CN109879056A - The delivery method of powder - Google Patents

The delivery method of powder Download PDF

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Publication number
CN109879056A
CN109879056A CN201910155369.2A CN201910155369A CN109879056A CN 109879056 A CN109879056 A CN 109879056A CN 201910155369 A CN201910155369 A CN 201910155369A CN 109879056 A CN109879056 A CN 109879056A
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China
Prior art keywords
powder
gas
air
mentioned
storehouse
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CN201910155369.2A
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Chinese (zh)
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谭险峰
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CHENGDU RUIKELIN ENGINEERING TECHNOLOGY CO LTD
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CHENGDU RUIKELIN ENGINEERING TECHNOLOGY CO LTD
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Priority to CN201910155369.2A priority Critical patent/CN109879056A/en
Publication of CN109879056A publication Critical patent/CN109879056A/en
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Abstract

The present invention relates to the delivery methods of powder, comprising: receives powder to be conveyed using the powder reception pattern of powder fluidization device；Gas is set to be mixed into Dual-Phrase Distribution of Gas olid through air intake structure and powder to be conveyed using the powder fluidization mode of powder fluidization device；Dual-Phrase Distribution of Gas olid is set to transport to target point by discharge nozzle using the powder output mode of powder fluidization device；Wherein, above-mentioned air intake structure includes that air-permeable layer is isolated in powder, air intake structure is divided into charge air flow diffusion chamber and diffusing air current diffusion chamber by above-mentioned powder isolation air-permeable layer, and the gas into air intake structure is separated into diffusing air current by powder isolation air-permeable layer after charge air flow diffusion chamber and acts on powder to be conveyed in diffusing air current diffusion chamber to form above-mentioned Dual-Phrase Distribution of Gas olid.Enough ensure that the Dual-Phrase Distribution of Gas olid of powder capacitation homogeneous fluidization is carried out low energy consumption strength long-distance sand transport under the low-speed conditions for not wearing pipeline by this method.

Description

The delivery method of powder
Technical field
The present invention relates to the delivery methods of powder.
Background technique
At present in the transmission process of powder, because of the friction of powder and channel tube wall, transfer passage is caused to will appear abrasion The case where, greatly reduce the service life of transfer passage.
By taking current blast furnace carries out the dust separation of blast furnace gas as an example, press filtration knot is generally unloaded using dry type pulse storehouse pump Cylinder powder is sent to grey library and concentrates storage and outward transport by structure dust-extraction unit, pneumatic conveying jet pump.Dry type pulse storehouse pumps release Defeated ash removal equipment on filter structure dust-extraction unit is primarily present high-speed and high-temperature powder asking to the impact wear of pipeline and valve Topic not only polluted environment, but also generate large effect to the normal operation of the even entire purification device of cylinder.Although concentrated phase Pneumatic conveying process can substantially reduce powder to the impact wear of pipeline and valve compared to dilute phase pneumatic conveying technique, still, Due to the limitation of powder (blast furnace gas gas ash) characteristic deposited in blast furnace gas dust remover, blast furnace gas dust remover Defeated ash discharge can not simply apply current thick and thin phase burner technology.
Thus applicant's innovation and creation defeated ash discharge method and apparatus of blast furnace gas dust remover, publication No.: CN103213844A.The defeated ash discharge method and apparatus of blast furnace gas dust remover can be effectively improved pipe wear problem.This method Include the steps that are as follows: 1) discharge gate for opening blast furnace gas dust remover bottom, by what is deposited in blast furnace gas dust remover Ash gas for 30~40 discharging quantity requirement than being discharged into below discharge gate when powder is according to meet subsequent Pneumatic ash conveying In the pump of storehouse；2) fluidizer on the pump of starting storehouse, fluidizes the powder in the pump of storehouse sufficiently；3) outlet valve of storehouse pump is opened Door makes the powder in the pump of storehouse be discharged into powder than the double-jacket tube pneumatic conveying channel by connecting with discharge valve with 30~40 grey gas Body receives storehouse；In step 3), by being arranged at intervals in double-jacket tube pneumatic conveying channel-length direction and distinguishing directly and in it The tonifying Qi manifold of bypass pipe connection implements segmentation tonifying Qi to the double-jacket tube pneumatic conveying channel, and each section of tonifying Qi operates basis respectively The pressure detecting of the corresponding pipeline section in double-jacket tube pneumatic conveying channel is controlled.
Summary of the invention
The purpose of the present invention is to provide a kind of delivery methods of better powder.
Technical solution provided by the invention is the delivery method of powder, comprising:
Powder to be conveyed is received using the powder reception pattern of powder fluidization device；
Gas is set to be mixed into gas-solid through air intake structure and powder to be conveyed using the powder fluidization mode of powder fluidization device Two phase flow；
Dual-Phrase Distribution of Gas olid is set to transport to target point by discharge nozzle using the powder output mode of powder fluidization device；
Wherein, above-mentioned air intake structure includes that air-permeable layer is isolated in powder, and air intake structure is divided by above-mentioned powder isolation air-permeable layer Charge air flow diffusion chamber and diffusing air current diffusion chamber, into air intake structure gas after charge air flow diffusion chamber by powder every Diffusing air current is separated into from air-permeable layer and acts on powder to be conveyed in diffusing air current diffusion chamber to form above-mentioned gas-solid two Xiang Liu.
In this way, air-flow is isolated air-permeable layer by the powder for keeping apart powder and disperses air-flow, the air-flow after making dispersion It is mixed to form Dual-Phrase Distribution of Gas olid with powder, separates powder by using such, air-flow is introduced into the expansion of charge air flow diffusion chamber After dissipating, by powder isolation air-permeable layer dispersion, i.e. the potential energy of compressed gas is the kinetic energy of powder, is disguised by powder flow It sets and respectively transmits, it can be ensured that the gas-particle two-phase under the low-speed conditions for not wearing pipeline by powder capacitation homogeneous fluidization flows into Row low energy consumption strength long-distance sand transport.
Further, above-mentioned powder isolation air-permeable layer includes that can hinder at least most of powder in powder fluidization device Keep off the porous breathable film on one side surface.
Further, above-mentioned porous breathable film is a kind of blocking rate to partial size >=0.1m powder in above-mentioned powder In 99% or more porous breathable film.
Further, above-mentioned porous breathable film is eptfe film.
Expanded PTFE filtration membrane is that one kind passes through stretcher strain (i.e. the meaning of " varicosity ") in polytetrafluoro The film of fibrous blind hole is formed on vinyl material.The film itself also has the characteristics that extremely strong hydrophobicity and not viscous ash, therefore, It is not likely to produce moisture condensation paste film phenomenon in a variety of weather conditions, and the purification of film can be realized easily again by blowback It is raw.
Further, above-mentioned powder isolation air-permeable layer includes that the branch of above-mentioned another side surface of porous breathable film is arranged in Support body, above-mentioned porous breathable film are attached on the supporter.
Further, above-mentioned supporter uses Ventilate cloth.
Glass-fiber woven fabrics, P84 filtrate, aramid fiber 1313 or PTFE woven fabric can be used in Ventilate cloth.
Further, above-mentioned air intake structure includes the clamping position structure being set to outside powder isolation air-permeable layer, on Stating clamping position structure has the first clamping part for being located at powder isolation air-permeable layer one side surface, is located at powder and air-permeable layer is isolated Its other side and the second clamping part for being connect with the first clamping part, be provided with phase on above-mentioned first clamping part and the second clamping part Pair hole.
Further, the output pressure of above-mentioned Dual-Phrase Distribution of Gas olid be no more than 0.25MPa, 0.24MPa, 0.23MPa, 0.22MPa、0.21MPa、0.2MPa、0.19MPa、0.18、MPa、0.17MPa、0.16MPa、0.15MPa、0.14MPa、 0.13MPa, 0.12MPa, 0.11MPa, 0.1MPa, 0.09MPa, 0.08MPa, 0.07MPa, 0.06MPa or 0.05MPa.
Further, above-mentioned diffusing air current diffusion chamber connection first object point and the second target point, above-mentioned first object Air pressure in air pressure the second target point of > in point；Using powder fluidization device powder reception pattern when, make diffusing air current diffusion chamber It is connected to by release filter structure with first object point；Using powder fluidization device powder fluidization mode when, make diffusing air current Diffusion chamber is connected to by release filter structure with the second target point.
Further, above-mentioned target point is the powder reception storehouse for receiving powder, above-mentioned powder is received to be provided on storehouse and be unloaded Press filtering device；
Using powder fluidization device powder output mode when, Dual-Phrase Distribution of Gas olid reach powder receive storehouse when, portion gas By unloading press filtering device release.
The present invention additionally uses a kind of powder fluidization structure and powder fluidization device, powder fluidization structure, for receiving gas Body simultaneously makes gas and powder be mixed to get Dual-Phrase Distribution of Gas olid, and above-mentioned powder fluidization structure includes that air-permeable layer, above-mentioned powder is isolated in powder Body is isolated air-permeable layer and powder fluidization structure is divided into charge air flow diffusion chamber and diffusing air current diffusion chamber, and above-mentioned gas is through air inlet gas Air-permeable layer formation diffusing air current is isolated by powder after stream diffusion chamber and acts on powder to be conveyed in diffusing air current diffusion chamber To form above-mentioned Dual-Phrase Distribution of Gas olid.
Powder enters diffusing air current diffusion chamber, obstructed by powder isolation air-permeable layer make its with charge air flow diffusion chamber every It opens；Compressed gas enters charge air flow diffusion chamber after powder isolation air-permeable layer dispersion after entering charge air flow diffusion chamber, Air-flow and powder after dispersion are mixed to form Dual-Phrase Distribution of Gas olid.
Further, above-mentioned powder isolation air-permeable layer includes the porous breathable film that powder is blocked in its surface.
Further, above-mentioned porous breathable film is eptfe film.
Further, powder fluidization structure further includes the clamping position knot for above-mentioned powder isolation air-permeable layer to be formed Structure, above-mentioned clamping position structure have the first clamping part for being located at powder isolation air-permeable layer one side surface, are located at powder and are isolated Its other side of air-permeable layer and the second clamping part for being connect with the first clamping part；
The one side that air-permeable layer is isolated with powder for above-mentioned first clamping part fits closely, above-mentioned first clamping part and powder every Another side from air-permeable layer fits closely.
In this way, directly the first clamping part and the second clamping part are clamped, i.e., when installing this powder isolation air-permeable layer It completes to position the installation of powder isolation air-permeable layer, it is convenient, fast, it is easy to assemble.
Here it is charge air flow diffusion chamber that the second clamping part, which can be connect with powder fluidization device air inlet pipe, inner cavity, Shell, the first clamping part can be inner cavity be diffusing air current diffusion chamber shell.
Further, the edge flange of above-mentioned powder isolation air-permeable layer, which is clamped by above-mentioned clamping position structure.
Further, above-mentioned clamping position structure is the opposite orifice plate or opposite that powder is isolated to air-permeable layer clamping Supporting network.
Powder fluidization device possesses powder fluidization mode and powder output mode, which includes:
Air intake structure, for receiving gas and gas and powder being made to be mixed to get Dual-Phrase Distribution of Gas olid；
Ash discharge structure, for target point to be transported in Dual-Phrase Distribution of Gas olid；
Above-mentioned air intake structure is above-mentioned powder fluidization structure.
Further, powder fluidization device, including the apparatus main body that inner cavity is diffusing air current diffusion chamber and inner cavity be into The bottom cover of gas Diffusion of gas stream chamber, above-mentioned apparatus lower body are provided with the bottom plate of through-hole or hole, above-mentioned bottom cover and chassis phase Corresponding upper end is provided with the top plate of through-hole or hole；Above-mentioned top plate connects with base board flange and air-permeable layer folder is isolated in powder It holds between top plate and bottom plate.
Further, be provided with release filter structure on above-mentioned powder fluidization device, above-mentioned release filter structure it is net Gas outlet end is provided with any one in the humidity detector, temperature-detecting device, pressure-detecting device for detection gas Kind or any a variety of combination.
Further, above-mentioned diffusing air current diffusion chamber is provided with the heating device for submerging and contacting powder.
Further, being provided on above-mentioned powder fluidization device for adding into charge air flow diffusion chamber gas The heating device of heat or the air inlet pipe of charge air flow diffusion chamber connect hot gas compressed gas source.
The present invention additionally uses a kind of release filter structure of powder fluidization device.
The release filter structure of powder fluidization device, comprising:
Primordial Qi arrival end, for being connected to powder fluidization device；
Net gas outlet end, is connect by exhaust pipe with net gas transfer passage；
Wherein, above-mentioned net gas outlet end is also connected with blowback air access tube, is provided on the blowback air access tube for controlling Make the switch of its opening and closing, the switch and the switch for the air inlet pipe to powder fluidization device charge air flow diffusion chamber input gas It is associated.
When powder enters powder fluidization device or after powder enters powder fluidization device, the switch in air inlet pipe is opened, this When blowback air access tube while or certain interval of time after be opened, carry out blowback, air-flow is from air inlet pipe and blowback air at this time Two positions of access tube enter in powder fluidization device.
It is related to the charge air flow diffusion chamber input switch of air inlet pipe of gas by the switch that blowback air access tube is arranged Connection in this way when inflating to charge air flow diffusion chamber, while can carry out blowback to release filter structure, while also to air inlet gas It flows diffusion chamber and carries out power-assisted tonifying Qi, achieve many things at one stroke in this way, substantially increase the efficiency of fluidisation work.
Further, release filter structure includes filtered model and power-assisted gas transmission reproduction operation mode；
Under filtered model, the gas in powder fluidization device passes through the exhaust pipe after above-mentioned release filter structure Road is discharged into net gas transfer passage；
Under power-assisted gas transmission reproduction operation mode, gas is by anti-to the filter core of release filter structure on blowback air access tube It blows, gas is inputted to charge air flow diffusion chamber simultaneously to the purge gas that filter core carries out blowback and is back to the powder on filter core Diffusing air current diffusion chamber, while gas and powder are mixed into Dual-Phrase Distribution of Gas olid.
Further, for controlling the switch of its opening and closing and for powder fluidization device on above-mentioned blowback air access tube The air inlet pipe of charge air flow diffusion chamber input gas connect same compressed air source unit, to facilitate operation.
Further, above-mentioned compressed air source unit is compressed gas gas bag.
Further, the switch that is mutually related is solenoid valve.
Further, release filter structure further includes the control module for controlling above-mentioned solenoid valve.
Further, the desorption tube in above-mentioned net gas outlet end setting for release, with connect ambient atmosphere or other Opposite environment under low pressure.
Further, above-mentioned desorption tube is provided with pressure-detecting device, the diffusing air current of detection powder fluidization device expands Chamber atmospheric pressure value is dissipated, in the detection of release end to avoid the interference of powder.
Further, above-mentioned net gas outlet end is provided with restricting orifice.
Further, above-mentioned Primordial Qi arrival end is set to the lower end of release filter structure, it is used for and powder fluidization device Top connection；Above-mentioned net gas outlet end is set to the upper end of release filter structure.
Further, above-mentioned exhaust pipe includes downtake pipe and second exhaust pipe, the one of above-mentioned downtake pipe End is connect with above-mentioned net gas outlet end, one end of the other end connection desorption tube of the downtake pipe；In the direction of net gas discharge On, the air intake of second exhaust pipe, the gas outlet of blowback air access tube are set gradually on the middle section of above-mentioned downtake pipe, it is above-mentioned Downtake pipe is connect by second exhaust pipe with net gas transfer passage.
Present invention employs a kind of powder delivery systems, including help and blow air supply passage, this helps the outlet side for blowing air supply passage It is connect with the transfer passage that target point is transported in Dual-Phrase Distribution of Gas olid, the outlet end of the discharge nozzle of Dual-Phrase Distribution of Gas olid output is connected to Help the junction for blowing air supply passage and transfer passage.
While being transported to target point before Dual-Phrase Distribution of Gas olid is transported to target point or by Dual-Phrase Distribution of Gas olid, unlatching, which helps, blows Air supply passage.By the way that such system is arranged, when conveying Dual-Phrase Distribution of Gas olid, by help blow air supply passage by it is defeated come gas-solid two Mutually stream is pushed in transfer passage wife into not only can helping by control and blow air supply passage to control the gas-solid two in transfer passage The mutually transport status of stream, can also play the role of block clearing.
Further, the above-mentioned input extreme direction for helping the outlet side and transfer passage of blowing air supply passage is in the same direction.In this way may be used It is fully used so as to help and blow the gas kinetic energy that air supply passage is filled with.
Further, above-mentioned transfer passage is double-jacket tube pneumatic conveying channel.
Further, being provided with the power-assisted air compensating system to the transfer passage tonifying Qi on above-mentioned transfer passage；
The power-assisted air compensating system includes:
Pressure sensing cell, including be distributed on the transfer passage and be respectively used to channels different on the transfer passage The detection device that air pressure in section is detected；
Tonifying Qi unit, including be distributed on the transfer passage and respectively to coping with different channel sections on the transfer passage The tonifying Qi input pipe of tonifying Qi is carried out, the tonifying Qi input pipe is communicated to connect with corresponding detection device by control device.
In transfer passage, by help blow air supply passage help blow compressed gas transmitting kinetic energy give gas-particle two-phase bolt shape gray columns, push away It is dynamic to move ahead, but will appear decaying, gray columns is the key feedback signal for judging tonifying Qi and operating by certain section of pressure oscillation, is not being stopped It helps in the case where blowing, tonifying Qi pushes gray columns to move ahead, and becomes the process of relay conveying, realizes that powder kinetic energy is produced lower than abrasion Under raw speed, until any destination.
Further, powder delivery system further includes tee tube, above-mentioned tee tube first end connection, which helps, blows air supply passage Outlet side, second end connection transfer passage arrival end, third end connection discharge nozzle outlet end；It is logical in double-jacket tube pneumatic conveying The tip position that road is connect with tee tube, the end setting corresponding with tee tube of the inner bypass pipe in double-jacket tube pneumatic conveying channel are used In the plug for blocking the inner bypass pipe end.
Further, above-mentioned tee tube includes straight sections and bent portion, the both ends of above-mentioned straight sections, which are separately connected to help, blows Air supply passage and transfer passage；In the middle part of the connecting straight section (s) of above-mentioned arc end one end, the other end connects above-mentioned discharge nozzle.
Further, above-mentioned transfer passage includes conveying section and linkage section, it is nested in the transfer passage in Pneumatic ash conveying Inner bypass pipe in supervisor is located on conveying section, and above-mentioned linkage section is connect with the discharge nozzle of diffusing air current diffusion chamber.
Further, powder delivery system includes defeated grey mode, which includes:
Powder fluidization device, for gas and powder to be mixed into Dual-Phrase Distribution of Gas olid；
Transfer passage, for target point to be transported in Dual-Phrase Distribution of Gas olid；
It helps and blows air supply passage, connect with transfer passage；
It is above-mentioned to help the same compressed air source unit of air inlet pipe connection or different compressed air source units for blowing air supply passage, powder fluidization device；
Above-mentioned powder delivery system under defeated grey mode, blow air supply passage by helping and be filled with transfer passage by compressed gas.
Further, on above-mentioned bent portion and the link position of straight sections, the end extending direction and straight tube of bent portion Portion is in 10-35 ° of angle.
Further, above-mentioned tee tube by flange respectively with the discharge nozzle of diffusing air current diffusion chamber, transfer passage and It helps and blows air supply passage connection.
Further, above-mentioned help the air inlet pipe for blowing air supply passage one end connection powder fluidization device, other end connection is defeated Send channel.
Further, above-mentioned help blows the second compressed air source unit of air supply passage one end connection, the other end is connected to transfer passage；On It states air inlet pipe and connects the first compressed air source unit.
Present invention employs a kind of powder delivery system and powder storage devices, wherein powder delivery system, comprising:
Powder receives storehouse, for receiving powder；
Pneumatic conveying channel receives storehouse for powder pneumatic to be delivered to powder；And
Press filtering device is unloaded, powder is set to and receives on storehouse and for discharging the gas in powder reception storehouse.
The pressure difference in storehouse and another end device in pneumatic conveying channel is received by powder, Dual-Phrase Distribution of Gas olid is from pneumatic conveying channel Into powder receive storehouse after, gas from unload press filtering device be discharged into powder receive storehouse outside and meanwhile carry out release, powder is relaxed Filter device barrier receives in storehouse in powder.
Press filtering device is unloaded by the way that setting is above-mentioned, after powder conveying to powder receives storehouse, ensures that powder receives in storehouse Air pressure meet the condition of pneumatic conveying, while prevent powder release powder receive storehouse, with achieve the purpose that release, environmental protection.
Further, the above-mentioned filter element for unloading press filtering device is set to the top that powder receives storehouse.
Further, above-mentioned press filtering device gas release end of unloading is provided with gas suction device, gas suction dress It sets and can be blower, be also possible to vacuum pump.
Further, above-mentioned powder, which receives storehouse, connects powder fluidization device, above-mentioned pneumatic transporting by pneumatic conveying channel It send to access oriented pneumatic conveying channel on channel and fill into helping for gas and blows air supply passage.
Further, above-mentioned pneumatic conveying channel is double-jacket tube pneumatic conveying channel.
Powder storage device receives storehouse including powder and receives gas in storehouse for discharging powder and unloads press filtering device, Above-mentioned powder receives storehouse and is connected to by unloading press filtering device with powder reception storehouse external environment.
Further, it is the storage device main body that powder receives storehouse, the storage device that powder storage device, which includes inner cavity, It is provided with super-pressure safety valve in main body, the level-sensing device for detecting high lower bound material position is provided in the storage device main body.
Further, it is the storage device main body that powder receives storehouse, the storage device that powder storage device, which includes inner cavity, Main body includes upper and lower part, is provided with temperature-detecting device on above-mentioned upper and lower part.
Further, above-mentioned powder receives storehouse or powder receives and unloads setting pressure detecting dress in press filtering device on storehouse It sets.Here pressure-detecting device is arranged when unloading in press filtering device, preferably respectively in the net air cavity for unloading press filtering device It is interior and Primordial Qi is intracavitary is respectively provided with.Here it can learn that powder receives storehouse by net air cavity and pressure detecting that Primordial Qi is intracavitary The case where receiving powder, i.e., whether receive, whether occur it is abnormal etc., such as stated pressure differential, when pressure difference is in designated value, just Know that powder receives or receives powder and situations such as abnormal, whether to block occurs.
The lower end that powder receives storehouse is provided with the valve for powder to be discharged, and corresponding be provided with is used for below the valve Improve the humidifier of powder humidity.
Present invention employs a kind of release filter structure of powder fluidization device, the release filter structures of powder fluidization device For being arranged in powder fluidization device, the net gas end of above-mentioned release filter structure is selectable be communicated with the first pressure relief pipeline and Second pressure relief pipeline, above-mentioned first pressure relief pipeline and the second pressure relief pipeline have pressure difference.
When powder entering powder fluidization device or using powder reception pattern, the net gas end of release filter structure is connected to First pressure relief pipeline enables the smooth whereabouts of powder, after powder enters powder fluidization device, using powder fluidization mode or powder When body output mode, the net gas end of release filter structure is connected to the second pressure relief pipeline, make powder fluidisation and conveying can it is smooth into Row.
It is convenient that difference is made in different air pressure demands to powder fluidization device by the way that this release filter structure is arranged Net gas end docking mode so that it is convenient to realize powder fluidization device in powder receive, powder output during release, together Shi Shixian is in the stress-relief process of powder fluidization device to the interception of powder.
Further, above-mentioned first pressure relief pipeline connection gas transfer pipeline or gas container, above-mentioned second relief tube The output end on road is release end.Here pressure-detecting device can be set in release end, with the dispersion gas to powder fluidization device Air pressure is detected in stream diffusion chamber.
Further, valve for controlling the opening and closing of above-mentioned first pressure relief pipeline be used to unload on powder fluidization device The valve of material is associated.
Further, the valve for controlling above-mentioned second pressure relief pipeline opening and closing goes out with the opening and closing on powder fluidization device The switch of expects pipe is associated.
Further, above-mentioned net gas end is connected with blowback air access tube.
Further, opening and closing on valve and powder fluidization device for controlling the opening and closing of above-mentioned blowback air access tube into The switch of tracheae is associated.
Further, above-mentioned blowback air access tube inputs gas with for the charge air flow diffusion chamber to powder fluidization device The air inlet pipe of body connects same compressed air source unit, is controlled in this way with facilitating.
Further, being provided with the peephole positioned at its underpart on above-mentioned release filter structure, it is arranged on the peephole There is the blind flange for blocking the peephole.
Further, release filter structure, further includes the end cap positioned at the release filter structure upper end.
Further, above-mentioned end cap is blank flange.
The present invention also provides a kind of particulate matter method for sieving and powder fluidization devices；
Particulate matter method for sieving, comprising:
Powder to be conveyed is received using the powder reception pattern of powder fluidization device；
Gas is set to be mixed into gas-solid through air intake structure and powder to be conveyed using the powder fluidization mode of powder fluidization device Two phase flow；
Dual-Phrase Distribution of Gas olid is set to transport to target point by discharge nozzle using the powder output mode of powder fluidization device；
Wherein, using chamber where being mixed into Dual-Phrase Distribution of Gas olid before powder fluidization mode or in using powder fluidization mode Set specified atmospheric pressure value or atmospheric pressure value section in vivo, using keeping stable gas pressure in specified atmospheric pressure value in powder fluidization mode or In atmospheric pressure value section, keeps the air pressure in specified atmospheric pressure value or atmospheric pressure value section in powder output mode and to extract this specified Corresponding Dual-Phrase Distribution of Gas olid under atmospheric pressure value or atmospheric pressure value section.
Under different air pressures, the suspended state of the powder of different weight can be different, that is, pass through environment where control powder In air pressure, environment where powder is layered, part powder suspends under the air pressure, and part powder sinks in the air pressure It forms sediment, by pneumatic conveying, powder required for then extracting.
Further, pump-line is arranged on above-mentioned powder fluidization device, above-mentioned holding stable gas pressure is in specified air pressure Operation in value or atmospheric pressure value section includes being exported by the gas of the gas input and pump-line that control air intake structure to protect Stable gas pressure is held in specified atmospheric pressure value or atmospheric pressure value section.
Further, above-mentioned powder fluidization device includes that air-permeable layer, above-mentioned powder is isolated in the powder passed through for gas Air-permeable layer is isolated, air intake structure is divided into charge air flow diffusion chamber and diffusing air current diffusion chamber, above-mentioned gas is spread through charge air flow After chamber by powder be isolated air-permeable layer formed diffusing air current acted in diffusing air current diffusion chamber particulate matter to be conveyed to Form above-mentioned Dual-Phrase Distribution of Gas olid.
Further, using in powder output mode, to the particulate matter in powder fluidization device by place height into Row particulate cascade extracts.
Powder fluidization device, including powder fluidization mode and powder output mode, the fluidizer include:
Air-permeable layer is isolated in powder, mixed with particulate matter for obstructing particulate matter under powder fluidization mode while gas being allowed to pass through It closes；
Diffusing air current diffusion chamber is located at powder and air-permeable layer one side is isolated, and the another side that air-permeable layer is isolated in powder is corresponding Charge air flow diffusion chamber；
Extracting channel, for extracting diffusing air current diffusion chamber endoparticle object under powder output mode.
Further, above-mentioned powder isolation air-permeable layer includes the porous breathable film that particulate matter is blocked in its surface.
Further, powder fluidization device further includes that powder receives storehouse, which, which receives, is provided on storehouse for pump drainage The powder receives the gas suction device of gas in storehouse, and control above-mentioned gas suction unit makes powder receive storehouse and diffusing air current expansion It dissipates chamber and realizes pressure difference drainage.
Lead to further, being provided at least two on above-mentioned diffusing air current diffusion chamber along the extraction that gravity direction arranges Road, to facilitate the powder to different hoverheights to extract.
Further, the outlet end of above-mentioned transfer passage, which is connected with powder, receives storehouse, above-mentioned powder receives to be arranged on storehouse Have and receives gas in storehouse for discharging powder and prevent what powder from releasing to unload press filtering device.
Further, the above-mentioned gas release end for unloading press filtering device is provided with for receiving what storehouse vacuumized to powder Vacuum pump.
Further, being provided with pressure-detecting device in above-mentioned extracting channel；Alternatively, in above-mentioned diffusing air current diffusion chamber Pressure-detecting device is set.
Further, powder fluidization device further includes for making diffusing air current diffusion cavity pressure be positively retained at specified air pressure Pressure control module, above-mentioned pressure control module unloads with the air intake structure of powder fluidization device, powder fluidization device respectively Laminated structure communication connection.
The present invention also provides a kind of powder drying device, including drying mode and transport model, above-mentioned powder drying dress It sets and includes:
Air intake structure, for receiving gas and gas and powder being made to be mixed to get Dual-Phrase Distribution of Gas olid；
Discharge structure, for powder drying device to be discharged in the moisture content in Dual-Phrase Distribution of Gas olid；
Detection components, for being detected to the humidity of Dual-Phrase Distribution of Gas olid in the drying process.
By the way that this powder drying device is arranged, to powder by way of making gas and powder be mixed to form Dual-Phrase Distribution of Gas olid It is dried, compared to by the way of directly heating to powder, avoids destruction of the high temperature to powder, and form gas-solid two Xiang Liu also facilitates the direct pneumatic conveying to powder.
Further, above-mentioned discharge structure includes the release that connection accommodates the diffusing air current diffusion chamber of Dual-Phrase Distribution of Gas olid Pipe.Release end can be set pressure-detecting device and detect to the inside cavity air pressure for accommodating Dual-Phrase Distribution of Gas olid.
Further, above-mentioned detection components include the humidity detector that discharge structure outlet end is arranged in.
Further, above-mentioned discharge structure includes exhaust pipe, above-mentioned detection components include being arranged on exhaust pipe Humidity detector.
Further, powder drying device further includes the heating device for heated transportation to air intake structure gas；Or Person, above-mentioned air intake structure include the air inlet pipe for connecting hot gas gas source.
Further, powder drying device further includes the cavity for accommodating Dual-Phrase Distribution of Gas olid, it is provided in the cavity For submerging and contacting the heating device of powder.
Further, powder drying device further includes the conveying device for conveying powder, above-mentioned detection components and control The control module communication connection of conveying device opening and closing processed.
Further, above-mentioned air intake structure includes powder isolation air-permeable layer, air-permeable layer is isolated by powder flow in above-mentioned powder Change structure and be divided into charge air flow diffusion chamber and diffusing air current diffusion chamber, above-mentioned gas after charge air flow diffusion chamber by powder every Diffusing air current is formed from air-permeable layer and acts on powder to be conveyed in diffusing air current diffusion chamber to form above-mentioned gas-particle two-phase Stream.
Further, above-mentioned powder isolation air-permeable layer includes the porous breathable film that powder is blocked in its surface.
Further, powder drying device further includes the clamping position knot for above-mentioned powder isolation air-permeable layer to be formed Structure, above-mentioned clamping position structure are heating device.
Further, above-mentioned porous breathable film is to treat the isolation rate of partial size >=0.1m dust in gas 99% Above film.
Further, the hole density of above-mentioned porous breathable film is 5 × 108/cm2~30 × 108/cm2。
The present invention is described further with reference to the accompanying drawings and detailed description.The additional aspect of the present invention and excellent Point will be set forth in part in the description, and partially will become apparent from the description below.Or practice through the invention It solves.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to assist the understanding of the present invention, content provided in attached drawing and its Related explanation can be used for explaining the present invention in the present invention, but not constitute an undue limitation on the present invention.In the accompanying drawings:
Fig. 1 is the powder fluidization schematic device for illustrating present embodiment；
Fig. 2 is that storehouse pump in powder fluidization device for illustrating present embodiment, double-jacket tube pneumatic conveying channel and helping is blown The schematic diagram of air supply passage；
Fig. 3 is the schematic diagram for illustrating the powder fluidization structure of present embodiment；
Fig. 4 is the partial enlargement diagram in Fig. 3 at A；
The partial schematic diagram that Fig. 5 pumps for storehouse in the powder fluidization device for illustrating present embodiment；
Fig. 6 is the schematic diagram of the bottom plate in the powder fluidization device for illustrating present embodiment；
Fig. 7 is the schematic diagram of the powder isolation air-permeable layer in the powder fluidization device for illustrating present embodiment；
Fig. 8 is the schematic diagram of the bottom cover in the powder fluidization device for illustrating present embodiment；
Fig. 9 is the schematic diagram of the top plate in the powder fluidization device for illustrating present embodiment；
Figure 10 is the schematic diagram for illustrating the powder delivery system of present embodiment；
Figure 11 is for illustrating present embodiment a kind of discharge nozzle and double-jacket tube pneumatic conveying in the defeated ash removal equipment of multiple groups The connection schematic diagram in channel；
Figure 12 is for illustrating that powder fluidization device is using the connection signal of this particulate matter method for sieving in present embodiment Figure；
Figure 13 is the schematic diagram for illustrating powder reception storehouse in present embodiment；
Marked in the figure: the storehouse 1- pump, 101- bottom plate, the upper annular convex platform of 102-, 2- bottom cover, 200- charge air flow diffusion chamber, Annular convex platform, 3- powder isolation air-permeable layer, the edge of 301- powder isolation air-permeable layer flange, 302- are more under 201- top plate, 202- Supporter, 4- upper gasket, 5- lower gasket, 6- exhaust pipe, the 601- first row of hole breathable films, 303- powder isolation air-permeable layer Tracheae, 602- second exhaust pipe, 7- purified gas wing passage, the storehouse 8- pump release filter structure, 801- Primordial Qi arrival end, the net gas of 802- Outlet end, 9- compressed gas gas bag, 10- blowback air access tube, 11- desorption tube, 12- double-jacket tube pneumatic conveying channel, 12a- are defeated It send section, 12b- linkage section, 1201- inner bypass pipe, 13- to help to blow air supply passage, 13a- tonifying Qi input pipe, 14- air inlet pipe, 15- and go out Expects pipe, 15a- straight section, 15b- segmental arc, 16- powder receive storehouse, 17- unload press filtering device, 18- blower, 19- extracting channel, 20- humidity detector, 21- vacuum pump.
Specific embodiment
Clear, complete explanation is carried out to the present invention with reference to the accompanying drawing.Those of ordinary skill in the art are being based on these The present invention will be realized in the case where explanation.Before in conjunction with attached drawing, the present invention will be described, of particular note is that:
The technical solution provided in each section including following the description and technical characteristic in the present invention are not rushing In the case where prominent, these technical solutions and technical characteristic be can be combined with each other.
In addition, the embodiment of the present invention being related in following the description is generally only the embodiment of a branch of the invention, and The embodiment being not all of.Therefore, based on the embodiments of the present invention, those of ordinary skill in the art are not making creativeness Every other embodiment obtained, should fall within the scope of the present invention under the premise of labour.
About term in the present invention and unit.Term in description and claims of this specification and related part " comprising " and its any deformation, it is intended that cover and non-exclusive include.Following many places will appear " pressure-detecting device ", " humidity detector ", " temperature-detecting device " or " heating device ", the device being previously mentioned are all made of common general device i.e. Can, the installation of device, the acquisition of signal use usual manner, and partial devices are being not shown in the figure and are marking.
As schemed, 1~13, the present invention provides a kind of delivery methods of powder, comprising:
Powder to be conveyed is received using the powder reception pattern of powder fluidization device；
Gas is set to be mixed into gas-solid through air intake structure and powder to be conveyed using the powder fluidization mode of powder fluidization device Two phase flow；
So that Dual-Phrase Distribution of Gas olid is transported to powder by discharge nozzle using the powder output mode of powder fluidization device and receives storehouse 16；
Wherein, above-mentioned air intake structure includes that air-permeable layer 3 is isolated in powder, and above-mentioned powder isolation air-permeable layer 3 divides air intake structure For charge air flow diffusion chamber 200 and diffusing air current diffusion chamber 100, into air intake structure gas through charge air flow diffusion chamber 200 Afterwards by powder be isolated air-permeable layer 3 be separated into diffusing air current and acted in diffusing air current diffusion chamber 100 powder to be conveyed from And form above-mentioned Dual-Phrase Distribution of Gas olid.
In this way, air-flow is isolated air-permeable layer 3 by the powder for keeping apart powder and disperses air-flow, the air-flow after making dispersion It is mixed to form Dual-Phrase Distribution of Gas olid with powder, separates powder by using such, air-flow is introduced into charge air flow diffusion chamber 200 After diffusion, disperses by powder isolation air-permeable layer 3, enough ensure under the low-speed conditions for not wearing pipeline that powder capacitation is uniform Fluidised Dual-Phrase Distribution of Gas olid carries out low energy consumption strength long-distance sand transport.
Powder isolation air-permeable layer 3 includes that at least most of powder in powder fluidization device can be blocked in one side surface On porous breathable film 302.Powder is stopped by the way that the porous breathable film 302 is arranged compared to other gas permeable materials On the surface of porous breathable film 302, avoids powder and be deposited in gas permeable material；In the fluidisation portion using traditional gas permeable material When part, after long-time use, powder is deposited in fluidizing component, seriously affects fluidisation efficiency, using general manner of cleaning up It is more troublesome and ineffective, air-permeable layer 3 is isolated using the powder for being provided with porous breathable film 302 of the invention, it will at least Most of powder is blocked on one side surface, avoid powder enter powder isolation air-permeable layer 3 inside, directly by powder every From the cleaning work on the surface, avoided to gas permeable material complexity, make this powder isolation air-permeable layer 3 that there is quite high use Service life.
Porous breathable film 302 is a kind of blocking rate to partial size >=0.1m powder in above-mentioned powder 99% or more Porous breathable film 302.Above-mentioned powder isolation air-permeable layer 3 includes that another side surface of above-mentioned porous breathable film 302 is arranged in Supporter 303, above-mentioned porous breathable film 302 are attached on the supporter 303, and supporter 303 uses Ventilate cloth.
Above-mentioned air intake structure includes the clamping position structure being set to outside powder isolation air-permeable layer 3, above-mentioned clamping position Structure has the first clamping part for being located at powder isolation 3 one side surface of air-permeable layer, is located at powder and its other side of air-permeable layer 3 is isolated And the second clamping part for being connect with the first clamping part, be provided with opposite hole on above-mentioned first clamping part and the second clamping part.
The output pressure of above-mentioned Dual-Phrase Distribution of Gas olid be no more than 0.25MPa, 0.24MPa, 0.23MPa, 0.22MPa, 0.21MPa、0.2MPa、0.19MPa、0.18、MPa、0.17MPa、0.16MPa、0.15MPa、0.14MPa、0.13MPa、 0.12MPa, 0.11MPa, 0.1MPa, 0.09MPa, 0.08MPa, 0.07MPa, 0.06MPa or 0.05MPa.
Diffusing air current diffusion chamber 100 is connected to first object point and the second target point, air pressure > the in above-mentioned first object point Air pressure in two target points；Using powder fluidization device powder reception pattern when, press through diffusing air current diffusion chamber 100 by unloading Filter structure is connected to first object point；Using powder fluidization device powder fluidization mode when, keep diffusing air current diffusion chamber 100 logical Release filter structure is crossed to be connected to the second target point.
Above-mentioned powder, which receives to be provided on storehouse 16, unloads press filtering device 17；Use the powder output mode of powder fluidization device When, when Dual-Phrase Distribution of Gas olid reaches powder reception storehouse 16, portion gas is discharged by unloading press filtering device 17.
Below by taking the defeated ash removal equipment of blast furnace gas dust remover as an example, this method is illustrated.
Such as Fig. 1~11, for the defeated ash removal equipment of blast furnace gas dust remover, device configuration corresponding operation switch, Control valve detects instrument, unloads soot blower, vibrator used in ash etc., this granting includes following operating procedure:
Blast furnace gas dust remover powder is discharged into the pump of storehouse by S1, the discharge gate for opening blast furnace gas dust remover, to Storehouse pump, which is filled with, quickly sufficiently fluidizes to obtain homogeneous fluidization the powder in the pump of storehouse as the compressed gas of fluidisation kinetic energy gas Gas-particle two-phase object；
S2, from storehouse pump in be discharged above-mentioned gas-particle two-phase object to powder receive storehouse 16 in；Wherein, above-mentioned Dual-Phrase Distribution of Gas olid is reached To output pressure≤0.15MPa and dust output mode at the end of remaining Dust Capacity≤dust in dust fluidizing device receive At the end of mode in dust fluidizing device received Dust Capacity to be conveyed 20%.
Storehouse pump internal pressure can be selected between 40-110kpa, and the ash discharge time is 90-120s, and fluidizing the time used can be in 10-15s.
With the fluidization more sufficient than completion Quick uniform of high ash gas, the export under the low pressure of 0.1-0.15MPa.It incite somebody to action this in this way Approach application substantially increases making for the transfer passage for conveying powder in the defeated ash removal equipment of blast furnace gas dust remover Use the service life.The control of output pressure control and output ash quantity to above-mentioned gas-particle two-phase object, enough ensures do not wearing the low of pipeline The gas-particle two-phase object of the relatively high powder capacitation homogeneous fluidization of grey gas is subjected to low energy consumption strength long-distance sand transport under the conditions of speed.
Realize that this method can rely on a kind of powder fluidization structure, for receiving gas and gas and powder being made to be mixed to get gas Fixed double phase flow, above-mentioned powder fluidization structure include that air-permeable layer 3 is isolated in powder, and air-permeable layer 3 is isolated by powder fluidization knot in above-mentioned powder Structure is divided into charge air flow diffusion chamber 200 and diffusing air current diffusion chamber 100, and above-mentioned gas passes through after charge air flow diffusion chamber 200 Powder isolation air-permeable layer 3 forms diffusing air current and acts on powder to be conveyed in diffusing air current diffusion chamber 100 in formation State Dual-Phrase Distribution of Gas olid.
Above-mentioned powder isolation air-permeable layer 3 includes the porous breathable film 302 that powder is blocked in its surface.
Powder fluidization structure further includes the clamping position structure for above-mentioned powder isolation air-permeable layer 3 to be formed, above-mentioned folder Hold location structure have be located at powder isolation 3 one side surface of air-permeable layer the first clamping part, be located at powder isolation air-permeable layer 3 its The other side and the second clamping part for being connect with the first clamping part；The side of air-permeable layer 3 is isolated with powder for above-mentioned first clamping part Face fits closely, and the another side that air-permeable layer 3 is isolated with powder for above-mentioned first clamping part fits closely.
In this way, directly clamp the first clamping part and the second clamping part when installing this powder isolation air-permeable layer 3, It completes to position the installation of powder isolation air-permeable layer 3, it is convenient, fast, it is easy to assemble.
Here the second clamping part can be connect with powder fluidization device air inlet pipe 14, inner cavity as charge air flow diffusion Component in the shell of chamber 200, the first clamping part can be the component in the shell that inner cavity is diffusing air current diffusion chamber 100.
301 flange of edge of above-mentioned powder isolation air-permeable layer 3, which is clamped by above-mentioned clamping position structure.Using The mode of 301 flange of edge is not only for an effective support to powder isolation air-permeable layer 3 is formed, also using the first clamping The mode that flange is stepped up in portion and the second clamping part allows above-mentioned edge 301 to form a sealing structure.
Above-mentioned clamping position structure is the opposite orifice plate for clamping powder isolation air-permeable layer 3, is also possible to supporting network.
Powder fluidization device possesses powder fluidization mode and powder output mode, which includes:
Air intake structure, for receiving gas and gas and powder being made to be mixed to get Dual-Phrase Distribution of Gas olid；
Ash discharge structure, for target point to be transported in Dual-Phrase Distribution of Gas olid；
Above-mentioned air intake structure is above-mentioned powder fluidization structure.
By using above-mentioned powder fluidization structure, make the part of the realization fluidisation function of this powder fluidization device readily removable Dress.
Powder fluidization device is that charge air flow expands including the apparatus main body that inner cavity is diffusing air current diffusion chamber 100 and inner cavity The bottom cover 2 of chamber 200 is dissipated, above-mentioned apparatus lower body is provided with the bottom plate 101 of through-hole or hole, above-mentioned bottom cover 2 and chassis phase Corresponding upper end is provided with the top plate 201 of through-hole or hole；Above-mentioned top plate 201 and 101 flanged joint of bottom plate and by powder every It is clamped between top plate 201 and bottom plate 101 from air-permeable layer 3.Before fluidisation work carries out or in fluid mapper process, preferably to powder Body is dried, and interferes powder by moisture content, can be by the way that insulating layer heat tracing, jet chimney companion is arranged in apparatus main body Hot (insulating layer heat tracing can also equally be arranged on transfer passage) can be realized on source by heat gas, or heating powder Treat the drying process of fluidisation powder.
Structure is formed in this way, and diffusing air current diffusion chamber 100 and charge air flow diffusion chamber 200, which are two, to be separated from each other Two cavitys, can not only provide convenience in maintenance, repair, very can also easily complete powder isolation air-permeable layer 3 Effective connection of diffusing air current diffusion chamber 100 and charge air flow diffusion chamber 200 is completed in installation.
Above-mentioned bottom cover 2 can be divided into two parts, and lower part is a cover type structure, and top is top plate 201, form one Extraneous hollow structure is connected to air inlet pipe 14 by top plate 201, the gas outlet of air inlet pipe 14 is located on cover type structure.Above-mentioned Through-hole on the bottom plate 101 of apparatus main body is preferably corresponding up and down with the through-hole on aforementioned top plate 201.Certainly top plate here 201 also could alternatively be supporting network with bottom plate 101, as long as ensureing that the air-flow entered from air inlet pipe 14 can be from charge air flow diffusion chamber 200 enter diffusing air current diffusion chamber 100 after air-permeable layer 3 is isolated in powder.
Release filter structure, the net gas outlet end 802 of above-mentioned release filter structure are provided on above-mentioned powder fluidization device Be provided in the humidity detector, temperature-detecting device, pressure-detecting device for detection gas any one or it is any A variety of combinations.In this way by the way that humidity detector, temperature detection dress is arranged in the net gas outlet end 802 of release filter structure It sets, any one or any a variety of combination in pressure-detecting device are mentioned with effectively detecting to filtered gas The accuracy of high detection avoids the gas to incorporation powder from detecting, keeps testing result inaccurate.
It is provided on above-mentioned powder fluidization device for the heating to being heated into 200 gas of charge air flow diffusion chamber The air inlet pipe 14 of device or charge air flow diffusion chamber 200 connects hot gas compressed gas source.In this way, it improves dry to powder Dry efficiency.
The powder fluidization device is used in the defeated ash removal equipment of blast furnace gas dust remover, including (inner cavity is point to storehouse pump 1 Air-dispersing stream diffusion chamber 100, alternatively referred to as apparatus main body), bottom cover 2 (inner cavity be charge air flow diffusion chamber 200) and powder isolation thoroughly Gas-bearing formation 3.
Storehouse pump 1, the upper end of storehouse pump 1 are used to connect with the blast furnace gas dust remover discharge port of setting unloading valve group；On State lower end outlet setting 101 back cover of bottom plate of storehouse pump 1；Storehouse pump 1 can be supported by support frame, support leg, the lower part of storehouse pump 1 For funnel structure；
Bottom cover 2, is provided with the air inlet for inputting fluidisation kinetic energy gas, which is set to storehouse and pumps 1 lower end, the bottom cover 2 Upper end setting top plate 201 binds, for corresponding with above-mentioned bottom plate 101；
Here the aperture of top plate 201, bottom plate 101 according to hole powder number, granular size determine that main function promotes Powder sufficiently fluidizes；Bottom cover 2 is connected to the bottom that storehouse pumps, and fluidisation kinetic energy gas enters from 2 side of bottom cover；Above-mentioned powder isolation is ventilative Layer 3 is installed between the bottom and bottom cover 2 of storehouse pump 1.Here bottom cover 2 serves not only as the sealing element of storehouse pump lower end, and plays Support fixture effect as powder isolation air-permeable layer 3.
Air-permeable layer 3 is isolated in powder, corresponding with bottom plate 101 or top plate 201, and powder isolation air-permeable layer 3, which is fixed, to be held on Between storehouse pump 1 and bottom cover 2 and it is close to compress, keeps the fluidisation by above-mentioned top plate 201, powder isolation air-permeable layer 3 and bottom plate 101 dynamic Energy gas carries out fluidization treatment to the powder in the pump of storehouse and obtains gas-particle two-phase object.Pass through flange between above-mentioned bottom plate 101 and top plate 201 Connection.It is indicated for convenience in figure, gap is depicted between powder isolation air-permeable layer 3 and bottom plate 101, top plate 201, in reality In setting, it is that impaction state is seamless that bottom plate 101, top plate 201, which are isolated between air-permeable layer 3 with powder,.
Above-mentioned powder isolation air-permeable layer 3 is the disk-like structure of elastic material.Divide uniform stream by using microcosmic flood tide Change air-flow, the gas for entering storehouse pump is enable to be completed in a short time to the powder in storehouse pump 1 sufficiently without the even fluidizing of dead angle.I.e. After powder is input to storehouse 1 inside of pump, fall into above-mentioned powder isolation air-permeable layer 3, the compressed gas being filled with enters storehouse from below Pump 1, compressed gas are isolated air-permeable layer 3 by powder, are sufficiently fluidized with the powder to top.
Expanded PTFE is a kind of medical macromolecular materials, for manufacturing the medical system such as artificial blood vessel, cardiac patch Product are current ideal biological tissue substitutes.Industrially, it is thin to be typically used as filter cartridge, microfiltration for expanded PTFE Film, filter hole, washer.By research, by powder isolation air-permeable layer 3 as the core component in fluidizer, side will be fallen into Powder in the pump of storehouse is propped up, and the other side receives the fluidisation kinetic energy gas for entering storehouse pump, allows the gas that air-permeable layer is isolated by this powder 3, a large amount of gas is split uniformly, powder can be isolated with less compressed gas saturating in a short time in this way The powder that gas-bearing formation 3 supports carries out Quick uniform fluidisation.
After storehouse pump receives powder, a certain amount of fluidisation kinetic energy gas (speed that is filled with, fluidisation time root are quickly filled with to storehouse pump It is adjusted according to factors such as storehouse pump size, powder amounts) above-mentioned gas-particle two-phase object is generated, when being conveyed to gas-particle two-phase object, Pressure is small compared with traditional discharge pressure when conveying, and speed is low, and the abrasion of transfer pipeline is allowed to greatly reduce；Such low pressure, The important characterization of low speed is, at the end of above-mentioned Dual-Phrase Distribution of Gas olid output pressure≤0.15MPa achieved and dust output mode Received dust to be conveyed in dust fluidizing device at the end of remaining Dust Capacity≤dust reception pattern in dust fluidizing device The 20% of amount.
By the control of output pressure control and output ash quantity to above-mentioned gas-particle two-phase object, enough ensure do not wearing pipeline Low-speed conditions under that the gas-particle two-phase object of the relatively high powder capacitation homogeneous fluidization of grey gas carried out low energy consumption strength is remote Conveying.It is logical that the single through-hole of above-mentioned bottom plate 101 and top plate 201 is correspondingly formed the intermediate air-flow that air-permeable layer 3 is isolated for powder up and down Road.Reliable airflow channel is formed on fluidizer to allow in this way, goes on smoothly fluidisation work, allows fluidisation kinetic energy gas can be smoothly Air-permeable layer 3 is isolated by powder.
Above-mentioned powder isolation air-permeable layer 3 is connect with storehouse pump 1, bottom cover 2 respectively by flange, and the bolt used on flange can also Powder is isolated with top plate 201 as regulating base board 101 regulating device of 3 pressure of air-permeable layer.
301 flange of edge of above-mentioned powder isolation air-permeable layer 3, above-mentioned flange edge 301 is pressed in bottom plate 101 and top plate Between 201.By the way that 3 edge of air-permeable layer, 301 flange is isolated in powder, air-permeable layer 3 not only can be isolated to powder and be provided with Effect support, can also allow flange edge 301 to use as gasket, ensure sealing performance.
On the basis of present embodiment, when powder being arranged air-permeable layer 3 being isolated, washer can also be set, i.e., powder every From the upper gasket 4 being clamped between powder isolation air-permeable layer 3 and storehouse pump 1 is provided on the upside of air-permeable layer 3, downside is provided with and is pressed from both sides It holds and the lower gasket 5 between air-permeable layer 3 and bottom cover 2 is isolated in powder, this is in order at the edge using powder isolation air-permeable layer 3 Under the premise of 301 carry out compression sealing, leakproofness is further strengthened.The lower end of above-mentioned bottom plate 101, which is provided with, to be extended downwardly For compressing the upper annular convex platform 102 of upper gasket, the upper end of above-mentioned top plate 201 be provided with upwardly extend for compressing lower gasket 5 lower annular convex platform 202, to ensure bottom plate 101, top plate 201 when the progress installment work of air-permeable layer 3 is isolated with powder, to powder The compression that air-permeable layer 3 is isolated in body enough sufficiently can keep higher safety.
It in step sl further include the behaviour for adjusting storehouse pump internal pressure to carry out discharging from blast furnace gas dust remover Make: by opening on the exhaust pipe 6 for being located at and being connected between blast furnace gas dust remover purified gas wing passage 7 and storehouse pump inner cavity Equalizing valve, make storehouse pump in the successive storehouse pump release filter structure 8 and above-mentioned by being arranged on above-mentioned exhaust pipe 6 of gas It after equalizing valve, is discharged into blast furnace gas dust remover purified gas wing passage 7 by the exhaust pipe 6, realizes dedusting of blast furnace gas The pressure balance of device purified gas wing passage 7 and storehouse pump inner cavity.
Realize that purified gas wing passage 7 and storehouse pump the pressure balance of 1 inner cavity.Since the pressure in purified gas wing passage 7 is inevitable Less than the pressure in dust-extraction unit discharge gate, this allows for being formed between storehouse pump inner cavity and the discharge gate of dust-extraction unit and press Difference promotes powder to fall into storehouse from discharge gate and pumps 1 inner cavity.Release filter structure 8 is pumped due to being equipped with storehouse before equalizing valve door, because This is less by dustiness in the gas of equalizing valve door, ensure that the longer service life of equalizing valve door.
In step sl further include the operation for carrying out discharging from blast furnace gas dust remover: opening the equalizing valve of storehouse pump, Chamber pressure difference≤10kPa is pumped in blast furnace gas dust remover chamber pressure and storehouse, the inlet valve of storehouse pump is opened, is then turned on blast furnace Then coal gas dust collector unloading valve group starts the vibrator of grey blast furnace gas dust remover, then carries out soot blowing to ash bucket；
When the ash bucket dust charge level meter of blast furnace gas dust remover show lower bound or ash discharge timer time to preset value or The blast furnace gas dust remover chamber pressure and storehouse pump chamber pressure differential pressure >=30kPa or storehouse pump display high charge level when, successively into Row: stop soot blowing work, stop vibrator, close blast furnace gas dust remover unloading valve group, close storehouse pump inlet valve, close storehouse pump Equalizing valve.It is realized by the operating procedure and is reliably isolated and is unloaded ash between different pressures store up grey container.
Specific operating process can carry out (powder reception pattern) by following procedure:
1) it unloads grey time timer (variable) and starts timing；
2) it opens a position and pumps equalizing valve 8 minutes (variable)；
3) the blast furnace gas dust remover pressure and storehouse pump pressure differential pressure are detected within≤10kPa (variable)；
4) blast furnace gas dust remover storehouse pump inlet valve is opened；
5) the blast furnace gas dust remover unloading valve group coal gas sealing valve is opened；
6) after step reaches position on, blast furnace gas dust remover unloading valve group dust excision valve is opened；
7) after step reaches position on, the blast furnace gas dust remover unloading valve group rotary valve is opened；
8) after step reaches position on, start the blast furnace gas dust remover ash bucket vibrator 10 seconds (variable), then be spaced 10 seconds (variable) alternately；
9) ash bucket soot-blowing valve is opened, reaches and stops within an after-blow 10 seconds (variable) 20 seconds (variable) alternately；
10) blast furnace gas dust remover ash bucket dust charge level meter shows lower bound or ash discharge timer time to ((change in 20 minutes Amount)) or the blast furnace gas dust remover pressure and storehouse pump pressure differential pressure in >=30kPa (variable) or more or the dedusting of blast furnace gas When the pump display high charge level of device storehouse, then carry out next-step operation；
11) stop the soot-blowing valve of the blast furnace gas dust remover ash bucket；
12) stop vibrator；
13) after stopping blast furnace gas dust remover unloading valve group rotary valve delay 10S, the blast furnace gas dust remover is closed Unloading valve group dust cuts off valve；
14) step closes the 10S that is delayed in place on, closes unloading valve group coal gas sealing valve；
15) step closes the 10S that is delayed in place on, closes blast furnace gas dust remover storehouse pump inlet valve；
16) after step is closed in place on, blast furnace gas dust remover storehouse pump equalizing valve is closed.
The defeated ash manipulation process of storehouse pump can carry out (powder output mode) by following procedure: (it is same pump the state that puts into operation in storehouse When detect the high material limit of storehouse pump and the storehouse pumps corresponding blast furnace gas dust remover and do not unloading grey state)；
1) switch button of blow tank conveying is operated；
2) storehouse pump 1 is detected in the state of putting into operation and the storehouse pumps corresponding blast furnace gas dust remover and do not unloading grey state, storehouse pump 1 In defeated grey state, powder does not receive storehouse 16 and is putting into operation position and powder receives storehouse 16 without high and low material position simultaneously；
3) it is automatic to execute blow tank conveying: open a position the fluidizing valve (open for 5 seconds not in place then be automatically closed) pumped in air inlet pipe 14；
4) it opens a position and pumps release filter structure pressurizing valve (open within 5 seconds not in place then be automatically closed and close fluidizing valve)；
5) storehouse pump pressure value >=110kPa (variable) is detected；
6) open a position the second outlet valve (open for 9 seconds not in place then fluidizing valve and pressurizing valve is automatically closed) pumped out in expects pipe 15；
7) open a position the first outlet valve (open for 9 seconds not in place then fluidizing valve and pressurizing valve is automatically closed) pumped out in expects pipe 15；
8) it is delayed 5 seconds to open to help and blows valve；
9) after detecting storehouse pump pressure value≤40kPa (variable), fluidizing valve is closed；
10) it closes storehouse and pumps release filter structure pressurizing valve, close the first outlet valve, close the second outlet valve, be delayed 20 seconds (variable)；
11) it closes to help and blows valve.
This powder fluidization device is provided with release filter structure, comprising:
Primordial Qi arrival end 801, for being connected to powder fluidization device；
Net gas outlet end 802, is connect by exhaust pipe 6 with net gas transfer passage；
Wherein, above-mentioned net gas outlet end 802 is also connected with blowback air access tube 10, is provided on the blowback air access tube 10 For control its opening and closing switch, the switch with for powder fluidization device charge air flow diffusion chamber 200 input gas into The switch of tracheae 14 is associated.
By the way that the switch of blowback air access tube 10 and opening for the air inlet pipe 14 of the input gas of charge air flow diffusion chamber 200 is arranged Closing is associated, and in this way when inflating to charge air flow diffusion chamber 200, while can carry out blowback to release filter structure, simultaneously Power-assisted tonifying Qi also is carried out to charge air flow diffusion chamber 200, is achieved many things at one stroke in this way, the efficiency of fluidisation work is substantially increased.
Release filter structure includes filtered model and power-assisted gas transmission reproduction operation mode；
Under filtered model, the gas in powder fluidization device passes through the exhaust pipe after above-mentioned release filter structure Road 6 is discharged into net gas transfer passage；
Under power-assisted gas transmission reproduction operation mode, gas passes through the filter core on blowback air access tube 10 to release filter structure Blowback, the purge gas for carrying out blowback to filter core input gas to charge air flow diffusion chamber 200 simultaneously and by the powder on filter core It is back to diffusing air current diffusion chamber 100, while gas and powder are mixed into Dual-Phrase Distribution of Gas olid.
For controlling the switch of its opening and closing and for the air inlet gas to powder fluidization device on above-mentioned blowback air access tube 10 The air inlet pipe 14 that stream diffusion chamber 200 inputs gas connects same compressed air source unit, to facilitate operation.
Above-mentioned compressed air source unit is compressed gas gas bag 9.
The switch that is mutually related is solenoid valve.Release filter structure further includes the control mould for controlling above-mentioned solenoid valve Block.
In desorption tube 11 of above-mentioned net gas outlet end 802 setting for release, to connect ambient atmosphere or other are opposite Environment under low pressure.
Above-mentioned net gas outlet end 802 is provided with restricting orifice, and pressure-detecting device is arranged on desorption tube 11.
Above-mentioned Primordial Qi arrival end 801 is set to the lower end of release filter structure, for connecting with the top of powder fluidization device It is logical；Above-mentioned net gas outlet end 802 is set to the upper end of release filter structure.In this way to facilitate in blowback or power-assisted tonifying Qi, side Just powder is back in diffusing air current diffusion chamber 100.
This release filter structure is used in blast furnace gas dust remover, release filter structure 8 can be pumped for storehouse, for setting It sets on the pump of the storehouse of blast furnace gas dust remover, comprising:
Primordial Qi arrival end 801 is connected to storehouse pump inner cavity and is provided with fluidisation spray head；
Net gas outlet end 802, is connect by exhaust pipe 6 with blast furnace gas dust remover purified gas wing passage 7；It is above-mentioned net Gas outlet end 802 is provided with restricting orifice, so that the pressure reduction of air-flow.
Wherein, above-mentioned net gas outlet end 802 is also connected with blowback air access tube 10, the blowback air access tube 10 with for pair The air inlet pipe 14 of storehouse pump input fluidisation kinetic energy gas connects same compressed air source unit.Above-mentioned Primordial Qi arrival end 801 is set to storehouse pump release The lower end of filter structure 8, for being connected to the top that storehouse pumps；Above-mentioned net gas outlet end 802 is set to storehouse pump release filter structure 8 Upper end.
I.e. the net gas outlet of storehouse pump release filter structure 8 is separately connected blowback air access tube 10 and net by exhaust pipe 6 Coal gas wing passage 7；When carrying out blowback, purge gas carries out blowback to storehouse pump 8 filter core of release filter structure, and purge gas is simultaneously Input fluidisation kinetic energy gas is pumped to storehouse, the powder on filter core is back to storehouse pump.By such method, to realize filter core again It is raw, while the recycling to powder.
In this way while being filled with fluidisation kinetic energy gas to storehouse pump, kinetic energy gas is fluidized from blowback air access tube 10 into aforementioned Net gas outlet end 802, i.e., when be filled with fluidisation kinetic energy gas to storehouse pump, in storehouse, the position of pump release filter structure 8 is enterprising Row power-assisted tonifying Qi, while being regenerated in filter core of the time to storehouse pump release filter structure 8.
It includes equal press filtration operating mode and power-assisted gas transmission reproduction operation mode that this storehouse, which pumps release filter structure 8,；
Under equal press filtration operating mode, be connected to blast furnace gas dust remover purified gas wing passage 7 and storehouse pump inner cavity it Between exhaust pipe 6 on equalizing valve door open, make storehouse pump in gas successively through setting it is upper on above-mentioned exhaust pipe 6 It states storehouse pump release filter structure 8 and above-mentioned equalizing valve behind the door, blast furnace gas dust remover purified gas is discharged by the exhaust pipe 6 In wing passage 7；
Under equal press filtration operating mode, the valve on storehouse pump air inlet pipe 14 and blowback air access tube 10 is opened, storehouse is pumped The filter core blowback of release filter structure 8, to filter core carry out blowback purge gas simultaneously to storehouse pump input fluidisation kinetic energy gas and will Powder on filter core is back in the pump of storehouse.
It is provided with the valve that is mutually related in the air inlet pipe 14 of above-mentioned blowback air access tube 10 and storehouse pump, for making blowback air The switch of the air inlet pipe 14 of the switch of access tube 10 and storehouse pump is associated, to pump simultaneously to the switch of blowback air access tube 10 and storehouse The switch of air inlet pipe 14 operated.Valve on i.e. above-mentioned blowback air access tube 10 fluidizes kinetic energy with for pumping input to storehouse Valve in the air inlet pipe 14 of gas is set as linkage control, while being filled with fluidisation kinetic energy gas to storehouse pump, also carries out to filter core Pulse cleaning work, while from storehouse pump it is another from position to storehouse pump carry out power-assisted tonifying Qi, substantially increase to storehouse pump be filled with stream Change the efficiency of kinetic energy gas, and at the same time carrying out the filter core pulse cleaning for pumping release filter structure 8 to storehouse.
Above-mentioned switch is mutually related valve as solenoid valve.It further includes for controlling above-mentioned electricity that storehouse, which pumps release filter structure 8, The control module of magnet valve uses routine PLC control module in control.
Branch of the setting for release on exhaust pipe 6, i.e., desorption tube of the net setting of gas outlet end 802 for release 11, valve is provided on desorption tube 11.
Above-mentioned compressed air source unit is compressed nitrogen gas bag.
Here exhaust pipe 6 includes downtake pipe 601 and second exhaust pipe 602, one end of above-mentioned downtake pipe 601 It is connect with above-mentioned net gas outlet end 802, one end of the other end connection desorption tube 11 of the downtake pipe 601；It is discharged in net gas Direction on, air intake, the blowback air access tube of second exhaust pipe 602 are set gradually on the middle section of above-mentioned downtake pipe 601 10 gas outlet, above-mentioned downtake pipe 601 pass through second exhaust pipe 602 and blast furnace gas dust remover purified gas wing passage 7 Connection.In this way, preferably pipe arrangement structure is obtained, to realize the optimization that pipeline is arranged.
A kind of powder delivery system is used in present embodiment, including blowing air supply passage to helping for transfer passage tonifying Qi 13, this helps the outlet side for blowing air supply passage 13 to transport to target point by connecting an inlet end of tee tube and by Dual-Phrase Distribution of Gas olid Transfer passage connection, the Dual-Phrase Distribution of Gas olid of another inlet end and powder fluidization device of the tee tube discharge nozzle 15 company It connects.While being transported to target point before Dual-Phrase Distribution of Gas olid is transported to target point or by Dual-Phrase Distribution of Gas olid, unlatching, which helps, blows tonifying Qi Channel.Preferably, it will first help and blow air supply passage 13 and open, and be filled with gas to transfer passage, then Dual-Phrase Distribution of Gas olid will be transported to defeated It send in channel 12.
When conveying Dual-Phrase Distribution of Gas olid, by help blow air supply passage 13 by from tee tube it is defeated come Dual-Phrase Distribution of Gas olid conveying 12 wife of channel pushes into not only can helping by control and blow air supply passage 13 to control the Dual-Phrase Distribution of Gas olid in transfer passage Transport status can also play the role of block clearing.
The above-mentioned input extreme direction for helping the outlet side and transfer passage of blowing air supply passage 13 is in the same direction, blows benefit in this way to ensure to help The gas that gas channel 13 exports can have higher utilization rate to act in the Dual-Phrase Distribution of Gas olid in transfer passage.
Above-mentioned transfer passage is that (existing double-jacket tube Pneumatic Conveying Technology can be found in " double sets in double-jacket tube pneumatic conveying channel 12 The numerical simulation and energy consumption analysis of pipe During Dense Phase Pneumatic Transportation, Guan Chunsheng etc., process engineering journal, the 4th phase of volume 9,2009 Year August ").The first compressed air source unit of connection of air supply passage 13 is blown in helping here, the interior other pipe in above-mentioned double-jacket tube pneumatic conveying channel 12 Connect the second compressed air source unit.In the tip position that double-jacket tube pneumatic conveying channel 12 is connect with tee tube, double-jacket tube pneumatic conveying The plug for blocking 1201 end of inner bypass pipe is arranged in the inner bypass pipe 1201 in channel 12 end corresponding with tee tube, this Sample makes more to come in the main line in the self-service air flow direction double-jacket tube pneumatic conveying channel 12 for blowing air supply passage 13.Certainly, Help the compressed air source unit for blowing the connection of air supply passage 13 that can also be connected to the interior other pipe in double-jacket tube pneumatic conveying channel 12, in this implementation In mode, it is preferable to provide separately independent gas source.
Above-mentioned transfer passage includes conveying section 12a and linkage section 12b, is nested in Pneumatic ash conveying supervisor in the transfer passage Inner bypass pipe 1201 be located on conveying section, above-mentioned linkage section is connect with the discharge nozzle 15 of diffusing air current diffusion chamber 100；Above-mentioned company The segmental arc 15b for meeting section 12b and discharge nozzle 15 forms above-mentioned tee tube.Discharge nozzle 15 includes straight section 15a and connecting conveying pipe road The discharge end of 12 segmental arc 15b, straight section 15a are connect with the feed end of segmental arc 15b.
On the link position of above-mentioned segmental arc 15b and linkage section 12b, the end extending direction and linkage section of segmental arc 15b 12b is in 10-35 ° of angle, i.e., segmental arc here is with 10-35 ° of incision straight section 15a, in this way also for allowing Dual-Phrase Distribution of Gas olid Flow more smooth, the impact of reduction and tube wall.
Powder delivery system includes defeated grey mode, which includes:
Powder fluidization device, for gas and powder to be mixed into Dual-Phrase Distribution of Gas olid；
Transfer passage, for target point to be transported in Dual-Phrase Distribution of Gas olid；
It helps and blows air supply passage 13, connect with transfer passage；
It is above-mentioned help blow air supply passage 13, the air inlet pipe 14 of powder fluidization device connects same compressed air source unit；
Under defeated grey mode, gas blows air supply passage 13 and is filled with transfer passage 12 above-mentioned powder delivery system by helping.
Certainly tee tube here (can be the linkage section of transfer passage 12 including straight sections as an individual components 12b) with bent portion (can be the segmental arc 15b of discharge nozzle 15), the both ends of above-mentioned straight sections, which are separately connected to help, blows air supply passage 13 and transfer passage 12 conveying section 12a；In the middle part of the connecting straight section (s) of above-mentioned arc end one end, the other end connects above-mentioned discharge nozzle 15。
When tee tube is as an individual components, the tee tube by flange respectively with diffusing air current diffusion chamber 100 Discharge nozzle 15, transfer passage 12 and helping blows the connection of air supply passage 13.
Above-mentioned to help the air inlet pipe 14 for blowing 13 one end of air supply passage connection powder fluidization device, the other end is connected to transfer passage, It blows air supply passage 13 in this way and connect same compressed air source unit with the air inlet pipe 14 of powder fluidization device also for allowing help.Certainly, It can be separately connected different compressed air source units, i.e., above-mentioned help blows the second compressed air source unit of 13 one end of air supply passage connection, and the other end connects Logical transfer passage；Above-mentioned air inlet pipe 14 connects the first compressed air source unit.
This powder delivery system is used in blast furnace gas dust remover, which may include:
Storehouse pump 1, is provided with fluidizer, for the fluidisation kinetic energy gas using input storehouse pump to the powder fluidization in the pump of storehouse；
Storehouse pumps release filter structure 8, is set on the exhaust pipe 6 of storehouse pump 1 and purified gas wing passage 7；
Double-jacket tube pneumatic conveying channel 12 receives storehouse 16 with powder and connect；The discharge nozzle 15 and double-jacket tube gas of above-mentioned storehouse pump Power transfer passage 12 is connected to；The opening spacing of the interior other pipe in double-jacket tube pneumatic conveying channel 12 here is 440-680mm.
It helps and blows air supply passage 13, connect with double-jacket tube pneumatic conveying channel 12, help and blow the configuration aid blowing valve of air supply passage 13, Blow pressure contracting gas boosting relay is helped, realizes long distance delivery.
The air inlet pipe 14 of above-mentioned storehouse pump helps the compressed air source unit for blowing the connection offer compressed gas of air supply passage 13.
That is the discharge nozzle 15 of the powder of storehouse pump connects the double-jacket tube pneumatic conveying channel 12 for conveying powder；The pump in storehouse Discharge nozzle 15 is separately connected powder and receives storehouse 16 and blowback air access tube 10, and the blowback air access tube 10 is by purge gas to out Expects pipe 15 carries out block clearing.
Manifold pressure variation is smaller when the defeated ash in double-jacket tube pneumatic conveying channel 12, have using improve transportation concentration and it is long away from From conveying, although double-jacket tube pneumatic conveying channel 12 can blow stifled automatically, blowback air access tube 10 is accessed, can quickly realize master Dynamic block clearing.Storehouse is pumped out to the low pressure dense phase powder come to convey to terminal in due course turbulent bolt shape, helps the mode of blowing to keep in due course The not dust stratification, and the conveying distance of extension dense phase powder bolt along Cheng Guandao.
It is helped by setting and blows air supply passage 13, in double-jacket tube pneumatic conveying channel 12 under unimpeded function, carried out actively Tonifying Qi block clearing also reduces because because improving from the delay time of unimpeded function block clearing in double-jacket tube pneumatic conveying channel 12 Block clearing efficiency.
The net gas outlet end 802 of above-mentioned storehouse pump release filter structure 8 connects above-mentioned compressed air source unit, which is above-mentioned
Above-mentioned double-jacket tube pneumatic conveying channel 12 includes conveying section 12a and linkage section 12b, the double-jacket tube pneumatic conveying channel The inner bypass pipe 1201 being nested in Pneumatic ash conveying supervisor in 12 is located on the 12a of conveying section, and above-mentioned linkage section 12b goes out with storehouse pump Expects pipe 15 connects.It is separated by the way that linkage section 12b and conveying section 12a is arranged, to facilitate installation, as pumped linkage section 12b and storehouse Discharge nozzle 15 makes the three-dimensional through-pipe structure being integrated, and the connection for avoiding the discharge nozzle 15 of linkage section 12b and storehouse pump is unstable, close The problem of Feng Buyan avoids and realizes connection to the discharge nozzle 15 of linkage section 12b and storehouse pump by the way of welding.
The part that the discharge nozzle 15 of above-mentioned storehouse pump is located at outside storehouse pump 1 includes straight section 15a and segmental arc 15b, above-mentioned arc The extending direction of section 15b input end and the extending direction of straight section 15a are in 120-160 ° of angle.It is arranged under the angle, to ensure Gas-particle two-phase object will not cause biggish abrasion to tube wall in commutation.Here the extension side of segmental arc 15b inlet part To the tangential direction of i.e. segmental arc 15b input end.The linkage section 12b of above-mentioned segmental arc 15b and double-jacket tube pneumatic conveying channel 12 Entrance angle be 10-35 °, to reduce abrasion of the gas-particle two-phase object to tube wall.
Above-mentioned to help the air inlet pipe 14 for blowing 13 one end connections storehouse of air supply passage pump, the other end is connected to double-jacket tube pneumatic conveying channel 12, in this way to ensure the valve of the air inlet pipe 14 pumped in storehouse as helping the main valve for blowing air supply passage 13.
Desorption tube 11 of net gas outlet end 802 setting of above-mentioned storehouse pump release filter structure 8 for release, above-mentioned desorption tube Valve is provided on 11.
Above-mentioned fluidizer include be set to storehouse pump 1 lower end for connecting the bottom cover 2 of air inlet pipe 14, on above-mentioned bottom cover 2 End is provided with bottom plate 101, and storehouse pumps 1 lower end and is provided with top plate 201, and above-mentioned bottom plate 101 clamps powder with top plate 201 and air-permeable layer is isolated 3 form above-mentioned fluidizer.The Primordial Qi inlet end of above-mentioned storehouse pump release filter structure 8 is set to the upper end of storehouse pump 1.To realize 14 different location of air inlet pipe on the pump of storehouse compared to storehouse pump carries out power-assisted tonifying Qi.
As Figure 11 still only need to be in double-jacket tube pneumatic conveying channel 12 when blast furnace gas dust remover is provided with multiple groups End setting, which helps, blows air supply passage 13, blows air supply passage 13 from helping to blow one group nearest of discharge nozzle 15 of air supply passage 13 and help Setting setting as shown in Figure 2, the storehouse in subsequent multiple groups blast furnace gas dust remover pump out expects pipe 15 and are set as connecting It is all connected with the mode of conveying section 12a before and after section 12b to connect, i.e., the front end linkage section 12b connection here is upper one group and goes out The conveying section 12a for the double-jacket tube pneumatic carrier 12 that expects pipe 15 connects.
The power-assisted air compensating system to the transfer passage tonifying Qi is provided on above-mentioned transfer passage；
The power-assisted air compensating system includes:
Pressure sensing cell, including be distributed on the transfer passage and be respectively used to channels different on the transfer passage The detection device that air pressure in section is detected；
Tonifying Qi unit, including be distributed on the transfer passage and respectively to coping with different channel sections on the transfer passage Tonifying Qi the input pipe 13a, the tonifying Qi input pipe 13a for carrying out tonifying Qi pass through control device communication link with corresponding detection device It connects.
In the transmission process of Dual-Phrase Distribution of Gas olid, when pressure sensing cell detects the signal decrease of certain channel section or is lower than When some given threshold, that is, indicate that corresponding channel section occurs to block or level off to blocking, control device receives detection letter Number, then tonifying Qi unit is controlled, compressed gas is filled in corresponding channel section from tonifying Qi input pipe 13a, is completed clear It is stifled.In implementation, in long distance delivery, it can be provided with to the tonifying Qi of 12 tonifying Qi of transfer passage and input on transfer passage 12 Pipe 13a is additionally provided in front of tonifying Qi input pipe 13a on the direction of Dual-Phrase Distribution of Gas olid flowing on the transfer passage 12 Pressure-detecting device.The distance between power-assisted block clearing unit is configured according to actual needs.Transfer passage 12 preferably uses Double-jacket tube transfer passage.
Here the purpose of pressure-detecting device is arranged is the transport status that powder is detected in the transmission process of powder, situation, It is such as blocked at a certain section of transfer passage, the pressure of the pressure-detecting device detection after the blocking position will will appear It is abnormal, the tonifying Qi input pipe 13a before being located at the blocking position is at this moment opened, blowing block clearing is carried out to the blocking section.In this way It is to be segmented tonifying Qi, and each section of tonifying Qi operation is controlled according to the pressure detecting of corresponding pipeline section respectively, to maintain pneumatic transporting The necessary power of ash.
Powder delivery system and powder storage device, wherein powder delivery system, comprising:
Powder receives storehouse 16, for receiving powder；
Pneumatic conveying channel receives storehouse 16 for powder pneumatic to be delivered to powder, can be logical for double-jacket tube pneumatic conveying Road；And
Press filtering device is unloaded, powder is set to and receives on storehouse 16 and for discharging the gas in powder reception storehouse 16.
Press filtering device is unloaded by the way that setting is above-mentioned, after powder conveying to powder receives storehouse 16, ensures that powder receives storehouse Air pressure in 16 meets the condition of pneumatic conveying, while preventing powder from releasing powder and receiving storehouse 16, to reach the mesh of release, environmental protection 's.
The above-mentioned filter element for unloading press filtering device is set to the top that powder receives storehouse 16.In this way, can reduce because Cause to unload the powder amount intercepted on press filtering device for stress-relief process, also convenient intercepted powder relies on self weight to drop back into powder simultaneously Body receives storehouse 16.
Above-mentioned press filtering device gas release end of unloading is provided with gas suction device, which can be blower 18, in this way the air pressure in storehouse 16 can be received to powder and adjusted, this powder delivery system is improved by controlling blower 18 Flexibility.Here vacuum machine can also be set as needed in gas release end.
Above-mentioned powder receives storehouse 16 and connects powder fluidization device by pneumatic conveying channel, connects on above-mentioned pneumatic conveying channel Enter the oriented pneumatic conveying channel and fill into helping for gas to blow air supply passage 13.
Above-mentioned powder receives storehouse 16 or powder receives unloading on storehouse 16 and pressure-detecting device is arranged in press filtering device.Here Pressure-detecting device be arranged when unloading in press filtering device, preferably respectively in the net air cavity for unloading press filtering device and Primordial Qi It is intracavitary to be respectively provided with.Here it can learn that powder receives storehouse and receives powder by net air cavity and pressure detecting that Primordial Qi is intracavitary The case where, i.e., whether receive, whether occur abnormal etc., such as stated pressure differential, when pressure difference is in designated value, just learns that powder connects Harvest situations such as finishing or receive powder appearance exception, whether blocking.Since using pneumatic conveying, pressure detecting Obtained signal is fluctuation signal, and it is abnormal that exception here refers to that fluctuation signal frequency occurs；Lead to alternatively, signal interruption still conveys Road still detects pressure, and the pressure value and powder receive storehouse 16, powder receives and unloads inspection in press filtering device on storehouse 16 Pressure difference value exception of survey etc..
Powder storage device, the press filtration that unloads for receiving storehouse 16 including powder and receiving gas in storehouse 16 for discharging powder fill It sets, above-mentioned powder receives storehouse 16 and is connected to by unloading press filtering device with powder reception 16 external environment of storehouse.Here unload press filtration Filter element in device can be powder isolation air-permeable layer 3 above-mentioned, be also possible to dust-removal cloth-bag etc..It here can be preferred Select powder isolation air-permeable layer 3 above-mentioned.
Powder storage device includes that inner cavity is the storage device main body that powder receives storehouse 16, is arranged in the storage device main body There is super-pressure safety valve, the level-sensing device for detecting high lower bound material position is provided in the storage device main body.The storage device main body Including upper and lower part, temperature-detecting device can be set on above-mentioned upper and lower part, in real time to storage device main body Temperature detection is carried out, upper and lower part is respectively provided with, and more comprehensively to obtain temperature information, prevents temperature caused by the deposition of powder Being unevenly distributed keeps temperature detection inaccurate.
Here the lower end that powder receives storehouse 16 is provided with the valve for powder to be discharged, corresponding setting below the valve There is the humidifier for improving powder humidity.
The effect pressed that the release filter structure of powder fluidization device in the application also acts as.Powder fluidization device For release filter structure for being arranged in powder fluidization device, the net gas end of above-mentioned release filter structure is selectable to be communicated with the One pressure relief pipeline and the second pressure relief pipeline, above-mentioned first pressure relief pipeline and the second pressure relief pipeline have pressure difference.
It is convenient that difference is made in different air pressure demands to powder fluidization device by the way that this release filter structure is arranged Net gas end docking mode so that it is convenient to realize powder fluidization device in powder receive, powder output during release, together Shi Shixian is in the stress-relief process of powder fluidization device to the interception of powder.
Above-mentioned first pressure relief pipeline is connected to net gas transfer passage, applies in blast furnace gas dust remover, the net gas conveying Channel can be purified gas wing passage 7, and the output end of above-mentioned second pressure relief pipeline is release end, be set on desorption tube 11.With It is associated with the valve of discharging is used on powder fluidization device in the valve for controlling above-mentioned first pressure relief pipeline opening and closing.I.e. in powder When the powder reception pattern of body fluidizer, release, the opening and closing and powder flow of the first pressure relief pipeline are carried out to powder fluidization device It is corresponding to disguise the powder reception pattern set.On valve and powder fluidization device for controlling above-mentioned second pressure relief pipeline opening and closing The switch for being opened and closed powder output mode is associated.I.e. in the powder output mode of powder fluidization device, to powder fluidization device Release is carried out, the opening and closing of the second pressure relief pipeline and the powder output mode of powder fluidization device are corresponding.
Above-mentioned net gas end is connected with blowback air access tube 10.For control valve that above-mentioned blowback air access tube 10 is opened and closed with The switch of opening and closing powder fluidization mode on powder fluidization device is associated.Be in this way in order to make blowback air access tube 10 as into The power-assisted tonifying Qi pipeline of tracheae 14, while blowback work is carried out, it achieves many things at one stroke, and charge air flow diffusion chamber 200 is made to possess two The air inlet of a different location.
Above-mentioned blowback air access tube 10 with for the charge air flow diffusion chamber 200 to powder fluidization device input gas into Tracheae 14 connects same compressed air source unit, is controlled in this way with facilitating.
It is provided with the peephole positioned at its underpart on above-mentioned release filter structure, is provided on the peephole for blocking this The blind flange of peephole.Release filter structure further includes the end cap positioned at the release filter structure upper end, which is blind plate method It is blue.
A kind of particulate matter method for sieving is additionally provided in the application, and particulate matter is sieved using powder fluidization device；
Particulate matter method for sieving, comprising:
Powder to be conveyed is received using the powder reception pattern of powder fluidization device；
Gas is set to be mixed into gas-solid through air intake structure and powder to be conveyed using the powder fluidization mode of powder fluidization device Two phase flow；
Dual-Phrase Distribution of Gas olid is set to transport to target point by discharge nozzle using the powder output mode of powder fluidization device；
Wherein, using chamber where being mixed into Dual-Phrase Distribution of Gas olid before powder fluidization mode or in using powder fluidization mode Set specified atmospheric pressure value or atmospheric pressure value section in vivo, using keeping stable gas pressure in specified atmospheric pressure value in powder fluidization mode or In atmospheric pressure value section, keeps the air pressure in specified atmospheric pressure value or atmospheric pressure value section in powder output mode and to extract this specified Corresponding Dual-Phrase Distribution of Gas olid under atmospheric pressure value or atmospheric pressure value section.
Under different air pressures, the suspended state of the powder of different weight can be different, that is, pass through environment where control powder In air pressure, environment where powder is layered, part powder suspends under the air pressure, and part powder sinks in the air pressure It forms sediment, by pneumatic conveying, powder required for then extracting.
Pump-line is set on above-mentioned powder fluidization device, and above-mentioned holding stable gas pressure is in specified atmospheric pressure value or atmospheric pressure value area Interior operation includes being exported by the gas of the gas input and pump-line that control air intake structure to keep stable gas pressure to exist In specified atmospheric pressure value or atmospheric pressure value section.In this way to ensure during exporting powder, air pressure is maintained at specified atmospheric pressure value Or in atmospheric pressure value section, accomplish dynamic equilibrium, required specified powder can be reliably extracted to ensure.
Above-mentioned powder fluidization device includes that air-permeable layer 3 is isolated in the powder passed through for gas, and air-permeable layer 3 is isolated in above-mentioned powder Air intake structure is divided into charge air flow diffusion chamber 200 and diffusing air current diffusion chamber 100, above-mentioned gas is through charge air flow diffusion chamber The formation diffusing air current of air-permeable layer 3 is isolated by powder after 200 and acts on particulate matter to be conveyed in diffusing air current diffusion chamber 100 To form above-mentioned Dual-Phrase Distribution of Gas olid.
Using in powder output mode, particulate cascade is carried out by place height to the particulate matter in powder fluidization device It extracts.
Powder fluidization device, including powder fluidization mode and powder output mode, the fluidizer include:
Powder be isolated air-permeable layer 3, under powder fluidization mode obstruct particulate matter simultaneously allow gas by with particulate matter Mixing；
Diffusing air current diffusion chamber 100 is located at powder and 3 one side of air-permeable layer is isolated, and the another side of air-permeable layer 3 is isolated in powder Corresponding charge air flow diffusion chamber 200；
Extracting channel 19, for extracting 100 endoparticle object of diffusing air current diffusion chamber under powder output mode.Here pumping Take the outlet end in channel 19 that can connect double-jacket tube pneumatic conveying channel 12.
This powder fluidization device serves not only as fluidization conveying equipment, is also used as the screening plant of particulate matter.Pass through pumping Channel 19 is taken, to the powder being layered in diffusing air current diffusion chamber 100, is extracted, required powder is obtained.Gas-particle two-phase Particulate matter in stream remains flow regime, is sieved under this flow regime, makes particulate matter can not only be or else under air pressure It is sieved, but also becoming very efficient to the conveying of the particulate matter of screening.
Above-mentioned powder isolation air-permeable layer 3 includes the porous breathable film 302 that particulate matter is blocked in its surface.
Powder fluidization device further includes that powder receives storehouse 16, is provided with the powder for pump drainage on powder reception storehouse 16 and connects The gas suction device of gas in storehouse 16 is received, control above-mentioned gas suction unit makes powder receive storehouse 16 and diffusing air current diffusion chamber 100 realize pressure difference drainage, are flexibly controlled with facilitating the air pressure in diffusing air current diffusion chamber 100, gas suction here Device can use blower 18.
It is arranged on above-mentioned diffusing air current diffusion chamber 100 there are two the extracting channel 19 along gravity direction arrangement, to facilitate pair The powder of different hoverheights is extracted.Referring to Fig.1 2, present embodiment uses two extracting channels 19, this two extract it is logical Road 19 can connect same powder and receive storehouse 16, can also be connected respectively in different powder reception devices.Aforementioned double-jacket tube Pneumatic conveying channel 12, which can connect to help, blows the conveying of 13 power-assisted of air supply passage and block clearing.
It is provided with pressure-detecting device in above-mentioned extracting channel 19, may also set up in diffusing air current diffusion chamber 100 here Pressure-detecting device.
Powder fluidization device further includes the pressure control for making 100 pressure of diffusing air current diffusion chamber be positively retained at specified air pressure Molding block, unload laminated structure of the above-mentioned pressure control module respectively with the air intake structure of powder fluidization device, powder fluidization device lead to Letter connection.
This powder fluidization device is set, particulate matter is carried out by the control to air pressure using this particulate matter method for sieving Screening has the characteristics that transfer efficiency is high compared to using method for sieving, this method such as sieve, i.e., by by gas and powder (particulate matter) is mixed to form Dual-Phrase Distribution of Gas olid, and powder is made, in flow regime, it is direct to open extracting channel 19 in screening process The particulate matter for suspending or precipitating is extracted, transfer efficiency is high.
The outlet end of above-mentioned transfer passage is connected with powder and receives storehouse 16, and above-mentioned powder, which receives, to be provided on storehouse 16 for releasing Powder is put to receive gas in storehouse 16 and prevent what powder from releasing to unload press filtering device.
The above-mentioned gas release end for unloading press filtering device is provided with for receiving the vacuum pump 21 that storehouse vacuumizes to powder.
The application powder fluidization device can be used as a kind of powder drying device, including drying mode and transport model, above-mentioned Powder drying device includes:
Air intake structure, for receiving gas and gas and powder being made to be mixed to get Dual-Phrase Distribution of Gas olid；
Discharge structure, for powder drying device to be discharged in the moisture content in Dual-Phrase Distribution of Gas olid；
Detection components, for being detected to the humidity of Dual-Phrase Distribution of Gas olid in the drying process.
By the way that this powder drying device is arranged, to powder by way of making gas and powder be mixed to form Dual-Phrase Distribution of Gas olid It is dried, compared to by the way of directly being heated to powder, is dried in a manner of foring Dual-Phrase Distribution of Gas olid, it is convenient It is high-efficient to the direct pneumatic conveying of powder.
Above-mentioned discharge structure includes the desorption tube 11 that connection accommodates the diffusing air current diffusion chamber 100 of Dual-Phrase Distribution of Gas olid, with side Just the moisture content in diffusing air current diffusion chamber 100 is discharged.
Above-mentioned detection components include the humidity detector 20 that discharge structure outlet end is arranged in, Humidity Detection dress here Setting 20 can be set on desorption tube 11, in this way the water content in the completeness and powder to facilitate detection drying.Specifically, Discharge structure includes exhaust pipe 6, and humidity detector 20 also can be set on exhaust pipe 6.
Blower 18 or vacuum machine can be set in above-mentioned desorption tube 11, desorption tube is become pump-line, on pump-line 20 pairs of humidity detector extractions gases into detection.By the way that pump-line is arranged, diffusing air current diffusion chamber is extracted out to improve The efficiency of powder moisture content in 100.
Air intake structure includes the air inlet pipe 14 for connecting hot gas gas source, naturally it is also possible to by the side that heating device is arranged Formula to come after gas heats enter charge air flow diffusion chamber 200；Hot gas gas is connected by setting heating device or air inlet pipe 14 Source accelerates the evaporation of moisture content in powder.
Powder drying device further includes the cavity for accommodating Dual-Phrase Distribution of Gas olid, can also be provided with and be used in this cavity The heating device of powder is submerged and contacts, directly contact powder, to powder drying.
Powder drying device further includes the conveying device for conveying powder, and above-mentioned detection components are opened with control conveying device The control module communication connection closed.Here conveying device may include double-jacket tube pneumatic conveying channel 12 and export powder Discharge nozzle 15, after detection components detect signal, control module control double-jacket tube pneumatic conveying channel 12 and discharge nozzle 15 are opened Begin conveying powder, and powder here is flowed with being present in Dual-Phrase Distribution of Gas olid.
In cavity for accommodating Dual-Phrase Distribution of Gas olid, the heating for submerging and contacting powder can be set in the cavity Device.
Above-mentioned air intake structure includes powder isolation air-permeable layer 3, and powder fluidization structure is divided by above-mentioned powder isolation air-permeable layer 3 Charge air flow diffusion chamber 200 and diffusing air current diffusion chamber 100, above-mentioned gas after charge air flow diffusion chamber 200 by powder every Diffusing air current is formed from air-permeable layer 3 and acts on powder to be conveyed in diffusing air current diffusion chamber 100 to form above-mentioned gas-solid Two phase flow.
Above-mentioned powder isolation air-permeable layer 3 includes the porous breathable film 302 that powder is blocked in its surface.Porous breathable is thin Film 302 is the film for treating the isolation rate of partial size >=0.1m dust in gas 99% or more.The hole of porous breathable film 302 Density is 5 × 108/cm2~30 × 108/cm2。
Powder drying device can also include the clamping position structure for above-mentioned powder isolation air-permeable layer 3 to be formed, on Stating clamping position structure is heating device.It is directly heated when passing the gas through powder isolation air-permeable layer 3 in this way.Specifically it can be By being powered, clamping position structure in modes such as clamping position structure heating pipe built-ins.Can by above-mentioned top plate 201, Bottom plate 101 is used as heating device, is heated in this way to the gas passed through, the powder for contacting the bottom plate 101, this kind of side Clamping position structure is directly changed to heating device by formula, it may not be necessary to which auxiliary increases the heating device of gas.
Certainly, as described above, also various ways are dried to powder；
For example, heating compressed gas before entering powder fluidization device, heated gas passes through air intake structure It mixes with powder, in fluid mapper process, powder is dried；
For example, heat preservation sandwich layer is set on the apparatus main body (storehouse pump) of powder drying device, flowing heat transfer medium in interlayer, Powder and gas are heated by way of heat transfer, naturally it is also possible to be arranged jet chimney heat tracing mode carry out；
For example, by heating to powder, it can be that heating is added in apparatus main body (storehouse pump) as above-mentioned Device, directly contact powder are also possible to powder supplied materials powder drying processing, that is, carry out before entering apparatus main body preparatory It is dried.
During transportation, it can also be arranged on transfer passage attemperator (such as heat preservation sandwich layer, jet chimney), make Dual-Phrase Distribution of Gas olid still keeps higher degree of drying during transportation.
Related content of the invention is illustrated above.Those of ordinary skill in the art are in the feelings illustrated based on these The present invention will be realized under condition.Based on above content of the invention, those of ordinary skill in the art are not making creativeness Every other embodiment obtained, should fall within the scope of the present invention under the premise of labour.

Claims (10)

1. the delivery method of powder characterized by comprising
Powder to be conveyed is received using the powder reception pattern of powder fluidization device；
Gas is set to be mixed into gas-particle two-phase through air intake structure and powder to be conveyed using the powder fluidization mode of powder fluidization device Stream；
Dual-Phrase Distribution of Gas olid is set to transport to target point by transfer passage using the powder output mode of powder fluidization device；
Wherein, the air intake structure includes that air-permeable layer is isolated in powder, and air intake structure is divided into air inlet by the powder isolation air-permeable layer Diffusion of gas stream chamber and diffusing air current diffusion chamber, the gas into air intake structure are isolated thoroughly after charge air flow diffusion chamber by powder Gas-bearing formation is separated into diffusing air current and acts on powder to be conveyed in diffusing air current diffusion chamber to form the Dual-Phrase Distribution of Gas olid.
2. the method as described in claim 1, which is characterized in that the powder isolation air-permeable layer includes can be by powder fluidization device In at least most of powder be blocked in the porous breathable film on one side surface.
3. method according to claim 2, which is characterized in that the porous breathable film is one kind to partial size in the powder Porous breathable film of the blocking rate of the powder of >=0.1m 99% or more.
4. method according to claim 2, which is characterized in that the porous breathable film is eptfe film.
5. method according to claim 2, which is characterized in that the powder isolation air-permeable layer includes to be arranged described porous The supporter of another side surface of gas film, the porous breathable film are attached on the supporter.
6. method as claimed in claim 5, which is characterized in that the supporter uses Ventilate cloth.
7. the method as described in any one of claim 1-6 claim, it is characterised in that: the air intake structure includes to set Be placed in powder isolation air-permeable layer outside clamping position structure, the clamping position structure have be located at powder isolation air-permeable layer its First clamping part of one side surface, the second clamping that is that its other side of air-permeable layer is isolated positioned at powder and being connect with the first clamping part Portion is provided with opposite hole on first clamping part and the second clamping part.
8. the method as described in any one of claim 1-6 claim, it is characterised in that: the Dual-Phrase Distribution of Gas olid it is defeated Out pressure be no more than 0.25MPa, 0.24MPa, 0.23MPa, 0.22MPa, 0.21MPa, 0.2MPa, 0.19MPa, 0.18, MPa, 0.17MPa、0.16MPa、0.15MPa、0.14MPa、0.13MPa、0.12MPa、0.11MPa、0.1MPa、0.09MPa、 0.08MPa, 0.07MPa, 0.06MPa or 0.05MPa.
9. the method as described in any one of claim 1-6 claim, it is characterised in that: the diffusing air current diffusion chamber It is connected to first object point and the second target point, air pressure in the second target point of air pressure > in the first object point；
Using powder fluidization device powder reception pattern when, so that diffusing air current diffusion chamber is passed through equal press filtration structure and the first mesh Punctuate connection；
Using powder fluidization device powder fluidization mode when, so that diffusing air current diffusion chamber is passed through equal press filtration structure and the second mesh Punctuate connection.
10. the method as described in any one of claim 1-6 claim, it is characterised in that: the target point is to receive The powder of powder receives storehouse, and the powder, which receives to be provided on storehouse, unloads press filtering device；
Using powder fluidization device powder output mode when, Dual-Phrase Distribution of Gas olid reach powder receive storehouse when, portion gas passes through Unload press filtering device release.
CN201910155369.2A 2019-03-01 2019-03-01 The delivery method of powder Pending CN109879056A (en)

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