CN214891881U - Flash evaporation heat extraction water taking device for blast furnace slag flushing water - Google Patents
Flash evaporation heat extraction water taking device for blast furnace slag flushing water Download PDFInfo
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- CN214891881U CN214891881U CN202120788314.8U CN202120788314U CN214891881U CN 214891881 U CN214891881 U CN 214891881U CN 202120788314 U CN202120788314 U CN 202120788314U CN 214891881 U CN214891881 U CN 214891881U
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Abstract
The utility model belongs to the technical field of energy saving and emission reduction, concretely relates to hot water intake device is carried in blast furnace slag flushing water flash distillation, include: the flash tank and the heat exchange tank are connected into the same tank body; the flash tank is provided with a hyperbolic wall surface, and a water inlet pipe is arranged at the top end of the hyperbolic wall surface; a liquid removing plate is arranged above the liquid collecting plate; a fixed rod is arranged below the spiral blade, and the spiral blade is arranged on the fixed rod through a shaft sleeve; the outlet of the flash tank is a cold slag water outlet, wherein a slag slurry pump is arranged; a plurality of heat pipes are arranged in the heat pipe exchanger, and the free ends of the heat pipes extend into the tank body of the heat exchange tank; an air extraction opening is arranged on the side wall of the heat exchange tank, and a vacuum pump is installed in the air extraction opening; a condensed water outlet at the opening end of the heat exchange tank, wherein a condensed water pump is arranged; the utility model provides a towards jam, wearing and tearing and the corruption of cinder water in the dividing wall type heat exchanger, the relatively poor problem of equipment reliability. The device can reliably separate steam and liquid, fully utilize heat energy, and simultaneously condensate water can be used as process water, thereby saving water resources.
Description
Technical Field
The utility model relates to an energy saving and emission reduction technical field, concretely relates to water intake device is carried in blast furnace slag flushing water flash distillation.
Background
At present, most of blast furnace slag washing water waste heat recovery mainly adopts a dividing wall type heat exchanger mode, and because slag washing water contains various impurities, the mode easily causes blockage, abrasion and corrosion of the heat exchanger, and the equipment reliability is poor. Therefore, a new technology for recovering the waste heat of the slag flushing water is urgently needed.
Disclosure of Invention
An object of the utility model is to provide a hot water intake device is carried in blast furnace slag flushing water flash distillation to solve the problem of proposing among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a hot water intake device is carried in blast furnace slag flushing water flash distillation which characterized in that: the flash tank and the heat exchange tank are connected into the same tank body;
the flash tank is provided with a hyperbolic wall surface, and a water inlet pipe is arranged at the top end of the hyperbolic wall surface; a liquid removing plate is arranged above the hyperbolic wall surface; a fixed rod is arranged below the hyperbolic wall surface, and the helical blade is arranged on the fixed rod through a shaft sleeve;
the outlet of the flash tank is a cold slag water outlet which is a tapered flow passage, wherein a slag slurry pump is arranged;
a plurality of heat pipes are arranged in the heat pipe exchanger, and the free ends of the heat pipes extend into the tank body of the heat exchange tank; an air exhaust port is arranged on the side wall of the heat exchange tank, and a vacuum pump is installed at the air exhaust port;
the opening end of the heat exchange tank is provided with a condensed water outlet which is a tapered runner, and a condensed water pump is arranged in the tapered runner.
The flash evaporation heat extraction water taking device for the blast furnace slag flushing water comprises two or more water inlet pipes which are uniformly arranged on the hyperbolic wall surface, and the water inlet pipes are arranged on the hyperbolic wall surface 10 in a downward inclination angle of 45 degrees and a left inclination angle of 45 degrees.
The flash evaporation heat extraction water taking device for the blast furnace slag flushing water comprises 3 water inlet pipes.
The flash evaporation heat extraction water taking device for the blast furnace slag flushing water is characterized in that 6 to 12 spiral blades are arranged; the rotation angle is set to 30 to 60 degrees.
The hot water intake device is extracted to blast furnace sluicing water flash distillation as above, wherein, this inlet tube is connected to the sediment pond through the sediment stuff pump, and cold sediment water outlet is connected to the wastewater disposal basin.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a blast furnace slag flushing water flash evaporation heat extraction water intake device, adopts the mode of slag flushing water flash evaporation, introduces the slag flushing water into the flash tower in the negative pressure state, takes place the flash evaporation process, produces a large amount of negative pressure flash evaporation steam, and equipment such as heat exchanger or heat pump is passed through to clean negative pressure flash evaporation steam, has accomplished the condensation and has released heat, has realized thermal recycle, and the moisture content that vapor condensation formed can effectively reduce the whole water consumption of unit; therefore, the utility model provides a towards jam, wearing and tearing and the corruption of cinder water in the dividing wall type heat exchanger, the relatively poor problem of equipment reliability. The device can reliably separate steam and liquid, fully utilize heat energy, and simultaneously condensate water can be used as process water, thereby saving water resources.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1 heat pipe heat exchanger, 2 heat pipes, 3 vacuum pumps, 41 slurry pumps, 42 condensate pumps, 5 fixed rods, 6 helical blades, 7 liquid removing plates, 8 flash tanks, 9 heat exchange tanks, 10 hyperbolic wall surfaces, 11 water inlet pipes, 12 cold slag water outlets and 13 condensate water outlets.
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 work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", 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 referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Like fig. 1, the utility model provides a hot water intake device is carried in blast furnace slag flushing water flash distillation, flash tank 8 and heat transfer jar 9 pass through the pipe connection and become the same jar of body of pi type structure, and flash tank 8 plays the flash vaporization effect, and heat transfer jar 9 plays condensation heat transfer effect, so ingenious design makes flash distillation and heat transfer go on at same monoblock internal, has reduced the energy loss that steam caused because of the pipe transportation.
The flash tank 8 is provided with a hyperbolic wall surface 10, three equal-diameter water inlet pipes 11 are uniformly arranged at the top end of the hyperbolic curve, a water inlet pipeline is provided with a downward inclination angle and a left inclination (or right inclination) angle, preferably 30-70 degrees, and the downward inclination angle of 45 degrees and the left inclination angle of 45 degrees are selected to be installed on the hyperbolic wall surface 10 in the best embodiment of the utility model, so that the impact of slag water on the wall surface is reduced; the slag flushing water enters through the water inlet pipe 11, under the combined action of the water inlet pipeline and the hyperbolic wall surface, the water enters to form impact atomization to descend or spirally descend along the hyperbolic curve of the tank body, the retention time of the slag flushing water in the tank body of the flash tank 8 is prolonged through the design, and a part of slag water can be atomized, so that the flash evaporation efficiency is increased.
The liquid removing plate 7 is arranged above the hyperbolic wall surface 10, and as the slag flushing water is corrosive, in order to prevent the liquid removing plate 7 from being corroded, the liquid removing plate 7 is manufactured by adopting a process of lining polypropylene (PP) and Polytetrafluoroethylene (PTFE) in a steel body, and has high structural strength and corrosion resistance. When the gas phase passes through the liquid removal plate 7 with the polytetrafluoroethylene filler, large liquid drops are intercepted and return to the flash tank under the action of gravity, and the gas phase continues to enter the condenser for condensation.
A fixed rod 5 is arranged below the hyperbolic wall surface 10, and two ends of the fixed rod 5 are welded on the wall of the flash tank 8; the plurality of helical blades 6 are arranged on the fixed rod 5 through shaft sleeves, and the helical blades 6 are connected through a rotating rod. The slag flushing water can be in a spiral descending state under the action of the hyperbolic wall surface 10, pressure is generated to reduce the flash evaporation efficiency, the spiral state of the slag flushing water is successfully destroyed by the spiral blade 6, the slag flushing water is dispersed, the atomization effect of the slag flushing water and the detention time of the slag flushing water in the flash tank 8 tank body are increased, and the flash evaporation efficiency is increased.
The helical blades 6 are arranged in 6 to 12 pieces; the rotation angle is set to 30 to 60 degrees, preferably 35 degrees. The utility model discloses an in one of them embodiment, 6 helical blade 6 equidistant range, the rotation angle is 40, and the mounting means is: the helical blade 6 is welded on the shaft sleeve, and the shaft sleeve is sleeved on the fixed rod 5 and fixed by the fixed nut.
The design of the hyperbolic wall surface ensures the uniformity of the wall surface pressure on one hand, and meanwhile, the strength and the deformation resistance of the curved surface structure are very strong, so that the damage of slag flushing water to the wall surface can be reduced, and the service life of the tank body is prolonged; on one hand, the turbulent flow of the inlet water can be reduced, the detention time of the slag flushing water in the tank can be increased, and the flash evaporation efficiency can be increased. Liquid does tangential motion along the circumferential direction through the hyperboloid structure under the action of gravity acceleration, and this part of liquid can beat on the rotating blade, because liquid has radial acceleration, can produce the atomizing effect when beating on the blade. Meanwhile, the spiral blades are pushed to rotate, so that the slag flushing water is dispersed, the residence time of the slag flushing water is prolonged, and the flash evaporation efficiency is improved.
The export of flash tank 8 is cold sediment water export 12, cold sediment water export 12 is the tapered runner, wherein sets up the sediment stuff pump 41, and the sluicing water inlet tube 11 is connected to the sediment pond through the sediment stuff pump, and cold sediment water exit linkage to wastewater disposal basin. The tapered flow passage can increase the flow speed of the cold slag water and prevent solid particles in the slag water from depositing in the pipeline.
The flash steam enters the heat exchange tank 9.
A plurality of heat pipes 2 are arranged in the heat pipe exchanger 1, the free ends of the heat pipes 2 extend into the tank body of the heat exchange tank 9, and cooling water exchanges heat with flash steam through the heat pipes 2 in the heat pipe exchanger 1.
An air exhaust port is arranged on the side wall of the heat exchange tank 9, and a vacuum pump 3 is installed at the air exhaust port.
The open end of the heat exchange tank 9 is a condensed water outlet 13 which is a tapered flow passage, and a condensed water pump 42 is arranged in the tapered flow passage.
The utility model discloses at the during operation, the slag flushing water that takes out from the sediment pond is sent into the jar internal of flash tank 8 by thick liquid pump 41, and the slag flushing water that gets into the jar body flows or forms a small part and strikes the atomizing and descend along jar body hyperbola downward flow under the effect of water inlet angle with the hyperbola wall. The slag flushing water which is not atomized pushes the helical blade 6 to rotate, so that the detention time of the slag flushing water in the tank is prolonged, and the flash evaporation efficiency is increased.
The flash steam is condensed on the surface of the heat pipe 2 of the heat pipe exchanger 1 to release heat, and the condensed liquid drops of the flash steam fall into the lower part of the heat exchange tank 9 under the action of gravity and are sent out through a condensate pump 42. The condensed water can be used as process water for other links.
The heat released by the flash steam is sent to the heat pipe exchanger 1 by the heat pipe 2, and the cold water at the inlet is heated into hot water.
A steam extraction port is arranged below the heat pipe 2, and the non-condensable gas generated in the flash evaporation process is extracted out of the tank body by a vacuum pump 3 to maintain the negative pressure environment in the tank body. The slag flushing water passing through the bottom filter tank cannot generate steam under normal pressure, and the vacuum pump 3 is arranged to maintain the negative pressure environment of the tank body so that the slag flushing water boils under the condition of low pressure of 100 ℃ to generate steam, thereby achieving the purpose of heat extraction.
After the flushing slag water is subjected to flash evaporation, the temperature is greatly reduced, the flushing slag water falls into the lower part of the cavity of the flash tank 8 and is sent out to a slag water pool by a slag pump 41.
The utility model provides a flash evaporation heat extraction water intake device for blast furnace slag flushing water liquid, which has simple system and strong universality, achieves the purpose of deep waste heat recovery by recovering the heat of the slag flushing water, and improves the energy utilization efficiency; a large amount of water vapor is extracted from the blast furnace slag flushing water, and condensed water formed after the water vapor is condensed has excellent water quality and can be used as process water supplement to reduce water consumption; meanwhile, the flash steam of the blast furnace slag flushing water and the heat exchange medium exchange heat efficiently, the structure is compact, and the reliability of the device is high. The damage of a single heat pipe does not influence the overall operation and the overall heat exchange effect of the heat pipe exchanger in the operation process.
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 (5)
1. The utility model provides a hot water intake device is carried in blast furnace slag flushing water flash distillation which characterized in that: the flash tank and the heat exchange tank are connected into the same tank body;
the flash tank is provided with a hyperbolic wall surface, and a water inlet pipe is arranged at the top end of the hyperbolic wall surface; a liquid removing plate is arranged above the hyperbolic wall surface; a fixed rod is arranged below the hyperbolic wall surface, and the helical blade is arranged on the fixed rod through a shaft sleeve;
the outlet of the flash tank is a cold slag water outlet which is a tapered flow passage, wherein a slag slurry pump is arranged;
a plurality of heat pipes are arranged in the heat pipe exchanger, and the free ends of the heat pipes extend into the tank body of the heat exchange tank; an air exhaust port is arranged on the side wall of the heat exchange tank, and a vacuum pump is installed at the air exhaust port;
the opening end of the heat exchange tank is provided with a condensed water outlet which is a tapered runner, and a condensed water pump is arranged in the tapered runner.
2. The flash evaporation heat extraction water intake device of blast furnace slag washing water according to claim 1, wherein the number of the water inlet pipes is two or more, the water inlet pipes are uniformly arranged on the hyperbolic wall surface, and the water inlet pipes are arranged on the hyperbolic wall surface 10 with a 45-degree downward inclination and a 45-degree left inclination.
3. The flash evaporation heat extraction water intake device for blast furnace slag flushing water according to claim 2, wherein the number of the water inlet pipes is 3.
4. The flash evaporation heat extraction water taking device for blast furnace slag flushing water according to claim 1, wherein the spiral blades are arranged into 6 to 12 pieces; the rotation angle is set to 30 to 60 degrees.
5. The blast furnace slag washing water flash evaporation hot water extraction device as claimed in claim 1, wherein the water inlet pipe is connected to the slag pool through a slag slurry pump, and the cold slag water outlet is connected to the waste water pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120788314.8U CN214891881U (en) | 2021-04-18 | 2021-04-18 | Flash evaporation heat extraction water taking device for blast furnace slag flushing water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120788314.8U CN214891881U (en) | 2021-04-18 | 2021-04-18 | Flash evaporation heat extraction water taking device for blast furnace slag flushing water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214891881U true CN214891881U (en) | 2021-11-26 |
Family
ID=78948300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120788314.8U Expired - Fee Related CN214891881U (en) | 2021-04-18 | 2021-04-18 | Flash evaporation heat extraction water taking device for blast furnace slag flushing water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214891881U (en) |
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2021
- 2021-04-18 CN CN202120788314.8U patent/CN214891881U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211126 |