CN102607014B - Boiler water replenishing system capable of collecting waste heat and condensed water - Google Patents
Boiler water replenishing system capable of collecting waste heat and condensed water Download PDFInfo
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- CN102607014B CN102607014B CN2012100950823A CN201210095082A CN102607014B CN 102607014 B CN102607014 B CN 102607014B CN 2012100950823 A CN2012100950823 A CN 2012100950823A CN 201210095082 A CN201210095082 A CN 201210095082A CN 102607014 B CN102607014 B CN 102607014B
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Abstract
The invention discloses a boiler water replenishing system capable of collecting waste heat and condensed water. A boiler blowdown pipe of a boiler is connected with a blowdown expansion tank, a steam outlet of the blowdown expansion tank is connected into a hot water tank through a blowdown flash steam pipe, a blowdown water pipe of the blowdown expansion tank is connected into a continuous-discharge heat exchanger which is further connected with a softened water feeding pipe, the softened water feeding pipe is connected with a water softening station through a water supply pump, the softened water feeding pipe for the continuous-discharge heat exchanger is connected with a boiler secondary energy saver prior to being connected into the hot water tank, and the hot water tank is connected with a hot water outlet pipe which is sequentially connected with a circulating pump, a heat deaerator and a boiler water feeding pump prior to being connected into a boiler water inlet. The boiler water replenishing system has the advantages that centralized use of the waste heat and the condensed water is achieved, steam consumption of the deaerator is reduced, waste heat absorption effect is enhanced, connection of the deaerator is simplified, pollution of the heat and the condensed water to the environment is reduced, and water replenishing for the boiler is unaffected when heat exchange equipment fails.
Description
Technical field
The present invention relates to waste heat and the application of condensate water in boiler replenishing water in cigar mill, especially a kind of boiler replenishing water system of collecting waste heat and condensate water.
Background technology
Sewage, flue-gas temperature that multitubular boiler is discharged are higher, contain a large amount of heats.The fiber tow production equipment of tobacco enterprise, assembled air-conditioner, heat exchanger etc. produce a large amount of high temperature and purer condensate water, flash steam, and especially the condensing water temperature of throwing equipment generation is very high.These waste heats and condensate water are not recycled, and not only cause energy waste and contaminated environment.Although also there is other enterprise directly to be recovered in oxygen-eliminating device part of waste heat or condensate water, flash steam etc. or other local utilization, utilize point to disperse, not only assimilation effect is bad, and causes pipeline more and complicated, is not easy to control.
Summary of the invention
The purpose of this invention is to provide a kind of waste heat and condensate water focus utilization of making, not only reduce the pollution to environment of steam consumption quantity, enhancing exhaust-heat absorption effect, the tube connector of simplifying oxygen-eliminating device, minimizing heat and the condensate water of oxygen-eliminating device, and when the heat-exchange apparatus fault, do not affect again the boiler replenishing water system of boiler replenishing water.
For achieving the above object, the present invention adopts following technical scheme: a kind of boiler replenishing water system of collecting waste heat and condensate water, the boiler water blow-down pipe of boiler connects the blowdown expansion drum, the steam drain of blowdown expansion drum is by blowdown flash distillation steam pipe access one boiler, the sewage pipe access heat exchanger of blowdown expansion drum, the platoon heat exchanger also is connected with the demineralized water water inlet pipe, the demineralized water water inlet pipe connects the soft water station by supply-water pump, the demineralized water outlet pipe of platoon heat exchanger accesses described boiler after connecting boiler secondary energy-saving appliance again, boiler connects the hot water outlet pipe, the hot water outlet pipe connects circulating pump successively, access boiler feed water mouth after thermal deaerator and boiler feed pump.
Also comprise the cryogenic temperature condensation water pipe be connected with combined air conditioner and/or heating equipment and/or heat exchanger, the cryogenic temperature condensation water pipe connects the described boiler of access after the first condensate water recycling can and the first equipment for removing ferric ion successively.
Also comprise the flash tank be connected with worker-house condensed water in high temperature pipe, the steam drain of flash tank is by condensed water flashing steam pipe access boiler, the discharge outlet of flash tank connects the condensed water in high temperature pipe, and the condensed water in high temperature pipe accesses described boiler after connecting successively the second condensate water recycling can and the second equipment for removing ferric ion.
Described demineralized water water inlet pipe also connects boiler by the bypass pipe bypass after connecting supply-water pump, and bypass pipe is provided with magnetic valve.
Described boiler comprises casing, in casing between left and right every being oppositely arranged two vertical dividing plates: second partition and the first dividing plate, the top of second partition is fixedly connected with roof box, the two side ends of second partition is fixedly connected with two madial walls of casing, between the bottom of second partition and box bottom, gap is set, between the top of the first dividing plate and roof box, gap is set, the two side ends of the first dividing plate is fixedly connected with two madial walls of casing, the bottom of the first dividing plate is fixedly connected with box bottom, second, the first dividing plate will be separated into three branch mailbox from left to right in casing: the 3rd branch mailbox, the second branch mailbox and the first branch mailbox, on casing corresponding to the 3rd branch mailbox, be connected with described demineralized water outlet pipe and cryogenic temperature condensation water pipe, on casing corresponding to the second branch mailbox, connect described blowdown flash distillation steam pipe and condensed water flashing steam pipe, blowdown flash distillation steam pipe and condensed water flashing steam pipe all are connected on the top board of the casing that the second branch mailbox is corresponding, on casing corresponding to the first branch mailbox, connect described hot water outlet pipe and condensed water in high temperature pipe.
In casing corresponding to the first branch mailbox, be provided with liquid level sensor, liquid level sensor is connected with the supply-water pump signal at soft water station, on casing corresponding to the first branch mailbox, be connected be used to controlling the overflow pipe of the first branch mailbox water level, the top of the first dividing plate is the overfall on casing lower than overflow pipe, and the bottom of the second, first branch mailbox is connected with the blow-off pipe of belt switch valve.
Described boiler is the fire tube wet steamer, and the fire tube wet steamer carries boiler one-level energy-saving appliance, and the hot water outlet pipe enters the fire tube wet steamer from boiler one-level energy-saving appliance.
Described boiler one-level energy-saving appliance and boiler secondary energy-saving appliance are flue gas condenser, and heat exchanger is the platoon heat exchanger.
The top of second partition is provided be used to being communicated with the through hole of the 3rd branch mailbox and the second branch mailbox.
Described boiler is the stainless steel hot water tank of cuboid.
The boiler replenishing water system of collection waste heat of the present invention and condensate water, the demineralized water that multitubular boiler is used is confessed from soft water station feed pump, through the heat exchange of boiler platoon, flue gas condenser, with boiler blowdown water, the boiler exhaust gas of high temperature, carry out a heat exchange respectively, thermal softening water after preheating enters in the stainless steel hot water tank and absorbs blowdown flash steam and worker-house condensed water in high temperature flash steam (silencing means can be set) again, demineralized water after temperature further raises mixes with the worker-house condensed water in high temperature after hotter and deironing, is temporarily stored in the stainless steel hot water tank.Hot water (demineralized water and condensate water are mixed rear) hotter in the stainless steel hot water tank is given thermal deaerator by circulating pump, at thermal deaerator, further heats by steam after deoxygenation is heated again by boiler one-level energy-saving appliance (body energy-saving appliance) and enters boiler.Patent of the present invention is used condensate water and the flash steam of the waste heat of boiler blow-off, smoke evacuation and worker-house generation in boiler replenishing water, reach waste heat and condensate water focus utilization, not only reduce the steam consumption quantity of oxygen-eliminating device, can strengthen the exhaust-heat absorption effect, simplify the tube connector of oxygen-eliminating device, reduce the pollution to environment of heat and condensate water, and when the heat-exchange apparatus fault, do not affect again boiler replenishing water.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of boiler;
Fig. 3 is that A in Fig. 2 is to view.
The specific embodiment
By Fig. 1-a kind of boiler replenishing water system of collecting waste heat and condensate water shown in Figure 3, comprise fire tube wet steamer 1, fire tube wet steamer 1 carries boiler one-level energy-saving appliance 2, the boiler water blow-down pipe 17 of fire tube wet steamer 1 connects blowdown expansion drum 16, the steam drain of blowdown expansion drum 16 is by blowdown flash distillation steam pipe 18 access one boilers 35, the sewage pipe access platoon heat exchanger 15 of blowdown expansion drum 16, platoon heat exchanger 15 is water water heat exchanger, platoon heat exchanger 15 also is connected with demineralized water water inlet pipe 14, demineralized water water inlet pipe 14 connects the soft water station by supply-water pump 13, the sewer of boiler 1 is discharged after the demineralized water of platoon heat exchanger 15 heating low temperature, after connecting boiler secondary energy-saving appliance 20, the demineralized water outlet pipe 19 of platoon heat exchanger 15 accesses again described boiler 35, and demineralized water water inlet pipe 14 also connects boiler 35 by bypass pipe 12 bypass after connecting described supply-water pump 13, bypass pipe 12 is provided with magnetic valve 27, when preventing that platoon heat exchanger 15 or boiler secondary energy-saving appliance 20 from damaging, can not be the timely moisturizing of boiler 35.Boiler 35 connects hot water outlet pipe 3, hot water outlet pipe 3 connects rear access boiler 1 water inlet of circulating pump 22, thermal deaerator 4, boiler feed pump 5 and boiler one-level energy-saving appliance 2 successively, and hot water outlet pipe 3 finally enters fire tube wet steamer 1 from boiler one-level energy-saving appliance 2.Boiler one-level energy-saving appliance 2 and boiler secondary energy-saving appliance 20 are flue gas condenser.Thermal deaerator 4 and fire tube wet steamer 1 are prior art, therefore do not describe in detail.
The present invention also comprises the cryogenic temperature condensation water pipe 9 be connected with combined air conditioner, heating equipment and heat exchanger, and cryogenic temperature condensation water pipe 9 connects the first condensate water recycling can 10, the first equipment for removing ferric ion 11 and the described boiler 35 of the rear access of iron ion on-Line Monitor Device 36 more successively.Cryogenic temperature condensation water pipe 9 after the first condensate water recycling can 10 reclaims, then, through the first equipment for removing ferric ion 11 deironing, finally is delivered to the low-temperature condensate in combined air conditioner, heating equipment and heat exchanger boiler 35 and is heated together with demineralized water.
The present invention also comprises the flash tank 7 be connected with worker-house condensed water in high temperature pipe 6, the steam drain of flash tank 7 is by condensed water flashing steam pipe 21 access boilers 35, the discharge outlet of flash tank 7 connects condensed water in high temperature pipe 24, condensed water in high temperature pipe 24 connects the second condensate water recycling can 8 successively, the described boiler 35 of the second equipment for removing ferric ion 23 and the rear access of iron ion on-Line Monitor Device 36, like this, the worker-house condensed water in high temperature is separated into worker-house condensed water in high temperature flash steam and worker-house condensed water in high temperature after flash tank 7, flash steam is by condensed water flashing steam pipe 21 access boilers 35 and absorbed heating by low-temperature condensate and demineralized water, the worker-house condensed water in high temperature by condensed water in high temperature pipe 24 after the second condensate water recycling can 8 reclaims, after the second equipment for removing ferric ion 23 deironing, delivering to boiler 35 heats for low-temperature condensate and demineralized water and mixes use.
Described boiler 35 is the stainless steel hot water tank 35 of cuboid, boiler 35 comprises casing 34, in casing 34 between left and right every being oppositely arranged two vertical square spacer plate: second partition 32 and the first dividing plate 30, between the top of second partition 32 and casing 34 top boards, gap is set, the two side ends of second partition 32 is fixedly connected with two madial walls of casing 34 respectively, between the bottom of second partition 32 and casing 34 base plates, gap is set, between the top of the first dividing plate 30 and casing 34 top boards, gap is set, the two side ends of the first dividing plate 30 is fixedly connected with two madial walls of casing 34 respectively, the bottom of the first dividing plate 30 is fixedly connected with casing 34 base plates, second, the first dividing plate 32, 30 will be separated into three branch mailbox from left to right in casing 34: the 3rd branch mailbox 33, the second branch mailbox 31 and the first branch mailbox 29, on the casing 34 of the 3rd branch mailbox 33 correspondences, be connected with described demineralized water outlet pipe 19 and cryogenic temperature condensation water pipe 9, on the casing 34 of the second branch mailbox 31 correspondences, connect described blowdown flash distillation steam pipe 18 and condensed water flashing steam pipe 21, blowdown flash distillation steam pipe 18 and condensed water flashing steam pipe 21 all are connected on the top board of casing 34 of the second branch mailbox 31 correspondences, on the casing 34 of the first branch mailbox 29 correspondences, connect described hot water outlet pipe 3 and condensed water in high temperature pipe 24.In the casing 34 of the first branch mailbox 29 correspondences, be provided with liquid level sensor 26, liquid level sensor 26 is connected with supply-water pump 13 signals at soft water station.On the casing 34 of the first branch mailbox 29 correspondences, be connected with top be used to overflow pipe 25, the first dividing plates 30 of controlling the first branch mailbox 29 water levels lower than the overfall of overflow pipe 25 on casing 34.The second, the bottom of the first branch mailbox 31,29 is connected with the blow-off pipe 28 of belt switch valve.
In order to make the water in the 3rd branch mailbox 33 better absorb flash steam, and the air of boiler internal upper part can be communicated with, and the top of second partition 32 is provided be used to being communicated with the through hole 38 of the 3rd branch mailbox 33 and the second branch mailbox 31.The boiler top is connected with exhaust stack 37, even the logical atmosphere of the public exhaust stack 37 of the 3rd branch mailbox 33, the second branch mailbox 31 and the first branch mailbox 29, exhaust stack 37 can be connected to the 3rd branch mailbox 33 tops, can be connected to again the second branch mailbox 31 or the first branch mailbox 29 tops.
The course of work comprises following flow process:
1. technological process
The demineralized water of multitubular boiler 1 use is confessed from soft water station feed pump, a heat exchange is carried out in boiler 1 sewer, boiler 1 smoke evacuation through boiler 1 platoon heat exchange, flue gas condenser and high temperature, thermal softening water after preheating and the low-temperature condensate of combined air conditioner, heating equipment and heat exchanger enter the 3rd branch mailbox 33 in stainless steel hot water tank 35 together, demineralized water flows to the second branch mailbox 31 by second partition 32 bottoms, in the bottom of the second branch mailbox 31, absorbs the flash steam (silencing means is arranged) of condensed water in high temperature and boiler 1 sewer.After demineralized water absorbs blowdown flash steam and worker-house condensed water in high temperature flash steam, demineralized water after temperature further raises can rise to the top of the second branch mailbox 31, the demineralized water on the second branch mailbox 31 tops covers the first branch mailbox 29 that the first dividing plate 30 enters the dividing plate opposite side to be mixed with the condensed water in high temperature after hotter and deironing, is temporarily stored in the first branch mailbox 29.Hotter hot water in the first branch mailbox 29 (demineralized water and condensate water mix after) is given thermal deaerator 4 by circulating pump 22, at oxygen-eliminating device, further heats deoxygenation by steam and by boiler feed pump 5, delivers to boiler one-level energy-saving appliance 2(body energy-saving appliance) enter boiler 1 after again absorbing fume afterheat and use.
2. flash steam flow process
Boiler 1 continuous blowdown (surface blow-off) is arranged into blowdown expansion drum 16, and the flash steam of generation enters in the second branch mailbox 31 in stainless steel hot water tank 35 and is softened the water absorption, and remaining sewage enters platoon heat exchange and demineralized water heat-shift.
The worker-house condensed water in high temperature is first collected into flash tank 7, the second branch mailbox 31 that the flash steam produced enters in stainless steel hot water tank 35 is softened the water absorption, condensate water after flash distillation enters the condensate water recycling can, through the equipment for removing ferric ion deironing, enter the first branch mailbox 29 in stainless steel hot water tank 35 after online iron ion detection is qualified again.
3. prevent stainless steel hot water tank 35 lacks of water and overflow.
The first branch mailbox 29 in stainless steel hot water tank 35 is connected to (magnetic valve 27 is controlled) with the direct bypass of demineralized water water inlet pipe 14, when the first branch mailbox 29 water levels are low, magnetic valve 27 is opened, and demineralized water can directly enter the first branch mailbox 29 by this bypass pipe 12, prevents lack of water.When if cistern water level is higher, liquid level sensor 26 signal transmissions are out of service to the supply-water pump 13 at soft water station, prevent that the water of stainless steel hot water tank 35 from overflowing.
4. stainless steel hot water tank 35 basic structures.
Two dividing plates are set in stainless steel hot water tank 35: the first dividing plate 30 and second partition 32 are divided into three parts by boiler 35.The first dividing plate 30 is connected with boiler 35 bottoms, and should not be too high, and height should, lower than overfall, even the first branch mailbox 29, the second branch mailbox 31 and the 3rd branch mailbox 33 water levels maintain an equal level like this, can not affect the absorption of demineralized water to indirect steam yet.Second partition 32 is connected with casing 34 tops, unsuitable bigger than normal with bottom interval, can meet current and get final product, and can prevent that the direct overflow of water that does not absorb flash steam from advancing the first branch mailbox 29.Dividing plate separates demineralized water is relative with condensed water in high temperature, but demineralized water can overflow in condensed water in high temperature, and the demineralized water of low temperature and condensate water can only enter from the bottom of the first branch mailbox 29 the second branch mailbox 31, can absorb fully to greatest extent flash steam like this, flow out and use again after when overflowing across the first dividing plate 30, just entering the first branch mailbox 31 and condensed water in high temperature mixes.
Certainly, the present invention is not limited to above-mentioned form, boiler 1 use other kinds all can, and the cryogenic temperature condensation water pipe connect in combined air conditioner, heating equipment and heat exchanger wherein one or several also can.
Claims (7)
1. boiler replenishing water system of collecting waste heat and condensate water, it is characterized in that: the boiler water blow-down pipe of boiler connects the blowdown expansion drum, the steam drain of blowdown expansion drum is by blowdown flash distillation steam pipe access one boiler, the sewage pipe access platoon heat exchanger of blowdown expansion drum, the platoon heat exchanger also is connected with the demineralized water water inlet pipe, the demineralized water water inlet pipe connects the soft water station by supply-water pump, the demineralized water outlet pipe of platoon heat exchanger accesses described boiler after connecting boiler secondary energy-saving appliance again, boiler connects the hot water outlet pipe, the hot water outlet pipe connects circulating pump successively, access boiler feed water mouth after thermal deaerator and boiler feed pump, also comprise the cryogenic temperature condensation water pipe be connected with combined air conditioner and/or heating equipment, the cryogenic temperature condensation water pipe accesses described boiler after connecting successively the first condensate water recycling can and the first equipment for removing ferric ion, also comprise the flash tank be connected with worker-house condensed water in high temperature pipe, the steam drain of flash tank is by condensed water flashing steam pipe access boiler, the discharge outlet of flash tank connects the condensed water in high temperature pipe, and the condensed water in high temperature pipe accesses described boiler after connecting successively the second condensate water recycling can and the second equipment for removing ferric ion, described boiler comprises casing, in casing between left and right every being oppositely arranged two vertical dividing plates: second partition and the first dividing plate, the top of second partition is fixedly connected with roof box, the two side ends of second partition is fixedly connected with two madial walls of casing, between the bottom of second partition and box bottom, gap is set, between the top of the first dividing plate and roof box, gap is set, the two side ends of the first dividing plate is fixedly connected with two madial walls of casing, the bottom of the first dividing plate is fixedly connected with box bottom, second, the first dividing plate will be separated into three branch mailbox from left to right in casing: the 3rd branch mailbox, the second branch mailbox and the first branch mailbox, on casing corresponding to the 3rd branch mailbox, be connected with described demineralized water outlet pipe and cryogenic temperature condensation water pipe, on casing corresponding to the second branch mailbox, connect described blowdown flash distillation steam pipe and condensed water flashing steam pipe, blowdown flash distillation steam pipe and condensed water flashing steam pipe all are connected on the top board of the casing that the second branch mailbox is corresponding, on casing corresponding to the first branch mailbox, connect described hot water outlet pipe and condensed water in high temperature pipe.
2. the boiler replenishing water system of collection waste heat as claimed in claim 1 and condensate water is characterized in that: described demineralized water water inlet pipe also connects boiler by the bypass pipe bypass after connecting supply-water pump, and bypass pipe is provided with magnetic valve.
3. the boiler replenishing water system of collection waste heat as claimed in claim 2 and condensate water, it is characterized in that: be provided with liquid level sensor in casing corresponding to the first branch mailbox, liquid level sensor is connected with the supply-water pump signal at soft water station, on casing corresponding to the first branch mailbox, be connected be used to controlling the overflow pipe of the first branch mailbox water level, the top of the first dividing plate is the overfall on casing lower than overflow pipe, and the bottom of the second, first branch mailbox is connected with the blow-off pipe of belt switch valve.
4. the boiler replenishing water system of collection waste heat as claimed in claim 3 and condensate water, it is characterized in that: described boiler is the fire tube wet steamer, the fire tube wet steamer carries boiler one-level energy-saving appliance, and the hot water outlet pipe enters the fire tube wet steamer from boiler one-level energy-saving appliance.
5. the boiler replenishing water system of collection waste heat as claimed in claim 4 and condensate water, it is characterized in that: described boiler one-level energy-saving appliance and boiler secondary energy-saving appliance are flue gas condenser.
6. the boiler replenishing water system of collection waste heat as claimed in claim 5 and condensate water, it is characterized in that: the top of second partition is provided be used to being communicated with the through hole of the 3rd branch mailbox and the second branch mailbox.
7. the boiler replenishing water system of collection waste heat as claimed in claim 6 and condensate water, it is characterized in that: described boiler is the stainless steel hot water tank of cuboid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012100950823A CN102607014B (en) | 2012-03-31 | 2012-03-31 | Boiler water replenishing system capable of collecting waste heat and condensed water |
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| CN2012100950823A CN102607014B (en) | 2012-03-31 | 2012-03-31 | Boiler water replenishing system capable of collecting waste heat and condensed water |
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| CN102607014A CN102607014A (en) | 2012-07-25 |
| CN102607014B true CN102607014B (en) | 2013-11-27 |
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| CN115507357A (en) * | 2022-09-16 | 2022-12-23 | 华电电力科学研究院有限公司 | Water replenishing system of recoverer of boiler and water level control method and device thereof |
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