidization air supply pipe is radially and outwardly divergently provided with a plurality of branch fluidization pipes, the outlet ends of the plurality of branch fluidization pipes are circumferentially and equally spaced, and the outlet end of the fluidization air supply pipe and the outlet end of each branch fluidization pipe are respectively provided with a fluidization spray head.

In a preferred embodiment, the spider-web type anti-blocking fluidization ash conveying system for the dust remover further comprises a nitrogen gun, wherein the nitrogen gun comprises a nitrogen tank and a plurality of injection pipes, the injection pipes are arranged on the fluidizer in a penetrating mode at intervals along the circumferential direction, an inlet of each injection pipe is connected with the nitrogen tank, and an outlet of each injection pipe penetrates out of the fluidizer and is provided with a torrent injector.

In a preferred embodiment, the torrent injector comprises an outer pipe and an inner pipe, the inner pipe can move up and down and is arranged in the outer pipe in a penetrating manner, a first upper inner annular plate and a second upper inner annular plate are arranged at the upper end of the inner wall of the outer pipe in a protruding manner at intervals, a lower inner annular plate is arranged at the lower end of the inner wall of the outer pipe in a protruding manner, an inner throat opening is arranged in the middle of the inner pipe, an upper outer annular plate is arranged at the upper end of the inner throat opening of the inner pipe in a protruding manner, a lower outer annular plate is arranged at the lower end of the inner throat opening of the inner pipe in a protruding manner, the upper outer annular plate is arranged between the first upper inner annular plate and the second upper inner annular plate, a gap is arranged between the upper outer annular plate and the inner wall of the outer pipe, and a gap is arranged between the lower outer annular plate and the inner wall of the outer pipe.

In a preferred embodiment, the lower outer ring plate of the inner tube is in sealing contact with the lower inner ring plate of the outer tube, and the upper outer ring plate of the inner tube is in sealing contact with the first upper inner ring plate of the outer tube, in a state where the pressure of the nitrogen gas in the injection tube reaches a calibrated value.

In a preferred embodiment, the side wall of the dust remover is provided with an upper limit ash level gauge and a lower limit ash level gauge at intervals from top to bottom, the lower limit ash level gauge is positioned above the inlet of the ash outlet conduit, the ash outlet conduit is provided with an ash outlet valve, the ash outlet conduit is provided with an ash outlet air supply valve, the fluidization air supply pipe is provided with a fluidization air supply valve, and the upper limit ash level gauge, the lower limit ash level gauge, the ash outlet valve, the ash outlet air supply valve and the fluidization air supply valve are all electrically connected with an industrial control computer.

In a preferred embodiment, the side wall of the dust remover is provided with a plurality of dust inlet pipes, and the upper end and the middle part of the dust hopper are respectively provided with a reinforcing rib.

In a preferred embodiment, the lower end of the side wall of the dust remover is provided with an air inlet, the upper end of the side wall of the dust remover is provided with an air outlet, a spiral guide plate is arranged in the dust remover corresponding to the air inlet, the middle part of the guide plate axially extends upwards to form a guide cylinder, the guide cylinder penetrates through a baffle plate in the dust remover, and a plurality of baffle plates are arranged above the baffle plate at intervals.

In a preferred embodiment, the ash transporting gas in the ash transporting gas supply pipe is clean gas, and the fluidizing gas in the fluidizing gas supply pipe is clean gas.

The invention also provides a spider-web type anti-blocking fluidization ash conveying method for the dust remover, wherein the spider-web type anti-blocking fluidization ash conveying method for the dust remover adopts the spider-web type anti-blocking fluidization ash conveying system for the dust remover, and the spider-web type anti-blocking fluidization ash conveying method for the dust remover comprises the following steps of: step a, a fluidization air supply valve on a fluidization air supply pipe is opened, and fluidization air enters the fluidizer and enters an ash bucket through a fluidization disc, so that ash in the ash bucket is in a fluidization suspension state; and b, enabling ash in a fluidized suspension state to enter an ash conveying and supplying pipe through an ash outlet pipe, and collecting the ash into an ash bin through an ash conveying main pipe under the action of ash conveying gas in the ash conveying and supplying pipe.

In a preferred embodiment, in the step a, after the fluidizing gas in the fluidizer enters the warp fluidization pipe through the air inlet groove of the warp fluidization pipe, a part of the fluidizing gas enters the ash bucket through the air outlet hole of the warp fluidization pipe, and another part of the fluidizing gas enters the weft fluidization loop pipe through the air inlet hole of the weft fluidization loop pipe and enters the ash bucket through the air outlet hole of the weft fluidization loop pipe.

In a preferred embodiment, the method further comprises a step a1 before the step a, starting a nitrogen gun, enabling nitrogen in a nitrogen tank to enter a torrent injector through an injection pipe, and scattering ash in an ash bucket of the dust remover through the torrent injector.

In a preferred embodiment, the ash level in the ash bucket is detected by an upper limit ash level meter and a lower limit ash level meter on the dust remover, the step a1 is started when the upper limit ash level meter of the dust remover alarms, and the ash outlet valve on the ash outlet pipe, the fluidization air supply valve on the fluidization air supply pipe and the ash conveying air supply valve on the ash conveying air supply pipe are sequentially closed when the lower limit ash level meter of the dust remover alarms.

In a preferred embodiment, in the step a1, when the pressure of the nitrogen entering the injection pipe reaches a standard value, the inner pipe of the torrent injector moves upwards under the pressure of the nitrogen, the lower outer ring plate of the inner pipe of the torrent injector is in sealing contact with the lower inner ring plate of the outer pipe of the torrent injector, the upper outer ring plate of the inner pipe of the torrent injector is in sealing contact with the first upper inner ring plate of the outer pipe of the torrent injector, and the nitrogen in the injection pipe is accelerated through the inner throat opening of the inner pipe of the torrent injector and then injected into the ash bucket.

The spider-web type anti-blocking fluidization ash conveying method and system for the dust remover have the characteristics and advantages that:

1. the invention breaks up ash in the ash bucket of the dust remover through the nitrogen cannon and the clear blocking gas (high-pressure nitrogen) sprayed by the torrent sprayer, meanwhile, the ash in the ash bucket is kept in a fluidized suspension state through the fluidization gas sprayed by the fluidizer and can enter the ash conveying air supply pipe through the ash outlet pipe, and the ash in the fluidized suspension state entering the ash conveying air supply pipe is conveyed to the ash conveying main pipe through the ash conveying gas so as to be gathered in the ash bin.

2. The invention connects the body of the fluidizer with the split flow tower in a detachable and sealed way, is convenient for installation and maintenance, ensures that the fluidization gas can enter the ash bucket through the fluidization plate by the arrangement of the fluidization plate on the body of the fluidizer, promotes the ash to be fluidized in a suspending way under the action of the fluidization gas, and simultaneously ensures that the fluidization gas uniformly passes through the fluidization plate by the warp-wise fluidization pipes and weft-wise fluidization annular pipes on the fluidization plate, thereby having simple structure and low cost.

3. According to the invention, through the cooperation of the inner pipe and the annular plates of the outer pipe of the torrent ejector, when the pressure in the ejector pipe reaches a standard value, the blocking-removing gas only enters the inner pipe and is accelerated through the inner shrinkage throat of the inner pipe, so that the energy storage of the blocking-removing gas is increased, the flow speed and the pressure of the blocking-removing gas are improved, the blocking is removed by using the energy of high-pressure nitrogen, and the blocking-removing effect is good.

4. The dust remover can be formed by modifying the blast furnace gas bag dust remover according to the requirements of purified gas and stored ash, so that the dust remover can be applied to the ash bin or charging bucket pressure equalizing dust remover in a targeted manner, the problem that the blast furnace gas bag dust remover is eliminated due to modification is solved, the repeated construction cost is reduced, and the resources are saved.

Drawings

The following drawings are only for purposes of illustration and description, and are not intended to limit the scope of the invention.

Fig. 1 is a schematic diagram of dilute phase pneumatic conveying in the prior art.

Fig. 2 is a schematic diagram of the dense phase pneumatic conveying in the prior art.

FIG. 3 is a schematic view of a prior art blast furnace gas bag-type dust collector;

FIG. 4 is a schematic diagram of a first embodiment of a spider-web type anti-blocking fluidized ash handling system for a dust collector of this invention;

FIG. 5 is another schematic structural view of a first embodiment of a spider-web type anti-blocking fluidized ash handling system for a dust collector of this invention;

FIG. 6 is a schematic diagram of a second embodiment of a spider-web type anti-blocking fluidized ash handling system for a dust collector of this invention;

FIG. 7 is another schematic structural view of a second embodiment of a spider-web type anti-blocking fluidized ash handling system for a dust collector of this invention;

FIG. 8 is a schematic diagram of a third embodiment of a spider-web type anti-blocking fluidized ash handling system for a dust collector of this invention;

FIG. 9 is another schematic structural view of a third embodiment of a spider-web type anti-blocking fluidized ash handling system for a dust collector of this invention;

FIG. 10 is a schematic diagram of a front view of a fluidizer of the spider-web type anti-blocking fluidized ash handling system for a dust collector of the present invention;

FIG. 11 is a schematic view of the structure taken along section line A-A in FIG. 10;

FIG. 12 is a schematic view of the structure along section line B-B in FIG. 10;

FIG. 13 is a schematic view of the structure along section line C-C in FIG. 11;

FIG. 14 is a schematic diagram of a nitrogen gun of the spider-web type anti-blocking fluidized ash conveying system for a dust collector of the present invention in a front view;

FIG. 15 is a schematic view of a torrent injector of a spider-web type anti-clogging fluidized ash handling system for a dust collector of the present invention.

FIG. 16 is another schematic structural view of a torrent injector of the spider-web type anti-clogging fluidized ash handling system for a dust collector of the invention.

Reference numerals illustrate:

the invention is that

1. A dust remover; 11. an ash bucket; 12. an ash discharge duct; 121. an ash collecting cover; 122. an ash outlet valve; 13. an ash conveying and gas supplying pipe; 131. an ash conveying and gas supplying valve; 14. an ash conveying main pipe; 15. an ash inlet duct; 16. reinforcing ribs; 17. a deflector; 18. a sealing plate; 19. a baffle plate;

2. a fluidizer; 21. a body; 22. a splitter column; 23. a fluidization plate; 231. a tray body; 232. a warp-wise fluidization tube; 2321. an air inlet groove; 2322. an air outlet hole; 233. a weft fluidization loop pipe; 2331. an air inlet hole; 2332. an exhaust hole; 24. an upper flange; 25. a lower flange; 26. a fluidization air supply pipe; 27. a fluidization air supply valve; 28. a branched fluidization tube; 29. a fluidization spray head;

3. nitrogen cannon; 31. a nitrogen tank; 32. a jet pipe; 321. a normally closed drain valve; 33. a jet branch pipe; 331. a normally open valve; 332. a pulse electromagnetic valve;

4. a torrent injector; 41. an outer tube; 411. a first upper inner ring plate; 412. a second upper inner ring plate; 413. a lower inner ring plate; 42. an inner tube; 421. an inner venturi orifice; 422. an upper outer ring plate; 423. a lower outer ring plate;

Alpha, upper included angle; beta, lower included angle; h1, an upper limit gray level meter; h2, high gray level meter; l1, a lower limit gray level meter; l2, a low gray level meter; p1, a pressure detector; p2, a pressure detector; p3, a pressure detector; and P4, a pressure detector.

Prior Art

9. A blast furnace gas bag-type dust remover; 91. an inlet; 92. an outlet; 93. a lattice plate; 94. and (5) filtering the bag.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Unless the directions are defined individually, the directions of up, down, left, right, etc. referred to herein are all directions of up, down, left, right, etc. in fig. 4 shown in the present invention, and are described herein together.

Embodiment one

As shown in fig. 4 to 16, the present invention provides a spider-web type anti-blocking fluidized ash conveying system for a dust remover, comprising: the dust remover 1 is provided with an ash bucket 11 at the lower end, an ash outlet conduit 12 is arranged on the side wall of the ash bucket 11 in a penetrating way, and the outlet of the ash outlet conduit 12 is connected with an ash conveying air supply pipe 13; the fluidizer 2 is fixedly arranged at the lower end of the ash bucket 11, the fluidizer 2 is arranged below the inlet of the ash outlet conduit 12, the inlet at the lower end of the fluidizer 2 is connected with the fluidization air supply pipe 26, the upper end of the fluidizer 2 is provided with a fluidization disc 23, and the fluidizer 2 is communicated with the ash bucket 11 through the fluidization disc 23.

Specifically, the dust remover 1 is in a cylindrical shape, a filter element is arranged in the dust remover 1 and is used for filtering ash in raw gas or semi-clean gas, the dust remover can be directly used as a large ash bin for storing ash, the dust remover can also be used as a dust remover of each device of a blast furnace, an ash bucket 11 at the lower end of the dust remover 1 is in a reverse conical shape and is used for temporarily storing ash, an ash outlet conduit 12 at the side wall of the ash bucket 11 is used for discharging the ash in the ash bucket 11 into an ash conveying air supply pipe 13, and the ash in the ash conveying air supply pipe 13 is output in a dense phase ash conveying mode through the ash conveying air in the ash conveying air supply pipe 13; the fluidizer 2 is generally in the shape of an inverted pagoda, and a fluidization air supply pipe 26 extends into the fluidizer 2 from the inlet at the lower end of the fluidizer 2 to supply fluidization air into the fluidizer 2 and can be discharged into the hopper 11 through the fluidization plate 23 to fluidize ash in the hopper 11.

Further, as shown in fig. 4, the inlet of the ash discharging duct 12 is provided with an ash collecting cover 121, the outlet of the ash discharging duct 12 is connected with the ash conveying air supply pipe 13 in a predetermined inclined angle, specifically, the ash collecting cover 121 is generally in a bell mouth shape, the ash in the ash hopper 11 is facilitated to enter the ash discharging duct 12 by the arrangement of the ash collecting cover 121, the ash discharging duct 12 is arranged in a manner of being inclined from bottom to top, that is, one end of the ash discharging duct 12 in the ash hopper 11 is lower than one end of the ash discharging duct 12 connected with the ash conveying air supply pipe 13, so that the horizontal section of the ash discharging duct 12 and the ash conveying air supply pipe 13 forms an inclined angle, and the arrangement of the inclined angle is favorable for conveying the ash.

Further, as shown in fig. 4, the outlet of the ash conveying air supply pipe 13 is connected with an ash bin through an ash conveying main pipe 14, and ash entering the ash conveying air supply pipe 13 from the ash hopper 11 through the ash outlet pipe 12 can be converged into the ash bin through the ash conveying main pipe 14 under the action of ash conveying air in the ash conveying air supply pipe 13, so that ash output is realized. Preferably, the ash transporting gas in the ash transporting gas supply pipe 13 is a clean gas, for example, the clean gas directly purified by the dust remover 1 itself is used as the ash transporting gas, and of course, nitrogen may also be used, for example, nitrogen provided by a nitrogen tank is used as the ash transporting gas, and of course, other gases may also be used as the ash transporting gas, which is not limited herein.

Further, as shown in fig. 4 to 13, the fluidizer 2 includes a main body 21 and a splitter 22, the splitter 22 is detachably sealed below the main body 21, the upper end of the main body 21 is sealed and covered by the fluidization plate 23, the outlet end of the fluidization air supply pipe 26 extends into the splitter 22, the fluidization gas entering the splitter 22 through the fluidization air supply pipe 26 can enter the ash bucket 11 through the fluidization plate 23, specifically, the main body 21 of the fluidizer 2 is substantially cylindrical, the splitter 22 is substantially in a semi-elliptical shape, the upper end opening of the splitter 22 is opposite to the lower end opening of the main body 21 and can be in sealing connection, the fluidization plate 23 is substantially in a circular flat plate shape, the sealing cover is arranged at the upper end of the main body 21, the outlet end of the fluidization air supply pipe 26 extends into the splitter 22, so that the fluidization gas can enter the ash bucket 11 through the fluidization plate 23 first and then uniformly, preferably, the fluidization gas in the fluidization air supply pipe 26 is in a clean gas pipe 1, for example, the gas can enter the clean gas directly through the gas pipe 1 and can be directly purified at high pressure, and no other clean gas can be restricted.

Further, as shown in fig. 11 and 13, the fluidization plate 23 includes a plate body 231 and a plurality of radial fluidization tubes 232, the tray body 231 is provided with a plurality of warp-direction grooves, each warp-direction groove is internally and hermetically embedded with one warp-direction fluidization pipe 232, the lower side wall of the warp-direction fluidization pipe 232 protruding out of the lower surface of the tray body 231 is provided with a plurality of air inlet grooves 2321, the upper side wall of the warp-direction fluidization pipe 232 protruding out of the upper surface of the tray body 231 is provided with a plurality of air outlet holes 2322 at intervals, in particular, the tray body 231 of the fluidization tray 23 is used for separating the fluidizer 2 from the ash bucket 11, which is in the form of a circular flat plate, a plurality of warp grooves on the disk 231 intersect at the center of the disk 231, and the plurality of warp direction grooves uniformly divide the disk 231 into a plurality of sector areas, the warp direction fluidization tube 232 is in a circular tube shape, and is inserted into the radial grooves of the tray 231 in the radial direction of the tray 231, the inserted radial fluidization tubes 232 protrude from the upper and lower surfaces of the tray 231, and a plurality of strip-shaped air inlet grooves 2321 are arranged on the lower side wall of the cambered surface shape of the lower surface of the protruding tray 231 (i.e. positioned in the fluidizer 2), so as to ensure sufficient air inlet, a plurality of air outlet holes 2322 are arranged on the upper side wall of the cambered surface shape of the upper surface of the protruding tray 231 (i.e. positioned in the ash bucket 11), the plurality of air outlet holes 2322 can be uniformly arranged at equal intervals along the axial direction of the radial fluidization pipes 232, so as to ensure uniform air outlet to each area of the ash bucket 11, and preferably, the radial fluidization pipes 232 can be sealed and welded after being embedded in the radial grooves, so as to avoid air leakage from an installation gap, and each radial fluidization pipe 232 is mutually inserted in the center of the tray 231, and the joints are sealed to avoid air leakage, preferably, the tray 231 is provided with four or six warp grooves, and the number of the corresponding warp fluidization tubes 232 is four or six.

Further, as shown in fig. 11 and 13, the fluidization plate 23 is fixedly provided with a plurality of latitudinal fluidization circular pipes 233, the plurality of latitudinal fluidization circular pipes 233 are concentrically and radially arranged at intervals, the latitudinal fluidization circular pipes 233 are hermetically inserted into each of the longitudinal fluidization pipes 232, the lower side wall of the latitudinal fluidization circular pipe 233 positioned in the longitudinal fluidization pipe 232 is provided with an air inlet hole 2331, the upper side wall of the latitudinal fluidization circular pipe 233 positioned outside the longitudinal fluidization pipe 232 is provided with a plurality of air outlet holes 2332 at intervals, specifically, the radial section of the latitudinal fluidization circular pipe 233 is generally circular, each latitudinal fluidization circular pipe 233 is circularly or polygonal along the surface of the plate 231, each latitudinal fluidization circular pipe 233 is fixedly arranged on the upper surface of the plate 231 at equal intervals along the radial direction of the plate 231, and each latitudinal fluidization ring pipe 233 penetrates through each longitudinal fluidization pipe 232 and is provided with an air inlet hole 2331 at the part penetrating through each longitudinal fluidization pipe 232, and a plurality of air outlet holes 2332 are arranged at the part penetrating out of each longitudinal fluidization pipe 232 at equal intervals along the axial direction of each latitudinal fluidization ring pipe 233, wherein each longitudinal fluidization pipe 232 and each latitudinal fluidization ring pipe 233 are staggered to be in a spider-web shape, so that fluidization air is discharged into each region of the ash bucket 11 through a plurality of uniformly distributed air outlet holes 2322 and air outlet holes 2332, uniform air outlet is ensured to each region of the ash bucket 11, and an air cushion layer is formed at the bottom of the ash bucket 11 to balance the gravity of ash, enhance the ash fluidity, greatly strengthen the ash fluidization effect, and facilitate the ash in a fluidization state to enter the ash outlet guide pipe 12.

Further, the nominal diameter of the warp-wise fluidization tube 232 is greater than the nominal diameter of the weft-wise fluidization collar 233, so that the weft-wise fluidization collar 233 can be completely positioned in the warp-wise fluidization tube 232, the fluidization gas in the warp-wise fluidization tube 232 can be easily transferred into the weft-wise fluidization collar 233, the nominal diameter of the warp-wise fluidization tube 232 is greater than the width of the warp-wise groove of the tray body 231, the warp-wise fluidization tube 232 can be embedded in the warp-wise groove of the tray body 231, sealing connection between the warp-wise fluidization tube 232 and the warp-wise fluidization collar 233 is achieved through welding, the warp-wise fluidization tube 232 is enabled to protrude out of the upper surface of the tray body 231 and the lower surface of the tray body 231, the air inlet groove 2321 and the air outlet holes 2322 are facilitated to be arranged, the width of the warp-wise fluidization groove 231 is 40mm, the nominal diameter of the warp-wise fluidization tube 232 is 80mm, the width of the warp-wise fluidization groove 2321 is 20mm, the diameter of the warp-wise fluidization collar 232 is 20mm, the diameter of the warp-wise fluidization collar 233 is also required to be arranged at the position of course, and the diameter of the warp-wise fluidization collar is required to be limited to be the practical diameter of 233, and the weft-wise fluidization collar is set to be at the diameter of 233, and the diameter of the warp-wise fluidization collar is required to be set to be at the diameter of the practical diameter of 233, and the diameter of the warp-233 is required to be the diameter of the diameter is at the diameter of the warp-233 is to be, and the diameter is set to be, and the diameter is at the diameter of the diameter is required to be, and the diameter is to be.

Further, as shown in fig. 10, an upper flange 24 is disposed at the opening at the lower end of the body 21, a lower flange 25 is disposed at the opening at the upper end of the splitter 22, the body 21 is connected with the splitter 22 by the upper flange 24 and the lower flange 25 in a sealing manner, wherein the diameter of the upper flange 24 is greater than the diameter of the opening at the upper end of the splitter 22 and the diameter of the opening at the lower end of the body 21, a plurality of screw holes are disposed at the periphery of the upper flange 24 at equal intervals along the circumferential direction, a plurality of screw holes are disposed at the periphery of the lower flange 25 at equal intervals along the circumferential direction, the screw holes of the upper flange 24 are in one-to-one correspondence with the screw holes of the lower flange 25, and the connection is achieved by a connecting member such as a bolt, wherein a sealing ring can be further disposed between the upper flange 24 and the lower flange 25 to ensure the sealing connection of the two.

Further, as shown in fig. 10 and 12, the outlet end of the fluidization air supply pipe 26 is radially and outwardly provided with a plurality of branch fluidization pipes 28, the outlet ends of the plurality of branch fluidization pipes 28 are circumferentially and equally spaced, the outlet end of the fluidization air supply pipe 26 and the outlet end of each branch fluidization pipe 28 are respectively provided with a fluidization nozzle 29, specifically, the fluidization nozzle 29 at the outlet end of the fluidization air supply pipe 26 and the fluidization nozzle 29 at the outlet end of each branch fluidization pipe 28 are substantially formed into a pistil shape, and the plurality of branch fluidization pipes 28 are arranged so that the fluidization gas entering the diversion tower 22 through the fluidization air supply pipe 26 is uniformly distributed in the diversion tower 22, thereby facilitating the uniform rising of the fluidization gas and entering the ash bucket 11 through the fluidization tray 23.

Further, as shown in fig. 4 and 14, the spider-web type anti-blocking fluidization ash conveying system for a dust collector further comprises a nitrogen gun 3, the nitrogen gun 3 comprises a nitrogen tank 31 and a plurality of injection pipes 32, the injection pipes 32 are arranged on the fluidizer 2 in a penetrating manner at intervals along the circumferential direction, the inlet of each injection pipe 32 is connected with the nitrogen tank 31, the outlet of each injection pipe 32 penetrates out of the fluidizer 2 and is provided with a shock injector 4, specifically, the nitrogen gun 3 is used as a fluidization starting device, high-pressure nitrogen released by the temporary opening of the nitrogen tank 31 can impact ash deposited in the ash hopper 11 at high pressure and high speed through the injection pipes 32 and the shock injector 4 to break up ash, fluidization of subsequent ash under the action of fluidization gas is facilitated, wherein the nitrogen tank 31 of the nitrogen gun 3 is in a generally cylindrical shape, the outlet end of the nitrogen gun is connected with each injection pipe 32, and the outlet end of the nitrogen gun 3 can be further provided with a pressure sensor, a temperature sensor and a flow sensor for detecting, displaying and feeding back to an industrial control machine (or a controller).

Further, as shown in fig. 15 and 16, the surge injector 4 includes an outer tube 41 and an inner tube 42, the inner tube 42 is capable of moving up and down and is inserted into the outer tube 41, a first upper inner ring plate 411 and a second upper inner ring plate 412 are protruded at intervals on the upper end of the inner wall of the outer tube 41, a lower inner ring plate 413 is protruded on the lower end of the inner wall of the outer tube 41, an inner throat 421 is provided in the middle of the inner tube 42, an upper outer ring plate 422 is protruded on the upper end of the inner throat 421 of the inner tube 42, a lower outer ring plate 423 is protruded on the lower end of the inner throat 421 of the inner tube 42, the upper outer ring plate 422 is located between the first upper inner ring plate 411 and the second upper inner ring plate 412, a gap is provided between the upper outer ring plate 422 and the inner wall of the outer tube 41, the lower outer ring plate 423 is located below the lower inner ring plate 413, and a gap is formed between the lower outer ring plate 423 and the inner wall of the outer tube 41 so that when the air pressure of the high-pressure nitrogen gas in the injection tube 32 does not reach a standard value (the standard value here is enough to impact ash in the ash bucket), the gas in the injection tube 32 can be divided into two branches, the first branch enters the inner tube 42 and discharges the injected ash bucket 11 so as to impact the accumulated ash, the second branch sequentially passes through the gap between the lower outer ring plate 423 and the outer tube 41, the gap between the lower inner ring plate 413 and the inner tube 42, the gap between the inner tube 42 and the outer tube 41, the gap between the second upper inner ring plate 412 and the inner tube 42, the gap between the upper outer ring plate 422 and the outer tube 41, and the gap between the first upper inner ring plate 411 and the inner tube 42, and then the inner throat 421 of the inner tube 42 is formed by being recessed radially inward, the lower included angle beta between the inclined wall surface below the inner throat 421 and the vertical surface of the inner tube 42 is smaller than the upper included angle alpha between the inclined wall surface above the inner throat 421 and the vertical surface of the inner tube 42, so that high-pressure nitrogen can be rapidly ejected after being compressed and accelerated through the inner throat 421, the scattering effect is ensured, namely, the inner tube 42 is firstly necked and then necked, the flow speed is improved when the air flow is necked, potential energy is converted into kinetic energy when the air flow is necked, the kinetic energy is converted into potential energy when the air flow is necked, a shock wave surface is formed, the shock wave surface has potential energy with a higher element than the pressure of the air flow, ash blocked above the shock flow ejector can be pushed away easily, and a condition is created for fluidization.

Further, as shown in fig. 16, in a state that the pressure of the nitrogen gas in the injection pipe 32 reaches the calibration value, the lower outer ring plate 423 of the inner pipe 42 is in sealing contact with the lower inner ring plate 413 of the outer pipe 41, and the upper outer ring plate 422 of the inner pipe 42 is in sealing contact with the first upper inner ring plate 411 of the outer pipe 41, so that the nitrogen gas in the injection pipe 32 can only pass through the inner pipe 42 of the first branch and be discharged, but cannot enter the second branch, thereby ensuring that the nitrogen gas is fully accelerated in the inner pipe 42, and ensuring the nitrogen acceleration effect and the scattering effect of ash in the ash bucket 11. The invention restricts the flow of high-pressure nitrogen flowing in the high-pressure nitrogen through the special structure of the torrent ejector 4, and utilizes the structure of the inner throat 421 and the upward movement of the inner pipe 42 in the outer pipe 41 to change the flow passage restriction nitrogen flow, so that part of kinetic energy which cannot be used for pushing ash blockage of the high-pressure nitrogen is converted into pressure potential energy, the nitrogen is pressurized, the energy of the blockage removal gas is increased, and the blockage removal effect is improved.

Further, as shown in fig. 14, the injection pipe 32 is provided with a normally closed drain valve 321, at least two injection branch pipes 33 are connected in parallel, each injection branch pipe 33 is provided with a normally open valve 331 and a pulse electromagnetic valve 332, the internal diameters of the pulse electromagnetic valves 332 on each injection branch pipe 33 are unequal, specifically, the normally closed drain valve 321 is used for draining accumulated water in the injection pipe 32, the normally closed drain valve 321 is in a closed state in a normal state, and is opened when drainage is needed, or a normally closed drain valve is respectively arranged on each injection branch pipe 33 as required, the normally open valve 331 is in an open state in a normal state and is closed when a certain injection branch pipe 33 needs to be overhauled, the pulse electromagnetic valve 332 is in a closed state in a normal state, and is opened to provide clear blocking gas when an opening signal of an industrial personal computer is received, and the specific structures of the normally closed drain valve 321, the normally closed drain valve 331 and the pulse electromagnetic valve 332 are in known structures in the prior art, and the normally closed drain valve 332 can provide high-pressure nitrogen gas supply required by various working conditions.

Further, as shown in fig. 4 to 9, the side wall of the dust collector 1 is provided with an upper limit ash level gauge H1 and a lower limit ash level gauge L1 at intervals from top to bottom, so as to give an alarm when the ash level in the dust collector 1 reaches the upper limit or the lower limit, the lower limit ash level gauge L1 is located above the inlet of the ash discharge conduit 12 (preferably, the lower limit ash level gauge L1 is located at 500mm above the inlet of the ash discharge conduit 12), and early warning is performed on the ash level in the ash bucket 11 in time, so that the ash level is prevented from falling below the lower limit ash level gauge L1, and the fluidizing gas is caused to directly enter the ash bucket 11 (wherein the upper limit ash level gauge H1 and the lower limit ash level gauge L1 are known in the prior art, such as a radio frequency admittance gauge, a pressure sensor, etc.), and the inlet of the ash discharge conduit 12 is ensured to be always located in the ash, the ash discharge conduit 12 is provided with an ash discharge valve 122, the ash conveying air supply pipe 13 is provided with an ash conveying air supply valve 131, the fluidization air supply pipe 26 is provided with a fluidization air supply valve 27, the upper limit ash position meter H1, the lower limit ash position meter L1, the ash discharging valve 122, the ash conveying air supply valve 131 and the fluidization air supply valve 27 are all electrically connected with an industrial computer, wherein the injection pipe 32 is provided with a pulse electromagnetic valve 332, the pulse electromagnetic valve 332 is also electrically connected with the industrial computer so as to realize information feedback of each valve, linkage control is realized through the industrial computer, for example, when the ash accumulation amount in the ash hopper 11 exceeds the upper limit ash position meter H1, the upper limit ash position meter H1 gives an alarm, signals are fed back to the industrial computer, the industrial computer controls to open the ash discharging valve 122, controls the pulse electromagnetic valve 332 to open, provides clear blocking gas, and immediately opens the fluidization air supply valve 27 and the ash conveying air supply valve 131 after the pulse electromagnetic valve 332 is opened so as to respectively provide fluidization gas and ash conveying gas, the industrial personal computer is a technology known in the prior art, and is not limited herein.

Preferably, the side wall of the dust remover 1 is further provided with a high-level ash level meter H2 and a low-level ash level meter L2, the high-level ash level meter H2 is located above the low-level ash level meter L2, the high-level ash level meter H2 is located below the upper limit ash level meter H1, the low-level ash level meter L2 is located above the lower limit ash level meter L1, and the high-level ash level meter H2 and the low-level ash level meter L2 are used for feeding back and displaying ash accumulation signals so as to facilitate real-time inspection of workers.

Preferably, as shown in fig. 4, a plurality of pressure detectors may be further disposed on the sidewall of the dust collector 1 to detect the pressure of each working condition, for example, a pressure detector P1 is disposed above the filter bag, a pressure detector P2 is disposed below the filter bag to detect the pressure difference between the upper and lower sides of the filter bag by the pressure detectors P1 and P2, a pressure detector P3 is disposed below the pressure detector P2, the pressure detector P3 is disposed above the upper limit ash level meter H1, by making the lower limit ash level meter L1 a pressure detector to measure the pressure value generated by ash and the ash gravity (the pressure value detected by the lower limit ash level meter L1-the pressure value detected by the pressure detector P3=the pressure value generated by ash above the lower limit ash level meter L1), the pressure value generated by the gravity value corresponding to the pressure value of +500mm ash in the ash bucket 11 is the pressure value of the ash at the inlet of the ash outlet conduit 12, so that the production work and the ash discharging work can be arranged according to the detected values, the production work efficiency is improved, the production optimization is realized, and meanwhile, the values can be fed back to an industrial personal computer to provide a basis for the industrial personal computer to adjust the opening degrees of the ash outlet valve 122, the ash conveying air supply valve 131 and the fluidization air supply valve 27, thereby realizing the control of the pressure and the flow of the fluidization air supply and the ash conveying air supply, and ensuring the ash to have the highest ash-air ratio (namely the ash quality and the carrier air Ratio of deposition) through the ash discharge conduit 12, the most economical and safe fluidization dense phase ash conveying operation is realized, and the ash-gas ratio is preferably 30kg/Nm ³ (i.e., kilograms per standard cubic meter).

The blast furnace gas bag-type dust collector 9 is of a structure known in the prior art (as shown in fig. 3), gas to be filtered enters from an inlet 91, is filtered by a filter bag 94 in the blast furnace gas bag-type dust collector and then is output from an outlet 92, and ash falls to the bottom of the dust collector 9, wherein a lattice plate 93 in the blast furnace gas bag-type dust collector is used for overhauling. The dust remover 1 of the invention can be modified based on the existing blast furnace gas bag-type dust remover 9, namely the invention is a spider-web type anti-blocking fluidization dust conveying method and system for dust remover based on the modification of the blast furnace gas bag-type dust remover, in one embodiment, as shown in fig. 4 and 5, the dust remover 1 is the dust remover with the filtering function (through a filter element) and the dust storage function (through a dust hopper), and the dust remover can adopt the shell of the blast furnace gas bag-type dust remover 9 so as to avoid the waste of the blast furnace gas bag-type dust remover 9 and save resources; in another embodiment, as shown in fig. 6 and 7, the dust remover 1 is an ash bin modified by a blast furnace gas bag-type dust remover 9, a plurality of ash inlet pipes 15 are arranged on the side wall of the dust remover 1, and reinforcing ribs 16 are arranged at the upper end and the middle part of the ash hopper 11 so as to increase the structural strength, ensure the strength of the dust remover 1 when storing a large amount of ash, avoid the waste of the blast furnace gas bag-type dust remover 9, save resources, reduce the number of filter bags and the height of the filter bags, and increase the number of supports on the peripheral wall of the dust remover 1 according to the weight after storing ash; in yet another embodiment, the dust remover 1 is a tank pressure equalizing dust remover modified by a blast furnace gas bag dust remover 9, an air inlet is arranged at the lower end of the side wall of the dust remover 1, an air outlet is arranged at the upper end of the side wall of the dust remover 1, a spiral deflector 17 is arranged in the dust remover 1 corresponding to the air inlet, cyclone dust removal is realized, a guide cylinder is axially and upwardly extended from the middle part of the deflector 17, the guide cylinder penetrates through a baffle plate 18 in the dust remover 1, a plurality of baffle plates 19 are arranged above the baffle plate 18 at intervals to modify an internal flow field, improve the circulation of gas in the dust remover, realize economical and safe gas flow, and simultaneously, due to the arrangement of the spiral deflector 17, the filter bag can be completely or partially removed or the height of the filter bag can be reduced.

The spider-web type anti-blocking fluidization ash conveying system (i.e. the spider-web type anti-blocking fluidization ash conveying system) for the dust remover is used for providing blocking-removing gas (high-pressure nitrogen) through the nitrogen cannon 3, namely, the high-pressure nitrogen in the nitrogen tank 31 of the nitrogen cannon is instantaneously released by utilizing the pulse electromagnetic valve 332 of the nitrogen cannon 3 to clear and block ash conveying or unloading blocking, the blocking-removing gas is sprayed into the ash bucket 11 in an accelerating way through the torrent ejector 4 to break up ash in the ash bucket 11, fluidization gas is provided through the fluidizer 2 and uniformly enters the ash bucket 11 through the fluidization disc 23 of the fluidizer 2, so that ash in the ash bucket 11 keeps a fluidization suspension state, the ash in the fluidization suspension state is conveyed to the ash conveying pipe 13 through the ash outlet conduit 12, and the ash conveying gas in the ash conveying pipe 14, so that the coupling of a fluidization technology and the ash conveying technology is realized, the fluidization effect is high, the ash conveying is smoother, the problem of blocking of continuous ash in a large range can be effectively solved, the ash deposition blocking problem is avoided, the ash deposition blocking problem is saved, and the ash consumption is low. Meanwhile, the dust remover 1 can be formed by reforming a blast furnace gas bag-type dust remover (BFC) according to the requirements of purified gas and stored ash so as to be applied to a dust bin or a charging bucket pressure equalizing dust remover in a targeted manner, thereby solving the problem that the blast furnace gas bag-type dust remover is eliminated due to reforming, reducing the repeated construction cost and saving resources.

Second embodiment

The invention also provides a spider-web type anti-blocking fluidization ash conveying method (namely, a spider-web type anti-blocking fluidization ash conveying method) for the dust remover, wherein the spider-web type anti-blocking fluidization ash conveying method for the dust remover adopts the spider-web type anti-blocking fluidization ash conveying system for the dust remover, and the structure, the working principle and the effect of the spider-web type anti-blocking fluidization ash conveying system for the dust remover are the same as those of the first embodiment, and the spider-web type anti-blocking fluidization ash conveying method for the dust remover comprises the following steps of:

step a, opening a fluidization air supply valve 27 on a fluidization air supply pipe 26, and enabling fluidization air to enter the fluidizer 2 and enter the ash bucket 11 through the fluidization plate 23 so as to enable ash in the ash bucket 11 to be in a fluidization suspension state;

and b, enabling ash in a fluidized suspension state to enter an ash conveying and supplying pipe 13 through an ash outlet pipe 12, and enabling the ash to be gathered into an ash bin through an ash conveying main pipe 14 under the action of ash conveying gas in the ash conveying and supplying pipe 13.

Further, in the step a, after the fluidizing gas in the fluidizer 2 enters the warp fluidization tube 232 through the air inlet groove 2321 of the warp fluidization tube 232, a part of the fluidizing gas enters the ash bucket 11 through the air outlet holes 2322 of the warp fluidization tube 232, and another part of the fluidizing gas enters the weft fluidization loop 233 through the air inlet holes 2331 of the weft fluidization loop 233 and enters the ash bucket 11 through the air outlet holes 2332 of the weft fluidization loop 233, so as to realize the discharge of the fluidizing gas into each region of the ash bucket 11 through the uniformly distributed plurality of air outlet holes 2322 and the air outlet holes 2332, which are formed by the staggered spider web shape of each warp fluidization tube 232 and each weft fluidization loop 233.

Further, before the step a, a step a1 is further included, the nitrogen cannon 3 is started, so that nitrogen in the nitrogen tank 31 enters the torrent injector 4 through the injection pipe 32, ash in the ash bucket 11 of the dust remover 1 is scattered through the torrent injector 4, and a guarantee is provided for fluidization.

Further, the ash level in the ash bucket 11 is detected by the upper limit ash level meter H1 and the lower limit ash level meter L1 on the dust remover 1, when the upper limit ash level meter H1 of the dust remover 1 alarms, the step a1 is started, that is, the result detected by the upper limit ash level meter is fed back to the industrial personal computer, and the opening and closing of the nitrogen cannon 3 are controlled by the industrial personal computer, the fluidization preparation work, that is, the ash breaking and blocking removal work is started, so as to push away thick ash blocking, of course, if the ash bucket 11 is blocked in operation, the opening and closing of the nitrogen cannon 3 can be controlled by the industrial personal computer at any time, the blocking removal work is started, wherein the blocking removal gas is high-pressure nitrogen in the nitrogen cannon 3, and when the lower limit ash level meter L1 of the dust remover 1 alarms, the ash outlet valve 122 on the ash outlet pipe 12, the fluidization valve 27 on the fluidization air supply pipe 26 and the ash conveying air valve 131 on the ash conveying pipe 13 are sequentially closed, so that ash conveying is ensured to be completely conveyed, and the ash conveying gas is nitrogen or clean coal gas.

Further, in the step a1, when the pressure of the nitrogen entering the injection pipe 32 reaches the calibration value, the inner pipe 42 of the torrent injector 4 moves upwards under the pressure of the nitrogen, the lower outer ring plate 423 of the inner pipe 42 of the torrent injector 4 is in sealing contact with the lower inner ring plate 413 of the outer pipe 41 of the torrent injector 4, the upper outer ring plate 422 of the inner pipe 42 of the torrent injector 4 is in sealing contact with the first upper inner ring plate 411 of the outer pipe 41 of the torrent injector 4, and the nitrogen in the injection pipe 32 is injected into the ash bucket 11 after being accelerated through the inner throat 421 of the inner pipe 42 of the torrent injector 4, so that the high-pressure nitrogen entering the inner pipe 42 is accelerated again by the torrent injector 4, the energy storage of the high-pressure nitrogen is realized, the speed and impact force of the high-pressure nitrogen entering the ash bucket 11 are ensured, the ash in the ash bucket 11 is ensured to be dispersed, the subsequent fluidization work and the ash conveying work are ensured.

In step b, ash conveying gas flows through the ash conveying gas supply pipe 13, the ash outlet valve 122 is opened, after the ash in the ash hopper 11 is fluidized, a low-pressure space is formed in front of the inlet of the ash outlet conduit 12, the ash in a fluidized suspension state enters the ash outlet conduit 12 and enters the ash conveying gas supply pipe 13 under the action of the self positive pressure, and the ash conveying gas in the ash conveying gas supply pipe 13 is used as a plug column pressure source of dense phase ash conveying to push the fluidized ash to finish conveying.

The invention relates to a spider-web type anti-blocking fluidization ash conveying method and a spider-web type anti-blocking fluidization ash conveying system (namely a spider-web type anti-blocking fluidization ash conveying method and a spider-web type anti-blocking fluidization ash conveying system) for a dust remover, wherein ash in an ash bucket 11 of the dust remover 1 is scattered through clear blocking gas (high-pressure nitrogen) sprayed by a nitrogen gun 3 and a torrent sprayer 4, and meanwhile, the ash in the ash bucket 11 is kept in a fluidization suspension state through fluidization gas sprayed by a fluidizer 2 and can enter an ash conveying air supply pipe 13 through an ash outlet conduit 12, and the ash in a fluidization suspension state entering the ash conveying air supply pipe 13 is conveyed to an ash conveying main pipe 14 through the ash conveying gas so as to be converged into an ash bin. In addition, the invention can be applied to a coupling system (i.e. I-CHEN) for recycling the equalizing gas of the charging bucket and dry dedusting of the blast furnace gas to form a fluidization ash conveying coupling system (i.e. Fluidized conveying Coupling system in Hybrid of Equalizing gas recovery and Networks of blast furnace gas dedusters, F-CHEN for short) for recycling the equalizing gas of the charging bucket and dry dedusting of the blast furnace gas, in particular to a dense-phase pneumatic ash conveying coupling system (i.e. Dense phase pneumatic ash conveying Coupling system in Hybrid of Equalizing gas recovery and Networks of blast furnace gas dedusters, D-CHEN for short) for recycling the equalizing gas of the charging bucket and dry dedusting of the blast furnace gas, for example, the invention can be applied to a furnace top equalizing gas recycling device, and the purified gas purified by the dry dedusting device of the blast furnace gas is used as fluidization gas and ash conveying gas to realize fluidization ash conveying at an ash discharge hole.

The present invention is not limited to the above-mentioned embodiments, but is not limited to the above-mentioned embodiments, and any person skilled in the art can make some changes or modifications to the equivalent embodiments without departing from the scope of the technical solution of the present invention, but any simple modification, equivalent changes and modifications to the above-mentioned embodiments according to the technical substance of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A spider-web type anti-blocking fluidized ash conveying system for a dust remover, characterized in that the spider-web type anti-blocking fluidized ash conveying system for the dust remover comprises:

the dust remover is provided with an ash bucket at the lower end, an ash outlet conduit is penetrated on the side wall of the ash bucket, and the outlet of the ash outlet conduit is connected with an ash conveying air supply pipe;

the fluidizer is fixedly arranged at the lower end of the ash bucket, the fluidizer is positioned below the inlet of the ash outlet guide pipe, the inlet at the lower end of the fluidizer is connected with the fluidization air supply pipe, the upper end of the fluidizer is provided with a fluidization disc, and the fluidizer is communicated with the ash bucket through the fluidization disc;

An inlet of the ash outlet conduit is provided with an ash collecting cover, and an outlet of the ash outlet conduit is obliquely connected with the ash conveying and supplying pipe at a preset included angle;

the outlet of the ash conveying air supply pipe is connected with an ash bin through an ash conveying main pipe, and ash entering the ash conveying air supply pipe from the ash hopper through the ash outlet pipe can be gathered into the ash bin through the ash conveying main pipe under the action of ash conveying gas in the ash conveying air supply pipe;

the spider-web type anti-blocking fluidization ash conveying system for the dust remover further comprises a nitrogen gun, wherein the nitrogen gun comprises a nitrogen tank and a plurality of injection pipes, the injection pipes are arranged on the fluidizer in a penetrating manner at intervals along the circumferential direction, the inlet of each injection pipe is connected with the nitrogen tank, and the outlet of each injection pipe penetrates out of the fluidizer and is provided with a torrent injector;

the torrent injector comprises an outer pipe and an inner pipe, wherein the inner pipe can vertically move and is arranged in the outer pipe in a penetrating manner, a first upper inner annular plate and a second upper inner annular plate are convexly arranged at the upper end of the inner wall of the outer pipe at intervals, a lower inner annular plate is convexly arranged at the lower end of the inner wall of the outer pipe, an inner throat opening is arranged in the middle of the inner pipe, an upper outer annular plate is convexly arranged at the upper end of the inner throat opening of the inner pipe, a lower outer annular plate is convexly arranged at the lower end of the inner throat opening of the inner pipe, the upper outer annular plate is positioned between the first upper inner annular plate and the second upper inner annular plate, a gap is reserved between the upper outer annular plate and the inner wall of the outer pipe, and a gap is reserved between the lower outer annular plate and the inner wall of the outer pipe;

In a state that the pressure of nitrogen in the injection pipe reaches a standard value, the lower outer annular plate of the inner pipe is in sealed contact with the lower inner annular plate of the outer pipe, and the upper outer annular plate of the inner pipe is in sealed contact with the first upper inner annular plate of the outer pipe;

when the pressure of the nitrogen entering the injection pipe reaches a standard value, the inner pipe of the torrent injector moves upwards under the pressure of the nitrogen, the lower outer ring plate of the inner pipe of the torrent injector is in sealing connection with the lower inner ring plate of the outer pipe of the torrent injector, the upper outer ring plate of the inner pipe of the torrent injector is in sealing connection with the first upper inner ring plate of the outer pipe of the torrent injector, and the nitrogen in the injection pipe is accelerated through the inner throat opening of the inner pipe of the torrent injector and then injected into the ash bucket.

2. The spider-web anti-blocking fluidization ash conveying system for a dust collector according to claim 1, wherein the fluidizer comprises a body and a diversion tower, the diversion tower is detachably sealed below the body, the fluidization tray is covered by the upper end seal of the body, the outlet end of the fluidization air supply pipe extends into the diversion tower, and fluidization gas entering the diversion tower through the fluidization air supply pipe can enter the ash bucket through the fluidization tray.

3. The spider-web type anti-blocking fluidization ash conveying system for a dust remover according to claim 2, wherein the fluidization plate comprises a plate body and a plurality of warp-direction fluidization pipes, a plurality of warp-direction grooves are formed in the plate body, one warp-direction fluidization pipe is embedded in each warp-direction groove in a sealing mode, a plurality of air inlet grooves are formed in the lower side wall of each warp-direction fluidization pipe protruding out of the lower surface of the plate body, and a plurality of air outlet holes are formed in the upper side wall of each warp-direction fluidization pipe protruding out of the upper surface of the plate body at intervals.

4. The spider-web type anti-blocking fluidization ash conveying system for a dust remover according to claim 3, wherein a plurality of latitudinal fluidization annular pipes are fixedly arranged on the fluidization plate, the latitudinal fluidization annular pipes are concentric and are arranged at radial intervals, the latitudinal fluidization annular pipes are hermetically penetrated in the longitudinal fluidization pipes, air inlets are arranged on the lower side wall of the latitudinal fluidization annular pipe positioned in the longitudinal fluidization pipes, and a plurality of air outlets are arranged on the upper side wall of the latitudinal fluidization annular pipe positioned outside the longitudinal fluidization pipes at intervals.

5. The spider-web anti-blocking fluidized ash transfer system for a dust collector of claim 4, wherein the nominal diameter of the warp-wise fluidization tube is greater than the nominal diameter of the weft-wise fluidization collar, and wherein the nominal diameter of the warp-wise fluidization tube is greater than the width of the warp-wise grooves of the tray.

6. The spider-web type anti-blocking fluidized ash conveying system for a dust remover according to claim 2, wherein an upper flange is arranged at the opening at the lower end of the body, a lower flange is arranged at the opening at the upper end of the diversion tower, and the body and the diversion tower are connected in a sealing manner through the upper flange and the lower flange.

7. The spider-web type anti-blocking fluidized ash conveying system for a dust remover according to claim 1, wherein the outlet end of the fluidized air supply pipe is radially and outwardly divergently provided with a plurality of branched fluidized pipes, the outlet ends of the branched fluidized pipes are circumferentially and equally spaced, and the outlet end of the fluidized air supply pipe and the outlet end of each branched fluidized pipe are provided with fluidized spray heads.

8. The spider-web anti-blocking fluidization ash conveying system for a dust remover according to claim 1, wherein an upper limit ash level gauge and a lower limit ash level gauge are arranged on the side wall of the dust remover at intervals from top to bottom, the lower limit ash level gauge is positioned above an inlet of the ash outlet conduit, an ash outlet valve is arranged on the ash outlet conduit, an ash conveying air supply valve is arranged on the ash conveying air supply pipe, a fluidization air supply valve is arranged on the fluidization air supply pipe, and the upper limit ash level gauge, the lower limit ash level gauge, the ash outlet valve, the ash conveying air supply valve and the fluidization air supply valve are all electrically connected with an industrial control computer.

9. The web-type anti-blocking fluidized ash conveying system for a dust remover according to claim 1, wherein the side wall of the dust remover is provided with a plurality of ash inlet pipes, and the upper end and the middle part of the ash bucket are respectively provided with a reinforcing rib.

10. The spider-web type anti-blocking fluidization ash conveying system for a dust remover according to claim 1, wherein an air inlet is formed in the lower end of the side wall of the dust remover, an air outlet is formed in the upper end of the side wall of the dust remover, a spiral guide plate is arranged in the dust remover corresponding to the air inlet, a guide cylinder is axially and upwardly arranged in the middle of the guide plate in an extending mode, the guide cylinder penetrates through a sealing plate in the dust remover, and a plurality of baffle plates are arranged above the sealing plate at intervals.

11. The spider-web anti-blocking fluidized ash conveying system for a dust remover according to claim 1, wherein ash conveying gas in the ash conveying gas supply pipe is clean gas, and the fluidizing gas in the fluidized gas supply pipe is clean gas.

12. A cobweb-type anti-blocking fluidized ash conveying method for a dust remover, characterized in that the cobweb-type anti-blocking fluidized ash conveying method for a dust remover adopts the cobweb-type anti-blocking fluidized ash conveying system for a dust remover according to any one of claims 1 to 11, and the cobweb-type anti-blocking fluidized ash conveying method for a dust remover comprises the following steps:

Step a, a fluidization air supply valve on a fluidization air supply pipe is opened, and fluidization air enters the fluidizer and enters an ash bucket through a fluidization disc, so that ash in the ash bucket is in a fluidization suspension state;

and b, enabling ash in a fluidized suspension state to enter an ash conveying and supplying pipe through an ash outlet pipe, and collecting the ash into an ash bin through an ash conveying main pipe under the action of ash conveying gas in the ash conveying and supplying pipe.

13. The method according to claim 12, wherein in the step a, after the fluidizing gas in the fluidizer enters the warp-wise fluidization tube through the gas inlet grooves of the warp-wise fluidization tube, a part of the fluidizing gas enters the ash bucket through the gas outlet holes of the warp-wise fluidization tube, and another part of the fluidizing gas enters the weft-wise fluidization loop through the gas inlet holes of the weft-wise fluidization loop and enters the ash bucket through the gas outlet holes of the weft-wise fluidization loop.

14. The method according to claim 12, further comprising a step a1, before said step a, of activating a nitrogen gun to allow nitrogen in a nitrogen tank to enter a torrent injector through a jet pipe, and scattering ash in a hopper of the dust collector by said torrent injector.

15. The web-type anti-blocking fluidized ash conveying method for a dust remover according to claim 14, wherein the ash level in the ash bucket is detected by an upper limit ash level meter and a lower limit ash level meter on the dust remover, and when the upper limit ash level meter of the dust remover alarms, the step a1 is started, and when the lower limit ash level meter of the dust remover alarms, an ash discharge valve on the ash discharge pipe, a fluidized air supply valve on the fluidized air supply pipe and an ash conveying air supply valve on the ash conveying air supply pipe are sequentially closed.

16. The spider-web type anti-blocking fluidization ash conveying method for dust collectors according to claim 14, wherein in the step a1, when the pressure of the nitrogen entering the injection pipe reaches a standard value, the inner pipe of the torrent injector moves upwards under the pressure of the nitrogen, the lower outer ring plate of the inner pipe of the torrent injector is in sealing contact with the lower inner ring plate of the outer pipe of the torrent injector, the upper outer ring plate of the inner pipe of the torrent injector is in sealing contact with the first upper inner ring plate of the outer pipe of the torrent injector, and the nitrogen in the injection pipe is injected into the ash bucket after being accelerated through the inner throat of the inner pipe of the torrent injector.