CN111637779A - Coke oven raw gas sensible heat recovery device - Google Patents
Coke oven raw gas sensible heat recovery device Download PDFInfo
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- CN111637779A CN111637779A CN202010520432.0A CN202010520432A CN111637779A CN 111637779 A CN111637779 A CN 111637779A CN 202010520432 A CN202010520432 A CN 202010520432A CN 111637779 A CN111637779 A CN 111637779A
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- 239000000571 coke Substances 0.000 title claims abstract description 76
- 238000011084 recovery Methods 0.000 title claims abstract description 52
- 239000007787 solid Substances 0.000 claims abstract description 55
- 238000010521 absorption reaction Methods 0.000 claims abstract description 44
- 238000009423 ventilation Methods 0.000 claims abstract description 7
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 230000001376 precipitating effect Effects 0.000 claims description 7
- 239000006004 Quartz sand Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000002923 metal particle Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 131
- 238000000034 method Methods 0.000 description 8
- 238000001556 precipitation Methods 0.000 description 8
- 238000000746 purification Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 239000003245 coal Substances 0.000 description 4
- 238000004939 coking Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Images
Classifications
-
- 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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
-
- 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
- C10B27/00—Arrangements for withdrawal of the distillation gases
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Industrial Gases (AREA)
Abstract
The invention discloses a coke oven crude gas sensible heat recovery device, which comprises a recovery tower, a ventilation device and a feeding device, wherein the ventilation device is arranged on the recovery tower; a heat exchange cavity is arranged in the recovery tower, and an air inlet, an air outlet and a feeding port are arranged on the inner side wall of the heat exchange cavity in a penetrating manner; the ventilation device comprises an air inlet pipeline mounted to the air inlet and is used for conveying high-temperature raw coke oven gas into the heat exchange cavity; the feeding device comprises a feeding pipeline which is arranged at the feeding port and used for conveying heat absorption solid media to the heat exchange cavity, and the heat absorption solid media and the high-temperature raw gas are mixed to absorb heat so as to cool the high-temperature raw gas into low-temperature raw gas and discharge the low-temperature raw gas through the gas outlet. The heat absorption solid medium and the high-temperature raw gas are mixed in the heat exchange cavity, and the heat absorption solid medium absorbs heat, so that the high-temperature raw gas is cooled to be low-temperature raw gas, and the sensible heat recovery efficiency is greatly improved.
Description
Technical Field
The invention relates to the field of raw gas treatment equipment, in particular to a coke oven raw gas sensible heat recovery device.
Background
The cooperation coal is when carbomorphism room high temperature coking, the main product of generation is the coke, generate the raw coke oven gas simultaneously, the sensible heat of red-hot coke adopts the dry quenching technique to retrieve, the flue gas heat is used for going into the stove coal humidifying, furnace body surface heat dissipation need adopt thermal-insulated measure in order to reduce the heat dissipation capacity, for retrieving the sensible heat that the raw coke oven gas brought out, generally adopt tedge heat transfer technique to retrieve, at the recovery sensible heat in-process, because when the temperature is less than the tar dew point, tar is at next door heat exchanger surface condensation, bring two big problems: firstly, dew point corrosion can be generated by condensing tar; secondly, under the action of high temperature, the condensed tar can be converted into carbon and even graphite is separated out, so that the heat exchanger cannot stably operate for a long time, therefore, when the existing riser pipe sensible heat recovery technology recovers sensible heat, the surface temperature of the heat exchanger must be kept higher than the dew point temperature of the tar, the temperature of the gas after sensible heat recovery is still very high, the sensible heat recovered by the riser pipe sensible heat recovery technology only accounts for a part of the sensible heat carried by the raw gas, and therefore, the riser pipe raw gas sensible heat recovery technology still has a great improvement space.
Disclosure of Invention
The invention mainly aims to provide a raw gas sensible heat recovery device of a coke oven, and aims to solve the problem of insufficient raw gas sensible heat recovery.
In order to achieve the purpose, the invention provides a raw coke oven gas sensible heat recovery device, which comprises:
the recovery tower is internally provided with a heat exchange cavity, and the inner side wall of the heat exchange cavity is provided with an air inlet, an air outlet and a feeding port in a penetrating manner;
the ventilation device comprises an air inlet pipeline mounted to the air inlet and is used for conveying high-temperature raw coke oven gas into the heat exchange cavity; and the number of the first and second groups,
and the feeding device comprises a feeding pipeline which is arranged to the feeding port and is used for conveying a heat absorption solid medium into the heat exchange cavity, and the heat absorption solid medium and the high-temperature raw gas are mixed to absorb heat so as to reduce the temperature of the high-temperature raw gas into low-temperature raw gas and discharge the low-temperature raw gas through the gas outlet.
Optionally, the heat exchange cavity comprises a first cavity section with a larger cross section and a second cavity section with a smaller cross section, which are sequentially arranged from top to bottom;
wherein a guide ramp is formed between the first cavity section and the second cavity section.
Optionally, the feeding pipeline includes a pressure pipeline and a material pipeline, the pressure pipeline is communicated with the heat exchange cavity, the material pipeline is communicated with the inside of the pressure pipeline, the heat absorption solid medium is transported in the material pipeline, pressure gas is communicated in the pressure pipeline, and the pressure gas is used for driving the heat absorption solid medium to enter the heat exchange cavity to be mixed with the high-temperature raw coke oven gas.
Optionally, the pressure gas is purified gas.
Optionally, the heat exchange cavity has an air inlet end and an air outlet end which are oppositely arranged from bottom to top, the air inlet is arranged on the inner side wall of the air inlet end, and the air outlet is arranged on the inner side wall of the air outlet end;
the feeding port is arranged between the air inlet end and the air outlet end.
Optionally, the sensible heat recovery device for the raw coke oven gas further comprises a flow dividing device, and the flow dividing device is installed in the heat exchange cavity and is located between the feeding port and the air inlet end; the flow dividing device comprises a flow dividing plate extending horizontally, the flow dividing plate is rotatably arranged in the heat exchange cavity along an up-down axis, and a plurality of uniformly distributed flow dividing holes penetrate through the upper end surface of the flow dividing plate; and/or the presence of a gas in the gas,
the sensible heat recovery device for the raw coke oven gas further comprises a gas distribution device, and the gas distribution device is installed in the heat exchange cavity and is positioned between the feeding port and the gas inlet end;
the gas distribution device comprises a gas guide plate extending along the horizontal direction, a gas collection cavity is formed in the gas guide plate, a plurality of gas holes are formed in the upper end face of the gas guide plate and communicated with the gas collection cavity, and a gas collection opening is formed in the lower wall face of the gas collection cavity and used for introducing high-temperature raw coke oven gas fed from the gas inlet.
Optionally, the sensible heat recovery device of the raw coke oven gas further comprises a gas distributor installed in the heat exchange cavity, and an input port of the gas distributor is communicated with the gas inlet pipeline.
Optionally, the sensible heat recovery device of the raw coke oven gas further comprises a plurality of nozzles, air inlets of the plurality of nozzles are communicated to the output port of the gas distributor, and nozzle angles of the plurality of nozzles are different.
Optionally, an air outlet pipeline is arranged at the air outlet, a purification precipitation body is arranged on the air outlet pipeline, a purification precipitation cavity is formed in the purification precipitation body, and a cyclone separator is arranged in the purification precipitation cavity and used for evolving and precipitating the low-temperature raw coke oven gas discharged from the air outlet; and/or the presence of a gas in the gas,
a spiral conveying blade is arranged in the feeding pipeline; and/or the presence of a gas in the gas,
the heat-absorbing solid medium is one or more of coke, quartz sand, metal particles and blue carbon.
Optionally, the feeding device further comprises a sealing structure, and the sealing structure comprises:
the main feeding pipeline is communicated to the feeding pipeline and is used for transporting the heat absorption solid medium, a first circulating port penetrates through the lower wall surface of the main feeding pipeline, a second circulating port penetrates through the upper wall surface of the main feeding pipeline, and a filter screen is mounted on the first circulating port; and the number of the first and second groups,
a sealed circulation pipe including a first circulation pipe mounted to the first circulation port, and a second circulation pipe mounted to the second circulation port, and the first circulation pipe being communicated to the second circulation pipe.
According to the technical scheme, high-temperature raw coke oven gas is continuously conveyed into the heat exchange cavity through the air inlet pipeline, heat absorption solid medium is conveyed into the heat exchange cavity through the feeding pipeline, the heat absorption solid medium and the high-temperature raw coke oven gas are mixed in the heat exchange cavity, the heat absorption solid medium absorbs heat, so that the high-temperature raw coke oven gas is cooled to be low-temperature raw coke oven gas, the coke oven raw coke oven gas sensible heat recovery device does not need to consider the problems of waste water generation and coking and carbon deposition caused by too low raw coke oven gas temperature, the heat absorption solid medium can absorb more heat, and the sensible heat recovery efficiency is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic front sectional view of an embodiment of a sensible heat recovery device of raw coke oven gas provided by the invention;
fig. 2 is a schematic front sectional structural view of another embodiment of the sensible heat recovery device of raw gas of a coke oven provided by the invention.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indication is involved in the embodiment of the present invention, the directional indication is only used for explaining the relative positional relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The cooperation coal is when carbomorphism room high temperature coking, the main product of generation is the coke, generate the raw coke oven gas simultaneously, the sensible heat of red-hot coke adopts the dry quenching technique to retrieve, the flue gas heat is used for going into the stove coal humidifying, furnace body surface heat dissipation need adopt thermal-insulated measure in order to reduce the heat dissipation capacity, for retrieving the sensible heat that the raw coke oven gas brought out, generally adopt tedge heat transfer technique to retrieve, at the recovery sensible heat in-process, because when the temperature is less than the tar dew point, tar is at next door heat exchanger surface condensation, bring two big problems: firstly, dew point corrosion can be generated by condensing tar; secondly, under the action of high temperature, the condensed tar can be converted into carbon and even graphite is separated out, so that the heat exchanger cannot stably operate for a long time, therefore, when the existing riser pipe sensible heat recovery technology recovers sensible heat, the surface temperature of the heat exchanger must be kept higher than the dew point temperature of the tar, the temperature of the gas after sensible heat recovery is still very high, the sensible heat recovered by the riser pipe sensible heat recovery technology only accounts for a part of the sensible heat carried by the raw gas, and therefore, the riser pipe raw gas sensible heat recovery technology still has a great improvement space.
The invention provides a raw coke oven gas sensible heat recovery device, wherein two embodiments are provided in figures 1-2.
Referring to fig. 1, the present invention provides a raw coke oven gas sensible heat recovery device 100, which includes a recovery tower 1, a ventilation device and a feeding device; a heat exchange cavity is arranged in the recovery tower 1, and an air inlet, an air outlet and a feeding port are arranged on the inner side wall of the heat exchange cavity in a penetrating manner; the ventilation device comprises an air inlet pipeline 21 mounted to the air inlet and used for conveying high-temperature raw coke oven gas into the heat exchange cavity; the feeding device comprises a feeding pipeline 31 which is arranged at the feeding port and used for conveying heat absorption solid media to the heat exchange cavity, and the heat absorption solid media and the high-temperature raw gas are mixed to absorb heat so as to cool the high-temperature raw gas into low-temperature raw gas and discharge the low-temperature raw gas through the gas outlet.
According to the technical scheme, high-temperature raw gas is continuously conveyed into the heat exchange cavity through the air inlet pipeline 21, heat-absorbing solid medium is conveyed into the heat exchange cavity through the feeding pipeline 31, the heat-absorbing solid medium and the high-temperature raw gas are mixed in the heat exchange cavity, and the heat-absorbing solid medium absorbs heat to reduce the temperature of the high-temperature raw gas into low-temperature raw gas, so that the sensible heat recovery device of the raw gas of the coke oven does not need to consider the problems of waste water generation and coking and carbon deposition caused by too low temperature, the heat-absorbing solid medium can absorb more heat, and the sensible heat recovery efficiency is greatly improved.
It should be noted that the heat absorption solid medium in the heat exchange cavity may have a plurality of discharging methods, and may be discharged uniformly after one-time heat exchange is completed, or the heat absorption solid medium may be conveyed outwards while heat exchange is being performed.
Further, the heat exchange cavity comprises a first cavity section with a larger cross section and a second cavity section with a smaller cross section which are sequentially arranged from top to bottom; wherein a guide ramp is formed between the first cavity section and the second cavity section. Through the size difference of the first cavity section and the second cavity section, the high-temperature raw coke oven gas can generate circulating air in the heat exchange cavity, and the heat absorption solid medium is prevented from being accumulated through the guide inclined plane.
In an embodiment provided by the present invention, the feeding pipeline 31 includes a pressure pipeline 311 and a material pipeline 312, the pressure pipeline 311 is communicated with the heat exchange cavity, the material pipeline 312 is communicated with the pressure pipeline 311, the material pipeline 312 transports the heat absorption solid medium, a pressure gas is communicated in the pressure pipeline 311, and the pressure gas is used for driving the heat absorption solid medium to enter the heat exchange cavity to be mixed with the high-temperature raw coke oven gas. The heat absorption solid medium is blown into the heat exchange cavity by using pressure gas, so that the heat absorption solid medium is uniformly and discretely distributed in the heat exchange cavity, the heat absorption solid medium can be in contact with the raw coke oven gas more fully, and the heat exchange is more effective.
In addition, in this embodiment, the discharge port is disposed at the lower end of the side wall surface of the heat exchange cavity so as to facilitate the falling and discharging of the settled heat absorption solid medium, and the fluidized bed is disposed on the bottom wall surface of the heat exchange cavity so as to fluidize the heat absorption solid medium and facilitate the discharging from the discharge port.
Specifically, in this embodiment, the pressure gas is purified gas, and is introduced into the pressure gas, and is mixed with the raw coke oven gas and then discharged, so that the raw coke oven gas is sufficiently combusted.
In addition, the pressure gas may be mixed with other protective or combustion-supporting gases as appropriate, which are well known in the art and not described herein.
Referring to fig. 2, in another embodiment of the present invention, the heat exchange cavity has an air inlet end and an air outlet end that are oppositely disposed from bottom to top, the air inlet is disposed on an inner sidewall of the air inlet end, and the air outlet is disposed on an inner sidewall of the air outlet end; the feeding port is arranged between the air inlet end and the air outlet end. The gas outlet sets up the upper end of air inlet, high temperature crude gas is by supreme discharge down, the feed inlet sets up the air inlet and between the gas outlet, the solid-state medium of heat absorption from top to bottom falls, through crude gas with the heat absorption solid-state medium countercurrent flow heat transfer, improves heat exchange efficiency.
In this embodiment, the discharge hole is formed in the bottom wall surface of the heat exchange cavity, so that the heat absorbing solid medium directly falls and is discharged.
In addition, in order to make the contact between the heat-absorbing solid medium and the raw coke oven gas more sufficient, the sensible heat recovery device 100 of the coke oven raw coke oven gas further comprises a flow dividing device, wherein the flow dividing device is installed in the heat exchange cavity and is positioned between the feeding port and the air inlet end; the flow dividing device comprises a flow dividing plate 41 extending horizontally, the flow dividing plate 41 is rotatably mounted in the heat exchange cavity along an up-down axis, and a plurality of flow dividing holes uniformly distributed penetrate through the upper end face of the flow dividing plate 41. Through setting up flow distribution plate 41 for heat absorption solid state medium can fall earlier when falling on flow distribution plate 41, along with flow distribution plate 41's motion is dispersed, and passes through the reposition of redundant personnel hole whereabouts, thereby makes heat absorption solid state medium evenly distributed, with the raw coke oven gas fully contacts, it should be said that flow distribution plate 41 can be provided with a plurality ofly along the vertical.
Similarly, in order to make the raw coke oven gas and the heat absorbing solid medium fully contact with each other, the sensible heat recovery device 100 further comprises a gas distribution device, wherein the gas distribution device is installed in the heat exchange cavity and is located between the feeding port and the air inlet end; the gas distribution device comprises a gas guide plate 51 extending along the horizontal direction, a gas collection cavity is formed in the gas guide plate 51, a plurality of gas holes are formed in the upper end face of the gas guide plate 51 in a penetrating mode and communicated with the gas collection cavity, and a gas collection opening is formed in the lower wall face of the gas collection cavity in a penetrating mode and used for introducing high-temperature raw coke oven gas fed from the gas inlet. The raw coke oven gas is collected by the gas collecting cavity and is discharged through the gas holes, so that the raw coke oven gas is gathered and then is contacted with the heat-absorbing solid medium, the contact is more sufficient, and the heat-absorbing efficiency of the heat-absorbing solid medium is further improved.
It should be noted that, in the two related technical features of the flow dividing device and the gas distribution device, they may exist alternatively or simultaneously, and obviously, the technical effect brought by the simultaneous existence is better.
In addition, the sensible heat recovery device 100 for the raw coke oven gas further comprises a gas distributor 6 installed in the heat exchange cavity, and an input port of the gas distributor 6 is communicated with the gas inlet pipeline 21. The raw coke oven gas is uniformly distributed in the heat exchange cavity through the gas distributor 6.
Further, the sensible heat recovery device 100 for the raw coke oven gas further comprises a plurality of nozzles, air inlets of the plurality of nozzles are communicated to the output port of the gas distributor, and nozzle angles of the plurality of nozzles are different, so that the high-temperature raw coke gas is uniformly sprayed into the heat exchange cavity from different angles, and solid-gas heat exchange is more sufficient.
In order to collect the cooled raw coke oven gas, an air outlet pipeline 22 is arranged at the air outlet, a purification precipitation body 7 is arranged on the air outlet pipeline 22, a purification precipitation cavity is formed in the purification precipitation body 7, and a cyclone separator is arranged in the purification precipitation cavity and used for purifying and precipitating the low-temperature raw coke oven gas discharged from the air outlet. And the cyclone separator prevents the raw coke oven gas from being discharged to bring out part of the heat absorption solid medium.
In the present invention, a screw conveying blade is provided in the feeding pipe 31. The heat absorption solid medium can conveniently and uniformly enter the heat exchange cavity.
Specifically, the heat-absorbing solid medium is one or more of coke, quartz sand, metal particles and blue carbon; make transportation and heat absorption effect best, in this embodiment, the heat absorption solid state medium is the coke, the high temperature coke that forms after the coke absorbs heat can be carried out further recycle, can carry out the reburning, and then is used for power generation etc. the use of coke is common technique, does not describe here again.
It should be noted that, in the above three related technical features, they may exist alternatively or simultaneously, and obviously, the technical effect brought by the simultaneous existence of the above three related technical features is the best.
In addition, in order to prevent the high-temperature raw gas from leaking from the feeding port, the feeding device further comprises a sealing structure, the sealing structure comprises a main feeding pipeline 81 and a sealing circulating pipeline 82, the main feeding pipeline 81 is communicated with the feeding pipeline 31, the heat absorption solid medium is transported in the main feeding pipeline 81, a first circulating port penetrates through the lower wall surface of the main feeding pipeline 81, a second circulating port penetrates through the upper wall surface of the main feeding pipeline 81, and a filter screen is mounted on the first circulating port; the sealed circulation pipe 82 includes a first circulation pipe attached to the first circulation port, and a second circulation pipe attached to the second circulation port, and the first circulation pipe is communicated to the second circulation pipe. When the main feeding pipeline 81 conveys heat absorption solid media to enter the feeding pipeline 31, the heat absorption solid media comprise blocky heat absorption solids with larger particle sizes and dusty solids with smaller particle sizes, wherein dust parts fall into the first circulating pipeline through the first circulating port and leak out through the second circulating port, and when the blocky heat absorption solids with larger particle sizes are conveyed to enter the feeding pipeline 31, the dusty solids exposed through the second circulating port are filled among the blocky heat absorption solids and enter the feeding pipeline 31 together, so that a dust sealing layer is formed at an inlet of the feeding pipeline 31, and the leakage of the high-temperature raw gas is prevented.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents made by the contents of the present specification and drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The coke oven raw gas sensible heat recovery device is characterized by comprising the following components:
the recovery tower is internally provided with a heat exchange cavity, and the inner side wall of the heat exchange cavity is provided with an air inlet, an air outlet and a feeding port in a penetrating manner;
the ventilation device comprises an air inlet pipeline mounted to the air inlet and is used for conveying high-temperature raw coke oven gas into the heat exchange cavity; and the number of the first and second groups,
and the feeding device comprises a feeding pipeline which is arranged to the feeding port and is used for conveying a heat absorption solid medium into the heat exchange cavity, and the heat absorption solid medium and the high-temperature raw gas are mixed to absorb heat so as to reduce the temperature of the high-temperature raw gas into low-temperature raw gas and discharge the low-temperature raw gas through the gas outlet.
2. The coke oven raw gas sensible heat recovery device of claim 1, wherein the heat exchange cavity comprises a first cavity section with a larger cross section and a second cavity section with a smaller cross section which are arranged from top to bottom in sequence;
wherein a guide ramp is formed between the first cavity section and the second cavity section.
3. The sensible heat recovery device of coke oven raw gas as claimed in claim 1, wherein the feeding pipeline comprises a pressure pipeline and a material pipeline, the pressure pipeline is communicated to the heat exchange cavity, the material pipeline is communicated to the pressure pipeline, the heat absorption solid medium is transported in the material pipeline, a pressure gas is communicated in the pressure pipeline, and the pressure gas is used for driving the heat absorption solid medium to enter the heat exchange cavity to be mixed with the high temperature raw gas.
4. The coke oven raw gas sensible heat recovery apparatus of claim 3, wherein the pressure gas is clean gas.
5. The coke oven raw gas sensible heat recovery device of claim 1, wherein the heat exchange cavity has an air inlet end and an air outlet end which are oppositely arranged from bottom to top, the air inlet is arranged on the inner side wall of the air inlet end, and the air outlet is arranged on the inner side wall of the air outlet end;
the feeding port is arranged between the air inlet end and the air outlet end.
6. The coke oven raw gas sensible heat recovery apparatus of claim 5, further comprising a flow splitting device mounted into the heat exchange chamber between the feed port and the inlet end; the flow dividing device comprises a flow dividing plate extending horizontally, the flow dividing plate is rotatably arranged in the heat exchange cavity along an up-down axis, and a plurality of uniformly distributed flow dividing holes penetrate through the upper end surface of the flow dividing plate; and/or the presence of a gas in the gas,
the sensible heat recovery device for the raw coke oven gas further comprises a gas distribution device, and the gas distribution device is installed in the heat exchange cavity and is positioned between the feeding port and the gas inlet end;
the gas distribution device comprises a gas guide plate extending along the horizontal direction, a gas collection cavity is formed in the gas guide plate, a plurality of gas holes are formed in the upper end face of the gas guide plate and communicated with the gas collection cavity, and a gas collection opening is formed in the lower wall face of the gas collection cavity and used for introducing high-temperature raw coke oven gas fed from the gas inlet.
7. The coke oven raw gas sensible heat recovery apparatus of claim 1, further comprising a gas distributor mounted into the heat exchange chamber, the gas distributor input port being in communication with the gas inlet duct.
8. The coke oven raw gas sensible heat recovery apparatus of claim 7, further comprising a plurality of nozzles, wherein air inlets of the plurality of nozzles are communicated to the output of the gas distributor, and wherein nozzle angles of the plurality of nozzles are different.
9. The sensible heat recovery device of coke oven raw gas as claimed in claim 1, wherein an air outlet is provided at the air outlet, a purifying and precipitating body is provided on the air outlet, a purifying and precipitating cavity is formed in the purifying and precipitating body, and a cyclone separator is provided in the purifying and precipitating cavity for purifying and precipitating the low temperature raw gas discharged from the air outlet; and/or the presence of a gas in the gas,
a spiral conveying blade is arranged in the feeding pipeline; and/or the presence of a gas in the gas,
the heat-absorbing solid medium is one or more of coke, quartz sand, metal particles and blue carbon.
10. The coke oven raw gas sensible heat recovery apparatus of claim 1, wherein the feeding device further comprises a sealing structure, the sealing structure comprising:
the main feeding pipeline is communicated to the feeding pipeline and is used for transporting the heat absorption solid medium, a first circulating port penetrates through the lower wall surface of the main feeding pipeline, a second circulating port penetrates through the upper wall surface of the main feeding pipeline, and a filter screen is mounted on the first circulating port; and the number of the first and second groups,
a sealed circulation pipe including a first circulation pipe mounted to the first circulation port, and a second circulation pipe mounted to the second circulation port, and the first circulation pipe being communicated to the second circulation pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010520432.0A CN111637779B (en) | 2020-06-09 | 2020-06-09 | Coke oven raw gas sensible heat recovery device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010520432.0A CN111637779B (en) | 2020-06-09 | 2020-06-09 | Coke oven raw gas sensible heat recovery device |
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| CN111637779A true CN111637779A (en) | 2020-09-08 |
| CN111637779B CN111637779B (en) | 2021-11-26 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003314270A (en) * | 2002-04-19 | 2003-11-06 | Denso Corp | Heat exchanger |
| CN203881179U (en) * | 2014-05-29 | 2014-10-15 | 唐山德业节能环保科技有限公司 | Waste heat recycling device of raw coke oven gas |
| CN204509192U (en) * | 2015-02-25 | 2015-07-29 | 鞍山拜尔自控有限公司 | A kind of coke oven coke oven uprising tube heat exchange heat-energy recovering apparatus |
| CN110551509A (en) * | 2019-09-26 | 2019-12-10 | 葛霖 | heat exchange medium flow self-balancing crude gas waste heat recovery heat exchanger riser |
| FR3082926A1 (en) * | 2018-06-25 | 2019-12-27 | Renault S.A.S. | HEAT EXCHANGER |
| CN111121473A (en) * | 2020-01-10 | 2020-05-08 | 北京科技大学 | Variable-porosity amorphous porous medium metal heat exchanger for coke oven ascension pipe |
-
2020
- 2020-06-09 CN CN202010520432.0A patent/CN111637779B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003314270A (en) * | 2002-04-19 | 2003-11-06 | Denso Corp | Heat exchanger |
| CN203881179U (en) * | 2014-05-29 | 2014-10-15 | 唐山德业节能环保科技有限公司 | Waste heat recycling device of raw coke oven gas |
| CN204509192U (en) * | 2015-02-25 | 2015-07-29 | 鞍山拜尔自控有限公司 | A kind of coke oven coke oven uprising tube heat exchange heat-energy recovering apparatus |
| FR3082926A1 (en) * | 2018-06-25 | 2019-12-27 | Renault S.A.S. | HEAT EXCHANGER |
| CN110551509A (en) * | 2019-09-26 | 2019-12-10 | 葛霖 | heat exchange medium flow self-balancing crude gas waste heat recovery heat exchanger riser |
| CN111121473A (en) * | 2020-01-10 | 2020-05-08 | 北京科技大学 | Variable-porosity amorphous porous medium metal heat exchanger for coke oven ascension pipe |
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Effective date of registration: 20240726 Address after: 441309 group 6, Qinlao community neighborhood committee, Lishan Town, Sui County, Suizhou City, Hubei Province Patentee after: HUBEI MAOSHENG BIOLOGY Co.,Ltd. Country or region after: China Address before: 430023 No. 68, Xuefu Road, Changqing Garden, Dongxihu District, Wuhan, Hubei Patentee before: WUHAN POLYTECHNIC University Country or region before: China |