CN113105920A - Particle bed dust removal device - Google Patents
Particle bed dust removal device Download PDFInfo
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- CN113105920A CN113105920A CN202010023413.7A CN202010023413A CN113105920A CN 113105920 A CN113105920 A CN 113105920A CN 202010023413 A CN202010023413 A CN 202010023413A CN 113105920 A CN113105920 A CN 113105920A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/4227—Manipulating filters or filter elements, e.g. handles or extracting tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/446—Auxiliary equipment or operation thereof controlling filtration by pressure measuring
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/002—Removal of contaminants
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
- C10K1/024—Dust removal by filtration
Abstract
The invention relates to the field of chemical equipment, and discloses a particle bed dust removal device which comprises a body, wherein the body is provided with an internal cavity, a gas inlet, a gas outlet, a dust removal material inlet and a dust removal material outlet are formed in the body and are communicated with the internal cavity, the gas inlet and the gas outlet are arranged at intervals along a first horizontal direction, the dust removal material inlet is positioned above the dust removal material outlet, the internal cavity comprises a bed layer cavity, the bed layer cavity is positioned between the dust removal material inlet and the dust removal material outlet along the vertical direction and is positioned between the gas inlet and the gas outlet along the first horizontal direction, the device also comprises a discharge screw arranged in the internal cavity, the discharge screw is positioned below the bed layer cavity and is adjacent to the dust removal material outlet, the particle bed dust removal device also comprises an auxiliary discharge screw conveying mechanism, and the auxiliary discharge screw conveying mechanism is arranged between the discharge screw and the bed layer cavity, the auxiliary discharging spiral conveying mechanism and the discharging spiral extend in the same direction and are positioned right above the discharging spiral.
Description
Technical Field
The invention relates to the field of chemical equipment, in particular to a particle bed dust removal device.
Background
The pyrolysis gas of coal contains a large amount of dust and tar. If these tars and dust are not removed from the coal pyrolysis gases in a timely manner, once the temperature is reduced, the dust will stick to the condensed tars, which can cause the pyrolysis system to be forced down. If the dust in the pyrolysis gas is not sufficiently removed, the dust can contaminate or clog subsequent coal tar processing equipment, reducing the quality of the coal tar.
The device that is used for coal pyrolysis gas to remove dust now uses granule bed dust collector as the main, current granule bed dust collector mostly includes the body, the inside cavity of body includes the bed layer chamber, be provided with gas feed on the body, gas outlet, dust removal material import and dust removal material export, particle material gets into inside cavity and falls into the bed layer chamber from dust removal material import for the dust removal, the position that lies in bed layer chamber below in inside cavity is provided with ejection of compact spiral, dust removal material export sets up in the exit end of ejection of compact spiral, the material of bed intracavity is removing dust to the coal pyrolysis gas that enters into inside cavity from gas feed and is removing tar finally via ejection of compact spiral delivery to dust removal material export discharge, and gas after the purification then discharges through gas outlet.
When the used dedusting materials are discharged from the dedusting material outlet through the discharging screw, the materials on the lower side of the bed layer cavity are easy to continuously accumulate at certain parts, and the normal operation of the whole device is influenced; and after the dedusting materials are adsorbed to the tar in the high-temperature pyrolysis gas, the viscosity is obviously increased, so that the materials are easier to stack in the discharging process.
Disclosure of Invention
The invention aims to overcome the problems in the prior art, and provides a particle bed dust removal device which is more beneficial to stable and uniform discharging, so that the condition of material accumulation at the lower part of a bed layer cavity is effectively reduced.
In order to achieve the above object, the present invention provides a granular bed dust removing device, which comprises a body having an internal cavity, wherein the body is provided with a gas inlet, a gas outlet, a dust removing material inlet and a dust removing material outlet, the gas inlet, the gas outlet, the dust removing material inlet and the dust removing material outlet are all communicated with the internal cavity, the gas inlet and the gas outlet are arranged at intervals along a first horizontal direction, the dust removing material inlet is positioned above the dust removing material outlet, the internal cavity comprises a bed layer cavity, the bed layer cavity is positioned between the dust removing material inlet and the dust removing material outlet along a vertical direction, the bed layer cavity is positioned between the gas inlet and the gas outlet along the first horizontal direction, the granular bed dust removing device further comprises a discharging screw arranged in the internal cavity, the particle bed dust removing device comprises a bed layer cavity, a material discharging spiral, a dust removing material outlet, a particle bed dust removing device and an auxiliary material discharging spiral conveying mechanism, wherein the material discharging spiral is positioned below the bed layer cavity and close to the dust removing material outlet, the auxiliary material discharging spiral conveying mechanism is arranged between the material discharging spiral and the bed layer cavity, and the auxiliary material discharging spiral conveying mechanism and the material discharging spiral extend in the same direction and are positioned right above the material discharging spiral.
Preferably, the particulate bed dust removal device further comprises a feed screw disposed in the internal cavity, the feed screw being adjacent the dust removal material outlet.
Preferably, the body is provided with a flash port, and the flash port is matched with the part of the feeding screw, which is far away from the dust removal material inlet.
Preferably, the body further comprises an upper protruding portion protruding in the horizontal direction, the upper protruding portion is located above the bed layer cavity, a portion of the feeding screw, which is far away from the dedusting material inlet, is located in the upper protruding portion, and the overflow port is arranged at the bottom of the upper protruding portion.
Preferably, the body is provided with a lower protruding part protruding in the horizontal direction, the part of the discharging spiral adjacent to the dedusting material outlet is positioned in the lower protruding part, and the dedusting material outlet is arranged at the bottom of the lower protruding part.
Preferably, the inner cavity further comprises a gas inlet cavity between the gas inlet and the bed cavity and a gas outlet cavity between the gas outlet and the bed cavity, the particle bed dust removing device further comprises a control unit, a first pressure sensor arranged in the gas inlet cavity and a second pressure sensor arranged in the gas outlet cavity, a pressure signal input end of the control unit is electrically connected with the first pressure sensor and the second pressure sensor, and a first signal output end is electrically connected with the discharging spiral.
Preferably, a plurality of hopper portions are formed at equal intervals on the screw blade of the auxiliary discharge screw conveyor.
Preferably, the auxiliary discharge screw conveyor structure extends in a second horizontal direction, the auxiliary discharge screw conveyor structure extends through the entire internal cavity in the second horizontal direction, and the auxiliary discharge screw conveyor structure also extends substantially through the entire internal cavity in a direction perpendicular to the second horizontal direction.
Preferably, the auxiliary discharge screw conveyor mechanism and the discharge screw each comprise a rotating shaft and a screw blade connected to the rotating shaft, and the volume required for filling the gaps between the screw blades of the discharge screw with the material in a single pitch is V1, and the volume required for filling the gaps between the screw blades of the auxiliary discharge screw conveyor mechanism with the material in a single pitch is V2; the volume of the materials conveyed by the discharging screw in unit time is V1, the volume of the materials conveyed by the auxiliary discharging screw conveying mechanism in unit time is V2, and V1/V2 is less than or equal to V1/V2.
Preferably, the pitch of the part of the discharge screw corresponding to the auxiliary discharge screw conveying mechanism is equal to the pitch of the auxiliary discharge screw conveying mechanism and is L, and the number of turns of the helical blade on the part of the discharge screw corresponding to the auxiliary discharge screw conveying mechanism around the rotating shaft of the discharge screw is equal to the number of turns of the helical blade on the auxiliary discharge screw conveying mechanism around the rotating shaft of the discharge screw conveying mechanism and is n; and the conveying speed and the conveying direction of the discharging screw and the auxiliary discharging screw conveying mechanism to the dedusting materials are the same, so that V2 is not more than V1/n.
Through above-mentioned technical scheme, during the granule material gets into inside cavity from the dust removal material import for the dust removal, fall to the bed chamber in, can pile up full high-temperature pyrolysis gas that lets in the coal from the gas inlet after dust removal uses the granule material in the bed chamber, this high-temperature pyrolysis gas removes dust in dust removal uses the granule material and removes the tar processing back and then discharges from the gas outlet, and the material of bed intracavity removes dust and removes the tar via the dust removal material export finally behind the coal high-temperature pyrolysis gas in the inside cavity. The particle bed dust removal device provided by the invention adopts a double-spiral structure to push discharging, and particularly comprises a discharging spiral and an auxiliary discharging spiral conveying mechanism which extends in the same direction as the discharging spiral and is positioned right above the discharging spiral, wherein the auxiliary discharging spiral conveying mechanism is used for helping the dust removal material which is most easily accumulated and is far away from the dust removal material outlet side to be continuously conveyed to the side, close to the dust removal material outlet, where the material is most easily discharged, so that the material accumulation problem at the lower part of a bed cavity is greatly relieved, and the stable and uniform discharging is more facilitated.
Drawings
FIG. 1 is a front view of a particulate bed dust collector according to an embodiment of the present invention;
fig. 2 is a side sectional view of the particulate bed dust collector of fig. 1.
Description of the reference numerals
10 body 11 internal cavity
12 gas inlet and 13 gas outlet
14 dust removal material inlet and 15 dust removal material outlet
16 bed layer cavity 17 flash port
18 upper projection 19 lower projection
110 gas inlet chamber 111 gas outlet chamber
112 dust removal deashing mouth 20 assists cloth screw conveying mechanism
30 feed screw 40 discharge screw
50 auxiliary discharging spiral conveying mechanism 51 hopper part
60 inlet louver 70 outlet louver
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A particulate bed dust removing apparatus according to an embodiment of the present invention will be described below with reference to the accompanying drawings.
The invention provides a particle bed dust removal device, which comprises a body 10, wherein the body 10 is provided with an internal cavity 11, the body 10 is provided with a gas inlet 12, a gas outlet 13, a dust removal material inlet 14 and a dust removal material outlet 15, the gas inlet 12, the gas outlet 13, the dust removal material inlet 14 and the dust removal material outlet 15 are all communicated with the internal cavity 11, the gas inlet 12 and the gas outlet 13 are arranged at intervals along a first horizontal direction, the dust removal material inlet 14 is positioned above the dust removal material outlet 15, the internal cavity 11 comprises a bed layer cavity 16, the bed layer cavity 16 is positioned between the dust removal material inlet 14 and the dust removal material outlet 15 along the vertical direction, the bed layer cavity 16 is positioned between the gas inlet 12 and the gas outlet 13 along the first horizontal direction, the particle bed dust removing device further comprises a discharging screw 40 arranged in the inner cavity 11, the discharging screw 40 is positioned below the bed layer cavity 16 and adjacent to the dust removing material outlet 15, the particle bed dust removing device further comprises an auxiliary discharging screw conveying mechanism 50, the auxiliary discharging screw conveying mechanism 50 is arranged between the discharging screw 40 and the bed layer cavity 16, and the auxiliary discharging screw conveying mechanism 50 and the discharging screw 40 extend in the same direction and are positioned right above the discharging screw 40.
In the particle bed dust removing device, the particle materials for dust removal enter the inner cavity 11 from the dust removing material inlet 14 and fall into the bed layer cavity 16, the particle materials for dust removal can be fully accumulated in the bed layer cavity 16, then the high-temperature pyrolysis gas of coal is introduced from the gas inlet 12, the high-temperature pyrolysis gas is discharged from the gas outlet 13 after being subjected to dust removal and tar removal treatment in the particle materials for dust removal, and the materials in the bed layer cavity are finally discharged from the dust removing material outlet 15 after being subjected to dust removal and tar removal on the high-temperature pyrolysis gas of coal in the inner cavity 11.
The inventor of the invention found that when the used dedusting materials are discharged from the dedusting material outlet 15 through the discharging screw 40, if the auxiliary discharging screw conveying mechanism 50 is not arranged, the dedusting materials closer to the dedusting material outlet 15 are easier to be conveyed and discharged by the discharging screw 40 preferentially along the axial direction of the discharging screw 40 under the dual influence of the discharging screw 40 and the gravity of the materials, and the materials far away from the dedusting material outlet 15 are continuously accumulated in the past, so that the normal operation of the whole device is influenced. Therefore, the particle bed dust removing device provided by the invention adopts a double-spiral structure to push discharging, and specifically comprises a discharging spiral 40 and an auxiliary discharging spiral conveying mechanism 50 which extends in the same direction as the discharging spiral 40 and is positioned right above the discharging spiral 40, wherein the auxiliary discharging spiral conveying mechanism 50 is used for helping the dust removing material which is most easily accumulated and is far away from the dust removing material outlet 15 side to be continuously conveyed to the side which is most easily discharged and is close to the dust removing material outlet 15 side, so that the material accumulation problem at the lower part of the bed layer cavity 16 is greatly relieved, and the stable and uniform discharging is facilitated.
Wherein, preferably, the auxiliary discharging spiral conveying mechanism 50 and the discharging spiral 40 both comprise a rotating shaft and spiral blades connected to the rotating shaft, the volume required for filling the gaps among the spiral blades of the discharging spiral 40 with materials in a single pitch is V1, and the volume required for filling the gaps among the spiral blades of the auxiliary discharging spiral conveying mechanism 50 with materials in a single pitch is V2; the volume of the materials conveyed by the discharging screw 40 in unit time is V1, the volume of the materials conveyed by the auxiliary discharging screw conveying mechanism 50 in unit time is V2, and V1/V2 is less than or equal to V1/V2.
In this embodiment, the material conveying capacity of the auxiliary discharging screw conveying mechanism 50 is ensured to be smaller than or equal to the material conveying capacity of the discharging screw 40, so that the situation that the discharging screw 40 cannot timely convey the material, which is close to the dust removal material outlet 15, out of the auxiliary discharging screw conveying mechanism 50 to cause material accumulation due to the fact that the material conveying capacity of the auxiliary discharging screw conveying mechanism 50 is too large is avoided. It will of course be appreciated that V1/V2 is preferably equal to V1/V2, where the material conveying capacity of the auxiliary discharge screw conveyor 50 matches the material conveying capacity of the discharge screw 40, allowing the discharge screw 40 to deliver material at maximum throughput while reducing material buildup.
And, specifically, as an easily understood embodiment, the screw pitch of the part of the discharging screw 40 corresponding to the auxiliary discharging screw conveying mechanism 50 is equal to that of the auxiliary discharging screw conveying mechanism 50 and is L, and the number of turns of the helical blade around the rotating shaft of the part of the discharging screw 40 corresponding to the auxiliary discharging screw conveying mechanism 50 is equal to that of the helical blade around the rotating shaft of the auxiliary discharging screw conveying mechanism 50 and is n; and the conveying speed and the conveying direction of the dust removal materials by the discharging screw 40 and the auxiliary discharging screw conveying mechanism 50 are the same, then V2 is not more than V1/n, and preferably V2 is not more than V1/n.
In this case, for example, for the outfeed spiral 40, it is assumed that it has an imaginary length of L, it will be appreciated that this virtual length gradually approaches the dusting material outlet 15 in a direction from left to right in figure 2 during rotation of the discharge screw 40, and in this process, every time the virtual length passes through a distance of L, the auxiliary discharging screw conveyor 50 adds the material amount of V1/n to the virtual length, and the total of n L passes through the length of the whole auxiliary discharging screw conveyor 50, therefore, the virtual length is filled with the material amount of V1, namely when the virtual length needs to be removed from the dedusting material outlet 15, the material volume is exactly full, and the dedusting material conveyed by the auxiliary discharging screw conveying mechanism 50 can be synchronously discharged through the discharging screw 40 without material accumulation.
Of course, it is understood that the conveying auxiliary discharging screw conveying mechanism 50 may have a conventional screw blade, and may be a single-ended screw, and may further have a modified screw blade, for example, alternatively, the screw blade of the auxiliary discharging screw conveying mechanism 50 may be formed with a plurality of hopper parts 51 at equal intervals, and the plurality of hopper parts 51 may also be distributed in a spiral line along the screw blade around the rotation axis. And more specifically, it may be formed that the auxiliary discharge screw 50 may be divided into n units in the axial direction by the length of the pitch L, and each unit includes one hopper part 51.
Preferably, the auxiliary discharge screw conveyor structure 50 extends in the second horizontal direction, then the auxiliary discharge screw conveyor structure 50 extends through the entire internal cavity 11 in the second horizontal direction, and the auxiliary discharge screw conveyor structure 50 also extends through substantially the entire internal cavity 11 in a direction perpendicular to the second horizontal direction (it is understood that there is a gap between the screw blade and the internal cavity 11 in order to ensure the normal rotation of the screw blade), so as to obtain a stable and uniform discharge effect. In other words, most of the dedusting material in the bed chamber 16 needs to be conveyed by the auxiliary discharging screw conveying structure 50 and then falls into the discharging screw 40 for conveying.
Preferably, in the particle bed dust removing device, the dust removing material inlet 14 and the dust removing material outlet 15 are arranged at an interval along a second horizontal direction, the particle bed dust removing device further includes an auxiliary material distribution screw conveyor 20, the auxiliary material distribution screw conveyor 20 is arranged in the internal cavity 11 and located at an upper portion or above the bed layer cavity 16, and the auxiliary material distribution screw conveyor 20 extends along the second horizontal direction.
In the granular bed dust removal device, the granular materials for dust removal enter the inner cavity 11 from the dust removal material inlet 14, are conveyed along the second horizontal direction by the auxiliary material distribution spiral conveying mechanism 20 and fall into the bed layer cavity 16 in the conveying process, and the conveying of the auxiliary material distribution spiral conveying mechanism 20 along the second horizontal direction is favorable for dust removal and tar removal of the materials to fall into the bed layer cavity 16 more uniformly along the second horizontal direction, so that the material distribution of the bed layer cavity is more uniform when the granular bed dust removal device is used, and the generation of material stacking angles is reduced; when the materials in the bed layer cavity 16 are gradually and uniformly accumulated and reach a full cavity state, the continuous rotation of the auxiliary material distribution spiral conveying mechanism 20 is blocked, so that whether the materials in the bed layer cavity 16 are fully distributed can be judged by monitoring the rotation state of the auxiliary material distribution spiral conveying mechanism 20, the material distribution is more uniform by combining the bed layer cavity 16, when the continuous rotation of the auxiliary material distribution spiral conveying mechanism 20 is blocked, the full cavity state of the dust removal and tar removal materials in the bed layer cavity 16 of the particle bed dust removal device is more ideal, and at the moment, the high-temperature pyrolysis gas which is introduced into the coal from the gas inlet 12 after the auxiliary material distribution spiral conveying mechanism 20 stops running is selected to be more favorable for obtaining an ideal dust removal effect, and the situation of high-temperature pyrolysis gas short circuit is avoided.
To current design at granule bed dust collector's internally mounted material level detection device, receive the influence of tar in the pyrolysis gas of coal, some material level detection devices exist the problem that detectivity and accuracy are lower, trouble many cost of maintenance are high easily, and other then need set up a plurality of check points in granule bed dust collector's inside for the cost is expensive. The particle bed dust removal device provided by the invention has the advantages that the effects of bed cavity material distribution homogenization and sufficient material level monitoring are simultaneously obtained by arranging the auxiliary material distribution spiral conveying mechanism 20, the accuracy is higher, and the construction cost is reduced.
The auxiliary cloth screw conveying mechanism 20 may include a rotating shaft extending in the second horizontal direction and a screw blade connected to the rotating shaft, and the screw blade of the auxiliary cloth screw conveying mechanism 20 may be a single-end screw.
As a simple way to monitor the rotation state of the auxiliary cloth screw conveying mechanism 20, by monitoring the working current of the auxiliary material distribution spiral conveying mechanism 20, when the material level in the bed layer cavity 16 reaches the full cavity degree, because the lower part is obstructed by the dust-removing and tar-removing materials, the rotation of the helical blade of the auxiliary material distribution helical conveying mechanism 20 is obstructed, at the moment, the current through the auxiliary material feeding screw 20 will suddenly increase significantly, i.e. if the current of the auxiliary material feeding screw 20 is continuously monitored, when the material level in the bed layer cavity 16 reaches the full cavity degree, the current of the auxiliary material distribution spiral conveying mechanism 20 has an obvious inflection point, therefore, when the material level in the bed layer cavity 16 reaches the full cavity degree can be judged by monitoring the current value of the auxiliary cloth spiral conveying mechanism 20 or monitoring the inflection point of the current curve of the auxiliary cloth spiral conveying mechanism 20.
Preferably, as an implementation manner, the particle bed dust removing device further includes a control unit, a driving motor for driving the auxiliary cloth spiral conveying mechanism 20 to rotate, and a current sensor for monitoring and transmitting an output current conveyed to the auxiliary cloth spiral conveying mechanism 20 by the driving motor, wherein a current signal input end of the control unit is electrically connected to the current sensor, and a second signal output end of the control unit is electrically connected to a switch of the driving motor.
The control unit controls the auxiliary cloth spiral conveying mechanism 20 by obtaining a current signal, and after the bed layer cavity 16 is full, the auxiliary cloth spiral conveying mechanism 20 is rotated to prevent damage, for example, the control unit is configured to transmit a closing instruction to the driving motor when an obvious inflection point appears on a current electric signal received from the current sensor. In addition, the control unit may further send a signal or a command after determining that the bed layer cavity 16 is full through the current signal, so as to change a flow rate of the dedusting and tar removing material continuously fed into the internal cavity 11 through the dedusting material inlet 14, and enable the high-temperature pyrolysis gas to start to be introduced from the gas inlet 12, therefore, optionally, an air inlet valve is disposed at the gas inlet 12, and a third signal output end of the control unit is electrically connected to the air inlet valve.
The high-temperature pyrolysis gas removes dust and tar materials in the bed layer cavity 16 so as to remove dust and tar carried by the pyrolysis gas by using the dust and tar removing materials. And particularly, the high-temperature pyrolysis gas can be in cross flow contact with the dedusting and tar removing material, so that dust can be deposited under the action of external force, and tar can be adsorbed on the surface of the dedusting and tar removing material. The gas after dust removal and tar removal can leave the inner cavity 11 through the gas outlet 13, and the dust removal and tar removal material adsorbing tar can leave the inner cavity 11 through the dust removal material outlet 15. Meanwhile, fresh dedusting and tar removing materials and the high-temperature pyrolysis gas to be dedusted and tar removed continuously enter the inner cavity 11, so that the particle bed dedusting device continuously processes the high-temperature pyrolysis gas to be dedusted and tar removed.
And wherein, the first horizontal direction can be the flowing direction of the high-temperature pyrolysis gas to be dedusted and tar removed in the body 10; the second horizontal direction may be a horizontal flow direction of the material for dust and tar removal in the body 10, that is, the second horizontal direction may be a flow direction of the material for dust and tar removal in the body 10 in the horizontal direction.
In the illustrated embodiment, referring to fig. 1, the first horizontal direction is the left-right direction in fig. 1, referring to fig. 2, and the second horizontal direction is the left-right direction in fig. 2, and the up-down direction is the up-down direction in fig. 1 and 2. Also, the first horizontal direction may coincide with the second horizontal direction. Alternatively, as shown in fig. 1 and 2, the first horizontal direction may be perpendicular to the second horizontal direction.
Also, in order to obtain the effect of distributing the material more uniformly in the bed layer cavity 16, it is preferable that the auxiliary material screw conveyor 20 extends through the entire internal cavity 11 in the second horizontal direction, and the auxiliary material screw conveyor 20 also extends through substantially the entire internal cavity 11 in a direction perpendicular to the second horizontal direction (it is understood that there is a gap between the screw blade and the internal cavity 11 in order to ensure the normal rotation of the screw blade). In other words, most of the dust-removing and tar-removing materials thrown into the inner cavity 11 from the dust-removing material inlet 14 need to pass through the material distribution of the auxiliary material distribution screw conveying mechanism 20 before falling into the bed layer cavity 16.
Referring to fig. 1 and 2, the particle bed dust removing device further comprises a feeding screw 30 and a discharging screw 40 which are arranged in the internal cavity 11, wherein the feeding screw 30 is positioned above the auxiliary material distribution screw conveying mechanism 20 and is adjacent to the dust removing material outlet 14, and the discharging screw 40 is positioned below the bed layer cavity 16 and is adjacent to the dust removing material outlet 15.
When the decoke tar removal material fills the side of the bed chamber 16 near the decoke material inlet 14, the feed screw 30 may force the accumulated material toward the side of the bed chamber 16 remote from the decoke material inlet 14 to more quickly, evenly, and reliably fill the bed chamber 16 with such material. The discharging screw 30 can forcibly push the material attached with dust and tar out of the dust removal material outlet 15, so that the fresh dust and tar removing material continuously enters the inner cavity 11, and the particle bed dust removing device continuously treats the high-temperature pyrolysis gas to be subjected to dust removal and tar removal.
And, the body 10 may be provided with a flash port 17, and the flash port 17 is matched with a portion of the feeding screw 30 far away from the dust removing material inlet 14.
When the bed chamber 16 is filled with material, the feed screw 30 may push the material located above the bed chamber 16 towards the overflow port 17 and further out of the overflow port 17. That is, if the bed chamber 16 is not filled with material, no material is pushed out of the overflow port 17 by the feed screw 30. Through setting up flash 17, can utilize flash 17 to monitor whether bed layer chamber 16 is full of by the material under the condition that supplementary cloth screw conveyor 20 became invalid, can further avoid causing the problem of treating the high temperature people pyrolysis gas short circuit that removes dust and tar because of bed layer chamber 16 is not full of by the material from this.
Referring to fig. 2, in an example of the present invention, the body 11 further has an upper protruding portion 18 protruding in a horizontal direction, the upper protruding portion 18 is located above the auxiliary material distribution screw 20, a portion of the feeding screw 30 away from the dedusting material inlet 14 is located in the upper protruding portion 18, and the overflow port 17 is disposed at a bottom of the upper protruding portion 18.
The body 10 may further have a lower protrusion 19 protruding in a horizontal direction, a portion of the discharge screw 40 adjacent to the dusting material outlet 15 is located in the lower protrusion 19, and the dusting material outlet 15 is provided at the bottom of the lower protrusion 19.
Referring to fig. 1 and 2, in some embodiments of the present invention, the internal cavity 11 further comprises a gas inlet chamber 110 between the gas inlet 12 and the bed chamber 16, and a gas outlet chamber 111 between the gas outlet 13 and the bed chamber 16, the bed chamber 16 is located between the dedusting material inlet 14 and the dedusting material outlet 15 in the up-down direction, and the bed chamber 16 is located between the gas inlet 12 and the gas outlet 13 in the first horizontal direction. The gas inlet chamber 110 is located between the gas inlet 12 and the bed chamber 16 in the first horizontal direction, and the gas outlet chamber 111 is located between the gas outlet 13 and the bed chamber 16 in the first horizontal direction.
In one specific example of the present invention, the particle bed dust removing device further comprises a control unit, and a first pressure sensor disposed in the gas inlet chamber 110 and a second pressure sensor disposed in the gas outlet chamber 111, wherein a pressure signal input end of the control unit is electrically connected with the first pressure sensor and the second pressure sensor, and a first signal output end is electrically connected with the discharging screw 40. Wherein a first pressure sensor is used to detect the pressure value in the gas inlet chamber 110 and a second pressure sensor is used to detect the pressure value in the gas outlet chamber 111; the control unit can calculate the difference between the pressures in the gas inlet chamber 110 and the gas outlet chamber 111 according to the pressure values transmitted by the two pressure sensors, and control the rotation speed of the discharging screw 40 according to the difference between the pressures. Specifically, when the difference between the pressures is greater than the preset value, the control unit may control to increase the rotation speed of the discharging screw 40, so as to increase the updating speed of the dust and tar removing material. In other words, the rotation speed of the discharging screw 40 can be controlled according to the pressure difference, so that the pressure difference is smaller than or equal to the preset value, and the updating speed of the dedusting and tar removing material in the bed layer cavity 16 meets the treatment capacity of the high-temperature pyrolysis gas, thereby ensuring that an ideal treatment effect is obtained.
Also, in some embodiments, the particulate bed dust collector further comprises an inlet louver 60 and an outlet louver 70 disposed in the internal cavity 11, the bed chamber 16 being located between the inlet louver 60 and the outlet louver 70 in the first horizontal direction. Specifically, the inlet louvers 60 are located between the gas inlet chamber 110 and the bed chamber 16 in the first horizontal direction, and the outlet louvers 70 are located between the gas outlet chamber 111 and the bed chamber 16 in the first horizontal direction.
Referring to fig. 1, a dust and ash removing port 112 communicating with the internal cavity 11 may be provided below the body 10.
It should be noted that the whole particle bed dust removing apparatus according to the above embodiment of the present invention is preferably in a thermal state environment in which tar in the coal gas is not condensed, so that a castable layer may be added to the inside of the whole apparatus, or an external heat preservation treatment may be performed.
The granular bed dust removal device according to the embodiment of the invention can select materials similar to pyrolysis raw materials to remove dust and tar carried by the gas. For example, it may be pyrolysis semicoke or raw coal for pyrolysis, or the like.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A particle bed dust removal device comprises a body (10), wherein the body (10) is provided with an internal cavity (11), the body (10) is provided with a gas inlet (12), a gas outlet (13), a dust removal material inlet (14) and a dust removal material outlet (15), the gas inlet (12), the gas outlet (13), the dust removal material inlet (14) and the dust removal material outlet (15) are communicated with the internal cavity (11), the gas inlet (12) and the gas outlet (13) are arranged at intervals along a first horizontal direction, the dust removal material inlet (14) is positioned above the dust removal material outlet (15), the internal cavity (11) comprises a bed layer cavity (16), and the bed layer cavity (16) is positioned between the dust removal material inlet (14) and the dust removal material outlet (15) along a vertical direction, along a first horizontal direction, the bed cavity (16) is located between the gas inlet (12) and the gas outlet (13), the granular bed dust collector further comprises a discharge screw (40) arranged in the inner cavity (11), the discharge screw (40) is located below the bed cavity (16) and adjacent to the dust collection material outlet (15), and the granular bed dust collector is characterized by further comprising an auxiliary discharge screw conveying mechanism (50), the auxiliary discharge screw conveying mechanism (50) is arranged between the discharge screw (40) and the bed cavity (16), and the auxiliary discharge screw conveying mechanism (50) and the discharge screw (40) extend in the same direction and are located right above the discharge screw (40).
2. A particulate bed dusting apparatus according to claim 1, characterized in that said particulate bed dusting apparatus further comprises a feeding screw (30) arranged in said inner cavity (11), said feeding screw (30) being adjacent to said dusting material outlet (14).
3. A granular bed dust removal device as claimed in claim 2, wherein the body (10) is provided with a flash (17), the flash (17) cooperating with a portion of the feed screw (30) remote from the dust removal material inlet (14).
4. A granular bed dust-catcher as claimed in claim 3, characterized in that the body (11) further has an upper projection (18) projecting in the horizontal direction, the upper projection (18) being located above the bed chamber (16), the part of the feed screw (30) remote from the dust-catcher material inlet (14) being located in the upper projection (18), the overflow opening (17) being provided at the bottom of the upper projection (18).
5. A granular bed dust-catcher as claimed in claim 1, characterized in that the body (10) has a horizontally projecting lower projection (19), the part of the discharge screw (40) adjacent to the dust-catcher material outlet (15) being located in the lower projection (19), the dust-catcher material outlet (15) being provided at the bottom of the lower projection (19).
6. A particle bed dust removal device as claimed in claim 1, wherein the internal cavity (11) further comprises a gas inlet chamber (110) between the gas inlet (12) and the bed chamber (16) and a gas outlet chamber (111) between the gas outlet (13) and the bed chamber (16), the particle bed dust removal device further comprising a control unit, a first pressure sensor disposed in the gas inlet chamber (110) and a second pressure sensor disposed in the gas outlet chamber (111), a pressure signal input of the control unit being electrically connected to the first pressure sensor and the second pressure sensor, and a first signal output being electrically connected to the discharge screw (40).
7. A granular bed dust removing device according to claim 1, wherein the screw blade of said auxiliary discharging screw conveyor (50) is formed with a plurality of hopper portions (51) at equal intervals.
8. A particle bed dust extraction apparatus according to claim 1, wherein the auxiliary discharge screw conveyor structure (50) extends in a second horizontal direction, the auxiliary discharge screw conveyor structure (50) then extending through the entire internal cavity (11) in the second horizontal direction, and wherein the auxiliary discharge screw conveyor structure (50) also extends substantially through the entire internal cavity (11) in a direction perpendicular to the second horizontal direction.
9. A device for removing dust from a particulate bed as claimed in any one of claims 1 to 8, wherein the auxiliary discharge screw conveyor means (50) and the discharge screw (40) each comprise a rotary shaft and screw blades connected to the rotary shaft, and wherein the volume required for filling the spaces between the screw blades of the discharge screw (40) with material in a single pitch is V1, and the volume required for filling the spaces between the screw blades of the auxiliary discharge screw conveyor means (50) with material in a single pitch is V2; the volume of the materials conveyed by the discharging screw (40) in unit time is V1, the volume of the materials conveyed by the auxiliary discharging screw conveying mechanism (50) in unit time is V2, and V1/V2 is less than or equal to V1/V2.
10. The granular bed dust removing device according to claim 9, wherein the pitch of the part of the discharging screw (40) corresponding to the auxiliary discharging screw conveying mechanism (50) is equal to the pitch of the auxiliary discharging screw conveying mechanism (50) and is L, the number of turns of the screw blade on the part of the discharging screw (40) corresponding to the auxiliary discharging screw conveying mechanism (50) around the rotating shaft thereof is equal to the number of turns of the screw blade on the auxiliary discharging screw conveying mechanism (50) around the rotating shaft thereof and is n; and the conveying speed and the conveying direction of the discharging screw (40) and the auxiliary discharging screw conveying mechanism (50) to the dedusting materials are the same, and V1/n is not less than V2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010023413.7A CN113105920A (en) | 2020-01-09 | 2020-01-09 | Particle bed dust removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010023413.7A CN113105920A (en) | 2020-01-09 | 2020-01-09 | Particle bed dust removal device |
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| CN113105920A true CN113105920A (en) | 2021-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010023413.7A Pending CN113105920A (en) | 2020-01-09 | 2020-01-09 | Particle bed dust removal device |
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| CN (1) | CN113105920A (en) |
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