CN108949201B - Dry quenching furnace with water-cooling hanging frame and annular pre-chamber and working method thereof - Google Patents
Dry quenching furnace with water-cooling hanging frame and annular pre-chamber and working method thereof Download PDFInfo
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- 238000001816 cooling Methods 0.000 title claims abstract description 93
- 238000010791 quenching Methods 0.000 title claims abstract description 50
- 230000000171 quenching effect Effects 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 93
- 239000000463 material Substances 0.000 claims abstract description 88
- 238000005204 segregation Methods 0.000 claims abstract description 13
- 238000005192 partition Methods 0.000 claims abstract description 8
- 239000011449 brick Substances 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 6
- 239000007769 metal material Substances 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 238000009825 accumulation Methods 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 3
- 238000009826 distribution Methods 0.000 abstract description 2
- 238000003860 storage Methods 0.000 abstract description 2
- 239000000571 coke Substances 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 230000000149 penetrating effect Effects 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
- 230000001105 regulatory effect Effects 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
- 238000002309 gasification Methods 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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Abstract
The invention relates to a dry quenching furnace with a water-cooling hanging bracket and an annular pre-chamber and a working method thereof, wherein the pre-chamber of the dry quenching furnace is an annular pre-chamber which is formed by an upper inner annular wall, an upper outer annular wall, a lower inner annular wall and a lower outer annular wall; one side of the annular air duct is provided with a partition wall, and the other side of the annular air duct is provided with a circulating gas outlet; a plurality of horizontal pre-stored airflow channels penetrate through the lower inner annular wall and the lower outer annular wall to communicate the central cylinder with the annular air duct; the water-cooling hanging bracket consists of a plurality of hollow beams, the outer ends of the hollow beams are communicated with the outer ring water tank through demineralized water inlets, and the other ends of the hollow beams are communicated with the inner ring water tank through demineralized water outlets; a ball float valve is arranged in the outer ring water tank, a long-shaft submerged pump is arranged in the inner ring water tank, and a water outlet of the long-shaft submerged pump is connected with an external deaerator through a pipeline. 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 hanger 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 hanging bracket 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 large 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 with the water-cooling hanging bracket and the annular pre-chamber comprises the pre-chamber and the cooling chamber which are communicated up and down; the pre-storing chamber is an annular pre-storing chamber which is formed by an upper inner annular wall, an upper outer annular wall, a lower inner annular wall and a lower outer annular wall; a top plate is arranged at the top of the outer wall of the cooling chamber, a water-cooling hanging bracket is arranged above the top plate, and an upper inner annular wall and an upper outer annular wall are built on the water-cooling hanging bracket; a lower inner annular wall and a lower outer annular wall are arranged below the water-cooling hanging bracket, and an annular channel formed by the lower inner annular wall and the lower outer annular wall is aligned and communicated with an annular channel formed by the upper inner annular wall and the upper outer annular wall; a cooling chamber is arranged below the annular pre-storing chamber; the cooling chamber outer wall, the top plate, the lower outer annular wall and the materials in the cooling chamber enclose an annular air channel, a partition wall is arranged between the cooling chamber outer wall and the lower outer annular wall at one side of the annular air channel, and a diversion wall and a circulating gas outlet are arranged at one side of the annular air channel opposite to the partition wall; the lower inner annular wall and the top plate above the lower inner annular wall form a lower central cylinder, and a plurality of horizontal pre-stored airflow channels penetrate through the lower inner annular wall and the lower outer annular wall along the circumferential direction of the dry quenching furnace to communicate the lower central cylinder with the annular air duct; the water-cooling hanging bracket consists of a plurality of hollow beams arranged along the circumference of the dry quenching furnace, and the middle part of the water-cooling hanging bracket is connected with a framework above the dry quenching furnace through a suspension mechanism; an outer ring water tank is arranged at the bottom of the outer side of the upper outer ring wall, an inner ring water tank is arranged at the bottom of the inner side of the upper inner ring wall, the outer ends of the hollow beams extend out of the furnace shell respectively and are communicated with the outer ring water tank through demineralized water inlets, and one end of the center of the hollow Liang Kaojin dry quenching furnace is provided with a demineralized water outlet which is communicated with the inner ring water tank respectively; a ball float valve is arranged in the outer ring water tank, a long-shaft submerged pump is arranged in the inner ring water tank, and a water outlet of the long-shaft submerged pump is connected with an external deaerator through a pipeline.
The water-cooling hanging bracket is made of metal materials, and part of the water-cooling hanging bracket penetrating through the annular pre-chamber between the upper inner annular wall and the upper outer annular wall is externally lined with wear-resistant and heat-insulating materials.
The bottom of the water-cooling hanging bracket is provided with 2 annular hanging cage frameworks, the lower inner annular wall and the lower outer annular wall are respectively built around the corresponding hanging cage frameworks and enclose the hanging cage frameworks, and the hanging cage frameworks are made of high-temperature-resistant metal materials.
The lifting cage framework consists of a plurality of vertical hanging rods distributed along the circumferential direction of the dry quenching furnace and a plurality of layers of brick supporting plates vertically arranged on the vertical hanging rods, and the heights of the brick supporting plates are adjustable.
The horizontal pre-stored airflow channel is made of heat-resistant and wear-resistant materials, and a circulating gas flow regulating device is arranged in the horizontal pre-stored airflow channel.
The outer ring water tank and the inner ring water tank are positioned above the top plate, and a plurality of exhaust ports are formed in the tops of the water-cooling hanging brackets penetrating through the outer ring water tank and the inner ring water tank.
The working method of the dry quenching furnace with the water-cooling hanging bracket and the annular pre-chamber comprises the following steps:
1) The hot materials are loaded from a material loading port at the top of the annular pre-chamber by a distributor, are accumulated in an annular peak shape in the annular pre-chamber, and move downwards 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; in the process of loading materials into the annular pre-chamber and downwards moving, the materials are blocked by the water-cooling hanging bracket and the horizontal pre-storing airflow channel in sequence, and the generated relative movement is equivalent to the stirring process, so that the generated segregation state of the cloth can be further destroyed, and the cloth tends to be uniform;
2) After the material flows out from the bottom of the annular pre-chamber, the material pile with an annular peak is formed in the cooling chamber, circulating gas fed from the bottom of the cooling chamber and the material fully exchange heat and then pass through the material layer to enter the upper space of the cooling chamber, wherein part of the circulating gas passes through the inclined material surface at the inner side of the annular peak to enter the lower central cylinder, then enters the annular air channel through the horizontal pre-stored air flow channel and is converged with the other part of the circulating gas entering the annular air channel from the inclined material surface at the outer side of the annular peak, the uniformly distributed horizontal pre-stored air flow channels uniformly mix the air flows in the lower central cylinder and the annular air channel, the stability of the temperature of the output air flow is more facilitated, and finally, the circulating gas is discharged through a circulating gas outlet at one side of the annular air channel;
3) The desalted water pumped by the boiler feed water pump enters an outer ring water tank, and automatic water supplementing is realized and the set liquid level is maintained through the control of a float valve; the desalted water enters from a desalted water inlet arranged on the side surface of the hollow beam and flows to one side of a desalted water outlet, is heated in the flowing process, and is pumped to an external deaerator by a long-shaft submerged pump arranged in an inner ring water tank; and exhaust ports are arranged in the top areas of the water cooling hanging brackets corresponding to the inner ring water tank and the outer ring water tank and are used for guiding out vapor generated after the desalted water is gasified.
Compared with the prior art, the invention has the beneficial effects that:
1) The annular pre-chamber is adopted, materials are uniformly filled in the annular pre-chamber along the circumferential direction, the segregation degree of the materials in a narrower space is greatly reduced, the materials are sequentially blocked by the water-cooling hanging bracket hollow beams uniformly distributed along the circumferential direction and the horizontal pre-stored airflow channels in the process of filling the annular pre-chamber and moving downwards, and the generated relative movement is similar to the stirring process, so that the segregation state of the generated materials can be further destroyed, and the materials tend to be uniform;
2) Under the constraint of the annular pre-storing chamber, the material forms an annular material peak in the upper space of the cooling chamber, the total area of the inner material surface and the outer material surface is increased, and the inner circulating gas can be rapidly guided out to an external annular air duct through a horizontal pre-storing airflow 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 loading port at the top of the annular pre-chamber, so that a gas circulation system is effectively isolated from the material loading port, 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 central cylinder and enters the annular air duct after passing through the horizontal pre-stored air flow channels, and the uniformly distributed horizontal pre-stored air flow channels enable the air flows of the lower central 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 fixed through the water-cooling hanging frame and the suspension mechanism, so that the load on the lower cooling chamber masonry is obviously reduced, and meanwhile, the conventional bracket structure is canceled, so that 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 water-cooling hanging bracket adopts desalted water for cooling, thereby not only ensuring the structural strength of the water-cooling hanging bracket, but also recovering the heat of the materials in the dry quenching furnace, and simultaneously saving the low-pressure steam consumption of the deaerator.
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 water-cooled hanger and 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 central tube 5, horizontal pre-stored air flow channel 6, annular air duct 7, partition wall 8, guide wall 9, cage frame 10, water cooled hanger 11, lower inner annular wall 12, lower outer annular wall 13, cooling chamber outer wall 14, material loading inlet 15, circulating gas outlet 16, top plate 17, suspension mechanism 18, circulating gas flow regulator 19, outer annular water tank 20, inner annular water tank 21, ball float valve 22, desalinization water inlet 23, air outlet 24, long axis submerged pump 25, desalinization water outlet
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 hanging bracket and the annular pre-chamber comprises the pre-chamber and the cooling chamber which are communicated up and down; the pre-storing chamber is an annular pre-storing chamber formed by an upper inner annular wall 1, an upper outer annular wall 2, a lower inner annular wall 11 and a lower outer annular wall 12; a top plate 16 is arranged at the top of the outer wall 13 of the cooling chamber, a water cooling hanging bracket 10 is arranged above the top plate 16, and an upper inner annular wall 1 and an upper outer annular wall 2 are built on the water cooling hanging bracket 10; a lower inner annular wall 11 and a lower outer annular wall 12 are arranged below the water cooling hanging bracket 10, and an annular channel formed by the lower inner annular wall 11 and the lower outer annular wall 12 is aligned and communicated with an annular channel formed by the upper inner annular wall 1 and the upper outer annular wall 2; a cooling chamber is arranged below the annular pre-storing chamber 3; the cooling chamber outer wall 13, the top plate 16, the lower outer annular wall 12 and the materials in the cooling chamber enclose an annular air duct 6, a partition wall 7 is arranged between the cooling chamber outer wall 13 and the lower outer annular wall 12 at one side of the annular air duct 6, and a guide wall 8 and a circulating gas outlet 15 are arranged at one side of the annular air duct 6 opposite to the partition wall 7; the lower inner annular wall 12 and the top plate 16 above the lower inner annular wall form a lower central cylinder 4, and a plurality of horizontal pre-stored air flow channels 5 penetrate through the lower inner annular wall 11 and the lower outer annular wall 12 along the circumferential direction of the dry quenching furnace to communicate the lower central cylinder 4 with the annular air duct 6; the water-cooling hanging bracket 10 consists of a plurality of hollow beams arranged along the circumference of the dry quenching furnace, and the middle part of the water-cooling hanging bracket 10 is connected with a framework above the dry quenching furnace through a suspension mechanism 17; the bottom of the outer side of the upper outer ring wall 2 is provided with an outer ring water tank 19, the bottom of the inner side of the upper inner ring wall 1 is provided with an inner ring water tank 20, the outer ends of the hollow beams respectively extend out of the furnace shell and are communicated with the outer ring water tank 19 through a demineralized water inlet 22, and one end of the center of the hollow Liang Kaojin dry quenching furnace is respectively provided with a demineralized water outlet and communicated with the inner ring water tank 20; the outer ring water tank 19 is internally provided with a ball float valve 21, the inner ring water tank 20 is internally provided with a long shaft submerged pump 24, and the water outlet of the long shaft submerged pump 24 is connected with an external deaerator through a pipeline.
The water-cooling hanger 10 is made of metal material, and penetrates through the part of the annular pre-chamber 3 between the upper inner annular wall 1 and the upper outer annular wall 2 to be externally lined with wear-resistant and heat-insulating materials.
The bottom of the water-cooling hanging bracket 10 is provided with 2 annular hanging cage frameworks 9, a lower inner annular wall 11 and a lower outer annular wall 12 are respectively built around the corresponding hanging cage frameworks 9 and enclose the hanging cage frameworks 9, and the hanging cage frameworks 9 are made of high-temperature-resistant metal materials.
The cage framework 9 consists of a plurality of vertical hanging rods distributed along the circumferential direction of the dry quenching furnace and a plurality of layers of brick supporting plates vertically arranged on the vertical hanging rods, and the heights of the brick supporting plates are adjustable.
The horizontal pre-stored airflow channel 5 is made of heat-resistant and wear-resistant materials, and a circulating gas flow regulating device 18 is arranged in the horizontal pre-stored airflow channel 5.
The outer ring water tank 19 and the inner ring water tank 20 are positioned above the top plate 16, and a plurality of exhaust ports 23 are formed in the top of the water cooling hanging bracket 10 penetrating through the areas of the outer ring water tank 19 and the inner ring water tank 20.
The working method of the dry quenching furnace with the water-cooling hanging bracket and the annular pre-chamber comprises the following steps:
1) The hot materials are loaded from a material loading port 14 at the top of the annular pre-chamber 3 by a distributor, are accumulated in an annular peak shape in the annular pre-chamber 3, 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; in the process of loading the materials into the annular pre-chamber 3 and moving downwards, the materials are blocked by the water-cooling hanging bracket 10 and the horizontal pre-storing airflow channel 5 in sequence, and the generated relative movement is equivalent to the stirring process, so that the generated segregation state of the materials can be further destroyed, and the materials tend to be uniform;
2) The material flows out from the bottom of the annular pre-chamber 3, and then naturally piles in the cooling chamber to form a material pile with an annular peak, circulating gas fed from the bottom of the cooling chamber fully exchanges heat with the material and then passes through the material layer to enter the upper space of the cooling chamber, wherein part of circulating gas passes through the inclined material surface at the inner side of the annular peak to enter the lower central cylinder 4, then enters the annular air duct 6 through the horizontal pre-stored air flow channel 5 and is converged with the other part of circulating gas entering the annular air duct 6 from the inclined material surface at the outer side of the annular peak, the uniformly distributed horizontal pre-stored air flow channels 5 uniformly mix the air flows in the lower central cylinder 4 and the annular air duct 6, the stability of the temperature of the output air flow is more facilitated, and finally, the circulating gas is discharged through the circulating gas outlet 15 positioned at one side of the annular air duct 6;
3) The desalted water pumped by the boiler feed water pump enters an outer ring water tank 19, and automatic water supplementing is realized and the set liquid level height is maintained under the control of a float valve 21; the desalted water enters from a desalted water inlet 22 arranged on the side surface of the hollow beam and flows to one side of a desalted water outlet, is heated in the flowing process, and is pumped out by a long-shaft submerged pump 24 positioned in the inner ring water tank 20 to be sent to an external deaerator; the top areas of the water cooling hanging frame 10 corresponding to the inner ring water tank 20 and the outer ring water tank 19 are respectively provided with an air outlet 23 for guiding out the vapor after the gasification of the desalted water.
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 (7)
1. The dry quenching furnace with the water-cooling hanging bracket and the annular pre-chamber comprises the pre-chamber and the cooling chamber which are communicated up and down; the pre-storing chamber is an annular pre-storing chamber which is formed by an upper inner annular wall, an upper outer annular wall, a lower inner annular wall and a lower outer annular wall; a top plate is arranged at the top of the outer wall of the cooling chamber, a water-cooling hanging bracket is arranged above the top plate, and an upper inner annular wall and an upper outer annular wall are built on the water-cooling hanging bracket; a lower inner annular wall and a lower outer annular wall are arranged below the water-cooling hanging bracket, and an annular channel formed by the lower inner annular wall and the lower outer annular wall is aligned and communicated with an annular channel formed by the upper inner annular wall and the upper outer annular wall; a cooling chamber is arranged below the annular pre-storing chamber; the cooling chamber outer wall, the top plate, the lower outer annular wall and the materials in the cooling chamber enclose an annular air channel, a partition wall is arranged between the cooling chamber outer wall and the lower outer annular wall at one side of the annular air channel, and a diversion wall and a circulating gas outlet are arranged at one side of the annular air channel opposite to the partition wall; the lower inner annular wall and the top plate above the lower inner annular wall form a lower central cylinder, and a plurality of horizontal pre-stored airflow channels penetrate through the lower inner annular wall and the lower outer annular wall along the circumferential direction of the dry quenching furnace to communicate the lower central cylinder with the annular air duct; the water-cooling hanging bracket consists of a plurality of hollow beams arranged along the circumference of the dry quenching furnace, and the middle part of the water-cooling hanging bracket is connected with a framework above the dry quenching furnace through a suspension mechanism; an outer ring water tank is arranged at the bottom of the outer side of the upper outer ring wall, an inner ring water tank is arranged at the bottom of the inner side of the upper inner ring wall, the outer ends of the hollow beams extend out of the furnace shell respectively and are communicated with the outer ring water tank through demineralized water inlets, and one end of the center of the hollow Liang Kaojin dry quenching furnace is provided with a demineralized water outlet which is communicated with the inner ring water tank respectively; a ball float valve is arranged in the outer ring water tank, a long-shaft submerged pump is arranged in the inner ring water tank, and a water outlet of the long-shaft submerged pump is connected with an external deaerator through a pipeline.
2. The dry quenching furnace having a water-cooled hanger and annular pre-chamber as claimed in claim 1, wherein the water-cooled hanger is made of a metal material and partially lined with a wear-resistant and heat-insulating material through the annular pre-chamber between the upper inner annular wall and the upper outer annular wall.
3. The dry quenching furnace with a water-cooling hanger and an annular pre-chamber according to claim 1 or 2, wherein 2 annular cage frameworks are arranged at the bottom of the water-cooling hanger, and a lower inner annular wall and a lower outer annular wall are respectively built around the corresponding cage frameworks and enclose the cage frameworks, and the cage frameworks are made of high-temperature-resistant metal materials.
4. The dry quenching furnace with the water-cooling hanging bracket and the annular pre-chamber according to claim 3, wherein the hanging cage framework is composed of a plurality of vertical hanging rods distributed along the circumference of the dry quenching furnace and a plurality of layers of brick supporting plates vertically arranged on the vertical hanging rods, and the heights of the brick supporting plates are adjustable.
5. The dry quenching furnace with a water-cooled hanger and annular pre-chamber as claimed in claim 1, wherein the horizontal pre-stored gas flow channel is made of heat and wear resistant material, and a circulating gas flow regulator is arranged in the horizontal pre-stored gas flow channel.
6. The dry quenching furnace with the water-cooling hanging bracket and the annular pre-chamber as set forth in claim 1, wherein the outer ring water tank and the inner ring water tank are positioned above the top plate, and a plurality of exhaust ports are formed at the top of the water-cooling hanging bracket passing through the areas of the outer ring water tank and the inner ring water tank.
7. The method of operating a dry quenching furnace having a water-cooled hanger and annular pre-chamber as claimed in claim 1, comprising:
1) The hot materials are loaded from a material loading port at the top of the annular pre-chamber by a distributor, are accumulated in an annular peak shape in the annular pre-chamber, and move downwards 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; in the process of loading materials into the annular pre-chamber and downwards moving, the materials are blocked by the water-cooling hanging bracket and the horizontal pre-storing airflow channel in sequence, and the generated relative movement is equivalent to the stirring process, so that the generated segregation state of the cloth can be further destroyed, and the cloth tends to be uniform;
2) After the material flows out from the bottom of the annular pre-chamber, the material pile with an annular peak is formed in the cooling chamber, circulating gas fed from the bottom of the cooling chamber and the material fully exchange heat and then pass through the material layer to enter the upper space of the cooling chamber, wherein part of the circulating gas passes through the inclined material surface at the inner side of the annular peak to enter the lower central cylinder, then enters the annular air channel through the horizontal pre-stored air flow channel and is converged with the other part of the circulating gas entering the annular air channel from the inclined material surface at the outer side of the annular peak, the uniformly distributed horizontal pre-stored air flow channels uniformly mix the air flows in the lower central cylinder and the annular air channel, the stability of the temperature of the output air flow is more facilitated, and finally, the circulating gas is discharged through a circulating gas outlet at one side of the annular air channel;
3) The desalted water pumped by the boiler feed water pump enters an outer ring water tank, and automatic water supplementing is realized and the set liquid level is maintained through the control of a float valve; the desalted water enters from a desalted water inlet arranged on the side surface of the hollow beam and flows to one side of a desalted water outlet, is heated in the flowing process, and is pumped to an external deaerator by a long-shaft submerged pump arranged in an inner ring water tank; and exhaust ports are arranged in the top areas of the water cooling hanging brackets corresponding to the inner ring water tank and the outer ring water tank and are used for guiding out vapor generated after the desalted water is gasified.
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Citations (5)
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| CN200981856Y (en) * | 2006-12-19 | 2007-11-28 | 惠建明 | Dry coke quenching boiler |
| CN101709222A (en) * | 2009-11-16 | 2010-05-19 | 中冶焦耐(大连)工程技术有限公司 | Dry quenching furnace shell with novel structure |
| CN201883068U (en) * | 2010-12-17 | 2011-06-29 | 攀钢集团钢铁钒钛股份有限公司 | Coke-dry-quenching furnace |
| RU2468063C1 (en) * | 2011-06-23 | 2012-11-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Кузбасский государственный технический университет имени Т.Ф. Горбачева" (КузГТУ) | Coal char discharge device |
| CN209161944U (en) * | 2018-09-10 | 2019-07-26 | 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 hanger and annular |
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2018
- 2018-09-10 CN CN201811052309.XA patent/CN108949201B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200981856Y (en) * | 2006-12-19 | 2007-11-28 | 惠建明 | Dry coke quenching boiler |
| CN101709222A (en) * | 2009-11-16 | 2010-05-19 | 中冶焦耐(大连)工程技术有限公司 | Dry quenching furnace shell with novel structure |
| CN201883068U (en) * | 2010-12-17 | 2011-06-29 | 攀钢集团钢铁钒钛股份有限公司 | Coke-dry-quenching furnace |
| RU2468063C1 (en) * | 2011-06-23 | 2012-11-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Кузбасский государственный технический университет имени Т.Ф. Горбачева" (КузГТУ) | Coal char discharge device |
| CN209161944U (en) * | 2018-09-10 | 2019-07-26 | 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 hanger and annular |
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