CN108329936B - Cleanable multitube coke powder cooling device - Google Patents
Cleanable multitube coke powder cooling device Download PDFInfo
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- CN108329936B CN108329936B CN201810216574.0A CN201810216574A CN108329936B CN 108329936 B CN108329936 B CN 108329936B CN 201810216574 A CN201810216574 A CN 201810216574A CN 108329936 B CN108329936 B CN 108329936B
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- Prior art keywords
- water supply
- distribution box
- supply distribution
- cooling
- floating
- Prior art date
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- 238000001816 cooling Methods 0.000 title claims abstract description 53
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 66
- 238000009826 distribution Methods 0.000 claims abstract description 52
- 239000000498 cooling water Substances 0.000 claims abstract description 36
- 238000003860 storage Methods 0.000 claims abstract description 23
- 239000010882 bottom ash Substances 0.000 claims abstract description 22
- 238000004140 cleaning Methods 0.000 claims abstract description 15
- 239000002956 ash Substances 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims description 13
- 238000005406 washing Methods 0.000 claims 1
- 238000010791 quenching Methods 0.000 abstract description 7
- 230000000171 quenching effect Effects 0.000 abstract description 7
- 230000007774 longterm Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 10
- 239000013049 sediment Substances 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000571 coke Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a cleanable multi-tube coke powder cooling device, which comprises a shell and a plurality of groups of parallel double-layer heat exchange sleeves arranged in the shell; the device also comprises a fixed cooling backwater box arranged at the top of the shell and a floating water supply distribution box arranged at the lower part of the shell; a cooling return water pipe is arranged on the side surface of the fixed cooling return water header, a double-layer heat exchange sleeve is hung below the fixed cooling return water header, and the bottom end of the double-layer heat exchange sleeve extends into the floating water supply distribution tank; a bottom ash storage bin is arranged below the floating type water supply distribution box; a double labyrinth seal is arranged between the upper end surface and the lower end surface of the floating water supply distribution box and the shell as well as between the upper end surface and the lower end surface of the floating water supply distribution box and the ash storage bin at the bottom; the side face of the floating type water supply distribution box is provided with cleaning holes, and the bottom of the floating type water supply distribution box is provided with a cooling water inlet pipe which is flexibly connected with an external cooling water supply pipe. The invention can improve the cooling efficiency, lighten the weight of equipment, is convenient to clean and overhaul, and is beneficial to prolonging the service life of the equipment, thereby meeting the requirement of long-term stable operation of dry quenching.
Description
Technical Field
The invention relates to the technical field of dry quenching, in particular to a cleanable multi-tube coke powder cooling device.
Background
The coke powder cooling device is an important device for dry quenching, a large amount of coke powder at about 900 ℃ is carried in high-temperature circulating gas after heat exchange with coke, the high-temperature coke powder with the granularity of more than 3mm in the circulating gas is captured by a primary dust remover, and then the high-temperature coke powder is cooled to below 250 ℃ and discharged by the coke powder cooling device.
In the traditional dry quenching production process, high-temperature coke powder trapped by a primary dust remover is cooled by adopting two types of cooling devices: the first is a cooling jacket; the cooling sleeve is a single one and is divided into an inner water jacket layer and an outer water jacket layer, and the middle layer is a flow channel of cooled high-temperature coke powder. The cooling speed of the cooling sleeve is low, and the processing capacity per unit time is not large; in addition, the sealing at the bottom of the water jacket is difficult to treat, water leakage frequently occurs, and the maintenance workload is large. The second cooling device is a three-layer sleeve type multi-pipe cooling device; the cooling units of the multi-pipe cooling device are a plurality of groups of three-layer sleeves, the upper parts of the three-layer sleeves are provided with fixed water inlet distribution boxes and water outlet collection boxes, and the lower parts of the three-layer sleeves are provided with floating type sleeves. The cooling water firstly enters the water inlet distribution box at the upper part, then flows to the U-shaped bend at the lower part along the outer water jacket of the three-layer sleeve, and enters the water jacket at the middle layer after turning to flow upwards continuously, and in the upward flowing process, the cooling water exchanges heat with the high-temperature coke powder in the inner sleeve in a countercurrent way, and finally flows into the water outlet box at the upper part. The three-layer sleeve in the multi-pipe cooling device has large weight, and the U-shaped bent part is easy to block and can not be cleaned, so that the device can be in premature failure due to the blockage of a cooling water channel.
Disclosure of Invention
The invention provides a cleanable multi-tube coke powder cooling device, which adopts a parallel double-layer countercurrent heat exchange sleeve to be matched with a fixed cooling backwater header and a floating water supply distribution box, so that the cooling efficiency can be improved, the equipment weight is reduced, the cleaning and the maintenance are convenient, the service life of the equipment is prolonged, and the requirement of long-term stable operation of dry quenching is met.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
a cleanable multi-tube coke powder cooling device comprises a shell and a plurality of groups of parallel double-layer heat exchange sleeves arranged in the shell; the device also comprises a fixed cooling backwater box arranged at the top of the shell and a floating water supply distribution box arranged at the lower part of the shell; the side surface of the fixed cooling backwater collecting box is provided with a cooling backwater pipe, the double-layer heat exchange sleeve is hung below the fixed cooling backwater collecting box, and the bottom end of the double-layer heat exchange sleeve extends into the floating water supply distribution box; a bottom ash storage bin is arranged below the floating type water supply distribution box; two labyrinth seals are arranged between the upper end and the lower end of the floating water supply distribution box and the shell and between the upper end and the lower end of the floating water supply distribution box and the ash storage bin at the bottom; the side face of the floating type water supply distribution box is provided with cleaning holes, and the bottom of the floating type water supply distribution box is provided with a cooling water inlet pipe which is flexibly connected with an external cooling water supply pipe.
A plurality of guide positioning plates are uniformly arranged between the outer side of the floating water supply distribution box and the shell along the circumferential direction.
The cooling water inlet pipe is flexibly connected with the external cooling water supply pipe through a metal hose; the inlet of the external cooling water supply pipe is arranged on one side of the bottom ash storage bin, the corresponding position of the bottom ash storage bin is provided with a convex structure for protecting the metal hose, and the convex structure is provided with a metal hose overhaul port.
The cooling water inlet pipe is arranged at the center of the bottom of the floating water supply distribution box and is L-shaped, and comprises a vertical pipe section extending downwards and a horizontal pipe section extending to the outer side of the bottom ash storage bin, wherein an umbrella-shaped protective cover is arranged on the vertical pipe section.
And a manhole is arranged on the bottom ash storage bin.
The shell is provided with an outer convex sealing enclosure structure at the position corresponding to the cleaning hole of the floating water supply distribution box, and the end face of the sealing enclosure structure is provided with a sealing cover.
Compared with the prior art, the invention has the beneficial effects that:
1) The defects of two cooling sleeves in the prior art are overcome, and the cooling efficiency is improved and the equipment weight is reduced by connecting a plurality of water-cooled wall type double-layer countercurrent heat exchange sleeves in parallel and adopting a structure matched with a fixed cooling backwater collecting box and a floating water supply distribution box;
2) The equipment is easy to maintain, and the integral use of the cooling device is not affected even if a single cooling sleeve fails;
3) Solves the problem of cleaning the sediment in the water supply distribution box, the service life of the whole equipment is multiplied, and the requirement of long-term stable operation of the dry quenching is met.
Drawings
Fig. 1 is a schematic structural diagram of a washable multi-tube coke powder cooling device according to the present invention.
In the figure: 1. casing 2, double-layer heat exchange sleeve 3, external cooling water supply pipe 4, metal hose 5, umbrella-shaped protective cover 6, floating water supply distribution box 7, fixed water return box 8, cooling water return pipe 9, double-path labyrinth seal 10, cleaning hole 11, bottom ash storage bin 12, cleaning hole sealing cover 13, guide positioning plate 14, metal hose overhaul hole 15, manhole 16, cooling water inlet pipe
Detailed Description
The following is a further description of embodiments of the invention, taken in conjunction with the accompanying drawings:
referring to fig. 1, the washable multi-tube coke powder cooling device provided by the invention comprises a shell 1 and a plurality of groups of parallel double-layer heat exchange sleeves 2 arranged in the shell 1; the device also comprises a fixed cooling backwater collecting box 7 arranged at the top of the shell 1 and a floating water supply distribution box 6 arranged at the lower part of the shell 1; the side surface of the fixed cooling backwater box 7 is provided with a cooling backwater pipe 8, the double-layer heat exchange sleeve 2 is hung below the fixed cooling backwater box 7, and the bottom end of the double-layer heat exchange sleeve extends into the floating water supply distribution box 6; a bottom ash storage bin 11 is arranged below the floating type water supply distribution box 6; two labyrinth seals 9 are arranged between the upper and lower ends of the floating water supply distribution box 6 and the shell 1 and the bottom ash storage bin 11; the side surface of the floating water supply distribution box 6 is provided with a cleaning hole 10, and the bottom is provided with a cooling water inlet pipe 16 which is flexibly connected with the external cooling water supply pipe 3.
A plurality of guiding and positioning plates 13 are uniformly arranged between the outer side of the floating water supply distribution box 6 and the shell 1 along the circumferential direction.
The cooling water inlet pipe 16 is flexibly connected with the external cooling water supply pipe 3 through a metal hose 4; the inlet of the external cooling water supply pipe 3 is arranged on one side of the bottom ash storage bin 11, an outer convex structure is arranged at the corresponding position of the bottom ash storage bin 11 to play a role in protecting the metal hose 4, and a metal hose access hole 14 is arranged on the outer convex structure.
The cooling water inlet pipe 16 is arranged at the center of the bottom of the floating water supply distribution box 6 and is L-shaped, and comprises a vertical pipe section extending downwards and a horizontal pipe section extending to the outer side of the bottom ash storage bin 11, wherein an umbrella-shaped protective cover 5 is arranged on the vertical pipe section.
And a manhole 15 is arranged on the bottom ash storage bin 11.
The shell 1 is provided with an outer convex sealing enclosure structure at a position corresponding to the cleaning hole 10 of the floating water supply distribution box 6, and the end surface of the sealing enclosure structure is provided with a sealing cover 12.
In the cleanable multi-tube coke powder cooling device, a double-layer heat exchange sleeve 2 is vertically arranged, a fixed backwater collecting box 7 is arranged above the double-layer heat exchange sleeve 2, a floating water supply distribution box 6 is arranged below the double-layer heat exchange sleeve 2, high-temperature coke powder enters and exits from the upper part in the double-layer heat exchange sleeve 2, and cooling water enters and exits from the lower part between the double-layer heat exchange sleeves 2 and exchanges heat with the high-temperature coke powder indirectly in a countercurrent mode.
The floating water supply distribution box 6 is floating and can adapt to thermal expansion caused by temperature change. After the floating water supply distribution box 6 is arranged, the lower part of the double-layer heat exchange sleeve 2 is not restricted, so that the heat expansion of the double-layer heat exchange sleeve 2 can be absorbed, a certain amount of sediments deposited in cooling water can be contained, and the blockage of a water channel of the double-layer heat exchange sleeve 2 is avoided.
The upper end face and the lower end face of the floating water supply distribution box 6 are respectively provided with a double labyrinth seal 9, so that a small amount of volatile gas in the cooled coke powder is prevented from entering the space between the heat exchange tube bundles, and nitrogen purging is avoided.
A plurality of guide positioning plates 13 are uniformly arranged on the circumference of the floating type water supply distribution box 6 to prevent the floating type water supply distribution box 6 and the double-layer heat exchange sleeve 2 from deflecting.
The floating water supply distribution box 6 is provided with a cleaning hole 10, and sediment in the floating water supply distribution box 6 can be cleaned without disassembling the multi-pipe coke powder cooling device. In the dry quenching Jiao Nianxiu, the connecting flange with the external cooling water supply pipe 3 is disassembled, the sealing cover 12 of the cleaning hole and the sealing blind plate at the cleaning hole 10 are disassembled, the high-pressure water gun is used for cleaning sediment deposited in the floating water supply distribution box 6 through the cleaning hole 10, and the cleaned sediment is discharged from the cooling water inlet pipe 16 along with sewage. The cover plate on the metal hose access opening 14 is detached, and the metal hose 4 can be inspected and replaced without accessing the inside of the bottom ash bin 11.
An umbrella-shaped protective cover 5 is arranged on the straight pipe section of the cooling water inlet pipe 16 to prevent the dropped coke powder from wearing the cooling water inlet pipe 16 and impacting the discharge hole of the bottom ash storage bin 11.
The manhole 15 is arranged on the bottom ash storage bin 11, so that an maintainer can conveniently enter the equipment to check the working condition of the floating water supply distribution box 6.
When the washable multi-tube coke powder cooling device works, high-temperature coke powder at 900 ℃ to be cooled enters the inner-layer sleeve of the double-layer heat exchange sleeve 2 from top to bottom, and cooling water enters between the inner-layer sleeve and the outer-layer sleeve of the double-layer heat exchange sleeve 2 from bottom to top to exchange heat with the high-temperature coke powder indirectly in a countercurrent mode. After the coke powder is cooled to below about 250 ℃, the coke powder enters the bottom ash storage bin 11 and is discharged periodically. The cooling water enters the floating water supply distribution box 6 from the cooling water inlet pipe 16, flows into the fixed water return header 7 after passing through the double-layer heat exchange sleeve pipes 2, and flows out through the cooling water return pipe 8.
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 (6)
1. A cleanable multi-tube coke powder cooling device comprises a shell and a plurality of groups of parallel double-layer heat exchange sleeves arranged in the shell; the device is characterized by further comprising a fixed cooling backwater collecting box arranged at the top of the shell and a floating water supply distribution box arranged at the lower part of the shell; the side surface of the fixed cooling backwater collecting box is provided with a cooling backwater pipe, the double-layer heat exchange sleeve is hung below the fixed cooling backwater collecting box, and the bottom end of the double-layer heat exchange sleeve extends into the floating water supply distribution box; a bottom ash storage bin is arranged below the floating type water supply distribution box; two labyrinth seals are arranged between the upper end face and the lower end face of the floating water supply distribution box and the shell and between the upper end face and the lower end face of the floating water supply distribution box and the ash storage bin at the bottom; the side face of the floating type water supply distribution box is provided with cleaning holes, and the bottom of the floating type water supply distribution box is provided with a cooling water inlet pipe which is flexibly connected with an external cooling water supply pipe.
2. The washable multi-tube coke powder cooling device of claim 1, wherein a plurality of guiding and positioning plates are uniformly arranged between the outer side of the floating water supply distribution box and the shell along the circumferential direction.
3. The washable multitube coke powder cooling apparatus of claim 1, wherein the cooling water inlet tube is flexibly connected with an external cooling water feed tube through a metal hose; the inlet of the external cooling water supply pipe is arranged on one side of the bottom ash storage bin, the corresponding position of the bottom ash storage bin is provided with a convex structure for protecting the metal hose, and the convex structure is provided with a metal hose overhaul port.
4. The washable multi-tube coke powder cooling device of claim 1, wherein the cooling water inlet tube is arranged at the center of the bottom of the floating water supply distribution box, is L-shaped, and comprises a vertical tube section extending downwards and a horizontal tube section extending towards the outer side of the bottom ash storage bin, wherein an umbrella-shaped protection cover is arranged on the vertical tube section.
5. The washable multi-tube coke powder cooling apparatus of claim 1, wherein the bottom ash bin is provided with a manhole.
6. The washable multi-tube coke powder cooling device of claim 1, wherein the housing has a male seal enclosure at a location corresponding to the washing hole of the floating feed water distribution box, and a seal cover is provided on an end surface of the seal enclosure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810216574.0A CN108329936B (en) | 2018-03-16 | 2018-03-16 | Cleanable multitube coke powder cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810216574.0A CN108329936B (en) | 2018-03-16 | 2018-03-16 | Cleanable multitube coke powder cooling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108329936A CN108329936A (en) | 2018-07-27 |
| CN108329936B true CN108329936B (en) | 2024-02-13 |
Family
ID=62931107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810216574.0A Active CN108329936B (en) | 2018-03-16 | 2018-03-16 | Cleanable multitube coke powder cooling device |
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| Country | Link |
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| CN (1) | CN108329936B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108917423B (en) * | 2018-08-01 | 2024-04-16 | 四川科新机电股份有限公司 | Cooler for cooling solid particles |
| CN110408413B (en) * | 2019-07-17 | 2020-11-20 | 赵祖良 | Floating honeycomb type semi-coke oven capable of uniformly and efficiently transferring heat |
| CN110655931A (en) * | 2019-09-30 | 2020-01-07 | 广东韶钢松山股份有限公司 | High-temperature coke powder cooling device |
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| CN2856907Y (en) * | 2005-11-22 | 2007-01-10 | 淄博创尔沃中央空调有限公司 | External pipe condensing iso-flow rate steam-liquid heat exchanger |
| CN101709221A (en) * | 2009-11-16 | 2010-05-19 | 中冶焦耐(大连)工程技术有限公司 | Novel coke powder cooling device |
| CN203388700U (en) * | 2012-01-10 | 2014-01-15 | 布瑞威利私人有限公司 | Water cooler |
| CN204115531U (en) * | 2014-09-23 | 2015-01-21 | 赛鼎工程有限公司 | A kind of shell-and-tube gas-gas heat exchanger |
| CN204111663U (en) * | 2014-09-17 | 2015-01-21 | 西安华江环保科技股份有限公司 | A kind of big area fly-ash separator coke powder cooling apparatus |
| CN105586061A (en) * | 2016-02-25 | 2016-05-18 | 北京中日联节能环保工程技术有限公司 | High-temperature coke powder cooling unit |
| CN208121026U (en) * | 2018-03-16 | 2018-11-20 | 中冶焦耐(大连)工程技术有限公司 | A kind of cleanable multitube coke powder cooling device |
-
2018
- 2018-03-16 CN CN201810216574.0A patent/CN108329936B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2856907Y (en) * | 2005-11-22 | 2007-01-10 | 淄博创尔沃中央空调有限公司 | External pipe condensing iso-flow rate steam-liquid heat exchanger |
| CN101709221A (en) * | 2009-11-16 | 2010-05-19 | 中冶焦耐(大连)工程技术有限公司 | Novel coke powder cooling device |
| CN203388700U (en) * | 2012-01-10 | 2014-01-15 | 布瑞威利私人有限公司 | Water cooler |
| CN204111663U (en) * | 2014-09-17 | 2015-01-21 | 西安华江环保科技股份有限公司 | A kind of big area fly-ash separator coke powder cooling apparatus |
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| CN108329936A (en) | 2018-07-27 |
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