EP0132432A1 - Appareil de chauffage - Google Patents

Appareil de chauffage

Info

Publication number
EP0132432A1
EP0132432A1 EP84900401A EP84900401A EP0132432A1 EP 0132432 A1 EP0132432 A1 EP 0132432A1 EP 84900401 A EP84900401 A EP 84900401A EP 84900401 A EP84900401 A EP 84900401A EP 0132432 A1 EP0132432 A1 EP 0132432A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
tubes
furnace
solid fuel
gas
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP84900401A
Other languages
German (de)
English (en)
Inventor
Cedric Richard Jones
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FLEXIFUEL (TECHNOLOGY) Ltd
Original Assignee
FLEXIFUEL (TECHNOLOGY) Ltd
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 FLEXIFUEL (TECHNOLOGY) Ltd filed Critical FLEXIFUEL (TECHNOLOGY) Ltd
Publication of EP0132432A1 publication Critical patent/EP0132432A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/20—Arrangements for treatment or cleaning of waste gases
    • F27D17/22—Arrangements for treatment or cleaning of waste gases for removing solid constituents
    • F27D17/25—Arrangements for treatment or cleaning of waste gases for removing solid constituents using cyclones
    • 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
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply

Definitions

  • This invention relates to solid fuel fired heating apparatus.
  • Known heating apparatus comprise a furnace, which may be fired by oil, gas or solid fuel, and a heat exchanger.
  • a known shell boiler for example,- there is an inner cylindrical furnace co-axial with an outer shell, the space between the furnace and the shell incorporating the heat exchanger and containing a plurality of heat exchanging tubes through which hot combustion gas from the furnace is directed.
  • the direction of gas flow usually has to change between the furnace and the heat exchanger and the tubes may have one or more passes requiring the airflow to change from one direction to the opposite direction.
  • With relatively clean gases from gas and oil fired boilers the reversal of the gas causes few problems, but with coal fired furnaces the hot gas contains particles of ash and unburnt coal which can cause severe erosion of the boiler tube ends and tube bores.
  • heating apparatus for example so-called “water-tube” or “composite” boilers may have the same problems as discussed above.
  • the aim of the present invention is to provide a solid fuel fired heating apparatus which overcomes the above-mentioned problems.
  • a heating apparatus comprising a furnace, a heat exchanger to which exhaust gases can pass from the furnace, and a particle separating means which is arranged to separate particles from the exhaust gas stream passing from the furnace to the heat exchanger.
  • the particle separating means is a cyclonic separator designed to operate at the high temperatures of furnace exhaust gases.
  • Figures 1 to 3 are respectively diagrammatic views of the different forms of apparatus.
  • the forms of heating apparatus shown in Figure 1 comprises a solid fuel fired furnace 1, having an out ⁇ let 2 for hot exhaust gases which can flow to an inlet 3 of a separate heat exchanger 4.
  • a particle separator or gas cleaning device 5 Interposed between the furnace 1 and the heat exchanger 4 is a particle separator or gas cleaning device 5.
  • the separator 5 is arranged so that hot gas from the furnace outlet 2 is cleaned, the cleaned gas passing through the heat exchanger inlet 3.
  • Separated particles, which are of ash, soot and unburnt coal pass through a bottom outlet 6 of the separator 5 and can be discarded as waste or returned to the furnace 1 for reburning.
  • FIG 2 there is shown an apparatus comprising a shell boiler having an internal furnace 10 of cylindrical shape and surrounded by a co-axial cylind- rical outer shell 11.
  • the heat exchanger 13 which comprises a plurality of small bore convector tubes 14 which are located in the space 12.
  • a particle separator 15 Attached to an end face of the shell 11 is a particle separator 15. Exhaust gases from the furnace 10 pass through an outlet tube 16 to the separator 15 and the cleaned gas is directed to the tubes 14 of the heat exchanger.
  • the tubes 14 direct the gas through one or more passes of the exchanger, the direction of gas flow being changed by a reversal chamber (not shown), which may form part of the separator 15.
  • a reversal chamber not shown
  • particles separ ⁇ ated from the furnace exhaust gas stream are collected from an outlet 17 of the separator 15.
  • Figure 3 illustrates how the invention can be applied to a heating apparatus in the form of a water tube or composite boiler.
  • a furnace 20 is connected to a heat exchanger 21, of fire tube or water tube design, through the intermediary of a high temperature convection surface or superheater 22.
  • a particle separator 23 is located between the furnace 20 and the superheater 22.
  • the invention can be applied to process heating in which clean gases are required for dryers, furnaces or other heating processes.
  • existing gas or oil fired boilers could be readily converted to operate on solid fuel by replacing the existing burner or furnace by a solid fuel grate in combination with a high temperature separator.
  • the particle separator is preferably a cyclonic device which is designed to operate at high temperatures.
  • the cost of incorporating such a device would be balanced by the reduced cost of the heat exchanger, reduced maintenance costs and the elimination of costly tube replacement.
  • the use of the separ ⁇ ator between the furnace and the heat exchanger permits greater versatility of design since the heat exchanger does not have to cope with substantial exhaust particles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)

Abstract

Un appareil de chauffage alimenté en combustible solide comprend un foyer (1) et un échangeur thermique (4) vers lequel circule les gaz d'échappement provenant du foyer. Afin d'accroître le rendement de l'appareil, un séparateur de particules (5) est interposé entre le foyer et l'échangeur thermique pour en nettoyer les gaz d'échappement. Il est ainsi possible d'utiliser dans l'échangeur thermique des tubes ou retardateurs d'un alésage plus petit, tels que des serpentins sans que les tubes ou serpentins se bouchent et l'érosion des tubes par les particules est réduite ou éliminée. L'invention peut s'appliquer également à d'autres types de chauffage, où des gaz propres sont nécessaires pour des installations de séchage, des foyers ou d'autres processus de chauffage.
EP84900401A 1982-12-24 1983-12-22 Appareil de chauffage Withdrawn EP0132432A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8236768 1982-12-24
GB8236768 1982-12-24

Publications (1)

Publication Number Publication Date
EP0132432A1 true EP0132432A1 (fr) 1985-02-06

Family

ID=10535239

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84900401A Withdrawn EP0132432A1 (fr) 1982-12-24 1983-12-22 Appareil de chauffage

Country Status (1)

Country Link
EP (1) EP0132432A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100896681B1 (ko) * 2001-12-18 2009-05-14 삼성전자주식회사 컴팩트 디스크에 데이터를 기록하는 방법 및 그 장치

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8402571A2 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100896681B1 (ko) * 2001-12-18 2009-05-14 삼성전자주식회사 컴팩트 디스크에 데이터를 기록하는 방법 및 그 장치

Also Published As

Publication number Publication date
WO1984002571A3 (fr) 1984-08-02
WO1984002571A2 (fr) 1984-07-05

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE DE FR NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19841127

RIN1 Information on inventor provided before grant (corrected)

Inventor name: JONES, CEDRIC, RICHARD