CN202793091U - Vapor condensed water one-effect flash utilization system of air heating coil device - Google Patents
Vapor condensed water one-effect flash utilization system of air heating coil device Download PDFInfo
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- CN202793091U CN202793091U CN 201220483735 CN201220483735U CN202793091U CN 202793091 U CN202793091 U CN 202793091U CN 201220483735 CN201220483735 CN 201220483735 CN 201220483735 U CN201220483735 U CN 201220483735U CN 202793091 U CN202793091 U CN 202793091U
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Abstract
The utility model relates to a vapor condensed water one-effect flash utilization device of an air heating coil group. A condensed water coil heat exchanger and a plurality of vapor coil heat exchangers are sequentially arranged inside the air heating coil group along an air flowing direction; the inlets of the vapor coil heat exchangers are respectively connected with a main vapor pipe through a main vapor valve, and the outlets of the vapor coil heat exchangers are respectively connected with drain valves and high-temperature condensed water check valves; the outlet of each high-temperature condensed water check valve is connected with a high-temperature condensed water pipe; the outlet of the high-temperature condensed water pipe is connected with a flash tank; flash vapor of the flash tank is connected with the vapor coil heat exchangers in the inlet sections; and the outlets of the drain valves of the vapor coil heat exchangers in the inlet sections are respectively provided with low-temperature condensed water check valves; the outlet of each low-temperature condensed water check valve is connected with a low-temperature condensed water pipe; the low-temperature condensed water pipe and condensed water of the flash tank are connected with the condensed water coil heat exchanger and then enter into the condensed water pump; and the outlet of the condensed water pump is connected with a condensed water recovery device. By utilizing the vapor condensed water one-effect flash utilization device provided by the utility model, the vapor utilization efficiency can be further improved.
Description
Technical field
The utility model relates to a kind of thermal device, particularly a kind of air heat coil pipe group steam condensate (SC) one effect flash distillation use device.
Background technology
Air heat coil pipe group generally includes a plurality of steam pipe coil heat exchangers arranged side by side, the import of each steam pipe coil heat exchanger links to each other with main steam pipe by main steam valve respectively, the outlet of each steam pipe coil heat exchanger is respectively equipped with drain valve, and the outlet of each drain valve accesses respectively total condensate pipe.When vapor stream is crossed each steam pipe coil heat exchanger and air heat-exchange and after discharging latent heat, be condensed into the high-temperature condensation water under the uniform pressure, high-temperature condensation water enters total condensate pipe through each drain valve; Meanwhile, cold air enters from an end of air heat coil pipe group, the outer surface of each steam pipe coil heat exchanger of flowing through, through with steam heat-exchanging after, become hot-air and flow out from the other end of air heat coil pipe group.
After high-temperature condensation water enters total condensate pipe, along the continuous pressure drop of journey, part high-temperature condensation water flash-off of steam, more than 1000 times of volumetric expansions, flow velocity increases about 10 times, and causing prevailing in total condensate pipe is not condensed water, but flash-off steam very easily forms vapour locking; The back pressure of drain valve increases after the vapour locking, and drain valve two ends pressure reduction reduces, and the drain valve discharge capacity descends, the condensed water that causes producing in the steam pipe coil heat exchanger can not in time be got rid of, heat exchanger efficiency descends, and hot air temperature can not reach technological requirement, produces thereby impact is normal.Produce for guaranteeing, often need to open the bypass cutoff valve in parallel with drain valve and carry out in linely, the result is, steam leaks by the bypass cutoff valve when discharging condensed water, and steam heads on condensed water and flows at total condensate pipe, to overcome the vapour locking resistance; Though guaranteed production, steam utilization reduces, and the unit product steam consumption increases.Therefore existing device or can not normally produce, otherwise waste of steam is serious, and the condensed water sensible heat is not fully used.
On June 13rd, 2012, publication number is that the Chinese invention patent application of CN102494546A discloses a kind of air heat coil pipe group condensation water residual heat one effect flash distillation use device, comprises main steam pipe, air heat coil pipe group, flash tank and condensate pump; Air heat coil pipe group comprises housing, one end of housing is provided with cool air inlet, the other end is provided with hot air outlet, be provided with successively entrance coil heat exchanger and outlet section coil heat exchanger along air-flow direction in the housing, the import of each coil heat exchanger links to each other with main steam pipe by main steam valve respectively, the outlet of each coil heat exchanger is connected with respectively drain valve, and the outlet of each drain valve is connected with respectively high-temperature condensation water stop valve behind the drain valve; The outlet of high-temperature condensation water stop valve accesses respectively the high-temperature condensation water pipe behind each drain valve, the high-temperature condensation water import of the outlet access flash tank of high-temperature condensation water pipe, the outlet of the level pressure overflow valve of flash tank is by the entrance of flash-off steam pipe and flash-off steam stop valve access entrance coil heat exchanger, the drain valve outlet of entrance coil heat exchanger is respectively equipped with cryogenic condensation water stop valve, and the high-temperature condensation water stop valve is connected in parallel behind cryogenic condensation water stop valve and the drain valve; The outlet of each cryogenic condensation water stop valve accesses respectively the cryogenic condensation water pipe, and the cryogenic condensation water out of the outlet of cryogenic condensation water pipe and flash tank all accesses condensate pump, condensed water delivery side of pump access condensate water recovery device.The cryogenic condensation water of the condensed water of flash tank bottom and the discharging of entrance coil heat exchanger still has more heat, can further be recycled.
The utility model content
The purpose of this utility model is, overcomes problems of the prior art, and a kind of air heat coil pipe group steam condensate (SC) one effect flash distillation use device is provided, and can further improve the utilization ratio of steam, reduces the energy consumption of unit product.
For solving above technical problem, air heat coil pipe group steam condensate (SC) one effect flash distillation use device of the present utility model comprises main steam pipe, air heat coil pipe group, flash tank and condensate pump; Described air heat coil pipe group comprises housing, one end of described housing is provided with cool air inlet, the other end is provided with hot air outlet, be provided with successively entrance steam pipe coil heat exchanger and outlet section steam pipe coil heat exchanger along air-flow direction in the described housing, the import of each steam pipe coil heat exchanger links to each other with described main steam pipe by main steam valve respectively, the outlet of each steam pipe coil heat exchanger is connected with respectively drain valve, and the outlet of each drain valve is connected with respectively high-temperature condensation water stop valve behind the drain valve; The outlet of high-temperature condensation water stop valve accesses respectively the high-temperature condensation water pipe behind each drain valve, the outlet of high-temperature condensation water pipe accesses the high-temperature condensation water import of described flash tank, the outlet of the level pressure overflow valve of described flash tank accesses the entrance of described entrance steam pipe coil heat exchanger by flash-off steam pipe and flash-off steam stop valve, the drain valve outlet of described entrance steam pipe coil heat exchanger is respectively equipped with cryogenic condensation water stop valve, and the high-temperature condensation water stop valve is connected in parallel behind described cryogenic condensation water stop valve and the described drain valve; The outlet of each cryogenic condensation water stop valve accesses respectively the cryogenic condensation water pipe, it is characterized in that: the most close cool air inlet place is provided with the condense water disk heat exchange of heat pipe in the housing of described air heat coil pipe group, the cryogenic condensation water out of the outlet of described cryogenic condensation water pipe and described flash tank all accesses the entrance of described condense water disk heat exchange of heat pipe, the outlet of described condense water disk heat exchange of heat pipe accesses the entrance of described condensate pump, described condensed water delivery side of pump access condensate water recovery device.
With respect to prior art, the utility model has been obtained following beneficial effect: during (1) operation, open the main steam valve of outlet section steam pipe coil heat exchanger import, high-temperature condensation water stop valve behind the drain valve of unlatching outlet section steam pipe coil heat exchanger exit, close simultaneously the main steam valve of entrance steam pipe coil heat exchanger import, close high-temperature condensation water stop valve behind the drain valve of entrance steam pipe coil heat exchanger exit, open the flash-off steam stop valve of entrance steam pipe coil heat exchanger import, open the cryogenic condensation water stop valve of entrance steam pipe coil heat exchanger exit, under this state, outlet section steam pipe coil heat exchanger uses main steam, entrance steam pipe coil heat exchanger uses flash-off steam, flash-off steam is from flash tank, and the pressure of flash-off steam is set by the level pressure overflow valve of flash drum overhead.Use the high-temperature condensation water of the outlet section steam pipe coil heat exchanger discharging of main steam still to have higher temperature and pressure, enter the flash distillation of flash tank diffusion by the high-temperature condensation water pipe, produce the flash-off steam that temperature and pressure is lower than main steam, flash-off steam is sent back to entrance steam pipe coil heat exchanger, with discharge latent heat after the cold air heat exchange, and be condensed into cryogenic condensation water, temperature and the overbottom pressure of the condensed water in the flash tank after the flash distillation are lower, enter condense water disk heat exchange of heat pipe continuation heat release and further reduce temperature, then be pressurised into subcooled water by condensate pump, along the Cheng Buzai flash distillation, avoided vapour locking; And condensate temperature is lower, and thermal loss is less in the course of conveying.(2) in air heat coil pipe group, the low temperature cold air that has just entered is at first in the heat exchange of condense water disk heat exchange of heat pipe, although the temperature of condensed water is lower than flash steam in the condense water disk heat exchange of heat pipe, because this moment, air themperature was minimum, there is the larger temperature difference between condensed water and the cold air, still has good heat transfer effect; Then the air after the preheating carries out heat exchange at entrance steam pipe coil heat exchanger and flash-off steam, the temperature of flash-off steam is slightly low than main steam, because this moment, air themperature was still low, there is the larger temperature difference between flash-off steam and the cold air, have good heat transfer effect; Along with flowing to the port of export, air themperature progressively gets a promotion, carry out heat exchange at outlet section steam pipe coil heat exchanger and main steam this moment, the temperature of main steam is higher, although this moment, the temperature of air got a promotion, but and still have the larger temperature difference between the main steam, and still having kept good heat transfer effect, the mode of this countercurrent flow has totally kept very high heat exchange efficiency.(3) can also close as required the import of entrance steam pipe coil heat exchanger the flash-off steam stop valve, close the cryogenic condensation water stop valve of entrance steam pipe coil heat exchanger exit, open the main steam valve of entrance steam pipe coil heat exchanger import, high-temperature condensation water stop valve behind the drain valve of unlatching entrance steam pipe coil heat exchanger exit, under this state, entrance steam pipe coil heat exchanger also uses main steam.(4) quantity of the steam pipe coil heat exchanger of the cool air inlet section of use flash-off steam can be adjusted online by high-temperature condensation water stop valve behind main steam valve, flash-off steam stop valve, the drain valve and the cryogenic condensation water stop valve in parallel with high-temperature condensation water stop valve behind the drain valve; The quantity of the steam pipe coil heat exchanger of the hot air outlet section of use main steam can be adjusted online by high-temperature condensation water stop valve behind main steam valve, the drain valve; The main steam valve of certain entrance steam pipe coil heat exchanger is opened, the high-temperature condensation water stop valve is opened behind the drain valve, the flash-off steam stop valve is closed, when cryogenic condensation water stop valve is closed then this steam pipe coil heat exchanger use main steam, the main steam valve of certain entrance steam pipe coil heat exchanger cuts out, the high-temperature condensation water stop valve is closed behind the drain valve, the flash-off steam stop valve is opened, when cryogenic condensation water stop valve is opened then this steam pipe coil heat exchanger use flash-off steam.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail, accompanying drawing only provides reference and explanation usefulness, and is non-in order to limit the utility model.
Fig. 1 is the schematic diagram of the utility model air heat coil pipe group steam condensate (SC) one effect flash distillation use device.
Among the figure: 1 main steam pipe; 2 air heat coil pipe groups; The 2a cool air inlet; The 2b hot air outlet; 3 steam pipe coil heat exchangers; The 3a main steam valve; 3b flash-off steam stop valve; The 3c drain valve; High-temperature condensation water stop valve behind the 3a ' drain valve; 3b ' cryogenic condensation water stop valve; 4a high-temperature condensation water pipe; 4b cryogenic condensation water pipe; 5 flash tanks; The import of 5a high-temperature condensation water; 5b level pressure overflow valve; 5c cryogenic condensation water out; 6 flash-off steam pipes; 7 condensate pumps; 7a pump vapor interface; The 7b pump intake; The 7c pump discharge; 8 condensate water recovery devices.
The specific embodiment
As shown in Figure 1, the utility model air heat coil pipe group steam condensate (SC) one effect flash distillation use device comprises main steam pipe 1, air heat coil pipe group 2, flash tank 5 and condensate pump 7.Air heat coil pipe group 2 comprises housing, one end of housing is provided with cool air inlet 2a, the other end is provided with hot air outlet 2b, be provided with successively condense water disk heat exchange of heat pipe, entrance steam pipe coil heat exchanger and outlet section steam pipe coil heat exchanger along air-flow direction in the housing, the import of each steam pipe coil heat exchanger 3 links to each other with main steam pipe 1 by main steam valve 3a respectively, and the outlet of each steam pipe coil heat exchanger 3 is connected with respectively high-temperature condensation water stop valve 3a ' behind the front high-temperature condensation water stop valve of drain valve, drain valve 3c, the drain valve; The outlet of high-temperature condensation water stop valve 3a ' accesses respectively high-temperature condensation water pipe 4a behind each drain valve, the high-temperature condensation water import 5a of the outlet access flash tank 5 of high-temperature condensation water pipe 4a, the outlet of the level pressure overflow valve 5b of flash tank 5 is by the entrance of flash-off steam pipe 6 and flash-off steam stop valve 3b access entrance steam pipe coil heat exchanger, and high-temperature condensation water stop valve 3a ' was connected in parallel after the drain valve outlet of entrance steam pipe coil heat exchanger was respectively equipped with cryogenic condensation water stop valve 3b ' and drain valve; The outlet of each cryogenic condensation water stop valve 3b ' accesses respectively cryogenic condensation water pipe 4b, the cryogenic condensation water out 5c of the outlet of cryogenic condensation water pipe 4b and flash tank 5 all accesses the entrance of condense water disk heat exchange of heat pipe, the pump intake 7b of the outlet access condensate pump 7 of condense water disk heat exchange of heat pipe, the pump discharge 7c access condensate water recovery device 8 of condensate pump 7.
The condensate pump 7 preferred steam-operating condensate pumps that adopt, main steam pipe 1 is connected with the pump vapor interface 7a of steam-operating condensate pump by main steam valve 3a.
This flash distillation use device is when work, open the main steam valve 3a of outlet section steam pipe coil heat exchanger import, high-temperature condensation water stop valve 3a ' behind condensed water stop valve and the drain valve before the drain valve of unlatching outlet section steam pipe coil heat exchanger exit, close simultaneously the main steam valve 3a of entrance steam pipe coil heat exchanger import, close high-temperature condensation water stop valve 3a ' behind the drain valve of entrance steam pipe coil heat exchanger exit, open the flash-off steam stop valve 3b of entrance steam pipe coil heat exchanger import, open the front condensed water stop valve of drain valve of entrance steam pipe coil heat exchanger exit, open the cryogenic condensation water stop valve 3b ' of entrance steam pipe coil heat exchanger exit, under this state, outlet section steam pipe coil heat exchanger uses main steam, entrance steam pipe coil heat exchanger uses flash-off steam, flash-off steam is from flash tank 5, and the pressure of flash-off steam is set by the level pressure overflow valve 5b at flash tank 5 tops.
Use the high-temperature condensation water of the outlet section steam pipe coil heat exchanger discharging of main steam still to have higher temperature and pressure, enter flash tank 5 diffusion flash distillations by high-temperature condensation water pipe 4a, produce the flash-off steam that temperature and pressure is lower than main steam, flash-off steam is sent back to entrance steam pipe coil heat exchanger, with discharge latent heat after the cold air heat exchange, and be condensed into cryogenic condensation water, cryogenic condensation water enters the condense water disk heat exchange of heat pipe to be continued to be pressurised into subcooled water by condensate pump 7 after the heat release and is sent to condensate water recovery device 8, along the Cheng Buzai flash distillation, avoided vapour locking, and condensate temperature is lower, and thermal loss is less in the course of conveying.
In the production, can also close the flash-off steam stop valve 3b of entrance steam pipe coil heat exchanger import and the cryogenic condensation water stop valve 3b ' of outlet, open the main steam valve 3a of entrance steam pipe coil heat exchanger import, high-temperature condensation water stop valve 3a ' behind condensed water stop valve, the drain valve before the drain valve of unlatching entrance steam pipe coil heat exchanger exit, and this flash distillation use device can be converted to common air heat coil pipe group use.Can also close simultaneously as required main steam valve 3a, flash-off steam stop valve 3b and the front condensed water stop valve of drain valve of certain steam pipe coil heat exchanger, end the operation of this steam pipe coil heat exchanger.
The above only is the better possible embodiments of the utility model, and is non-so limit to scope of patent protection of the present utility model.In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.
Claims (1)
1. air heat coil pipe group steam condensate (SC) one an effect flash distillation use device comprises main steam pipe, air heat coil pipe group, flash tank and condensate pump; Described air heat coil pipe group comprises housing, one end of described housing is provided with cool air inlet, the other end is provided with hot air outlet, be provided with successively entrance steam pipe coil heat exchanger and outlet section steam pipe coil heat exchanger along air-flow direction in the described housing, the import of each steam pipe coil heat exchanger links to each other with described main steam pipe by main steam valve respectively, the outlet of each steam pipe coil heat exchanger is connected with respectively drain valve, and the outlet of each drain valve is connected with respectively high-temperature condensation water stop valve behind the drain valve; The outlet of high-temperature condensation water stop valve accesses respectively the high-temperature condensation water pipe behind each drain valve, the outlet of high-temperature condensation water pipe accesses the high-temperature condensation water import of described flash tank, the outlet of the level pressure overflow valve of described flash tank accesses the entrance of described entrance steam pipe coil heat exchanger by flash-off steam pipe and flash-off steam stop valve, the drain valve outlet of described entrance steam pipe coil heat exchanger is respectively equipped with cryogenic condensation water stop valve, and the high-temperature condensation water stop valve is connected in parallel behind described cryogenic condensation water stop valve and the described drain valve; The outlet of each cryogenic condensation water stop valve accesses respectively the cryogenic condensation water pipe, it is characterized in that: the most close cool air inlet place is provided with the condense water disk heat exchange of heat pipe in the housing of described air heat coil pipe group, the cryogenic condensation water out of the outlet of described cryogenic condensation water pipe and described flash tank all accesses the entrance of described condense water disk heat exchange of heat pipe, the outlet of described condense water disk heat exchange of heat pipe accesses the entrance of described condensate pump, described condensed water delivery side of pump access condensate water recovery device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220483735 CN202793091U (en) | 2012-09-21 | 2012-09-21 | Vapor condensed water one-effect flash utilization system of air heating coil device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220483735 CN202793091U (en) | 2012-09-21 | 2012-09-21 | Vapor condensed water one-effect flash utilization system of air heating coil device |
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| Publication Number | Publication Date |
|---|---|
| CN202793091U true CN202793091U (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220483735 Expired - Fee Related CN202793091U (en) | 2012-09-21 | 2012-09-21 | Vapor condensed water one-effect flash utilization system of air heating coil device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482775A (en) * | 2014-12-10 | 2015-04-01 | 张正礼 | Flash evaporation power water drainage pump |
| CN111219999A (en) * | 2019-12-04 | 2020-06-02 | 天津渤化永利化工股份有限公司 | Condensed water recovery system for ammonium refining process and application thereof |
-
2012
- 2012-09-21 CN CN 201220483735 patent/CN202793091U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482775A (en) * | 2014-12-10 | 2015-04-01 | 张正礼 | Flash evaporation power water drainage pump |
| CN104482775B (en) * | 2014-12-10 | 2016-08-10 | 张正礼 | Flash distillation power drainage pump |
| CN111219999A (en) * | 2019-12-04 | 2020-06-02 | 天津渤化永利化工股份有限公司 | Condensed water recovery system for ammonium refining process and application thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| 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: 20130313 Termination date: 20170921 |