Dual-chamber combustion gasifier
By designing a dual-furnace combustion gasifier, and utilizing spiral baffles and multi-layer flue structure to extend the residence time of high-temperature flue gas, the problem of low thermal energy utilization rate of existing water bath gasifiers has been solved, achieving more efficient heat utilization and heating efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI TRIUMPH GASES EQUIP CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-07-03
AI Technical Summary
The existing water bath gasifier has a low utilization rate of high-temperature flue gas thermal energy, which affects the heating efficiency.
A dual-furnace combustion gasifier is designed, which adopts a spiral-extended baffle and a multi-layer flue structure to extend the residence time of high-temperature flue gas in the furnace and adapts to the heat exchange requirements of different low-temperature media through multiple heating components.
It improves heat utilization and heat exchange efficiency, enhances equipment reliability, and saves fuel.
Smart Images
Figure CN224454914U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gasifier technology, specifically a dual-furnace combustion gasifier. Background Technology
[0002] A vaporizer is a device used to heat liquid gas and turn it into gas. Simply put, cold liquid gas turns into gas after passing through a vaporizer. The heating can be indirect (steam-heated vaporizer, hot water bath vaporizer, natural ventilation air bath vaporizer, forced ventilation vaporizer, electric heating vaporizer, solid heat conduction vaporizer, or heat transfer fluid) or direct (hot gas or submerged combustion).
[0003] In the use of a water bath gasifier, high-temperature flue gas is generated in the furnace through combustion by a burner, which raises the water temperature in the heat exchange chamber above the furnace and exchanges heat with the low-temperature medium in the heat exchange tube. Because the high-temperature flue gas is directly discharged from the gasifier after passing through the furnace, the thermal energy utilization rate of the high-temperature flue gas is not high, which affects the heating efficiency.
[0004] In view of this, there is an urgent need for a dual-furnace combustion gasifier. Summary of the Invention
[0005] To address the problems existing in the prior art, this utility model solves the problem using the following technical structure.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A dual-furnace combustion gasifier includes: a shell, a heat exchange chamber provided inside the shell, a heating component and a plurality of heat exchange tubes provided inside the heat exchange chamber, one end of the plurality of heat exchange tubes being a liquid inlet and the other end being a gas outlet;
[0008] The heating assembly includes a burner, a furnace, an exhaust pipe, a first baffle plate, and several flue pipes. The burner is located at one end of the furnace, and the several flue pipes are located above the furnace and connected to the end of the furnace away from the burner. One end of the exhaust pipe extends to the outside of the housing to discharge the flue gas from the several flue pipes. The first baffle plate is located at the end of the furnace away from the burner and extends spirally from the end away from the burner to the end closer to the burner.
[0009] The plurality of flue pipes include a plurality of first flue pipes and a plurality of second flue pipes, the plurality of second flue pipes being disposed above the plurality of first flue pipes, a first transition chamber being disposed at the end of the furnace furthest from the burner, the plurality of first flue pipes communicating with the first transition chamber, a second transition chamber being disposed at the end of the plurality of first flue pipes furthest from the first transition chamber, the plurality of first flue pipes communicating with the second transition chamber, and the plurality of second flue pipes communicating with the second transition chamber.
[0010] The exhaust pipe is connected to one end of one or more of the second exhaust pipes away from the second transition chamber.
[0011] Both the first and second smoke pipes are provided with a second baffle plate. The second baffle plate extends in a spiral shape, and the extension direction of the second baffle plate is consistent with the axial direction of the first smoke pipe or the axial direction of the second smoke pipe.
[0012] There are two heating components, which are arranged side by side.
[0013] The heat exchange tube is S-shaped.
[0014] A diversion pipe is provided on the shell, one end of which extends to the outside of the shell, and the liquid inlets of several heat exchange tubes are all connected to the diversion pipe.
[0015] A gas collection pipe is provided on the shell, one end of which extends to the outside of the shell, and the gas outlets of several heat exchange tubes are all connected to the gas collection pipe.
[0016] The liquid inlet is located below the air outlet.
[0017] A third baffle is provided inside the heat exchange tube, and the third baffle extends spirally along the extension direction of the heat exchange tube.
[0018] The above-described structure of this utility model can achieve the following beneficial effects:
[0019] In operation, cryogenic media such as liquid nitrogen are introduced into several heat exchange tubes through the inlet, where they are burned by the burner to produce high-temperature flue gas. The high-temperature flue gas moves towards the first baffle plate, then enters several smoke tubes, and finally exits the shell through the exhaust pipe. Because the first baffle plate with spiral extension is installed in the furnace, the residence time of the high-temperature flue gas in the furnace is increased. In conjunction with the several smoke tubes, the residence time of the high-temperature flue gas in the shell is further extended, which increases the heat exchange time with the water in the heat exchange chamber, thereby improving the heat utilization rate and heat exchange efficiency.
[0020] This application has two heating components, which can be selected to be used for heating, or one heating component can be selected to be used for heating. The two heating components can be used as backups for each other to adapt to the heat exchange requirements of different low-temperature media; and it improves the reliability of the equipment and saves fuel. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of this embodiment;
[0022] Figure 2 This is a side view of this embodiment.
[0023] In the diagram: 1. Shell; 2. Heat exchange chamber; 3. Heat exchange tube; 4. Burner; 5. Furnace; 6. Exhaust pipe; 7. First baffle; 8. First smoke pipe; 9. Second smoke pipe; 10. First transition chamber; 11. Second transition chamber; 12. Second baffle; 13. Diverter pipe; 14. Gas collection pipe; 15. Third baffle. Detailed Implementation
[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0025] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification, claims and accompanying drawings of this utility model are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products or devices.
[0026] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.
[0027] refer to Figure 1 and Figure 2 The dual-furnace combustion gasifier shown includes: a shell 1, a heat exchange chamber 2 is provided inside the shell 1, a heating component and several heat exchange tubes 3 are provided inside the heat exchange chamber 2, one end of the several heat exchange tubes 3 is a liquid inlet and the other end is a gas outlet;
[0028] The heating assembly includes a burner 4, a furnace 5, an exhaust pipe 6, a first baffle 7, and several flue pipes. The burner 4 is located at one end of the furnace 5, and several flue pipes are located above the furnace 5. The several flue pipes are connected to the end of the furnace 5 away from the burner 4. One end of the exhaust pipe 6 extends to the outside of the housing 1 to discharge the flue gas in the several flue pipes. The first baffle 7 is located at the end of the furnace 5 away from the burner 4. The first baffle 7 extends spirally from the end away from the burner 4 to the end closer to the burner 4. The outside of the first baffle 7 is connected to the inside of the furnace 5.
[0029] Based on the above structure, during use, cryogenic media such as liquid nitrogen are introduced into several heat exchange tubes 3 through the liquid inlet, and then burned by the burner 4 to generate high-temperature flue gas. The high-temperature flue gas moves from one side toward the first baffle 7, then enters several smoke tubes, and finally exits into the shell 1 through the exhaust pipe 6. Because the furnace 5 is equipped with a spirally extended first baffle 7, the residence time of the high-temperature flue gas in the furnace is increased. In conjunction with several smoke tubes, the residence time of the high-temperature flue gas in the shell 1 is further extended, which increases the heat exchange time with the water in the heat exchange chamber 2, thereby improving the heat utilization rate and heat exchange efficiency.
[0030] like Figure 1 and Figure 2 As shown, in order to further extend the movement path of high-temperature flue gas within the shell 1, a plurality of flue pipes include a plurality of first flue pipes 8 and a plurality of second flue pipes 9. The plurality of second flue pipes 9 are positioned above the plurality of first flue pipes 8. A first transition chamber 10 is provided at the end of the furnace 5 away from the burner 4. The plurality of first flue pipes 8 are connected to the first transition chamber 10. A second transition chamber 11 is provided at the end of the plurality of first flue pipes 8 away from the first transition chamber 10. The plurality of first flue pipes 8 are connected to the second transition chamber 11, and the plurality of second flue pipes 9 are connected to the second transition chamber 11. Furthermore, the exhaust pipe 6 is connected to the end of the plurality of second flue pipes 9 away from the second transition chamber 11. In this way, the high-temperature flue gas enters the plurality of first flue pipes 8 through the first transition chamber 10, then enters the plurality of second flue pipes 9 through the second transition chamber 11, and finally exits the shell 1 through the exhaust pipe 6. This causes the high-temperature flue gas to move back and forth within the shell 1, thereby increasing the time it stays within the shell 1 and further improving the heat utilization rate.
[0031] like Figure 1 As shown, a second baffle 12 is provided in both the first flue 8 and the second flue 9. The second baffle 12 extends in a spiral shape, and the extension direction of the second baffle 12 is consistent with the axial direction of the first flue 8 or the axial direction of the second flue 9, so that the high-temperature flue gas moves in a spiral motion in the first flue 8 and the second flue 9, which further prolongs the time that the high-temperature flue gas stays in the first flue 8 and the second flue 9.
[0032] like Figure 2As shown, there are two heating components arranged side by side. This allows for the selection of either using both heating components or using only one of them to meet the heat exchange requirements of different low-temperature media.
[0033] like Figure 1 As shown, in order to increase the movement time of the low-temperature medium in the heat exchange tube 3, the heat exchange tube 3 is preferably S-shaped, and a third baffle 15 is provided in the heat exchange tube 3. The third baffle 15 extends spirally along the extension direction of the heat exchange tube 3, thereby further increasing the length of the movement path of the low-temperature medium in the heat exchange tube 3. Since the temperature of the heat exchange chamber 2 near the furnace 5 is relatively high, the liquid inlet is located below the gas outlet in this embodiment.
[0034] like Figure 1 As shown, a diversion pipe 13 is provided on the shell 1, one end of which extends to the outside of the shell 1, and the liquid inlets of several heat exchange tubes 3 are all connected to the diversion pipe 13; a gas collection pipe 14 is provided on the shell 1, one end of which extends to the outside of the shell 1, and the gas outlets of several heat exchange tubes 3 are all connected to the gas collection pipe 14. In this way, when a low-temperature medium is input into the diversion pipe 13, it can be diverted to several heat exchange tubes 3, and the gas in several heat exchange tubes 3 can be collected in the gas collection pipe 14 and discharged from the shell 1 through the outlet of the gas collection pipe 14.
[0035] In summary, during use, cryogenic media such as liquid nitrogen are introduced into several heat exchange tubes 3 through the liquid inlet, and then burned by the burner 4 to generate high-temperature flue gas. The high-temperature flue gas moves towards the first baffle 7, then enters several smoke tubes, and finally exits into the shell 1 through the exhaust pipe 6. Because the furnace 5 is equipped with a spirally extending first baffle 7, the residence time of the high-temperature flue gas in the furnace is increased. In conjunction with the several smoke tubes, the residence time of the high-temperature flue gas in the shell 1 is further extended, which increases the heat exchange time with the water in the heat exchange chamber 2, thereby improving the heat utilization rate and heat exchange efficiency.
[0036] This application has two heating components, which can be selected to be used for heating, or one heating component can be selected to be used for heating, in order to adapt to the heat exchange requirements of different low temperature media; and improves equipment reliability and saves fuel.
[0037] The above are merely preferred embodiments of this application, and the present invention is not limited to the above embodiments. It is understood that other improvements and variations that can be directly derived or conceived by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included within the protection scope of the present invention.
Claims
1. A dual-furnace combustion gasifier, characterized in that, include: The shell (1) is provided with a heat exchange chamber (2) and a heating component and several heat exchange tubes (3) are provided in the heat exchange chamber (2). One end of the several heat exchange tubes (3) is a liquid inlet and the other end is a gas outlet. The heating assembly includes a burner (4), a furnace (5), a flue pipe (6), a first baffle plate (7), and several flue pipes. The burner (4) is located at one end of the furnace (5), and several flue pipes are located above the furnace (5). Several flue pipes are connected to the end of the furnace (5) away from the burner (4). One end of the flue pipe (6) extends to the outside of the housing (1) to discharge the flue gas in the several flue pipes. The first baffle plate (7) is located at the end of the furnace (5) away from the burner (4). The first baffle plate (7) extends spirally from the end away from the burner (4) to the end close to the burner (4).
2. A twin hearth combustion gasifier as claimed in claim 1, wherein: The plurality of flue pipes include a plurality of first flue pipes (8) and a plurality of second flue pipes (9). The plurality of second flue pipes (9) are disposed above the plurality of first flue pipes (8). A first transition chamber (10) is provided at one end of the furnace (5) away from the burner (4). The plurality of first flue pipes (8) are connected to the first transition chamber (10). A second transition chamber (11) is provided at one end of the plurality of first flue pipes (8) away from the first transition chamber (10). The plurality of first flue pipes (8) are connected to the second transition chamber (11). The plurality of second flue pipes (9) are connected to the second transition chamber (11).
3. A twin hearth combustion gasifier according to claim 2, wherein: The exhaust pipe (6) is connected to one end of one of the second exhaust pipes (9) away from the second transition chamber (11).
4. A twin hearth combustion gasifier as claimed in claim 2, wherein: Both the first smoke pipe (8) and the second smoke pipe (9) are provided with a second baffle (12). The second baffle (12) extends in a spiral shape and the extension direction of the second baffle (12) is consistent with the axial direction of the first smoke pipe (8) or the axial direction of the second smoke pipe (9).
5. A twin hearth combustion gasifier according to any one of claims 1 to 4, characterized in that: There are two heating components, which are arranged side by side.
6. A twin hearth combustion gasifier as claimed in claim 1, wherein: The heat exchange tube (3) is S-shaped.
7. A twin hearth combustion gasifier as claimed in claim 1 wherein: A diversion pipe (13) is provided on the shell (1), one end of the diversion pipe (13) extends to the outside of the shell (1), and the liquid inlets of several heat exchange tubes (3) are connected to the diversion pipe (13).
8. A twin furnace gasifier according to claim 7, wherein: A gas collection pipe (14) is provided on the shell (1), one end of which extends to the outside of the shell (1), and the outlets of several heat exchange pipes (3) are connected to the gas collection pipe (14).
9. A twin hearth combustion gasifier as claimed in claim 1 wherein: The liquid inlet is located below the air outlet.
10. A twin hearth gasifier according to claim 1, wherein: A third baffle plate (15) is provided inside the heat exchange tube (3), and the third baffle plate (15) extends spirally along the extension direction of the heat exchange tube (3).