CN215491184U - Red mud slurry waste heat recovery utilizes device - Google Patents
Red mud slurry waste heat recovery utilizes device Download PDFInfo
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- CN215491184U CN215491184U CN202121131589.0U CN202121131589U CN215491184U CN 215491184 U CN215491184 U CN 215491184U CN 202121131589 U CN202121131589 U CN 202121131589U CN 215491184 U CN215491184 U CN 215491184U
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Abstract
The utility model relates to a red mud slurry waste heat recycling device, which belongs to the technical field of waste heat recycling and specifically comprises a heat exchange assembly, a water inlet and a water outlet of the heat exchange assembly extend to the outside of a red mud tank, the water inlet is connected with a water inlet pipeline, the water outlet is connected with an inlet of a circulating pump through a pipeline, and an outlet of the circulating pump is connected with a heat storage water tank; the heat exchange assembly mainly comprises a heat exchange base, a water inlet header pipe, a water outlet header pipe and heat exchange pipes, wherein the heat exchange base is arranged on the inner wall of the red mud tank, the water inlet header pipe and the water outlet header pipe are vertically arranged on the heat exchange base, the water inlet connecting pipe and the water outlet connecting pipe are respectively arranged on the water inlet header pipe and the water outlet header pipe, a plurality of heat exchange pipes are connected between the water inlet header pipe and the water outlet header pipe from top to bottom, and the heat exchange pipes are arranged on the heat exchange base.
Description
Technical Field
The utility model relates to a red mud slurry waste heat recycling device, and belongs to the technical field of waste heat recycling.
Background
The red mud process is a more key process in the process of producing alumina by a Bayer process, and the main process flow is that underflow slurry (the slurry temperature is 85 ℃) of a final washing settling tank is conveyed to a red mud workshop red mud trough (the slurry temperature is 83 ℃) through a pipeline by an underflow pump, and the feed is pumped to a filter press for filter pressing. The filter liquor after filter pressing automatically flows to a filter liquor tank and is sent back to the sedimentation process through a filter liquor pump, and the filter-pressed red mud filter cake is conveyed (or transported by vehicles) to a red mud yard through a belt for dry stockpiling. The temperature of the existing red mud slurry is about 83 ℃, the service life of filter cloth of a filter press and a red mud belt is reduced under the condition of long-time high temperature and high alkali, the loss of heat discharged by high-temperature dry red mud is large, the temperature of red mud return water is lower by 10 ℃, the temperature of the red mud return water is lower after returning to an alumina plant, and the red mud return water needs to be heated and then enters a production flow, so that a red mud slurry waste heat recycling device needs to be developed.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems in the prior art, the utility model provides the red mud slurry waste heat recycling device which is simple in structure, convenient to use, capable of effectively recycling the red mud waste heat and high in heat exchange efficiency.
In order to achieve the purpose, the technical scheme adopted by the utility model is a red mud slurry waste heat recycling device which comprises a red mud tank, wherein a heat exchange assembly is arranged in the red mud tank, a water inlet and a water outlet of the heat exchange assembly extend to the outside of the red mud tank, the water inlet is connected with a water inlet pipeline, the water outlet is connected with an inlet of a circulating pump through a pipeline, and an outlet of the circulating pump is connected with a heat storage water tank; the heat exchange assembly mainly comprises a heat exchange base, a water inlet header pipe, a water outlet header pipe and heat exchange pipes, wherein the heat exchange base is of a cylindrical structure and is installed on the inner wall of the red mud tank, the water inlet header pipe and the water outlet header pipe are vertically installed on the heat exchange base, the water inlet header pipe and the water outlet header pipe are respectively provided with a water inlet connecting pipe and a water outlet connecting pipe, a plurality of heat exchange pipes are connected between the water inlet header pipe and the water outlet header pipe from top to bottom, the heat exchange pipes are annular, the heat exchange base is tightly attached to the heat exchange pipes, and the heat exchange pipes are installed on the heat exchange base.
Preferably, the heat transfer base mainly comprises heat transfer section of thick bamboo, annular heat transfer seat, vertical heat transfer seat, install a plurality of annular heat transfer seats on the inner wall of heat transfer section of thick bamboo, the heat exchange tube sets up between annular heat transfer seat, the both sides of annular heat transfer seat are provided with the first arc constant head tank that is used for the heat exchange tube location respectively, vertical heat transfer seat is installed in the heat transfer section of thick bamboo, vertical heat transfer seat is located between inlet manifold and the outlet manifold, the both sides of vertical heat transfer seat are provided with the second arc constant head tank that is used for inlet manifold/outlet manifold location.
Preferably, the inner diameter of the annular heat exchange seat is larger than the inner diameter of the heat exchange tube and smaller than the outer diameter of the heat exchange tube, and heat conduction sealant is filled in gaps between the annular heat exchange seat and the heat exchange tube.
Preferably, the annular heat exchange base and the vertical heat exchange base are respectively fixed on the heat exchange cylinder through screws.
Preferably, the heat exchange base is further provided with a conical baffle plate.
Compared with the prior art, the utility model has the following technical effects: the red mud filter press filter cloth is simple in structure and convenient to use, the heat exchange assembly is arranged in the red mud tank, cooling water is introduced into the heat exchange assembly to exchange heat with red mud, the waste heat of red mud slurry is used for heating the red mud return water, the heat of the red mud is fully utilized, the energy consumption of a production system is reduced, and meanwhile, the service life of a belt and the filter press filter cloth is prolonged after the temperature of the red mud slurry is lowered.
In addition, the heat exchange assembly is installed by adopting the heat exchange base, so that the heat exchange efficiency is ensured, and meanwhile, the red mud is prevented from entering gaps between the heat exchange tubes, so that the problem of reduction of the heat exchange efficiency is solved, the service life of the heat exchange assembly is prolonged, and the stable operation of a system is ensured.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the heat exchange assembly of the present invention.
Fig. 3 is a schematic view of the installation structure of the vertical heat exchange base in the present invention.
Fig. 4 is a schematic view of an installation structure of a heat exchange pipe in the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
As shown in fig. 1 to 4, a red mud slurry waste heat recycling device comprises a red mud tank 1, a heat exchange assembly 2 is installed in the red mud tank 1, a water inlet and a water outlet of the heat exchange assembly 2 extend to the outside of the red mud tank 1, the water inlet is connected with a water inlet pipeline 3, the water outlet is connected with an inlet of a circulating pump 4 through a pipeline, and an outlet of the circulating pump 4 is connected with a heat storage water tank 5; heat exchange assembly 2 mainly comprises heat transfer base 6, water inlet manifold 7, exhalant main 8 and heat exchange tube 9, heat transfer base 6 is the tubular structure, and install on red mud groove 1's inner wall, water inlet manifold 7 and exhalant main 8 are vertical to be installed on heat transfer base 6, install water inlet connecting pipe 10 and exhalant connecting pipe 11 on water inlet manifold 7 and the exhalant main 8 respectively, be connected with a plurality of heat exchange tubes 9 from top to bottom between water inlet manifold 7 and the exhalant main 8, heat exchange tube 9 is the annular, and heat exchange tube 9 hugs closely heat transfer base 6, heat exchange tube 9 installs on heat transfer base 6.
The utility model installs the heat exchange component in the red mud groove. The heat exchange assembly is utilized to exchange heat with the red mud in the red mud tank, cooling water is introduced into the heat exchange assembly to exchange heat with the red mud, the waste heat of the red mud slurry is utilized to heat the red mud backwater, the heat of the red mud is fully utilized, the energy consumption of a production system is reduced, and meanwhile, the service life of a belt and a filter press filter cloth is prolonged after the temperature of the red mud slurry is lowered. The heat exchange component adopts two ends of a heat exchange tube to be respectively connected with the water inlet main pipe and the water outlet main pipe, and the heat exchange tube is arranged close to the heat exchange base. The heat exchange base can be convenient for arrange the heat exchange tube, can also avoid red mud to get into the clearance between the heat exchange tube, influences heat exchange efficiency.
Wherein, heat transfer base 6 mainly comprises heat transfer cylinder 12, annular heat transfer seat 13, vertical heat transfer seat 14, install a plurality of annular heat transfer seats 13 on the inner wall of heat transfer cylinder 12, heat exchange tube 9 sets up between annular heat transfer seat 13, the both sides of annular heat transfer seat 13 are provided with the first arc constant head tank 15 that is used for the heat exchange tube location respectively, vertical heat transfer seat 14 is installed in heat transfer cylinder 12, vertical heat transfer seat 14 is located between inlet manifold 7 and outlet manifold 8, the both sides of vertical heat transfer seat 14 are provided with the second arc constant head tank 16 that is used for inlet manifold/outlet manifold location.
The heat exchange base adopts a detachable structure, the heat exchange cylinder is directly installed in the red mud groove, the conical baffle plate 18 is installed at the top, and the conical baffle plate can prevent red mud from entering a gap between the heat exchange tubes from the top. Install annular heat transfer seat and vertical heat transfer seat in the heat exchanger section of thick bamboo, annular heat transfer seat and vertical heat transfer seat all adopt heat transfer material to make, and annular heat transfer seat and vertical heat transfer seat set up first arc constant head tank, second arc constant head tank respectively, conveniently fix the heat exchange tube. The inner diameter of the annular heat exchange seat 13 is larger than that of the heat exchange tube and smaller than the outer diameter of the heat exchange tube, the heat exchange tube is prevented from being completely wrapped, the heat exchange area of the heat exchange tube is increased, heat-conducting sealant is filled in gaps between the annular heat exchange seat 13 and the heat exchange tube 9, and the heat-conducting sealant can prevent red mud from entering gaps between the annular heat exchange seat and the heat exchange tube.
In addition, the annular heat exchange base 13 and the vertical heat exchange base 14 are fixed on the heat exchange cylinder through screws 17 respectively, so that the heat exchange cylinder is convenient to mount and dismount quickly.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included therein.
Claims (5)
1. The utility model provides a red mud ground paste waste heat recovery utilizes device, includes the red mud groove, its characterized in that: a heat exchange assembly is arranged in the red mud tank, a water inlet and a water outlet of the heat exchange assembly extend to the outside of the red mud tank, the water inlet is connected with a water inlet pipeline, the water outlet is connected with an inlet of a circulating pump through a pipeline, and an outlet of the circulating pump is connected with a heat storage water tank; the heat exchange assembly mainly comprises a heat exchange base, a water inlet header pipe, a water outlet header pipe and heat exchange pipes, wherein the heat exchange base is of a cylindrical structure and is installed on the inner wall of the red mud tank, the water inlet header pipe and the water outlet header pipe are vertically installed on the heat exchange base, the water inlet header pipe and the water outlet header pipe are respectively provided with a water inlet connecting pipe and a water outlet connecting pipe, a plurality of heat exchange pipes are connected between the water inlet header pipe and the water outlet header pipe from top to bottom, the heat exchange pipes are annular, the heat exchange base is tightly attached to the heat exchange pipes, and the heat exchange pipes are installed on the heat exchange base.
2. The device for recycling waste heat of red mud slurry according to claim 1, which is characterized in that: the heat exchange base mainly comprises a heat exchange cylinder, an annular heat exchange seat and a vertical heat exchange seat, wherein a plurality of annular heat exchange seats are installed on the inner wall of the heat exchange cylinder, the heat exchange tubes are arranged between the annular heat exchange seats, first arc-shaped positioning grooves used for positioning the heat exchange tubes are respectively arranged on two sides of the annular heat exchange seats, the vertical heat exchange seats are installed in the heat exchange cylinder and are located between a water inlet main pipe and a water outlet main pipe, and second arc-shaped positioning grooves used for positioning the water inlet main pipe/the water outlet main pipe are arranged on two sides of the vertical heat exchange seats.
3. The device for recycling waste heat of red mud slurry according to claim 1, which is characterized in that: the inner diameter of the annular heat exchange seat is larger than the inner diameter of the heat exchange tube and smaller than the outer diameter of the heat exchange tube, and heat conduction sealant is filled in gaps between the annular heat exchange seat and the heat exchange tube.
4. The device for recycling waste heat of red mud slurry according to claim 2, characterized in that: the annular heat exchange base and the vertical heat exchange base are respectively fixed on the heat exchange cylinder through screws.
5. The device for recycling waste heat of red mud slurry according to claim 1, which is characterized in that: and the heat exchange base is also provided with a conical baffle plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121131589.0U CN215491184U (en) | 2021-05-25 | 2021-05-25 | Red mud slurry waste heat recovery utilizes device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121131589.0U CN215491184U (en) | 2021-05-25 | 2021-05-25 | Red mud slurry waste heat recovery utilizes device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215491184U true CN215491184U (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121131589.0U Active CN215491184U (en) | 2021-05-25 | 2021-05-25 | Red mud slurry waste heat recovery utilizes device |
Country Status (1)
| Country | Link |
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| CN (1) | CN215491184U (en) |
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2021
- 2021-05-25 CN CN202121131589.0U patent/CN215491184U/en active Active
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