CN116726609A - Dry quenching primary dust collector - Google Patents
Dry quenching primary dust collector Download PDFInfo
- Publication number
- CN116726609A CN116726609A CN202310726423.0A CN202310726423A CN116726609A CN 116726609 A CN116726609 A CN 116726609A CN 202310726423 A CN202310726423 A CN 202310726423A CN 116726609 A CN116726609 A CN 116726609A
- Authority
- CN
- China
- Prior art keywords
- dust
- retaining wall
- straight section
- dust removing
- dry quenching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000428 dust Substances 0.000 title claims abstract description 113
- 238000010791 quenching Methods 0.000 title claims abstract description 28
- 230000000171 quenching effect Effects 0.000 title claims abstract description 28
- 239000000571 coke Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 21
- 230000000694 effects Effects 0.000 abstract description 8
- 238000009825 accumulation Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 16
- 230000009471 action Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
-
- 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
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B39/00—Cooling or quenching coke
- C10B39/02—Dry cooling outside the oven
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Coke Industry (AREA)
Abstract
The invention relates to a dry quenching primary dust removing device which comprises a dust removing channel, a dust collecting net, a retaining wall, a large ash bucket and an ash distributing bucket; the dust removing channel consists of a vault, a side wall, a dust removing side straight section and a boiler side straight section; the dust-collecting net is hung on the left inner wall of the vault; the retaining wall is of an splayed structure and is arranged at the left side end of the dust removing side straight section, and the splayed small opening end of the retaining wall faces to the left side; the eight-shaped large mouth ends of the near retaining wall of the straight section of the dust removing side are respectively provided with an ash separating hopper. The dust-catching net or the splayed retaining wall is arranged on the upper side and the lower side of the outlet end of the dry quenching, so that the flying speed of dust can be reduced, the flying path of the dust can be changed, and the dust removal pertinence and the dust removal effect can be improved; the dust hoppers are arranged at the dust falling places in a targeted manner, so that the plurality of dust hoppers collect the coke powder in time, and the problems that the flow area is reduced, the gas flow speed is increased, the coke powder is wrapped and fly up for the second time and the like caused by coke powder accumulation are avoided.
Description
Technical Field
The invention relates to the technical field of dust removal equipment, in particular to a dry quenching primary dust removal device.
Background
At present, a dry quenching primary dust remover is mainly process equipment for removing dust from dry quenching circulating gas by utilizing a gravity dust removal principle, and mainly comprises structural forms such as a large retaining wall, a retaining wall-free wall, a staggered difference type structure and the like according to structural forms. The dust remover with the large retaining wall structure has the advantages of high deformation damage easily due to the large air receiving surface and large expansion amount of the retaining wall, higher maintenance cost, lower dust removing efficiency of the dust remover without the retaining wall and error type structure, poor dust removing effect and larger influence on subsequent equipment. In addition, the single ash bucket is usually arranged, the coke powder is not collected timely, the flow area is reduced due to the fact that the coke powder is accumulated, the gas flow speed is increased, and the problems that the coke powder is wrapped and clamped and flies up for the second time are solved.
Through computer simulation, most coke powder mainly flies out along the upper side and the lower side of a coke dry quenching outlet in the coke dry quenching production operation process, and most coke powder can fall on the straight section of the primary dust remover in advance, so that accumulation is formed, the circulating gas flow sectional area of the dust remover is reduced, and the dust removal effect is reduced. If the flying speed of the coke powder can be effectively shielded or reduced through collision or the flying path of the coke powder is changed, accumulated coke powder can be timely removed, the dust removal efficiency of the dry quenching Jiao Chongli dust remover can be greatly improved, and the abrasion of large-particle coke powder to a subsequent boiler pipeline is avoided.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention solves the technical problem of providing a dry quenching primary dust removing device, wherein dust-catching nets or splayed retaining walls are arranged on the upper side and the lower side of a dry quenching outlet end, so that the flying speed of dust can be reduced, the flying path of the dust can be changed, and the dust removing pertinence and the dust removing effect can be improved; the dust hoppers are arranged at the dust falling places in a targeted manner, so that the plurality of dust hoppers collect the coke powder in time, and the problems that the flow area is reduced, the gas flow speed is increased, the coke powder is wrapped and fly up for the second time and the like caused by coke powder accumulation are avoided.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
a dry quenching primary dust removing device comprises a dust removing channel, a dust collecting net, a retaining wall, a large ash bucket and an ash distributing bucket; the dust removing channel consists of a vault, side walls, a dust removing side straight section and a boiler side straight section, wherein the dust removing side straight section and the boiler side straight section are respectively arranged at two sides of the large ash bucket; the dust-collecting net is hung on the left inner wall of the vault; the retaining wall is of an splayed structure and is arranged at the left side end of the dust removing side straight section, and the splayed small opening end of the retaining wall faces to the left side; the eight-shaped large mouth ends of the near retaining wall of the straight section of the dust removing side are respectively provided with an ash separating hopper.
Furthermore, the dust-catching net can be a net-shaped structure, or a net-like structure formed by uniformly distributing chains with a plurality of strips of fins along the section of the dust-catching channel, wherein one end of the chains is fixed on a vault, and the other end of the chains naturally sags.
Further, the length of the sagging of the dust-catching net from the vault is 300mm to three fourths of the net elevation of the vault.
Further, the height of the retaining wall is 100mm to the top of the vault.
Furthermore, a plurality of hemispherical pits which are uniformly distributed are arranged on the outer side face of the splayed retaining wall.
Further, the big ash bucket and the ash distributing bucket are of conical funnel-shaped structures, and the included angle between the left side face and the horizontal is smaller than the included angle between the right side face and the horizontal.
Further, the arch-shaped structure can be arranged in a flat mode or in a staggered mode.
Compared with the prior art, the invention has the beneficial effects that:
1) The invention does not adopt the existing structure of suspending the vertical retaining wall above the ash bucket, but adopts a front dust-catching net structure, and not only can realize the effect of retaining wall through the dust-catching net, but also can reduce the total resistance of the dust remover and improve the dust removing effect;
2) According to the invention, an effective blocking mode is arranged according to the flying track of the dry quenching dust, namely, dust-catching nets or splayed retaining walls are arranged at two sides of the dry quenching outlet end, so that the flying speed of the dust is reduced, the flying path of the dust is changed, and the dust falls into a dust hopper, thereby achieving the purpose of dust removal;
3) According to the invention, the ash hoppers are arranged at the places where dust is easy to fall, so that the plurality of ash hoppers collect the coke powder more timely, and the problems that the flow area is reduced, the gas flow speed is increased, the coke powder is wrapped and trapped for secondary fly-up and the like caused by coke powder accumulation are avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a schematic front view of the structural principle of a primary dust collector for dry quenching of the present invention;
FIG. 2 is a schematic left side view of the structural principle of the primary dust collector for dry quenching of the present invention;
fig. 3 is a schematic view of the structural principle of the section B-B in fig. 1.
Reference numerals illustrate:
in the figure: 1-vault, 2-side wall, 3-dust removal side straight section, 4-boiler side straight section, 5-big ash bucket, 6-dust-catching net, 7-retaining wall and 8-ash distributing bucket.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, it should be understood that the terms "left", "right", "horizontal", "vertical", "upper", "lower", "front", "rear", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The following is a further description of embodiments of the invention, taken in conjunction with the accompanying drawings:
1-3, the invention relates to a dry quenching primary dust removing device, which comprises a dust removing channel, a dust collecting net 6, a retaining wall 7, a large ash bucket 5 and an ash separating bucket 8; the dust removing channel consists of a vault 1, side walls 2, a dust removing side straight section 3 and a boiler side straight section 4, wherein the dust removing side straight section 3 and the boiler side straight section 4 are respectively arranged at two sides of a large ash bucket 5, the two side walls 2 are symmetrically and vertically arranged at two sides of the dust removing side straight section 3 and the boiler side straight section 4, and the vault 1 is located on the two side walls 2; the dust-catching net 6 is hung on the inner wall of the left side of the vault 1; the retaining wall 7 is of an eight-shaped structure and is arranged at the left side end of the dust removing side straight section 3, and the small opening end of the eight-shaped retaining wall 7 faces to the left side, namely the outlet side of the dry quenching furnace; the dust removing side straight section 3 is provided with the dust separating hoppers 8 at the large opening ends of the adjacent retaining walls 7 respectively, the dust hoppers are arranged at the positions where dust falls, the dust hoppers collect the coke powder more timely, and the problems that the flow area is reduced, the gas flow speed is increased, the coke powder is wrapped and fly up for the second time and the like caused by coke powder accumulation are avoided.
Further, the dust catching net 6 may be a net structure, or a net-like structure formed by uniformly distributing a plurality of strips of fins along the cross section of the dust removing channel, wherein one end of the chain is fixed on the inner wall of the vault 1, and the other end of the chain naturally sags, and the dust catching net 6 can not only realize the effect of the retaining wall of the original dust remover, but also reduce the total resistance of the dust remover and improve the dust removing effect.
Further, the length of the dust-collecting net 6 which is hung from the vault 1 is 300mm to three fourths of the net elevation of the vault 1.
Further, the height of the retaining wall 7 is 100mm to the top of the vault 1.
Furthermore, the outer side surface of the splayed retaining wall 7 is provided with a plurality of hemispherical pits which are uniformly distributed, so that the flying speed of dust can be effectively reduced, and the flying path of the dust can be changed.
Further, the big ash bucket 5 and the ash separating bucket 8 are both in conical funnel structures, and the included angle between the left side face (shown in fig. 1) (i.e. the flying direction of the dust) and the horizontal is smaller than the included angle between the right side and the horizontal, so that dust collection is facilitated.
Further, the arch crown 1 has an arc structure, and may be arranged in a flat manner or in a staggered manner.
[ example ]
The primary dust removing device for dry quenching comprises a dust removing channel, a dust collecting net 6, a retaining wall 7, a large ash bucket 5 and an ash separating bucket 8; the dust removing channel consists of a vault 1, side walls 2, a dust removing side straight section 3 and a boiler side straight section 4, wherein the dust removing side straight section 3 and the boiler side straight section 4 are respectively arranged at two sides of a large ash bucket 5, the two side walls 2 are symmetrically and vertically arranged at two sides of the dust removing side straight section 3 and the boiler side straight section 4, and the vault 1 is located on the two side walls 2; the dust-catching net 6 is hung on the inner wall of the left side of the vault 1; the retaining wall 7 is of an eight-shaped structure and is arranged at the left side end of the dust removing side straight section 3, and the small opening end of the eight-shaped retaining wall 7 faces to the left side, namely the outlet side of the dry quenching furnace; the eight-shaped large opening ends of the near retaining wall 7 of the dust removing side straight section 3 are respectively provided with an ash separating hopper 8.
The height of the retaining wall 7 is 120mm, the dust-catching net 6 is a net-like structure formed by uniformly distributing chains with a plurality of strips of fins along the section of the dust-collecting channel, one end of the chains is fixed on the inner wall of the vault 1, the other end of the chains naturally sags, and after the dust-catching net is installed, the distance between the lower ends of the chains and the upper ends of the retaining wall 7 is 100mm.
The left end of the dust remover is connected with the outlet of the dry quenching furnace through a high-temperature expansion joint, and the right end of the dust remover is connected with the waste heat boiler through a high-temperature expansion joint.
Circulating gas from the outlet of the dry quenching furnace enters from the left end of the dust remover and flows to the right end, the dust-catching net 6 hung on the vault 1 plays a role in blocking and guiding the upper circulating gas, dust in the circulating gas is decelerated after striking the dust-catching net 6 and falls down under the action of inertia to change the direction downwards, the circulating gas at the middle lower part is decelerated or changed in direction, and finally the circulating gas is settled to the straight section 3 at the dust removing side under the action of gravity and is discharged through the big ash bucket 5 or the ash separating bucket 8; the eight-shaped retaining wall 7 plays a role in blocking and guiding lower circulating gas, dust in the circulating gas is decelerated after striking a hemispherical pit on the retaining wall 7 and is sunk to change direction under the action of inertia, or is downwards or upwards or towards two sides of the two side walls 2, the circulating gas near the middle or lower two side walls 2 is decelerated or changed direction, finally the circulating gas is sunk to a dust removing side straight section 3 under the action of gravity and is discharged through a big ash bucket 5 or an ash separating bucket 8, and the circulating gas after primary dust removal flows out through the right end of the dust remover and enters a subsequent waste heat boiler.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (5)
1. The dry quenching primary dust removing device is characterized by comprising a dust removing channel, a dust collecting net, a retaining wall, a large ash bucket and an ash distributing bucket; the dust removing channel consists of a vault, side walls, a dust removing side straight section and a boiler side straight section, wherein the dust removing side straight section and the boiler side straight section are respectively arranged at two sides of the large ash bucket; the dust-collecting net is hung on the left inner wall of the vault; the retaining wall is of an splayed structure and is arranged at the left side end of the dust removing side straight section, and the splayed small opening end of the retaining wall faces to the left side; the eight-shaped large mouth ends of the near retaining wall of the straight section of the dust removing side are respectively provided with an ash separating hopper.
2. The device for primary dust removal of coke dry quenching according to claim 1, wherein the dust-catching net can be a net structure or a net-like structure formed by uniformly distributing chains with a plurality of fins along the section of the dust removal channel in a straight line, wherein one end of the chains is fixed on a vault, and the other end of the chains naturally sags.
3. The primary dust collector of dry quenching coke as set forth in claim 1 wherein said dust screen depends from the dome for a length of 300mm to three-quarters of the net elevation of the dome.
4. The primary dust removal device for dry quenching as claimed in claim 1, wherein the retaining wall has a height of 100mm to the top of the vault.
5. The primary dust removal device for dry quenching as set forth in claim 1, wherein a plurality of hemispherical pits are uniformly distributed on the outer side surface of the eight-shaped retaining wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310726423.0A CN116726609A (en) | 2023-06-19 | 2023-06-19 | Dry quenching primary dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310726423.0A CN116726609A (en) | 2023-06-19 | 2023-06-19 | Dry quenching primary dust collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116726609A true CN116726609A (en) | 2023-09-12 |
Family
ID=87914679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310726423.0A Pending CN116726609A (en) | 2023-06-19 | 2023-06-19 | Dry quenching primary dust collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116726609A (en) |
-
2023
- 2023-06-19 CN CN202310726423.0A patent/CN116726609A/en active Pending
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