CN108913169B - Dry quenching furnace with water-cooling support frame and annular pre-chamber and working method thereof - Google Patents
Dry quenching furnace with water-cooling support frame and annular pre-chamber and working method thereof Download PDFInfo
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- CN108913169B CN108913169B CN201811052370.4A CN201811052370A CN108913169B CN 108913169 B CN108913169 B CN 108913169B CN 201811052370 A CN201811052370 A CN 201811052370A CN 108913169 B CN108913169 B CN 108913169B
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- 238000001816 cooling Methods 0.000 title claims abstract description 112
- 238000010791 quenching Methods 0.000 title claims abstract description 38
- 230000000171 quenching effect Effects 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 90
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000005204 segregation Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000003860 storage Methods 0.000 claims abstract description 5
- 238000009825 accumulation Methods 0.000 claims abstract description 4
- 238000005192 partition Methods 0.000 claims description 7
- 239000007769 metal material Substances 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 3
- 238000009826 distribution Methods 0.000 abstract description 2
- 239000000571 coke Substances 0.000 description 11
- 239000004744 fabric Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000004939 coking Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004534 cecum Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- 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
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- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Coke Industry (AREA)
Abstract
The invention relates to a dry quenching furnace with a water-cooling support frame and an annular pre-chamber and a working method thereof, wherein an upper inner annular wall and an upper outer annular wall form the annular pre-chamber; a water-cooling support frame is arranged in the upper space of the cooling chamber and comprises a plurality of cross beams, and a pre-stored airflow channel and a water-cooling jacket are arranged in the cross beams; the material under the lower inner cylinder, the inner ring top plate and the lower inner ring wall encloses a closed space, the lower inner cylinder is communicated with one end of each pre-stored air flow channel, and the other end of each pre-stored air flow channel is communicated with the annular air channel; the lower space of the cooling chamber is a material accumulation area; the water cooling jacket is connected with the upper inner cylinder through a flow guide pipe, a long-shaft submerged pump and a floating ball liquid level meter are arranged in the upper inner cylinder, the long-shaft submerged pump is controlled by the floating ball liquid level meter, and the water outlet end of the long-shaft submerged pump is connected with an external deaerator. The invention can overcome the defects of the conventional dry quenching furnace structure, reduce the segregation of the material distribution, reduce the high pressure at the top of the pre-storage chamber caused by the material with large unit material layer resistance, and reduce the resistance loss of circulating gas.
Description
Technical Field
The invention relates to the technical field of dry quenching furnaces, in particular to a dry quenching furnace with a water-cooling support frame and an annular pre-chamber and a working method thereof.
Background
The dry quenching furnace is an important energy-saving and environment-friendly facility for coking production, and can be used for cooling the incandescent coke pushed out of the coke furnace and recovering a large amount of heat energy carried by the coke, and also avoiding water and gas pollution caused by wet quenching to the environment, so that the dry quenching furnace is widely applied to the coking field. The coke oven production has periodicity and intermittence, and the coke oven system needs to be overhauled regularly (the daily maximum overhauling time of the coke oven machinery reaches 2 hours), so the time and the frequency of the coke loading into the dry quenching furnace for cooling are influenced and restricted by the coke oven production; on the other hand, the coke supply of the cooling chamber in the dry quenching furnace is required to be continuous and stable so as to ensure the continuous and stable operation of the heat energy recycling system. In order to achieve the above-mentioned goal, a pre-storing chamber is usually set on the upper portion of the dry quenching furnace and above the cooling chamber, and is used for temporarily storing a certain amount of coke, so that it is suitable for the production requirement of daily regular maintenance of coke furnace.
The pre-chamber of the conventional dry quenching furnace is generally cylindrical (as shown in fig. 1), materials are periodically filled from an opening 1-1 at the top of the pre-chamber, freely fall into the pre-chamber 1-2 under the action of gravity, naturally accumulate in the cylindrical space of the pre-chamber 1-2 to form a material layer 1-3 with an annular peak at the top, and the materials at the lower part of the pre-chamber 1-2 accumulate in a cylindrical shape and gradually enter a cooling chamber 1-4. An annular air duct 1-5 for guiding out circulating gas for cooling the hot materials is arranged at the lower part of the pre-storing chamber 1-2, and the annular air duct 1-5 is surrounded by an inner annular wall 1-6 and an outer annular wall 1-7. The lower parts of the inner annular wall 1-6 and the outer annular wall 1-7 are supported by brackets 1-8 on the upper part of the cooling chamber 1-4, and a chute 1-9 is arranged between the lower part of the inner annular wall 1-6 and the brackets 1-8 and used for guiding out circulating gas for obtaining heat energy of materials. The above-mentioned conventional cylindrical pre-chambers have the following drawbacks:
1) Because the diameter of the pre-chamber 1-2 is larger, the materials are in an inclined throwing curve motion state of being layered up and down and not being restrained at the inner side and the outer side after being distributed by the bell 1-10, particularly when the material level in the pre-chamber 1-2 is lower, the material drop height difference is larger, the segregation of the materials is aggravated by the large drop impact, namely the materials with larger granularity tend to be distributed at the two sides of a material peak, and the materials with smaller granularity are distributed in the middle of the material peak. The segregation of the cloth also causes segregation of cooling air flow, so that the material cooling degree is uneven, and the heat energy of the material cannot be effectively recovered, so that the cooling efficiency of the dry quenching furnace is seriously reduced. The above conditions are even more disadvantageous when the materials are mixtures with a large difference in properties.
2) When materials are arranged in the pre-chamber 1-2 of the dry quenching furnace, the inside of the pre-chamber is of a solid 'cecum' structure, and air flow can only be led out through the inclined channel opening 1-9 positioned at the periphery of the lower opening material layer of the pre-chamber 1-2, and the air flow speed is higher due to the limited area of the inclined channel opening 1-9. For the materials with larger resistance per unit material layer, the energy consumption for conveying the circulating gas is increased, the pressure distribution state in the material layer is changed, the positive pressure at the top of the pre-chamber 1-2 is larger, and dust escapes during loading, so that the environment is seriously polluted.
In addition, the corbel support structure adopted in the pre-chamber of the conventional dry quenching furnace has the following defects:
1) The brackets 1-8 are formed by overhanging the brickwork layer by layer in the chute section, and the brackets are easy to damage because the brackets need to bear the load of the brickwork at the upper part, the impact abrasion of side materials and the violent scouring of cooling air flow and material dust under the working condition of frequent temperature fluctuation, and the structural strength of the damaged brackets is reduced, so that the structural stability of the inner annular wall 1-6 is affected.
2) The layer-by-layer overhanging structure also results in the length and height of the brackets 1-8 being limited, thereby resulting in the circulation cross section of the circulating gas of the annular air duct 1-5 and the chute mouth 1-9 being limited.
3) The existence of the bracket 1-8 reduces the flow area of the inclined passage opening 1-9, increases the flow velocity of circulating gas of the inclined passage opening 1-9, increases the resistance loss of circulating gas flowing through and the positive pressure at the top of the pre-storage chamber 1-2, also enables the inclined passage opening 1-9 to be more easily subjected to material floating phenomenon, causes the inclined passage opening 1-9 to be seriously blocked, and further increases the operation energy consumption of a circulating system.
Disclosure of Invention
The invention provides a dry quenching furnace with a water-cooling support frame and an annular pre-chamber and a working method thereof, which can overcome the defects of a conventional dry quenching furnace structure, reduce the segregation of cloth, reduce the high pressure at the top of the pre-chamber caused by materials with high unit material layer resistance and reduce the resistance loss of circulating gas; meanwhile, a plurality of adverse effects existing when the corbel is arranged in the conventional dry quenching furnace can be avoided, and the occurrence of material floating phenomenon is reduced.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
the dry quenching furnace comprises a furnace shell, a pre-chamber and a cooling chamber; the pre-storing chamber and the cooling chamber are arranged in the furnace shell one by one; the pre-storing chamber is an annular pre-storing chamber, the lower inner annular wall and the upper inner annular wall are aligned and connected in the vertical direction, and the lower outer annular wall and the upper outer annular wall are aligned and connected in the vertical direction to form the annular pre-storing chamber together; the method comprises the steps of carrying out a first treatment on the surface of the The upper inner annular wall forms an upper inner cylinder, a rain cap is arranged at the top of the upper inner cylinder, and an inner annular top plate is arranged at the bottom of the upper inner cylinder; a cooling chamber is arranged below the annular pre-storing chamber; an annular air channel is formed by encircling the upper outer annular wall, the lower outer annular wall, the outer wall of the cooling chamber and the material surface at the top of the cooling chamber, and an outer annular top plate is arranged at the top of the annular air channel; the lower part of the annular pre-storing chamber is provided with a water-cooling support frame, the water-cooling support frame comprises a plurality of cross beams arranged along the radial direction of the dry quenching furnace, the cross beams penetrate through the outer wall of the cooling chamber and then are erected on the furnace shell, and a pre-storing airflow channel and a water-cooling jacket are arranged in the cross beams; the middle part of the water-cooling support frame is provided with 2 circles of concentric ring beams; a partition wall is arranged between the outer wall of the cooling chamber on one side of the annular air duct and the upper outer annular wall as well as between the outer annular wall of the cooling chamber on the other side of the annular air duct opposite to the partition wall, and a guide wall and a circulating gas outlet are arranged on the other side of the annular air duct; the lower inner cylinder is communicated with one end of each pre-stored airflow channel, and the other end of each pre-stored airflow channel is communicated with the annular air channel; the water cooling jacket is connected with the upper inner cylinder through a flow guide pipe, a long-shaft submerged pump and a floating ball liquid level meter are arranged in the upper inner cylinder, the long-shaft submerged pump is controlled by the floating ball liquid level meter, and the water outlet end of the long-shaft submerged pump is connected with an external deaerator.
The water-cooling support frame consists of a plurality of cross beams and 2 circles of concentric ring beams, and the cross beams penetrate through the concentric ring beams; the cross beam is of a double-layer box-shaped jacket structure, and the hollow part of the inner layer of the cross beam is used as a pre-stored airflow channel for guiding circulating gas in the lower inner cylinder into the annular air channel; the outer layer is a water-cooling jacket; one end of the water-cooling jacket, which is close to the furnace shell, is provided with a demineralized water inlet which is connected with a demineralized water outlet of a water supply pump of an external boiler, and one end of the water-cooling jacket, which is close to the lower inner cylinder, is connected with the upper inner cylinder through a flow guide pipe.
The cross beam is made of metal materials, and is provided with refractory lining layers on the inner surface and the outer surface and a circulating gas flow regulating device.
The concentric ring beam is made of heat-resistant metal materials, the top of the concentric ring beam is provided with a middle cross beam and is fixedly connected with the inner ring of the concentric ring beam, and the inner ring top plate is built below the middle cross beam.
The working method of the dry quenching furnace with the water-cooling support frame and the annular pre-chamber comprises the following steps:
1) The hot materials are filled into the annular pre-storing chamber from the material filling port by the distributor, distributed in an annular peak shape and downwards moved under the action of gravity; the radial segregation degree caused by natural accumulation of materials is small due to the limited width of the annular pre-chamber;
2) In the process of loading materials into the annular pre-storage chamber and moving downwards, the materials are blocked by a plurality of uniformly distributed cross beams on the water-cooling support frame, and the formed relative movement is equivalent to the stirring process, so that the segregation state of the generated materials is further destroyed, and the materials tend to be uniform;
3) After the materials flow out from the bottom of the annular pre-chamber, the materials are naturally piled up in the lower space of the cooling chamber to form a material pile with annular peaks; circulating gas fed from the bottom of the cooling chamber and hot materials in the cooling chamber fully exchange heat and then pass through the material layer to enter the upper space of the cooling chamber, wherein one part of circulating gas passes through the inclined material surface in the middle part to enter the lower inner cylinder, then enters the annular air duct through the pre-stored airflow channel and is converged with the other part of circulating gas which passes through the inclined material surface in the outer side and directly enters the annular air duct; the plurality of pre-stored air flow channels uniformly distributed along the circumferential direction of the dry quenching furnace enable the air flow in the lower inner cylinder and the annular air duct to be uniformly mixed, so that the stability of the temperature of the output air flow is more facilitated, and the converged circulating gas is discharged through a circulating gas outlet on one side of the annular air duct;
4) The water cooling jacket of each beam is internally communicated with desalted water after a boiler feed pump, the whole water cooling support frame is cooled, and the desalted water is pumped to the deaerator by the long shaft submerged pump after being heated, so that the strength of the water cooling support frame is ensured, and the low-pressure steam consumption of the deaerator is saved.
Compared with the prior art, the invention has the beneficial effects that:
1) The annular pre-chamber is adopted, the segregation degree of the material is greatly reduced after the material is uniformly filled into a narrower annular space along the circumferential direction, the material is blocked by a lower water-cooling support frame in the process of being filled into the annular pre-chamber and moving downwards, and the relative movement of the material and the annular pre-chamber is similar to the stirring process, so that the segregation state of the material which is generated can be further destroyed, and the material tends to be uniform;
2) Under the constraint of the annular pre-chamber, the total area of the inner and outer material surfaces formed at the upper part of the cooling chamber is increased, and the inner circulating gas can be rapidly guided out to the annular air channel through the pre-stored air flow channel, so that uniform guiding out of the circulating gas is facilitated, and the resistance of the circulating gas and the running energy consumption of a system are reduced;
3) After the annular pre-chamber is adopted, the material seal with enough height is arranged between the upper space of the cooling chamber and the material inlet at the top of the pre-chamber, so that the gas circulation system and the material inlet are effectively isolated, and the influence of the pressure of the upper space of the cooling chamber on the material loading device is eliminated;
4) Part of circulating gas passing through the material layer enters the lower inner cylinder and enters the annular air duct through pre-stored air flow channels, and the uniformly distributed pre-stored air flow channels enable the air flows of the lower inner cylinder and the annular air duct to be uniformly mixed, so that the stability of the temperature of the output air flow is facilitated;
5) The main body of the annular pre-chamber is supported by the water-cooling support frame and finally acts on the furnace shell, so that the load on the lower cooling chamber masonry is obviously reduced, the conventional bracket structure is eliminated, the structure of the dry quenching furnace is more stable, the maintenance and overhaul cost is obviously reduced, and the service life can be obviously prolonged;
6) The demineralized water after the boiler feed water pump is adopted to cool the water-cooling support frame, and the demineralized water is heated and then is sent to the deaerator, so that the strength of the water-cooling support frame is ensured, the low-pressure steam consumption of the deaerator is saved, and the heat exchange efficiency of the dry quenching furnace is improved as a whole.
Drawings
Fig. 1 is a schematic structural view of a conventional dry quenching furnace.
Fig. 2 is a front view of a dry quenching furnace with a water-cooled support frame and an annular pre-chamber according to the present invention.
Fig. 3 is A-A view of fig. 2.
Fig. 4 is a B-B view in fig. 2.
In the figure: 1-1, 1-2 of the top opening of the pre-chamber, 1-3 of the pre-chamber, 1-4 of the material layer with annular peaks at the top, 1-5 of the cooling chamber, 1-6 of the annular air duct, 1-7 of the inner annular wall, 1-8 of the outer annular wall, 1-9 of the bracket, 1-10 of the chute and the bell
1. Upper inner annular wall 2, upper outer annular wall 3, annular pre-chamber 4, lower inner cylinder 5, pre-stored air flow channel 6, annular duct 7, partition 8, guide wall 9, water cooled support frame 10, outer annular top plate 11, inner annular top plate 12, lower inner annular wall 13, lower outer annular wall 14, cooling chamber outer wall 15, material loading inlet 16, circulating gas outlet 17, circulating gas flow regulator 18, desalted water inlet 19, water cooled jacket 20, guide tube 21, furnace shell 22, rain cap 23, cross beam 24, concentric annular beam 25, middle cross beam 26, upper inner cylinder 27, long shaft submerged pump 28, floating ball level gauge 29, cooling chamber
Detailed Description
The following is a further description of embodiments of the invention, taken in conjunction with the accompanying drawings:
as shown in fig. 2-4, the dry quenching furnace with the water-cooling support frame and the annular pre-chamber comprises a furnace shell 21, a pre-chamber and a cooling chamber; the pre-storing chamber and the cooling chamber are arranged in the furnace shell 21 one by one; the pre-storing chamber is an annular pre-storing chamber 3, the lower inner annular wall 12 is aligned and connected with the upper inner annular wall 1 along the vertical direction, and the lower outer annular wall 13 is aligned and connected with the upper outer annular wall 2 along the vertical direction to form the annular pre-storing chamber 3 together; the upper inner annular wall 1 forms an upper inner cylinder 26, a rain cap 22 is arranged at the top of the upper inner cylinder 26, and an inner annular top plate 11 is arranged at the bottom of the upper inner cylinder 26; below the annular pre-chamber 3 is a cooling chamber 29; an annular air duct 6 is formed by encircling the upper outer annular wall 2, the lower outer annular wall 13, the cooling chamber outer wall 14 and the material surface at the top of the cooling chamber 29, and an outer annular top plate 10 is arranged at the top of the annular air duct 6; the lower part of the annular pre-chamber 3 is provided with a water-cooling support frame 9, the water-cooling support frame 9 comprises a plurality of cross beams 23 arranged along the radial direction of the dry quenching furnace, the cross beams 23 penetrate through the outer wall 14 of the cooling chamber and then are erected on the furnace shell 21, and a pre-stored airflow channel 5 and a water-cooling jacket 19 are arranged in the cross beams 23; the middle part of the water-cooling support frame 9 is provided with 2 circles of concentric ring beams 24; a partition wall 7 is arranged between the cooling chamber outer wall 14 on one side of the annular air duct 6 and the upper outer ring wall 2 and the lower outer ring wall 13, and a guide wall 8 and a circulating gas outlet 16 are arranged on the other side of the annular air duct 6 opposite to the partition wall 7; the materials in the lower inner annular wall 12, the inner annular top plate 11 and the cooling chamber 29 jointly form a lower inner cylinder 4, the lower inner cylinder 4 is communicated with one end of each pre-stored air flow channel 5, and the other end of each pre-stored air flow channel 5 is communicated with the annular air duct 6; the water cooling jacket 19 is connected with an upper inner cylinder 26 through a flow guide pipe 20, a long-shaft submerged pump 27 and a floating ball liquid level meter 28 are arranged in the upper inner cylinder 26, the long-shaft submerged pump 27 is controlled by the floating ball liquid level meter 28, and the water outlet end of the long-shaft submerged pump 27 is connected with an external deaerator.
The water-cooling support frame 9 consists of a plurality of cross beams 23 and 2 circles of concentric ring beams 24, and the cross beams 23 penetrate through the concentric ring beams 24; the cross beam 23 is of a double-layer box-shaped jacket structure, and the hollow part of the inner layer is used as a pre-stored airflow channel 5 for guiding circulating gas in the lower inner cylinder 4 into the annular air channel 6; the outer layer is a water-cooling jacket 19; the water cooling jacket 19 is provided with a desalted water inlet 18 at one end close to the furnace shell 21 and is connected with a desalted water outlet of an external boiler feed pump, and one end of the water cooling jacket 19 close to the lower inner cylinder 4 is connected with the upper inner cylinder 26 through a flow guide pipe 20.
The cross beam 23 is made of metal material, and is provided with refractory lining layers on the inner surface and the outer surface, and a circulating gas flow regulating device 17.
The concentric ring beam 24 is made of heat-resistant metal material, the top of the concentric ring beam is provided with a middle cross beam 25, the middle cross beam is fixedly connected with the inner ring of the concentric ring beam 24, and the inner ring top plate 10 is built below the middle cross beam 25.
The working method of the dry quenching furnace with the water-cooling support frame and the annular pre-chamber comprises the following steps:
1) The hot materials are filled into the annular pre-storing chamber 3 from the material filling inlet 15 through the distributor, distributed in an annular peak shape and move downwards under the action of gravity; the radial segregation degree caused by natural accumulation of materials is small because the width of the annular pre-chamber 3 is limited;
2) In the process of loading the materials into the annular pre-storage chamber 3 and moving downwards, the materials are blocked by a plurality of uniformly distributed cross beams 23 on the water-cooling support frame 9, and the formed relative movement is equivalent to the stirring process, so that the segregation state of the generated cloth is further destroyed, and the cloth tends to be uniform;
3) After the material flows out from the bottom of the annular pre-chamber 3, the material is naturally piled up in the lower space of the cooling chamber 29 to form a material pile with annular peaks; the circulating gas supplied from the bottom of the cooling chamber 29 and the hot material in the cooling chamber 29 fully exchange heat and then pass through the material layer to enter the upper space of the cooling chamber 29, wherein one part of the circulating gas passes through the inclined material surface in the middle part to enter the lower inner cylinder 4, then enters the annular air duct 6 through the pre-stored air flow channel 5 and is converged with the other part of the circulating gas which passes through the inclined material surface in the outer side and directly enters the annular air duct 6; the plurality of pre-stored air flow channels 5 uniformly distributed along the circumferential direction of the dry quenching furnace uniformly mix the air flows in the lower inner cylinder 4 and the annular air duct 6, so that the stability of the temperature of the output air flow is more facilitated, and the converged circulating gas is discharged through a circulating gas outlet 16 at one side of the annular air duct 6;
4) The water cooling jacket 19 of each beam 23 is internally provided with desalted water after a boiler feed pump, the whole water cooling support frame 9 is cooled, and the desalted water is heated and then is sent to the deaerator by the long-shaft submerged pump 27, so that the strength of the water cooling support frame 9 is ensured, and the low-pressure steam consumption of the deaerator is saved.
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 furnace comprises a furnace shell, a pre-chamber and a cooling chamber; the pre-storing chamber and the cooling chamber are arranged in the furnace shell one by one; the pre-storing chamber is an annular pre-storing chamber, wherein the lower inner annular wall and the upper inner annular wall are aligned and connected in the vertical direction, and the lower outer annular wall and the upper outer annular wall are aligned and connected in the vertical direction to form the annular pre-storing chamber together; the upper inner annular wall forms an upper inner cylinder, a rain cap is arranged at the top of the upper inner cylinder, and an inner annular top plate is arranged at the bottom of the upper inner cylinder; a cooling chamber is arranged below the annular pre-storing chamber; an annular air channel is formed by encircling the upper outer annular wall, the lower outer annular wall, the outer wall of the cooling chamber and the material surface at the top of the cooling chamber, and an outer annular top plate is arranged at the top of the annular air channel; the lower part of the annular pre-storing chamber is provided with a water-cooling support frame, the water-cooling support frame comprises a plurality of cross beams arranged along the radial direction of the dry quenching furnace, the cross beams penetrate through the outer wall of the cooling chamber and then are erected on the furnace shell, and a pre-storing airflow channel and a water-cooling jacket are arranged in the cross beams; the middle part of the water-cooling support frame is provided with 2 circles of concentric ring beams; a partition wall is arranged between the outer wall of the cooling chamber on one side of the annular air duct and the upper outer annular wall as well as between the outer annular wall of the cooling chamber on the other side of the annular air duct opposite to the partition wall, and a guide wall and a circulating gas outlet are arranged on the other side of the annular air duct; the lower inner cylinder is communicated with one end of each pre-stored airflow channel, and the other end of each pre-stored airflow channel is communicated with the annular air channel; the water cooling jacket is connected with the upper inner cylinder through a flow guide pipe, a long-shaft submerged pump and a floating ball liquid level meter are arranged in the upper inner cylinder, the long-shaft submerged pump is controlled by the floating ball liquid level meter, and the water outlet end of the long-shaft submerged pump is connected with an external deaerator.
2. The dry quenching furnace with the water-cooling support frame and the annular pre-chamber according to claim 1, wherein the water-cooling support frame consists of a plurality of cross beams and 2 circles of concentric ring beams, and the cross beams pass through the concentric ring beams; the cross beam is of a double-layer box-shaped jacket structure, and the hollow part of the inner layer of the cross beam is used as a pre-stored airflow channel for guiding circulating gas in the lower inner cylinder into the annular air channel; the outer layer is a water-cooling jacket; one end of the water-cooling jacket, which is close to the furnace shell, is provided with a demineralized water inlet which is connected with a demineralized water outlet of a water supply pump of an external boiler, and one end of the water-cooling jacket, which is close to the lower inner cylinder, is connected with the upper inner cylinder through a flow guide pipe.
3. The dry quenching furnace with water-cooled support frame and annular pre-chamber according to claim 1 or 2, wherein the cross beam is made of metal material, and the inner surface and the outer surface of the cross beam are respectively provided with a refractory lining and a circulating gas flow regulating device.
4. The dry quenching furnace with the water-cooling support frame and the annular pre-chamber according to claim 1, wherein the concentric ring beam is made of a heat-resistant metal material, a middle cross beam is arranged at the top of the concentric ring beam and is fixedly connected with an inner ring of the concentric ring beam, and an inner ring top plate is built below the middle cross beam.
5. The method of operating a dry quenching furnace having a water-cooled support frame and an annular pre-chamber as claimed in claim 1, comprising:
1) The hot materials are filled into the annular pre-storing chamber from the material filling port by the distributor, distributed in an annular peak shape and downwards moved under the action of gravity; the radial segregation degree caused by natural accumulation of materials is small due to the limited width of the annular pre-chamber;
2) In the process of loading materials into the annular pre-storage chamber and moving downwards, the materials are blocked by a plurality of uniformly distributed cross beams on the water-cooling support frame, and the formed relative movement is equivalent to the stirring process, so that the segregation state of the generated materials is further destroyed, and the materials tend to be uniform;
3) After the materials flow out from the bottom of the annular pre-chamber, the materials are naturally piled up in the lower space of the cooling chamber to form a material pile with annular peaks; circulating gas fed from the bottom of the cooling chamber and hot materials in the cooling chamber fully exchange heat and then pass through the material layer to enter the upper space of the cooling chamber, wherein one part of circulating gas passes through the inclined material surface in the middle part to enter the lower inner cylinder, then enters the annular air duct through the pre-stored airflow channel and is converged with the other part of circulating gas which passes through the inclined material surface in the outer side and directly enters the annular air duct; the plurality of pre-stored air flow channels uniformly distributed along the circumferential direction of the dry quenching furnace enable the air flow in the lower inner cylinder and the annular air duct to be uniformly mixed, so that the stability of the temperature of the output air flow is more facilitated, and the converged circulating gas is discharged through a circulating gas outlet on one side of the annular air duct;
4) The water cooling jacket of each beam is internally communicated with desalted water after a boiler feed pump, the whole water cooling support frame is cooled, and the desalted water is pumped to the deaerator by the long shaft submerged pump after being heated, so that the strength of the water cooling support frame is ensured, and the low-pressure steam consumption of the deaerator is saved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811052370.4A CN108913169B (en) | 2018-09-10 | 2018-09-10 | Dry quenching furnace with water-cooling support frame and annular pre-chamber and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811052370.4A CN108913169B (en) | 2018-09-10 | 2018-09-10 | Dry quenching furnace with water-cooling support frame and annular pre-chamber and working method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108913169A CN108913169A (en) | 2018-11-30 |
| CN108913169B true CN108913169B (en) | 2024-01-30 |
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| CN201811052370.4A Active CN108913169B (en) | 2018-09-10 | 2018-09-10 | Dry quenching furnace with water-cooling support frame and annular pre-chamber and working method thereof |
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| CN109470056A (en) * | 2018-12-12 | 2019-03-15 | 中冶焦耐(大连)工程技术有限公司 | A kind of new shaft type furnace furnace structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201553702U (en) * | 2009-11-23 | 2010-08-18 | 攀钢集团冶金工程技术有限公司 | Water-cooled corbel of dry coke quenching furnace flue pipe |
| CN105087023A (en) * | 2015-08-17 | 2015-11-25 | 武汉钢铁(集团)公司 | Dry quenching furnace |
| CN106433700A (en) * | 2016-11-11 | 2017-02-22 | 中冶焦耐(大连)工程技术有限公司 | Coke dry quenching dust removal system and process capable of efficiently recovering heat energy |
| CN208980646U (en) * | 2018-09-10 | 2019-06-14 | 中冶焦耐(大连)工程技术有限公司 | The coke dry quenching furnace of room is prestored with water cooling support frame and annular |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201553702U (en) * | 2009-11-23 | 2010-08-18 | 攀钢集团冶金工程技术有限公司 | Water-cooled corbel of dry coke quenching furnace flue pipe |
| CN105087023A (en) * | 2015-08-17 | 2015-11-25 | 武汉钢铁(集团)公司 | Dry quenching furnace |
| CN106433700A (en) * | 2016-11-11 | 2017-02-22 | 中冶焦耐(大连)工程技术有限公司 | Coke dry quenching dust removal system and process capable of efficiently recovering heat energy |
| CN208980646U (en) * | 2018-09-10 | 2019-06-14 | 中冶焦耐(大连)工程技术有限公司 | The coke dry quenching furnace of room is prestored with water cooling support frame and annular |
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| CN108913169A (en) | 2018-11-30 |
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