CN217083343U - Gypsum powder calcining hot air waste heat recycling structure - Google Patents
Gypsum powder calcining hot air waste heat recycling structure Download PDFInfo
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- CN217083343U CN217083343U CN202220784909.0U CN202220784909U CN217083343U CN 217083343 U CN217083343 U CN 217083343U CN 202220784909 U CN202220784909 U CN 202220784909U CN 217083343 U CN217083343 U CN 217083343U
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Abstract
The utility model provides a gypsum powder calcines hot-blast waste heat recovery and utilizes structure, including stoving room and the feeding funnel that sets gradually, predrying machine, lifting machine, burning furnace, dust remover, draught fan and chimney, the mill is connected to burning furnace discharge gate, and the air inlet of dust remover is connected to the air outlet of burning furnace, be equipped with heating pipe group in the stoving room, be equipped with the heat exchanger between the air outlet of draught fan and the chimney air intake, the heat exchanger passes through the pipeline and is heated the heat supply of pipe group with heating pipe group link and through heat transfer medium. The utility model discloses the exhaust waste heat of calcining furnace system when can calcining ripe gypsum with the gypsum is retrieved through the heat exchanger, for providing the required heat of drying in the stoving room, has improved the heat utilization rate of gypsum calcination system, has reduced the use amount of other heat sources in the stoving room, has reached green energy-conserving technological effect, improves the productivity effect.
Description
Technical Field
The utility model relates to a building materials production facility technical field especially indicates a gesso calcines hot-blast waste heat recovery and utilization structure.
Background
The gypsum building materials such as gypsum blocks, gypsum battens, gypsum mold boxes and the like are used as wall materials, and have the unique advantages of light weight, flame retardance, indoor air regulation, warmness in winter and coolness in summer, good anti-seismic performance, good sound insulation effect, capability of being sawed and planed, good construction performance and the like.
The desulfurized gypsum is the solid discharge of wet desulphurization in a thermal power plant, the phosphogypsum is the solid discharge of phosphate fertilizer production in a phosphate fertilizer plant, and the meristematic gypsum can be used as a cement retarder and calcined gypsum powder can be used as a gypsum-based building material product in a treatment mode.
The currently existing methods for calcining desulfurized gypsum and phosphogypsum mainly comprise two methods: one is a high-temperature airflow flash firing method using hot air as a heat source, the method has the advantages of low investment, high energy consumption and high yield, but the temperature is difficult to control and the product quality is unstable due to the fact that the high temperature is adopted to directly contact gypsum for calcination, and the method is suitable for being used as building material products with low requirements and less additive addition, such as gypsum blocks, gypsum laths and the like. The second is gypsum powder calcined by indirect heat exchange low-temperature slow burning method, the common heat source is power plant steam, and the process has the remarkable advantages of low energy consumption, simple process, stable product quality, easy control and the like. Is suitable for products such as plastering gypsum, gypsum-based self-leveling and the like.
At present, when the gypsum powder line calcines the gypsum powder, the tail portion of the calcining system still has higher temperature for air exhaust, and the heat is exhausted to the air, so that a large amount of heat is wasted.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough among the above-mentioned prior art, provide a gypsum powder calcines hot-blast waste heat recovery and utilizes structure, can retrieve the heat in the tail gas when calcining the gypsum for the stoving of gypsum building materials goods reaches the purpose of energy saving.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a gypsum powder calcining hot air waste heat recycling structure comprises a drying room, a feeding hopper, a pre-dryer, a lifter, a calcining furnace, a dust remover, an induced draft fan and a chimney, wherein the feeding hopper, the pre-dryer, the lifter, the calcining furnace, the dust remover, the induced draft fan and the chimney are sequentially arranged, a discharge port of the calcining furnace is connected with a mill, an air outlet of the calcining furnace is connected with an air inlet of the dust remover, a heating pipe set is arranged in the drying room, a heat exchanger is arranged between an air outlet of the induced draft fan and an air inlet of the chimney, and the heat exchanger is connected with a heating pipe set in the drying room through a pipeline and supplies heat to the heating pipe set through a heat transfer medium.
Furthermore, the drying room comprises a drying space enclosed by heat-insulating plates, the heating pipe group is arranged at the bottom and the side surface of the drying space, and a heat-insulating layer is arranged on the ground of the drying room.
Furthermore, a material conveying machine is arranged at an outlet at the lower part of the feeding hopper, and an outlet of the material conveying machine is connected with a feeding hole of the pre-drying machine.
Further, the calcining furnace adopts a fluidized bed furnace.
Furthermore, the heat transfer medium is water, a heat exchange pipeline is arranged in the heat exchanger and is connected with the heating pipe set through a pipeline to form a heating loop, and a circulating pump is connected to the heating loop in series.
Furthermore, the upper part of the calcining furnace is provided with a cover which completely covers the opening at the upper part of the calcining furnace, and the air inlet of the dust remover is communicated with the inside of the cover.
The utility model has the advantages that: the utility model discloses tail portion exhaust waste heat of calcining furnace system when can calcining ripe gypsum with the gypsum is retrieved through the heat exchanger, utilize the water among the waste heat heating heat exchanger, the water heat absorption after the temperature rise and through circulating pump and pipeline by the heating pipe group who carries the stoving room, hot water gets into the heating pipe group and provides the required heat of drying for the stoving room in, the heat utilization ratio of gypsum calcining system has been improved, the use amount of other heat sources in the stoving room has been reduced, green energy-saving technological effect has been reached, and the productivity effect is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of the present invention.
Shown in the figure: 1. the device comprises a drying room, 2, a feeding hopper, 3, a pre-dryer, 4, a lifter, 5, a calciner, 6, a dust remover, 7, an induced draft fan, 8, a chimney, 9, a material conveyor, 10, a mill, 11, a heating pipe group, 12, a heat insulation layer, 13, a heat exchanger, 14, a circulating pump, 15 and a cover.
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. Based on the embodiments in 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.
The gypsum powder calcining hot air waste heat recycling structure comprises a drying room 1, and a feeding hopper 2, a pre-dryer 3, a lifter 4, a calcining furnace 5, a dust remover 6, an induced draft fan 7 and a chimney 8 which are sequentially arranged, wherein a material conveyor 9 is arranged at an outlet at the lower part of the feeding hopper 2, the outlet of the material conveyor 9 is connected with a feeding hole of the pre-dryer 3, a discharging hole of the calcining furnace 5 is connected with a mill 10, and an air outlet of the calcining furnace 5 is connected with an air inlet of the dust remover 6; the drying room 1 comprises a drying space enclosed by heat-insulating plates, a heating pipe group 11 is arranged in the drying room 1, the heating pipe group 11 is arranged at the bottom and the side part of the drying space, and a heat-insulating layer 12 is arranged on the ground below the heating pipe group 11; a heat exchanger 13 is arranged between the air outlet of the induced draft fan 7 and the air inlet of the chimney 8, the heat exchanger 13 is preferably a coil type heat exchanger, the heat exchanger 13 is connected with the heating pipe set 11 through a pipeline to form a heating loop, a circulating pump 14 is connected on the heating loop in series, and the heat transfer medium is preferably water.
The calcining furnace 5 adopts a fluidized bed furnace, the upper part of the calcining furnace 5 is provided with an opening, the upper part of the calcining furnace 5 is provided with a cover cap 15 which completely covers the opening, and the air inlet of the dust remover 6 is communicated with the inside of the cover cap 15. The hot air and dust from the calciner 5 are collected by the cover 15 and enter the dust separator 6.
When the device is in operation, gypsum enters the pre-dryer 3 from the feeding hopper 2 to remove free water, the gypsum from which the free water is removed is lifted to a feeding port of the calciner 5 through the elevator 4, the gypsum enters the calciner 5 to be calcined at high temperature to remove part of crystal water to become mature gypsum and is discharged from a discharging port of the calciner 5, then the gypsum enters the mill 10 to be ground into a finished product, high-temperature exhaust gas at the upper part of the calciner 5 is collected through the cover 15 and enters the dust remover 6, the high-temperature air after dust removal heats circulating water in the calciner 5 through the heat exchanger 13, and the heat is brought to the heating pipe group 11 in the drying room 1 through the circulating water to heat and dry the product in the drying room 1. The ground below the drying room is provided with the heat insulation layer 12, so that heat can be prevented from being dissipated from the ground, and the heat utilization rate is improved.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a gypsum powder calcines hot-blast waste heat recovery and utilizes structure which characterized in that: the drying device comprises a drying room, and a feeding hopper, a pre-dryer, a lifter, a calcining furnace, a dust remover, an induced draft fan and a chimney which are sequentially arranged, wherein a discharge port of the calcining furnace is connected with a mill, an air outlet of the calcining furnace is connected with an air inlet of the dust remover, a heating pipe set is arranged in the drying room, a heat exchanger is arranged between an air outlet of the induced draft fan and an air inlet of the chimney, and the heat exchanger is connected with the heating pipe set through a pipeline and supplies heat to the heating pipe set through a heat transfer medium.
2. The gypsum powder calcination hot air waste heat recycling structure according to claim 1, characterized in that: the drying room comprises a drying space enclosed by heat-insulating plates, the heating pipe group is arranged at the bottom and the side surface of the drying space, and a heat-insulating layer is arranged on the ground of the drying room.
3. The gypsum powder calcination hot air waste heat recycling structure according to claim 1, characterized in that: and a material conveying machine is arranged at an outlet at the lower part of the feeding hopper, and an outlet of the material conveying machine is connected with a feeding hole of the pre-drying machine.
4. The gypsum powder calcination hot air waste heat recycling structure according to claim 3, characterized in that: the calcining furnace adopts a fluidized bed furnace.
5. The gypsum powder calcination hot air waste heat recycling structure according to claim 1, characterized in that: the heat transfer medium is water, a heat exchange pipeline is arranged in the heat exchanger and is connected with the heating pipe set through a pipeline to form a heating loop, and a circulating pump is connected to the heating loop in series.
6. The gypsum powder calcination hot air waste heat recycling structure according to claim 1, characterized in that: the upper part of the calcining furnace is provided with a cover which completely covers the upper part of the calcining furnace, and the air inlet of the dust remover is communicated with the inside of the cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220784909.0U CN217083343U (en) | 2022-04-05 | 2022-04-05 | Gypsum powder calcining hot air waste heat recycling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220784909.0U CN217083343U (en) | 2022-04-05 | 2022-04-05 | Gypsum powder calcining hot air waste heat recycling structure |
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| Publication Number | Publication Date |
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| CN217083343U true CN217083343U (en) | 2022-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220784909.0U Active CN217083343U (en) | 2022-04-05 | 2022-04-05 | Gypsum powder calcining hot air waste heat recycling structure |
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| CN (1) | CN217083343U (en) |
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- 2022-04-05 CN CN202220784909.0U patent/CN217083343U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230509 Address after: No. 9978 Shunwang Street, Zhucheng City, Weifang City, Shandong Province, 262200 Patentee after: Shandong Shigaoxin Materials Co.,Ltd. Address before: 266000 unit 601, unit 1, building 36, No. 1057, Jinshui Road, Licang District, Qingdao, Shandong Patentee before: Qingdao Institute of technology Ruida energy saving and Environmental Protection Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |