WO2022206015A1 - Système de récupération de chaleur perdue de gaz de combustion d'eau de condensation et de récupération d'eau pour chaudière à eau chaude à gaz - Google Patents

Système de récupération de chaleur perdue de gaz de combustion d'eau de condensation et de récupération d'eau pour chaudière à eau chaude à gaz Download PDF

Info

Publication number
WO2022206015A1
WO2022206015A1 PCT/CN2021/136959 CN2021136959W WO2022206015A1 WO 2022206015 A1 WO2022206015 A1 WO 2022206015A1 CN 2021136959 W CN2021136959 W CN 2021136959W WO 2022206015 A1 WO2022206015 A1 WO 2022206015A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
flue gas
heat
pipe
recovery system
Prior art date
Application number
PCT/CN2021/136959
Other languages
English (en)
Chinese (zh)
Inventor
官广成
梁雪
褚洪涛
唐晓东
赵明增
张周康
王超
Original Assignee
青岛新奥能源有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 青岛新奥能源有限公司 filed Critical 青岛新奥能源有限公司
Publication of WO2022206015A1 publication Critical patent/WO2022206015A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/0036—Dispositions against condensation of combustion products
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H8/00—Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/0042—Cleaning arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00—Heat pumps
    • F25B30/02—Heat pumps of the compression type
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • 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

Definitions

  • the invention relates to the technical field of boiler equipment, in particular to a flue gas waste heat and condensed water recovery system of a gas-fired hot water boiler.
  • the present invention provides a flue gas waste heat and condensation recovery system of a gas-fired hot water boiler, and the specific technical scheme is as follows.
  • a flue gas waste heat and condensation recovery system for a gas-fired hot water boiler comprising a screw heat pump unit, a heat exchanger, a variable frequency fan, a baffle plate demister and a water replenishing tank;
  • the screw heat pump unit is connected to a heating pipeline, and the screw heat pump unit It is also connected with the heat exchange pipeline of the heat exchanger;
  • the heat exchanger is arranged in the flue gas channel, the flue gas channel is provided with a variable frequency fan at the outlet, and the bypass flue is also arranged at the flue gas inlet of the flue gas channel;
  • the baffle plate mist eliminator is arranged in the flue gas passage, and the bottom of the flue gas passage is also provided with a condensing water pipe, which is connected with the water supplement tank; the supplement water tank is provided with a dosing device.
  • the screw heat pump unit is respectively connected with the heating water inlet pipeline and the heating return water pipeline, and the heating water inlet pipeline and the heating return water pipeline are connected to the heating pipe network.
  • the heat exchange pipeline includes a heat exchange water inlet pipe and a heat exchange water return pipe, the heat exchange water inlet pipe and the heat exchange water return pipe are respectively connected to the heat exchanger, and the heat exchange water inlet pipe and the heat exchange water return pipe are also connected to the screw heat pump unit.
  • the deflector mist eliminator is arranged downstream of the heat exchanger in the flue gas flow direction.
  • the dosing device adjusts the pH value of the water in the replenishment tank to 8-10.
  • a soundproof cover is set on the exterior of the screw heat pump unit.
  • the replenishment tank is connected to a replenishment pump, and the replenishment pump supplies water to the replenishment system of the heating pipe network.
  • an air volume sensor is arranged in the flue gas channel, and the air volume sensor controls the variable frequency fan in linkage.
  • the beneficial effects of the flue gas waste heat and condensation recovery system of the gas-fired hot water boiler include: setting a baffle plate mist eliminator in the flue gas channel to separate out the condensed water in the flue gas, and the variable frequency fan controls the flue gas channel.
  • the flow rate of the flue gas in the water supply tank is equipped with a dosing device so that the pH value in the water supply tank can be adjusted in time.
  • the water in the water supply tank is used for the water supply system of the pipe network.
  • the metal pipeline can also be passivated.
  • a soundproof cover is set outside the screw heat pump unit to avoid noise pollution of the screw heat pump unit; the system also has the advantages of simple structure, convenient adjustment, cleanliness and environmental protection.
  • Fig. 1 is a schematic diagram of the structure of a flue gas waste heat and condensation recovery system of a gas-fired hot water boiler;
  • Fig. 2 is the cross-sectional structure schematic diagram of the supplementary water tank
  • a flue gas waste heat and condensation recovery system for a gas-fired hot water boiler comprising a screw heat pump unit 1, a heat exchanger 2, a variable frequency fan 3, a baffle demister 4 and a water replenishing tank 5, and the screw heat pump unit 1 is used for absorbing smoke
  • the heat energy in the gas is used for heat exchange.
  • the heat exchanger further absorbs the heat energy of the flue gas in the flue gas channel. Air circulation.
  • the screw heat pump unit 1 is connected with the heating pipeline, which can provide a heat source for the heating system, and the screw heat pump unit 1 is also connected with the heat exchange pipeline of the heat exchanger to further realize the heat exchange of flue gas, which is used for the heating pipeline network.
  • the heat exchanger 2 is arranged in the flue gas channel, and a variable frequency fan 3 is arranged at the outlet of the flue gas channel to control the air volume in the flue gas channel.
  • the channel 13 can be used in the maintenance of the flue gas channel for emergency smoke exhaust.
  • the baffle plate mist eliminator 4 is arranged in the flue gas channel to capture the mist particles and slurry droplets entrained in the flue gas, which has a better demisting effect.
  • the condensed water in the channel goes down into the condensed water pipe, and the condensed water pipe 12 is connected to the water replenishment tank.
  • the condensed water pipe 12 can also be provided with a filter, and the filter is provided with a slag discharge valve.
  • the water replenishment tank 6 is provided with a dosing device, and a pH monitor is arranged in the water replenishment tank 6. According to the monitoring data of the pH monitor, the dosing device works to control the pH value of the water in the replenishment tank 6.
  • the screw heat pump unit 1 is respectively connected with the heating water inlet pipeline 8 and the heating return water pipeline 9, and the heating water inlet pipeline 8 and the heating return water pipeline 9 are connected to the heating pipe network; the cold water in the heating return water pipeline 9 is heated by the screw heat pump unit, and the heat The water enters the heating water inlet pipe 10 .
  • the heat exchange pipeline includes a heat exchange water inlet pipe 10 and a heat exchange return water pipe 11.
  • the heat exchange water inlet pipe 10 and the heat exchange return water pipe 11 are respectively connected to the heat exchanger 2.
  • the heat exchange water inlet pipe 10 and the heat exchange return water pipe 11 are also connected with the screw heat pump unit. 1 is connected, and the heat in the flue gas is reused to ensure that the heat of the exhaust flue gas is lower than 20 °C.
  • the baffle plate mist eliminator 4 is arranged downstream of the heat exchanger along the flow direction of the flue gas, the flue gas channel is arranged vertically, and the baffle plate mist eliminator 4 is arranged above the heat exchanger 2, so that the flue gas first passes through the heat exchange Then pass the defogger to ensure the effect of defogging.
  • the dosing device 7 adjusts the pH value of the water in the replenishment tank 6 to 8-10.
  • the condensed water in the make-up tank is used to make up water for the boiler and the pipe network, and can adjust the PH value of the hot water in the boiler and the pipe network, and delay the corrosion of the pipeline and the scaling of the boiler.
  • the outside of the screw heat pump unit 1 is provided with a soundproof cover, so that the influence of noise can be reduced.
  • the make-up water tank 6 is connected to the make-up pump 6, and the make-up pump 6 supplies water to the make-up water system of the heating pipe network.
  • An air volume sensor is arranged in the flue gas channel, and the air volume sensor is linked to control the variable frequency fan 3, and further intelligent control of the system can be realized.
  • the variable frequency fan uses a variable frequency negative pressure fan.
  • the system can separate the condensed water in the flue gas by setting the baffle plate mist eliminator in the flue gas channel, the variable frequency fan controls the flow rate of the flue gas in the flue gas channel, and the water supply tank is provided with a dosing device so that it can be timely Adjust the pH value in the water supply tank, and the water in the water supply tank is used for the water supply system of the pipe network.
  • the metal pipeline can be passivated to prevent scaling; the external soundproof cover of the screw heat pump unit can avoid the screw heat pump unit of noise pollution.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Treating Waste Gases (AREA)
  • Chimneys And Flues (AREA)

Abstract

Système de récupération de chaleur perdue de gaz de combustion et d'eau de condensation pour une chaudière à eau chaude à gaz, comprenant : une unité de pompe à chaleur à vis (1), un échangeur de chaleur (2), un ventilateur à fréquence variable (3), un désembueur à plaque déflectrice (4) et un réservoir de remplissage d'eau (5). L'unité de pompe à chaleur à vis (1) est reliée à des tuyaux de chauffage (8, 9) et est également reliée à des tuyaux d'échange de chaleur (10, 11) de l'échangeur de chaleur (2) ; l'échangeur de chaleur (2) et le désembueur à plaque déflectrice (4) sont disposés dans un passage de gaz de combustion ; le ventilateur à fréquence variable (3) est disposé au niveau de la sortie du passage de gaz de combustion, et un conduit de dérivation (13) est disposé au niveau de l'entrée du passage de gaz de combustion ; le fond du passage de gaz de combustion est doté d'un tuyau d'eau de condensation (12) relié au réservoir de remplissage d'eau (5) ; le réservoir de remplissage d'eau (5) est doté d'un dispositif d'alimentation (7) ; et une pompe à eau de remplissage (6) est reliée au réservoir d'eau de remplissage (5) et à un système de remplissage d'eau de réseau de tuyaux de chauffage. Le système peut recycler la chaleur perdue et réduire la corrosion du conduit par l'eau de condensation dans le gaz de combustion. L'eau de condensation peut également être utilisée pour le remplissage d'eau du réseau de tuyaux de chauffage. Le système présente une structure simple, est pratique à ajuster et peut protéger l'environnement.
PCT/CN2021/136959 2021-03-30 2021-12-10 Système de récupération de chaleur perdue de gaz de combustion d'eau de condensation et de récupération d'eau pour chaudière à eau chaude à gaz WO2022206015A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110337392.0A CN113028645A (zh) 2021-03-30 2021-03-30 一种燃气热水锅炉的烟气余热和冷凝回收系统
CN202110337392.0 2021-03-30

Publications (1)

Publication Number Publication Date
WO2022206015A1 true WO2022206015A1 (fr) 2022-10-06

Family

ID=76452690

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/136959 WO2022206015A1 (fr) 2021-03-30 2021-12-10 Système de récupération de chaleur perdue de gaz de combustion d'eau de condensation et de récupération d'eau pour chaudière à eau chaude à gaz

Country Status (2)

Country Link
CN (1) CN113028645A (fr)
WO (1) WO2022206015A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113028645A (zh) * 2021-03-30 2021-06-25 青岛新奥能源有限公司 一种燃气热水锅炉的烟气余热和冷凝回收系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101270872B1 (ko) * 2012-12-26 2013-06-05 조한얼 백연발생저감 및 이를 이용한 폐열 및 용수회수방법
CN103225834A (zh) * 2013-05-21 2013-07-31 青岛宏宇环保空调设备有限公司 锅炉烟气排污余热回收热泵供暖系统及其使用方法
CN103438575A (zh) * 2013-08-30 2013-12-11 北京金房暖通节能技术股份有限公司 燃气锅炉低温排烟深度利用系统及其控制方法
CN106996571A (zh) * 2017-05-17 2017-08-01 北京华源泰盟节能设备有限公司 一种燃煤热水锅炉烟气余热深度回收系统及其方法
CN108826688A (zh) * 2018-06-08 2018-11-16 廊坊劲华锅炉有限公司 冷凝锅炉
CN113028645A (zh) * 2021-03-30 2021-06-25 青岛新奥能源有限公司 一种燃气热水锅炉的烟气余热和冷凝回收系统

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204042946U (zh) * 2014-08-12 2014-12-24 天津诺能达能源科技有限公司 燃气锅炉烟气余热回收及烟气除雾系统
CN104534539A (zh) * 2015-01-08 2015-04-22 清华大学 一种燃气蒸汽联合循环集中供热装置及供热方法
CN206846764U (zh) * 2017-05-17 2018-01-05 北京华源泰盟节能设备有限公司 一种燃煤热水锅炉烟气余热深度回收系统
CN208720515U (zh) * 2018-06-08 2019-04-09 廊坊劲华锅炉有限公司 冷凝锅炉
CN109611878B (zh) * 2018-12-05 2021-05-28 新奥数能科技有限公司 一种锅炉烟气余热回收系统
CN209511961U (zh) * 2019-01-24 2019-10-18 双良节能系统股份有限公司 一种供暖热水锅炉烟气余热回收系统
CN109668133B (zh) * 2019-01-24 2024-03-12 江苏双良冷却系统有限公司 一种供暖热水锅炉烟气余热回收系统及其回收方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101270872B1 (ko) * 2012-12-26 2013-06-05 조한얼 백연발생저감 및 이를 이용한 폐열 및 용수회수방법
CN103225834A (zh) * 2013-05-21 2013-07-31 青岛宏宇环保空调设备有限公司 锅炉烟气排污余热回收热泵供暖系统及其使用方法
CN103438575A (zh) * 2013-08-30 2013-12-11 北京金房暖通节能技术股份有限公司 燃气锅炉低温排烟深度利用系统及其控制方法
CN106996571A (zh) * 2017-05-17 2017-08-01 北京华源泰盟节能设备有限公司 一种燃煤热水锅炉烟气余热深度回收系统及其方法
CN108826688A (zh) * 2018-06-08 2018-11-16 廊坊劲华锅炉有限公司 冷凝锅炉
CN113028645A (zh) * 2021-03-30 2021-06-25 青岛新奥能源有限公司 一种燃气热水锅炉的烟气余热和冷凝回收系统

Also Published As

Publication number Publication date
CN113028645A (zh) 2021-06-25

Similar Documents

Publication Publication Date Title
CN104048307B (zh) 一种烟气余热综合利用的装置
CN204026714U (zh) 一种烟气余热综合利用的装置
WO2016146084A1 (fr) Système de conditionnement d'air par pompe à chaleur à source d'eau à énergie solaire par tous les temps
CN107930309A (zh) 一种湿烟羽消除系统
CN108194939A (zh) 一种用于火电厂余热梯级利用和消白烟的装置及方法
CN106996571A (zh) 一种燃煤热水锅炉烟气余热深度回收系统及其方法
US20130255500A1 (en) Energy-saving electrostatic dust collector
CN107940439A (zh) 一种锅炉烟气热能循环利用系统
WO2022206015A1 (fr) Système de récupération de chaleur perdue de gaz de combustion d'eau de condensation et de récupération d'eau pour chaudière à eau chaude à gaz
CN207006217U (zh) 一种水媒式扩展空气预热器系统
CN108344180A (zh) 一种冷凝式燃气采暖炉
CN205825498U (zh) 一种多级回收燃气烟气余热的系统
CN208553614U (zh) 一种减轻烟气阻力的烟羽治理系统
CN214582606U (zh) 一种水媒式机力冷却塔消白系统
CN113983488A (zh) 一种燃煤机组锅炉空预器防堵系统及方法
CN106370040B (zh) 一种高效低阻热管余热回收装置
CN105021067A (zh) 大颗粒直通废水换热器及具有上述换热器的换热系统
CN104359223B (zh) 以汽轮机乏汽作为电站锅炉暖风器热介质的系统及方法
CN106016835A (zh) 一种多级回收燃气烟气余热的系统
CN207212386U (zh) 一种用于矿井回风热回收的气体通道
CN1563874A (zh) 潜热法烟气余热回收系统
CN107218592A (zh) 一种烟气余热综合控制系统及其使用方法
CN209688808U (zh) 一种除氧器乏汽回收系统
CN109502868B (zh) 一种三位一体结构污水处理的控制方法
CN112944948A (zh) 一种水媒式机力冷却塔消白系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21934651

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21934651

Country of ref document: EP

Kind code of ref document: A1