CN217418622U - Coke oven gas steam heater - Google Patents
Coke oven gas steam heater Download PDFInfo
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- CN217418622U CN217418622U CN202221757064.2U CN202221757064U CN217418622U CN 217418622 U CN217418622 U CN 217418622U CN 202221757064 U CN202221757064 U CN 202221757064U CN 217418622 U CN217418622 U CN 217418622U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The utility model discloses a coke oven gas steam heater, sweep takeover, nitrogen gas sweep takeover and coal gas diffuse a mouthful takeover including barrel, heat exchanger core, preceding head, back head, steam. The side walls of the front end and the rear end of the cylinder body are respectively connected with a steam inlet connecting pipe and a steam outlet connecting pipe. The heat exchanger core is located in the barrel. The front end enclosure is connected with the front end of the cylinder body and the front end of the heat exchanger core through flanges. The front seal head is connected with a coal gas inlet connecting pipe. The rear end enclosure is connected with the rear end of the cylinder body and the rear end of the heat exchanger core through flanges. The rear end enclosure is connected with a coal gas outlet connecting pipe. The steam purging connecting pipe is arranged on the front sealing head, and a steam purging valve is arranged in the steam purging connecting pipe. The nitrogen purging connecting pipe is arranged on the side wall of the steam purging connecting pipe, and a nitrogen purging valve is arranged inside the nitrogen purging connecting pipe. The coal gas diffusion opening connecting pipe is arranged on the side wall of the coal gas outlet connecting pipe, a diffusion valve is arranged in the coal gas diffusion opening connecting pipe, impurities on the heat exchanger core are blown and washed through high temperature of steam, the corrosion of the heat exchanger core is prevented, and the service life of the heat exchanger core is prolonged.
Description
Technical Field
The utility model relates to a heater technical field, concretely relates to coke oven gas steam heater.
Background
The coke oven gas purification system mainly utilizes the temperature swing adsorption principle of a naphthalene removal tower to remove impurities such as hydrogen sulfide, tar, naphthalene and the like in the coke oven gas, wherein adsorbent activated carbon in the naphthalene removal tower needs to be regenerated periodically to recycle the activated carbon, and most of the coke oven gas is regenerated by using heated coke oven gas in the prior art, so a steam heater is needed to heat the coke oven gas.
At present, the steam heater is large in size, in order to reduce equipment cost, most of internal heat exchange pipelines are made of carbon steel, and impurities in coke oven gas have a strong corrosion effect on metal carbon steel, so that the service life of the heater is short, the heater is frequently overhauled, particularly, in non-regenerative time, a steam inlet and outlet valve is closed, the gas inlet and outlet valve is closed, and under the condition that the gas inlet and outlet valve cannot be completely closed due to gas corrosion, gas leaks into the heater, so that impurities such as tar, naphthalene and scale are attached to the internal pipelines, corrosion of the heat exchange pipelines is accelerated, the function of the heater is lost, and equipment is scrapped.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a coke oven gas steam heater.
The purpose of the utility model can be realized by the following technical scheme:
the coke oven gas steam heater comprises a cylinder, a heat exchanger core, a front seal head, a rear seal head, a steam purging connecting pipe, a nitrogen purging connecting pipe and a gas diffusing port connecting pipe.
The side walls of the front end and the rear end of the cylinder body are respectively connected with a steam inlet connecting pipe and a steam outlet connecting pipe.
The heat exchanger core is located in the barrel.
The front end enclosure is connected with the front end of the cylinder body and the front end of the heat exchanger core through flanges. The front seal head is connected with a coal gas inlet connecting pipe.
The rear end enclosure is connected with the rear end of the cylinder body and the rear end of the heat exchanger core through flanges. The rear end enclosure is connected with a coal gas outlet connecting pipe.
Wherein, the front seal head and the rear seal head are both provided with sewage outlets.
The steam purging connecting pipe is arranged on the front sealing head, and a steam purging valve is arranged in the steam purging connecting pipe.
The nitrogen purging connecting pipe is arranged on the side wall of the steam purging connecting pipe, and a nitrogen purging valve is arranged inside the nitrogen purging connecting pipe.
The coal gas diffusion port connecting pipe is arranged on the side wall of the coal gas outlet connecting pipe, and a diffusion valve is arranged in the coal gas diffusion port connecting pipe.
As a further aspect of the present invention: and the front end and the rear end of the cylinder body are both provided with connecting flanges. The front end and the rear end of the heat exchanger core are respectively provided with a front end flange and a rear end flange. The front seal head is provided with a front seal flange. And a rear sealing flange is arranged on the rear sealing head.
Wherein, the front sealing flange, the front end flange and the connecting flange at the front end of the cylinder body are connected through bolts. The rear sealing flange, the rear end flange and the connecting flange at the rear end of the cylinder body are connected through bolts.
As a further aspect of the present invention: the rear end of the heat exchanger core is positioned outside the rear end of the cylinder, and a sealing flange is arranged between the rear end flange and the connecting flange at the rear end of the cylinder. And a rubber sealing ring is arranged between the inner hole of the sealing flange and the outer wall of the heat exchanger core.
As a further aspect of the present invention: the cylinder body is horizontally arranged along the extending direction. In the vertical direction, the steam inlet connecting pipe is positioned at the top of the cylinder body and is internally provided with a steam inlet valve. The steam outlet connecting pipe is positioned at the bottom of the cylinder body and is internally provided with a steam outlet valve. The steam sweeping connecting pipe is positioned at the top of the front seal head. The drain is located the bottom of preceding head and back head.
As a further aspect of the present invention: the heat exchanger also comprises a plurality of round tube plates which are arranged on the outer wall of the heat exchanger core at intervals. The diameter of the round tube plate is smaller than the inner diameter of the cylinder body, the round tube plate with the notch at the lower part is an upper round tube plate, the round tube plate with the notch at the upper part is a lower round tube plate, and the upper round tube plate and the lower round tube plate are arranged in a staggered mode.
As a further aspect of the present invention: the bottom gap of the upper circular tube plate is provided with a pulley. The pulley contacts with the inner wall of the cylinder.
The utility model has the advantages that:
when the coke oven gas steam heater is used, after the coke oven gas is heated by the heat exchanger core, the coke oven gas inlet connecting pipe, the coke oven gas outlet connecting pipe, the steam inlet connecting pipe and the steam outlet connecting pipe are closed, the nitrogen purging valve and the blow-off valve are opened, the device is purged, the gas in the cylinder body is replaced, the blow-off valve and the nitrogen purging valve are closed, the steam purging valve and the blow-off valve are opened, impurities on the heat exchanger core can be purged through the high temperature of the steam, the corrosion of the heat exchanger core is prevented, and the service life of the heat exchanger core is prolonged;
the upper circular tube plate and the lower circular tube plate are arranged in a staggered manner, so that steam flows in an S shape in the cylinder body, the heat exchange distance is enlarged, and the heat exchange effect is better;
go up the breach department of round tube sheet bottom and install the pulley, can drive the heat exchanger core at the inside back-and-forth movement of barrel under the effect of external force to make things convenient for the quick assembly disassembly of heat exchanger core.
Drawings
The present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of a coke oven gas steam heater according to the present invention;
FIG. 2 is a front view of the coke oven gas steam heater of the present invention.
In the figure: 1. a cylinder body; 2. a front end enclosure; 3. sealing the end; 4. a gas inlet connecting pipe; 5. a gas outlet connecting pipe; 6. a steam inlet connection pipe; 7. a steam outlet connection pipe; 8. a gas diffusion port connecting pipe; 9. a connecting flange; 10. a sewage draining outlet; 11. a steam purge connection pipe; 12. nitrogen purging the connecting pipe; 13. a lower circular tube plate; 14. an upper round tube plate; 15. a pulley; 16. a heat exchanger core.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-2, the coke oven gas steam heater of the present invention comprises a cylinder 1, a heat exchanger core 16, a front end enclosure 2, a rear end enclosure 3, a steam purging connection pipe 11, a nitrogen purging connection pipe 12, a gas diffusing connection pipe 8, etc.
The utility model provides a flange 9 is all installed at barrel 1 preceding, back both ends, is connected with steam inlet respectively on preceding, the back both ends lateral wall simultaneously and takes over 6 and steam outlet takeover 7. The steam inlet connecting pipe 6 is used for connecting steam equipment, injecting steam into the cylinder body 1 and heating and exchanging heat for the heat exchanger core 16. The steam outlet connection 7 serves for the discharge of steam. Therefore, the steam inlet nipple 6 and the steam outlet nipple 7 should be located at both ends of the drum 1. Meanwhile, considering the temperature change of the steam after the heat exchange operation, the steam outlet connecting pipe 7 is preferably located at the bottom of the cylinder 1, so that the steam outlet connecting pipe 7 is located at the bottom of the cylinder 1 in the vertical direction when the steam heat exchanger is installed and used.
It should be noted that valves are respectively arranged in the steam inlet connecting pipe 6 and the steam outlet connecting pipe 7, and the on-off of the pipeline can be controlled.
The heat exchanger core 16 of the utility model is used for processing coke oven gas. The heat exchanger core 16 is positioned in the cylinder 1, and a front end flange and a rear end flange are respectively arranged at the front end and the rear end. The front seal head 2 is provided with a front seal flange. Wherein, the front sealing flange, the front end flange and the connecting flange 9 at the front end of the cylinder 1 are connected through bolts. The front seal head 2 is connected with a coal gas inlet connecting pipe 4. The gas inlet connecting pipe 4 is used for introducing gas into the cylinder body 1. And a rear sealing flange is arranged on the rear sealing head 3. Wherein, the rear sealing flange, the rear end flange and the connecting flange 9 at the rear end of the cylinder 1 are connected through bolts. The rear end enclosure 3 is connected with a coal gas outlet connecting pipe 5. The gas outlet connection 5 is used for discharging gas.
The utility model provides a drain 10 has all been seted up on preceding head 2 and the back head 3. A drain outlet 10 valve is arranged in the drain outlet 10.
Specifically, the steam purging connecting pipe 11 is installed on the front end enclosure 2, and a steam purging valve is arranged inside the steam purging connecting pipe. The nitrogen purging connecting pipe 12 is arranged on the side wall of the steam purging connecting pipe 11, and a nitrogen purging valve is arranged inside the nitrogen purging connecting pipe. The gas diffusion port connecting pipe 8 is arranged on the side wall of the gas outlet connecting pipe 5, and a diffusion valve is arranged in the gas diffusion port connecting pipe. When the device is used, after the coke oven gas is heated through the heat exchanger core 16, the gas inlet connecting pipe 4, the gas outlet connecting pipe 5, the steam inlet connecting pipe 6 and the steam outlet connecting pipe 7 are closed, the nitrogen purging valve and the blow-off valve are opened, purging of the device is started, the blow-off valve and the nitrogen purging valve are closed after the gas in the cylinder body 1 is replaced, the steam purging valve and the drain outlet 10 valve are opened, impurities (tar, naphthalene and the like) on the heat exchanger core 16 can be purged through high temperature of steam, the service life of the heat exchanger core 16 is prolonged, and the nitrogen purging valve and the drain outlet 10 valve are closed after purging. The nitrogen is introduced to keep positive pressure inside the cylinder 1 to prevent gas, water vapor and the like in an external pipeline from entering the cylinder 1 and prevent the heat exchanger core 16 from being corroded.
It should be noted that the coke oven gas steam heater of the present invention is preferably installed horizontally, the gas inlet connecting pipe 4 is located at the center of the front end enclosure 2, and the gas enters from the inlet pipe, passes through the heat exchanger core 16, is heated by the steam, and is discharged from the outlet. That is, the cylinder 1 is horizontally placed in the extending direction. In the vertical direction, the steam inlet connecting pipe 6 is positioned at the top of the cylinder body 1 and is internally provided with a steam inlet valve. The steam outlet connecting pipe 7 is positioned at the bottom of the cylinder body 1 and is internally provided with a steam outlet valve. The steam sweeping connecting pipe 11 is positioned at the top of the front head 2. The drain outlet 10 is positioned at the bottom of the front seal head 2 and the rear seal head 3.
In an embodiment of the present invention, in order to improve the sealing effect, the length L1 of the heat exchanger core 16 is greater than the length L2 of the cylinder 1, specifically, L1-L2, L ≦ 10mm ≦ 30 mm. Wherein, the front end of heat exchanger core 16 aligns with barrel 1 front end, and the heat exchanger core 16 rear end surpasss barrel 1 length L, in order to prevent that steam from getting into back head 3 outside heat exchanger core 16, installs sealing flange between the flange 9 of rear end flange and barrel 1 rear end, and sealing flange width is close with L, is provided with rubber seal between sealing flange's hole and heat exchanger core 16 outer wall. Specifically, an annular groove can be formed in the inner hole of the sealing flange, a rubber O-shaped sealing ring is installed in the annular groove, the outer side of the sealing ring is fixed with the sealing flange through the annular groove, and the inner side of the sealing ring is fixed with the rear end of the heat exchanger core 16 through extrusion.
In one embodiment of the present invention, the coke oven gas steam heater may further include a plurality of circular tube plates installed at intervals on the outer wall of the heat exchanger core 16. The diameter of the round tube plate is smaller than the inner diameter of the cylinder body 1, and a notch is formed in the round tube plate. Wherein, two gaps on the adjacent round tube plates are respectively positioned at the top and the bottom of the cylinder body 1. As shown in fig. 1, the circular tube plate with the lower gap is defined as an upper circular tube plate 14, the circular tube plate with the upper gap is defined as a lower circular tube plate 13, and the upper circular tube plate 14 and the lower circular tube plate 13 are arranged in a staggered manner, so that steam flows in the barrel 1 in an S-shaped manner, and the heat exchange distance is increased.
Further, a pulley 15 can be installed at the notch at the bottom of the upper round tube plate 14. The pulley 15 is in contact with the inner wall of the cylinder 1. The heat exchanger core 16 can be driven to move back and forth in the cylinder 1 under the action of external force, so that the heat exchanger core 16 can be detached and installed. The embodiment also defines the installation mode of the pulley 15, two bolt holes are arranged on the lower gap surface of the upper round tube plate 14, and the pulley 15 is fixed on the gap surface of the upper round tube plate 14 through bolts.
It should be noted that, in order to avoid the interference of the pulley 15 with the interface of the steam outlet connection pipe 7 during the movement process, a connecting plate with a width close to that of the pulley 15 is further arranged at the interface of the steam outlet connection pipe 7, and the auxiliary pulley 15 runs in the same line.
The utility model discloses in, during each flange joint, all use seal gasket, prevent the leakage of steam, coal gas.
Although an embodiment of the present invention has been described in detail, the description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (6)
1. A coke oven gas steam heater comprising:
the side walls of the front end and the rear end of the cylinder body (1) are respectively connected with a steam inlet connecting pipe (6) and a steam outlet connecting pipe (7);
a heat exchanger core (16) located within the cylinder (1);
the front end enclosure (2) is connected with the front end of the cylinder body (1) and the front end of the heat exchanger core (16) through flanges; the front seal head (2) is connected with a coal gas inlet connecting pipe (4); and
the rear end enclosure (3) is connected with the rear end of the cylinder body (1) and the rear end of the heat exchanger core (16) through flanges; the rear end enclosure (3) is connected with a coal gas outlet connecting pipe (5);
wherein, the front seal head (2) and the rear seal head (3) are both provided with sewage outlets (10);
it is characterized by also comprising:
the steam purging connecting pipe (11) is arranged on the front end enclosure (2), and a steam purging valve is arranged in the steam purging connecting pipe;
the nitrogen purging connecting pipe (12) is arranged on the side wall of the steam purging connecting pipe (11), and a nitrogen purging valve is arranged in the nitrogen purging connecting pipe; and
a gas diffusion port connecting pipe (8) which is arranged on the side wall of the gas outlet connecting pipe (5) and is internally provided with a diffusion valve.
2. The coke oven gas steam heater of claim 1, wherein the front and rear ends of the cylinder (1) are provided with connecting flanges (9); the front end and the rear end of the heat exchanger core (16) are respectively provided with a front end flange and a rear end flange; a front sealing flange is arranged on the front sealing head (2); a rear sealing flange is arranged on the rear sealing head (3);
the front sealing flange, the front end flange and the connecting flange (9) at the front end of the cylinder body (1) are connected through bolts; the rear sealing flange, the rear end flange and the connecting flange (9) at the rear end of the cylinder body (1) are connected through bolts.
3. The coke oven gas steam heater of claim 2, wherein the rear end of the heat exchanger core (16) is located outside the rear end of the cylinder (1), and a sealing flange is installed between the rear end flange and the connecting flange (9) at the rear end of the cylinder (1); and a rubber sealing ring is arranged between the inner hole of the sealing flange and the outer wall of the heat exchanger core (16).
4. Coke oven gas steam heater according to claim 1, characterized in that the cylinder (1) is placed horizontally in the direction of extension; in the vertical direction, the steam inlet connecting pipe (6) is positioned at the top of the cylinder body (1) and is internally provided with a steam inlet valve; the steam outlet connecting pipe (7) is positioned at the bottom of the cylinder body (1) and is internally provided with a steam outlet valve; the steam sweeping connecting pipe (11) is positioned at the top of the front seal head (2); the sewage draining port (10) is positioned at the bottoms of the front seal head (2) and the rear seal head (3).
5. Coke oven gas steam heater according to claim 4, characterized by further comprising a plurality of circular tube plates mounted at intervals on the outer wall of said heat exchanger core (16); the diameter of the round tube plate is smaller than the inner diameter of the cylinder body (1), and a notch is formed in the round tube plate;
wherein, two gaps on the adjacent round tube plates are respectively positioned at the top and the bottom of the cylinder body (1).
6. The coke oven gas steam heater of claim 5, wherein the bottom of the round tube plate with the notch at the bottom of the cylinder (1) is provided with a pulley (15); the pulley (15) is in contact with the inner wall of the cylinder body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221757064.2U CN217418622U (en) | 2022-07-07 | 2022-07-07 | Coke oven gas steam heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221757064.2U CN217418622U (en) | 2022-07-07 | 2022-07-07 | Coke oven gas steam heater |
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| Publication Number | Publication Date |
|---|---|
| CN217418622U true CN217418622U (en) | 2022-09-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221757064.2U Active CN217418622U (en) | 2022-07-07 | 2022-07-07 | Coke oven gas steam heater |
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| CN (1) | CN217418622U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115435244A (en) * | 2022-09-23 | 2022-12-06 | 湖南华菱涟源钢铁有限公司 | Control method of middle-low pressure nitrogen gas communication valve of oxygen generation system |
-
2022
- 2022-07-07 CN CN202221757064.2U patent/CN217418622U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115435244A (en) * | 2022-09-23 | 2022-12-06 | 湖南华菱涟源钢铁有限公司 | Control method of middle-low pressure nitrogen gas communication valve of oxygen generation system |
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