CN218673180U - System for utilize surplus heat to carry out waste water drying - Google Patents
System for utilize surplus heat to carry out waste water drying Download PDFInfo
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- CN218673180U CN218673180U CN202222821157.3U CN202222821157U CN218673180U CN 218673180 U CN218673180 U CN 218673180U CN 202222821157 U CN202222821157 U CN 202222821157U CN 218673180 U CN218673180 U CN 218673180U
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Abstract
The utility model relates to a system for drying waste water by utilizing surplus heat, which comprises a submerged arc furnace, a waste heat recovery device, a dust remover, a waste water storage tank and a chimney, wherein the submerged arc furnace is communicated with the waste heat recovery device through a first main flue, the waste heat recovery device is communicated with the dust remover through a second main flue, and the dust remover is communicated with the chimney through a third main flue; a bypass flue is arranged on the first main flue, and two ends of the bypass flue are respectively connected and communicated with the first main flue and the second main flue; the waste water storage tank is communicated with the first main flue through a waste water pipeline, and the waste water pipeline is connected to the first main flue at the upstream of the bypass flue; the waste water pipeline is connected with an atomizing nozzle which is connected in the first main flue. The utility model discloses can carry out the water spray cooling with the flue gas that gets into bypass flue and waste heat recovery device earlier, make the flue gas temperature control that gets into bypass flue and waste heat recovery device at suitable value, not only can make waste heat recovery system steady operation, and solved the difficult problem of waste water zero release.
Description
Technical Field
The utility model relates to a waste heat recovery technical field, concretely relates to utilize surplus heat to carry out waste water drying's system.
Background
In the industrial waste heat recovery process, rated working conditions are set based on a thermodynamic calibration result, and therefore waste heat recovery equipment is selected and system building is conducted. If the industrial production process changes too much, the original waste heat recovery system cannot adapt to the new industrial production process, and the service life of waste heat recovery equipment is reduced, faults occur frequently, and even the waste heat recovery system cannot operate directly. With the stricter environmental protection policy, environmental protection departments require production enterprises to realize zero discharge of wastewater, and as a waste heat power generation project for large water users, the waste water generated every day is hundreds of tons, so that the environmental protection pressure is very severe, the zero discharge of the wastewater cannot be solved, and the risk of forced shutdown is caused.
Taking a waste heat recovery project of a certain ferrosilicon smelting industry as an example, during project construction, the rated working condition selected by thermal calibration data is that the flue gas temperature is 450 ℃; around 2020, the cooperative enterprises carry out production improvement on 5 submerged arc furnaces owned by the cooperative enterprises, so that the heat consumption of the submerged arc furnaces is increased, which is directly reflected in that the temperature of flue gas at the inlet of a waste heat recovery device is 600-800 ℃, and the amount of the flue gas is increased at the same time; the high temperature flue gas has exceeded the design temperature of boiler, and long-term operation will lead to waste heat recovery equipment life-span to descend, and the trouble is frequent, and can increase the safety risk.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve one kind or several kinds of above-mentioned technical problem, provide an utilize surplus heat to carry out waste water drying's system.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a system for drying waste water by utilizing surplus heat comprises a submerged arc furnace, a waste heat recovery device, a dust remover, a waste water storage tank and a chimney, wherein the submerged arc furnace is communicated with the waste heat recovery device through a first main flue, the waste heat recovery device is communicated with the dust remover through a second main flue, and the dust remover is communicated with the chimney through a third main flue; a bypass flue is arranged on the first main flue, and two ends of the bypass flue are respectively connected and communicated with the first main flue and the second main flue; the waste water storage tank is communicated with the first main flue through a waste water pipeline, and the waste water pipeline is connected to the first main flue at the upstream of the bypass flue; and the waste water pipeline is connected with an atomizing nozzle, and the atomizing nozzle is connected in the first main flue.
The utility model has the advantages that: the utility model discloses an utilize surplus heat to carry out waste water dry system, through set up the bypass flue on first main flue, and set up the waste water pipeline in bypass flue upper reaches, the waste water that utilizes other systems to produce is the working medium, can carry out the water spray cooling with the flue gas that gets into bypass flue and waste heat recovery device earlier, make the flue gas temperature control that gets into bypass flue and waste heat recovery device at suitable value, not only can make waste heat recovery system steady operation, and solved the difficult problem of waste water zero release.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Further, the waste water pipeline is kept away from the one end of waste water storage tank is connected with a plurality of waste water branch pipes, every all be connected with atomizing nozzle on the waste water branch pipe.
The beneficial effect of adopting the further scheme is that: through setting up a plurality of waste water branch pipes, can realize the even spraying cooling of waste water in first main flue.
Further, the atomizing nozzle faces one side of the waste heat recovery device.
Furthermore, a plurality of groups of connecting sites are arranged on the first main flue, each group of connecting sites comprises a plurality of connecting sites, and the plurality of groups of connecting sites are arranged at intervals along the axial direction of the first main flue; and each connecting position is provided with one atomizing nozzle.
Further, the plurality of connecting points of each group are arranged in a circle along the circumferential direction of the first main flue.
Further, the first main flue is connected to the upper part of the waste heat recovery device, and the second main flue is connected to the lower part of the waste heat recovery device.
Furthermore, a waste water pump is arranged on the waste water pipeline, and a fan is arranged on a third main flue between the dust remover and the chimney.
Further, the dust remover is a bag-type dust remover.
Furthermore, a flow regulating valve is arranged on the waste water pipeline, and a temperature sensor is arranged at a flue gas inlet of the waste heat recovery device.
The beneficial effect of adopting the further scheme is that: the temperature sensor can detect the temperature of the flue gas entering the waste heat recovery device, and controls the flow of the waste water sprayed into the first main flue according to the temperature of the flue gas, so that the temperature of the flue gas entering the waste heat recovery device is controllable.
Further, an end of the bypass flue connected to the second main flue is disposed adjacent to an inlet of the dust collector.
Drawings
FIG. 1 is a schematic diagram of a system for drying waste water by utilizing surplus heat of the present invention;
fig. 2 is a schematic view of the arrangement structure of the atomizing nozzle of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a submerged arc furnace; 11. a first main flue; 12. a second main flue; 13. a third main flue; 14. a smoke collecting hood;
2. a waste heat recovery device; 3. a dust remover; 4. a waste water storage tank; 41. a waste water conduit; 42. a waste water pump; 43. an atomizing nozzle; 5. a chimney; 6. a fan; 7. a bypass flue; 8. and (5) factory building.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1 and fig. 2, the system for drying waste water by using surplus heat in this embodiment includes a submerged arc furnace 1, a waste heat recovery device 2, a dust remover 3, a waste water storage tank 4, and a chimney 5, where the submerged arc furnace 1 is communicated with the waste heat recovery device 2 through a first main flue 11, the waste heat recovery device 2 is communicated with the dust remover 3 through a second main flue 12, and the dust remover 3 is communicated with the chimney 5 through a third main flue 13; a bypass flue 7 is arranged on the first main flue 11, and two ends of the bypass flue 7 are respectively connected and communicated with the first main flue 11 and the second main flue 12; the waste water storage tank 4 is communicated with the first main flue 11 through a waste water pipeline 41, and the waste water pipeline 41 is connected to the first main flue 11 at the upstream of the bypass flue 7; an atomizing nozzle 43 is connected to the waste water pipe 41, and the atomizing nozzle 43 is connected in the first flue stack 11.
As shown in fig. 1, a fume collecting hood 14 is provided at the top of the submerged arc furnace 1 of this embodiment, so as to facilitate the collection of the flue gas at the top of the submerged arc furnace 1. The waste heat recovery device 2 can be installed on a factory building 8 and used for recovering waste heat of the factory building 8 used by customers. The waste heat recovery device 2 can adopt the existing equipment.
In a preferred embodiment of this embodiment, one end of the waste water pipeline 41, which is far away from the waste water storage tank 4, is connected with a plurality of waste water branch pipes, and each waste water branch pipe is connected with an atomizing nozzle 43. Through setting up a plurality of waste water branch pipes, can realize the even spraying cooling of waste water in first main flue.
As shown in fig. 1, the atomizing nozzle 43 of the present embodiment faces the side of the waste heat recovery device 2.
As shown in fig. 2, a plurality of groups of connection sites are disposed on the first main flue 11 in this embodiment, each group of connection sites includes a plurality of connection sites, and the plurality of groups of connection sites are arranged at intervals along the axial direction of the first main flue 11; one of said atomizing nozzles 43 is provided at each connection site.
As shown in fig. 2, the plurality of connection points of each group of the present embodiment are arranged in a circle along the circumferential direction of the first flue stack 11.
As shown in fig. 1, the first flue stack 11 of the present embodiment is connected to an upper portion of the heat recovery device 2, and the second flue stack 12 is connected to a lower portion of the heat recovery device 2.
As shown in fig. 1, a waste water pump 42 is disposed on the waste water pipe 41, and a fan 6 is disposed on the third flue 13 between the dust remover 3 and the chimney 5. The fan can overcome the resistance of the system operation.
The dust remover 3 of this embodiment is a bag-type dust remover.
An alternative of this embodiment is that a flow regulating valve is arranged on the waste water pipe 41, and a temperature sensor is arranged at the flue gas inlet of the waste heat recovery device 2. The temperature sensor can detect the temperature of the flue gas entering the waste heat recovery device, and controls the flow of the waste water sprayed into the first main flue according to the temperature of the flue gas, so that the temperature of the flue gas entering the waste heat recovery device is controllable.
As shown in fig. 1, the end of the bypass flue 7 connected to the second main flue 12 of the present embodiment is arranged adjacent to the inlet of the dust separator 3. In the orientation of fig. 1, the end of the bypass flue 7 connected to the second main flue 12 is arranged to the right of the centre of the second main flue 12.
When the system for drying waste water by utilizing surplus heat in the embodiment is used, waste water generated by other systems (such as a waste heat recovery system) is stored in the waste water storage tank, and under the action of a waste water pump, the atomization of the waste water in the first main flue is realized by the atomizing nozzle through the waste water pipeline, and the waste water is evaporated and crystallized under the action of smoke in the first main flue. Waste water evaporation crystallization in first flue, because the velocity of flow in the first flue is higher, the crystallization thing is difficult to remain in the pipeline, gets into waste heat recovery device along with the flue gas, and flue gas velocity of flow is lower and waste heat recovery device's structure reason in the waste heat recovery device relatively, and partial crystallization thing will be in its inside deposit. The lower part of the waste heat recovery device can be provided with an ash removal device, and crystals and particles originally contained in the flue gas in the waste heat recovery device are cleaned regularly. Part of the crystals are driven by the flue gas and enter the bag-type dust collector through the main flue, and the flue gas is systematically dedusted (including the crystals and the original ash in the flue gas), so that the dust content of the discharged flue gas reaches the environmental protection standard, and the standard flue gas is discharged through a chimney. And finally, conveying the ash collected by the waste heat recovery device and the bag type dust collector to a qualified institution for disposal according to the standard of solid waste. When the waste heat recovery device is overhauled and shut down, the flue gas enters the bag type dust collector through the bypass pipeline (without heat preservation), and the waste water pump does not stop at the moment.
The system for drying the waste water by utilizing the surplus heat of the embodiment is characterized in that the bypass flue is arranged on the first main flue, the waste water pipeline is arranged at the upstream of the bypass flue, waste water generated by other systems is used as a working medium, the flue gas entering the bypass flue and the waste heat recovery device can be sprayed with water for cooling, the temperature of the flue gas entering the bypass flue and the waste heat recovery device is controlled to be a proper value, the waste heat recovery system can operate stably, and the problem of zero discharge of the waste water is solved.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
While embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. A system for drying waste water by utilizing surplus heat is characterized by comprising a submerged arc furnace, a waste heat recovery device, a dust remover, a waste water storage tank and a chimney, wherein the submerged arc furnace is communicated with the waste heat recovery device through a first main flue, the waste heat recovery device is communicated with the dust remover through a second main flue, and the dust remover is communicated with the chimney through a third main flue; a bypass flue is arranged on the first main flue, and two ends of the bypass flue are respectively connected and communicated with the first main flue and the second main flue; the waste water storage tank is communicated with the first main flue through a waste water pipeline, and the waste water pipeline is connected to the first main flue at the upstream of the bypass flue; and the waste water pipeline is connected with an atomizing nozzle, and the atomizing nozzle is connected in the first main flue.
2. The system for drying waste water by utilizing surplus heat as claimed in claim 1, wherein a plurality of waste water branch pipes are connected to an end of the waste water pipeline away from the waste water storage tank, and each waste water branch pipe is connected with an atomizing nozzle.
3. The system for drying waste water by using surplus heat according to claim 1, wherein the atomizing nozzle faces to one side of the surplus heat recovery device.
4. The system for drying wastewater by utilizing surplus heat according to claim 1, wherein a plurality of groups of connecting sites are arranged on the first main flue, each group of connecting sites comprises a plurality of connecting sites, and the plurality of groups of connecting sites are arranged at intervals along the axial direction of the first main flue; and each connecting position is provided with one atomizing nozzle.
5. The system for drying wastewater by utilizing surplus heat as claimed in claim 4, wherein the plurality of connecting points of each group are arranged in a circle along the circumference of the first main flue.
6. The system for drying wastewater by using surplus heat according to claim 1, wherein the first main flue is connected to an upper portion of the waste heat recovery device, and the second main flue is connected to a lower portion of the waste heat recovery device.
7. The system for drying waste water by utilizing surplus heat as claimed in claim 1, wherein a waste water pump is arranged on the waste water pipeline, a fan is arranged on a third main flue between the dust remover and the chimney, and a smoke collecting hood is arranged at the top of the submerged arc furnace.
8. The system for drying wastewater by using surplus heat according to claim 1, wherein the dust remover is a bag-type dust remover.
9. The system for drying waste water by utilizing surplus heat according to claim 1, wherein a flow regulating valve is arranged on the waste water pipeline, and a temperature sensor is arranged at a flue gas inlet of the waste heat recovery device.
10. The system for drying wastewater using surplus heat according to claim 1, wherein an end of the bypass flue connected to the second main flue is disposed adjacent to an inlet of the dust remover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222821157.3U CN218673180U (en) | 2022-10-25 | 2022-10-25 | System for utilize surplus heat to carry out waste water drying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222821157.3U CN218673180U (en) | 2022-10-25 | 2022-10-25 | System for utilize surplus heat to carry out waste water drying |
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| Publication Number | Publication Date |
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| CN218673180U true CN218673180U (en) | 2023-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222821157.3U Active CN218673180U (en) | 2022-10-25 | 2022-10-25 | System for utilize surplus heat to carry out waste water drying |
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| CN (1) | CN218673180U (en) |
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2022
- 2022-10-25 CN CN202222821157.3U patent/CN218673180U/en active Active
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