CN108865191B - Dry quenching furnace with inclined pre-stored airflow channel and annular pre-stored chamber and working method - Google Patents
Dry quenching furnace with inclined pre-stored airflow channel and annular pre-stored chamber and working method Download PDFInfo
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- 238000010791 quenching Methods 0.000 title claims abstract description 51
- 230000000171 quenching effect Effects 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 99
- 238000001816 cooling Methods 0.000 claims abstract description 59
- 238000005204 segregation Methods 0.000 claims abstract description 13
- 238000005192 partition Methods 0.000 claims abstract description 9
- 238000003860 storage Methods 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 57
- 238000009825 accumulation Methods 0.000 claims description 7
- 239000011449 brick Substances 0.000 claims description 6
- 239000000112 cooling gas Substances 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 6
- 239000007769 metal material Substances 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000000630 rising 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
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000004939 coking Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000012423 maintenance Methods 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
- 239000000203 mixture Substances 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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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- Coke Industry (AREA)
Abstract
The invention relates to a dry quenching furnace with an inclined pre-stored airflow channel and an annular pre-stored chamber and a working method thereof, wherein the pre-stored chamber is an annular pre-stored chamber formed by an upper inner annular wall, an upper outer annular wall, a lower inner annular wall and a lower 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 inclined pre-stored air flow 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 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 an inclined pre-stored airflow channel and an annular pre-stored 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 an inclined pre-stored airflow channel and an annular pre-stored 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-stored 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 with the inclined pre-stored airflow channel and the annular pre-stored chamber comprises a pre-stored chamber and a 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, an upper hanging bracket is arranged above the top plate, and an upper inner annular wall and an upper outer annular wall are built on the upper hanging bracket; a lower inner annular wall and a lower outer annular wall are arranged below the upper 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 inclined pre-stored air flow 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 upper hanging frame consists of a plurality of hollow beams arranged along the circumference of the dry quenching furnace, the middle part of the upper hanging frame is connected with a framework above the dry quenching furnace through a suspension mechanism, the outer ends of the hollow beams respectively extend out of the furnace shell and are provided with cooling gas inlets, and one end of the center of the hollow Liang Kaojin dry quenching furnace is provided with a cooling gas outlet which is communicated with an upper central cylinder formed inside the upper inner annular wall.
The upper hanging bracket is made of metal materials, and penetrates through part of the outer lining wear-resistant and heat-insulating materials of the annular pre-storage chamber formed by the upper inner annular wall and the upper outer annular wall, and is naturally cooled by air.
The bottom of the upper 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 inclined pre-stored airflow channel is made of heat-resistant and wear-resistant materials, and the quantity and the size of the inclined pre-stored airflow channel are determined according to the circulating gas quantity required to be led out by the lower central cylinder; the included angle between the inclined pre-stored airflow channel and the horizontal plane is larger than the natural stacking angle of the materials; the inclined pre-stored airflow channel is internally provided with a circulating gas flow regulating device.
The working method of the dry quenching furnace with the inclined pre-stored airflow channel and the annular pre-stored 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 upper hanging frame and the inclined pre-storage airflow channels which are uniformly distributed along the circumferential direction 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) After the materials flow out from the bottom of the annular pre-chamber, the materials are naturally piled up in the cooling chamber to form a material pile with annular peaks; the 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 one 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 duct through the inclined pre-stored gas flow channel to be converged with the other part of the circulating gas entering the annular air duct from the inclined material surface at the outer side of the annular peak, the uniformly distributed inclined pre-stored gas flow channels enable the gas flows in the lower central cylinder and the annular air duct to be uniformly mixed, the stability of the temperature of the output gas flow is more facilitated, and finally, the circulating gas is discharged through a circulating gas outlet at one side of the annular air duct;
3) The inclined pre-stored airflow channel can avoid unsmooth airflow and rising of system resistance caused by accumulation of dust particles of materials in the channel; because of the heat conduction of the furnace wall and the furnace shell of the dry quenching furnace, the air temperature in the upper central cylinder is higher, thereby generating suction force, the air continuously flows in from the cooling air inlet at the outer end of the hollow beam of the upper hanging bracket, flows out from the cooling air outlet, and realizes the cooling of the upper hanging bracket by means of natural convection of the air.
Compared with the prior art, the invention has the beneficial effects that:
1) After the annular pre-chamber is adopted, the segregation degree of the materials in a narrower space is greatly reduced after the materials are uniformly filled in the annular pre-chamber along the circumferential direction, the materials are blocked by the uniformly-distributed upper hanging frame and the inclined pre-stored airflow channel in sequence in the process of filling the annular pre-chamber and moving downwards, and the generated relative motion 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 total area of the inner and outer material surfaces of the annular peak-shaped material pile formed at the upper part of the cooling chamber is increased, and the inner circulating gas can be rapidly guided out to an external annular air channel through the inclined 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) The annular pre-chamber adopted by the invention is equivalent to arranging a material seal with enough height between the upper space of the cooling chamber and the material loading port at the top of the pre-chamber, so that a gas circulation system and the material loading port 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 central cylinder and enters the annular air duct after passing through the inclined pre-stored air flow channels, and the uniformly distributed inclined pre-stored air flow channels enable the air flows of the 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) When the circulating gas in the lower central cylinder passes through the inclined pre-stored gas flow channel, the channel is inclined, so that the unsmooth gas flow and the rise of system resistance caused by the accumulation of dust particles in the channel are avoided;
6) The main bodies of the annular pre-chambers are fixed through the upper hanging frame and the hanging mechanism, so that the load on the brickwork of the lower cooling chamber 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.
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 having inclined pre-charge air flow passages and annular pre-chambers 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, annular air duct 7, partition wall 8, guide wall 9, cage frame 10, upper 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, cooling air inlet 20, cooling air outlet 21, upper central tube
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 inclined pre-stored airflow channel and the annular pre-stored chamber comprises a pre-stored chamber and a cooling chamber which are communicated up and down; the pre-storing chamber is an annular pre-storing chamber 3 which is 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, an upper 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 upper hanging bracket 10; a lower inner annular wall 11 and a lower outer annular wall 12 are arranged below the upper 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 11 and the top plate 16 above the lower inner annular wall form a lower central cylinder 4, and a plurality of inclined 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 upper hanging bracket 10 consists of a plurality of hollow beams arranged along the circumference of the dry quenching furnace, the middle part of the upper hanging bracket 10 is connected with a framework above the dry quenching furnace through a suspension mechanism 17, the outer ends of the hollow beams respectively extend out of the furnace shell and are provided with cooling gas inlets 19, one end of the center of the hollow Liang Kaojin dry quenching furnace is provided with a cooling gas outlet 20 which is communicated with an upper central cylinder 21 formed inside the upper inner annular wall 1.
The upper hanger 10 is made of metal material, and penetrates through the part of the annular pre-chamber 3 consisting of the upper inner annular wall 1 and the upper outer annular wall 2 to be externally lined with wear-resistant and heat-insulating material, and is naturally cooled by air.
The bottom of the upper 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 inclined pre-stored airflow channel 5 is made of heat-resistant and wear-resistant materials, and the number and the size of the inclined pre-stored airflow channel are determined according to the circulating gas quantity required to be led out by the lower central cylinder 4; the included angle between the inclined pre-stored airflow channel 5 and the horizontal plane is larger than the natural stacking angle of the materials; the inclined pre-stored gas flow passage 5 is internally provided with a circulating gas flow regulating device 18.
The working method of the dry quenching furnace with the inclined pre-stored airflow channel and the annular pre-stored 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 upper hanging frame 10 and the inclined pre-stored airflow channels 5 which are uniformly distributed along the circumferential direction 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) After the materials flow out from the bottom of the annular pre-chamber 3, the materials are naturally piled up in a cooling chamber to form a material pile with annular peaks; the 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 a 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 inclined pre-stored gas 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 inclined pre-stored gas flow channels 5 enable the gas flows in the lower central cylinder 4 and the annular air duct 6 to be uniformly mixed, the stability of the temperature of the output gas 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 inclined pre-stored airflow channel 5 can avoid unsmooth airflow and rising of system resistance caused by accumulation of dust particles of materials in the channel; due to the heat conduction of the furnace wall and the furnace shell of the dry quenching furnace, the air temperature in the upper central cylinder 21 is higher, so that suction force is generated, the air continuously flows in from the cooling air inlet 19 at the outer end of the hollow beam of the upper hanging bracket 10, flows out from the cooling air outlet 20, and the cooling of the upper hanging bracket 10 is realized by natural convection of the air.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (6)
1. The dry quenching furnace with the inclined pre-stored airflow channel and the annular pre-stored chamber comprises a pre-stored chamber and a 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, an upper hanging bracket is arranged above the top plate, and an upper inner annular wall and an upper outer annular wall are built on the upper hanging bracket; a lower inner annular wall and a lower outer annular wall are arranged below the upper 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 inclined pre-stored air flow 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 upper hanging frame consists of a plurality of hollow beams arranged along the circumference of the dry quenching furnace, the middle part of the upper hanging frame is connected with a framework above the dry quenching furnace through a suspension mechanism, the outer ends of the hollow beams respectively extend out of the furnace shell and are provided with cooling gas inlets, and one end of the center of the hollow Liang Kaojin dry quenching furnace is provided with a cooling gas outlet which is communicated with an upper central cylinder formed inside the upper inner annular wall.
2. The dry quenching furnace having an inclined pre-charge air flow passage and an annular pre-charge chamber as set forth in claim 1 wherein said upper hanger is made of a metal material and is naturally cooled with air through a portion of the outer lining of the annular pre-charge chamber comprised of an upper inner annular wall and an upper outer annular wall with wear resistant and insulating material.
3. The dry quenching furnace with inclined pre-stored air flow channel and annular pre-stored chamber according to claim 1 or 2, wherein the bottom of the upper 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.
4. The dry quenching furnace with the inclined pre-stored air flow channel and the annular pre-stored chamber according to claim 3, wherein the cage framework is composed 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.
5. The dry quenching furnace having an inclined pre-charge gas flow passage and an annular pre-charge chamber according to claim 1, wherein the inclined pre-charge gas flow passage is formed of a heat and wear resistant material, the number and size of which are determined according to the amount of circulating gas to be conducted out of the lower central cylinder; the included angle between the inclined pre-stored airflow channel and the horizontal plane is larger than the natural stacking angle of the materials; the inclined pre-stored airflow channel is internally provided with a circulating gas flow regulating device.
6. A method of operating a dry quenching furnace having an inclined pre-charge air flow path and an annular pre-charge 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 upper hanging frame and the inclined pre-storage airflow channels which are uniformly distributed along the circumferential direction 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) After the materials flow out from the bottom of the annular pre-chamber, the materials are naturally piled up in the cooling chamber to form a material pile with annular peaks; the 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 one 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 duct through the inclined pre-stored gas flow channel to be converged with the other part of the circulating gas entering the annular air duct from the inclined material surface at the outer side of the annular peak, the uniformly distributed inclined pre-stored gas flow channels enable the gas flows in the lower central cylinder and the annular air duct to be uniformly mixed, the stability of the temperature of the output gas flow is more facilitated, and finally, the circulating gas is discharged through a circulating gas outlet at one side of the annular air duct;
3) The inclined pre-stored airflow channel can avoid unsmooth airflow and rising of system resistance caused by accumulation of dust particles of materials in the channel; because of the heat conduction of the furnace wall and the furnace shell of the dry quenching furnace, the air temperature in the upper central cylinder is higher, thereby generating suction force, the air continuously flows in from the cooling air inlet at the outer end of the hollow beam of the upper hanging bracket, flows out from the cooling air outlet, and realizes the cooling of the upper hanging bracket by means of natural convection of the air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811052952.2A CN108865191B (en) | 2018-09-10 | 2018-09-10 | Dry quenching furnace with inclined pre-stored airflow channel and annular pre-stored chamber and working method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811052952.2A CN108865191B (en) | 2018-09-10 | 2018-09-10 | Dry quenching furnace with inclined pre-stored airflow channel and annular pre-stored chamber and working method |
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| Publication Number | Publication Date |
|---|---|
| CN108865191A CN108865191A (en) | 2018-11-23 |
| CN108865191B true CN108865191B (en) | 2024-01-30 |
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| CN201811052952.2A Active CN108865191B (en) | 2018-09-10 | 2018-09-10 | Dry quenching furnace with inclined pre-stored airflow channel and annular pre-stored chamber and working method |
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| CN (1) | CN108865191B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201395572Y (en) * | 2009-05-12 | 2010-02-03 | 攀枝花新钢钒股份有限公司 | Chute bracket of CDQ furnace |
| CN201560174U (en) * | 2009-11-16 | 2010-08-25 | 中冶焦耐(大连)工程技术有限公司 | Dry quenching furnace with novel structure |
| CN204737917U (en) * | 2015-01-16 | 2015-11-04 | 方登豹 | It constructs to put out furnace accretion futilely |
| CN106905988A (en) * | 2017-04-01 | 2017-06-30 | 中冶焦耐(大连)工程技术有限公司 | A kind of coke dry quenching furnace with new exhaust structure |
| CN208980642U (en) * | 2018-09-10 | 2019-06-14 | 中冶焦耐(大连)工程技术有限公司 | Airflow channel is prestored with inclination and annular prestores the coke dry quenching furnace of room |
-
2018
- 2018-09-10 CN CN201811052952.2A patent/CN108865191B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201395572Y (en) * | 2009-05-12 | 2010-02-03 | 攀枝花新钢钒股份有限公司 | Chute bracket of CDQ furnace |
| CN201560174U (en) * | 2009-11-16 | 2010-08-25 | 中冶焦耐(大连)工程技术有限公司 | Dry quenching furnace with novel structure |
| CN204737917U (en) * | 2015-01-16 | 2015-11-04 | 方登豹 | It constructs to put out furnace accretion futilely |
| CN106905988A (en) * | 2017-04-01 | 2017-06-30 | 中冶焦耐(大连)工程技术有限公司 | A kind of coke dry quenching furnace with new exhaust structure |
| CN208980642U (en) * | 2018-09-10 | 2019-06-14 | 中冶焦耐(大连)工程技术有限公司 | Airflow channel is prestored with inclination and annular prestores the coke dry quenching furnace of room |
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| CN108865191A (en) | 2018-11-23 |
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