EP0275859B1 - Druckgasvorwärmer - Google Patents

Druckgasvorwärmer Download PDF

Info

Publication number
EP0275859B1
EP0275859B1 EP87870201A EP87870201A EP0275859B1 EP 0275859 B1 EP0275859 B1 EP 0275859B1 EP 87870201 A EP87870201 A EP 87870201A EP 87870201 A EP87870201 A EP 87870201A EP 0275859 B1 EP0275859 B1 EP 0275859B1
Authority
EP
European Patent Office
Prior art keywords
gas
hand
gases
heated
combustion air
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.)
Expired - Lifetime
Application number
EP87870201A
Other languages
English (en)
French (fr)
Other versions
EP0275859A1 (de
Inventor
Jacques Ribesse
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.)
Distrigaz SA
Original Assignee
Distrigaz SA
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 Distrigaz SA filed Critical Distrigaz SA
Priority to AT87870201T priority Critical patent/ATE64156T1/de
Publication of EP0275859A1 publication Critical patent/EP0275859A1/de
Application granted granted Critical
Publication of EP0275859B1 publication Critical patent/EP0275859B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0033—Heating elements or systems using burners
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B9/00—Stoves for heating the blast in blast furnaces
    • C21B9/10—Other details, e.g. blast mains
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/26—Arrangements of heat-exchange apparatus
    • 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
    • F28D17/00—Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles

Definitions

  • the present invention relates to a device for heating various gaseous fluids such as air, steam, oxygen, reducing gases, blast furnace gas, etc., to very high temperatures, for example 1400-1500 ° C., under pressure up to 40 bar and continuous supply.
  • gaseous fluids such as air, steam, oxygen, reducing gases, blast furnace gas, etc.
  • This process is based on the principle of the regenerative exchange of gases by alternating and periodic passage of the gases from the heating phase and the gases to be heated (combustion products from associated burners) over a thermal mass, with a short periodicity.
  • the device does not have valves operating at high temperature and provides a continuous flow of hot gas.
  • the apparatus comprises a vertical reactor (1) whose walls are internally lined with refractory and insulating materials (2) and containing thermal masses (3), for example spheres in alumina or other suitable forms and materials which transfer heat.
  • the reactor is equipped with burners (10) (10 ′) placed on either side of the middle zone.
  • a hot gas collection pipe (15) connected to the insulated pipe (6) continuously supplying hot gas under pressure.
  • Sealed valves (5) (5 ′) (9) (9 ′) (12) (12 ′) (13) (13 ′) allow gas flows at low temperature to be directed or extracted from one or more other of the cold ends of the reactor; they are controlled by a periodic sequence device.
  • regulation and measurement devices control the various flows of gas _ gas to be heated, air and combustible gas, combustion gas _ according to a procedure forming part of the invention.
  • the heater object of the invention consisting of a single enclosure, comprises means for putting under identical pressure, on the one hand the gas to be heated and on the other on the one hand, the combustion area, means for controlling on the one hand the flow of the gas to be heated and the flow of combustion air, and on the other hand the flow of the burnt gases so as to avoid pollution of the gas to be heated by the burnt gases without using sealing means; in an advantageous mode, the heater is also provided with means for purging the enclosure of residual combustion gases at the time of the reversals, with means for overpressuring the combustion air; in the event of operation under pressure greater than 2 bars, the heater can advantageously be provided with means for expansion of the burnt gases making it possible to recover the energy.
  • the system therefore operates under pressure as follows:
  • the gas to be heated under pressure (4), at a controlled flow rate, is directed towards one of the ends of the enclosure (1), for example by opening the valve (5 ′), it passes through the thermal mass (3) where it gradually heats up by taking the heat from this mass.
  • the hot gas is collected in the peripheral manifold (15) and is transferred to the hot gas pipe (6) and to use.
  • the combustion gases leave the enclosure (1) by means of the open valve (13) and are directed towards the chimney via a flow control means and an expansion turbine (14).
  • the upper and lower parts of the enclosure (1) are in direct communication with the central part, without separation of the heating and combustion phases by hot valves.
  • there is no mixture of heated gas coming from one side of the enclosure with combustion gas coming from the other side thanks to the fact that the flow of burnt gases extracted from the enclosure is controlled. towards the chimney so that the quantity corresponds to that which results from the combustion of gas and air from the burners.
  • the circuits are reversed: the gas to be heated is directed to the other end of the enclosure (1) by opening the valve (5) and closing the valve (5 ′ ); likewise, combustion is started with the burners (10 ′) located in the upper middle part of the enclosure by opening (9 ′) and (12 ′) and closing (9) and (12). In addition, the combustion gases are evacuated from the upper side enclosure by opening (13 ′) and closing (13). It is a cyclic system with continuous production of hot gases.
  • the internal volume on one side of the enclosure is filled with combustion gases which must be purged to avoid sending this gas, on inversion, to the manifold. hot gas.
  • injecting is carried out for a very short time, for example 0.5 to 5 seconds depending on the pressure level, and by a conduit and a valve connected to the burners (10) (10 ′) a certain amount of cold gas to be heated.
  • This purge gas thus eliminates, before inversion of the system, the residual burnt gases. In the case of air heating, this procedure is simplified by purging with combustion air, closed burner gas (12 ′) or (12).
  • the volume of gas to be heated contained in the upper (or lower) part of the enclosure can be recovered at the time of the inversion by sending it, for a few seconds, to a reservoir (16) at localized reduced pressure. in the chimney circuit before opening the valve (13 ′) or (13) after the burners start, this in the case where the gas to be heated has a high economic value, for example hydrogen or reducing gas.
  • the central part of the enclosure is also provided with additional thermal masses placed between the burners, playing a role of temperature stabilization.
  • the device which is part of the family of regenerative systems, operates at constant pressure in the two zones of the enclosure, which improves the resistance to high thermal and dynamic stresses of these systems.
  • the pressurized gas reheating device which is the subject of the present invention has a short cycle operation (1 to 5 minutes), which greatly limits the volume of thermal masses and the cost of the system.
  • the purge devices are such that they prevent mixing of the gases to be heated and the combustion gases at the time of reversal.
  • the heater can heat all types of gas, including combustible or reactive gases (hydrogen, reducing gases, blast furnace gas, ...) at high temperatures inaccessible to conventional processes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermal Sciences (AREA)
  • Air Supply (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Lasers (AREA)

Claims (5)

1. Vorrichtung zum Erhitzen von Gasen auf erhöhte Temperatur, wobei man das heiße Gas unter Druck kontinuierlich mittels eines alternierenden Regenerationssystems einem senkrechten, vollständig mit Heizmassen versehenen Einzelgefäß zuführt, welche Mittel umfaßt, um einerseits das zu erhitzende Gas und andererseits die Verbrennungsluft unter den gleichen Druck zu setzen, sowie Mittel, um einerseits die Strömungsrate des zu erhitzenden Gases, die Strömungsrate der Verbrennungsluft und andererseits die Strömungsrate der abgezogenen verbrannten Gase zu regulieren.
2. Vorrichtung nach dem obigen Anspruch, dadurch gekennzeichnet, daß sie weiterhin ein System umfaßt, um den Reaktor zum Zeitpunkt der Umkehrung von Restgasen zu entleeren.
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß sie mit einer Turbine zum Entspannen der verbrannten Gase ausgestattet ist.
4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß sie mit Mitteln zur Regulierung des Abzugs der verbrannten Gase in Abhängigkeit von den Strömungsraten des Verbrennungsgases und der Verbrennungsluft ausgestattet ist.
5. Vorrichtung zum Erhitzen von Gasen nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß sie mit unter Druck arbeitenden und gegen starke thermische und mechanische Beanspruchung und Hitzestrahlung stabilen Brennern ausgestattet ist.
EP87870201A 1986-12-23 1987-12-22 Druckgasvorwärmer Expired - Lifetime EP0275859B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87870201T ATE64156T1 (de) 1986-12-23 1987-12-22 Druckgasvorwaermer.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE6048285 1986-12-23
BE6/48285A BE906041A (fr) 1986-12-23 1986-12-23 Rechauffeur de gaz sous pression.

Publications (2)

Publication Number Publication Date
EP0275859A1 EP0275859A1 (de) 1988-07-27
EP0275859B1 true EP0275859B1 (de) 1991-06-05

Family

ID=3875007

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87870201A Expired - Lifetime EP0275859B1 (de) 1986-12-23 1987-12-22 Druckgasvorwärmer

Country Status (5)

Country Link
EP (1) EP0275859B1 (de)
AT (1) ATE64156T1 (de)
BE (1) BE906041A (de)
ES (1) ES2023677B3 (de)
GR (1) GR3002653T3 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1006702A6 (fr) * 1993-02-10 1994-11-22 Distrigaz Sa Dispositif de rechauffage d'un fluide gazeux.
CA2196754A1 (en) * 1994-08-10 1996-02-22 Ryoichi Tanaka High-temperature gas generating apparatus
CA2173587C (en) * 1994-12-02 2001-03-13 Tsuguhiko Nakagawa Non-oxidizing heating method and apparatus therefor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2863644A (en) * 1955-12-05 1958-12-09 Fallon John Thomas Regenerative heat exchange apparatus
FR1255398A (fr) * 1960-01-25 1961-03-10 Savoie Electrodes Refract Perfectionnements aux cowpers
DE1812366A1 (de) * 1968-12-03 1970-06-18 Rheinlaender Dr Ing Paul Verfahren und Vorrichtung zum Verdichten und Erhitzen von Nutzgasen
GB1281782A (en) * 1970-02-25 1972-07-12 Kureha Chemical Ind Co Ltd Stationary regenerative heating apparatus
GB1288167A (de) * 1970-02-25 1972-09-06
DE2144663C2 (de) * 1970-09-09 1982-12-23 Centre de Recherches Métallurgiques-Centrum voor Research in de Metallurgie-Association sans but lucratif-Vereniging zonder winstoogmerk Vorrichtung zum Erhitzen eines Gases

Also Published As

Publication number Publication date
ATE64156T1 (de) 1991-06-15
BE906041A (fr) 1987-06-23
EP0275859A1 (de) 1988-07-27
GR3002653T3 (en) 1993-01-25
ES2023677B3 (es) 1992-02-01

Similar Documents

Publication Publication Date Title
CN102563857B (zh) 采用蓄热式加热炉加热瓦斯气的工艺及装置
EP2408938A1 (de) Verfahren zum rezirkulieren von hochofengas und zugehörige vorrichtung
US4628869A (en) Variable temperature waste heat recovery system
US20230243591A1 (en) Regenerators with pressurized cavity in partition walls
US4424857A (en) Method for reversing two regenerators
EP0275859B1 (de) Druckgasvorwärmer
US2631835A (en) Apparatus for heating gases
FR2496697A1 (fr) Procede d'exploitation d'un four a atmosphere controlee pour le traitement thermique continu de bobines de feuillard d'acier
JP2557030B2 (ja) 分解炉及び後段に設けられた分解ガス冷却器を熱デコーキングするための方法
FR2459824A1 (fr) Procede et installation de fabrication de coke ou semi-coke
KR102082061B1 (ko) 산화제 예열을 이용한 열화학적 재생
EP0564365B1 (de) Verfahren und Vorrichtung zur thermischen Behandlung von Abfällen, insbesondere festen Abfällen, welche organische Materialien enthalten
US5426259A (en) Method for oil-extracting treatment of wastes
EP0089329B1 (de) Verfahren und Vorrichtung zur Druckvergasung von Kohle
BE1006702A6 (fr) Dispositif de rechauffage d'un fluide gazeux.
JPH02151687A (ja) コークス乾式消火設備立上げ時の内張耐火物の昇温方法
SU252368A1 (ru) Устройство для получения жесткого
BE473474A (de)
BE1016102A3 (fr) Procede et dispositif de production de gaz reducteur destine, en particulier a la reduction de minerai.
CA2444779A1 (fr) Procede et installation de regeneration d'absorbants employes pour la captation du dioxyde de soufre dans des fumees de combustion
US2924577A (en) Production of controlled atmospheres and gas generator therefor
JPH09273742A (ja) 加熱炉燃料の蓄熱切替式水蒸気改質方法
BE454098A (de)
CA1191104A (en) Method and apparatus of emergency interruption for slurry heating furnace
US652076A (en) High-temperature smelting-furnace.

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

Kind code of ref document: A1

Designated state(s): AT CH DE ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19890109

17Q First examination report despatched

Effective date: 19900727

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE ES FR GB GR IT LI LU NL SE

REF Corresponds to:

Ref document number: 64156

Country of ref document: AT

Date of ref document: 19910615

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3770616

Country of ref document: DE

Date of ref document: 19910711

ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2023677

Country of ref document: ES

Kind code of ref document: B3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GR

Ref legal event code: FG4A

Free format text: 3002653

EPTA Lu: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 87870201.8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19951201

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 19951205

Year of fee payment: 9

Ref country code: FR

Payment date: 19951205

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19951208

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19951212

Year of fee payment: 9

Ref country code: ES

Payment date: 19951212

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19951213

Year of fee payment: 9

Ref country code: DE

Payment date: 19951213

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19951227

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19951230

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19961222

Ref country code: GB

Effective date: 19961222

Ref country code: AT

Effective date: 19961222

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19961223

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 19961223

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19961231

Ref country code: CH

Effective date: 19961231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19970630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19970701

REG Reference to a national code

Ref country code: GR

Ref legal event code: MM2A

Free format text: 3002653

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19961222

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19970829

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19970701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19970902

EUG Se: european patent has lapsed

Ref document number: 87870201.8

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20010301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051222