EP0616673A1 - A gas treatment installation. - Google Patents
A gas treatment installation.Info
- Publication number
- EP0616673A1 EP0616673A1 EP93911644A EP93911644A EP0616673A1 EP 0616673 A1 EP0616673 A1 EP 0616673A1 EP 93911644 A EP93911644 A EP 93911644A EP 93911644 A EP93911644 A EP 93911644A EP 0616673 A1 EP0616673 A1 EP 0616673A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bed
- heaters
- air
- combustion
- gas treatment
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
- F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
- F23G7/066—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator
- F23G7/068—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator using regenerative heat recovery means
Definitions
- the dimensions of the electric heating system in an electrically heated combustion exchanger generally are chosen to ensure that the installation can be operated at full air flow and maintain the operational temperature, also when the air temporarily contains no pollutants that generate energy. In other words, the installation should be able to function also with clean air.
- One consequence of this is that the electric connections must be dimensioned for considerable power requirements.
- it is costly to have to provide for considerable power for the electric heaters with consequential large connected power which means considerable costs, although the equipment perhaps is in use only very unfrequently.
- the use of equipment designed to supply extra fuel to the strem of air to be cleaned may, under these circumstances, result in cost savings, since it becomes possible to reduce the electric power connections. This is prior-art technology and is used in many cases in conjunction with conventional combustion exchangers.
- the electric heaters are positioned in the hottest zone of the bed.
- the tem ⁇ perature is high in this zone (about 1000°C), with con- sequential high demands on the corrosive resistance of the materials of which the heaters are made. This is true whether the heat is supplied by electricity, by the pollutants or by the fuel added to the flow.
- the problem is identical when using other types of heaters than electric heaters.
- a combustion exchanger may be arranged in such a manner that any heaters incorporated therein are spared long-term presence in high temperatures.
- Fig. 1 One embodiment of the invention is illustrated in Fig. 1.
- the incoming air to be cleaned enters through a conduit 1 and is supplied to an air-direction changing apparatus 2 in which the air is alternatingly directed upwards to an air distribution space 3 and downwards to an air distribution space 4. From there, the air passes through a combustion bed 5 in which the chemical reaction takes place. Via the air distribution space 4, alter ⁇ natingly the air distribution space 3, the air then returns to the air-direction changing apparatus 2 and finally the cleaned air exits thorugh a conduit 6.
- the direction of the air is changed at regular intervals, in accordance with the principle described in the US Patent Specification referred to in the afore ⁇ going.
- heat losses are compensated for by the heat developed in the reaction process with the pollutants and/or with the fuels mixed with the air for this very purpose.
- a higher temperature is, however, required initially in order to initiate the chemical reactions.
- the necessary starting temperature in the bed is achieved by means of one or several heaters 7 which are positioned vertically out of center, i.e. displaced from the central part of the bed, and which preferably are located at the upper part of the bed.
- the heaters 7 are activated. They are used to heat a layer in the bed up to a starting temperature which need not be as high as the normal operational temperature. It is sufficient if the temperature level is such as to ensure that the mixture of pollutants/fuel and air starts to react during its passage through the layer and that the reaction progresses to a point where more heat is devel ⁇ oped inside the layer than is removed therefrom. The temperature inside the layer will therefore rise while the installation is in operation. When the correct start-up temperature level has been achieved by means of the heaters, the latter thus are stopped and by starting the supply of the air flow and the supply of pollutants/fuel, the temperature of the hottest layer will soon increase up to the normal operational temperature.
- the layer will lose more heat upwards than downwards. Consequently, the heat has a tendency to move downwards and eventually it will be centered in the bed.
- the air-directing mechanism By controlling the air-directing mechanism in such a manner that a larger volume of air passes downwards through the bed than upwards, this process may be accel ⁇ erated and become so rapid that the heaters, having starducy positions inside the bed, will never be exposed to the normal working temperature.
- the simplest way to achieve this is to allow the flow to pass upwards and downwards at intervals of mutually different lengths, but it is likewise possible to keep the interval times of equal length but instead vary the flow volumes per time unit.
- the heaters may be made from cheaper materials and that their serviceable life increases while at the same time they will need less servicing and maintenance.
- the heaters are positioned asymmetrically inside the bed in such a manner that they are closer to the upper face of the bed than to the lower one. This position facilitates servicing work on or replacement of the heaters, as it eliminates the need of removing large quantities of material to make the heaters accessible.
- they could of course also or instead have been positioned in the lower part of the bed. Further, a vertical flow of air through the bed has been assumed above.
- heaters in combustion exchangers are electric heaters.
- the principle of asymmetrically positioned heaters as defined in the subject invention is applicable also to other types of heaters, such as oil or gas fuelled heaters.
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Supply (AREA)
- Incineration Of Waste (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
- Gas Burners (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
Installation de traitement de gaz du type appelé échangeur de combustion. Elle comporte un lit de combustion générateur comprenant un ou plusieurs dispositifs de chauffage du lit. Lesdits dispositifs de chauffage permettent de déclencher la réaction chimique et sont décentrés par rapport au lit, c'est-à-dire qu'ils se trouvent en dehors de la partie centrale de celui-ci.Gas treatment plant of the type called combustion exchanger. It comprises a generating combustion bed comprising one or more bed heating devices. Said heating devices make it possible to trigger the chemical reaction and are off center with respect to the bed, that is to say they are located outside the central part of the latter.
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9103786A SE469293B (en) | 1991-12-19 | 1991-12-19 | GAS TREATMENT ESTABLISHMENT OF S K FURNITURE EXCHANGE TYPE |
SE9103786 | 1991-12-19 | ||
PCT/SE1992/000574 WO1993012381A1 (en) | 1991-12-19 | 1992-08-24 | A gas treatment installation |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0616673A1 true EP0616673A1 (en) | 1994-09-28 |
EP0616673B1 EP0616673B1 (en) | 1997-02-12 |
Family
ID=20384676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93911644A Expired - Lifetime EP0616673B1 (en) | 1991-12-19 | 1992-08-24 | A gas treatment installation |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0616673B1 (en) |
JP (1) | JP3217364B2 (en) |
AU (1) | AU2697392A (en) |
CA (1) | CA2123884A1 (en) |
DE (1) | DE69217503T2 (en) |
ES (1) | ES2097510T3 (en) |
SE (1) | SE469293B (en) |
WO (1) | WO1993012381A1 (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE441623B (en) * | 1984-06-21 | 1985-10-21 | Heed Bjoern | PROCEDURE AND DEVICE FOR COMBUSTION AND / OR DISTRIBUTION OF POLLUTANTS |
SE463940B (en) * | 1989-06-28 | 1991-02-11 | Adtec Ab | GAS PURIFICATION DEVICES TO DIRECTLY CHANGE PREVENTION TO PREVENT POLLUTION GAS EMISSIONS |
-
1991
- 1991-12-19 SE SE9103786A patent/SE469293B/en not_active IP Right Cessation
-
1992
- 1992-08-24 EP EP93911644A patent/EP0616673B1/en not_active Expired - Lifetime
- 1992-08-24 DE DE69217503T patent/DE69217503T2/en not_active Expired - Lifetime
- 1992-08-24 ES ES93911644T patent/ES2097510T3/en not_active Expired - Lifetime
- 1992-08-24 JP JP51082393A patent/JP3217364B2/en not_active Expired - Fee Related
- 1992-08-24 AU AU26973/92A patent/AU2697392A/en not_active Abandoned
- 1992-08-24 WO PCT/SE1992/000574 patent/WO1993012381A1/en active IP Right Grant
- 1992-08-24 CA CA 2123884 patent/CA2123884A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO9312381A1 * |
Also Published As
Publication number | Publication date |
---|---|
SE9103786L (en) | 1993-06-14 |
AU2697392A (en) | 1993-07-19 |
DE69217503D1 (en) | 1997-03-27 |
EP0616673B1 (en) | 1997-02-12 |
CA2123884A1 (en) | 1993-06-24 |
SE9103786D0 (en) | 1991-12-19 |
SE469293B (en) | 1993-06-14 |
JP3217364B2 (en) | 2001-10-09 |
ES2097510T3 (en) | 1997-04-01 |
JPH07502106A (en) | 1995-03-02 |
DE69217503T2 (en) | 1997-07-03 |
WO1993012381A1 (en) | 1993-06-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
RU2115688C1 (en) | Plant for thermal decomposition of waste and method of operating this plant | |
US6694926B2 (en) | Water heater with continuously variable air and fuel input | |
EP0138319B1 (en) | Gas-fired water heater | |
US5375999A (en) | Catalyst combustor | |
CA2130962C (en) | Water heater with reduced localized overheating | |
GB1427231A (en) | Diminishing gaseous pollutants in combustion flue gas | |
US4126419A (en) | Combustion device for burning waste gases containing combustible and noxious matters | |
CA2088018C (en) | Direct contact water heater with hybrid heat source | |
US4267152A (en) | Anti-pollution thermal regeneration apparatus | |
US5186901A (en) | Regenerative bed incinerator system | |
KR100453794B1 (en) | Device and method for recombining hydrogen and oxygen in a gaseous mixture | |
US5538693A (en) | Varying switching temperature set-point method for bed flow reversal for regenerative incinerator systems | |
EP0616673A1 (en) | A gas treatment installation. | |
KR100392702B1 (en) | Hot air generator using catalytic combustion | |
EP1269075B1 (en) | Regenerative thermal oxidizer and process for combusting gas | |
CA2031367C (en) | Regenerative bed incinerator system with gas doping | |
US2525400A (en) | Air heater with solid fuel and fluid fuel burning furnaces arranged in tandem | |
US4880157A (en) | Capacity control for integrated furnace | |
KR0148590B1 (en) | A combustion method and device of heat exchange type furnace | |
US2973033A (en) | Fluid burning heaters | |
US5820362A (en) | Fluid control | |
JP4901054B2 (en) | Overpressure combustor for burning lean concentration of combustible gas | |
SU1606811A1 (en) | Installation for afterburning of outgoing gases | |
JPH06288510A (en) | Catalyst combustion type boiler system | |
RU2269060C2 (en) | Plant for burning low-concentration combustible gas at pressure above atmospheric |
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 |
|
17P | Request for examination filed |
Effective date: 19940507 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES FR GB IT NL SE |
|
17Q | First examination report despatched |
Effective date: 19950831 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
ITF | It: translation for a ep patent filed |
Owner name: STUDIO GLP S.R.L. |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE ES FR GB IT NL SE |
|
REF | Corresponds to: |
Ref document number: 69217503 Country of ref document: DE Date of ref document: 19970327 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2097510 Country of ref document: ES Kind code of ref document: T3 |
|
ET | Fr: translation filed | ||
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 | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20010803 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20010829 Year of fee payment: 10 Ref country code: ES Payment date: 20010829 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20010831 Year of fee payment: 10 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020824 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020825 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030301 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20020824 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030430 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20030301 |
|
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: 20030912 |
|
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: 20050824 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20110803 Year of fee payment: 20 Ref country code: SE Payment date: 20110817 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 69217503 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 69217503 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20120825 |