CN201873337U - Dry-method dedusting dense-phase pneumatic transmission system of blast furnace - Google Patents
Dry-method dedusting dense-phase pneumatic transmission system of blast furnace Download PDFInfo
- Publication number
- CN201873337U CN201873337U CN2010206383796U CN201020638379U CN201873337U CN 201873337 U CN201873337 U CN 201873337U CN 2010206383796 U CN2010206383796 U CN 2010206383796U CN 201020638379 U CN201020638379 U CN 201020638379U CN 201873337 U CN201873337 U CN 201873337U
- Authority
- CN
- China
- Prior art keywords
- valve
- gas
- blast furnace
- ash
- phase pneumatic
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model discloses a dry-method dedusting dense-phase pneumatic transmission system of a blast furnace, which comprises a cone pump; an input pipeline is arranged at the inlet of the cone pump, an output pipeline is arranged at the outlet, the input pipeline and the output pipeline are respectively provided with an inlet valve and an outlet valve, a gas injection port is arranged at the upper device wall of the cone pump and is connected with a gas input pipe for transmission, an exhaust port is also arranged at the upper device wall of the cone pump and is connected with an exhaust pipe so as to be communicated with the outside of the pump; a gas-locking cindervalve is arranged in front of the inlet valve on the input pipeline, the gas-locking cindervalve is starlike, the outlet end of a shell of the gas-locking cindervalve is connected with the air inlet of the inlet valve by the input pipeline in a sealed way, and the inlet end of the shell is connected with the upstream input pipeline in a sealed way. The dry-method dedusting dense-phase pneumatic transmission system of a blast furnace can protect an isolation valve and an inlet dome valve from abrasion in acting process, thus solving the problem of abrasion of the input valve in the dense-phase pneumatic transmission system.
Description
Technical field
The utility model relates to blast furnace dry method dust ash air-transport system, especially blast furnace dry method dust ash dense phase pneumatic conveying system.
Background technology
Traditional blast furnace dry method dust ash air-transport system that is used for has two kinds: 1. dilute phase air-transport system, and its shortcoming is that air consumption is big, pipeline, pipe valve are easy to wear; Pipe valve service life is on average less than 2 months; 2. concentrated phase desgn of vessel type pnenmatic pump system, in this delivery system, unloading ash carries out under the band pressure condition, pressure can reach 0.25Mpa usually, in existing delivery system, the access valve that is provided with on the entrance pipe of concentrated phase cone pump will be subjected to being with the hydraulic fluid shar pounding for two push-pull valves or two ball valve in this class valve opening and closing process in use, valve plate wherein or valve seat be often by severe wear or wash away, and the mean life of valve that causes this position was less than 2 ~ 3 months.Like this, the use for dense phase pneumatic conveying system brings very big influence.
In addition, mostly the valve that is provided with on the outlet pipe of concentrated phase cone pump of the prior art is push-pull valve etc., in use also has more serious wear problem.Have again,, be provided with exhausr port, on exhausr port, be provided with bleeder line in order to make stove dirt ash successfully to enter cone pump.Described bleeder line of the prior art normally extends on the dust casing of cone pump upstream, with dust emissions to the dust casing of cone pump upstream, but, if band press to be carried dust, the pressure in the casing is greater than the pressure during the input dust in the face-pumping down, and gas exhaust duct just can not insert described casing, like this, the problem of exhaust has just become a difficult problem, and how to handle can safety, environmental protection and simple in structure easy to operate, also is problem to be solved in the utility model.
The utility model content
The purpose of this utility model is to improve the deficiencies in the prior art, provides a kind of can adaptive zone the pressure unload grey working environment, and can make the blast furnace dry method dust ash dense phase pneumatic conveying system that the wear problem of the inlet valve in the delivery system is resolved.
The further purpose of the utility model is to provide a kind of inlet dome valve in this delivery system valve plate and seal ring in opening and closing of making not have worn-down blast furnace dry method dust ash dense phase pneumatic conveying system.
But another purpose of the present utility model is to provide a kind of at high speed to discharge gas in the cone pump makes dust to inject rapidly and the blast furnace dry method dust ash dense phase pneumatic conveying system of high-efficiency environment friendly.
The purpose of this utility model is achieved in that
A kind of blast furnace dry method dust ash dense phase pneumatic conveying system, comprise a cone pump, entrance at this cone pump is provided with chargine line, the exit is provided with delivery conduit, on this chargine line and delivery conduit, be respectively equipped with inlet valve and outlet valve, on the wall of the top of described cone pump, be provided with gas injection port, connect on it to carry and use the gas input pipe, on the wall of the top of described cone pump, also be provided with exhausr port, connect bleeder line on it and be communicated with outward with pump; Wherein, be provided with a lock gas unloading valve in the front of this chargine line upper inlet valve, this lock gas unloading valve is a star-shaped ash unloading valve, and the exit end of its housing connects the admission port of described inlet valve hermetically by chargine line, and its arrival end connects the chargine line of upstream hermetically.
Described inlet valve that is provided with on described chargine line and/or outlet valve can be dome valve or push-pull valve, and valve plate wherein connects driver train.Realize the opening and closing of this valve by driver train.
An end of perforate bonded assembly one freeing pipe on the bulkhead of the top of described cone pump, its other end are connected on the described delivery conduit in below of described cone pump, and the port of this freeing pipe is connected on the delivery conduit in described outlet valve downstream.
In addition, a dome valve can also be set on described freeing pipe, using dome valve also is in order to reduce the wearing and tearing of seal ring.
Further, described dome valve preferably uses gas-flow closure dome valve of the prior art, the valve plate and the seal ring between the valve seat of this dome valve are arranged on the valve seat, on valve seat and be provided with the gas injection passage and connect the seal ring annular groove, the gas injection passage connects gas injection device, on described gas injection passage, connect air valve, connect open-close on-off on this air valve.By gas injection in closure gasket groove, make seal ring expansion evagination and valve plate constitute hermetically-sealed construction, and stop gas injection, then contract in the seal ring, constitute the gap with valve plate.During use, when dome valve is in closed condition, gas injection device continues gas injection, guarantee to seal between valve plate and the valve seat, in the time will opening dome valve, stop gas injection, valve plate rotates under the driving of its actuating device, when closing once more on the dome valve, when valve plate moves to off position, restart gas injection.
At the keying link gear that the described air valve of bonded assembly on the gas injection passage is set on the driver train of described dome valve, it can be one and described air valve start-stop system bonded assembly triggering part, it is arranged on the position such on the frame: when the described valve plate that the movement parts on the described actuating device moves to its drive is closed on the position of described pipeline, promptly touch the triggering part of opening described air valve and realize inflation, when actuating device drove this valve plate and lifts off a seat, described movement parts broke away from described triggering part and stops inflation.
Because this blast furnace dry method dust ash dense phase pneumatic conveying system is that stove dirt ash is filled cone pump by chargine line, close the valve on the chargine line then, open the valve on the escape route, and in cone pump, charge into delivering gas by air delivering pipeline, stove dirt in pump ash is extruded cone pump, shut the valve on the escape route then, open the valve on the chargine line.Above-mentioned steps constantly has rhythm and pace of moving things ground to repeat, thus, the valve that is provided with on the chargine line of cone pump and escape route is all used aforesaid gas-flow closure dome valve, by co-operative control to the driver train of two dome valves, alternately open and close the feeding operation at intermittence of the pump of just can realizing easily storing in a warehouse.
Described lock gas unloading valve can be gas injection sealed type star-shaped ash unloading valve.Gas injection sealed type star-shaped ash unloading valve also is existing valve, so do not give unnecessary details at this.
Freeing pipe is set like this, and the gas of discharging from cone pump directly is discharged in the delivery conduit of cone pump, because the pressure in the chargine line is lower, can not influence exhaust fully, simultaneously, along with the dust that exhaust is taken out of is imported in delivery conduit, can bring in the lump in the ash bucket in downstream.I.e. safety, the environmental protection again of exhaust structure that cone pump is such, structure is very simple simultaneously, and is also very convenient in the operation.
The described freeing pipe of perforate bonded assembly on the bulkhead of the top of described cone pump, it is connected on the described delivery conduit in below of described cone pump, and the port of this freeing pipe is connected on the delivery conduit in described outlet valve downstream.
In order to guarantee that the fluid pressure in the pipeline of lock gas unloading valve back reduces, minimizing is for pipeline and the wherein wearing and tearing of valve, guarantee accumulation height and the described rotor in the described lock gas unloading valve and the gap between the described housing of dust in the dedusting ash casing of described chargine line top, so, in the described dedusting ash casing that described chargine line upstream is provided with the dust position transduser is set, this dust position transduser apart from the height of ash hole and the gap between described lock gas unloading valve rotor and the housing is: make that the pressure differential deltap P of described unloading valve both sides is below the 0.5bar.Like this, flowing through the stove dirt of locking the gas unloading valve in dry method dust ash air-transport system has not has not just worn and torn basically for the back inlet valve.
Blast furnace dry method dust that the utility model provides ash dense phase pneumatic conveying system is by being provided with lock gas unloading valve between disconnecting valve on the transfer line between on the chargine line of dust collector ash hopper and cone pump and the inlet dome valve, make in the inlet valve switching motion process on chargine line that band presses dust to pass through, can solve this valve so well and in periodic frequent movement, be subjected to pressing the washing away of dust logistics by quick-wearing Problem of Failure very; In addition, to such an extent as to by on the chargine line escape route of cone pump, using the gas-flow closure dome valve, this dome valve gas-flow closure characteristic can guarantee the service life of valve thus so that the valve plate of dome valve is accomplished zero friction in frequent keying campaign.Have, this air-transport system makes native system environmental protection more for the improvement of freeing pipe again.
The utility model is described in further detail below by accompanying drawing.
Description of drawings
The structural representation sketch of the blast furnace dry method dust ash dense phase pneumatic conveying system that Fig. 1 provides for the utility model.
The structural representation of the transfer line of dust collector ash hopper below and following cone pump part in the blast furnace dry method dust ash dense phase pneumatic conveying system that Fig. 2 provides for the utility model.
Fig. 3 is the plan structure scheme drawing of Fig. 2.
The specific embodiment
As shown in Figure 1 to Figure 3, the described air-transport system of present embodiment is to utilize cone pump concentrated phase malleation air-transport system to be delivered to big grey storehouse the blast furnace ash that bag dust collector is collected.
This system installs ash conveying device to come collection material under dust collector ash hopper, and by delivery duct mass transport is arrived big grey storehouse.
This air-transport system comprises a cone pump 5, is provided with chargine line in the entrance, upper end of this cone pump 5, and the exit, lower end is provided with delivery conduit, is respectively equipped with inlet valve 4 and outlet valve 6 on this chargine line 0 and delivery conduit 7.
The top of chargine line 0 connects dedusting ash casing 1, and the blast furnace dry method dust ash falls into this dedusting ash casing 1, in the exit, lower end of this casing 1 disconnecting valve 2 is set, and it can be ball valve or push-pull valve.The exit end of disconnecting valve 2 promptly connects the described chargine line of cone pump, be provided with a lock gas unloading valve 3 in the upstream of this chargine line 0 upper inlet valve 4, this lock gas unloading valve 3 is a star-shaped ash unloading valve, the exit end of its housing connects the admission port of described inlet valve hermetically by chargine line 0, its arrival end connects the disconnecting valve 2 of upstream by chargine line 0.
On the wall of the top of cone pump 5, be provided with gas injection port 51, connect on it and carry usefulness gas input pipe 9, be the nitrogen input pipe at this; This input pipe connects the supplying nitrogen source of the gas, also is provided with exhausr port 52 on the wall of the top of cone pump 5, connects bleeder line 8 on it and is communicated with outward with pump.As shown in Figure 2, the lower end of preferred described freeing pipe 8 is connected on the below delivery conduit 7 of described cone pump 5, and the port of this freeing pipe 8 is connected on the delivery conduit 7 in described outlet valve 6 downstreams.On bleeder line 8, be provided with a valve 81, in order to prevent that when pumping dust, dust returns the pump from freeing pipe.This valve 81 also can be a dome valve.Use dome valve can reduce the wearing and tearing of seal ring.
In order to guarantee unobstructed blanking, need exhaust during cone pump 5 blankings, usually exhaust is to be discharged to 1 li of top dedusting ash casing, still, and when top ash bucket is band pressure, can't directly be discharged in the ash bucket, so, be discharged in the delivery pipe because delivery pipe and receiving bin together with, here there is not difference of pressure, easy to exhaust.
The inlet valve 4 and the outlet valve 6 that are provided with on this chargine line 0 and the delivery conduit 7 are the gas-flow closure dome valve in the present embodiment.
Described dome valve is the gas-flow closure dome valve, the valve plate and the seal ring between the valve seat of this dome valve are arranged on the valve seat, and on valve seat and be provided with the gas injection passage and connect the seal ring annular groove, the gas injection passage connects gas injection device, on described gas injection passage, connect air valve, connect open-close on-off on this air valve.
The valve plate of this dome valve connects a piston drive mechanism, at the keying link gear that the described air valve of bonded assembly on the gas injection passage is set on the driver train of described dome valve, it is arranged on such position: when the described valve plate that the movement parts on the described actuating device moves to its drive is closed on the position of described pipeline, promptly touch the triggering part of opening described air valve and realize inflation, when actuating device drove this valve plate and lifts off a seat, described movement parts broke away from described triggering part and stops inflation.
Lock gas unloading valve 3 is a star-shaped ash unloading valve, described star-shaped ash unloading valve is a prior art, it comprises housing and is located at rotor in this housing rotationally, on described rotor, be provided with some blades, leave the gap between blade and the housing, the axle head of rotor shaft extension outside housing that connects described rotor connects a driver train M(as shown in Figure 1), the rotation of rotor makes the band hydraulic fluid flow through described chargine line 0, enters cone pump 5.Have, described lock gas unloading valve 3 is gas injection sealed type star-shaped ash unloading valve again, feeds nitrogen during use and seals.Its hermetically-sealed construction is a prior art.In operation process,, make stove dirt ash enter cone pump 5 by described inlet valve 4 continuously along with driver train M drives rotor rotation.
As shown in Figure 3, be provided with an elastic seal ring on this valve seat 40, this elastic seal ring forms an air flue with this valve seat that contacts with it, and this air flue is provided with gas port, connects air valve; The opening/shutting controller of this air valve and the interlock of the actuating device of described valve plate, the structure of this air flue is: when described valve plate 41 falls within on this valve seat 40 under actuating device 411 drives, give described air flue inflation by air valve, this elastic seal ring expands and gap between sealing valve plate 41 and the valve seat 40, when driving these valve plates 41, actuating device 411 lifts off a seat when 40, inflation in the described air flue is laid down, and makes described elastic seal ring recover original form and breaks away from and the contacting of valve plate.
The described special gas-flow closure design of dome valve has been avoided the friction of valve spool and seal ring fully when guaranteeing valve seal, increase the life-span of valve.
This air-transport system is work like this: at first, the outlet valve 6 of cone pump is closed, inlet valve 4 is opened, by chargine line 0, dust in the dust collector ash hopper 1 is imported in the cone pump 5 continuously by lock gas unloading valve 3, after the amount of dust in cone pump 5 reaches specified amount, inlet valve 4 is closed, outlet valve 6 is opened, carry the valve open on the usefulness gas input pipe 9 simultaneously, in cone pump 5, inject the nitrogen of certain pressure, the dust in the pump is discharged and enter delivery conduit 7, import big grey storehouse (not shown) then.This air-transport system is exactly to carry dust by mode intermittently.
When needs stop to import dust in cone pump 5, the lock gas unloading valve 3 that stops earlier, and then close inlet valve 4.When recovering the input dust, earlier inlet valve 4 is opened, started the driver train of lock gas unloading valve 3 then.Like this, owing to be provided with lock gas unloading valve, the keying of inlet valve 4 all is not have to carry out under the situation of material in pipeline, and therefore, the wear pattern of inlet valve 4 just can thoroughly solve.
The nitrogen that is used for mass transport in the delivery conduit 7 of cone pump can install by this and be discharged to atmosphere after dust exhaustor that bleeder line in big grey storehouse, back is provided with filters.Simultaneously big Hui Cang top is provided with the safe operation that the vacuum pressure Dump valve guarantees system.
The path of flowing through of dust in this ash-transmission system (or being called defeated grey technological process) is as follows:
Dust passes through in proper order: dust collector ash hopper 1 → disconnecting valve 2 → lock gas unloading valve 3 → inlet dome valve 4 → cone pump 5 → outlet dome valve 6 → ash handing pipeline 7 → termination rack → big grey storehouse.
In actual applications, some cover ash-transmission systems can be set, it is arranged in parallel, and cone pump wherein all is installed on the transfer line.
The ash-transmission system operation can be: disconnecting valve 2 often leaves, and only closes buffer action when maintenance.Dust collector ash hopper 1 below is provided with and starts defeated grey level-sensing device, when control system detected defeated ash and starts the material level signal, the priority of carrying according to system started in row's cone pump earlier, and cone pump 5 inlet dome valves 4 are opened, after certain time-delay, open lock gas unloading valve 3 and unload ash,, close locking gas unloading valve 3 earlier when unloading after the ash time arrives, close cone pump inlet dome valve 4 then, start delivery system, promptly in cone pump, import nitrogen, the blast furnace dust is delivered to big grey storehouse.As long as a pump delivery is arranged on a transfer line, other pump just is in halted state, and is chain each other between each described valve.Native system unloads ash separately to each dust exhaustor casing and carries.Owing to have coal gas to exist in the system, adopt compressed nitrogen as carrying source of the gas so carry.
For guaranteeing that blast furnace gas does not leak to transmission pump, lock gas discharge valve 3 is set between disconnecting valve 2 and cone pump, and guarantees that each ash bucket cone has certain safety ash amount, isolates blast furnace gas and pressure.As shown in Figure 1, three limit sensors LS are set in dedusting ash casing 1, the limit sensors or the stuff level switch LS that are arranged on the lower box awl section guarantee minimum amount of dust in the dedusting ash casing, promptly the safety ash is measured, described rotor in the described lock gas unloading valve 3 and the gap between the described housing and set certain ash amount in the ash bucket centrum, can so that the pressure in the pipeline of described unloading valve back below 0.5bar.
In native system, lock gas unloading valve 3 is set on chargine line 0, inlet valve 4 uses the dome valve of gas-flow closure, and the occasion of unloading ash is pressed in the design of combinations thereof better adaptive zone.
The air-transport system that the utility model provides is suitable for the conveying of blast furnace gravitational dust collection ash, dry method dust ash.
As shown in Figure 1, on the chargine line 0 of cone pump 5 and delivery conduit 7 and nitrogen transfer line 9, all be provided with pressure switch PS, on nitrogen transfer line 9, be provided with flow-through orifice FO, also be provided with pneumatic valve PV and hand valve HV.
Claims (8)
1. blast furnace dry method dust ash dense phase pneumatic conveying system, comprise a cone pump (5), be provided with chargine line (0) in the entrance of this cone pump (5), the exit is provided with delivery conduit (7), on this chargine line (0) and delivery conduit (7), be respectively equipped with inlet valve (4) and outlet valve (6), on the wall of the top of described cone pump, be provided with gas injection port (51), connect on it and carry usefulness gas input pipe (9), on the wall of the top of described cone pump, also be provided with exhausr port (52), connect bleeder line (8) on it and be communicated with outward with pump; It is characterized in that: be provided with a lock gas unloading valve (3) in the front of the above inlet valve of this chargine line (0) (4), this lock gas unloading valve is a star-shaped ash unloading valve, the exit end of its housing connects the admission port of described inlet valve hermetically by chargine line, its arrival end connects the described chargine line of upstream hermetically.
2. blast furnace dry method dust ash dense phase pneumatic conveying system according to claim 1, it is characterized in that: described inlet valve that is provided with on described chargine line and/or outlet valve are dome valve or push-pull valve, and valve plate wherein connects the opening and closing driver train of realizing this valve.
3. blast furnace dry method dust ash dense phase pneumatic conveying system according to claim 1, it is characterized in that: an end of perforate bonded assembly one freeing pipe on the bulkhead of the top of described cone pump, its other end is connected on the described delivery conduit in below of described cone pump, and the port of this freeing pipe is connected on the delivery conduit in described outlet valve downstream.
4. blast furnace dry method dust ash dense phase pneumatic conveying system according to claim 3 is characterized in that: a dome valve is set on described freeing pipe.
5. according to claim 2 or 4 described blast furnace dry method dust ash dense phase pneumatic conveying systems, it is characterized in that: described dome valve is the gas-flow closure dome valve, the valve plate and the seal ring between the valve seat of this dome valve are arranged on the valve seat, on valve seat and be provided with the gas injection passage and connect the seal ring annular groove, the gas injection passage connects gas injection device, on described gas injection passage, connect air valve, connect open-close on-off on this air valve.
6. blast furnace dry method dust ash dense phase pneumatic conveying system according to claim 5, it is characterized in that: at the keying link gear that the described air valve of bonded assembly on the gas injection passage is set on the driver train of described dome valve, it is one and described air valve start-stop system bonded assembly triggering part, it is arranged on such position: when the described valve plate that the movement parts on the described actuating device moves to its drive is closed on the position of described pipeline, promptly touch the triggering part of opening described air valve and realize inflation, when actuating device drove this valve plate and lifts off a seat, described movement parts broke away from described triggering part and stops inflation.
7. blast furnace dry method dust ash dense phase pneumatic conveying system according to claim 1, it is characterized in that: described lock gas unloading valve is a gas injection sealed type star-shaped ash unloading valve.
8. according to claim 1 or 7 described blast furnace dry method dust ash dense phase pneumatic conveying systems, it is characterized in that: in the dedusting ash casing that described chargine line upstream is provided with the dust position transduser is set, this dust position transduser apart from the height of ash hole and the gap between described lock gas unloading valve rotor and the housing is: make that the pressure differential deltap P of described unloading valve both sides is below the 0.5bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206383796U CN201873337U (en) | 2010-12-02 | 2010-12-02 | Dry-method dedusting dense-phase pneumatic transmission system of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206383796U CN201873337U (en) | 2010-12-02 | 2010-12-02 | Dry-method dedusting dense-phase pneumatic transmission system of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201873337U true CN201873337U (en) | 2011-06-22 |
Family
ID=44161266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206383796U Expired - Fee Related CN201873337U (en) | 2010-12-02 | 2010-12-02 | Dry-method dedusting dense-phase pneumatic transmission system of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201873337U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252514A (en) * | 2011-07-14 | 2011-11-23 | 深圳市圳驰科技有限公司 | Coal ash powder material recovery system and method for dry mixed mortar production |
| CN102766712A (en) * | 2012-08-15 | 2012-11-07 | 济钢集团有限公司 | Differential-pressure-free dust discharging device of blast furnace gravity dust collector |
| CN103771139A (en) * | 2014-02-11 | 2014-05-07 | 江苏沙钢集团有限公司 | Dense-phase pneumatic conveying system and technology for continuous pulverized coal feeding of blast furnace |
| CN107119162A (en) * | 2017-05-25 | 2017-09-01 | 邢台钢铁有限责任公司 | A kind of blast-furnace gas dry dedusting ash conveying device and method |
-
2010
- 2010-12-02 CN CN2010206383796U patent/CN201873337U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252514A (en) * | 2011-07-14 | 2011-11-23 | 深圳市圳驰科技有限公司 | Coal ash powder material recovery system and method for dry mixed mortar production |
| CN102766712A (en) * | 2012-08-15 | 2012-11-07 | 济钢集团有限公司 | Differential-pressure-free dust discharging device of blast furnace gravity dust collector |
| CN102766712B (en) * | 2012-08-15 | 2014-12-03 | 济钢集团有限公司 | Differential-pressure-free dust discharging device of blast furnace gravity dust collector |
| CN103771139A (en) * | 2014-02-11 | 2014-05-07 | 江苏沙钢集团有限公司 | Dense-phase pneumatic conveying system and technology for continuous pulverized coal feeding of blast furnace |
| CN103771139B (en) * | 2014-02-11 | 2016-01-06 | 江苏沙钢集团有限公司 | A kind of blast-furnace coal powder continuous-feeding dense phase pneumatic conveying system and technique |
| CN107119162A (en) * | 2017-05-25 | 2017-09-01 | 邢台钢铁有限责任公司 | A kind of blast-furnace gas dry dedusting ash conveying device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201873337U (en) | Dry-method dedusting dense-phase pneumatic transmission system of blast furnace | |
| CN201721974U (en) | Micro-positive low pressure continuous pneumatic convey device | |
| CN203428534U (en) | Blast furnace dry dedusting dense phase pneumatic conveying system | |
| CN212417393U (en) | Pulse dust removal auger material cleaning device | |
| CN105417971A (en) | Double-sealed discharge method and device for lime shaft kiln | |
| CN201125092Y (en) | Short stage dust conveying facility for dry type dust removing equipment | |
| CN207226492U (en) | A kind of close mutually defeated grey process system of novel positive pressure | |
| CN201170335Y (en) | Light ceramic gate valve with purging device | |
| CN208487221U (en) | A kind of pre-shutdown valve suitable for air-transport system | |
| KR102051166B1 (en) | Method for transporting impurities in pressurized fluidized furnace system | |
| CN205602703U (en) | Pneumatolytic dry dust conveying equipment in air input intelligent regulation bottom | |
| CN201462015U (en) | Wear-resistant ceramic pneumatic side slide valve | |
| CN212387310U (en) | Intelligent air supplement device | |
| CN209685709U (en) | A kind of raw material fine coal transport column for gasification furnace high-pressure chamber plugs changing device | |
| CN205223020U (en) | Double containment discharge apparatus for lime shaft kiln | |
| CN221587250U (en) | Back-blowing blocking removing device for ash conveying pipeline of dust remover and dust remover | |
| CN202704567U (en) | Electric dust removal and ash conveying device of three-waste furnace | |
| CN2156926Y (en) | Large-chambered blowback cloth-bag dust-collector | |
| CN206449653U (en) | A kind of flying ash of garbage cremator collecting and conveying system | |
| KR100938865B1 (en) | Knife gate valve | |
| CN217675548U (en) | Wear-resistant conveying pump | |
| CN201737474U (en) | Gas delivery dust discharge valve | |
| CN203686310U (en) | Anti-blocking type dome valve air control device | |
| CN103742700B (en) | Antifouling type dome valve air-control device | |
| CN208070832U (en) | Negative pressure type high temperature mill material transfer valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20111202 |