CN218455232U - Novel anti-coking fuel oil gas organic heat carrier furnace - Google Patents
Novel anti-coking fuel oil gas organic heat carrier furnace Download PDFInfo
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- CN218455232U CN218455232U CN202222743340.6U CN202222743340U CN218455232U CN 218455232 U CN218455232 U CN 218455232U CN 202222743340 U CN202222743340 U CN 202222743340U CN 218455232 U CN218455232 U CN 218455232U
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Abstract
The utility model discloses a novel anti-coking fuel gas organic heat carrier furnace, which comprises a shell, a pressed part and a bottom support; the shell consists of an outer top cover, an inner top cover, a smoke outlet, an outer cylinder, an inner cylinder heat-insulating layer and an inner cylinder; the compressed part consists of a top convergence redistribution header, a top coil pipe, an outer ring coil pipe, an inner ring coil pipe, a bottom inlet header and a bottom outlet header, the top convergence redistribution header is provided with a medium exhaust interface, the inner wall of the top coil pipe, the upper outer ring coil pipe and the inner wall of the inner ring coil pipe form a radiation heat exchange chamber, the inner wall of the outer ring coil pipe and the outer side of the inner ring coil pipe form a first convection heat exchange chamber, and the outer side of the outer ring coil pipe and the inner wall of the inner cylinder form a second convection heat exchange chamber; the bottom support is composed of a support steel structure, a bottom combustor and a bottom fireproof heat preservation layer. The utility model discloses the temperature of heat carrier medium in the furnace coil pipe of can evening prevents that high temperature radiation section furnace pipe from coking, and the long periodic operation of heat carrier furnace is guaranteed in extension boiler tube life-span.
Description
Technical Field
The utility model belongs to the technical field of organic heat carrier heater heating technique and specifically relates to a novel anti-coking fuel gas organic heat carrier heater.
Background
The organic heat carrier furnace is a special industrial furnace which takes coal, oil, gas and electricity as fuels, takes heat conduction oil as a heat carrier, utilizes a circulating oil pump to force liquid phase circulation, conveys heat energy to heat exchange equipment, and then returns to a heating furnace for reheating, and is widely applied to the industrial fields of petroleum, chemical industry, pharmacy, textile printing and dyeing, light industry, building materials and the like. The organic heat carrier furnace is energy-consuming special equipment, explosion and fire accidents frequently occur in industrial application, and the development of a novel low-carbon green organic heat carrier furnace is not slow along with the implementation of a national double-carbon strategy.
At present, fuel oil gas organic heat carrier furnaces using clean combustible gas such as natural gas, coke oven gas and the like as fuel are more and more favored by people. However, in the conventional fuel oil gas organic heat carrier furnace, the inner coil and the outer coil are of a parallel structure, and the organic heat carrier heating furnace of the parallel coil structure is insufficient in heat conduction oil flow and uneven in distribution, so that the organic heat carrier in the tube is denatured, coked and the heat exchange efficiency is reduced, a tube explosion accident is caused when the heat conduction oil flow is serious, and the long-period safe operation of the organic heat carrier furnace is greatly influenced.
Therefore, the development of a novel anti-coking fuel oil gas organic heat carrier furnace which has the advantages that the inner ring coil and the outer ring coil are heated uniformly, the coking in the tubes is prevented, and the service efficiency of the heating surface can be improved is urgently needed.
Disclosure of Invention
The utility model aims to solve the technical problem that prior art's defect is overcome, a novel prevent coking fuel gas organic heat carrier furnace is provided, it can be even furnace coil pipe in the temperature of hot carrier medium, prevent the boiler tube coking of high temperature radiation section, the extension boiler tube life-span guarantees the long period run of heat carrier furnace.
In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a novel prevent coking fuel gas organic heat carrier stove which the characteristic includes the casing, receives part and bottom support, wherein:
the shell consists of an outer top cover, an inner top cover, a smoke outlet, an outer cylinder, an inner cylinder heat-insulating layer and an inner cylinder;
the pressure-receiving component consists of a top confluence redistribution header, a top coil pipe, an outer ring coil pipe, an inner ring coil pipe, a bottom inlet header and a bottom outlet header;
the top convergence redistribution header is provided with a medium exhaust interface which can timely exhaust non-condensable gas brought by the organic heat carrier medium of the furnace tube, so that gas blockage in the furnace tube, overheating and local overtemperature point are effectively prevented;
the inner wall of the top coil pipe, the outer coil pipe above the top coil pipe and the inner wall of the inner coil pipe form a radiation heat exchange chamber, the inner wall of the outer coil pipe and the outer side of the inner coil pipe form a first convection heat exchange chamber, and the outer side of the outer coil pipe and the inner wall of the inner cylinder form a second convection heat exchange chamber;
the outer ring coil pipe, the inner ring coil pipe and the top coil pipe are formed by coiling furnace tubes and are connected in series through the top convergence redistribution header, the inner ring coil pipe and the outer ring coil pipe and the top coil pipe which are connected in series can be different in number and diameter of the furnace tubes, and the inner ring coil pipe, the outer ring coil pipe and the top coil pipe are connected in series with the top convergence redistribution header to meet the requirements of different heat exchange and temperature equalization processes.
The organic heat carrier medium firstly enters a bottom inlet header, then sequentially flows through an inner ring coil pipe, a top convergence redistribution header, a top coil pipe and an outer ring coil pipe, and finally is converged to a bottom outlet header, wherein the top convergence redistribution header is not an outlet of the organic heat carrier but only a convergence distribution header of the inner ring coil pipe, the outer ring coil pipe and the top coil pipe which are connected in series; the top confluence redistribution header not only has redistribution function, but also has mixing and temperature equalizing function so as to ensure the temperature uniformity of heat carrier media in the inner coil pipe, the outer coil pipe and the top coil pipe;
when the organic heat carrier furnace normally operates, high-temperature flue gas generated by flame combustion of the bottom burner is subjected to radiation convection heat exchange in a radiation heat exchange chamber formed by the inner wall of the top coil, the upper outer coil and the inner wall of the inner coil, enters a first convection heat exchange chamber formed by the inner wall of the outer coil and the outer side of the inner coil for convection heat exchange, then enters a second convection heat exchange chamber formed by the outer side of the outer coil and the inner wall of the inner cylinder for convection heat exchange, and finally is discharged out of the furnace body from a flue gas outlet. The flowing direction of the flue gas and the heat carrier medium in the tube is firstly downstream radiation convection heat exchange in the radiation heat exchange chamber of the hearth, then downstream convection heat exchange in the first convection heat exchange chamber and finally countercurrent convection heat exchange in the second convection heat exchange chamber, the flowing arrangement of the high-temperature flue gas and the low-temperature heat carrier medium heated in the tube can fully ensure the heat exchange efficiency, can avoid carbon deposition and coking caused by overheating of the medium in the tube, and effectively prevent the occurrence of serious accidents such as tube explosion and the like caused by local overheating of a furnace tube and damage to mechanical strength.
The bottom support is composed of a support steel structure, a bottom combustor and a bottom fireproof heat preservation layer.
Furthermore, the bottom of the first convection heat exchange chamber is communicated with the bottom of the second convection heat exchange chamber, the second convection heat exchange chamber is communicated with the flue gas outlet, so that the retention time of the flue gas in the hearth is prolonged, the heat of the flue gas is fully absorbed and utilized by media in the pipe, and the heat efficiency of the heating furnace is improved.
Furthermore, the inner top cover is of a high-temperature ceramic cotton structure, so that on one hand, heat is effectively absorbed by a heat carrier medium in the top coil pipe of the furnace top, the heating surface of the furnace top is effectively utilized, meanwhile, thermal stress damage caused by the flame of the furnace top structure made of steel materials can be avoided, and the service life of the heating furnace is prolonged.
Furthermore, the bottom combustor is located at the center of the support steel structure, and bottom fire-resistant heat-insulating layers are arranged on the periphery of the bottom combustor.
The utility model has the advantages that: (1) The outer ring coil pipe, the inner ring coil pipe and the top coil pipe are coiled by furnace pipes and are connected in series through the top convergence redistribution header, so that a low-temperature organic heat carrier medium firstly enters the bottom inlet header, then flows through the inner ring coil pipe, the top convergence redistribution header, the top coil pipe and the outer ring coil pipe firstly and then is converged to the bottom outlet header, the coil pipes in the furnace can be heated uniformly, the use efficiency of a heating surface is improved, and meanwhile, the number and the pipe diameter of the furnace pipes of the inner ring coil pipe, the outer ring coil pipe and the top coil pipe which are connected in series can be different, so that different requirements can be met, and the requirements of different heat exchange and uniform temperature processes can be met; (2) The pressure-bearing part is provided with a top convergence redistribution header and a medium exhaust interface, so that non-condensable gas brought by the organic heat carrier medium of the furnace tube can be exhausted in time, and gas blockage, overheating and local over-temperature points in the furnace tube can be effectively prevented; (3) The novel inner top cover high-temperature ceramic cotton structure has the advantages that the smoke heat is efficiently absorbed by the medium in the furnace tube, the smoke temperature of the smoke outlet of the furnace body is effectively reduced, and the daily maintenance is convenient.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a schematic structural diagram of a novel anti-coking fuel gas organic heat carrier furnace of the present invention;
FIG. 2 is a top view of the novel anti-coking fuel oil gas organic heat carrier furnace of the present invention;
fig. 3 is a cross-sectional view of the novel anti-coking fuel gas organic heat carrier furnace of the utility model.
In the figure: 1. the heat exchanger comprises a shell, 2, a pressure part, 3, a bottom support, 4, an outer top cover, 5, an inner top cover, 6, a flue gas outlet, 7, an outer cylinder, 8, an inner cylinder heat-insulating layer, 9, an inner cylinder, 10, a top confluence redistribution header, 11, a top coil, 12, an outer coil, 13, an inner coil, 14, a bottom inlet header, 15, a bottom outlet header, 16, a medium exhaust interface, 17, a radiation heat exchange chamber, 18, a first convection heat exchange chamber, 19, a second convection heat exchange chamber, 20, a furnace tube, 21, a support steel structure, 22, a bottom burner and 23, a bottom fire-resistant heat-insulating layer.
Detailed Description
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.
As shown in fig. 1 to fig. 3, a novel anti-coking fuel oil gas organic heat carrier furnace is characterized by comprising a shell 1, a pressure part 2 and a bottom support 3, wherein:
the shell 1 consists of an outer top cover 4, an inner top cover 5, a flue gas outlet 6, an outer cylinder 7, an inner cylinder heat-insulating layer 8 and an inner cylinder 9;
the pressure receiving component 2 consists of a top confluence redistribution header 10, a top coil pipe 11, an outer ring coil pipe 12, an inner ring coil pipe 13, a bottom inlet header 14 and a bottom outlet header 15;
the top convergence redistribution header 10 is provided with a medium exhaust interface 16;
the inner wall of the top coil 11, the outer ring coil 12 above the top coil and the inner wall of the inner ring coil 13 form a radiation heat exchange chamber 17, the inner wall of the outer ring coil 12 and the outer side of the inner ring coil 13 form a first convection heat exchange chamber 18, and the outer side of the outer ring coil 12 and the inner wall of the inner cylinder 9 form a second convection heat exchange chamber 19;
the outer ring coil pipe 12, the inner ring coil pipe 13 and the top coil pipe 11 are formed by coiling furnace pipes 20 and are connected in series through a top convergence redistribution header 10, the number and the pipe diameter of the inner ring coil pipe 13 and the furnace pipes 20 of the outer ring coil pipe 12 and the top coil pipe 11 which are connected in series can be different, and the inner ring coil pipe and the furnace pipes are connected in series through the top convergence redistribution header 10;
the organic heat carrier medium firstly enters a bottom inlet header 14, then sequentially flows through an inner ring coil 13, a top convergence redistribution header 10, a top coil 11 and an outer ring coil 12, and finally is converged to a bottom outlet header 15, wherein the top convergence redistribution header 10 is not an outlet of the organic heat carrier but only a convergence distribution header of the inner ring coil 13 and the outer ring coil 12 and the top coil 11 which are connected in series;
when the organic heat carrier furnace normally operates, high-temperature flue gas generated by flame combustion of the bottom burner 22 enters a first convection heat exchange chamber 18 formed by the inner wall of the outer coil 12 and the outer side of the inner coil 13 after radiation and convection heat exchange in a radiation heat exchange chamber 17 formed by the inner wall of the top coil 11, the upper part of the outer coil 12 and the inner wall of the inner coil 13, enters a second convection heat exchange chamber 19 formed by the outer side of the outer coil 12 and the inner wall of the inner cylinder 9 after convection heat exchange, and is discharged out of the furnace body through a flue gas outlet 6;
the bottom support 3 is composed of a support steel structure 21, a bottom burner 22 and a bottom fireproof heat preservation layer 23.
The bottom of the first convection heat exchange chamber 18 is communicated with the bottom of the second convection heat exchange chamber 19, and the second convection heat exchange chamber 19 is communicated with the flue gas outlet 6.
The inner top cover 5 is of a high-temperature ceramic cotton structure.
The bottom burner 22 is positioned at the center of the support steel structure 21, and bottom fire-resistant heat-insulating layers 23 are arranged on the periphery of the support steel structure.
The working principle of the utility model is as follows:
when the novel anti-coking fuel oil gas organic heat carrier furnace operates, the organic heat carrier medium firstly enters the bottom inlet header 14, then sequentially flows through the inner coil 13, the top convergence redistribution header 10, the top coil 11 and the outer coil 12, and finally is collected to the bottom outlet header 15 to enter a pipeline of a heat supply circulation system.
When the novel anti-coking fuel gas organic heat carrier furnace is in a heat supply state, high-temperature flue gas generated during combustion of the bottom burner 22 flows through the radiation heat exchange chamber 17, after the high-temperature flue gas is subjected to radiation convection heat exchange with the outer ring coil 12 and the top coil 11 on the inner side and the upper side of the inner ring coil 13 of the radiation heat exchange chamber 17, the high-temperature flue gas enters the first convection heat exchange chamber 18 formed by the inner ring coil 13 and the outer ring coil 12, after the high-temperature flue gas enters the second convection heat exchange chamber 19 formed by the outer side of the outer ring coil 12 and the inner wall of the inner barrel 9, the high-temperature flue gas finally flows out of the novel anti-coking fuel gas organic heat carrier furnace from the flue gas outlet 6 and enters the system waste heat recovery device.
The utility model discloses a novel prevent coking fuel gas organic heat carrier stove's outer lane coil pipe 12, inner circle coil pipe 13, top coil pipe 11 is coiled by boiler tube 20 and is established ties together through top collection flow redistribution header 10, make low temperature organic heat carrier medium get into bottom import header 14 at first, then flow through inner circle coil pipe 13 earlier, top collection flow redistribution header 10, top coil pipe 11, outer lane coil pipe 12 later converge to bottom export header, can make the interior coil pipe 20 of stove be heated evenly, improve the availability factor of heating surface, inner circle coil pipe 13 and the outer lane coil pipe 12 and the boiler tube 20 of top coil pipe 11 that establish ties together are counted and the pipe diameter can be different simultaneously, can adapt to different requirements;
the pressed part 2 is provided with a top convergence redistribution header 10 and a medium exhaust interface 16, so that the problem of air blockage of the organic heat carrier furnace with low inlet and low outlet is effectively solved;
the novel high-temperature ceramic cotton structure of the inner top cover 5 effectively reduces the smoke temperature of the smoke outlet of the furnace body and is convenient for daily maintenance.
The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (4)
1. The utility model provides a novel prevent coking fuel gas organic heat carrier stove which characterized in that includes casing (1), receives part (2) and bottom support (3), wherein:
the shell (1) consists of an outer top cover (4), an inner top cover (5), a flue gas outlet (6), an outer cylinder (7), an inner cylinder heat-insulating layer (8) and an inner cylinder (9);
the pressure receiving component (2) consists of a top confluence redistribution header (10), a top coil pipe (11), an outer ring coil pipe (12), an inner ring coil pipe (13), a bottom inlet header (14) and a bottom outlet header (15);
the top convergence redistribution header (10) is provided with a medium exhaust interface (16);
the inner wall of the top coil (11), the outer ring coil (12) above the top coil and the inner wall of the inner ring coil (13) form a radiation heat exchange chamber (17), the inner wall of the outer ring coil (12) and the outer side of the inner ring coil (13) form a first convection heat exchange chamber (18), and the outer side of the outer ring coil (12) and the inner wall of the inner cylinder (9) form a second convection heat exchange chamber (19);
the outer ring coil pipe (12), the inner ring coil pipe (13) and the top coil pipe (11) are formed by coiling furnace pipes (20) and are connected in series through a top convergence redistribution header (10), the number and the pipe diameter of the inner ring coil pipe (13) and the furnace pipes (20) of the outer ring coil pipe (12) and the top coil pipe (11) which are connected in series can be different, and the inner ring coil pipe, the outer ring coil pipe (12) and the top coil pipe (11) are connected in series with the top convergence redistribution header (10);
the organic heat carrier medium firstly enters a bottom inlet header (14), then sequentially flows through an inner ring coil pipe (13), a top convergence redistribution header (10), a top coil pipe (11) and an outer ring coil pipe (12) and finally converges to a bottom outlet header (15), wherein the top convergence redistribution header (10) is not an outlet of the organic heat carrier but only a convergence distribution header of the inner ring coil pipe (13) and the outer ring coil pipe (12) and the top coil pipe (11) which are connected together in series;
when the organic heat carrier furnace normally operates, high-temperature flue gas generated by flame combustion of a bottom combustor (22) enters a first convection heat exchange chamber (18) formed by the inner wall of an outer coil (12) and the outer side of an inner coil (13) after radiation convection heat exchange in a radiation heat exchange chamber (17) formed by the inner wall of a top coil (11), an upper outer coil (12) and the inner wall of an inner coil (13), then enters a second convection heat exchange chamber (19) formed by the outer side of the outer coil (12) and the inner wall of an inner cylinder (9) after convection heat exchange, and finally is discharged out of the furnace body from a flue gas outlet (6);
the bottom support (3) is composed of a support steel structure (21), a bottom combustor (22) and a bottom fireproof heat-insulating layer (23).
2. The novel anti-coking fuel oil gas organic heat carrier furnace as claimed in claim 1, characterized in that the bottom of the first convection heat exchange chamber (18) is communicated with the bottom of the second convection heat exchange chamber (19), and the second convection heat exchange chamber (19) is communicated with the flue gas outlet (6).
3. The novel anti-coking fuel oil gas organic heat carrier furnace according to claim 1, characterized in that the inner top cover (5) is of a high-temperature ceramic wool structure.
4. The novel anti-coking fuel oil gas organic heat carrier furnace is characterized in that the bottom burner (22) is positioned at the center of the support steel structure (21), and bottom fire-resistant heat-insulating layers (23) are arranged on the periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222743340.6U CN218455232U (en) | 2022-10-19 | 2022-10-19 | Novel anti-coking fuel oil gas organic heat carrier furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222743340.6U CN218455232U (en) | 2022-10-19 | 2022-10-19 | Novel anti-coking fuel oil gas organic heat carrier furnace |
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| Publication Number | Publication Date |
|---|---|
| CN218455232U true CN218455232U (en) | 2023-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222743340.6U Active CN218455232U (en) | 2022-10-19 | 2022-10-19 | Novel anti-coking fuel oil gas organic heat carrier furnace |
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| CN (1) | CN218455232U (en) |
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- 2022-10-19 CN CN202222743340.6U patent/CN218455232U/en active Active
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Address after: No. 18 Chuangye Road, Xinbei District, Changzhou City, Jiangsu Province, 213034 Patentee after: Changzhou Energy Equipment Co.,Ltd. Patentee after: CHANGZHOU University Address before: No. 18 Chuangye Road, Environmental Protection Industrial Park, Xinbei District, Changzhou City, Jiangsu Province, 213034 Patentee before: CHANGZHOU ENERGY ENGINEERING Co.,Ltd. Patentee before: CHANGZHOU University |