CN214173065U - Fused salt phase change heat storage device applied to Lurgi furnace - Google Patents
Fused salt phase change heat storage device applied to Lurgi furnace Download PDFInfo
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- CN214173065U CN214173065U CN202023014928.5U CN202023014928U CN214173065U CN 214173065 U CN214173065 U CN 214173065U CN 202023014928 U CN202023014928 U CN 202023014928U CN 214173065 U CN214173065 U CN 214173065U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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Abstract
The utility model relates to a be applied to fused salt phase change heat storage device field of lurgi stove, more specifically the fused salt phase change heat storage device of being applied to lurgi stove that says so can carry out multistage heating to salt, increases heat exchange speed, improves waste heat recovery efficiency. The utility model provides a be applied to fused salt phase transition heat storage device of lurgi furnace, includes powder feeder, lurgi furnace, fused salt holding vessel and heat exchange spiral pipe, powder feeder includes propeller blade, motor, powder holding vessel, powder preheating pipe way entry and powder preheating pipe way export, and the motor is fixed on the pipe, and the motor output shaft is connected with the screw, and the powder preheating pipe way is settled in the powder holding vessel, fused salt holding vessel includes heat storage tank container and discharging pipe, and discharging pipe one end is connected with heat storage tank container, and the other end is connected with the lower extreme of heat exchange spiral pipe, and the upper end of heat exchange spiral pipe is connected with the powder feeder.
Description
Technical Field
The utility model relates to a be applied to fused salt phase change heat storage device field of lurgi furnace, more specifically the fused salt phase change heat storage device of being applied to lurgi furnace that says so.
Background
Lurgi furnace is a gasification furnace for producing natural gas by using coal, and is put into mass production for use due to its high yield. Because of the important status of coal-based natural gas in China, the coal-based natural gas is widely applied to Lurgi furnaces, and the energy loss caused by the coal-based natural gas is not negligible. In lurgi furnaces, a large amount of heat is required in the gasification of coal, steam and oxygen, with the concomitant production of a large amount of waste heat. This heat is currently recycled mainly by the process of converting water into steam. However, because the temperature inside the furnace is extremely high (about 1000 ℃), the temperature difference between the temperature and the temperature of the steam is large, the steam expands seriously, and the steam amount is small, the waste heat recovery efficiency is not high, and a large amount of heat energy still flows into the environment, thereby causing energy waste. The phase change temperature of the salt is high, the phase change heat absorption is high, the thermal expansion is small, and the phase change of the salt is used for absorbing heat, so that the waste heat recovery efficiency can be improved, and the fused salt phase change heat storage device applied to the Lurgi furnace is designed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides a be applied to fused salt phase change heat storage device of lurgi furnace, the phase transition temperature of salt is high, the phase transition heat absorption is many, can carry out multistage heating to salt, increases heat exchange speed, improves waste heat recovery efficiency.
For solving the technical problem, the utility model relates to a be applied to fused salt phase change heat storage device field of lurgi furnace, more specifically the fused salt phase change heat storage device of being applied to lurgi furnace that says so, including powder feeder, propeller blade, motor, powder holding vessel, powder preheating pipe way entry, powder preheating pipe way export, lurgi furnace, fused salt holding vessel, heat storage tank container, discharging pipe and heat exchange spiral pipe, can carry out multistage heating to salt, increase heat exchange speed, improve waste heat recovery efficiency.
A fused salt phase change heat storage device applied to a Lurgi furnace comprises a powder feeder, the Lurgi furnace, a fused salt storage tank and a heat exchange spiral pipe, wherein the powder feeder comprises a propeller blade, a motor, a powder storage tank, a powder preheating pipeline inlet and a powder preheating pipeline outlet, the motor is fixed on a pipe, the output shaft of the motor is connected with the propeller, the powder preheating pipeline is arranged in the powder storage tank, the two powder preheating pipelines are arranged in an up-down manner, the powder preheating pipeline inlet is formed by air inlets of the two powder preheating pipelines, the powder preheating pipeline outlet is formed by air outlets of the two powder preheating pipelines, the heat exchange spiral pipe is attached to the inner wall of the Lurgi furnace and is installed on the inner wall of the Lurgi furnace, the fused salt storage tank comprises a heat storage tank container and a discharge pipe, one end of the discharge pipe is connected with the heat storage tank container, the other end of the discharge pipe is connected with the lower end of the heat exchange spiral pipe, the upper end of the heat exchange spiral pipe is connected with the powder feeder.
As a further optimization of the technical scheme, the utility model relates to a be applied to fused salt phase change heat storage device of lurgi furnace the rotational speed of motor can be adjusted.
As the further optimization of this technical scheme, the utility model relates to a be applied to fused salt phase change heat storage device of lurgi furnace the powder preheat the pipeline and be "toper" spiral arrangement, and use the high copper alloy of heat exchange rate to make.
As a further optimization of this technical scheme, the utility model relates to a be applied to fused salt phase change heat storage device of lurgi furnace heat exchange spiral pipe arrangement mode be "on dredge closely down", the interval is inhomogeneous promptly, the upper portion interval is big, the lower part interval is little.
As a further optimization of this technical scheme, the utility model relates to a be applied to fused salt phase change heat storage device of lurgi furnace the heat exchange spiral pipe use the high copper alloy of heat exchange rate to make.
As a further optimization of the technical scheme, the utility model relates to a be applied to fused salt phase change heat storage device of lurgi furnace heat storage tank container have thermal-insulated heat preservation effect.
The utility model relates to a be applied to fused salt phase change heat storage device of lurgi furnace's beneficial effect does:
the utility model relates to a be applied to fused salt phase change heat storage device of lurgi stove can carry out multistage heating to salt, increases heat exchange speed, improves waste heat recovery efficiency.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic perspective view of a molten salt phase change heat storage device applied to a lurgi furnace according to the present invention;
fig. 2 is a cross-sectional view of a molten salt phase change heat storage device applied to a lurgi furnace;
FIG. 3 is an enlarged view of a portion of FIG. 2 at I;
FIG. 4 is a sectional view of the molten salt storage tank.
In the figure: a powder feeder 1; a propeller blade 11; a motor 12; a powder storage tank 13; a powder preheating line 14; powder preheat line inlet 15; powder preheat line outlet 16; a Lurgi oven 2; a molten salt storage tank 3; a heat storage tank vessel 31; a discharge pipe 32; a heat exchange coil 4.
Detailed Description
The first embodiment is as follows:
the present embodiment is described below with reference to fig. 1, fig. 2, fig. 3 and fig. 4, and the present invention relates to a molten salt phase change heat storage device applied to lurgi furnace, and more specifically to a molten salt phase change heat storage device applied to lurgi furnace, including powder feeder 1, propeller blade 11, motor 12, powder storage tank 13, powder preheating pipeline 14, powder preheating pipeline inlet 15, powder preheating pipeline outlet 16, lurgi furnace 2, molten salt storage tank 3, heat storage tank container 31, discharging pipe 32 and heat exchange spiral pipe 4, can carry out multistage heating to salt, increase heat exchange speed, improve waste heat recovery efficiency.
A fused salt phase change heat storage device applied to a Lurgi furnace comprises a powder feeder 1, a Lurgi furnace 2, a fused salt storage tank 3 and a heat exchange spiral pipe 4, wherein the powder feeder 1 comprises a propeller blade 11, a motor 12, a powder storage tank 13, powder preheating pipelines 14, a powder preheating pipeline inlet 15 and a powder preheating pipeline outlet 16, the motor 12 is fixed on the pipe, an output shaft of the motor 12 is connected with the propeller blade 11, the powder preheating pipelines 14 are arranged in the powder storage tank 13, the two powder preheating pipelines 14 are arranged in an up-down row, the two powder preheating pipelines 14 form the powder preheating pipeline inlet 15, the two powder preheating pipelines 14 form the powder preheating pipeline outlet 16, the heat exchange spiral pipe 4 is attached to the inner wall of the Lurgi furnace 2, the fused salt storage tank 3 comprises a heat storage tank container 31 and a discharge pipe 32, one end of the discharge pipe 32 is connected with the heat storage tank container 31, the other end is connected with the lower end of the heat exchange spiral pipe 4, and the upper end of the heat exchange spiral pipe 4 is connected with the powder feeder 1.
When the Lurgi furnace is used for preparing natural gas by coal, a large amount of waste heat is in the Lurgi furnace, hot steam in the Lurgi furnace 2 enters the powder preheating pipeline 14 through the powder preheating pipeline inlet 15, at the moment, salt powder placed in the powder storage tank 13 is heated for the first time, the temperature is increased, liquid molten salt slagging caused by low temperature after the salt powder enters the heat exchange spiral pipe 4 is prevented, the hot steam is discharged through the powder preheating pipeline outlet 16, the motor 12 is started, the propeller blades 11 drive the salt powder to enter the heat exchange spiral pipe 4, the rotating speed of the motor 12 is adjusted in real time according to parameters such as viscosity and flow speed of the molten salt in the heat exchange spiral pipe 4, so that the amount of the salt powder entering the heat exchange spiral pipe 4 is controlled, the salt powder receives radiation heat from coal combustion flame after entering the heat exchange spiral pipe 4, the waste heat enables the salt powder to be heated and melted, under the action of gravity, the molten salt can flow downwards along the heat exchange spiral pipe 4, the upper part of the heat exchange spiral pipe 4 is large in distance and pipe slope, the flow rate of a small amount of molten salt can be improved, the molten salt content of the lower part is high, the pressure is high, the flow rate is high, a large amount of heat is absorbed in the phase change process, the performance is stable, and finally the residual heat enters the heat storage tank container 31 through the discharge pipe 32 in the form of molten salt to be stored.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or replacements made by those skilled in the art within the scope of the present invention also belong to the protection scope of the present invention.
Claims (6)
1. The utility model provides a be applied to fused salt phase transition heat storage device of lurgi furnace, includes powder feeder (1), propeller blade (11), motor (12), powder holding vessel (13), powder preheating pipe way (14), powder preheating pipe way entry (15), powder preheating pipe way export (16), lurgi furnace (2), fused salt holding vessel (3), heat storage tank container (31), discharging pipe (32) and heat exchange spiral pipe (4), its characterized in that: the powder feeder (1) comprises a propeller blade (11), a motor (12), a powder storage tank (13), a powder preheating pipeline (14), a powder preheating pipeline inlet (15) and a powder preheating pipeline outlet (16), wherein the motor (12) is fixed on a pipe, an output shaft of the motor (12) is connected with the propeller blade (11), the powder preheating pipeline (14) is arranged in the powder storage tank (13), the two powder preheating pipelines (14) are arranged in an up-and-down manner, the powder preheating pipeline inlet (15) is formed by air inlets of the two powder preheating pipelines (14), the powder preheating pipeline outlet (16) is formed by air outlets of the two powder preheating pipelines (14), a heat exchange spiral pipe (4) is attached to the inner wall of the Lurgi furnace (2), the molten salt storage tank (3) comprises a heat storage tank container (31) and a discharge pipe (32), one end of the discharge pipe (32) is connected with the heat storage tank container (31), the other end is connected with the lower end of a heat exchange spiral pipe (4), and the upper end of the heat exchange spiral pipe (4) is connected with the powder feeder (1).
2. The molten salt phase change heat storage device applied to the lurgi furnace as claimed in claim 1, wherein: the rotational speed of the motor (12) can be adjusted.
3. The molten salt phase change heat storage device applied to the lurgi furnace as claimed in claim 1, wherein: the powder preheating pipe (14) is arranged in a conical spiral mode and is made of copper alloy with high heat exchange rate.
4. The molten salt phase change heat storage device applied to the lurgi furnace as claimed in claim 1, wherein: the heat exchange spiral pipe (4) is arranged in a mode of being sparse at the top and dense at the bottom, namely, the distance is not uniform, the distance between the upper part is large, and the distance between the lower part is small.
5. The molten salt phase change heat storage device applied to the lurgi furnace as claimed in claim 1, wherein: the heat exchange spiral pipe (4) is made of copper alloy with high heat exchange rate.
6. The molten salt phase change heat storage device applied to the lurgi furnace as claimed in claim 1, wherein: the heat storage tank container (31) has the functions of heat insulation and heat preservation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023014928.5U CN214173065U (en) | 2020-12-15 | 2020-12-15 | Fused salt phase change heat storage device applied to Lurgi furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023014928.5U CN214173065U (en) | 2020-12-15 | 2020-12-15 | Fused salt phase change heat storage device applied to Lurgi furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214173065U true CN214173065U (en) | 2021-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023014928.5U Active CN214173065U (en) | 2020-12-15 | 2020-12-15 | Fused salt phase change heat storage device applied to Lurgi furnace |
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| Country | Link |
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| CN (1) | CN214173065U (en) |
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- 2020-12-15 CN CN202023014928.5U patent/CN214173065U/en active Active
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