CN106765259B - A kind of energy-efficient method of boiler afterheat recycling - Google Patents
A kind of energy-efficient method of boiler afterheat recycling Download PDFInfo
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- CN106765259B CN106765259B CN201611046825.2A CN201611046825A CN106765259B CN 106765259 B CN106765259 B CN 106765259B CN 201611046825 A CN201611046825 A CN 201611046825A CN 106765259 B CN106765259 B CN 106765259B
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- waste
- flue
- heat
- spare
- heat recoverer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The invention discloses a kind of boiler afterheats to recycle energy-efficient method, include mainly that flue detaches, waste-heat recoverer is set, control the connection between each waste-heat recoverer, UTILIZATION OF VESIDUAL HEAT IN and the distribution of spare flue, the present invention is shunted boiler flue, it is set to be divided into multiple common flue collectors and multiple spare spare flues, the cigarette and heat for making boiler discharge are shunted in multiple common flue collectors, heat is recycled equipped with multiple classification waste-heat recoverers in flue collector and spare flue, and thermal energy is passed into higher level-one waste-heat recoverer by aqueous medium successively, and spare flue can be participated in the case where waste heat can not be fully allocated in multiple flue collectors in the work of waste heat recovery, using more convenient, applicability is stronger, waste heat recovery effect higher, remarkable in economical benefits improves.
Description
Technical field
The present invention relates to boiler afterheat recovery technology fields, and more specifically more particularly to a kind of recycling of boiler afterheat saves
The method of energy.
Background technology
For various reasons, exhaust gas temperature is higher for conventional boiler, and chimney (gas) waste heat can not efficiently use, and wastes a large amount of
Fuel and efficient heat can improve pot if the smoke exhaust heat of boiler can maximumlly being recycled and being used
The efficiency of furnace, economic benefit and social benefit.Only it is in the past simply in chimney for the method for boiler exhaust gas heat recovery
Waste-heat recovery device is installed in (road), although also having recycled a part of heat, since structure design is unreasonable, chimney (road)
Do not shunted, and waste-heat recovery device can not carry out effectively being classified recycling heat, still cause a big chunk waste heat
Waste, to this, we release a kind of boiler afterheat and recycle energy-efficient method.
Invention content
The purpose of the present invention is to solve disadvantages existing in the prior art, and a kind of boiler afterheat recycling section proposed
The method of energy.
To achieve the goals above, present invention employs following technical solutions：
A kind of energy-efficient method of boiler afterheat recycling, includes the following steps：
S1, flue separation：Shunting 3-5 flue collector of setting and 1-3 spare flues on the outlet flue of boiler, and it is each
Spare flue is opened and closed by solenoid valve；
S2, setting waste-heat recoverer：2-5 classification waste heat is set gradually on each flue collector and each spare flue
Recover, and connected by water pipe between each classification waste-heat recoverer, the recycling of waste heat is used for using water as medium；
Connection between S3, each waste-heat recoverer of control：It is equipped on each classification waste-heat recoverer and connects with water pipe
It is equipped with temperature sensor, and two neighboring point on the solenoid valve connect, two level waste-heat recoverer and the following waste-heat recoverer of two level
The temperature difference of temperature sensor is 10-20 DEG C on grade waste-heat recoverer, more than classification where each temperature sensor is respectively connected with control
Water is sent to upper level waste heat and returned by the controller of heat regenerator solenoid after the temperature of waste-heat recoverer reaches setting value
Device is received to be absorbed heat again；
S4, UTILIZATION OF VESIDUAL HEAT IN：Two level waste-heat recoverer is also connected by water pipe and solenoid valve with boiler, and two level waste heat returns
It receives the controller that temperature sensor is connected on device and controls the solenoid valve, level-one waste-heat recoverer is equipped with steam (vapor) outlet, and one
The steam (vapor) outlet of grade waste-heat recoverer leads to the steam (vapor) outlet of boiler by pipeline, and pipeline is equipped with pressure-control valve, pressure control
Valve processed is according to the steam pressure automatic open-close of level-one waste-heat recoverer；
S5, the distribution of spare flue：It is a main chimney flue that the outlet flue of all flue collectors and all spare flues, which converges, and
Main chimney flue is equipped with temperature sensor identical with spare flue quantity, and each temperature sensor is respectively connected with control wherein one
Solenoid valve on a spare flue, the sensing temperature difference between each temperature sensor are 20-60 DEG C, the total cigarette of temperature sensor senses
Temperature difference in road controls the folding of each spare flue respectively.
Preferably, water supply pump is equipped on afterbody waste-heat recoverer.
Preferably, the temperature sensor senses temperature on the two level waste-heat recoverer is 70-80 DEG C.
Preferably, the minimum temperature sensor of one of temperature sensor is 60-80 DEG C in the main chimney flue.
Preferably, at least provided with three-level waste-heat recoverer on each flue collector and each spare flue.
A kind of boiler afterheat provided by the invention recycles energy-efficient method, and advantageous effect is：The present invention is by boiler flue
It is shunted, it is made to be divided into multiple common flue collectors and multiple spare spare flues, the cigarette and heat for so that boiler is discharged
Shunting returns heat equipped with multiple classification waste-heat recoverers in multiple common flue collectors, flue collector and spare flue
It receives, and gives thermal energy to higher level-one waste-heat recoverer by Water transport successively, and spare flue can not be complete in multiple flue collectors
It is participated in the work of waste heat recovery in the case of full distribution waste heat, using more convenient, applicability is stronger, and waste heat recovery effect is more
Height, remarkable in economical benefits improve.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with specific embodiment, to this
Invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
Embodiment 1
A kind of energy-efficient method of boiler afterheat recycling, includes the following steps：
S1, flue separation：Shunting 3 flue collectors of setting and 1 spare flue on the outlet flue of boiler, and it is each spare
Flue is opened and closed by solenoid valve；
S2, setting waste-heat recoverer：2 classification waste heats are set gradually on each flue collector and each spare flue to return
Device is received, and is connected by water pipe between each classification waste-heat recoverer, the recycling of waste heat, each main cigarette are used for using water as medium
Road and each spare flue are equipped with three-level waste-heat recoverer；
Connection between S3, each waste-heat recoverer of control：It is equipped on each classification waste-heat recoverer and connects with water pipe
It is equipped with temperature sensor, and two neighboring point on the solenoid valve connect, two level waste-heat recoverer and the following waste-heat recoverer of two level
The temperature difference of temperature sensor is 10 DEG C on grade waste-heat recoverer, and classification waste heat returns where each temperature sensor is respectively connected with control
Water is sent to upper level waste-heat recoverer by the controller for receiving device solenoid after the temperature of waste-heat recoverer reaches setting value
It is absorbed heat again, water supply pump is equipped on afterbody waste-heat recoverer；
S4, UTILIZATION OF VESIDUAL HEAT IN：Two level waste-heat recoverer is also connected by water pipe and solenoid valve with boiler, and two level waste heat returns
It receives the controller that temperature sensor is connected on device and controls the solenoid valve, the temperature sensor senses temperature on two level waste-heat recoverer
Degree is 70 DEG C, and level-one waste-heat recoverer is equipped with steam (vapor) outlet, and the steam (vapor) outlet of level-one waste-heat recoverer is led to by pipeline
The steam (vapor) outlet of boiler, pipeline are equipped with pressure-control valve, pressure-control valve according to the steam pressure of level-one waste-heat recoverer from
Dynamic folding；
S5, the distribution of spare flue：It is a main chimney flue that the outlet flue of all flue collectors and all spare flues, which converges, and
Main chimney flue is equipped with temperature sensor identical with spare flue quantity, the minimum sense of one of temperature sensor in main chimney flue
It is 60 DEG C to answer temperature, and each temperature sensor is respectively connected with the solenoid valve controlled on one of them spare flue, each temperature
The sensing temperature difference between sensor is 20 DEG C, and the temperature difference in temperature sensor senses main chimney flue controls each spare flue respectively
Folding.
Embodiment 2
A kind of energy-efficient method of boiler afterheat recycling, includes the following steps：
S1, flue separation：Shunting 4 flue collectors of setting and 2 spare flues on the outlet flue of boiler, and it is each spare
Flue is opened and closed by solenoid valve；
S2, setting waste-heat recoverer：3 classification waste heats are set gradually on each flue collector and each spare flue to return
Device is received, and is connected by water pipe between each classification waste-heat recoverer, the recycling of waste heat, each main cigarette are used for using water as medium
Road and each spare flue are equipped with three-level waste-heat recoverer；
Connection between S3, each waste-heat recoverer of control：It is equipped on each classification waste-heat recoverer and connects with water pipe
It is equipped with temperature sensor, and two neighboring point on the solenoid valve connect, two level waste-heat recoverer and the following waste-heat recoverer of two level
The temperature difference of temperature sensor is 15 DEG C on grade waste-heat recoverer, and classification waste heat returns where each temperature sensor is respectively connected with control
Water is sent to upper level waste-heat recoverer by the controller for receiving device solenoid after the temperature of waste-heat recoverer reaches setting value
It is absorbed heat again, water supply pump is equipped on afterbody waste-heat recoverer；
S4, UTILIZATION OF VESIDUAL HEAT IN：Two level waste-heat recoverer is also connected by water pipe and solenoid valve with boiler, and two level waste heat returns
It receives the controller that temperature sensor is connected on device and controls the solenoid valve, the temperature sensor senses temperature on two level waste-heat recoverer
Degree is 75 DEG C, and level-one waste-heat recoverer is equipped with steam (vapor) outlet, and the steam (vapor) outlet of level-one waste-heat recoverer is led to by pipeline
The steam (vapor) outlet of boiler, pipeline are equipped with pressure-control valve, pressure-control valve according to the steam pressure of level-one waste-heat recoverer from
Dynamic folding；
S5, the distribution of spare flue：It is a main chimney flue that the outlet flue of all flue collectors and all spare flues, which converges, and
Main chimney flue is equipped with temperature sensor identical with spare flue quantity, the minimum sense of one of temperature sensor in main chimney flue
It is 70 DEG C to answer temperature, and each temperature sensor is respectively connected with the solenoid valve controlled on one of them spare flue, each temperature
The sensing temperature difference between sensor is 40 DEG C, and the temperature difference in temperature sensor senses main chimney flue controls each spare flue respectively
Folding.
Embodiment 3
A kind of energy-efficient method of boiler afterheat recycling, includes the following steps：
S1, flue separation：Shunting 5 flue collectors of setting and 3 spare flues on the outlet flue of boiler, and it is each spare
Flue is opened and closed by solenoid valve；
S2, setting waste-heat recoverer：5 classification waste heats are set gradually on each flue collector and each spare flue to return
Device is received, and is connected by water pipe between each classification waste-heat recoverer, the recycling of waste heat, each main cigarette are used for using water as medium
Road and each spare flue are equipped with three-level waste-heat recoverer；
Connection between S3, each waste-heat recoverer of control：It is equipped on each classification waste-heat recoverer and connects with water pipe
It is equipped with temperature sensor, and two neighboring point on the solenoid valve connect, two level waste-heat recoverer and the following waste-heat recoverer of two level
The temperature difference of temperature sensor is 20 DEG C on grade waste-heat recoverer, and classification waste heat returns where each temperature sensor is respectively connected with control
Water is sent to upper level waste-heat recoverer by the controller for receiving device solenoid after the temperature of waste-heat recoverer reaches setting value
It is absorbed heat again, water supply pump is equipped on afterbody waste-heat recoverer；
S4, UTILIZATION OF VESIDUAL HEAT IN：Two level waste-heat recoverer is also connected by water pipe and solenoid valve with boiler, and two level waste heat returns
It receives the controller that temperature sensor is connected on device and controls the solenoid valve, the temperature sensor senses temperature on two level waste-heat recoverer
Degree is 80 DEG C, and level-one waste-heat recoverer is equipped with steam (vapor) outlet, and the steam (vapor) outlet of level-one waste-heat recoverer is led to by pipeline
The steam (vapor) outlet of boiler, pipeline are equipped with pressure-control valve, pressure-control valve according to the steam pressure of level-one waste-heat recoverer from
Dynamic folding；
S5, the distribution of spare flue：It is a main chimney flue that the outlet flue of all flue collectors and all spare flues, which converges, and
Main chimney flue is equipped with temperature sensor identical with spare flue quantity, the minimum sense of one of temperature sensor in main chimney flue
It is 80 DEG C to answer temperature, and each temperature sensor is respectively connected with the solenoid valve controlled on one of them spare flue, each temperature
The sensing temperature difference between sensor is 60 DEG C, and the temperature difference in temperature sensor senses main chimney flue controls each spare flue respectively
Folding.
The present invention is shunted boiler flue, it is made to be divided into multiple common flue collectors and multiple spare spare cigarettes
Road, the cigarette for making boiler be discharged and heat shunting are equipped with multiple classifications in multiple common flue collectors, flue collector and spare flue
Waste-heat recoverer recycles heat, and gives thermal energy to higher level-one waste-heat recoverer, and spare cigarette by Water transport successively
Road can be participated in the case where waste heat can not be fully allocated in multiple flue collectors in the work of waste heat recovery.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (5)
1. a kind of boiler afterheat recycles energy-efficient method, include the following steps：
S1, flue separation：Shunting 3-5 flue collector of setting and 1-3 spare flues on the outlet flue of boiler, and it is each spare
Flue is opened and closed by solenoid valve；
It is characterized in that, further including following steps：
S2, setting waste-heat recoverer：2-5 classification waste heat recovery is set gradually on each flue collector and each spare flue
Device, and connected by water pipe between each classification waste-heat recoverer, the recycling of waste heat is used for using water as medium；
Connection between S3, each waste-heat recoverer of control：It is equipped on each classification waste-heat recoverer and connect with water pipe
It is equipped with temperature sensor on solenoid valve, two level waste-heat recoverer and the following waste-heat recoverer of two level, and more than two neighboring classification
The temperature difference of temperature sensor is 10-20 DEG C on heat regenerator, and classification waste heat returns where each temperature sensor is respectively connected with control
Water is sent to upper level waste-heat recoverer by the controller for receiving device solenoid after the temperature of waste-heat recoverer reaches setting value
It is absorbed heat again；
S4, UTILIZATION OF VESIDUAL HEAT IN：Two level waste-heat recoverer is also connected by water pipe and solenoid valve with boiler, and two level waste-heat recoverer
The controller that upper temperature sensor is connected controls the solenoid valve, and level-one waste-heat recoverer is equipped with steam (vapor) outlet, and more than level-one
The steam (vapor) outlet of heat regenerator leads to the steam (vapor) outlet of boiler by pipeline, and pipeline is equipped with pressure-control valve, pressure-control valve
According to the steam pressure automatic open-close of level-one waste-heat recoverer；
S5, the distribution of spare flue：It is a main chimney flue, and total cigarette that the outlet flue of all flue collectors and all spare flues, which converges,
Road is equipped with temperature sensor identical with spare flue quantity, and each temperature sensor is respectively connected with control one of them is standby
With the solenoid valve on flue, the sensing temperature difference between each temperature sensor is 20-60 DEG C, in temperature sensor senses main chimney flue
Temperature difference control the folding of each spare flue respectively.
2. a kind of boiler afterheat according to claim 1 recycles energy-efficient method, it is characterised in that：In afterbody waste heat
Recover is equipped with water supply pump.
3. a kind of boiler afterheat according to claim 1 recycles energy-efficient method, it is characterised in that：The two level waste heat returns
It is 70-80 DEG C to receive the temperature sensor senses temperature on device.
4. a kind of boiler afterheat according to claim 1 recycles energy-efficient method, it is characterised in that：In the main chimney flue its
In a temperature sensor minimum temperature sensor be 60-80 DEG C.
5. a kind of boiler afterheat according to claim 1 recycles energy-efficient method, it is characterised in that：Each flue collector and every
At least provided with three-level waste-heat recoverer on a spare flue.
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| CN201611046825.2A CN106765259B (en) | 2016-11-23 | 2016-11-23 | A kind of energy-efficient method of boiler afterheat recycling |
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| CN201611046825.2A CN106765259B (en) | 2016-11-23 | 2016-11-23 | A kind of energy-efficient method of boiler afterheat recycling |
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| CN106765259B true CN106765259B (en) | 2018-09-18 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087861A (en) * | 2017-12-22 | 2018-05-29 | 芜湖德司节能科技有限公司 | A kind of boiler afterheat combined reclamation method |
| CN112879935B (en) * | 2021-01-27 | 2022-12-27 | 北京北燃供热有限公司 | Boiler flue gas waste heat recovery-based optimal control method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4012191A (en) * | 1975-06-18 | 1977-03-15 | Foster Wheeler Energy Corporation | System for recovering heat from the exhaust gases of a heat generator |
| JP3587744B2 (en) * | 1999-08-26 | 2004-11-10 | 株式会社 日立インダストリイズ | Waste heat recovery method and waste heat recovery device for exhaust gas |
| CN102031999A (en) * | 2010-11-23 | 2011-04-27 | 江苏丰泰冷却塔有限公司 | Thermal power generator set with high-efficient circulating system |
| CN103134041A (en) * | 2011-11-25 | 2013-06-05 | 江苏海德节能科技有限公司 | Multistage waste heat recovery unit |
| CN102767820B (en) * | 2012-06-27 | 2015-07-15 | 华北电力大学 | Smoke waste heat utilizing system at tail of power station boiler applicable to operation in variable working condition |
| CN104296547B (en) * | 2014-05-05 | 2016-03-30 | 山东省能源与环境研究院 | A kind of cement rotary kiln bootstrap system that flash vessel is set |
| CN205505820U (en) * | 2016-04-07 | 2016-08-24 | 游静涛 | Waste gas waste heat recovery device of boiler |
| CN105953248B (en) * | 2016-06-24 | 2018-04-06 | 山东钢铁股份有限公司 | A kind of heater for rolling steel residual neat recovering system |
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Address after: Room 104, building 1, No. 50, wanghong Road, Wangniudun Town, Dongguan City, Guangdong Province 523000 Patentee after: GUANGDONG DONGRE NEW ENERGY TECHNOLOGY Co.,Ltd. Address before: 523000 Guangdong province Dongguan wangniudunzhen under Cao Cun Dong Long building four floor B Patentee before: GUANGDONG DONGRAN THERMAL TECHNOLOGY Co.,Ltd. |
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