CN209940905U - Ascending pipe heat exchanger - Google Patents
Ascending pipe heat exchanger Download PDFInfo
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- CN209940905U CN209940905U CN201920716627.5U CN201920716627U CN209940905U CN 209940905 U CN209940905 U CN 209940905U CN 201920716627 U CN201920716627 U CN 201920716627U CN 209940905 U CN209940905 U CN 209940905U
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
An ascending pipe heat exchanger belongs to the technical field of coke oven waste heat recovery. The ascending tube heat exchanger comprises a cylinder, a first heat exchanger, a flange assembly and a sleeve, wherein the cylinder is a straight tube section of the ascending tube of the coke oven and a three-way steel shell, a high-temperature-resistant ceramic layer is arranged on the inner wall of the cylinder, heat-reflecting paint is arranged on the surface of the high-temperature-resistant ceramic layer, the first heat exchanger is arranged inside the cylinder, and the sleeve is arranged outside the steel shell of the straight tube section. The ascending pipe heat exchanger is formed by reforming an original coke oven ascending pipe, the ascending pipe heat exchanger is not coked, the resistance of a crude gas channel is not increased, the high-temperature sensible heat of the crude gas is recovered, the original coke oven ascending pipe is recycled, the cost is reduced, and the maximization of the economic benefit of a coking plant is realized.
Description
Technical Field
The utility model relates to a coke oven waste heat recovery technical field, in particular to a riser heat exchanger.
Background
The temperature of the raw gas in the production process of the coke oven is as high as 750-820 ℃, and the recovery of the sensible heat of the high-temperature raw gas is very important for improving the economic benefit of a coke-oven plant. The existing technology for utilizing the waste heat of the raw coke oven gas is to dismantle the original ascending pipe and replace the ascending pipe with a newly manufactured ascending pipe heat exchanger, so that the original ascending pipe has no purpose and can only be treated as waste, and most value is lost. In addition, the inner fire-resistant layer of the original ascending pipe is rough in surface and easy to coke, for a coke-oven plant, on the premise of ensuring that the ascending pipe is not coked and the resistance of the raw gas is not changed, sensible heat of the high-temperature raw gas is recovered, the value of the original ascending pipe is kept to the maximum extent, and the series of problems are solved, so that the economic benefit of the coke-oven plant is maximized, and the problem which needs to be solved urgently by the industry is solved.
Disclosure of Invention
In order to solve the coking plant and not only need retrieve high temperature raw coke oven gas sensible heat, but also the biggest value scheduling technical problem that remains original tedge, the utility model provides a tedge heat exchanger reforms original coke oven tedge into the tedge heat exchanger, and the tedge heat exchanger is not coking, raw coke oven gas passageway resistance does not increase, retrieves raw coke oven gas high temperature sensible heat, realizes original coke oven tedge and recycles, and reduce cost realizes the maximize of coking plant economic benefits.
In order to realize the purpose, the technical scheme of the utility model is that:
a rising pipe heat exchanger is formed by reforming a coke oven rising pipe according to a coke oven rising pipe reforming method and comprises a cylinder body, a first heat exchanger, a flange assembly and a sleeve; the heat exchanger is characterized in that the cylinder body is a straight pipe section of the coke oven ascending pipe and a three-way steel shell, a high-temperature-resistant ceramic layer is arranged on the inner wall of the cylinder body, heat reflection coating is arranged on the surface of the high-temperature-resistant ceramic layer, the first heat exchanger is arranged inside the cylinder body and connected with the cylinder body through a flange assembly, the bottom of the flange assembly is connected with the top of the cylinder body, the first heat exchanger is provided with a first heat exchanger inlet and a first heat exchanger outlet, the first heat exchanger inlet and the first heat exchanger outlet are both arranged on the flange assembly, the sleeve is arranged outside the steel shell of the straight pipe section, flanges at the upper end and the lower end of the steel shell of the straight pipe section and the sleeve form a water cooling.
The ascending pipe heat exchanger further comprises a second heat exchanger, the second heat exchanger is arranged inside the cylinder body, the second heat exchanger is provided with a second heat exchanger inlet and a second heat exchanger outlet, and the second heat exchanger inlet and the second heat exchanger outlet penetrate through the steel shell of the straight pipe section and are arranged outside the steel shell.
The first heat exchanger and the second heat exchanger respectively adopt a coil pipe heat exchanger, a tube nest heat exchanger, a U-shaped tube heat exchanger or a heat pipe heat exchanger.
When the first heat exchanger and the second heat exchanger respectively adopt a coil heat exchanger, a tubular heat exchanger or a U-shaped heat exchanger, the heat exchange tubes of the first heat exchanger and the second heat exchanger adopt single-layer heat exchange tubes or heat exchange tubes with protective sleeves arranged outside, wherein when the heat exchange tubes of the first heat exchanger and the second heat exchanger adopt single-layer heat exchange tubes, the outer surfaces of the single-layer heat exchange tubes are thermally sprayed with heat-conducting ceramic coatings or are subjected to surfacing of chromium carbide wear-resistant ceramics; when the heat exchange tubes of the first heat exchanger and the second heat exchanger adopt heat exchange tubes with protective sleeves arranged outside, heat conduction materials are arranged between the protective sleeves and the heat exchange tubes, and the outer surfaces of the protective sleeves are thermally sprayed with heat conduction ceramic coatings or surfacing chromium carbide wear-resistant ceramics.
The flange assembly comprises a metal cylinder, flanges are arranged at the upper end and the lower end of the metal cylinder, and the metal cylinder is connected with the top of the tee joint.
The high-temperature-resistant ceramic layer is cast by a zirconia heavy castable or a corundum-mullite refractory brick, the thickness of the high-temperature-resistant ceramic layer is 5-30 mm, the heat-reflecting coating is a 1800-DEG C-resistant heat-reflecting metallurgical coating, and the thickness of the heat-reflecting coating is 0.1-5 mm.
The coke oven ascending pipe transformation method comprises the following steps:
reforming a straight pipe section and a tee joint, dismantling refractory material layers on the inner walls of the straight pipe section and the tee joint, reserving steel shells of the straight pipe section and the tee joint, arranging high-temperature-resistant ceramic layers on the inner walls of the steel shells of the straight pipe section and the tee joint, and painting heat-reflecting paint on the surfaces of the high-temperature-resistant ceramic layers;
installing a first heat exchanger, installing the first heat exchanger in the reformed straight pipe section and the tee joint, connecting the first heat exchanger with the tee joint through a flange assembly, and arranging a first heat exchanger inlet and a first heat exchanger outlet at the flange assembly part;
the method comprises the following steps of arranging a water-cooling jacket, installing a sleeve outside a steel shell of a straight pipe section, forming the water-cooling jacket by the steel shell of the straight pipe section, flanges at the upper end and the lower end of the steel shell of the straight pipe section and the sleeve, and arranging a water-cooling jacket inlet and a water-cooling jacket outlet on the water-cooling jacket.
Before the step of installing the first heat exchanger, the method further comprises the following steps: and a second heat exchanger is arranged in the reformed straight pipe section, and an inlet of the second heat exchanger and an outlet of the second heat exchanger both penetrate through the steel shell of the straight pipe section and are arranged outside the steel shell.
After the step of dismantling the refractory material layers on the inner walls of the straight pipe section and the tee joint, the diameters of the steel shell of the straight pipe section and the tee joint are enlarged by 10-50%.
The method for expanding the diameters of the steel shell of the straight pipe section and the tee joint by 10-50% comprises the following steps: the method comprises the steps of detaching flanges at two ends of a straight pipe section, detaching flanges at two ends of a tee joint, detaching the tee joint and a bridge pipe connecting pipeline, splitting steel shells of the straight pipe section and the tee joint into 2 180-degree arc half pipes respectively, welding arc-shaped steel plates between the corresponding arc half pipes to enable the diameters of the steel shells of the straight pipe section and the tee joint to be enlarged by 10% -50%, welding ring-shaped steel plates to the detached flanges to enable the diameters of the flanges to be enlarged by 10% -50%, welding the tee joint with the original bridge pipe connecting pipeline after the diameters are enlarged, welding the tee joint with the flanges with the corresponding diameters enlarged, and welding the straight pipe section with the corresponding flanges with the diameters enlarged.
The utility model has the advantages that:
the utility model discloses a coke oven tedge transformation method and tedge heat exchanger transforms original coke oven tedge into tedge heat exchanger, retrieves raw coke oven gas high temperature sensible heat, realizes original coke oven tedge and recycles. The improved ascending tube heat exchanger is characterized in that a refractory material layer with the original thickness of 50-200 mm is removed, the refractory material layer is replaced by a high-temperature-resistant ceramic layer with the thickness of 5-30 mm, and a heat-reflecting coating is coated on the surface of the high-temperature-resistant ceramic layer, so that the diameter of a raw coke oven gas circulation channel is increased, coking is prevented, and normal production of a coke oven is guaranteed. The first heat exchanger and the second heat exchanger can effectively recover sensible heat of the raw coke oven gas, and waste heat utilization efficiency is improved.
Drawings
Fig. 1 is a schematic structural view of a rising pipe heat exchanger according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a first heat exchanger according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a second heat exchanger according to a first embodiment of the present invention;
fig. 4 is a schematic structural view of a water-cooling jacket according to a first embodiment of the present invention;
fig. 5 is a schematic structural view of a rising pipe heat exchanger according to a second embodiment of the present invention;
fig. 6 is a schematic structural diagram of a first heat exchanger according to a second embodiment of the present invention;
fig. 7 is a schematic structural diagram of a second heat exchanger according to a second embodiment of the present invention;
fig. 8 is a schematic structural view of a rising pipe heat exchanger according to a third embodiment of the present invention.
In the figure, 1-a first heat exchanger, 2-a flange assembly, 3-a sleeve, 4-a straight pipe section, 5-a tee joint, 6-a high-temperature-resistant ceramic layer, 7-heat reflection coating, 8-a second heat exchanger, 9-a metal cylinder, 10-a first heat exchanger inlet, 11-a first heat exchanger outlet, 12-a metal cylinder upper flange, 13-a metal cylinder lower flange, 14-a straight pipe section upper flange, 15-a straight pipe section lower flange, 16-a tee joint upper flange, 17-a tee joint lower flange, 18-a second heat exchanger inlet, 19-a second heat exchanger outlet, 20-a water cooling jacket inlet, 21-a water cooling jacket outlet and 22-a bridge pipe connecting pipeline.
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. In the description of the present invention, it should be noted that the terms "upper", "lower", "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 simplified description. The terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless expressly stated or limited otherwise, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," and may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In order to solve the problems existing in the prior art, as shown in fig. 1 to 8, the utility model provides a riser heat exchanger, which reforms the original coke oven riser, recovers the high-temperature sensible heat of the raw coke oven gas, realizes the reutilization of the original coke oven riser, improves the diameter of the raw coke oven gas circulation channel, prevents coking and ensures the normal production of the coke oven.
Example one
As shown in figure 1, the ascending pipe heat exchanger is formed by reforming a coke oven ascending pipe according to a reforming method of the coke oven ascending pipe, and comprises a cylinder body, a first heat exchanger 1, a second heat exchanger 8, a flange assembly 2 and a sleeve 3; the cylinder body is a steel shell of a straight pipe section 4 of the coke oven ascending pipe and a steel shell of a tee joint 3, an upper flange 14 of the straight pipe section is connected with a lower flange 17 of the tee joint, the inner wall of the cylinder body is provided with a high temperature resistant ceramic layer 6, the high temperature resistant ceramic layer 6 is cast by a zirconia heavy castable, the thickness of the high temperature resistant ceramic layer 6 is 5mm, the surface of the high temperature resistant ceramic layer 6 is coated with a heat reflection coating 7, the heat reflection coating 7 is made of a heat reflection metallurgical coating which is resistant to 1800 ℃, the thickness of the coated heat reflection coating 7 is 0.1mm, a second heat exchanger 8 is arranged in the cylinder body, an inlet 18 of the second heat exchanger and an outlet 19 of the second heat exchanger both penetrate through the steel shell of the straight pipe section 4 and are arranged outside the steel shell, the first heat exchanger 1 is arranged in the cylinder body, the first heat exchanger 1 is connected with the cylinder body through a flange component 2, the upper end of the metal cylinder 9 is provided with a metal cylinder upper flange 12, the lower end of the metal cylinder 9 is provided with a metal cylinder lower flange 13, the metal cylinder lower flange 13 is connected with a tee joint upper flange 16, a first heat exchanger inlet 10 and a first heat exchanger outlet 11 are arranged on the part of the flange component 2, the sleeve 3 is arranged outside a steel shell of the straight pipe section 4, as shown in figures 1 and 4, the sleeve 3, the steel shell of the straight pipe section 4, the straight pipe section upper flange 14 and the straight pipe section lower flange 15 form a water cooling jacket, a part of heat energy is recovered, the temperature of the furnace top is reduced, the water cooling jacket is provided with a water cooling jacket inlet 20 and a water cooling jacket outlet 21, the water cooling jacket outlet 21 is arranged on the upper part of the water cooling jacket, and the water cooling jacket. As shown in fig. 2, the first heat exchanger 1 is a U-shaped tube heat exchanger, the heat exchange tubes of the first heat exchanger 1 are single-layer heat exchange tubes, the wall thickness of the single-layer heat exchange tubes is greater than or equal to 5mm, and the outer surfaces of the single-layer heat exchange tubes are thermally sprayed with heat-conducting ceramic coatings to play roles in resisting wear and coking. As shown in fig. 3, the second heat exchanger 8 is a tubular heat exchanger, the heat exchange tubes of the second heat exchanger 8 are single-layer heat exchange tubes, the wall thickness of the single-layer heat exchange tubes is greater than or equal to 5mm, and chromium carbide wear-resistant ceramics are deposited on the outer surfaces of the single-layer heat exchange tubes, so that the effects of wear resistance and coking prevention are achieved.
The coke oven ascending pipe comprises a straight pipe section 4 with a refractory material layer on the inner wall and a tee joint 3 with a refractory material layer on the inner wall, and the method for modifying the coke oven ascending pipe comprises the following steps:
reforming the straight pipe section 4 and the tee joint 3, removing the refractory material layers on the inner walls of the straight pipe section 4 and the tee joint 3, keeping the steel shells of the straight pipe section 4 and the tee joint 3, namely keeping the original diameters of the steel shells of the straight pipe section 4 and the tee joint 3, arranging high-temperature-resistant ceramic layers 6 on the inner walls of the steel shells of the straight pipe section 4 and the tee joint 3, and brushing heat-reflecting coatings 7 on the surfaces of the high-temperature-resistant ceramic layers 6; installing a second heat exchanger 8, installing the second heat exchanger 8 in the reformed straight pipe section 4, wherein the second heat exchanger 8 is provided with a second heat exchanger inlet 18 and a second heat exchanger outlet 19, and the second heat exchanger inlet 18 and the second heat exchanger outlet 19 both penetrate through the steel shell of the straight pipe section 4 and are arranged outside the steel shell; installing a first heat exchanger 1, installing the first heat exchanger 1 in the reformed straight pipe section 4 and the tee joint 3, connecting the first heat exchanger 1 with the tee joint 3 through a flange assembly 2, wherein the first heat exchanger 1 is provided with a first heat exchanger inlet 10 and a first heat exchanger outlet 11, and the first heat exchanger inlet 10 and the first heat exchanger outlet 11 are both arranged on the flange assembly 2 part; the method is characterized in that a water-cooling jacket is arranged, a sleeve 3 is arranged outside a steel shell of the straight pipe section 4, the steel shell of the straight pipe section 4, flanges at the upper end and the lower end of the steel shell and the sleeve 3 form the water-cooling jacket, and a water-cooling jacket inlet 20 and a water-cooling jacket outlet 21 are sleeved on the water-cooling jacket.
Example two
As shown in FIG. 5, the ascending pipe heat exchanger is formed by reforming a coke oven ascending pipe according to a coke oven ascending pipe reforming method, and comprises a cylinder body, a first heat exchanger 1, a second heat exchanger 8, a flange assembly 2 and a sleeve 3; the cylinder body is a steel shell of a straight pipe section 4 and a steel shell of a tee joint 3 of the coke oven ascending pipe, the diameters of the steel shell of the straight pipe section 4 and the steel shell of the tee joint 3 are enlarged by 10 percent, an upper flange 14 of the straight pipe section is connected with a lower flange 17 of the tee joint, the inner wall of the cylinder body is provided with a high temperature resistant ceramic layer 6, the high temperature resistant ceramic layer 6 is made of corundum-mullite refractory brick, the thickness of the high temperature resistant ceramic layer 6 is 30mm, the surface of the high temperature resistant ceramic layer 6 is coated with a heat reflection coating 7, the heat reflection coating 7 is made of a heat reflection metallurgical coating with the temperature resistant of 1800 ℃, the thickness of the coated heat reflection coating 7 is 5mm, the second heat exchanger 8 is arranged inside the cylinder body, an inlet 18 of the second heat exchanger and an outlet 19 of the second heat exchanger both penetrate through the steel shell of the straight pipe section 4 and are arranged outside the steel shell, the bottom of the flange component 2 is connected with the top of the barrel, the flange component 2 comprises a metal barrel 9, the upper end of the metal barrel 9 is provided with a metal barrel upper flange 12, the lower end of the metal barrel 9 is provided with a metal barrel lower flange 13, the metal barrel lower flange 13 is connected with a tee joint upper flange 16, a first heat exchanger inlet 10 and a first heat exchanger outlet 11 are both arranged on the flange component 2, the sleeve 3 is arranged outside the steel shell of the straight pipe section 4, the sleeve 3, the steel shell of the straight pipe section 4, the straight pipe section upper flange 14 and the straight pipe section lower flange 15 form a water cooling jacket, a part of heat energy is recycled, the temperature of the furnace top is reduced, the water cooling jacket is provided with a water cooling jacket inlet 20 and a water cooling jacket outlet 21, the water cooling jacket outlet 21 is arranged on the upper portion of the water cooling jacket. As shown in fig. 6, the first heat exchanger 1 is a coil heat exchanger, the heat exchange tubes of the first heat exchanger 1 are single-layer heat exchange tubes, the wall thickness of the single-layer heat exchange tubes is greater than or equal to 5mm, and the outer surfaces of the single-layer heat exchange tubes are thermally sprayed with heat-conducting ceramic coatings, so that the heat-conducting ceramic coatings play roles in resisting wear and preventing coking. As shown in fig. 7, the second heat exchanger 8 is a coil heat exchanger, the heat exchange tubes of the second heat exchanger 8 are single-layer heat exchange tubes, the wall thickness of the single-layer heat exchange tubes is greater than or equal to 5mm, and the outer surfaces of the single-layer heat exchange tubes are thermally sprayed with heat-conducting ceramic coatings, so that the effects of wear resistance and coking prevention are achieved.
The coke oven ascending pipe comprises a straight pipe section 4 with a refractory material layer on the inner wall and a tee joint 3 with a refractory material layer on the inner wall, and the method for modifying the coke oven ascending pipe comprises the following steps:
reforming the straight pipe section 4 and the tee joint 3, removing the refractory material layers on the inner walls of the straight pipe section 4 and the tee joint 3, and keeping the steel shells of the straight pipe section 4 and the tee joint 3; the diameter of the steel shell of the straight pipe section 4 and the tee joint 3 is enlarged by 10 percent, and the method is realized by the following steps: the straight pipe section upper flange 14 and the straight pipe section lower flange 15 of the straight pipe section 4 are disassembled, the tee joint upper flange 16 and the tee joint lower flange 17 of the tee joint 3 are disassembled, the tee joint 3 and the bridge pipe connecting pipeline 22 are disassembled, steel shells of the straight pipe section 4 and the tee joint 3 are respectively split into 2 180-degree arc-shaped half pipes, a circular line with the diameter expanded by 10 percent is drawn on the ground, the 2 half pipes are vertically arranged on the circular line with the diameter expanded, the position size of the connection between the tee joint 3 and the bridge pipe connecting pipeline 22 is ensured to be unchanged, arc-shaped steel plates are welded between the corresponding arc-shaped half pipes, the diameter of the straight pipe section 4 and the diameter of the steel shell of the tee joint 3 are respectively expanded by 10 percent, the disassembled straight pipe section upper flange 14, the straight pipe section lower flange 15, the tee joint upper flange 16 and the tee joint lower flange 17 are respectively welded with circular ring-shaped steel plates, the inner circumference of each circular-shaped steel plate is welded with the outer circumference, welding the tee joint 3 with the enlarged diameter with an original bridge pipe connecting pipeline 22, welding the tee joint 3 with the enlarged diameter with an upper tee flange 16 and a lower tee flange 17, and welding the straight pipe section 4 with the enlarged diameter with an upper straight pipe section flange 14 and a lower straight pipe section flange 15 to finish installation; installing a second heat exchanger 8, installing the second heat exchanger 8 in the reformed straight pipe section 4, and enabling an inlet 18 and an outlet 19 of the second heat exchanger to penetrate through the steel shell of the straight pipe section 4 and be arranged outside the steel shell; installing a first heat exchanger 1, installing the first heat exchanger 1 in the reformed straight pipe section 4 and the tee joint 3, connecting the first heat exchanger 1 with the tee joint 3 through a flange assembly 2, and arranging a first heat exchanger inlet 10 and a first heat exchanger outlet 11 on the flange assembly 2; the method is characterized in that a water-cooling jacket is arranged, a sleeve 3 is arranged outside a steel shell of the straight pipe section 4, the steel shell of the straight pipe section 4, flanges at the upper end and the lower end of the steel shell and the sleeve 3 form the water-cooling jacket, and a water-cooling jacket inlet 20 and a water-cooling jacket outlet 21 are sleeved on the water-cooling jacket.
EXAMPLE III
As shown in FIG. 8, the ascending pipe heat exchanger is formed by reforming a coke oven ascending pipe according to a coke oven ascending pipe reforming method, and comprises a cylinder body, a first heat exchanger 1, a flange assembly 2 and a sleeve 3; the cylinder body is a steel shell of a straight pipe section 4 of the coke oven ascending pipe and a steel shell of a tee joint 3, an upper flange 14 of the straight pipe section is connected with a lower flange 17 of the tee joint, the inner wall of the cylinder body is provided with a high temperature resistant ceramic layer 6, the high temperature resistant ceramic layer 6 is cast by a zirconia heavy castable, the thickness of the high temperature resistant ceramic layer 6 is 10mm, the surface of the high temperature resistant ceramic layer 6 is coated with a heat reflection coating 7, the heat reflection coating 7 is a heat reflection metallurgical coating with the temperature resistant of 1800 ℃, the thickness of the coated heat reflection coating 7 is 2mm, the first heat exchanger 1 is arranged in the cylinder body, the first heat exchanger 1 is connected with the cylinder body through a flange component 2, the bottom of the flange component 2 is connected with the top of the cylinder body, the flange component 2 comprises a metal cylinder 9, the upper flange 12 of the metal cylinder is arranged at the upper end of the metal cylinder 9, the lower flange 13, the first heat exchanger inlet 10 and the first heat exchanger outlet 11 are both arranged on the flange component 2, the sleeve 3 is arranged outside the steel shell of the straight pipe section 4, the sleeve 3, the steel shell of the straight pipe section 4, the straight pipe section upper flange 14 and the straight pipe section lower flange 15 form a water cooling jacket, a part of heat energy is recovered, the temperature of the furnace top is reduced, the water cooling jacket is provided with a water cooling jacket inlet 20 and a water cooling jacket outlet 21, the water cooling jacket outlet 21 is arranged on the upper portion of the water cooling jacket, the water cooling jacket inlet 20 is arranged on the lower portion of the water cooling jacket, the first heat exchanger 1 adopts a heat pipe heat exchanger, and the built-in heat pipe group is utilized to recover the sensible heat.
The coke oven ascending pipe comprises a straight pipe section 4 with a refractory material layer on the inner wall and a tee joint 3 with a refractory material layer on the inner wall, and the method for modifying the coke oven ascending pipe comprises the following steps:
reforming the straight pipe section 4 and the tee joint 3, removing the refractory material layers on the inner walls of the straight pipe section 4 and the tee joint 3, keeping the steel shells of the straight pipe section 4 and the tee joint 3, namely keeping the original diameters of the steel shells of the straight pipe section 4 and the tee joint 3, arranging high-temperature-resistant ceramic layers 6 on the inner walls of the steel shells of the straight pipe section 4 and the tee joint 3, and brushing heat-reflecting coatings 7 on the surfaces of the high-temperature-resistant ceramic layers 6; installing a first heat exchanger 1, installing the first heat exchanger 1 in the reformed straight pipe section 4 and the tee joint 3, connecting the first heat exchanger 1 with the tee joint 3 through a flange assembly 2, and arranging a first heat exchanger inlet 10 and a first heat exchanger outlet 11 on the flange assembly 2; the method is characterized in that a water-cooling jacket is arranged, a sleeve 3 is arranged outside a steel shell of the straight pipe section 4, the steel shell of the straight pipe section 4, flanges at the upper end and the lower end of the steel shell and the sleeve 3 form the water-cooling jacket, and a water-cooling jacket inlet 20 and a water-cooling jacket outlet 21 are sleeved on the water-cooling jacket.
The utility model discloses in, coke oven tedge is prior art tedge of operation coke oven, including straight tube section 4 and tee bend 3, the inner wall of straight tube section 4 and tee bend 3 is equallyd divide and does not is provided with the refractory material layer, demolishs the refractory material layer of straight tube section 4 and tee bend 3 inner wall is whole, and the thickness of refractory material layer is 50 ~ 200mm among the prior art. In the same ascending pipe heat exchanger, the first heat exchanger 1 and the second heat exchanger 8 respectively adopt a coil pipe heat exchanger, a tube type heat exchanger, a U-shaped pipe heat exchanger or a heat pipe heat exchanger in the prior art, and the first heat exchanger 1 and the second heat exchanger 8 can adopt the same type of heat exchanger or different types of heat exchangers.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (6)
1. A rising pipe heat exchanger is formed by reforming a rising pipe of a coke oven and is characterized by comprising a cylinder, a first heat exchanger, a flange assembly and a sleeve; the heat exchanger is characterized in that the cylinder body is a straight pipe section of the coke oven ascending pipe and a three-way steel shell, a high-temperature-resistant ceramic layer is arranged on the inner wall of the cylinder body, heat reflection coating is arranged on the surface of the high-temperature-resistant ceramic layer, the first heat exchanger is arranged inside the cylinder body and connected with the cylinder body through a flange assembly, the bottom of the flange assembly is connected with the top of the cylinder body, the first heat exchanger is provided with a first heat exchanger inlet and a first heat exchanger outlet, the first heat exchanger inlet and the first heat exchanger outlet are both arranged on the flange assembly, the sleeve is arranged outside the steel shell of the straight pipe section, flanges at the upper end and the lower end of the steel shell of the straight pipe section and the sleeve form a water cooling.
2. A riser heat exchanger as claimed in claim 1, further comprising a second heat exchanger disposed within the barrel, the second heat exchanger having a second heat exchanger inlet and a second heat exchanger outlet, both the second heat exchanger inlet and the second heat exchanger outlet being disposed externally of the straight tube section through the steel shell thereof.
3. A riser heat exchanger as claimed in claim 2, wherein the first and second heat exchangers each employ a coil heat exchanger, a tube-in-tube heat exchanger, a U-tube heat exchanger or a heat pipe heat exchanger, respectively.
4. The ascending tube heat exchanger according to claim 3, wherein when the first heat exchanger and the second heat exchanger are respectively a coil heat exchanger, a tube-in-tube heat exchanger or a U-shaped heat exchanger, the heat exchange tubes of the first heat exchanger and the second heat exchanger are single-layer heat exchange tubes or heat exchange tubes with protective sleeves arranged outside, and when the heat exchange tubes of the first heat exchanger and the second heat exchanger are single-layer heat exchange tubes, the outer surfaces of the single-layer heat exchange tubes are thermally sprayed with heat-conducting ceramic coatings or are subjected to surfacing chromium carbide wear-resistant ceramics; when the heat exchange tubes of the first heat exchanger and the second heat exchanger adopt heat exchange tubes with protective sleeves arranged outside, heat conduction materials are arranged between the protective sleeves and the heat exchange tubes, and the outer surfaces of the protective sleeves are thermally sprayed with heat conduction ceramic coatings or surfacing chromium carbide wear-resistant ceramics.
5. The riser heat exchanger of claim 1, wherein the flange assembly comprises a metal cylinder, flanges are arranged at both the upper end and the lower end of the metal cylinder, and the metal cylinder is connected with the top of the tee.
6. The ascending tube heat exchanger according to claim 1, wherein the high-temperature resistant ceramic layer is made of zirconia heavy castable casting or corundum-mullite refractory brick, the thickness of the high-temperature resistant ceramic layer is 5-30 mm, the heat-reflecting coating is made of 1800 ℃ resistant heat-reflecting metallurgical coating, and the thickness of the heat-reflecting coating is 0.1-5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920716627.5U CN209940905U (en) | 2019-05-17 | 2019-05-17 | Ascending pipe heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920716627.5U CN209940905U (en) | 2019-05-17 | 2019-05-17 | Ascending pipe heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209940905U true CN209940905U (en) | 2020-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920716627.5U Expired - Fee Related CN209940905U (en) | 2019-05-17 | 2019-05-17 | Ascending pipe heat exchanger |
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| CN (1) | CN209940905U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110079340A (en) * | 2019-05-17 | 2019-08-02 | 石欣 | A kind of coke oven coke oven uprising tube remodeling method and rise heat exchange of heat pipe |
-
2019
- 2019-05-17 CN CN201920716627.5U patent/CN209940905U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110079340A (en) * | 2019-05-17 | 2019-08-02 | 石欣 | A kind of coke oven coke oven uprising tube remodeling method and rise heat exchange of heat pipe |
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