CN109186300A - A kind of afterheat utilizing system - Google Patents
A kind of afterheat utilizing system Download PDFInfo
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- CN109186300A CN109186300A CN201810940928.6A CN201810940928A CN109186300A CN 109186300 A CN109186300 A CN 109186300A CN 201810940928 A CN201810940928 A CN 201810940928A CN 109186300 A CN109186300 A CN 109186300A
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- water
- heat exchanger
- heat
- heat exchange
- temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0012—Recuperative heat exchangers the heat being recuperated from waste water or from condensates
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention provides a kind of afterheat utilizing systems, comprising: residual heat collection system, the first waste heat exchange system, the second waste heat exchange system and Decay heat removal system；The residual heat collection system is capable of the waste heat of collection system generation, and after waste heat exchange system, then transfers heat to Decay heat removal system, can be good at the heat generated using system.This system also can be reduced original system generation environment Peculiar Smell simultaneously, can also improve atmospheric environment while using waste heat.
Description
Technical field
The present invention relates to Heat Treatment technical field, in particular to a kind of afterheat utilizing system.
Background technique
Currently, the conventional method mainly used for the processing of steam in production process is, it is using condenser that cold water is straight
It connects to contact with steam and carries out heat exchange, cooling water is then transported to cooling tower and is cooled down.
Above-mentioned process will cause a large amount of energy waste, simultaneously because carrying a certain amount of impurity thing inside steam
Material, after the raising of cooling water circulating ratio, cooling water impurity material concentration will be increased, and will be generated sternly by cooling tower cooler
The smell of weight, influences environmental quality.
To sum up, have the following problems in existing production process: the condensed cooling water of condenser is directly discharged into cooling
Tower cooler causes the residual heat resources of system to waste, and causes certain environmental pollution.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of afterheat utilizing system.
A kind of afterheat utilizing system, including residual heat collection system, the more than first heat exchange series are provided in the embodiment of the present invention
System, the second waste heat exchange system and Decay heat removal system, in which:
The residual heat collection system, comprising: condenser, the air intake of the condenser and external steam generating device
Venthole connection；
The first waste heat exchange system, comprising: First Heat Exchanger, the hot water inlet of the First Heat Exchanger with it is described cold
The water outlet of condenser is connected to；
Affiliated second waste heat exchange system, comprising: the second heat exchanger, the hot water inlet of second heat exchanger are changed with first
The hot water outlet of hot device is connected to；
The Decay heat removal system, comprising: cooling tower, the water inlet of the cooling tower and the heat of second heat exchanger go out
Mouth of a river connection；
The First Heat Exchanger squeezes into the recycling of the first cold water after heat exchange processing, by the water of heat exchange treated the first temperature
The water of heat exchange treated second temperature is squeezed into the second heat exchanger by device, and the first temperature is lower than preset temperature, and second temperature is high
In preset temperature；
Second heat exchanger carries out heat exchange processing after receiving the water that First Heat Exchanger is squeezed into, and handles in heat exchange
Afterwards, the water of heat exchange treated third temperature is squeezed into the second cold water recyclable device, by the water of heat exchange treated the 4th temperature
Squeeze into cooling tower；Third temperature is lower than the preset temperature, and the 4th temperature is higher than the preset temperature.
In one embodiment, the First Heat Exchanger includes extraction plate heat exchanger, and second heat exchanger includes dry
Dry plate heat exchanger；Or the First Heat Exchanger includes dry plate heat exchanger, second heat exchanger includes that extraction is board-like
Heat exchanger.
In one embodiment, the first cold water recyclable device and/or the second cold water recyclable device include condenser；Or
Person's the second cold water recyclable device includes third heat exchanger, and treated that water squeezes into third cold water recycling dress for the heat exchange of third heat exchanger
It sets.
In one embodiment, the third cold water recyclable device includes temporary storage tank, the water outlet of the temporary storage tank and institute
State the cold water inlet connection of the second heat exchanger；Or the third cold water recyclable device includes the condenser.
In one embodiment, the Decay heat removal system includes water tank, the water inlet of the water tank with it is described
The water outlet of cooling tower is connected to.
In one embodiment, the residual heat collection system includes self priming pump, and the self priming pump is for first heat exchange
The hot water inlet of device is connected to the water outlet of the cold water recyclable device；The Decay heat removal system includes self priming pump, it is described from
Sucking pump is used for the connection of the water tank water outlet and the cold water recyclable device water inlet.
In one embodiment, the residual heat collection system includes flash tank, the venthole of the flash tank with it is described cold
The air intake of condenser is connected to.
In one embodiment, the second waste heat exchange system includes water supply pump, and the water supply pump is for described temporary
The water outlet of tank is connected to the hot water inlet of second heat exchanger.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by written explanation
Specifically noted structure is achieved and obtained in book, claims and attached drawing.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of afterheat utilizing system provided by the present invention.
Fig. 2 is the structural schematic diagram of afterheat utilizing system provided by the present invention in a particular embodiment.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
The embodiment of the invention provides a kind of sewage disposal systems, as shown in Figure 1, including residual heat collection system 11, first
Waste heat exchange system 12, the second waste heat exchange system 13 and Decay heat removal system 14, in which:
Residual heat collection system includes 11: condenser 111, and the air intake of the condenser 111 is set with external steam generation
Standby venthole connection；External steam generating device can be flash tank；
First waste heat exchange system include 12: First Heat Exchanger 12, the hot water inlet of the First Heat Exchanger 12 with it is described
The water outlet of condenser 111 is connected to；
Second waste heat exchange system includes 13: the second heat exchangers 131, the hot water inlet of second heat exchanger 131 and the
The hot water outlet of one heat exchanger 12 is connected to；
Decay heat removal system includes 14: cooling tower 141, the water inlet of the cooling tower 141 and second heat exchanger 131
Hot water outlet connection；
The First Heat Exchanger squeezes into the recycling of the first cold water after heat exchange processing, by the water of heat exchange treated the first temperature
The water of heat exchange treated second temperature is squeezed into the second heat exchanger by device (such as aforementioned condenser 111), and the first temperature is lower than
Preset temperature, second temperature are higher than preset temperature；
Second heat exchanger carries out heat exchange processing after receiving the water that First Heat Exchanger is squeezed into, and handles in heat exchange
Afterwards, the water of heat exchange treated third temperature is squeezed into the second cold water recyclable device (such as aforementioned condenser 111), at heat exchange
The water of the 4th temperature after reason squeezes into cooling tower；Third temperature is lower than the preset temperature, and the 4th temperature is higher than described pre-
If temperature.
The working principle of above-mentioned afterheat utilizing system is as follows:
Firstly, the steam of discharge is sent into condenser by pipeline by external steam generating device.Condenser to convey into
Come steam condensed, steam heats the cooling water in condenser, heat from steam-transfer to cooling water inside.
The cooling water of heat is discharged into the first waste heat exchange system and carries out first time heat exchange by condenser.First waste heat exchange system
After heat exchange processing, when the temperature of the water after heat exchange reaches preset temperature or less, which is squeezed into the first cold water recyclable device
Such as condenser 111, the water of the cooling can be recycled, without additionally giving condenser arrangement cold water；And when heat exchange
When the temperature of water afterwards is not up to preset temperature or less, which is squeezed into the second heat exchanger.First waste heat exchange system can be
The heat exchangers such as extraction water plate heat exchanger, dry plate heat exchanger.
First waste heat exchange system not up to will be discharged into the second waste heat exchange system progress second by preset temperature water below
Secondary heat exchange.Second waste heat exchange system is after heat exchange processing, when the temperature of the water after heat exchange reaches preset temperature or less, by this
Water squeezes into the second cold water recyclable device such as condenser 111, can recycle the water of the cooling, without additionally to cold
Condenser configures cold water；And when the temperature of the water after heat exchange is not up to preset temperature or less, which is squeezed into cooling tower, is carried out cold
But.Second waste heat exchange system can be the heat exchangers such as extraction water plate heat exchanger, dry plate heat exchanger.
Not up to preset temperature water below is squeezed into cooling tower and cooled down by the second waste heat exchange system, and cooling tower will be cold
But the cooling water after stores for future use.In this way, afterheat utilizing system is just exchanged by waste heat twice, the waste heat of cooling water is realized
It utilizes, improves utilization rate of waste heat.
The beneficial effect of above-mentioned afterheat utilizing system is: in above-mentioned afterheat utilizing system, carrying out condensing it from condenser
The cooling water of heat afterwards first has to exchange heat by two groups of waste heat exchange systems, and some residual heat resources are utilized, and existing
Cooling water in condenser is directly discharged into cooling tower and compared by technology, and waste heat is not only effectively utilized in above-mentioned afterheat utilizing system
Resource, and can solve material deposition problems, so that passing through the row for reducing pernicious gas when cooling tower cooler
It puts, improves environmental quality.Since system that employs twice waste heats to exchange process, so the effect of UTILIZATION OF VESIDUAL HEAT IN can also be enhanced.
In one embodiment, the first, second waste heat exchange system is exchanged heat using plate heat exchanger, so both
It can guarantee heat exchange efficiency, also can solve material deposition problems, the first, second waste heat exchange system can be according to interior
Portion's dirt accumulates situation, periodically cleaned 30 minutes using 2% thermokalite water of concentration or more, guarantee waste heat exchange system efficiency.
In one embodiment, the First Heat Exchanger includes extraction plate heat exchanger, and second heat exchanger includes dry
Dry plate heat exchanger；Or the First Heat Exchanger includes dry plate heat exchanger, second heat exchanger includes that extraction is board-like
Heat exchanger.
In one embodiment, the first, second waste heat exchange system is run simultaneously using series connection and parallel connection, when first
When the temperature of water can be reduced to preset temperature or less by waste heat exchange system, the second waste heat exchange system can not have to come into operation,
When the temperature of water cannot be reduced to preset temperature or less by the first waste heat exchange system, the second waste heat exchange system of investment continues
Heat exchange continues to water entering cooling when the second waste heat exchange system cannot still reduce the temperature of water to a certain extent
Tower sufficiently can arbitrarily adjust cooling water temperature in this way, guarantee that production system is stablized.
In another embodiment, the second cold water recyclable device can also be third heat exchanger such as finned heat exchanger,
After third heat exchanger carries out heat exchange processing to the water entered in it, will heat exchange treated water squeezes into third cold water recyclable device into
Row recycling.That is, by the second waste heat exchange system heat exchange treated water, the water that cold water outlet comes out can continue
By the processing of third heat exchanger, so as to continue to cool down to water；The water that its hot water outlet comes out can enter cooling tower
Cool down, so as to arbitrarily adjust cooling water temperature.
In one embodiment, the third cold water recyclable device can be temporary storage tank 112, and the temporary storage tank 112 goes out
The mouth of a river is connected to the cold water inlet of second heat exchanger, to recycle cooling water.Alternatively, third cold water recyclable device
Including the condenser, to recycle cooling water.The temporary storage tank uses sealed shell of tank, UTILIZATION OF VESIDUAL HEAT IN system entire in this way
The pressure loss of uniting is smaller, and lift power used in the water supply pump of afterheat utilizing system is reduced, and reduces electric power energy consumption.
In one embodiment, the Decay heat removal system includes water tank 142, the water inlet of the water tank 142
It is connected to the water outlet of the cooling tower.The water tank is used to store cooling tower cooling water after cooling.
In one embodiment, the residual heat collection system can also include self priming pump, and self priming pump 113 is used for condenser
In cooling water be drawn into the hot water inlet of First Heat Exchanger；The Decay heat removal system can also include self priming pump, self priming pump
143 for the cooling water in water tank to be drawn into the water inlet of condenser.The self priming pump is preferably high priming stroke self priming pump, is protected
Card equipment also can normally extract cooling water out in high negative pressure, guarantee system negative regulation.
In one embodiment, the residual heat collection system includes flash tank 114, the venthole of the flash tank 114 with
The air intake of the condenser is connected to.
In one embodiment, the second waste heat exchange system includes water supply pump 132, and the water supply pump 132 is used for institute
The water outlet for stating temporary storage tank is connected to the hot water inlet of second heat exchanger.
In one embodiment, the hot water that the residual heat collection system generates is directly entered First Heat Exchanger, and centre is not set
Buffer tank is set, avoids generating secondary steam thermal loss, steam heat can be utilized to greatest extent.
In one embodiment, when First Heat Exchanger and the second heat exchanger are plate heat exchanger, into plate-type heat-exchange
The pressure of device is preferably not lower than 0.1MPa, to guarantee the flow velocity in heat exchanger, prevents flow velocity too low, and material is heavy in hot water
Product causes the reduction of the plate heat exchanger coefficient of heat transfer.
In a specific embodiment, as shown in Fig. 2, flash-off steam is introduced directly into contact by the afterheat utilizing system
Condenser.
In condenser, (69 DEG C or so) of flash-off steam cooled water (32 DEG C) are cooled to condensed water (56 DEG C), and flash distillation is steamed
Cooling water (32 DEG C) is heated into hot cooling water (56 DEG C) by the heat of vapour release, and heat is transferred in cooling water from flash-off steam
Portion.
Hot cooling water (56 DEG C) is extracted out by condenser self priming pump, is sent to drying plate and is changed inside, carrys out cold water with drying
(27 DEG C) exchange heat, and drying is carried out cold water and is heated, and hot cooling water temperature after the first waste heat exchange system reaches 40 DEG C, into
Enter extraction water plate and changes continuation heat release.
Cooling water temperature directly squeezes into condensation if cooling water temperature reaches 32 DEG C after heat release after observation continuation heat release
Device circulating cooling；If temperature is still higher than 35 DEG C after heat exchange, squeezes into cooling tower and radiate, reach squeeze into after temperature requirement it is cold
Condenser circulating cooling.
The implementation data of above-mentioned afterheat utilizing system are to carry out the summer based on environment temperature higher than 25 DEG C,.For example,
Described in winter operation when afterheat utilizing system, since environment temperature is lower, hot cooling water is only needed by dry plate heat exchanger
Afterwards, temperature will be reduced to 35 DEG C hereinafter, not needing to exchange heat using extraction plate heat exchanger.
Using above-mentioned afterheat utilizing system, which possesses multiple heat dissipation, so that eventually entering into the coolant water temperature of condenser
Degree is lower, can not only make negative pressure vapour system vacuum degree lower, can also reduce cooling water amount.
In a specific embodiment, a kind of afterheat utilizing system may be implemented drying system supply air temperature and promote 20
DEG C (average) is equivalent to and saves steam 1.2t/h and be converted to the waste heat of waste so that can not only reduce production system energy consumption
Production system heat, can also improve system thermal utilization rate.
To sum up, in the use of the present invention, production system energy consumption can be reduced, the waste heat of waste is converted to production system and is used
Heat improves system thermal utilization rate.
After use of the present invention, due to possessing multiple heat dissipation behind afterheat utilizing system, the cooling water of condenser is eventually entered into
Temperature is lower, and vacuum flash system vacuum can be made lower.
After use of the present invention, due to possessing multiple heat dissipation behind afterheat utilizing system, the cooling water of condenser is eventually entered into
Temperature is lower, can reduce cooling water amount.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (8)
1. a kind of afterheat utilizing system, which is characterized in that including residual heat collection system, the first waste heat exchange system, the second waste heat
Exchange system and Decay heat removal system, in which:
Residual heat collection system includes: condenser, and the venthole of the air intake of the condenser and external steam generating device connects
It is logical；
First waste heat exchange system includes: First Heat Exchanger, the hot water inlet of the First Heat Exchanger and going out for the condenser
Mouth of a river connection；
Second waste heat exchange system includes: the second heat exchanger, the hot water inlet of second heat exchanger and the heat of First Heat Exchanger
Water outlet connection；
Decay heat removal system includes: cooling tower, and the water inlet of the cooling tower is connected to the hot water outlet of second heat exchanger；
The First Heat Exchanger squeezes into the first cold water recycling dress after heat exchange processing, by the water of heat exchange treated the first temperature
It sets, the water of heat exchange treated second temperature is squeezed into the second heat exchanger, the first temperature is lower than preset temperature, and second temperature is higher than
Preset temperature；
Second heat exchanger carries out heat exchange processing after receiving the water that First Heat Exchanger is squeezed into, will after heat exchange processing
The water of heat exchange treated third temperature squeezes into the second cold water recyclable device, the water of heat exchange treated the 4th temperature is squeezed into cold
But tower；Third temperature is lower than the preset temperature, and the 4th temperature is higher than the preset temperature.
2. the system as claimed in claim 1, which is characterized in that
The First Heat Exchanger includes extraction plate heat exchanger, and second heat exchanger includes dry plate heat exchanger；Or
The First Heat Exchanger includes dry plate heat exchanger, and second heat exchanger includes extraction plate heat exchanger.
3. the system as claimed in claim 1, which is characterized in that
The first cold water recyclable device and/or the second cold water recyclable device include condenser；Or
Second cold water recyclable device includes third heat exchanger, and treated that water squeezes into the recycling of third cold water for the heat exchange of third heat exchanger
Device.
4. system as claimed in claim 3, which is characterized in that
The third cold water recyclable device includes temporary storage tank, the cold water inlet of the water outlet of the temporary storage tank and second heat exchanger
Mouth connection；Or
The third cold water recyclable device includes the condenser.
5. the system as claimed in claim 1, which is characterized in that
The Decay heat removal system includes water tank, and the water inlet of the water tank is connected to the water outlet of the cooling tower.
6. the system as claimed in claim 1, which is characterized in that
The residual heat collection system includes self priming pump, the self priming pump for the First Heat Exchanger hot water inlet with it is described cold
The water outlet of water recovery device is connected to；
The Decay heat removal system includes self priming pump, and the self priming pump is filled for the water tank water outlet and cold water recycling
Set the connection of water inlet.
7. the system as claimed in claim 1, which is characterized in that
The residual heat collection system includes flash tank, and the venthole of the flash tank is connected to the air intake of the condenser.
8. the system as claimed in claim 1, which is characterized in that
The second waste heat exchange system includes water supply pump, and the water supply pump is used for the water outlet and described second of the temporary storage tank
The hot water inlet of heat exchanger is connected to.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810940928.6A CN109186300B (en) | 2018-08-17 | 2018-08-17 | Waste heat utilization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810940928.6A CN109186300B (en) | 2018-08-17 | 2018-08-17 | Waste heat utilization system |
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| CN109186300A true CN109186300A (en) | 2019-01-11 |
| CN109186300B CN109186300B (en) | 2020-01-10 |
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| CN201810940928.6A Active CN109186300B (en) | 2018-08-17 | 2018-08-17 | Waste heat utilization system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116879066A (en) * | 2023-09-04 | 2023-10-13 | 天津亭华科技有限公司 | Gas cylinder fatigue composite environment test system capable of controlling medium temperature |
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| CN109186300B (en) | 2020-01-10 |
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