CN202884883U - Inner drying steam flash steaming two-purpose heat exchange device - Google Patents
Inner drying steam flash steaming two-purpose heat exchange device Download PDFInfo
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- CN202884883U CN202884883U CN 201220530301 CN201220530301U CN202884883U CN 202884883 U CN202884883 U CN 202884883U CN 201220530301 CN201220530301 CN 201220530301 CN 201220530301 U CN201220530301 U CN 201220530301U CN 202884883 U CN202884883 U CN 202884883U
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Abstract
The utility model relates to an inner drying steam flash steaming two-purpose heat exchange device. A diverter is arranged in a liquid phase space of a water bath type saturated steam generator, a steam drying heat exchanger is arranged in a steam phase space, and superheated steam enters the steam drying heat exchanger and the diverter in sequence through a pressure control valve, the steam flowing out of the diverter exchanges heat with water in the liquid phase space, and then the cooled steam becomes wet saturated steam and overflows upward. The wet saturated steam goes through a main steam heat exchanger and becomes dry saturated steam, the dry saturated steam enters a steam heat exchanger, heats materials for a second time and becomes high-temperature condensed water. The high-temperature condensed water produces flash steam after flash evaporation, and the flash steam heats the materials for a first time in a flash steam heat exchanger. The flash steam is condensed and becomes condensed water, the condensed water enters a water storage tank and is pumped in the saturated steam generator through a water-filling pump. The opening degree of the pressure control valve is adjusted through a programmable logic controller (PLC) according to the temperature of a material outlet. By means of the inner drying steam flash steaming two-purpose heat exchange device, gradient utilization of steam heat energy is achieved, the steam energy is guaranteed to be completely utilized, and energy efficiency is improved.
Description
Technical field
The utility model relates to a kind of steam heat exchanger, particularly a kind of inner drying steam flash distillation two effect heat-exchanger rigs.
Background technology
During indirect heat exchange, the saturated vapor heat exchange efficiency is higher than superheated steam, and the degree of superheat is higher, and heat exchange efficiency is lower.When only having the superheated steam source, then need superheated steam is carried out desuperheat, reduce the degree of superheat.General steam temp lowering device such as atomizing attemperator, the non-contact attemperator etc. of adopting, the degree of superheat is lower behind the desuperheat, and water entrained by steam is more serious, and steam quality is poorer.If vapor (steam) temperature need to be down to required saturation temperature corresponding to steam pressure of using, then usually to use the water-bath type saturated steam generator, be called again the water-bath type steam temp lowering device.
The cylindrical shell bottom of water-bath type saturated steam generator is liquid Space, cylindrical shell top is vapor phase space, the roof of vapor phase space is provided with water-bath type saturated steam generator exhaust steam valve, be provided with current divider in the liquid Space, overheated steam pipe stretches in the water-bath type saturated steam generator and is connected with current divider, the sidewall of water-bath type saturated steam generator is equipped with water level and takes into account overflow valve, pressure probe is installed on the roof, the moisturizing delivery side of pump links to each other with the bottom of water-bath type saturated steam generator, and replenishes an amount of condensed water according to the water level control signal of water-level gauge in the water-bath type saturated steam generator.Pressure gauge and pressure-control valve are installed on the overheated steam pipe, and the saturated vapor pressure force signal that pressure probe records offers the PLC controller, the aperture of PLC controller controlled pressure control valve.Superheated steam flows out from current divider, becomes wet saturated steam through the water heat exchange cooling with liquid Space and upwards overflows, from the water-bath type saturated steam generator exhaust steam valve outflow of roof.The weak point of existing water-bath type saturated steam generator is: the moisture content in the saturated vapor is higher, and steam quality is poor.
After the vapor heat exchanger heat exchange, steam discharges latent heat, and is condensed into the high-temperature condensation water under the uniform pressure, and high-temperature condensation water enters condensate pipe through drain valve.After high-temperature condensation water enters 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, 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 hydrophobic discharge capacity descends, and the condensed water that causes producing in the heat exchanger can not in time be got rid of, and heat exchanger efficiency descends, and temperature of charge can not reach technological requirement, produces thereby impact is normal.Produce for guaranteeing, often need to open the stop valve in parallel with drain valve and carry out in linely, the steam pressure that stop valve leaks has been offset the vapour locking resistance; Though guaranteed production, steam utilization reduces, and the unit product steam consumption increases.Therefore existing heat-exchanger rig heat exchange efficiency and efficiency are lower.
The utility model content
The purpose of this utility model is, overcomes problems of the prior art, provides the flash distillation of a kind of inner drying steam two effect heat-exchanger rigs, can reduce the moisture content in the saturated vapor, takes full advantage of the latent heat of steam and the sensible heat of condensed water.
For solving above technical problem, a kind of inner drying steam of the present utility model flash distillation two effect heat-exchanger rigs, comprise water-bath type saturated steam generator and small pump, the cylindrical shell bottom of described water-bath type saturated steam generator is liquid Space, cylindrical shell top is vapor phase space, the roof of described vapor phase space is provided with exhaust steam valve, be provided with current divider in the described liquid Space, described moisturizing delivery side of pump links to each other with the bottom interface of described water-bath type saturated steam generator, the pressure-control valve that is controlled by the PLC controller is installed on the overheated steam pipe, be provided with the steam drying heat exchanger in the vapor phase space of described water-bath type saturated steam generator, the import of described steam drying heat exchanger is connected with the outlet of described pressure-control valve, the outlet of described steam drying heat exchanger is connected with described current divider, the outlet of the exhaust steam valve of described water-bath type saturated steam generator is connected with the steam inlet of main steam heat exchanger, the outlet that the condensation-water drain of main steam heat exchanger is provided with drain valve and drain valve is connected with the condensed water import of flash tank, the condensation-water drain of flash tank is connected with the import of water collect tank, and the outlet of water collect tank is connected with the entrance of described small pump; The outlet that the top of described flash tank is equipped with level pressure overflow valve and level pressure overflow valve is connected with the steam inlet of flash steam heat exchanger, and the outlet that the condensation-water drain of flash steam heat exchanger is connected with drain valve and drain valve is connected with the import of water collect tank; The material inlet pipe is connected with the material inlet of described flash steam heat exchanger, and the material outlet of flash steam heat exchanger is connected with the material inlet of described main steam heat exchanger, and the material outlet of main steam heat exchanger connects material outlet pipe; The first temperature sensor is installed on the described material outlet pipe, the outlet of described main steam heat exchanger drain valve is equipped with the second temperature sensor, the holding wire of described the first temperature sensor and the second temperature sensor accesses respectively the signal input part of described PLC controller, and the control signal wire of described PLC controller accesses described pressure-control valve.
With respect to prior art, the utility model has been obtained following beneficial effect: superheated steam enters the water-bath type saturated steam generator by pressure-control valve, enter again current divider through the steam drying heat exchanger first, becoming wet saturated steam from current divider steam out after lowering the temperature with the water heat exchange of liquid Space upwards overflows, this moment, the moisture content of saturated vapor was higher, superheated steam carries out indirect to saturated vapor when flowing through the steam drying heat exchanger, make the aqueous water in the wet saturated steam be evaporated to steam, become dry saturated steam.Dry saturated steam enters the main steam heat exchanger material is carried out the indirect second time, becomes high-temperature condensation water behind the release latent heat, is discharged by drain valve from the high-temperature condensation water that the main steam heat exchanger flows out.High-temperature condensation water sends into that the diffusion flash distillation is the lower flash-off steam of pressure in the flash tank, and the pressure of flash-off steam is set by the level pressure overflow valve of flash drum overhead; Flash-off steam enters and discharges latent heat in the flash steam heat exchanger and material is carried out the indirect first time, and the flash-off steam behind the release latent heat is condensed into cryogenic condensation water.The cryogenic condensation water of being discharged by cryogenic condensation water and the flash tank of the discharge of flash steam heat exchanger drain valve enters water collect tank, is pumped in the water-bath type saturated steam generator by small pump again.The first temperature sensor is surveyed the temperature of material in the material outlet pipe and is offered the PLC controller, and the PLC controller is according to the aperture of material outlet adjustment pressure-control valve, thus the pressure of steam supply of control water-bath type saturated steam generator.The second temperature sensor is by surveying the duty that the condensed water water temperature can perception main steam heat exchanger drain valve, the PLC controller compares the temperature of the second temperature sensor detection and maximum temperature and the minimum temperature of setting: if condensate temperature is between maximum temperature and minimum temperature that the PLC controller is set behind the drain valve, then drain valve is working properly; If condensate temperature is higher than the maximum temperature that the PLC controller is set behind the drain valve, then trap leaking is installed and is reported to the police, so that alert is in time safeguarded; If condensate temperature is lower than the minimum temperature that the PLC controller is set behind the drain valve, then drain valve stops up, and device is also reported to the police, so that alert is in time fixed a breakdown, avoids impact to produce.Material at first enters the flash steam heat exchanger and carries out the heat exchange first time, and this moment, the temperature of material was low, and temperature height and the latent heat of flash-off steam are very large, and Temperature Difference Ratio between the two is larger, has preferably heat transfer effect; Then material enters the main steam heat exchanger and carries out the heat exchange second time, this moment, material was heated, temperature raises, but heat exchange is that the higher dry saturated steam of temperature and heat transfer coefficient are larger with it, continue to have kept good heat transfer effect, the mode of this countercurrent flow has totally kept very high heat exchange efficiency, and has realized the cascade utilization of steam thermal energy, guarantee that heat energy eats dried bleeding, guaranteed the efficiency of heat-exchanger rig.
As preferred version of the present utility model, the top of described water-bath type saturated steam generator is equipped with automatic exhaust steam valve.Condensed water that small pump is mended upwards overflows with wet saturated steam after incoagulable gas is heated without deoxygenation; Because incoagulable gas is lighter than steam, so incoagulable gas is easy to gather at the equipment top.Because the temperature of incoagulable gas is lower than the temperature of steam, so when incoagulable gas gathered at the equipment top, the filling liquid in the automatic exhaust steam valve was shunk and made valve opening, incoagulable gas is effluxed; After the exhaust, be full of again steam in the automatic exhaust steam valve, temperature raises, and the filling liquid in the valve expands and makes valve closing; So automatic vent valve clearance automatic open close is discharged incoagulable gas.
As preferred version of the present utility model, the vapor phase space top of described main steam heat exchanger is equipped with vacuum breaker device and automatic exhaust steam valve.The vacuum breaker device can open and close automatically according to the pressure in the main steam heat exchanger, after device is stopped transport, along with the steam that remains in the device is condensed into condensed water gradually, the pressure of main steam heat exchanger vapor phase space reduces gradually, in case the pressure of main steam heat exchanger vapor phase space is lower than atmospheric pressure, the vacuum breaker device is opened automatically, air enters in the main steam heat exchanger, pressure with maintenance main steam heat exchanger vapor phase space is identical with atmospheric pressure, avoid vacuum to cause the equipment compression damage, prevent from simultaneously causing the condensed water suck-back, and avoid the equipment internal water accumulation that causes owing to the condensed water suck-back, metal erosion and heat-transfer surface fouling.
As preferred version of the present utility model, be provided with the U-shaped water seal between the flash tank condensed water import of the outlet of described main steam heat exchanger drain valve and described flash tank.Under the normal condition, be filled with condensed water in the U-shaped water seal, condensed water speed and impulsive force that main steam heat exchanger drain valve is discharged are very large, and when flowing through the U-shaped water seal, the resistance of U-shaped water seal will make the flow velocity of condensed water descend, and impulsive force reduces, and plays the effect of energy dissipating.
As preferred version of the present utility model, described the second temperature sensor is installed on the decline pipeline section of described U-shaped water seal.Temperature herein is more stable, and it is little to fluctuate, and is beneficial to measure accurately.
As preferred version of the present utility model, the front and back of described main steam heat exchanger drain valve and flash steam heat exchanger drain valve are in series with respectively front hydrophobic stop valve and rear hydrophobic stop valve, and the entrance of described front hydrophobic stop valve and the outlet of described rear hydrophobic stop valve are parallel with the bypass cutoff valve.Close front hydrophobic stop valve and rear hydrophobic stop valve, open the bypass cutoff valve, can safeguard or change drain valve, do not affect the operation of device.
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 structural representation of the utility model inner drying steam flash distillation two effect heat-exchanger rigs.
Among the figure: 1. superheated steam; 2. Pressure gauge; 3. front steam stop; 4. pressure-control valve; 5. rear steam stop; 6. water-bath type saturated steam generator; 6a. current divider; 6b. water-bath type saturated steam generator exhaust steam valve; 6c. overflow valve; 6d. blowoff valve; 6e. water-bath type saturated steam generator automatic exhaust steam valve; 7. water-level gauge; 8. small pump; 9. steam drying heat exchanger; 11. main steam heat exchanger; 11a. main steam heat exchanger material inlet; 11b. main steam heat exchanger material outlet; 11c. main steam heat exchanger steam inlet; 11d. main steam heat exchanger condensation-water drain; 11e. vacuum breaker device; 11f. main steam heat exchanger automatic exhaust steam valve; 11g. main steam heat exchanger drain valve; 11h.U shape water seal; 12. flash tank; 12a. flash tank condensed water import; 12b. flash tank condensation-water drain; 12c. flash tank level pressure overflow valve; 13. flash steam heat exchanger; 13a. flash steam heat exchanger material inlet; 13b. flash steam heat exchanger material outlet; 13c. flash steam heat exchanger steam inlet; 13d. flash steam heat exchanger condensation-water drain; 13e. flash steam heat exchanger drain valve; 15. water collect tank; 15a. water collect tank import; 15b. water collect tank outlet; 16a.PLC controller; 16b. the first temperature sensor; 16c. the second temperature sensor; 16d.DCS system; 16e. alarm.
The specific embodiment
As shown in Figure 1, inner drying steam of the present utility model flash distillation two effect heat-exchanger rigs comprise overheated steam pipe, water-bath type saturated steam generator 6, small pump 8, main steam heat exchanger 11, flash tank 12, flash steam heat exchanger 13, water collect tank 15 and PLC controller 16a.
The cylindrical shell bottom of water-bath type saturated steam generator 6 is liquid Space, and cylindrical shell top is vapor phase space, and the roof of vapor phase space is provided with water-bath type saturated steam generator exhaust steam valve 6b, is provided with current divider 6a in the liquid Space of water-bath type saturated steam generator 6.Be provided with steam drying heat exchanger 9 in the vapor phase space of water-bath type saturated steam generator 6.
The sidewall of water-bath type saturated steam generator 6 is equipped with water-level gauge 7 and overflow valve 6c, and overflow valve 6c can adopt Free Float Type Steam Trap.The outlet of small pump 8 links to each other with the bottom of water-bath type saturated steam generator 6 and replenishes an amount of condensed water according to the water level control signal of water-level gauge 7 in water-bath type saturated steam generator 6.The cylinder body bottom of water-bath type saturated steam generator 6 is equipped with blowoff valve 6d, and the outlet of blowoff valve 6d and overflow valve 6c all accesses delivery pipe.The top of water-bath type saturated steam generator 6 is equipped with water-bath type saturated steam generator automatic exhaust steam valve 6e with the discharging incoagulable gas.
The outlet of water-bath type saturated steam generator exhaust steam valve 6b is connected with the main steam heat exchanger steam inlet 11c of main steam heat exchanger 11, the main steam heat exchanger condensation-water drain 11d of main steam heat exchanger 11 is equipped with main steam heat exchanger drain valve 11g and U-shaped water seal 11h successively, the outlet of U-shaped water seal 11h is connected with the flash tank condensed water import 12a of flash tank 12, the flash tank condensation-water drain 12b of flash tank 12 is connected with the water collect tank import 15a of water collect tank 15, and the water collect tank outlet 15b of water collect tank 15 is connected with the entrance of small pump.
The top of flash tank 12 is equipped with flash tank level pressure overflow valve 12c, the outlet of flash tank level pressure overflow valve 12c is connected with the flash steam heat exchanger steam inlet 13c of flash steam heat exchanger 13, the flash steam heat exchanger condensation-water drain 13d of flash steam heat exchanger 13 is connected with flash steam heat exchanger drain valve 13e, and the outlet of flash steam heat exchanger drain valve 13e is connected with water collect tank import 15a.
The material inlet pipe is connected with the flash steam heat exchanger material inlet 13a of flash steam heat exchanger 13, the flash steam heat exchanger material outlet 13b of flash steam heat exchanger 13 is connected with the main steam heat exchanger material inlet 11a of main steam heat exchanger 11, and the main steam heat exchanger material outlet 11b of main steam heat exchanger 11 connects material outlet pipe.The vapor phase space top of main steam heat exchanger 11 is equipped with vacuum breaker device 11e and main steam heat exchanger automatic exhaust steam valve 11f.
The first temperature sensor 16b is installed on the material outlet pipe, the second temperature sensor 16c is installed on the decline pipeline section of U-shaped water seal 11h, the holding wire of the first temperature sensor 16b and the second temperature sensor 16c accesses respectively the signal input part of PLC controller 16a, the aperture of the temperature signal controlled pressure control valve 4 that the control signal wire cut-in pressure control valve of PLC controller 16a, PLC controller 16a record according to the first temperature sensor 16b.The corresponding signal end of PLC controller 16a also is connected with the 16d of DCS system and alarm 16e.
The front and back of main steam heat exchanger drain valve 11g and flash steam heat exchanger drain valve 13e are in series with respectively front hydrophobic stop valve and rear hydrophobic stop valve, and the entrance of front hydrophobic stop valve and the outlet of rear hydrophobic stop valve are parallel with the bypass cutoff valve.
In the work, superheated steam 1 successively through front steam stop 3, pressure-control valve 4 and after steam stop 5 enter the steam drying heat exchanger 9 that is built in the water-bath type saturated steam generator 6, enter current divider 6a from steam drying heat exchanger 9 again, lowered the temperature and overflowed from liquid Space from current divider 6a steam out, during through steam drying heat exchanger 9, superheated steam carries out indirect to saturated vapor makes it to become fully dry saturated steam.Dry saturated steam flows out the main steam heat exchanger steam inlet 11c that enters main steam heat exchanger 11 material is carried out indirectly for the second time heating from water-bath type saturated steam generator exhaust steam valve 6b, discharged by main steam heat exchanger drain valve 11g from the condensed water that main steam heat exchanger condensation-water drain 11d flows out, through entering the flash tank condensed water import 12a of flash tank 12 behind the U-shaped water seal 11h, a part of condensed water flash becomes flash-off steam enters flash steam heat exchanger 13 from flash tank level pressure overflow valve 12c discharge flash steam heat exchanger steam inlet 13c in flash tank 12, flash-off steam carries out the indirect first time to material in flash steam heat exchanger 13, again becoming condensed water behind the flash-off steam release latent heat flows out from flash steam heat exchanger condensation-water drain 13d, discharge through flash steam heat exchanger drain valve 13e, enter water collect tank 15 from water collect tank import 15a again, the condensed water that flows out from water collect tank outlet 15b is pumped into the water-bath type saturated steam generator 6 by small pump 8.
Material enters flash steam heat exchanger material inlet 13a from the material inlet pipe, flash-off steam carries out the indirect first time to material in flash steam heat exchanger 13, then material flows out from flash steam heat exchanger material outlet 13b, 11a enters main steam heat exchanger 11 from main steam heat exchanger material inlet, dry saturated steam carries out the heating second time to material in main steam heat exchanger 11, and last material flows out from main steam heat exchanger material outlet 11b and enters material outlet pipe.The first temperature sensor 16b surveys the temperature of material in the material outlet pipe and offers PLC controller 16a, and PLC controller 16a is according to the aperture of material outlet adjustment pressure-control valve 4, thus the pressure of steam supply of control water-bath type saturated steam generator.
The second temperature sensor 16c is by surveying the duty that the condensed water water temperature can perception main steam heat exchanger drain valve 11g, in case main steam heat exchanger drain valve 11g leaks, the temperature that the second temperature sensor 16c detects will be higher than the maximum temperature that PLC controller 16a sets, in case otherwise main steam heat exchanger drain valve 11g stop up, the temperature that the second temperature sensor 16c detects will be lower than the minimum temperature that PLC controller 16a sets.The temperature that the second temperature sensor 16c detects is not between maximum temperature that PLC controller 16a sets and minimum temperature the time, and PLC controller 16a drives alarm 16e and reports to the police, and to the 16d of DCS system transmitted signal.
Vacuum breaker device 11e can open and close automatically according to the pressure in the main steam heat exchanger 11, after device is stopped transport, along with the steam that remains in the device is condensed into condensed water gradually, the pressure of main steam heat exchanger 11 vapor phase spaces reduces gradually, in case the pressure of main steam heat exchanger 11 vapor phase spaces is lower than atmospheric pressure, vacuum breaker device 11e opens automatically, air enters in the main steam heat exchanger 11, pressure with maintenance main steam heat exchanger 11 vapor phase spaces is identical with atmospheric pressure, avoid vacuum to cause the equipment compression damage, prevent from simultaneously causing the condensed water suck-back, and avoid the equipment internal water accumulation that causes owing to the condensed water suck-back, metal erosion and heat-transfer surface fouling.When main steam heat exchanger 11 started, the vacuum breaker device was with autoshutdown.The vacuum breaker device preferably uses the strong T55 type of Taiwan Chinese vacuum breaker device, or the VB vacuum breaker device of Britain Si Paishake.
Because incoagulable gas is lighter than steam, gather so upwards be flowing in the top of equipment, because the temperature of incoagulable gas is lower than the temperature of steam, the filling liquid in the automatic exhaust steam valve is shunk and is made valve opening, incoagulable gas is effluxed; After the exhaust, be full of again steam in the automatic exhaust steam valve, temperature raises, and the filling liquid in the valve expands and makes valve closing; So automatic vent valve clearance automatic open close is discharged incoagulable gas.Automatic exhaust steam valve preferably adopts the strong S61 type of Taiwan Chinese automatic exhaust steam valve, or the product of the same type of Britain Si Paishake spirax, U.S. Armstrong armstrong.
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 (6)
1. heat-exchanger rigs are imitated in inner drying steam flash distillation two, comprise water-bath type saturated steam generator and small pump, the cylindrical shell bottom of described water-bath type saturated steam generator is liquid Space, cylindrical shell top is vapor phase space, the roof of described vapor phase space is provided with exhaust steam valve, be provided with current divider in the described liquid Space, described moisturizing delivery side of pump links to each other with the bottom interface of described water-bath type saturated steam generator, it is characterized in that: the pressure-control valve that is controlled by the PLC controller is installed on the overheated steam pipe, be provided with the steam drying heat exchanger in the vapor phase space of described water-bath type saturated steam generator, the import of described steam drying heat exchanger is connected with the outlet of described pressure-control valve, the outlet of described steam drying heat exchanger is connected with described current divider, the outlet of the exhaust steam valve of described water-bath type saturated steam generator is connected with the steam inlet of main steam heat exchanger, the outlet that the condensation-water drain of main steam heat exchanger is provided with drain valve and drain valve is connected with the condensed water import of flash tank, the condensation-water drain of flash tank is connected with the import of water collect tank, and the outlet of water collect tank is connected with the entrance of described small pump; The outlet that the top of described flash tank is equipped with level pressure overflow valve and level pressure overflow valve is connected with the steam inlet of flash steam heat exchanger, and the outlet that the condensation-water drain of flash steam heat exchanger is connected with drain valve and drain valve is connected with the import of water collect tank; The material inlet pipe is connected with the material inlet of described flash steam heat exchanger, and the material outlet of flash steam heat exchanger is connected with the material inlet of described main steam heat exchanger, and the material outlet of main steam heat exchanger connects material outlet pipe; The first temperature sensor is installed on the described material outlet pipe, the outlet of described main steam heat exchanger drain valve is equipped with the second temperature sensor, the holding wire of described the first temperature sensor and the second temperature sensor accesses respectively the signal input part of described PLC controller, and the control signal wire of described PLC controller accesses described pressure-control valve.
2. heat-exchanger rigs are imitated in inner drying steam according to claim 1 flash distillation two, and it is characterized in that: the top of described water-bath type saturated steam generator is equipped with automatic exhaust steam valve.
3. heat-exchanger rigs are imitated in inner drying steam according to claim 1 flash distillation two, and it is characterized in that: the vapor phase space top of described main steam heat exchanger is equipped with vacuum breaker device and automatic exhaust steam valve.
4. inner drying steam according to claim 1 flash distillation two effect heat-exchanger rigs is characterized in that: be provided with the U-shaped water seal between the outlet of described main steam heat exchanger drain valve and the condensed water import of described flash tank.
5. heat-exchanger rigs are imitated in inner drying steam according to claim 4 flash distillation two, and it is characterized in that: described the second temperature sensor is installed on the decline pipeline section of described U-shaped water seal.
6. each described inner drying steam flash distillation two effect heat-exchanger rigs in 5 according to claim 1, it is characterized in that: the front and back of described main steam heat exchanger drain valve and flash steam heat exchanger drain valve are in series with respectively front hydrophobic stop valve and rear hydrophobic stop valve, and the entrance of described front hydrophobic stop valve and the outlet of described rear hydrophobic stop valve are parallel with the bypass cutoff valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220530301 CN202884883U (en) | 2012-10-17 | 2012-10-17 | Inner drying steam flash steaming two-purpose heat exchange device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220530301 CN202884883U (en) | 2012-10-17 | 2012-10-17 | Inner drying steam flash steaming two-purpose heat exchange device |
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| Publication Number | Publication Date |
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| CN202884883U true CN202884883U (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220530301 Withdrawn - After Issue CN202884883U (en) | 2012-10-17 | 2012-10-17 | Inner drying steam flash steaming two-purpose heat exchange device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889579A (en) * | 2012-10-17 | 2013-01-23 | 亿恒节能科技江苏有限公司 | Inner drying steam flash evaporating double-effect heat exchanging system |
| CN103303947A (en) * | 2013-06-19 | 2013-09-18 | 大连海事大学 | Preparation method and device for efficiently preparing magnesium hydroxide |
-
2012
- 2012-10-17 CN CN 201220530301 patent/CN202884883U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889579A (en) * | 2012-10-17 | 2013-01-23 | 亿恒节能科技江苏有限公司 | Inner drying steam flash evaporating double-effect heat exchanging system |
| CN103303947A (en) * | 2013-06-19 | 2013-09-18 | 大连海事大学 | Preparation method and device for efficiently preparing magnesium hydroxide |
| CN103303947B (en) * | 2013-06-19 | 2014-09-03 | 大连海事大学 | Preparation method and device for efficiently preparing magnesium hydroxide |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130417 Effective date of abandoning: 20140423 |
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| RGAV | Abandon patent right to avoid regrant |