CN202647713U - System for utilizing draining energy of steam drum continuous blowdown flash tank - Google Patents
System for utilizing draining energy of steam drum continuous blowdown flash tank Download PDFInfo
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- CN202647713U CN202647713U CN2012202572410U CN201220257241U CN202647713U CN 202647713 U CN202647713 U CN 202647713U CN 2012202572410 U CN2012202572410 U CN 2012202572410U CN 201220257241 U CN201220257241 U CN 201220257241U CN 202647713 U CN202647713 U CN 202647713U
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Abstract
The utility model discloses a system for utilizing draining energy of a steam drum continuous blowdown flash tank. The system for utilizing the draining energy of the steam drum continuous blowdown flash tank comprises a continuous blowdown flash tank and a regular blowdown flash tank. The continuous blowdown flash tank is connected with the regular blowdown flash tank through a draining pipeline of the continuous blowdown flash tank. A system for utilizing draining energy is arranged in the draining pipeline of the continuous blowdown flash tank and is in a parallel connection with the regular blowdown flash tank. The system for utilizing draining energy comprises a vapor generator, a heater for a dust hopper of a dust-collecting fan, a liquid ammonia evaporator of a denitration system, a connection pipeline and a valve. The vapor generator is connected with the continuous blowdown flash tank. The vapor generator is in an upright type structure, wherein a steam outlet is arranged on the top of the vapor generator and is connected with a steam inlet placed on one side of the top of the heater for the dust hopper through a pipeline, a draining outlet is arranged on the bottom of the vapor generator, and the draining outlet is provided with a regulating valve. A draining outlet is arranged on one side face of the bottom of the heater for the dust hopper of the dust-collecting fan. The liquid ammonia evaporator of the denitration system is provided with a heating medium inlet, a heating medium outlet, a liquid ammonia pipeline inlet and a liquid ammonia pipeline outlet. The draining outlets of the vapor generator and the heater for the dust hopper are connected with the heating medium inlet of the liquid ammonia evaporator of the denitration system through a draining converging pipeline.
Description
Technical field
The utility model relates to drum continuous blowdown technical field, relates in particular to the hydrophobic energy utility system of a kind of drum continuous blowdown flash tank.
Background technology
The common drum continuous blowdown flash tank of prior art is hydrophobic is discharged by the flash vessel bottom, enter the regular unloading container volume-expanding pressure-reducing, a part enters atmosphere with the form of steam by gland steam exhauster, remaining is discharged by flash vessel bottom discharge mouth with hydrophobic form, and mix cold through cooling water and be cooled to below 70 ℃ and enter rhone, then enter water treatment system and process recycling.This flash vessel hydrophobic treatments mode can cause the waste of hydrophobic energy, and can form drop in summer by the steam that gland steam exhauster enters atmosphere and " rain " and form the exhaust outlet phenomenon of freezing winter, utilize simultaneously cooling water to mix the burden that cool cooling also can increase water treatment system; On the other hand, power station dust collector ash hopper heating and the required extracted steam from turbine consumption of denitrating system liquid ammonia evaporator are larger, have reduced unit efficiency, so prior art is from the energy utilization or the water-saving consumption-reduction aspect all is very disadvantageous.
Summary of the invention
The purpose of this utility model is exactly in order to solve the hydrophobic energy dissipation of the hydrophobic existence of prior art drum continuous blowdown flash tank, the steam that gland steam exhauster enters atmosphere can form drop in summer and " rain " and form the exhaust outlet phenomenon of freezing winter, utilize cooling water to mix cool cooling and increase the water treatment system burden, capacity usage ratio is poor, be unfavorable for water-saving consumption-reduction, and the power station dust collector ash hopper heats and the required extracted steam from turbine consumption of denitrating system liquid ammonia evaporator is larger, has reduced the problem of unit efficiency; Provide a kind of drum continuous blowdown flash tank hydrophobic energy utility system; System is simple, and heat can fully be recycled, improve generatine set heat efficiency, reduces gross coal consumption rate, be beneficial to water saving and energy-saving and cost-reducing.
To achieve these goals, the utility model adopts following technical scheme:
The hydrophobic energy utility system of a kind of drum continuous blowdown flash tank, comprise continuous blowdown water flash vessel, regular unloading container, continuous blowdown water flash vessel is connected with regular unloading container by continuous blowdown water flash vessel hydrophobic pipeline, be provided with the hydrophobic energy utilization device in parallel with regular unloading container at continuous blowdown water flash vessel hydrophobic pipeline, described hydrophobic energy utilization device comprises steam generator, the dust collector ash hopper heater, the denitrating system liquid ammonia evaporator, connecting pipe and valve; Steam generator is connected with continuous blowdown water flash vessel, and steam generator is vertical structure, and the top is steam (vapor) outlet, is connected with the top-side steam inlet of ash bucket heater through pipeline, and the bottom is hydrophobic outlet, and hydrophobic exit is provided with control valve; Dust collector ash hopper heater base side is hydrophobic outlet; The denitrating system liquid ammonia evaporator is provided with heat medium import, heat medium outlet and liquefied ammonia conduit entrance, gas ammonia pipe outlet; The hydrophobic outlet of steam generator and ash bucket heater is connected with the heat medium import of denitrating system liquid ammonia evaporator through the hydrophobic pipeline that converges.
Described control valve is connected with program-controlled equipment, program-controlled equipment comprises thermocouple, switch board, motor and executing agency, wherein thermoelectricity on a rare occasion hold with dust collector ash hopper be connected, the other end is connected with switch board, switch board is connected with motor, motor is connected with executing agency, and executing agency is connected with steam generator bottom control valve.
The described hydrophobic pipeline that converges adopts the Y shape threeway, above two be hydrophobic import, the bottom is a hydrophobic outlet, and is hydrophobic after the Y shape threeway is confluxed, and enters the liquid ammonia evaporator of denitrating system through the valve IV.
Described denitrating system liquid ammonia evaporator adopts the rotary water current mode of heating that tangentially enters, and the rotary fluid ammonia evaporator is cone-shaped cavity, and top-side is the heat medium import, and bottom sides is the heat medium outlet, and inside cavity is provided with the ammonia pipeline.
Described dust collector ash hopper heater comprises upper frame, lower section frame, heat transferring plate, and upper frame is connected with heat transferring plate with lower section frame and is connected, and forms a whole; Heat transferring plate is connected with grey headwall, heat transferring plate be shaped as trapezium structure, with dust collector ash hopper wall form fit, form the Heat preservation layer; Form heat exchanger channels between the adjacent heat transfer sheet, upper frame and lower section frame are respectively equipped with steam inlet and hydrophobic outlet, upper frame and lower section frame communicate by the heat exchanger channels of inner passage with the heat transferring plate group respectively, the jet chimney at steam generator top is connected with the upper frame steam inlet, and the hydrophobic outlet of lower section frame is connected with fluid level control valve with valve by pipeline.
Described ash bucket heater base pipeline is established valve III and fluid level control valve.
The utility model operation principle: the utility model is provided with the hydrophobic energy utilization device in parallel with regular unloading container at continuous blowdown water flash vessel hydrophobic pipeline, described hydrophobic energy utilization device comprises steam generator, control valve, program-controlled equipment, dust collector ash hopper heater, fluid level control valve, Y shape threeway, denitrating system liquid ammonia evaporator.Steam generator is vertical design, and the top is steam (vapor) outlet, and the bottom is hydrophobic outlet, and is provided with control valve; The dust collector ash hopper heater adopts board-like, and top-side is steam inlet, and bottom sides is hydrophobic outlet; The hydrophobic pipeline that converges adopts the Y shape threeway, above two be hydrophobic import, the bottom is a hydrophobic outlet; The denitrating system liquid ammonia evaporator adopts the rotary water current mode of heating, and top-side is the medium import, and bottom sides is media outlet.The platoon flash vessel is hydrophobic enter steam generator after, through volume-expanding pressure-reducing, the steam of generation enters the dust collector ash hopper heater by the top pipeline and carries out ash bucket heating.For preventing that the ash content dewfall from forming acid corrosion, need the degree of superheat that keeps certain between ash content temperature and the flue gas dew point temperature.When flue gas dew point temperature or ambient temperature variation, the degree of superheat in the ash bucket between the temperature of ash content and the flue gas dew point temperature can change, the degree of superheat comparative result that this degree of superheat and need keep is as feedback signal, send control instruction by program-controlled equipment, by actuator generator bottom control valve opening is regulated, adjust the height of hydrophobic liquid level in the generator, thereby change the volume of steam generator, and then change the quantity of steam enter the dust collector ash hopper heater, making needs the degree of superheat that keeps constant between ash content temperature and the flue gas dew point temperature.After steam entered the dust collector ash hopper heater, releases heat became water by steam, flowed in board-like ash bucket heater, and the ash bucket outer wall namely forms the heating moisture film.Ash bucket heater base pipeline is provided with fluid level control valve, regulates by liquid-level pressure, keeps the area of heating moisture film in the board-like ash bucket heater, to guarantee good heating effect.For guaranteeing that steam generator is hydrophobic and the ash bucket heater condensate is unimpeded, at the hydrophobic pipeline that converges the Y shape threeway is set, both are after the Y shape threeway is confluxed, enter again the liquid ammonia evaporator of denitrating system, mode with tangential swirl forms the rotary water current zone of heating, liquefied ammonia heated make it form the gaseous state ammonia, be used for flue gas denitrification system as catalyst.Hydrophobic energy carries out being discharged by liquid ammonia evaporator behind the deep exploitation, flows into rhone.
The beneficial effects of the utility model:
1) the utility model adopts said system, and integral arrangement is succinct, and material usage is less, is conducive to the utilization of the hydrophobic energy of continuous blowdown flash tank, reaches the purpose of heat recovery and water-saving consumption-reduction.
2) adopt the hydrophobic energy utility system of continuous blowdown flash tank, reduce hydrophobic thermal loss and hydrophobic consumption of cooling-water, avoid deciding that row's steam drain " rains " and the phenomenon of freezing, reach the purpose of recovery heat, water-saving consumption-reduction, protection of the environment.
3) adopt the hydrophobic energy utility system of continuous blowdown flash tank, can reduce the extracted steam from turbine consumption of ash bucket heating and liquid ammonia evaporator, improve generatine set heat efficiency, reduce gross coal consumption rate, thereby reach energy conservation and consumption reduction effects.
4) heating of the ash bucket of cold district electric power station system in winter and the consumption of liquid ammonia evaporator energy are larger, and the heat recovery of hydrophobic energy utility system and water-saving consumption-reduction effect are more obvious, and saving energy and reduce the cost for the cold district electric power station system has special meaning.
Description of drawings
Fig. 1 is the utility model system syndeton schematic diagram;
Fig. 2 is the utility model dust collector ash hopper heater structure schematic diagram;
Fig. 3 is the utility model dust collector ash hopper heater cross-sectional view
Among the figure, 1. valve I, 2. steam generator, 3. control valve, 4. program-controlled equipment 5. valve II, 6. dust collector ash hopper heater, 7. valve III, 8. fluid level control valve, the threeway of 9.Y shape, 10. valve IV, 11. liquid ammonia evaporator, 12. continuous blowdown flash tanks, 13. continuous blowdown water flash vessel hydrophobic pipelines, 14. regular unloading container, 15. the liquefied ammonia conduit entrance, 16. gas ammonia pipe outlets, 17. upper frames, 18. lower section frame, 19. heat transferring plate, 20. steam inlets, 21. hydrophobic outlets, 22. heat exchanger channels, 23. rhones.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
The hydrophobic energy utility system of a kind of drum continuous blowdown flash tank, as shown in Figure 1 to Figure 3, comprise continuous blowdown water flash vessel 12, regular unloading container 14, continuous blowdown water flash vessel 12 is connected with regular unloading container 14 by continuous blowdown water flash vessel hydrophobic pipeline 13, be provided with the hydrophobic energy utilization device in parallel with regular unloading container 14 at continuous blowdown water flash vessel hydrophobic pipeline 13, described hydrophobic energy utilization device comprises steam generator 2, dust collector ash hopper heater 6, denitrating system liquid ammonia evaporator 11, connecting pipe and valve; Steam generator 2 is connected with continuous blowdown water flash vessel 12, steam generator 2 is vertical structure, the top is steam (vapor) outlet, is connected with the top-side steam inlet of dust collector ash hopper heater 6 through pipeline, and the bottom is hydrophobic outlet, and hydrophobic exit is provided with control valve 3; Dust collector ash hopper heater 6 bottom sides are hydrophobic outlet, are connected with the valve III through pipeline to be connected with Liquid level adjusting valve 8; Denitrating system liquid ammonia evaporator 11 is provided with heat medium import, heat medium outlet and liquefied ammonia conduit entrance 15, gas ammonia pipe outlet 16; The hydrophobic outlet of steam generator 2 and ash bucket heater 6 is connected with the heat medium import of denitrating system liquid ammonia evaporator 11 through the hydrophobic pipeline that converges.
Described control valve 3 is connected with program-controlled equipment 4, program-controlled equipment 4 comprises thermocouple, switch board, motor and executing agency, wherein thermoelectricity on a rare occasion hold with dust collector ash hopper be connected, the other end is connected with switch board, switch board is connected with motor, motor is connected with executing agency, and executing agency is connected with generator bottom control valve 3.Thermocouple is connected with dust collector ash hopper, measures the temperature of ash content, and temperature signal passes to switch board.The flue gas dew point temperature becomes to grade relevant with coal-fired, and these data are pre-stored in the correlation module of switch board, and the degree of superheat numerical value that needs between ash content temperature and the flue gas dew point temperature to keep also presets, and stores in the correlation module of switch board.Switch board compares the temperature difference between ash content temperature and the flue gas dew point temperature and predefined degree of superheat numerical value, send the motor action instruction according to both results after relatively, driven by motor executing agency and then control and regulation valve opening, namely big or small by the aperture of program-controlled equipment 4 control and regulation valves 3.Hydrophobic (1.0～1.2MPa that continuous blowdown water flash vessel 12 is discharged by continuous blowdown water flash vessel hydrophobic pipeline 13,180～190 ℃) after valve I 1 enters steam generator 2, through volume-expanding pressure-reducing (0.2～0.5MPa, 120～150 ℃), the steam of generation enters dust collector ash hopper heater 6 by the top pipeline through valve II 5 and carries out the ash bucket heating.For preventing that the ash content dewfall forms acid corrosion in the dust collector ash hopper, the temperature of ash content will be higher than the flue gas dew point temperature, namely need keep certain Guo Re Du ⊿ T.When the flue gas dew point temperature raises or the environment temperature reduction, this moment ash content temperature and flue gas dew point temperature Wen Cha ⊿ t Xiao Yu ⊿ T, both results relatively are as feedback signal, send control instruction by program-controlled equipment 4, open large generator bottom control valve 3 apertures by actuator, generator 2 interior liquid levels reduce, and it is large that volume becomes, generator 2 overhead vapor flows increase, and then the ash content temperature kept Re Du ⊿ T constant in the raising ash bucket.When the flue gas dew point temperature reduces or the environment temperature rising, control then to be reversed.
The described hydrophobic pipeline that converges adopts Y shape threeway 9, above two be hydrophobic import, the bottom is a hydrophobic outlet.Hydrophobic after the Y shape threeway is confluxed, enter the liquid ammonia evaporator 11 of denitrating system through valve IV 10.
Described denitrating system liquid ammonia evaporator 11 adopts the rotary water current mode of heating that tangentially enters, and the rotary fluid ammonia evaporator is cone-shaped cavity, and top-side is the heat medium import, and bottom sides is the heat medium outlet, and inside cavity is provided with the ammonia pipeline.Ammonia and not blending of heat medium in the pipeline, the evaporimeter heat medium is to enter cone-shaped cavity perpendicular to the conically shaped axis direction, approach axis and wall are tangent, under the differential pressure action of entrance and outlet, begun to form the rotary water current zone of heating in the conically shaped inside cavity by import, rotary water current can be strengthened the heat transfer effect of heat medium in liquid ammonia evaporator 11, liquefied ammonia is heated make it form the gaseous state ammonia, is used for flue gas denitrification system as catalyst.Heat medium is cooled to 50～60 ℃, and then hydrophobic energy is discharged by liquid ammonia evaporator 11 by deep exploitation, flows into rhone 23.
Described dust collector ash hopper heater 6 comprises upper frame 17, lower section frame 18, heat transferring plate 19, and upper frame 17 is connected with lower section frame and is connected, forms a whole with heat transferring plate 19 respectively; Heat transferring plate 19 is connected with grey headwall, heat transferring plate 19 be shaped as trapezium structure, with dust collector ash hopper wall form fit, form the Heat preservation layer; Form heat exchanger channels 22 between the adjacent heat transfer sheet 19, upper frame 17 and lower section frame 18 are respectively equipped with steam inlet 20 and hydrophobic outlet 21, upper frame 17 and lower section frame 18 communicate with the heat exchanger channels 22 of heat transferring plate group by the inner passage respectively, the jet chimney at steam generator 2 tops is connected with upper frame steam inlet 20, and the hydrophobic outlet 21 of lower section frame is connected with the valve III by pipeline and is connected with fluid level control valve 8.Steam enters the heat exchanger channels 22 of heat transferring plate group by pipeline through upper frame steam inlet 20, carry out hydrophobicly after the heat exchange being flowed out by the lower section frame hydrophobic channel again.The dust collector ash hopper heater adopts the ladder-shaped plate type structure, can increase the heat exchange contact area, makes heat medium fully mobile in the passage between plate, and then forms the heating moisture film, obtains good heating effect.
Described dust collector ash hopper heater 6 bottom pipe are established valve III 7 and fluid level control valve 8.Regulate by liquid-level pressure, keep board-like ash bucket heater 6 interior liquid levels, thereby guarantee the area of heating moisture film, to guarantee good heating effect.
Although above-mentionedly by reference to the accompanying drawings the specific embodiment of utility model is described; but be not the restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection domain of the present utility model.
Claims (6)
1. hydrophobic energy utility system of drum continuous blowdown flash tank, comprise continuous blowdown water flash vessel, regular unloading container, continuous blowdown water flash vessel is connected with regular unloading container by continuous blowdown water flash vessel hydrophobic pipeline, it is characterized in that, be provided with the hydrophobic energy utilization device in parallel with regular unloading container at continuous blowdown water flash vessel hydrophobic pipeline, described hydrophobic energy utilization device comprises steam generator, the dust collector ash hopper heater, the denitrating system liquid ammonia evaporator, connecting pipe and valve; Steam generator is connected with continuous blowdown water flash vessel, and steam generator is vertical structure, and the top is steam (vapor) outlet, is connected with the top-side steam inlet of ash bucket heater through pipeline, and the bottom is hydrophobic outlet, and hydrophobic exit is provided with control valve; Dust collector ash hopper heater base side is hydrophobic outlet; The denitrating system liquid ammonia evaporator is provided with heat medium import, heat medium outlet and liquefied ammonia conduit entrance, gas ammonia pipe outlet; The hydrophobic outlet of steam generator and dust collector ash hopper heater is connected with the heat medium import of denitrating system liquid ammonia evaporator through the hydrophobic pipeline that converges.
2. the hydrophobic energy utility system of drum continuous blowdown flash tank as claimed in claim 1, it is characterized in that, described control valve is connected with program-controlled equipment, program-controlled equipment comprises thermocouple, switch board, motor and executing agency, wherein thermoelectricity on a rare occasion hold with dust collector ash hopper be connected, the other end is connected with switch board, switch board is connected with motor, and motor is connected with executing agency, and executing agency is connected with generator bottom control valve.
3. the hydrophobic energy utility system of drum continuous blowdown flash tank as claimed in claim 1, it is characterized in that, the described hydrophobic pipeline that converges adopts the Y shape threeway, above two be hydrophobic import, the bottom is a hydrophobic outlet, hydrophobic after the Y shape threeway is confluxed, enter the liquid ammonia evaporator of denitrating system through the valve IV.
4. the hydrophobic energy utility system of drum continuous blowdown flash tank as claimed in claim 1, it is characterized in that, described denitrating system liquid ammonia evaporator adopts the rotary water current mode of heating that tangentially enters, the rotary fluid ammonia evaporator is cone-shaped cavity, top-side is the heat medium import, bottom sides is the heat medium outlet, and inside cavity is provided with the ammonia pipeline.
5. the hydrophobic energy utility system of drum continuous blowdown flash tank as claimed in claim 1 is characterized in that, described dust collector ash hopper heater comprises upper frame, lower section frame, heat transferring plate, and upper frame is connected with heat transferring plate with lower section frame and is connected; Heat transferring plate is connected with grey headwall, heat transferring plate be shaped as trapezium structure, with dust collector ash hopper wall form fit, form the Heat preservation layer; Form heat exchanger channels between the adjacent heat transfer sheet, upper frame and lower section frame are respectively equipped with steam inlet and hydrophobic outlet, upper frame and lower section frame communicate by the heat exchanger channels of inner passage with the heat transferring plate group respectively, the jet chimney at steam generator top is connected with the upper frame steam inlet, and the hydrophobic outlet of lower section frame is connected with fluid level control valve with valve by pipeline.
6. the hydrophobic energy utility system of drum continuous blowdown flash tank as claimed in claim 1 is characterized in that, described ash bucket heater base pipeline is established valve III and fluid level control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202572410U CN202647713U (en) | 2012-06-04 | 2012-06-04 | System for utilizing draining energy of steam drum continuous blowdown flash tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202572410U CN202647713U (en) | 2012-06-04 | 2012-06-04 | System for utilizing draining energy of steam drum continuous blowdown flash tank |
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| Publication Number | Publication Date |
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| CN202647713U true CN202647713U (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202572410U Expired - Fee Related CN202647713U (en) | 2012-06-04 | 2012-06-04 | System for utilizing draining energy of steam drum continuous blowdown flash tank |
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| CN (1) | CN202647713U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705808A (en) * | 2012-06-04 | 2012-10-03 | 山东电力工程咨询院有限公司 | Drain energy utilization system of steam header continuous blowdown flash tank |
-
2012
- 2012-06-04 CN CN2012202572410U patent/CN202647713U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705808A (en) * | 2012-06-04 | 2012-10-03 | 山东电力工程咨询院有限公司 | Drain energy utilization system of steam header continuous blowdown flash tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20150604 |
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| EXPY | Termination of patent right or utility model |