CN218511299U - High-temperature metal dust cooling device - Google Patents
High-temperature metal dust cooling device Download PDFInfo
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- CN218511299U CN218511299U CN202222744910.3U CN202222744910U CN218511299U CN 218511299 U CN218511299 U CN 218511299U CN 202222744910 U CN202222744910 U CN 202222744910U CN 218511299 U CN218511299 U CN 218511299U
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Abstract
The utility model belongs to the technical field of converter flue gas high temperature dirt cooling device, concretely relates to high temperature metal dust cooling device. The utility model discloses a high temperature metal dust cooling device includes: the ash bucket is provided with an ash outlet; at least two ash bins, and the outer wall of each ash bin is provided with a water cooling jacket; the ash guide pipes are arranged in one-to-one correspondence to the ash bins and respectively communicated with the corresponding ash bins and the ash outlets; the control valve groups are arranged in one-to-one correspondence with the corresponding ash guide pipes; and a control module. The utility model discloses a high temperature metal dust cooling device, adopt the cooling jacket cooling to lower the temperature, the cooling water does not directly contact with high temperature dust, the coal gas and the iron powder water content of follow-up collection are not influenced, the cooling water is not polluted and can directly circulate and recycle, avoid the water waste; the control module controls one set of control valve group to be opened, other control valve groups to be closed, all the ash bins are connected in parallel and interlocked, the control module works alternately, the cooling time is not too long due to the matching speed of the ash bins and the high-temperature dust in spray cooling, and the cooling efficiency is greatly improved.
Description
Technical Field
The utility model belongs to the technical field of converter flue gas high temperature dirt cooling device, concretely relates to high temperature metal dust cooling device.
Background
In the steelmaking industry, the primary dedusting dust of a converter mainly originates from oxides evaporated from a molten pool in the blowing process, fine particles extracted during iron adding, scrap steel adding and slag making, and the main components of flue gas are as follows: CO 86%, CO 2 10% of N 2 3.5% of O 2 0.5 percent; the iron content is more than or equal to 60 percent, the temperature is 1400-1600 ℃, and the smoke content is 80-150 g/m 3 . The data show that the flue gas contains inflammable and explosive gases, and the temperature of the flue gas is extremely high, the iron content is high, and the dust content is high. For example, patent CN113073170a discloses a system and a method for recovering residual heat of converter flue gas, which can recover the residual heat of converter flue gas and treat dust in the flue gas.
The existing dust collection process recovers dust by mostly adopting water-cooling spraying cooling to a dust collection bin, and the dust is conveyed by a carrier or conveyed to a raw material plant by a few vacuum tank trucks for recycling after being sprayed with water, cooled, humidified in the dust collection bin. On one hand, the process wastes water resources, and the water content of the coal gas and the iron powder collected subsequently is not controllable. On the other hand, the spraying and cooling time through the dust collection bin is longer and uncontrollable.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a high temperature metal dust cooling device to solve current converter flue gas high temperature dust and retrieve and adopt to spray longer and cause the technical problem of water waste of cooling time to dust collection bin water-cooling.
In order to solve the technical problem, the utility model provides a high temperature metal dust cooling device, include: the ash bucket is provided with an ash outlet; at least two ash bins, and the outer wall of each ash bin is provided with a water-cooling jacket; the ash guide pipes are arranged in one-to-one correspondence to the ash bins and are respectively communicated with the corresponding ash bins and the ash outlets; the control valve groups are arranged in one-to-one correspondence with the corresponding ash guide pipes; and the control module is suitable for controlling one control valve group to open the ash guide pipe, receiving the falling ash in the ash hopper and guiding the falling ash into the corresponding ash bin, and keeping the other control valve groups closed.
Further, the control valve group includes: the valve is arranged on one side of the ash guide pipe close to the ash outlet; the two valves are arranged on one side of the ash guide pipe close to the corresponding ash bin; the control module is suitable for controlling the first valve to be opened and the second valve to be closed, and the ash guide pipe receives the falling ash in the ash hopper; and the control module is suitable for controlling the first valve to be closed and the second valve to be opened, and guiding the falling ash in the ash guide pipe into the ash bin.
Further, the ash bin comprises: the ash bin body is provided with an ash discharge baffle plate in the inner cavity, an ash inlet of the ash bin body is connected with a corresponding ash guide pipe, and an ash discharge valve is arranged at an ash discharge port of the ash bin body.
Further, the water-cooling jacket includes: the jacket body is covered on the outer side of the corresponding ash bin body; wherein a circulating cooling water channel is formed between the jacket body and the ash bin body; the jacket body is provided with a cooling water inlet and a cooling water outlet.
Further, the cooling water inlet is arranged on the side wall of the jacket body close to the ash discharge valve; and the cooling water outlet is arranged on the side wall of the jacket body close to the ash guide pipe.
Furthermore, a nitrogen inlet is formed in the side wall, close to the ash guide pipe, of the ash bin body; wherein the gas inlet end of the nitrogen inlet penetrates out of the jacket body.
Further, the ash discharge baffle is a spiral slow-delay ash discharge baffle.
The beneficial effects of the utility model are that, the utility model discloses a high temperature metal dust cooling device adopts water-cooling jacket cooling mode to cool down, and the cooling water does not directly contact with the high temperature dust, and the coal gas and the iron powder water content of follow-up collection are not influenced, and the water content is controllable, and the cooling water is not polluted and can directly be recycled, effectively avoids the water waste; one set of control valve group is controlled to be opened through the control module, and other control valve groups are closed, so that the parallel interlocking of the ash bins is realized, the ash bins work alternately, the ash bins are cooled all the time in the high-temperature dust recovery production line, the ash bins are fed with ash, the problem that the cooling time is too long due to the fact that the ash dropping speed is delayed because the ash bins need to be matched with the speed of spraying and cooling high-temperature dust is solved, and the cooling efficiency is greatly improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of a preferred embodiment of a high temperature metal dust cooling apparatus of the present invention;
fig. 2 is a block diagram of a preferred embodiment of a high-temperature metal dust cooling apparatus according to the present invention.
In the figure:
an ash hopper 1 and an ash outlet 2;
the ash bin 3, an ash bin body 31, an ash discharge baffle 32 and an ash discharge valve 33;
a water-cooling jacket 4, a jacket body 41, a circulating cooling water channel 42, a cooling water inlet 43, and a cooling water outlet 44;
an ash guide pipe 5;
a control valve group 6, a first valve 61 and a second valve 62;
a nitrogen inlet 7.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
As shown in fig. 1 and 2, a high-temperature metal dust cooling apparatus of the present embodiment includes: the ash bin comprises an ash bucket 1, at least two ash bins 3, a plurality of ash guide pipes 5, a plurality of sets of control valve groups 6 and a control module; wherein the ash bucket 1 is provided with an ash outlet 2; the outer wall of each ash bin 3 is provided with a water-cooling jacket 4; the ash guide pipes 5 are arranged in one-to-one correspondence with the ash bins 3 and are respectively communicated with the corresponding ash bins 3 and the ash outlets 2; the control valve groups 6 are arranged corresponding to the corresponding ash guide pipes 5 one by one; and the control module is suitable for controlling a control valve group 6 to open the ash guide pipe 5, guide the falling ash in the ash receiving hopper 1 into the corresponding ash bin 3 and keep the rest control valve groups 6 closed. Control module can adopt PLC, and how PLC controls opening and shutting of each valve unit 6 is prior art, is not the design essential of this embodiment, and here is no longer described any more. The cooling is carried out by adopting a cooling mode of a water cooling jacket 4, cooling water is not in direct contact with high-temperature dust, the water content of subsequently collected coal gas and iron powder is not influenced, the water content is controllable, the cooling water is not polluted and can be directly recycled, and the waste of water resources is effectively avoided; one set of control valves 6 is controlled to be opened through the control module, and other control valves 6 are closed, so that the parallel interlocking of the ash bins 3 is realized, the ash bins 3 work alternately, the ash bins 3 are cooled all the time in the high-temperature dust recovery production line, the ash bins 3 enter ash, the cooling time is not too long due to the fact that the ash bins 3 need to be matched with the speed of spraying and cooling high-temperature dust to delay the ash falling speed, and the cooling efficiency is greatly improved.
As shown in fig. 1 and 2, in the present embodiment, specifically, the control valve group 6 includes: a first valve 61 and a second valve 62; wherein, a valve 61 is arranged at one side of the ash guide pipe 5 close to the ash outlet 2; the second valve 62 is arranged at one side of the ash guide pipe 5 close to the corresponding ash bin 3; the control module is suitable for controlling the first valve 61 to be opened and the second valve 62 to be closed, and the ash guide pipe 5 receives the falling ash in the ash hopper 1; and the control module is suitable for controlling the closing of the first valve 61 and the opening of the second valve 62, and the falling ash in the ash guide pipe 5 is guided into the ash bin 3. Open earlier through control module control one valve 61, because two valves 62 are in the closure state, lead ash pipe 5 and play the function of keeping in high temperature dust to extrude the gas in the 5 inner chambers of discharge ash pipe, the air in the ash bucket 1 can not be along with high temperature dust gets into corresponding ash storehouse 3, reduces the risk of exploding of revealing of CO gas.
As shown in fig. 1, in the present embodiment, specifically, the ash bin 3 includes: an ash bin body 31; an inner cavity of the ash bin body 31 is provided with an ash discharge baffle 32, an ash inlet of the ash bin body 31 is connected with the corresponding ash guide pipe 5, and an ash discharge valve 33 is arranged at an ash discharge port of the ash bin body 31. High-temperature dust enters the ash bin body 31 from the ash guide pipe 5 and is discharged from the ash discharge valve 33 under the slow guidance of the ash discharge baffle 32, the cooling time is prolonged, and the temperature of the high-temperature dust is cooled by heat exchange of the water cooling jacket 4 in the guidance process of the ash discharge baffle 32.
As shown in fig. 1, in the present embodiment, specifically, the water-cooling jacket 4 includes: a jacket body 41; wherein, the jacket body 41 covers the outer side of the corresponding ash bin body 31; a circulating cooling water channel 42 is formed between the jacket body 41 and the ash bin body 31; the jacket body 41 is provided with a cooling water inlet 43 and a cooling water outlet 44. The cooling water inlet 43, the circulating cooling water channel 42 and the cooling water outlet 44 are externally connected with pipelines to form a circulating cooling loop, the cooling water is not directly contacted with high-temperature dust, and is cooled only through heat exchange, so that the water content of the subsequently collected coal gas and iron powder is prevented from being influenced.
As shown in fig. 1, in the present embodiment, it is preferable that a cooling water inlet 43 is provided on a side wall of the jacket body 41 near the ash discharge valve 33; the cooling water outlet 44 is provided on the side wall of the jacket body 41 near the dust guide pipe 5. The flow direction of the cooling water in the circulating cooling water channel 42 is opposite to the direction of the high-temperature dust in the ash bin 3, so that the coldest part of the cooling water exchanges heat with the high-temperature dust to be guided out of the ash discharge valve 33, and the high-temperature dust is cooled more effectively.
In the present embodiment, as shown in fig. 1, preferably, a nitrogen gas inlet 7 is opened on the side wall of the ash bin body 31 near the ash guide pipe 5; wherein the gas inlet end of the nitrogen gas inlet 7 passes through the jacket body 41. When unloading valve 33 opens oblique ash, from the external world through nitrogen gas entry 7 to filling into high concentration nitrogen gas in the ash bin 3, prevent that the air from getting into the ash bin from unloading valve 33 under the circumstances of assurance uniform pressure, greatly reduced the risk of revealing of CO gas to avoid arousing the burning and exploding point, avoid burning and exploding the risk.
As shown in fig. 1, in the present embodiment, the lower ash baffle 32 is preferably a spiral retarded lower ash baffle. The lower ash baffle 32 is designed to be spiral slow-delay, so that the cooling area is increased, the cooling time is prolonged, and the cooling effect of high-temperature dust is improved.
To sum up, the cooling device for high-temperature metal dust adopts a water-cooling jacket cooling mode to cool, cooling water does not directly contact with the high-temperature dust, the water content of the subsequently collected coal gas and iron powder is not influenced, the water content is controllable, the cooling water is not polluted and can be directly recycled, and the waste of water resources is effectively avoided; one set of control valve group is controlled to be opened through the control module, and other control valve groups are closed, so that the parallel interlocking of the ash bins is realized, the ash bins work alternately, the ash bins are cooled all the time in the high-temperature dust recovery production line, the ash bins are fed with ash, the problem that the cooling time is too long due to the fact that the ash dropping speed is delayed because the ash bins need to be matched with the speed of spraying and cooling high-temperature dust is solved, and the cooling efficiency is greatly improved. The first valve is controlled to be opened firstly through the control module, and the ash guide pipe plays a role of temporarily storing high-temperature dust because the second valve is in a closed state, and the gas in the inner cavity of the ash guide pipe is extruded and discharged, so that the air in the ash bucket can not enter the corresponding ash bin along with the high-temperature dust, and the leakage explosion risk of CO gas is reduced. High-temperature dust enters the ash bin body from the ash guide pipe and is discharged from the ash discharge valve under the slow guidance of the ash discharge baffle plate, the cooling time is prolonged, and the temperature of the high-temperature dust is cooled by heat exchange of the water cooling jacket in the guidance process of the ash discharge baffle plate. The circulating cooling loop is formed by the cooling water inlet, the circulating cooling water channel and the cooling water outlet which are externally connected with pipelines, the cooling water is not directly contacted with high-temperature dust, and is cooled only through heat exchange, so that the water content of the subsequently collected coal gas and iron powder is prevented from being influenced. The flow direction of the cooling water in the circulating cooling water channel is opposite to the trend of the high-temperature dust in the ash bin, so that the coldest part of the cooling water exchanges heat with the high-temperature dust to be led out of the ash discharge valve, and the high-temperature dust is cooled more effectively. When the ash discharge valve is opened oblique ash, high-concentration nitrogen is filled into the ash bin from the outside through the nitrogen inlet, so that the air is prevented from entering the ash bin from the ash discharge valve under the condition of ensuring certain pressure, the leakage risk of CO gas is greatly reduced, the explosion point is prevented from being caused, and the explosion risk is avoided. The ash discharging baffle is designed to be spiral slow-delay, so that the cooling area is increased, the cooling time is prolonged, and the cooling effect of high-temperature dust is improved.
The components (components without specific structures) selected for use in the present application are all common standard components or components known to those skilled in the art, and the structures and principles thereof can be known to those skilled in the art through technical manuals or through routine experimental methods.
In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or component to which the reference is made must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the description, and must be determined according to the scope of the claims.
Claims (7)
1. A high-temperature metal dust cooling device is characterized by comprising:
an ash bucket (1) provided with an ash outlet (2);
at least two ash bins (3), and the outer wall of each ash bin (3) is provided with a water-cooling jacket (4);
the ash guide pipes (5) are arranged in one-to-one correspondence to the ash bins (3) and are respectively communicated with the corresponding ash bins (3) and the ash outlets (2);
the control valve groups (6) are arranged in one-to-one correspondence with the corresponding ash guide pipes (5); and
and the control module is suitable for controlling one control valve group (6) to open the ash guide pipe (5), guiding the falling ash in the ash receiving hopper (1) into the corresponding ash bin (3), and keeping the other control valve groups (6) closed.
2. A high-temperature metal dust cooling apparatus as defined in claim 1,
the control valve group (6) comprises:
the valve (61) is arranged on one side of the ash guide pipe (5) close to the ash outlet (2);
the two valves (62) are arranged on one side of the ash guide pipe (5) close to the corresponding ash bin (3); wherein
The control module is suitable for controlling the first valve (61) to be opened and the second valve (62) to be closed, and the ash guide pipe (5) receives the falling ash in the ash hopper (1); and
the control module is suitable for controlling the first valve (61) to be closed, the second valve (62) to be opened and the falling ash in the ash guide pipe (5) to be guided into the ash bin (3).
3. A high-temperature metal dust cooling apparatus as defined in claim 1,
the ash bin (3) comprises:
the ash bin comprises an ash bin body (31), wherein an inner cavity of the ash bin body is provided with an ash discharge baffle (32), an ash inlet of the ash bin body is connected with a corresponding ash guide pipe (5), and an ash discharge opening of the ash bin body is provided with an ash discharge valve (33).
4. A high temperature metal dust cooling apparatus as defined in claim 3,
the water-cooling jacket (4) comprises:
the jacket body (41) is covered on the outer side of the corresponding ash bin body (31); wherein
A circulating cooling water channel (42) is formed between the jacket body (41) and the ash bin body (31);
the jacket body (41) is provided with a cooling water inlet (43) and a cooling water outlet (44).
5. A high-temperature metal dust cooling apparatus as defined in claim 4,
the cooling water inlet (43) is arranged on the side wall of the jacket body (41) close to the ash discharge valve (33);
and the cooling water outlet (44) is arranged on the side wall of the jacket body (41) close to the ash guide pipe (5).
6. A high temperature metal dust cooling apparatus as defined in claim 4,
a nitrogen inlet (7) is formed in the side wall, close to the ash guide pipe (5), of the ash bin body (31); wherein
The gas inlet end of the nitrogen inlet (7) penetrates out of the jacket body (41).
7. A high temperature metal dust cooling apparatus as defined in claim 3,
the ash discharge baffle (32) is a spiral slow-delay ash discharge baffle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222744910.3U CN218511299U (en) | 2022-10-18 | 2022-10-18 | High-temperature metal dust cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222744910.3U CN218511299U (en) | 2022-10-18 | 2022-10-18 | High-temperature metal dust cooling device |
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| Publication Number | Publication Date |
|---|---|
| CN218511299U true CN218511299U (en) | 2023-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222744910.3U Active CN218511299U (en) | 2022-10-18 | 2022-10-18 | High-temperature metal dust cooling device |
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| CN (1) | CN218511299U (en) |
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- 2022-10-18 CN CN202222744910.3U patent/CN218511299U/en active Active
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