CN104033880B - Boiler blowdown water heat energy utilization system - Google Patents

Boiler blowdown water heat energy utilization system Download PDF

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Publication number
CN104033880B
CN104033880B CN201410304093.7A CN201410304093A CN104033880B CN 104033880 B CN104033880 B CN 104033880B CN 201410304093 A CN201410304093 A CN 201410304093A CN 104033880 B CN104033880 B CN 104033880B
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water
pipe
tank
boiler
cooling tank
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CN104033880A (en
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王正伟
胡俊华
何保兵
石峰
郭利民
许世勇
马楠
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China Tobacco Henan Industrial Co Ltd
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China Tobacco Henan Industrial Co Ltd
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Abstract

The invention discloses a kind of boiler blowdown water heat energy utilization system, comprise softening water station, boiler, flash tank, heat exchanger and cooling tank; Softening water station comprises water softener and water tank, and water softener connects water tank by soft water outlet pipe, and water softener is connected with backwash outlet pipe; Heat exchanger is connected with boiler heating pipe, cooling tank water inlet pipe, flash tank tube connector and radiator drain; Boiler connects boiler heating pipe and boiler water blow-down pipe; Flash drum overhead connects water tank by water tank connecting pipe, and the bottom of flash tank connects heat exchanger by flash tank tube connector; Cooling tank connects heat exchanger by cooling tank water inlet pipe, and be connected with cooling tank blow-off pipe bottom cooling tank, cooling tank sidewall is connected with overflow pipe, and overflow pipe connects cesspool.The present invention makes boiler emission sewage heating boiler intake; Use the water in flash steam heating water tank, thus both reduced the temperature of boiler emission sewage, again the dual-heated temperature of boiler feed water, saved the heat energy that boiler needs.

Description

Boiler blowdown water heat energy utilization system
Technical field
This inventionrelate to boiler technology field, particularly relate to boiler blow-off water reuse.
Background technology
In boiler running process, fall along with surface moisture evaporation becomes steam Transportation, boiler water salt surfactant concentration increases, pot water conductivity raises, be unfavorable for safe operation of the boiler, just by the water of part boiler surfaces of draining, must reduce or keep boiler water salt concentration, making water quality meet boiler operatiopn needs.
Boiler surfaces blowdown carries out automatic sewage drainage according to the size of boiler water electrical conductivity, boiler longtime running or water quality poor, electrical conductivity reaches set point, and blowdown motor-driven valve is opened, and boiler starts blowdown.The sewage pressure of steam boiler is comparatively large, and temperature is very high, at least more than 100 DEG C, effluent from boiler directly discharges, and not only wastes energy, and causes emission point environment temperature high, periphery produces a large amount of white water smoke, if directly great lot of water resources can be caused again to waste with running water cooling.
Summary of the invention
This inventionobject be to provide one can reduce boiler blow-off coolant-temperature gage, the simultaneously boiler blowdown water heat energy utilization system of at utmost economize energy and cost.
For achieving the above object, boiler blowdown water heat energy utilization system of the present invention, is characterized in that: comprise softening water station, boiler, flash tank, heat exchanger and cooling tank; With the flow direction of fluid for forward direction;
Described softening water station comprises water softener and water tank, and water softener connects water tank by soft water outlet pipe, and water tank is connected with radiator drain and water tank connecting pipe; Water softener is connected with backwash outlet pipe;
Described heat exchanger is connected with boiler heating pipe, cooling tank water inlet pipe, flash tank tube connector and described radiator drain;
Boiler heating pipe described in described boiler connects, boiler connects described flash tank by boiler water blow-down pipe;
Described flash drum overhead connects described water tank by described water tank connecting pipe, and the bottom of flash tank connects heat exchanger by described flash tank tube connector;
Described cooling tank connects described heat exchanger by described cooling tank water inlet pipe, is connected with cooling tank blow-off pipe bottom cooling tank, and cooling tank blow-off pipe is provided with cooling tank blowoff valve, and cooling tank blow-off pipe connects described cesspool, and cesspool is connected with bilge discharge pipe; Described cooling tank sidewall is connected with overflow pipe, and overflow pipe connects described cesspool;
The end that described boiler heating pipe closes on boiler is provided with boiler replenishing water valve, and the end that boiler heating pipe closes on heat exchanger is provided with hot soft water outlet valve; Described boiler water blow-down pipe is provided with boiler blow down valve;
The end that described water tank connecting pipe closes on water tank is provided with check-valves, and the end that described water tank connecting pipe closes on flash tank is provided with flash distillation steam valve;
Described flash tank tube connector is provided with drain valve successively along the flow direction of liquid and heat enters sewage valve;
Described cooling tank water inlet pipe be provided with cold go out sewage valve, described backwash outlet pipe is provided with soft sewage valve; Described radiator drain is provided with cold soft water water intaking valve.
Cooling tank sidepiece above described overflow pipe is connected with running water water inlet pipe, and running water water inlet pipe is provided with running water temperature-sensing valve, is provided with temperature sensor in the cooling tank of overflow pipe junction, and temperature sensor connects running water temperature-sensing valve.
Described cooling tank top is connected with exhaust stack, and exhaust stack is provided with diffusion valve;
The side, top of described flash tank is provided with safety valve, and safety valve is connected with described exhaust stack by diffusing tube connector.
Described backwash outlet pipe connects the middle and upper part of described cooling tank.
Be connected with the first bypass pipe between described radiator drain and boiler heating pipe, the first bypass pipe is provided with the first by-passing valve.
The flash tank tube connector that described drain valve and heat are entered between sewage valve is connected with the second bypass pipe, and the second bypass pipe connects described cooling tank water inlet pipe, and the second bypass pipe is provided with the second by-passing valve;
Described cooling tank internal side wall is connected with dividing plate, and dividing plate bottom and cooling tank diapire are provided with gap, and dividing plate top is higher than described cooling tank water inlet pipe and the connecting portion of cooling tank and the connecting portion of backwash outlet pipe and cooling tank; The connecting portion of overflow pipe and cooling tank is positioned at dividing plate side, and the connecting portion of cooling tank water inlet pipe and cooling tank and the connecting portion of backwash outlet pipe and cooling tank are positioned at dividing plate opposite side.
The connecting portion place of described water tank connecting pipe and water tank is provided with silencing means.
Described boiler heating pipe is connected in series with oxygen-eliminating device.
During use, when boiler 18 water conductivity exceedes setting value, boiler blow down valve 1(is artificial or controlled automatically by electric control gear) open, the sewage of boiler 18 continuous blowdown enters flash tank 19 through boiler blow down valve 1, HTHP sewage flashes off flash steam in flash tank 19, flash steam is used for thermoplastic water along 23 li, the water tank (flash steam enters water tank 23 place and preferably adds silencing means) that water tank connecting pipe 26 is transported to softening water station by flash distillation steam valve 16 and check-valves 11 successively, give the moisturizing of boiler 18 again, or by heat exchanger 20, cold water heating is used for having a bath, wash one's hands.
Still have quite high temperature after sewage flash distillation in flash tank 19, the second by-passing valve 5 enters sewage valve 4 by drain valve 3 and heat and enters heat exchanger 20 along flash tank tube connector 30 after cutting out bottom flash tank 19.The moisturizing of boiler 18 is flowed out from the water tank 23 of softening water station, and the first by-passing valve 13 enters heat exchanger 20 along radiator drain 25 through cold soft water water intaking valve 2 after cutting out.The moisturizing of boiler 18 absorbs after sewerage heat energy successively by hot soft water outlet valve 15 and boiler replenishing water valve 14 in heat exchanger 20, flow to boiler 18(demineralized water through boiler heating pipe 28 to enter and can be introduced into oxygen-eliminating device 42 deoxygenation before boiler 18 and enter boiler 18 again, that is, a preferably series connection oxygen-eliminating device 42 on boiler heating pipe 28), thus promote the inflow temperature of boiler 18, the energy resource consumption of reduction boiler 18.
After the moisturizing of hot sewage preboiler 18 in heat exchanger 20, its temperature is reduced and becomes low-temperature sewage; Low-temperature sewage flows out from heat exchanger 20, along cooling tank water inlet pipe 29 through cold go out sewage valve 12 enter cooling tank 21.When the water level in cooling tank 21 reaches overflow pipe 7 connecting portion (overfall), the water in cooling tank 21 will enter outdoor sewage pond 34 by overflow pipe 7, and is lowered the temperature further in cesspool 34.
If heat exchanger 20 blocks or heat exchanger 20 needs repairing, then respectively cold soft water water intaking valve 2 and hot soft water outlet valve 15 are closed, first by-passing valve 13 is opened, thus demineralized water just without heat exchanger 20, but directly can enter boiler heating pipe 28 afterwards to boiler 18 moisturizing by radiator drain 25.In this case, again heat is entered respectively sewage valve 4 and cold go out sewage valve 12 close, opened by second by-passing valve 5, the sewage of such flash tank 19 without heat exchanger 20, but can be arranged into cooling tank 21 after directly entering cooling tank water inlet pipe 29 by the second bypass pipe 40.
Semicircular described dividing plate 41 is vertically installed additional between the inherent water inlet of cooling tank 21 and overfall, dividing plate 41 height is higher than the connecting portion of cooling tank water inlet pipe 29 with cooling tank 21 and the connecting portion (i.e. this two places water inlet) of backwash outlet pipe 27 and cooling tank 21, cooling tank 21 lower middle portion is divided into two parts by dividing plate 41, be not connected with tank body bottom dividing plate 41, the water of dividing plate 41 both sides is communicated with bottom dividing plate 41.
Sewage accumulates in bottom cooling tank 21 after entering cooling tank 21.If the moisturizing that boiler 18 needs is less or sewage instantaneous displacement is larger, in heat exchanger 20, sewerage heat energy can not (more) be absorbed by the moisturizing of boiler 18 very well, sewage temperature may be also very high, in this case just naturally can cool in cooling tank 21, and enter cesspool 34 through overflow pipe 7 after mixing with the water at low temperature of accumulating bottom it in cooling tank 21.
When sewage quantity is less, when not being continuous blow-down, the dividing plate 41 of cooling tank 21 act as: the low-temperature sewage of opposite side (overflow side) can be extruded by overfall by the intake high temperature sewage of side of dividing plate 41, high temperature sewage is temporarily stored in cooling tank 21, Temperature fall at relatively low ambient temperatures, just again can be discharged by overflow pipe 7 when there being new effluent stream to come, making the sewage discharged by overflow pipe 7 have lower temperature.
It is impure that heat exchanger 20 is used for the demineralized water of backwashing equipment, and salt concentration is high, and temperature is normal temperature, generally directly enters trench, thus wastes the lower temperature of backwashing water.
In technical scheme of the present invention, the sewage after softening water station backwash is entered cooling tank 21 through backwash outlet pipe 27 and soft sewage valve 10, the sewage of discharging with boiler 18 mixes, thus plays the effect of the temperature again reducing boiler 18 effluent sewerage.
Adopt technical scheme of the present invention, by heat exchanger, boiler emission sewage heating boiler is intake; By water in the flash steam heating water tank of flash tank (namely preparing the water entering boiler), thus both reduced the temperature of boiler emission sewage, again the dual-heated temperature of boiler feed water, saved the heat energy that boiler needs, kill two birds with one stone.
The pipeline of exhaust stack is often longer, and safety valve is connected with described exhaust stack by diffusing tube connector, and flash tank and cooling tank two equipment can be made to share a set of exhaust stack, saves equipment investment, simplifies pipe laying, meets emissions requirements.
The dependency structures such as cooling tank internal partition, can make to enter the sewage that in cooling tank, temperature is relatively high can not overflow at once go out, but first by overflow side house a period of time and the lower sewage of temperature after Temperature fall is extruded, thus reduce further the temperature of cooling tank institute effluent sewerage.The setting of running water water inlet pipe, running water temperature-sensing valve etc., can comparatively large or boiler needs in boiler blow-off amount moisturizing less time, force by introducing running water to reduce sewage temperature, thus absolutely avoid the situation that the sewage temperature of discharge is higher, avoid the situation causing emission point environment temperature high.The setting of first, second bypass pipe, is convenient to maintenance or dredging heat exchanger.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of cooling tank;
Fig. 3 is the schematic top plan view removing Fig. 2 after connecting line;
Fig. 4 is that after removing connecting line, schematic diagram is looked on a left side of Fig. 2.
Detailed description of the invention
In Fig. 1, direction shown in arrow is the flow direction of fluid (water or steam).
As shown in Figures 1 to 4, boiler blowdown water heat energy utilization system of the present invention comprises softening water station, boiler 18, flash tank 19, heat exchanger 20 and cooling tank 21; With the flow direction of fluid (water or steam) for forward direction.
Described softening water station comprises water softener 22 and water tank 23, and water softener 22 connects water tank 23 by soft water outlet pipe 24, and water tank 23 is connected with radiator drain 25 and water tank connecting pipe 26; Water softener 22 is connected with backwash outlet pipe 27.
Described heat exchanger 20 is connected with boiler heating pipe 28, cooling tank water inlet pipe 29, flash tank tube connector 30 and described radiator drain 25.
The boiler heating pipe 28 described in water inlet connection of described boiler 18, boiler 18 connects described flash tank 19 by boiler water blow-down pipe 31.
Described flash tank 19 top connects described water tank 23 by described water tank connecting pipe 26, and the bottom of flash tank 19 connects heat exchanger 20 by described flash tank tube connector 30.
Described cooling tank 21 connects described heat exchanger 20 by described cooling tank water inlet pipe 29, cooling tank blow-off pipe 32 is connected with bottom cooling tank 21, cooling tank blow-off pipe 32 is provided with cooling tank blowoff valve 6, cooling tank blow-off pipe 32 connects described cesspool 34, cesspool 34 is connected with bilge discharge pipe 33, and bilge discharge pipe 33 can connect external sewage plant.Described cooling tank 21 sidewall is connected with overflow pipe 7, and overflow pipe 7 connects described cesspool 34.
The end that described boiler heating pipe 28 closes on boiler 18 is provided with boiler replenishing water valve 14, and the end that boiler heating pipe 28 closes on heat exchanger 20 is provided with hot soft water outlet valve 15; Described boiler water blow-down pipe 31 is provided with boiler blow down valve 1.
The end that described water tank connecting pipe 26 closes on water tank 23 is provided with check-valves 11, and the end that described water tank connecting pipe 26 closes on flash tank 19 is provided with flash distillation steam valve 16.
Described flash tank tube connector 30 is provided with drain valve 3 successively along the flow direction of liquid and heat enters sewage valve 4.
Described cooling tank water inlet pipe 29 be provided with cold go out sewage valve 12, described backwash outlet pipe 27 is provided with soft sewage valve 10.Described radiator drain 25 is provided with cold soft water water intaking valve 2.
Cooling tank 21 sidepiece above described overflow pipe 7 is connected with running water water inlet pipe 35, and running water water inlet pipe 35 is provided with running water temperature-sensing valve 8, and be provided with temperature sensor 36 in the cooling tank 21 of overflow pipe 7 junction, temperature sensor 36 connects running water temperature-sensing valve 8.Also temperature sensor 36 can be made first to connect an electric control gear, as PLC, single-chip microcomputer, integrated circuit etc., then make electric control gear connect running water temperature-sensing valve 8.Electric control gear is existing routine techniques, and figure does not show.
Described cooling tank 21 top is connected with exhaust stack 37, and exhaust stack 37 is provided with diffusion valve 9; The side, top of described flash tank 19 is provided with safety valve 17, and safety valve 17 is connected with described exhaust stack 37 by diffusing tube connector 38.The pipeline of exhaust stack 37 is often longer, and safety valve 17 is connected with described exhaust stack 37 by diffusing tube connector 38, flash tank 19 and cooling tank 21 two equipment can be made to share a set of exhaust stack 37, save equipment investment, simplify pipe laying, meet emissions requirements.
Described backwash outlet pipe 27 connects the middle and upper part of described cooling tank 21.Be connected with the first bypass pipe 39, first bypass pipe 39 between described radiator drain 25 and boiler heating pipe 28 and be provided with the first by-passing valve 13.
Described drain valve 3 and the heat flash tank tube connector 30 entered between sewage valve 4 is connected with the second bypass pipe 40, second bypass pipe 40 and connects described cooling tank water inlet pipe 29, second bypass pipe 40 and be provided with the second by-passing valve 5.
Described cooling tank 21 internal side wall is connected with dividing plate 41, and dividing plate 41 bottom and cooling tank 21 diapire are provided with gap, and dividing plate 41 top is higher than the connecting portion of described cooling tank water inlet pipe 29 with cooling tank 21 and the connecting portion of backwash outlet pipe 27 and cooling tank 21; Overflow pipe 7 is positioned at dividing plate 41 side with the connecting portion of cooling tank 21, and cooling tank water inlet pipe 29 is positioned at dividing plate 41 opposite side with the connecting portion of cooling tank 21 and the connecting portion of backwash outlet pipe 27 and cooling tank 21.
Described water tank connecting pipe 26 is provided with silencing means with the connecting portion place of water tank 23.Silencing means is existing routine techniques, and figure does not show.Described boiler heating pipe 28 is connected in series with oxygen-eliminating device 42.
Wherein, described water softener 22, water tank 23, flash tank 19, oxygen-eliminating device, silencing means and heat exchanger 20 etc. are existing routine techniques, and its concrete structure no longer describes in detail.Described boiler blow down valve 1 preferably adopts boiler 18 automatic pollution discharge magnetic valve (can adopt various existing magnetic valve), in boiler 18, arranging a pot water conductivity checkout gear, (this checkout gear is prior art, figure does not show), this checkout gear connects described electric control gear, electric control gear control connection boiler 18 automatic pollution discharge magnetic valve.Certainly, boiler blow down valve 1 also can adopt manual blowdown valve, and by manual operation.
Described flash tank 19 and cooling tank 21 are all provided with Pressure gauge, thermometer, liquid level gauge, described cooling tank 21 is provided with safety valve.Above-mentioned parts are this area conventional components, and figure does not show.
During use, when boiler 18 water conductivity exceedes setting value, boiler blow down valve 1(is artificial or controlled automatically by electric control gear) open, the sewage of boiler 18 continuous blowdown enters flash tank 19 through boiler blow down valve 1, HTHP sewage flashes off flash steam in flash tank 19, flash steam is used for thermoplastic water along 23 li, the water tank (flash steam enters water tank 23 place and preferably adds silencing means) that water tank connecting pipe 26 is transported to softening water station by flash distillation steam valve 16 and check-valves 11 successively, give the moisturizing of boiler 18 again, or by heat exchanger 20, cold water heating is used for having a bath, wash one's hands.
Still have quite high temperature after sewage flash distillation in flash tank 19, the second by-passing valve 5 enters sewage valve 4 by drain valve 3 and heat and enters heat exchanger 20 along flash tank tube connector 30 after cutting out bottom flash tank 19.The moisturizing of boiler 18 is flowed out from the water tank 23 of softening water station, and the first by-passing valve 13 enters heat exchanger 20 along radiator drain 25 through cold soft water water intaking valve 2 after cutting out.The moisturizing of boiler 18 absorbs after sewerage heat energy successively by hot soft water outlet valve 15 and boiler replenishing water valve 14 in heat exchanger 20, flow to boiler 18(demineralized water through boiler heating pipe 28 to enter and can be introduced into oxygen-eliminating device 42 deoxygenation before boiler 18 and enter boiler 18 again, that is, a preferably series connection oxygen-eliminating device 42 on boiler heating pipe 28), thus promote the inflow temperature of boiler 18, the energy resource consumption of reduction boiler 18.
After the moisturizing of hot sewage preboiler 18 in heat exchanger 20, its temperature is reduced and becomes low-temperature sewage; Low-temperature sewage flows out from heat exchanger 20, along cooling tank water inlet pipe 29 through cold go out sewage valve 12 enter cooling tank 21.When the water level in cooling tank 21 reaches overflow pipe 7 connecting portion (overfall), the water in cooling tank 21 will enter outdoor sewage pond 34 by overflow pipe 7, and is lowered the temperature further in cesspool 34.
If heat exchanger 20 blocks or heat exchanger 20 needs repairing, then respectively cold soft water water intaking valve 2 and hot soft water outlet valve 15 are closed, first by-passing valve 13 is opened, thus demineralized water just without heat exchanger 20, but directly can enter boiler heating pipe 28 afterwards to boiler 18 moisturizing by radiator drain 25.In this case, again heat is entered respectively sewage valve 4 and cold go out sewage valve 12 close, opened by second by-passing valve 5, the sewage of such flash tank 19 without heat exchanger 20, but can be arranged into cooling tank 21 after directly entering cooling tank water inlet pipe 29 by the second bypass pipe 40.
Semicircular described dividing plate 41 is vertically installed additional between the inherent water inlet of cooling tank 21 and overfall, dividing plate 41 height is higher than the connecting portion of cooling tank water inlet pipe 29 with cooling tank 21 and the connecting portion (i.e. this two places water inlet) of backwash outlet pipe 27 and cooling tank 21, cooling tank 21 lower middle portion is divided into two parts by dividing plate 41, be not connected with tank body bottom dividing plate 41, the water of dividing plate 41 both sides is communicated with bottom dividing plate 41.
Sewage accumulates in bottom cooling tank 21 after entering cooling tank 21.If the moisturizing that boiler 18 needs is less or sewage instantaneous displacement is larger, in heat exchanger 20, sewerage heat energy can not (more) be absorbed by the moisturizing of boiler 18 very well, sewage temperature may be also very high, in this case just naturally can cool in cooling tank 21, and enter cesspool 34 through overflow pipe 7 after mixing with the water at low temperature of accumulating bottom it in cooling tank 21.
When sewage quantity is less, when not being continuous blow-down, the dividing plate 41 of cooling tank 21 act as: the low-temperature sewage of opposite side (overflow side) can be extruded by overfall by the intake high temperature sewage of side of dividing plate 41, high temperature sewage is temporarily stored in cooling tank 21, Temperature fall at relatively low ambient temperatures, just again can be discharged by overflow pipe 7 when there being new effluent stream to come, making the sewage discharged by overflow pipe 7 have lower temperature.
It is impure that heat exchanger 20 is used for the demineralized water of backwashing equipment, and salt concentration is high, and temperature is normal temperature, generally directly enters trench, thus wastes the lower temperature of backwashing water.
In technical scheme of the present invention, the sewage after softening water station backwash is entered cooling tank 21 through backwash outlet pipe 27 and soft sewage valve 10, the sewage of discharging with boiler 18 mixes, thus plays the effect of the temperature again reducing boiler 18 effluent sewerage.
Even if still higher through the sewage temperature of heat exchanger 20, the cool sewage of backwash that softening water station is discharged is also less, is provided with a running water temperature-sensing valve 8, tank body is provided with a temperature sensor 36 in cooling tank 21 overflow side.During use, running water water inlet pipe 35 is connected with external water source from the beginning (as running water tap).When overflow pipe 7 import department temperature is still higher (this trigger temperatures can be set by running water temperature-sensing valve 8 or connected electric control gear), running water temperature-sensing valve 8 is opened automatically, passes into running water thus reach the object reducing sewage temperature at cooling tank 21 overfall place; Cesspool 34 is entered after sewage after cooling.Cesspool 34 can again by naturally cool or with the mode of other outdoor sewage combination cooling, that is fallen by boiler 18 sewage temperature is lower, then sewage can be sent to sewage plant process.
Blow-off pipe bottom cooling tank 21 is provided with a cooling tank blowoff valve 6, the cooling tank blowoff valve 6 of cooling tank 21 tank base cuts out at ordinary times, after a period of time, can open bottom cooling tank blowoff valve 6 and directly be drained by the dirt precipitated in tank body.Cooling tank 21 top is provided with a diffusion valve 9, and the exhaust stack 37 be connected with diffusion valve 9 leads to outdoor, can balance the pressure in cooling tank tank body and atmospheric pressure, be conducive to draining, and can play cooling effect.
Flash tank 19, cooling tank 21 all can also the annexes such as mounting safety valve, Pressure gauge, thermometer, liquid level gauge.And the exhaust stack of flash tank 19 is preferably as diffusing exhaust stack 37 UNICOM of tube connector 38 with cooling tank 21, exhaust stack 37 diameter is enough large, diffuses demand, just can share exhaust stack 37 steam discharge as long as meet, and saves equipment investment, simplified apparatus installation process.
Above embodiment is the unrestricted technical scheme of the present invention in order to explanation only, although with reference to above-described embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: still can modify to the present invention or equivalent replacement, and not departing from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of right of the present invention.

Claims (3)

1. boiler blowdown water heat energy utilization system, is characterized in that: comprise softening water station, boiler, flash tank, heat exchanger and cooling tank; With the flow direction of fluid for forward direction;
Described softening water station comprises water softener and water tank, and water softener connects water tank by soft water outlet pipe, and water tank is connected with radiator drain and water tank connecting pipe; Water softener is connected with backwash outlet pipe;
Described heat exchanger is connected with boiler heating pipe, cooling tank water inlet pipe, flash tank tube connector and described radiator drain;
Boiler heating pipe described in described boiler connects, boiler connects described flash tank by boiler water blow-down pipe;
Described flash drum overhead connects described water tank by described water tank connecting pipe, and the bottom of flash tank connects heat exchanger by described flash tank tube connector;
Described cooling tank connects described heat exchanger by described cooling tank water inlet pipe, is connected with cooling tank blow-off pipe bottom cooling tank, and cooling tank blow-off pipe is provided with cooling tank blowoff valve, and cooling tank blow-off pipe connects described cesspool, and cesspool is connected with bilge discharge pipe; Described cooling tank sidewall is connected with overflow pipe, and overflow pipe connects described cesspool;
The end that described boiler heating pipe closes on boiler is provided with boiler replenishing water valve, and the end that boiler heating pipe closes on heat exchanger is provided with hot soft water outlet valve; Described boiler water blow-down pipe is provided with boiler blow down valve;
The end that described water tank connecting pipe closes on water tank is provided with check-valves, and the end that described water tank connecting pipe closes on flash tank is provided with flash distillation steam valve;
Described flash tank tube connector is provided with drain valve successively along the flow direction of liquid and heat enters sewage valve;
Described cooling tank water inlet pipe be provided with cold go out sewage valve, described backwash outlet pipe is provided with soft sewage valve; Described radiator drain is provided with cold soft water water intaking valve;
Cooling tank sidepiece above described overflow pipe is connected with running water water inlet pipe, and running water water inlet pipe is provided with running water temperature-sensing valve, is provided with temperature sensor in the cooling tank of overflow pipe junction, and temperature sensor connects running water temperature-sensing valve;
Described cooling tank top is connected with exhaust stack, and exhaust stack is provided with diffusion valve;
The side, top of described flash tank is provided with safety valve, and safety valve is connected with described exhaust stack by diffusing tube connector;
Described backwash outlet pipe connects the middle and upper part of described cooling tank;
Be connected with the first bypass pipe between described radiator drain and boiler heating pipe, the first bypass pipe is provided with the first by-passing valve;
The flash tank tube connector that described drain valve and heat are entered between sewage valve is connected with the second bypass pipe, and the second bypass pipe connects described cooling tank water inlet pipe, and the second bypass pipe is provided with the second by-passing valve;
Described cooling tank internal side wall is connected with dividing plate, and dividing plate bottom and cooling tank diapire are provided with gap, and dividing plate top is higher than described cooling tank water inlet pipe and the connecting portion of cooling tank and the connecting portion of backwash outlet pipe and cooling tank; The connecting portion of overflow pipe and cooling tank is positioned at dividing plate side, and the connecting portion of cooling tank water inlet pipe and cooling tank and the connecting portion of backwash outlet pipe and cooling tank are positioned at dividing plate opposite side.
2. boiler blowdown water heat energy utilization system according to claim 1, is characterized in that: the connecting portion place of described water tank connecting pipe and water tank is provided with silencing means.
3. boiler blowdown water heat energy utilization system according to claim 1, is characterized in that: described boiler heating pipe is connected in series with oxygen-eliminating device.
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CN104266170A (en) * 2014-10-11 2015-01-07 中国轻工业长沙工程有限公司 Comprehensive utilization method of thermal power plant boiler wastewater
CN105466274B (en) * 2015-12-28 2017-09-19 申若飞 Pollution high-temperature-hot-water and steam are converted into the device of clean water and steam
CN107973356B (en) * 2017-10-23 2021-04-20 河南中烟工业有限责任公司 Boiler blowdown heat energy cyclic utilization system

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