CN201158550Y - Apparatus for transporting powder solid to the transportation line and blast furnace provided with the same - Google Patents
Apparatus for transporting powder solid to the transportation line and blast furnace provided with the same Download PDFInfo
- Publication number
- CN201158550Y CN201158550Y CNU2007201548165U CN200720154816U CN201158550Y CN 201158550 Y CN201158550 Y CN 201158550Y CN U2007201548165 U CNU2007201548165 U CN U2007201548165U CN 200720154816 U CN200720154816 U CN 200720154816U CN 201158550 Y CN201158550 Y CN 201158550Y
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- Prior art keywords
- hopper
- delivery conduit
- circuit
- fluidization
- conveyor hopper
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- Expired - Lifetime
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- 239000007787 solid Substances 0.000 title claims description 58
- 239000000843 powder Substances 0.000 title claims description 15
- 238000005243 fluidization Methods 0.000 claims abstract description 58
- 230000000750 progressive effect Effects 0.000 claims description 9
- 238000007599 discharging Methods 0.000 abstract description 7
- 239000011343 solid material Substances 0.000 abstract 4
- 239000007789 gas Substances 0.000 description 43
- 238000005303 weighing Methods 0.000 description 7
- 230000005484 gravity Effects 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000002817 coal dust Substances 0.000 description 4
- 230000014509 gene expression Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000012159 carrier gas Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013270 controlled release Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Abstract
The utility model discloses a device for transferring powered solid materials to a conveying line, and a blast furnace equipped with the device. The device comprises a transferring bunker (14) provided with an upper gate (18) and a lower gate (20) and capable of filling the powered solid materials in a storage container (10) via the upper gate (18) and discharging the powered solid materials via the lower gate (20). The device also comprises a conveying bunker (16), which has an upper feed port (30) arranged on the upper part of the conveying bunker (16), and a lower discharge port (32) arranged on the lower part of the conveying bunker (16) and used for connecting the conveying bunker (16) with a pneumatic conveying line (12). The transferring bunker (14) and the conveying bunker (16) are arranged side by side. The transferring bunker (14) comprises a fluidization chamber (52) with a fluidized bottom for fluidizing the powered solid materials in the fluidization chamber, and the fluidization chamber (52) has an outlet port with the lower gate (20).
Description
Technical field
The utility model relates to a kind of blast furnace that pulverulent solids is supplied to the device of pneumatic conveying circuit and this device is housed of being used for.
Background technology
When supplying to pulverulent solids (such as the coal dust end) the pneumatic conveying circuit from storage container, according to the situation of technical field as can be known, two kinds of different introducing methods have been adopted.
In first method, two intermediate receptacles vertically and one on another, be positioned at below the storage container.The top intermediate receptacle is as lock chamber (lock chamber).Periodically carry out following circulation: (1) is filled into the top intermediate receptacle from storage container with pulverulent solids under ambient pressure; (2) close the top intermediate receptacle with respect to storage container; (3) the top intermediate receptacle is pressurizeed; (4) by the gravity charging (gravity feed) that enters into the bottom intermediate receptacle top intermediate receptacle of pressurization is turned; (5) close the top intermediate receptacle with respect to the bottom intermediate receptacle; And reduce pressure to the top intermediate receptacle (6).The bottom intermediate receptacle is as flood chamber, its permanently under pressure, and pulverulent solids is fed to the pneumatic conveying circuit continuously from this bottom intermediate receptacle.
In the second approach, two similar intermediate receptacles are arranged in the storage container below side by side and abreast.These intermediate receptacles are not only as lock chamber but also as flood chamber.They all repeat identical circulation, but stagger in time, i.e. phase deviation, thereby in any given moment, pulverulent solids can both be blown into the pneumatic conveying circuit continuously from one of two containers, and meanwhile, another intermediate receptacle is recharged from storage container.
When pulverulent solids being injected into the more relatively delivery conduit of quantity, mainly use the vertically arranged intermediate receptacle that is connected in series.When only supplying a strip transmission line road or several at the most strip transmission lines road, the intermediate receptacle that is connected in parallel that main usage level is arranged side by side.
All there is inferior position in the intermediate receptacle that is connected in parallel and is connected in series.
For example, the inferior position of the intermediate receptacle of install in series is:
The height of-structure is quite high, and what need remember is above two vertically arranged intermediate receptacles, to also have bigger storage container.
The diameter of the connection pipe circuit between the following outlet of-top intermediate receptacle and the upper inlet of bottom intermediate receptacle (pipe down) is bigger.This major diameter is essential, makes to induce pulverulent solids to flow to bottom container from upper container.But this major diameter causes two outlet of container bigger and expensive to the stop valve installation of entrance.The stop valve installation that is to be further noted that lock chamber exit, top is by the powder solid impact, and opening of valve becomes more difficult along with the increase of stop valve installation diameter proportionally.
The interference that-experience from supply operation is learnt is more frequent relatively.This is because pressurized operation makes powder solid compactness (compact) in the lock chamber, thereby although outlet diameter is big and used releasing device, delay, the interruption of gravity fill process may take place or stops.
The inferior position of install in parallel is:
-each intermediate receptacle must be provided with complete unclamping and transfer system, and is solid to form-the stream compound, and this compound is transported in the delivery conduit.
-can only realize originally with the one-tenth of costliness, pulverulent solids is introduced many strip transmission lines road.
-the outgoing quality flow velocity changes when a container changes to another container at every turn, and experience shows that this situation often takes place.These variations can only be suppressed by difficulty, expensive mode, and suppress not exclusively.
The utility model content
The purpose of this utility model is to design a kind of simple mechanism that is used for pulverulent solids is supplied to the pneumatic conveying circuit, and this device has been eliminated above-mentioned inferior position at least in part.This purpose is by realizing with lower device that the utility model provides.
Proposed be used for the device that pulverulent solids is fed to the pneumatic conveying circuit continuously from storage container comprised shifted hopper and conveyor hopper.Shift hopper and constitute lock chamber, utilize by the top upper lock gate from the pulverulent solids of storage container and can fill this lock chamber and by bottom gate this lock chamber of can turning with top gate and bottom gate.Conveyor hopper constitutes the flood chamber with upper entrance and bottom discharge orifice, and this upper entrance is somebody's turn to do by filling from the pulverulent solids that shifts hopper, and the bottom discharge orifice is used for pulverulent solids is fed to the pneumatic conveying circuit continuously.Two hoppers are install in parallel abreast.
According to the utility model, shift hopper and comprise fluidization chamber with fluidization bottom, be used for of the fluidization of powder solid in the fluidization chamber, this fluidization chamber has the outlet that is provided with the bottom gate.Further according to the utility model, between the upper entrance of bottom gate that shifts hopper and conveyor hopper, be furnished with pneumatic middle delivery conduit, by means of this pneumatic middle delivery conduit, pulverulent solids pneumatically can be transported in the conveyor hopper from shift hopper.
The beneficial effects of the utility model are: by means of have feedway in the middle of fluidization equipment pneumatic with pulverulent solids from shift the hopper pneumatic conveying to conveyor hopper avoided on equipment expense and in the vulnerability of pressurization gravity charging aspect breaking.Gu-stream compound is continuously supplied one or more delivery conduit from shifting hopper (it is permanently pressurizeed).Only need one to unclamp and output unit, and do not have the variation of the output flow velocity that causes by the conversion between the container.Should be noted that,, only need to increase the pressure that shifts in the hopper very littlely, and also be few the consumption of final increase in the gravity charging in the gas-pressurized consumption for the pneumatic intermediate transfer between two adjacent intermediate receptacles.
In a preferred embodiment, conveyor hopper also comprises the fluidization chamber with fluidization bottom, is used for the fluidization of pulverulent solids in the fluidization chamber.In this embodiment, the bottom delivery port is connected to the pneumatic conveying circuit with the fluidization chamber.As shown in experience, the integrally formed fluidization chamber of utilization and conveyor hopper provides the highest efficient and homogeneous fluidization.
Advantageously, be used for first gas supply unit that fluidizing gas is fed to the fluidization chamber of conveyor hopper comprise can progressive adjusting barometric damper, this barometric damper is controlled by being used for the gas flow controller that progressive adjusting fluidizing gas injects.Air-flow that can progressive adjusting injects and allows to carrying out optimal compensation because gas-pressurized leaks the powder density fluctuation of the delivery conduit that causes, especially when the lower filling extent of conveyor hopper (level).In simple relatively and the design of cost actv., be used for second gas supply unit that fluidizing gas is fed to the fluidization chamber of transfer hopper is had the branch of a plurality of parallel connections, each branch all has Lavalle (Laval) nozzle and corresponding stop valve.Second feeding unit that is used for fluidizing gas can comprise for example branch of three parallel connections, and each branch all has shutoff valve and Laval nozzle.So, the Laval nozzle in first branch should allow that the Laval nozzle in 1/7th, second branch of required maximum airflow allows 2/7ths, and the Laval nozzle in the 3rd branch allows 4/7ths.In this way, from maximum airflow 1/7th to 7/7ths of maximum airflow, can regulate flow velocity with six equal strides.Therefore, realized the approaching continuous adjusting of fluidizing gas flow velocity, and need not can progressive regulating control by more complicated.
For two adjacent intermediate receptacles, can advantageously comprise the common apparatus that is used for the common apparatus that pressure keeps and is used for pressure release.
Preferably, special-purpose gaseous tension release circuit is connected in conveyor hopper.In this gaseous tension release circuit, be provided with the pressure release control cock, wherein, between conveyor hopper and pressure release control cock, be provided with the filter that is used to keep pulverulent solids.Filtration for powdery solid granules allows to discharge use standard form control cock in the circuit at the gaseous tension that is exclusively used in conveyor hopper.
Special-purpose gaseous tension discharges circuit and can also utilize and be arranged at the pressure release control cock in the special gas pressure release circuit and be connected in the transfer hopper.Preferably, be exclusively used in the release circuit that shifts hopper and lead in (promptly being discharged into) storage container, discharge the pulverulent solids that circuit overflows so that allow to reclaim by gaseous tension.
Preferably, be provided with and be used for the common apparatus that two hopper pressure are kept.Being used for the common apparatus that pressure keeps for example can comprise:
-common gas supply circuit;
Pressure-modulation valve in the-common gas supply circuit;
-utilize first shutoff valve and lead to and shift first of hopper and connect; And
-utilize second shutoff valve and lead to second of conveyor hopper and connect.
Owing to can switch to another from an intermediate receptacle by means of shutoff valve, be used for the equipment that pressure is kept so only need to provide one group.If begin not have material to transfer to the transfer hopper, the pressure-regulating device that then shifts in the hopper is kept essential additonal pressure, solid-stream compound is optimally outputed in the conveyor hopper guaranteeing.During having pulverulent solids to transfer to the pneumatic intermediate transfer of conveyor hopper at the beginning, pressure-modulation valve is kept additonal pressure essential in the conveyor hopper, and the pressure release control cock that is exclusively used in conveyor hopper is simultaneously discharged too much gas from conveyor hopper.
As will be appreciated, device according to the present invention is particularly useful for for example coal dust end injected system of blast furnace.
Description of drawings
Now then by means of example preferred embodiment of the present utility model is described with reference to the accompanying drawings, in the accompanying drawing:
Fig. 1 shows the schematic representation of apparatus that is used for pulverulent solids is supplied to from storage container the pneumatic conveying circuit according to of the present utility model.
The specific embodiment
In Fig. 1, reference number 10 expression storage containers store pulverulent solids in this storage container, for example the coal dust end.This pulverulent solids is blown into (other delivery conduit is not shown) at least one pneumatic conveying circuit 12 continuously.It is for example in the solid fuel injected system (not shown) on blast furnace that the typical case at pneumatic conveying coal dust end uses.
For this purpose the device of Ti Chuing comprise be arranged in parallel side by side and transfer hopper 14 on same substantially horizontal surface and conveyor hopper 16, shift hopper 14 and be arranged in storage container 10 belows.
Shift hopper 14 as lock chamber, have top gate 18, discharging cone 19 and bottom gate 20, thereby can utilize the pulverulent solids that comes from storage container 14 by top gate 18 to fill to shift hopper 14, and this shifts hopper by discharging cone 19 and bottom gate 20 turned letters.Top gate 18 advantageously comprises: flat slide valve (flat slide valve) 22, and it is as holding device, and this holding device is used for the pulverulent solids of storage container 10; And ball valve 24, its below that is arranged on flat slide valve is to provide gas tight seal.Bottom gate 20 comprises shutoff valve 21, and it is for providing highly bubble-tight ball valve.Reference number 28 expressions first weighing unit is used for definite filling extent that shifts hopper 14.
Shift hopper 14 in order to pressurize, the additional gas supply circuit 60 of being furnished with shutoff valve 62 is connected in the discharging cone 19 that shifts hopper 14.
For two hoppers 14 and 16 provide common pressure attending device.The pressure attending device comprises common gas supply circuit 70, and this common gas supply circuit has control cock 72 and has first shutoff valve 74 and lead to and shifts first of hopper 14 and connect 73 and be connected 75 with having second shutoff valve 76 and leading to second of conveyor hopper 16.
On the other hand, each hopper 14,16 all has special-purpose gas release device.The gas release device that shifts hopper 14 has the gaseous tension release circuit 83 of band control cock 84.In order to reclaim pulverulent solids, gaseous tension discharges circuit 83 and preferably leads in the storage container 10.The pressure relief device of conveyor hopper 16 comprises that the gaseous tension of being with control cock 86 discharges circuit 85.The bag type filter 88 of pressurization discharges in the circuit 85 at gaseous tension and is connected between conveyor hopper 16 and the control cock 86, is used to keep here pulverulent solids.By means of bag type filter 88, can use the barometric damper 86 of type, they needn't the anti-wearing and tearing that caused by pulverulent solids.The downstream of control cock 86 is provided with shutoff valve 89.
Below, the operation of the device that schematically shows among Fig. 1 is described.
Be used for treating to be transported to the pneumatic conveying of the dusty material of conveyor hopper 16 from storage container as the transfer hopper 14 of lock chamber.This loop jump process starts from the common filling from 10 pairs of transfer hoppers 14 of storage container under ambient pressure.For this reason, ball valve 24 and then flat slide valve 22 are opened.Material to be transferred flows to from storage container 10 by gravity and shifts the hopper 14.When weighing unit 28 had been determined to have reached maximum filling extent in the transfer hopper 14, flat slide valve 22 and then ball valve 24 were closed.The control cock 84 that gaseous tension discharges the first front opening in the circuit 83 is closed now.Then by opening shutoff valve 62 to shifting hopper 14 pressurizations.When pressure sensor 92 was determined to have reached injection pressure, shutoff valve 62 was closed once more.
In case reach minimum filling extent in the conveyor hopper 16, just utilize pneumatic middle delivery conduit 50.For this reason, the given selection of the shutoff valve 561,562,563 of second gas supply unit 54, promptly shutoff valve 561 is opened, and then shifts the bottom gate 20 of hopper 14, and shutoff valve 21 is opened more precisely.In fluidization chamber 52, inject fluidizing gas from the below, and make the pulverulent solids fluidization with known manner.To consolidate-flow compound by delivery conduit 50 in the middle of pneumatic is transported in the conveyor hopper 16 by upper entrance 30.By means of control cock 72, during intermediate transfer, the amount of pressure that shifts in the hopper 14 keeps constant.Recharge operating period at this, shutoff valve 76 is closed, and shutoff valve 74 is opened.Controller component 96 adjustment pressures are kept control cock 72, as the function of the observed reading of being returned by first pressure sensor 92.
Reached minimum filling extent in case shift in the hopper 14, shifted the bottom gate valve 20 of hopper 14 and just close.Delivery conduit 50 is rinsed by flush valve 59 in the middle of pneumatic.The Laval nozzle of flush valve 59 upstreams is determined the flushing gas flow velocity.
After the flushing of delivery conduit 50, shutoff valve 561,562,563,59 is closed in the middle of pneumatic.The control of being undertaken by control cock 72 switches on the conveyor hopper 16 now.This is by closing shutoff valve 74 and opening shutoff valve 76 and realize.Use the pressure release control cock 84 that shifts hopper 14 then.By opening pressure release control cock 84, can be to shifting hopper 14 pressurizations.To come control presssure to discharge opening of control cock 84, approaching constant thereby flow velocity keeps in the scope of broad with the proportional mode of residual pressure (recording) that shifts in the hopper 14 by pressure sensor 92.Transfer hopper 14 after weighing is pressurizeed then, and circulation can be from section start once more.
Pulverulent solids is injected at least one pneumatic conveying circuit 12 continuously from conveyor hopper 16.As a result, delivery valve 40 is opened, and, along with the outflow of pulverulent solids, owing to pulverulent solids mixes in known manner with the carrier gas in the fluidization chamber 42, so the powder solid is by fluidization.Carrier gas is fed to the fluidization chamber 42 from gas supply unit 44 by the mode of bottom to the top.According to fluidization and the required air-flow of pulverulent solids after shifting fluidization determine the setting of barometric damper 46, it measures the flow velocity of fluidizing gas continuously.Utilization is connected in the flow velocity and/or the density sensor in delivery valve 40 downstreams of controller 49, and barometric damper 46 can also be used for controlling the flow velocity and/or the density of pulverulent solids after the fluidization of delivery conduit.
During fluidization, it is constant that the pressure in the conveyor hopper 16 keeps.Here, two operating conditionss must distinguish: whether delivery conduit 50 is supplied in the middle of pneumatic.
If delivery conduit 50 is not in use in the middle of pneumatic, then control cock 72 is switched to the pressure of control in the conveyor hopper 16, promptly shutoff valve 74 is closed and shutoff valve 76 is opened.Pressure in the conveyor hopper 16 keeps constant by the regulating circuit between pressure sensor 94 and the control cock 72 (comprising controller component 98).When weighing unit 34 detects minimum filling extent in the conveyor hopper 16, pneumatic in the middle of delivery conduit 50 just start.By closing shutoff valve 76 and opening shutoff valve 74, control cock 72 is switched to transfer hopper 14.
If delivery conduit 50 is using in the middle of pneumatic, more pulverulent solids that therefrom extracts than passing through injection process and vector gas arrive in the conveyor hopper 16.So the pressure in the conveyor hopper 16 keeps constant by the controlled release of specified quantitative gas.As a result, shutoff valve 89 is opened, and control cock 86 is used.Pressure in the conveyor hopper 16 keeps constant by the regulating circuit between pressure sensor 94 and the control cock 86 (comprising controller component 98).When the filling of finishing conveyor hopper 16 and pneumatic in the middle of during the flushing of delivery conduit 50, shutoff valve 89 is closed, and will switch to conveyor hopper 16 (that is, shutoff valve 76 is opened and shutoff valve 74 is closed) once more, thereby reach the initial operation condition once more by the control that control cock 72 carries out.
The main reference label
Shift hopper 14 shutoff valves 561,562,563
Conveyor hopper 16 Laval nozzles 581,582,583
Discharging cone 19,33 gases supply circuit 60
First weighing unit, 28 first shutoff valves 74
Second weighing unit, 34 gaseous tensions discharge circuit 83
First gas supply unit, 44 inflating bag filters 88
Claims (8)
1. one kind is fed to the device of delivery conduit with powder solid, and described device comprises:
Storage container (10);
Shift hopper (14), have top gate (18) and bottom gate (20), wherein, described top gate is connected to the top of described transfer hopper (14) and is connected to described storage container (10) so that described transfer hopper (14) can be filled with pulverulent solids from described storage container (10) by described top gate (18), and described bottom gate is connected to the bottom of described transfer hopper (14) so that described transfer hopper (14) can be emptied by described bottom gate (20); And
Conveyor hopper (16), have upper entrance (30) and bottom discharge orifice (32), described upper entrance is set at the top of described conveyor hopper (16), and described bottom discharge orifice is set at the bottom of described conveyor hopper (16) and described conveyor hopper (16) is connected to described pneumatic conveying circuit (12)
It is characterized in that described transfer hopper (14) and described conveyor hopper (16) are arranged abreast;
Fluidization chamber (52) is set at the described bottom of described transfer hopper (14), described fluidization chamber have be used for described pulverulent solids in described fluidization chamber fluidised fluidization bottom, described fluidization chamber (52) has the outlet that is provided with described bottom gate (20); And
Between the described upper entrance (30) of the described bottom of described transfer hopper (14) gate (20) and described conveyor hopper (16), be provided with pneumatic middle delivery conduit (50), by means of described pneumatic middle delivery conduit, described pulverulent solids pneumatically can be transported in the described conveyor hopper (16) from described transfer hopper (14).
2. the device that powder solid is fed to delivery conduit according to claim 1, it is characterized in that, described conveyor hopper (16) comprises having and is used for described pulverulent solids carries out the bottom and the described bottom that be arranged in described conveyor hopper (16) of fluidised fluidization in the chamber fluidization chamber (42) that described bottom discharge orifice (32) is connected in described pneumatic conveying circuit (12) with described fluidization chamber (42).
3. the device that powder solid is fed to delivery conduit according to claim 2, it is characterized in that, described device further comprises first gas supply unit (44), described first gas supply unit is connected to the described fluidization chamber (42) in the described conveyor hopper (16), described first gas supply unit (44) comprise can progressive adjusting barometric damper (46), described barometric damper (46) is equipped with gas flow controller (49) and is connected to described fluidization chamber (42), be used for can progressive adjusting fluidizing gas inject.
4. the device that powder solid is fed to delivery conduit according to claim 3, it is characterized in that, described device further comprises second gas supply unit (54), described second gas supply unit is connected to the described fluidization chamber (52) in the described transfer hopper (14), described second gas supply unit (54) comprises a plurality of parallel branches, and each described branch all has Laval nozzle (581,582,583) and corresponding stop valve (561,562,563).
5. according to each described device that powder solid is fed to delivery conduit among the claim 1-4, it is characterized in that, described device comprises further that the gaseous tension of the special use that is connected in described conveyor hopper (16) discharges circuit (85) and is arranged on described gaseous tension and discharges pressure release control cock (86) in the circuit (85), wherein, the described gaseous tension between described conveyor hopper (16) and described pressure release control cock (86) discharges the filter (88) that is provided for keeping pulverulent solids in the circuit (85).
6. the device that powder solid is fed to delivery conduit according to claim 5, it is characterized in that, described device comprises further that the gaseous tension of the special use that is connected in described transfer hopper (14) discharges circuit (83) and is arranged on described gaseous tension and discharges pressure release control cock (84) in the circuit (83) that described release circuit (83) leads in the described storage container (10).
7. the device that powder solid is fed to delivery conduit according to claim 6, it is characterized in that, described device further comprises and is used for the common apparatus that pressure is kept, and has pressure-modulation valve (72) in common gas supply circuit (70), the described common gas supply circuit, leads to via first shutoff valve (74) that first of described transfer hopper (14) connects (73) and lead to second of described conveyor hopper (16) via second shutoff valve (76) connects (75).
8. a blast furnace is characterized in that, described blast furnace is equipped with according to each described blast furnace that powder solid is fed to the device of delivery conduit among the claim 1-7.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU91344 | 2007-06-11 | ||
| LU91344 | 2007-06-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201158550Y true CN201158550Y (en) | 2008-12-03 |
Family
ID=40109143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201548165U Expired - Lifetime CN201158550Y (en) | 2007-06-11 | 2007-07-13 | Apparatus for transporting powder solid to the transportation line and blast furnace provided with the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201158550Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102180358A (en) * | 2011-04-18 | 2011-09-14 | 宝钢工程技术集团有限公司 | Blowing feeding system and method in mechanical stirring desulfurization |
| TWI579223B (en) * | 2012-07-06 | 2017-04-21 | 保羅伍斯股份有限公司 | Installation for distribution of powder material via pneumatic transport comprising a device for depressurizing a pressure vessel for storage of said material |
| CN106979363A (en) * | 2017-04-14 | 2017-07-25 | 西北工业大学 | The gas pressure reducer and its adjusting method of back pressure and flow can be adjusted simultaneously |
| CN114207260A (en) * | 2019-08-15 | 2022-03-18 | 庄信万丰股份有限公司 | Treatment of particulate filters |
-
2007
- 2007-07-13 CN CNU2007201548165U patent/CN201158550Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102180358A (en) * | 2011-04-18 | 2011-09-14 | 宝钢工程技术集团有限公司 | Blowing feeding system and method in mechanical stirring desulfurization |
| CN102180358B (en) * | 2011-04-18 | 2012-10-03 | 宝钢工程技术集团有限公司 | Blowing feeding system and method in mechanical stirring desulfurization |
| TWI579223B (en) * | 2012-07-06 | 2017-04-21 | 保羅伍斯股份有限公司 | Installation for distribution of powder material via pneumatic transport comprising a device for depressurizing a pressure vessel for storage of said material |
| US10823506B2 (en) | 2012-07-06 | 2020-11-03 | Paul Wurth S.A. | Installation for distributing pulverulent substance by pneumatic transportation, comprising a device for depressurizing a pressurized reservoir in which said substance is stored |
| CN106979363A (en) * | 2017-04-14 | 2017-07-25 | 西北工业大学 | The gas pressure reducer and its adjusting method of back pressure and flow can be adjusted simultaneously |
| CN106979363B (en) * | 2017-04-14 | 2018-12-18 | 西北工业大学 | The gas pressure reducer and its adjusting method of back pressure and flow can be adjusted simultaneously |
| CN114207260A (en) * | 2019-08-15 | 2022-03-18 | 庄信万丰股份有限公司 | Treatment of particulate filters |
| CN114207260B (en) * | 2019-08-15 | 2023-11-28 | 庄信万丰股份有限公司 | Treatment of particulate filters |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081203 |
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| CX01 | Expiry of patent term |