CN216738199U - Primary dust removal and cooling device for dry quenching - Google Patents
Primary dust removal and cooling device for dry quenching Download PDFInfo
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- CN216738199U CN216738199U CN202122832248.2U CN202122832248U CN216738199U CN 216738199 U CN216738199 U CN 216738199U CN 202122832248 U CN202122832248 U CN 202122832248U CN 216738199 U CN216738199 U CN 216738199U
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Abstract
The application discloses dust removal and cooling device are once gone out to dry coke quenching belongs to quenching technical field. The device comprises a dust remover and a cooling sleeve which are communicated through a chute pipe body; the dust remover comprises a dust remover inlet, a dust remover outlet, a bulge part, an inclined retaining wall and a vertical retaining wall, wherein the inclined retaining wall is positioned at the lower part of the dust remover inlet and is obliquely arranged towards the inside of the dust remover; the cooling sleeve comprises an outer sleeve heat exchange tube, an inner sleeve heat exchange tube and a coke powder channel, wherein the inner sleeve heat exchange tube is spiral and is arranged in the coke powder channel. The device has reasonable structure and strong practicability, increases coke powder sedimentation by changing the direction of air flow, and reduces direct scouring of the vertical retaining wall; the inner sleeve heat exchange tube of the cooling sleeve adopts a spiral shape, so that the heat exchange area is increased, a guide effect is achieved, and the efficient utilization of energy is realized.
Description
Technical Field
The application relates to a primary dust removal and cooling device for coke dry quenching, belonging to the technical field of coke quenching.
Background
The dry quenching technology is a very important link in the coking industry of the steel industry. The dry quenching refers to a quenching way of cooling red coke by using inert circulating gas, compared with wet quenching. During the coke dry quenching process, red coke is loaded from the top of a coke dry quenching furnace, low-temperature inert gas is blown into a red coke layer of a cooling section of the coke dry quenching furnace by a circulating fan to absorb sensible heat of the red coke, the cooled coke is discharged from the bottom of the coke dry quenching furnace, high-temperature inert gas discharged from an annular flue of the coke dry quenching furnace flows through a coke dry quenching boiler to carry out heat exchange, the boiler generates steam, the cooled inert gas is blown into the coke dry quenching furnace again by the circulating fan, and the inert gas is recycled in a closed system. The dry quenching is superior to wet quenching in energy saving, environmental protection, coke quality improvement and the like. Dry quenching has the following advantages over wet quenching: (1) the coke dry quenching is a process for quenching coke in a closed system, which can basically eliminate phenol, HCN and H2S、NH3The discharge of the coke can be reduced, and the discharge of the coke dust and the water for coke quenching can be reduced; (2) the dry quenching has technical advantages in the aspects of waste heat utilization and coke quality improvement, so the dry quenching technology is generally accepted by people at present.
As the primary dust removal of the coke dry quenching is a connecting channel between the coke dry quenching furnace and the waste heat boiler, the primary dust removal of the coke dry quenching inert circulating gas is mainly responsible for the primary dust removal task of the coke dry quenching inert circulating gas so as to reduce the abrasion of coke powder on a heated pipe of the waste heat boiler. The existing primary dust remover for dry quenching mainly removes coke powder in circulating gas in a gravity settling mode, but the most common inertial dust remover with an upper retaining wall structure at present has the defects of easy deformation and strength reduction due to small impact force of high-temperature resistant circulating gas of the upper retaining wall, easy falling of bricks, even leading inert circulating gas with a large amount of coke powder to enter a waste heat boiler, accelerating the abrasion of a heated pipe of the inert circulating gas and influencing the heat exchange of the inert circulating gas, and even endangering the normal production of the dry quenching under severe conditions. In addition, the coke powder is cooled by three layers of cooling sleeves in the conventional dry quenching cooling process, and because the contact area between the tube body of each cooling sleeve and the coke powder is limited, the coke powder with higher temperature cannot be cooled to the target temperature after passing through the cooling sleeves, the temperature of the coke powder needs to be rapidly reduced to the target temperature by means of other cooling equipment, the time and the energy are consumed, and adverse effects are brought to the continuous production of the dry quenching.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the application provides a primary dust removal and cooling device for coke dry quenching, wherein the dust remover increases coke powder sedimentation and reduces direct scouring of a vertical retaining wall by changing the direction of air flow; the heat exchange pipe of the inner sleeve of the cooling sleeve adopts a spiral shape, so that the heat exchange area is increased, and other cooling equipment is not needed; the device is reasonable in structure and strong in practicability, and realizes efficient utilization of energy.
The utility model adopts the following technical scheme:
a dry quenching primary dust removal and cooling device comprises a dust remover and a cooling sleeve, wherein the dust remover is communicated with the cooling sleeve through a chute body;
the dust remover comprises a dust remover inlet, a dust remover outlet, a bulge, an inclined retaining wall and a vertical retaining wall, wherein the inclined retaining wall is positioned at the lower part of the dust remover inlet and is obliquely arranged towards the inside of the dust remover; the airflow direction is changed, the coke powder sedimentation is increased, the direct scouring of the vertical retaining wall is reduced, and the service life of the vertical retaining wall is prolonged;
the cooling sleeve comprises an outer sleeve heat exchange tube, an inner sleeve heat exchange tube and a coke powder channel, wherein the inner sleeve heat exchange tube is spiral and is arranged in the coke powder channel. The heat exchange area is increased, the guiding effect is achieved, and the efficient utilization of energy is realized.
Preferably, the chute pipe body comprises a first chute pipe body and a second chute pipe body, and the inclined retaining wall is arranged at the joint of the first chute pipe body and the second chute pipe body; a small amount of coke powder falls into the first chute pipe body, so that the direct scouring of airflow to the vertical retaining wall is reduced, and the heat exchange area between the coke powder and the cooling sleeve is increased;
the cooling sleeve comprises a first cooling sleeve and a second cooling sleeve, the top of the first cooling sleeve is connected with the bottom of the first sliding groove pipe body, and the top of the second cooling sleeve is connected with the bottom of the second sliding groove pipe body. The same batch of coke powder is cooled in the two cooling sleeves, so that the heat exchange load of the cooling sleeves is reduced, and the heat exchange is more thorough.
Preferably, the bulge is a plurality of bulges arranged at intervals, and the interval between every two bulges is 2-6 cm. Ensure that the coke powder can smoothly fall into the chute pipe body after colliding with the bulge.
Preferably, the protrusions are hemispherical, cylindrical, conical or bar-shaped. The coke powder can collide with the bulge after the airflow comes conveniently.
Preferably, the vertical height ratio of the protrusions to the vertical retaining wall is 0.05-0.2. Ensure that the coke powder carried in the air current can all fall into the chute tube body.
Preferably, the inclined retaining wall forms an angle of 40-60 degrees with the horizontal direction. The air flow direction can be effectively changed.
Preferably, the water inlet of the first inner sleeve heat exchange tube and the water outlet of the first inner sleeve heat exchange tube are arranged on the outer wall of the first outer sleeve heat exchange tube in parallel and positioned at the upper part of the first cooling sleeve;
the water inlet and the water outlet of the second inner sleeve heat exchange tube are arranged on the outer wall of the second outer sleeve heat exchange tube in parallel and are positioned at the upper part of the second cooling sleeve. Is convenient for water inlet and outlet and realizes high-efficiency heat exchange.
Preferably, the water inlet of the first outer sleeve heat exchange tube is arranged at the bottom end of the first cooling sleeve, and the water outlet of the first outer sleeve heat exchange tube is arranged at the top end of the first cooling sleeve;
the water inlet of the second outer sleeve heat exchange pipe is arranged at the bottom end of the second cooling sleeve, and the water outlet of the second outer sleeve heat exchange pipe is arranged at the top end of the second cooling sleeve. The coke powder and the cooling water which fall into the tube from top to bottom are convenient for countercurrent heat exchange.
Preferably, the helix angle of the first inner sleeve heat exchange tube and the helix angle of the second inner sleeve heat exchange tube are both 55-70 degrees. The heat exchange area is increased, and the coke powder is ensured to smoothly fall into the ash storage hopper.
Preferably, the bottom of the first cooling sleeve and the bottom of the second cooling sleeve are connected with ash storage hoppers. The cooled coke powder is convenient to collect.
Benefits that can be produced by the present application include, but are not limited to:
according to the device for removing dust and cooling coke in the dry quenching primary process, the coke powder sedimentation is increased by changing the airflow direction, the direct scouring of the vertical retaining wall is reduced, the vertical retaining wall is prevented from collapsing, and the service life of the vertical retaining wall is prolonged; the arrangement of the bulges ensures that more coke powder falls into the chute tube body, thereby further reducing the direct scouring of the airflow to the vertical retaining wall; the arrangement of the two cooling sleeves enables the same batch of coke powder to be cooled in the two cooling sleeves, so that the heat exchange load of the cooling sleeves is reduced, and the heat exchange is more thorough; the spiral heat exchange tubes are sleeved in the inner sleeve, so that the heat exchange area is increased, and the efficient utilization of energy is realized; the device is reasonable in structure, strong in practicability and convenient for industrial popularization and application.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic front view of a dry quenching primary dust removal and cooling device according to an embodiment of the present application;
FIG. 2 is a schematic front view of a first cooling jacket according to an embodiment of the present application;
list of parts and reference numerals:
1. the heat exchanger comprises a dust remover inlet, 2, a dust remover outlet, 3, an inclined retaining wall, 4, a protrusion, 5, a vertical retaining wall, 6, a first chute pipe body, 7, a second chute pipe body, 8, a first cooling sleeve, 9, a second cooling sleeve, 10, an ash storage hopper, 11, a first outer sleeve heat exchange pipe, 12, a first inner sleeve heat exchange pipe, 13, a coke powder channel, 14, a water inlet of the first inner sleeve heat exchange pipe, 15, a water outlet of the first inner sleeve heat exchange pipe, 16, a water inlet of the first outer sleeve heat exchange pipe, 17 and a water outlet of the first outer sleeve heat exchange pipe.
Detailed Description
In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.
In order that the above objects, features and advantages of the present application can be more clearly understood, the present application will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.
In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral parts thereof; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The primary dust removal and cooling device for coke dry quenching provided by the utility model is used for cooling red coke, and the structure of the primary dust removal and cooling device for coke dry quenching is described in detail below by combining the accompanying drawings.
Referring to fig. 1 and 2, the present application provides a primary dust removal and cooling device for coke dry quenching, which comprises a dust remover and a cooling jacket, wherein the dust remover and the cooling jacket are communicated through a chute pipe body so as to facilitate the introduction of blocked coke powder into the cooling jacket; the dust remover comprises a dust remover inlet 1, a dust remover outlet 2, a bulge part, an inclined retaining wall 3 and a vertical retaining wall 5, wherein the inclined retaining wall 3 is positioned at the lower part of the dust remover inlet 1 and is obliquely arranged towards the inside of the dust remover, the vertical retaining wall 5 is positioned at the upper part of the dust remover outlet 2 and is vertically arranged with the horizontal direction, the bulge part is positioned between the inclined retaining wall 3 and the vertical retaining wall 5 and is vertically arranged with the horizontal direction, the air flow direction is changed, the coke powder sedimentation is increased, and the direct scouring of the vertical retaining wall is reduced; the cooling sleeve comprises an outer sleeve heat exchange tube, an inner sleeve heat exchange tube and a coke powder channel 13, the inner sleeve heat exchange tube is spiral and is arranged in the coke powder channel 13, the heat exchange area is increased, and efficient utilization of energy is realized.
As an implementation mode, the chute tube body comprises a first chute tube body 6 and a second chute tube body 7, and the inclined baffle wall 3 is arranged at the joint of the first chute tube body 6 and the second chute tube body 7, so that a small amount of coke powder falls into the first chute tube body 6, direct scouring of airflow on the vertical baffle wall 5 is reduced, and the heat exchange area of the coke powder and the cooling sleeve is increased; specifically, the opening of the first chute pipe body 6 is smaller than the opening of the second chute pipe body 7, so that coke powder blocked at different positions can fall into corresponding cooling sleeves, and efficient heat exchange is realized;
the cooling sleeve comprises a first cooling sleeve 8 and a second cooling sleeve 9, the first cooling sleeve 8 and the second cooling sleeve 9 are identical in structure, the structure of the first cooling sleeve 8 is explained in detail below, the top of the first cooling sleeve 8 is connected with the bottom of the first chute pipe body 6, and the top of the second cooling sleeve 9 is connected with the bottom of the second chute pipe body 7, so that the same batch of coke powder is cooled in the two cooling sleeves, the heat exchange load of the cooling sleeves is reduced, and the heat exchange is more thorough.
As an implementation mode, the bulge part is a plurality of bulges 4 arranged at intervals, the interval between every two bulges 4 is 2-6cm, and the coke powder can smoothly fall into the chute pipe body after colliding with the bulges 4; preferably, the spacing between every two protrusions 4 is 4 cm. Specifically, the protrusions 4 are hemispherical, cylindrical, conical or strip-shaped, so that the coke powder can collide with the protrusions 4 conveniently after the airflow comes; preferably, the projections 4 are conical in shape, so as to facilitate the blocking of the coke powder and the passage of the air flow.
As an implementation mode, the vertical height ratio of the protrusions 4 to the vertical retaining walls 5 is 0.05-0.2, so that all coke powder carried in air flow can fall into the chute tube body; preferably, the vertical height ratio of the protrusions 4 to the vertical retaining walls 5 is 0.12.
As an implementation mode, the included angle between the inclined baffle wall 3 and the horizontal direction is 40-60 degrees; preferably, the inclined baffle wall 3 and the horizontal direction form an included angle of 50 degrees, which is beneficial to effectively changing the air flow direction and preventing a small amount of coke powder from falling into the first chute pipe body 6.
As an embodiment, the water inlet 14 of the first inner sleeve heat exchange tube and the water outlet 15 of the first inner sleeve heat exchange tube are arranged on the outer wall of the first outer sleeve heat exchange tube 11 in parallel and are positioned at the upper part of the first cooling sleeve 8;
the water inlet and the water outlet of the second inner sleeve heat exchange tube are arranged on the outer wall of the second outer sleeve heat exchange tube in parallel and are positioned at the upper part of the second cooling sleeve 9. Is convenient for water inlet and outlet and realizes high-efficiency heat exchange.
In one embodiment, the water inlet 16 of the first outer sleeve heat exchange pipe is arranged at the bottom end of the first cooling sleeve 8, and the water outlet 17 of the first outer sleeve heat exchange pipe is arranged at the top end of the first cooling sleeve 8;
the water inlet of the second outer sleeve heat exchange pipe is arranged at the bottom end of the second cooling sleeve 9, and the water outlet of the second outer sleeve heat exchange pipe is arranged at the top end of the second cooling sleeve 9. The coke powder and the cooling water which fall into the tube from top to bottom are convenient for countercurrent heat exchange.
In one embodiment, the helix angle of the first inner sleeve heat exchange tube 12 and the helix angle of the second inner sleeve heat exchange tube are both 55-70 degrees; preferably, the helix angle of the first inner sleeve heat exchange tube 12 is 65 degrees, the helix angle of the second inner sleeve heat exchange tube is 60 degrees, the heat exchange area is increased, and the coke powder is ensured to smoothly fall into the ash storage hopper 10.
In one embodiment, ash hoppers 10 are connected to the bottom of the first cooling jacket 8 and the bottom of the second cooling jacket 9, so as to collect cooled coke powder.
The working process of the primary dust removal and cooling device for dry quenching provided by the utility model is as follows:
the hot inert gas that goes out the dry quenching furnace is through building by laying bricks or stones when keeping off wall 3 to one side at dust remover entry 1, it falls into first spout body 6 to block a small amount of fine coke, the air current is changed into the flow that makes progress by the horizontal direction, collide with arch 4, block partial fine coke and fall into second spout body 7, the air current collides with vertical barricade 5 afterwards, the remaining fine coke that carries in the air current is whole to fall into second spout body 7, the fine coke that falls into first spout body 6 gets into ash storage hopper 10 behind first cooling jacket 8, the fine coke that falls into second spout body 7 gets into ash storage hopper 10 behind second cooling jacket 9.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A primary dust removal and cooling device for dry quenching is characterized by comprising a dust remover and a cooling sleeve, wherein the dust remover is communicated with the cooling sleeve through a chute pipe body;
the dust remover comprises a dust remover inlet, a dust remover outlet, a bulge, an inclined retaining wall and a vertical retaining wall, wherein the inclined retaining wall is positioned at the lower part of the dust remover inlet and is obliquely arranged towards the inside of the dust remover;
the cooling sleeve comprises an outer sleeve heat exchange tube, an inner sleeve heat exchange tube and a coke powder channel, wherein the inner sleeve heat exchange tube is spiral and is arranged in the coke powder channel.
2. The coke dry quenching primary dedusting and cooling device as set forth in claim 1, wherein the chute tube comprises a first chute tube and a second chute tube, and the inclined retaining wall is disposed at a junction of the first chute tube and the second chute tube;
the cooling sleeve comprises a first cooling sleeve and a second cooling sleeve, the top of the first cooling sleeve is connected with the bottom of the first sliding groove pipe body, and the top of the second cooling sleeve is connected with the bottom of the second sliding groove pipe body.
3. The coke dry quenching primary dust removal and cooling device of claim 1, wherein the protrusions are a plurality of protrusions arranged at intervals, and the interval between every two protrusions is 2-6 cm.
4. The dry quenching primary dust removal and cooling device of claim 3, wherein the protrusions are in the shape of hemispheres, cylinders, cones, or bars.
5. The coke dry quenching primary dedusting and cooling device as claimed in claim 4, wherein the vertical height ratio of the protrusions to the vertical retaining wall is 0.05-0.2.
6. The coke dry quenching primary dedusting and cooling apparatus as set forth in claim 1, wherein the angle between the inclined retaining wall and the horizontal direction is 40-60 °.
7. The dry quenching primary dedusting and cooling device as claimed in claim 2, wherein the water inlet of the first inner sleeve heat exchange tube and the water outlet of the first inner sleeve heat exchange tube are arranged on the outer wall of the first outer sleeve heat exchange tube in parallel and are positioned at the upper part of the first cooling sleeve;
the water inlet and the water outlet of the second inner sleeve heat exchange tube are arranged on the outer wall of the second outer sleeve heat exchange tube in parallel and are positioned at the upper part of the second cooling sleeve.
8. The dry quenching primary dust removal and cooling device as claimed in claim 2, wherein the water inlet of the first jacketed heat exchange tube is arranged at the bottom end of the first cooling jacket, and the water outlet of the first jacketed heat exchange tube is arranged at the top end of the first cooling jacket;
the water inlet of the second outer sleeve heat exchange pipe is arranged at the bottom end of the second cooling sleeve, and the water outlet of the second outer sleeve heat exchange pipe is arranged at the top end of the second cooling sleeve.
9. The coke dry quenching primary dust removal and cooling device as claimed in claim 7, wherein the helix angle of the first inner sleeve heat exchange tube and the second inner sleeve heat exchange tube is 55-70 °.
10. The dry quenching primary dust removal and cooling device as claimed in claim 2, wherein an ash storage hopper is connected to the bottom of the first cooling jacket and the bottom of the second cooling jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122832248.2U CN216738199U (en) | 2021-11-18 | 2021-11-18 | Primary dust removal and cooling device for dry quenching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122832248.2U CN216738199U (en) | 2021-11-18 | 2021-11-18 | Primary dust removal and cooling device for dry quenching |
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| Publication Number | Publication Date |
|---|---|
| CN216738199U true CN216738199U (en) | 2022-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122832248.2U Active CN216738199U (en) | 2021-11-18 | 2021-11-18 | Primary dust removal and cooling device for dry quenching |
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| CN (1) | CN216738199U (en) |
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- 2021-11-18 CN CN202122832248.2U patent/CN216738199U/en active Active
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