WO2017089869A1 - Tour de lavage comme échangeur de chaleur pour équipement unique de valorisation énergétique de fumées d'échappement - Google Patents

Tour de lavage comme échangeur de chaleur pour équipement unique de valorisation énergétique de fumées d'échappement Download PDF

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Publication number
WO2017089869A1
WO2017089869A1 PCT/IB2015/059116 IB2015059116W WO2017089869A1 WO 2017089869 A1 WO2017089869 A1 WO 2017089869A1 IB 2015059116 W IB2015059116 W IB 2015059116W WO 2017089869 A1 WO2017089869 A1 WO 2017089869A1
Authority
WO
WIPO (PCT)
Prior art keywords
efficiency
heat
liquid
tower
washing tower
Prior art date
Application number
PCT/IB2015/059116
Other languages
English (en)
Inventor
Michel BRIANT
Original Assignee
Briant Michel
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 Briant Michel filed Critical Briant Michel
Priority to PCT/IB2015/059116 priority Critical patent/WO2017089869A1/fr
Publication of WO2017089869A1 publication Critical patent/WO2017089869A1/fr

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Classifications

    • 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
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
    • 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
    • F24H8/006—Means for removing condensate from the heater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2217/00—Intercepting solids
    • F23J2217/50—Intercepting solids by cleaning fluids (washers or scrubbers)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
    • F23J2900/11001—Conducting systems with a gas flow bypass from main flue to an auxiliary flue
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/06—Solid fuel fired boiler
    • F24D2200/065—Wood fired boilers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/16—Waste heat
    • F24D2200/18—Flue gas recuperation
    • 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
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy

Definitions

  • the purpose of the invention is to improve the heat recovery from heating appliances and internal combustion engines, and at the same time clean the exhaust fumes. Both functions are achieved by using a single wet scrubber and the only heat recovery of the exhaust fume energy is done by the washing liquid.
  • the main example is the production of electricity by burning any carbon compound, which most of the time requires steam at above 200°C.
  • Another important application is steam networks for heating purposes but it requires heat at above 100°C.
  • the US patent 4,359,006 is an example of an industrial process using a wet scrubber as heat recovery, but the exhaust gas is first cooled by air injection and then the energy is used to dry waste before entering the washing tower.
  • the Chinese patent 101445852 describes a wet dedusting system, but the gas is first cooled before entering the wet scrubber. For the industry simpler solutions haven't been found because usually the
  • Famous wood boilers such as Eta or Hargassner have an efficiency around 84% HHV.
  • the invention allows an efficiency around 96% HHV and captures around 99% of smoke particles.
  • the invention requires one heat exchanger and one water circuit more than the standard design but regarding the complexity of the usual automatic heat exchanger scraping, it's nothing.
  • Standard wood stoves have an efficiency around 70% HHV, with the new technique it will be around 95% HHV.
  • the invention is much simpler than most of the industrial installations but can't be used in most of those cases.
  • the solution is more complicated than most of the existing systems but allows a better efficiency and the possibility to clean the gases at the same time.
  • figure 1 just gives an idea of what a domestic wood heating appliance may look like. Most of the time it will be technically a mixture between figure 2 and figure 3.
  • the fresh air 15 goes to the combustion area1.
  • the hot gas 2 reaches the washing tower 3, where it's cooled and cleaned, and then escapes through the chimney 4.
  • the liquid which has been heated into the wet scrubber 3 gets cooled in the radiator 12 (the radiator can be fitted with a fan to increase the liquid cooling effect and so increase the system efficiency) and then the pump 13 pushes the liquid back to the scrubber for a new cycle.
  • some liquid is stored at the scrubber bottom and in 14 we get an overflow and a sludge drainage valve.
  • the overflow allows the excess liquid coming from the gas condensation to escape the system. By opening the drainage valve from time to time the sludge is sent to the sewage system.
  • the overflow and drainage can end up in a removable tank, to be emptied daily for example if the surrounding doesn't offer another choice.
  • sludge can be important if it's a wood heater, in case of charcoal, diesel or oil it will be less and nearly nonexistent in the case of a gas burner, so the drainage timing can be different.
  • the excess liquid produced by the steam condensation can also be used to flush the ash if the combustion produces some, and so facilitating the maintenance by preventing dust.
  • the liquid which has been heated in the wet scrubber 3 arrives at the tank 16, then the pump 13 pushes it to the heat exchanger JJ. (usage can be for hot tap water, sorption cooler, sorption freezer and heating network) and then cooled again in the heat exchanger 10 (usage can be for lower temperature heating network, underfloor heating network or hot air blower) finally the liquid arrives back at the scrubber for a new cycle.
  • usage can be for hot tap water, sorption cooler, sorption freezer and heating network
  • usage can be for lower temperature heating network, underfloor heating network or hot air blower
  • the liquid which has been heated in the wet scrubber 3 gets cooled in the heat exchanger 10 (heat exchanger 10 can be on the same line as the heat exchanger JJ_ but if the need of product supplied by the heat exchanger JJ_ is more important, then having 2 lines will be more efficient), then the liquid goes back to the scrubber.
  • the heat delivered by the heat exchanger JJ. can for example be first used for a sorption cooler or freezer, then to a water distillation system. Before going back to the wet scrubber 3 the liquid may have been in contact with some limestone or some chemicals may have been injected to reduce the amount of sulfuric compound of the exhaust fumes. The same system as in this paragraph can be used on a boiler.
  • the engine cooling liquid can be used as a simple heater with the radiator 12, or can be used for water distillation as on some ships, or for multiple tasks as the heat exchanger JJ_.

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)

Abstract

L'invention vise à améliorer le rendement de poêles, chaudières, brûleurs, cheminées et moteurs à combustion interne concernant la récupération de chaleur, et ce faisant, l'épuration des fumées d'échappement. Des procédés compliqués existent dans l'industrie, mais il n'y a rien de simple pour l'usage domestique ou dans des applications nécessitant une température inférieure à 100 °C ; le but de l'invention est de réaliser, en une seule étape, la récupération de chaleur et l'épuration de fumées. Le laveur dans une étape permet de réduire la température de la source de chaleur de 2000 °C à moins de 30 °C, selon l'application. Comme les réglementations évoluent et que le réchauffement climatique s'accroît, des solutions doivent être trouvées à un coût raisonnable. Lorsque la solution est simple, le coût est faible et la technologie peut être largement répandue. La tour de lavage en tant qu'échangeur de chaleur fonctionne par condensation de la majeure partie de l'eau des fumées d'échappement, ce qui permet au système de ne pas avoir à ajouter d'eau pendant le fonctionnement et de pouvoir obtenir un rendement proche de 100 % (HHV) pour une application de chauffage. A titre d'exemple, cette technique permet la récupération de chaleur d'un brûleur de biomasse ayant un rendement d'environ 106 % (Pouvoir Calorifique Inférieur, LHV, couramment utilisée en Europe) ou proche de 96 % (Pouvoir Calorifique Supérieur, HHV, couramment utilisée en Amérique du Nord). Les différentes normes concernant la récupération de la chaleur latente de la condensation de l'eau expliquent l'écart de valeurs. Ce rendement devrait être comparé au rendement habituel de 70 % HHV d'un appareil à bois standard. En améliorant considérablement le rendement d'un poêle ou d'une chaudière, l'invention permet également le traitement de fumées, qui n'est jamais réalisé pour des applications domestiques.
PCT/IB2015/059116 2015-11-25 2015-11-25 Tour de lavage comme échangeur de chaleur pour équipement unique de valorisation énergétique de fumées d'échappement WO2017089869A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IB2015/059116 WO2017089869A1 (fr) 2015-11-25 2015-11-25 Tour de lavage comme échangeur de chaleur pour équipement unique de valorisation énergétique de fumées d'échappement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2015/059116 WO2017089869A1 (fr) 2015-11-25 2015-11-25 Tour de lavage comme échangeur de chaleur pour équipement unique de valorisation énergétique de fumées d'échappement

Publications (1)

Publication Number Publication Date
WO2017089869A1 true WO2017089869A1 (fr) 2017-06-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2015/059116 WO2017089869A1 (fr) 2015-11-25 2015-11-25 Tour de lavage comme échangeur de chaleur pour équipement unique de valorisation énergétique de fumées d'échappement

Country Status (1)

Country Link
WO (1) WO2017089869A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4359006A (en) 1979-03-26 1982-11-16 Henrik Have Method of extracting heat from manure sewage mud and other wet waste by combustion
EP0233971A1 (fr) * 1986-02-24 1987-09-02 NTG Neue Technologien GmbH & Co. KG Procédé pour l'épuration des fumées des installations de chauffage domestiques à mazout
DE3709392A1 (de) * 1986-03-31 1987-10-01 Bauakademie Ddr Verfahren zur rauchgasbehandlung
CN101445852A (zh) 2007-11-28 2009-06-03 中国京冶工程技术有限公司 一种转炉煤气湿法降温除尘方法
GB2494668A (en) * 2011-09-15 2013-03-20 Glyn Hughes Stove with liquid spray collecting smoke particles
EP2930426A1 (fr) * 2014-04-11 2015-10-14 Hans Full Échangeur thermique de gaz d'échappement et procédé destiné à la récupération de chaleur à partir de gaz d'échappement

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4359006A (en) 1979-03-26 1982-11-16 Henrik Have Method of extracting heat from manure sewage mud and other wet waste by combustion
EP0233971A1 (fr) * 1986-02-24 1987-09-02 NTG Neue Technologien GmbH & Co. KG Procédé pour l'épuration des fumées des installations de chauffage domestiques à mazout
DE3709392A1 (de) * 1986-03-31 1987-10-01 Bauakademie Ddr Verfahren zur rauchgasbehandlung
CN101445852A (zh) 2007-11-28 2009-06-03 中国京冶工程技术有限公司 一种转炉煤气湿法降温除尘方法
GB2494668A (en) * 2011-09-15 2013-03-20 Glyn Hughes Stove with liquid spray collecting smoke particles
EP2930426A1 (fr) * 2014-04-11 2015-10-14 Hans Full Échangeur thermique de gaz d'échappement et procédé destiné à la récupération de chaleur à partir de gaz d'échappement

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