CN218398704U - Dynamic hydrothermal kettle tail gas circulating device for calcium silicate board - Google Patents
Dynamic hydrothermal kettle tail gas circulating device for calcium silicate board Download PDFInfo
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- CN218398704U CN218398704U CN202222232722.2U CN202222232722U CN218398704U CN 218398704 U CN218398704 U CN 218398704U CN 202222232722 U CN202222232722 U CN 202222232722U CN 218398704 U CN218398704 U CN 218398704U
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Abstract
The utility model discloses a dynamic hydrothermal reactor tail gas circulating device for calcium silicate plates, which comprises a reaction kettle body, a tail gas discharge port, an exhaust main pipe, a steam-water separator, an exhaust branch pipe, a gas filter, a drainage branch pipe, a liquid filter and the like; the exhaust main pipe is provided with a plurality of heat exchange pipes close to the tail gas outlet, the heat exchange pipes are connected with an external heat accumulator or a heating plate, the heating plate is used for heating a drying box, and the drying box is used for drying a calcium silicate plate. This tail gas circulating device passes through the setting of heat exchange tube can with heat recycle in the exhaust waste gas of reation kettle body, the heat of retrieving can be stored through the heat accumulator to the place that needs heat and temperature in the workshop, perhaps directly will acquire the heat pass through the heating of stoving case is carried out to the hot plate, with make full use of waste heat, dries the calcium silicate board, and the energy saving avoids extravagant.
Description
Technical Field
The utility model relates to calcium silicate board production technical field, concretely relates to calcium silicate board is with dynamic hydrothermal kettle tail gas circulating device.
Background
The calcium silicate board is a board prepared by using loose short fibers such as inorganic mineral fibers or cellulose fibers and the like as reinforcing materials and using siliceous-calcareous materials as main cementing materials, and forming calcium silicate gel bodies through the processes of pulping, forming, accelerating a curing reaction in high-temperature high-pressure saturated steam, drying, maintaining and the like. The calcium silicate board can be subjected to high-temperature steam pressing operation in a dynamic hydrothermal kettle (steam pressing kettle) in the production process, substances such as silicon dioxide and calcium hydroxide in the board blank can be subjected to hydration reaction with water under high temperature and high pressure to improve the performance of the calcium silicate board, the temperature of high-pressure steam in the steam pressing process can be about 180 ℃, after steam pressing is completed, tail gas containing various impurities and waste gas still needs to be discharged from the reaction kettle, the discharged tail gas still has high heat, energy waste can be caused if the tail gas is directly discharged, the environment can be polluted, and carbon emission is increased. Therefore, the tail gas discharged from the reaction kettle is treated.
The tail gas recycling system of the still kettle, as disclosed in the Chinese invention patent application, comprises the still kettle, a curing kiln, a boiler and a steam recycling chamber, wherein a plurality of exhaust holes which are uniformly distributed are formed in a pipeline which penetrates through the curing kiln, the steam recycling chamber is connected to the boiler, the tail gas is communicated with the pipeline to the curing kiln for recycling, although energy waste and water saving can be realized, some defects can be caused, as the tail gas discharged by the still kettle contains harmful gases and impurities, the gas is not the best choice for curing the plate, and the steam containing the impurities directly returns to the boiler, thus increasing the burden on a treatment system of the boiler.
Disclosure of Invention
The utility model aims at solving the problems in the prior art and providing a dynamic hydrothermal kettle tail gas circulating device for a calcium silicate board.
In order to achieve the above object, the utility model adopts the following technical scheme:
a dynamic hydrothermal kettle tail gas circulating device for a calcium silicate plate comprises a reaction kettle body for steaming and pressing the calcium silicate plate, wherein a tail gas outlet is formed in one side of the reaction kettle body and is connected with a main exhaust pipe, the main exhaust pipe is connected to a steam-water separator, an exhaust port of the steam-water separator is connected to a gas filter through an exhaust branch pipe, a water outlet of the steam-water separator is connected to a boiler or a water storage tank through a water exhaust branch pipe, and a liquid filter is arranged on the water exhaust branch pipe; the exhaust main pipe is provided with a plurality of heat exchange pipes close to the tail gas outlet, the heat exchange pipes are connected with an external heat accumulator or a heating plate, the heating plate is used for heating a drying box, and the drying box is used for drying a calcium silicate plate.
This calcium silicate board passes through with dynamic hydrothermal cauldron tail gas circulating device the setting of heat exchange tube can with heat recycle in the exhaust waste gas of reation kettle body, the heat of retrieving can be stored through the heat accumulator to need the place of heat and temperature in the workshop, perhaps directly pass through the heat that acquires the heating of stoving case is carried out to the hot plate, with make full use of waste heat, dry the calcium silicate board, the energy saving avoids extravagant. The higher heat collected by the heat accumulator can also be returned to the reaction kettle again to maintain the temperature of the reaction kettle in work or carry out heat preservation operation.
When the calcium silicate board is autoclaved by the reaction kettle body, the temperature is about 180 ℃, the temperature of the mixed gas discharged by the reaction kettle body after the autoclaving is finished is lower than 180 ℃, and the heat is very wasted if the heat is not recycled. The calcium silicate board is dried in the subsequent process, and the temperature required by drying is about 80 ℃, so that the high-temperature heat collected by the heat exchange pipe can be fully utilized.
The heat exchange pipe directly exchanges heat in the exhaust main pipe along the airflow direction, a plurality of groups of heat exchange pipes are arranged in the front and the back of the exhaust main pipe, so that heat in the exhaust main pipe can be collected, the temperature of gas (water) can be rapidly reduced, gas and water can be separated when water-containing gas passes through the steam-water separator, the separated gas can be harmlessly discharged after being filtered by the gas filter, air pollution is avoided, carbon emission can be reduced, and the environment is protected; the separated water can be collected for later use after being filtered by the liquid filter, and can also be directly discharged to a boiler to supply water for the boiler, and high-temperature and high-pressure steam generated by the boiler can be used for the reaction kettle body to form circulation.
Further, the heat exchange tube includes that the heat transfer advances pipe and heat transfer exit tube, and sets up the heat transfer advance the pipe with serpentine coil between the heat transfer exit tube, serpentine coil is located in the exhaust main pipe, the heat transfer advance the pipe with the heat transfer exit tube passes respectively the exhaust main pipe is connected to heat accumulator or hot plate.
The serpentine coil can increase the path and the length of the heat exchange tube in the exhaust main tube, so that the heat exchange tube can exchange heat better, and the aims of quickly acquiring energy and reducing the temperature of gas are fulfilled.
The heat exchange inlet pipe, the heat exchange outlet pipe and the serpentine coil can be manufactured and arranged independently so as to be manufactured and installed, and then are connected and assembled together in a screwing or welding mode after being installed.
Furthermore, the heat exchange inlet pipe and the heat exchange outlet pipe are located on the outer portion of the exhaust main pipe, the heat insulation sleeves are respectively sleeved on the outer portions of the exhaust main pipe, and a connecting flange is arranged at the end portion of each heat insulation sleeve and connected with the exhaust main pipe through screws.
On one hand, the heat insulation sleeve can insulate the inlet pipe and the outlet pipe, so that heat loss is avoided; on the other hand, the left and right sides of the exhaust main pipe can be fixedly connected, and the exhaust main pipe can be fixed by the connecting flange arranged at the end part.
Further, serpentine coil is the coil pipe of turning back at least the cubic, serpentine coil sets up the multiunit along high temperature steam outflow direction interval in proper order, is close to serpentine coil's the total length of turning back of tail gas exhalant department is greater than and keeps away from serpentine coil's the total length of turning back of tail gas exhalant department.
The setting of turning back and multiunit many times can promote holistic heat exchange efficiency, and the setting of differentiating in the gas flow direction, can more accurate effectual heat transfer of carrying on, avoids the material extravagant.
Furthermore, the serpentine coil is a corrugated pipe, and a heat absorption sheet is connected between adjacent corrugated pipes. The corrugated pipe can increase the surface area of the pipe body, so that the heat absorption area is increased, and the heat absorption effect is further improved by the heat absorption sheet.
Furthermore, the heating plate is positioned in the drying box, and high-temperature and high-pressure steam generated by the boiler is introduced into the reaction kettle body.
Further, the gas filter is an adsorption filter, a plurality of layers of adsorption beds are arranged in the adsorption filter, and harmless gas filtered by the gas filter is directly discharged. The adsorption bed is filled with different types of adsorbents, such as adsorption materials capable of adsorbing carbon emission gases such as carbon dioxide, carbon monoxide and the like, and can also be adsorption materials of other harmful gases, such as activated carbon, porous ceramic particles and the like.
Furthermore, the liquid filter is a Y-shaped filter arranged on the drainage branch pipe, and a detachable filter screen is arranged in the Y-shaped filter. Adopt Y type filter can effectually filter the solid-state impurity of aquatic for the water after filtering can directly by the boiler uses, the filter core of this kind of filter moreover, promptly the filter screen is very convenient dismantlement, so that clearance and change.
Furthermore, the heat exchange pipes are respectively provided with a valve on a pipeline outside the exhaust main pipe, the exhaust main pipe comprises an inner pipe and a heat insulation layer wrapped outside the inner pipe, and the thickness of the heat insulation layer is larger than that of the inner pipe. The valve can control the opening and closing of the heat exchange tube, and the three-way valve can be connected to other places. The heat preservation insulating layer can protect the inner tube, also can avoid calorific loss extravagant.
Compared with the prior art, the beneficial effects of the utility model are that: 1. the circulating device can recycle the heat in the waste gas discharged by the reaction kettle body through the arrangement of the heat exchange tube, and the recycled heat can be stored and utilized through the heat accumulator, so that the waste heat is fully utilized, the energy is saved, and the waste is avoided; 2. the recovered heat can be used for drying the calcium silicate board; 3. the separated gas can be discharged harmlessly after being filtered by the gas filter, so that air pollution is avoided, carbon emission can be reduced, and the environment is protected; 4. the separated water can be collected for later use after being filtered by the liquid filter, and can also be directly discharged to a boiler to supply water for the boiler, and high-temperature and high-pressure steam generated by the boiler can be used for the reaction kettle body to form circulation.
Drawings
FIG. 1 is a schematic view of the overall arrangement of a dynamic hydrothermal reactor tail gas circulation device for calcium silicate boards according to the present invention;
fig. 2 is a schematic structural diagram of a heat exchange tube of the dynamic hydrothermal kettle tail gas circulation device for the calcium silicate plate of the present invention;
FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;
FIG. 4 is another schematic structural diagram of the heat exchange tube of the present invention;
in the figure: 1. a reaction kettle body; 2. a tail gas discharge port; 3. a main exhaust pipe; 301. an inner tube; 302. a heat insulation layer; 4. a steam-water separator; 5. an exhaust branch pipe; 6. a gas filter; 7. a drain branch pipe; 8. a liquid filter; 9. a heat exchange pipe; 901. a heat exchange inlet pipe; 902. a heat exchange outlet pipe; 903. a serpentine coil; 904. a thermal insulation sleeve; 905. a connecting flange; 10. heating plates; 11. a drying box; 12. a heat sink sheet.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "left", "right", "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 simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The first embodiment is as follows:
as shown in fig. 1 to 3, a dynamic hydrothermal reactor tail gas circulation device for a calcium silicate plate comprises a reaction kettle body 1 for autoclaving the calcium silicate plate, wherein a tail gas outlet 2 is arranged on one side of the reaction kettle body 1, the tail gas outlet 2 is connected with a main exhaust pipe 3, the main exhaust pipe 3 is connected to a steam-water separator 4, an exhaust port of the steam-water separator 4 is connected to a gas filter 6 through an exhaust branch pipe 5, a water outlet of the steam-water separator 4 is connected to a boiler or a water storage tank through a water discharge branch pipe 7, and a liquid filter 8 is arranged on the water discharge branch pipe 7; a plurality of heat exchange pipes 9 are arranged in the exhaust main pipe 3 and close to the tail gas exhaust port 2, the heat exchange pipes 9 are connected with an external heating plate 10, the heating plate 10 is used for heating a drying box 11, and the drying box 11 is used for drying a calcium silicate plate.
This circulating device passes through the setting of heat exchange tube 9 can with heat recycle in the exhaust waste gas of reation kettle body 1 passes through the heat that acquires the heating of stoving case 11 is carried out to hot plate 10 to make full use of waste heat dries the calcium silicate board, and the energy saving avoids extravagant.
When the calcium silicate board is autoclaved by the reaction kettle body 1, the temperature is about 180 ℃, although the temperature of the mixed gas discharged by the reaction kettle body after the autoclave is finished is lower than 180 ℃, the heat is very wasted if the mixed gas is not recycled. The calcium silicate board is dried in the subsequent process, and the temperature required by drying is about 80 ℃, so that the high-temperature heat collected by the heat exchange pipe can be fully utilized.
The heat exchange pipe 9 is used for directly exchanging heat in the exhaust main pipe 3 along the airflow direction, a plurality of groups of heat exchange pipes are arranged in the front and the back of the exhaust main pipe 3, so that the heat in the exhaust main pipe 3 can be collected, the temperature of gas (water) can be rapidly reduced, when water-containing gas passes through the steam-water separator 4, the gas and the water can be separated, the separated gas can be discharged harmlessly after being filtered by the gas filter 6, air pollution is avoided, carbon emission can be reduced, and the environment is protected; the separated water can be collected for standby after being filtered by the liquid filter 8, and can also be directly discharged to a boiler to supply water for the boiler, and the high-temperature and high-pressure steam generated by the boiler can be used for the reaction kettle body to form circulation.
Further, the heat exchange tube 9 includes a heat exchange inlet tube 901, a heat exchange outlet tube 902, and a serpentine coil 903 disposed between the heat exchange inlet tube 901 and the heat exchange outlet tube 902, where the serpentine coil 903 is located in the exhaust main tube 3, and the heat exchange inlet tube 901 and the heat exchange outlet tube 902 respectively pass through the exhaust main tube 3 and are connected to the heating plate 10.
The serpentine pipe 903 is arranged to increase the path and length of the heat exchange pipe in the exhaust main pipe, so that the heat exchange pipe can exchange heat better, and the purposes of quickly acquiring energy and reducing the temperature of gas are achieved.
Further, the heat exchange inlet pipe 901 and the heat exchange outlet pipe 902 are respectively sleeved with a heat insulation sleeve 904 at the outer part of the exhaust main pipe 3, a connecting flange 905 is arranged at the end part of the heat insulation sleeve 904, and the connecting flange 905 is in screw connection with the exhaust main pipe 3.
On one hand, the arrangement of the heat insulation sleeve 904 can insulate the heat of the inlet pipe and the outlet pipe, so that heat loss is avoided; on the other hand, the left and right sides of the exhaust main pipe 3 can be connected and fixed to each other by the connecting flange 905 provided at the end portion.
Further, serpentine 903 is the coil that turns back for at least three times, serpentine 903 sets up the multiunit along high temperature steam outflow direction interval in proper order, is close to serpentine's of 2 departments of tail gas discharge port total length of turning back is greater than keeps away from serpentine 2's of tail gas discharge port total length of turning back.
The setting of turning back and multiunit many times can promote holistic heat exchange efficiency, and the setting of differentiating in the gas flow direction, can more accurate effectual heat transfer of carrying on, avoids the material extravagant.
Further, the heating plate 10 is located in the drying box 11, and high-temperature and high-pressure steam generated by the boiler is introduced into the reaction kettle body.
Further, the gas filter 6 is an adsorption filter, a plurality of layers of adsorption beds are arranged in the adsorption filter, and harmless gas filtered by the gas filter is directly discharged. The adsorption bed is filled with different types of adsorbents, such as adsorption materials capable of adsorbing carbon emission gases such as carbon dioxide and carbon monoxide, and can also be adsorption materials for other harmful gases, such as activated carbon, porous ceramic particles and the like.
Further, the liquid filter 8 is a Y-shaped filter mounted on the drainage branch pipe, and a detachable filter screen is arranged in the Y-shaped filter. Adopt Y type filter can effectually filter the solid-state impurity of aquatic for water after the filtration can directly by the boiler uses, the filter core of this kind of filter moreover, promptly the filter screen is very convenient dismantlement, so that clearance and change.
The second embodiment:
the present embodiment differs from the first embodiment in the structure of the serpentine coil.
As shown in fig. 4, the serpentine pipe 903 is a corrugated pipe, and heat absorbing sheets 12 are connected between adjacent corrugated pipes. The corrugated pipe can increase the surface area of the pipe body, so that the heat absorption area is increased, and the heat absorption effect is further improved by the heat absorption sheets 12.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A dynamic hydrothermal kettle tail gas circulating device for a calcium silicate plate comprises a reaction kettle body for steaming and pressing the calcium silicate plate, wherein a tail gas outlet is formed in one side of the reaction kettle body; the exhaust main pipe is provided with a plurality of heat exchange pipes close to the tail gas outlet, the heat exchange pipes are connected with an external heat accumulator or a heating plate, the heating plate is used for heating a drying box, and the drying box is used for drying a calcium silicate plate.
2. The dynamic hydrothermal kettle tail gas circulating device for the calcium silicate board as claimed in claim 1, wherein the heat exchange tube comprises a heat exchange inlet tube and a heat exchange outlet tube, and a serpentine coil arranged between the heat exchange inlet tube and the heat exchange outlet tube, the serpentine coil is located in the exhaust main tube, and the heat exchange inlet tube and the heat exchange outlet tube respectively penetrate through the exhaust main tube and are connected to the heat accumulator or the heating plate.
3. The dynamic hydrothermal kettle tail gas circulation device for the calcium silicate plate as claimed in claim 2, wherein heat-insulating sleeves are respectively sleeved on the parts, located outside the exhaust main pipe, of the heat-exchange inlet pipe and the heat-exchange outlet pipe, the end parts of the heat-insulating sleeves are provided with connecting flanges, and the connecting flanges are in screw connection with the exhaust main pipe.
4. The dynamic hydrothermal kettle tail gas circulating device for the calcium silicate board as claimed in claim 2, wherein the serpentine coil is a coil which turns back at least three times, a plurality of groups of serpentine coils are sequentially arranged at intervals along the high-temperature steam outflow direction, and the total turning-back length of the serpentine coil close to the tail gas outlet is greater than that of the serpentine coil far away from the tail gas outlet.
5. The tail gas circulating device of the dynamic hydrothermal kettle for the calcium silicate board as claimed in claim 2, wherein the serpentine coil is a corrugated pipe, and a heat absorbing plate is further connected between adjacent corrugated pipes.
6. The dynamic hydrothermal kettle tail gas circulating device for the calcium silicate board as claimed in claim 1, wherein the heating plate is positioned in the drying box, and high-temperature and high-pressure steam generated by the boiler is introduced into the reaction kettle body.
7. The dynamic hydrothermal kettle tail gas circulation device for the calcium silicate board as claimed in claim 1, wherein the gas filter is an adsorption filter, a plurality of layers of adsorption beds are arranged in the adsorption filter, and harmless gas filtered by the gas filter is directly discharged.
8. The dynamic hydrothermal kettle tail gas circulating device for the calcium silicate board as claimed in claim 1, wherein the liquid filter is a Y-shaped filter mounted on a drainage branch pipe, and a detachable filter screen is arranged in the Y-shaped filter.
9. The tail gas circulating device of the dynamic hydrothermal kettle for the calcium silicate board as claimed in claim 1, wherein the heat exchange pipes are respectively provided with a valve on a pipeline outside the main exhaust pipe, and the main exhaust pipe comprises an inner pipe and a heat insulation layer wrapped outside the inner pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222232722.2U CN218398704U (en) | 2022-08-24 | 2022-08-24 | Dynamic hydrothermal kettle tail gas circulating device for calcium silicate board |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222232722.2U CN218398704U (en) | 2022-08-24 | 2022-08-24 | Dynamic hydrothermal kettle tail gas circulating device for calcium silicate board |
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| CN218398704U true CN218398704U (en) | 2023-01-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116748469A (en) * | 2023-08-11 | 2023-09-15 | 秦皇岛旌铸德科技有限公司 | Steam dewaxing kettle |
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2022
- 2022-08-24 CN CN202222232722.2U patent/CN218398704U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116748469A (en) * | 2023-08-11 | 2023-09-15 | 秦皇岛旌铸德科技有限公司 | Steam dewaxing kettle |
| CN116748469B (en) * | 2023-08-11 | 2023-10-20 | 秦皇岛旌铸德科技有限公司 | Steam dewaxing kettle |
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