EP1108185A1 - Verfahren zur thermischen regeneration des wärmetauschermaterials einer regenerativen nachverbrennungsvorrichtung - Google Patents
Verfahren zur thermischen regeneration des wärmetauschermaterials einer regenerativen nachverbrennungsvorrichtungInfo
- Publication number
- EP1108185A1 EP1108185A1 EP00942004A EP00942004A EP1108185A1 EP 1108185 A1 EP1108185 A1 EP 1108185A1 EP 00942004 A EP00942004 A EP 00942004A EP 00942004 A EP00942004 A EP 00942004A EP 1108185 A1 EP1108185 A1 EP 1108185A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- exchanger material
- air
- segment
- combustion chamber
- 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
- 239000000463 material Substances 0.000 title claims abstract description 40
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 30
- 230000001172 regenerating effect Effects 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000008929 regeneration Effects 0.000 claims abstract description 14
- 238000011069 regeneration method Methods 0.000 claims abstract description 14
- 238000010926 purge Methods 0.000 claims description 9
- 239000012535 impurity Substances 0.000 claims description 8
- 239000000356 contaminant Substances 0.000 abstract description 9
- 239000007789 gas Substances 0.000 description 17
- 238000009826 distribution Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
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 invention relates to a method for the thermal regeneration of the heat exchanger material of a regenerative afterburning device, which comprises in a housing from top to bottom:
- Which method heats air in the combustion chamber, removes it, adjusts it to the desired regeneration air temperature with fresh air, and successively is passed through all segments of the heat exchanger material, whereby the heat exchanger material is brought to a temperature at which the impurities adsorbed on the heat exchanger material dissolve.
- Regenerative post-combustion devices are used to clean contaminated exhaust gases from industrial processes.
- the exhaust gases to be cleaned are passed through heat exchanger material. Since the exhaust gases to be cleaned often contain organic contaminants in the form of condensable substances, e.g. Tar products or organic dusts contain the surfaces of these heat exchanger materials with these contaminants during operation.
- the heat exchanger material must be periodically heated to a temperature at which the contaminants adsorbed on the surface can be dissolved and discharged. In the known thermal afterburning devices, this is done by introducing fresh air into the combustion chamber, heating it to high temperature there and then passing it down through the heat exchanger material, feeding it to the outlet via the rotary distributor and then disposing of it via the chimney into the outside atmosphere.
- Rotary distributor is in this process. It is waited until the respectively flushed segment of the heat exchanger material has heated up to the required temperature from top to bottom, so that all areas of the heat exchanger material in this segment are freed of impurities. Then the rotary distributor is rotated by one segment and the process begins again.
- a disadvantage of this known method for the regeneration of the heat exchanger material is, on the one hand, the relatively long time it takes to clean all segments. dig is. In addition, the gas supplied to the chimney contains the contaminants that have detached from the heat exchanger material and is therefore not clean.
- the object of the present invention is to design a method of the type mentioned at the outset in such a way that the thermal regeneration takes place quickly and, moreover, no impurities are released into the ambient atmosphere.
- the segment of the heat exchanger material which is acted upon is heated from below, that is to say from a side which is normally relatively cool since it is far away from the combustion chamber. In this way, uniform heating of the heat exchanger material in the segment can be achieved faster than if this segment were subjected to hot air from the combustion chamber.
- the air contains contaminants that have been released from the heat exchanger material entrained in the combustion chamber, where these contaminants are burned and thus rendered harmless. Only air that has been completely freed of impurities is released into the environment via the chimney.
- the regenerative afterburning device is identified in the drawing by the reference number 1. Unless otherwise stated below, their basic structure and mode of operation are described in EP 0 548 630 AI or EP 0 719 984 A2, to which express reference is made.
- Afterburning device 1 there is an inlet space 3 for the exhaust air to be cleaned, which is supplied via an inlet line 4.
- a heat exchange space 7 in the housing 2 which is divided into a corresponding number of segments, each of which communicates with a corresponding segment of the distribution space below.
- the segments of the heat exchange space 7 are filled with heat exchange material.
- a combustion chamber 8 in which a burner 9 opens.
- the rotary distributor 5 is designed in a known manner so that it connects a further segment of the distributor space 6, which is generally diametrically opposite the first-mentioned segment, and thus also a further segment of the heat exchanger space 7 with an outlet line 10 for cleaned gas. Finally, the rotary distributor 5 establishes a connection between that segment of the distribution chamber 6 and thus of the heat exchange chamber 7 with a purge air line 11, which, viewed in the direction of rotation of the rotary distributor 5, leads that segment which communicates with the outlet line 10.
- the outlet line 10 for cleaned gas leads via a motor-controlled valve 12 and a blower 13, a further motor-controlled valve 14 and a silencer 15 to a chimney 16.
- a return line 17 branches off, which via a further motor-controlled valve 18 is connected to the inlet line 4 for exhaust gas to be cleaned.
- the purge air line 11 already mentioned branches off from the return line 17 and contains a further motor-controlled valve 19.
- combustion chamber 8 is connected to the outlet line 10 for cleaned gases at a point between the motor-controlled valve 12 and the fan 13; this connection can be done with a motor open or close controlled valve 23. Between the motor-controlled valve 23 and the outlet into the outlet line 10, a fresh air supply line 24 opens into the line 22, which can also be blocked by a motor-controlled valve 25.
- the exhaust gas 4 to be cleaned is introduced via the inlet line 4 into the inlet chamber 3 of the regenerative afterburning device 1 and is passed on to a specific segment of the distribution chamber 6 in accordance with the respective rotational position of the rotary distributor 5.
- the exhaust air rises from this segment of the distribution space 6 into the overlying segment of the heat exchange space 7 and absorbs heat previously stored by the heat exchange material there.
- the exhaust gas heats up as it passes through the heat exchanger material until it has either reached the ignition temperature for the impurities contained in it or has come close to this ignition temperature when it emerges from the top of the heat exchange space 7.
- the burner 9 is used to burn the contaminants; in the first case the combustion takes place without the supply of external energy.
- the heated air which now contains the (non-hazardous) combustion products, enters a segment of the heat exchange space 7 from above and flows through it downwards. A large part of its heat is given off to the heat exchanger material there and enters the corresponding segment of the distribution chamber 6 on the underside of the heat exchange chamber 7, appropriately cooled is supplied from the rotary distributor 5 to the outlet line 10.
- the motor-controlled valves 12 and 14 are open and the motor-controlled valves 18, 23 and 25 are closed.
- the clean air is discharged into the outside atmosphere via the chimney 16 by means of the fan 13.
- the heat exchange material located in the heat exchange space 7 requires regeneration, since its surfaces have become clogged with substances, for example tar products or organic dusts, which are carried along by the exhaust gas to be cleaned.
- This thermal regeneration takes place in the regenerative afterburning device 1 described as follows:
- the supply of exhaust air to be cleaned via the inlet line 4 is switched off.
- the motor-controlled valves 12 and 19 are closed, whereas the motor-controlled controlled valves 14, 18, 21, 23 and 25 opened.
- hot air is removed from the combustion chamber 8.
- Fresh air is mixed in via the fresh air supply line 20 and the regeneration air temperature is thereby set.
- the mixed air is drawn in with the blower 13 via the line 22 and the open valve 23 and via the return line 17 and the open motor-controlled valve 18 into the inlet line 4 and from there via the inlet space 3, the rotary distributor 5, the corresponding segment of the distribution space 6 a segment of the heat exchange chamber 7 supplied.
- This air re-enters the combustion chamber 8 at the top and is heated by the burner 9.
- the hot air is circulated in the way described while the rotary distributor 5 continues to rotate. Excess air in the circuit is discharged through appropriate opening of the motor-controlled valve 14 to the chimney 16.
- the described air circulation is carried out with the rotary distributor 5 running until the heat exchanger material has reached the temperature in the lowest areas at which the deposits are removed from the heat exchanger material. These contaminants are then brought into the combustion chamber 8 by the circulating air and burned there. When this process is complete, the various motor-controlled valves are returned to the starting position and the supply of exhaust air to be cleaned is restarted via the inlet line 4.
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Supply (AREA)
- Incineration Of Waste (AREA)
- Braking Arrangements (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19926405A DE19926405C2 (de) | 1999-06-10 | 1999-06-10 | Verfahren zur thermischen Regeneration des Wärmetauschermaterials einer regenerativen Nachverbrennungsvorrichtung |
| DE19926405 | 1999-06-10 | ||
| PCT/EP2000/004954 WO2000077453A1 (de) | 1999-06-10 | 2000-05-31 | Verfahren zur thermischen regeneration des wärmetauschermaterials einer regenerativen nachverbrennungsvorrichtung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1108185A1 true EP1108185A1 (de) | 2001-06-20 |
| EP1108185B1 EP1108185B1 (de) | 2004-08-11 |
Family
ID=7910748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00942004A Expired - Lifetime EP1108185B1 (de) | 1999-06-10 | 2000-05-31 | Verfahren zur thermischen regeneration des wärmetauschermaterials einer regenerativen nachverbrennungsvorrichtung |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6622780B1 (de) |
| EP (1) | EP1108185B1 (de) |
| AT (1) | ATE273483T1 (de) |
| CZ (1) | CZ2001458A3 (de) |
| DE (2) | DE19926405C2 (de) |
| PL (1) | PL192690B1 (de) |
| WO (1) | WO2000077453A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7018447B2 (en) * | 2004-04-05 | 2006-03-28 | Dürr Systems, Inc. | Method of cleaning a rotary concentrator |
| US20060068094A1 (en) * | 2004-09-29 | 2006-03-30 | Cole David J | Production paint shop design |
| US11391458B2 (en) * | 2016-06-27 | 2022-07-19 | Combustion Systems Company, Inc. | Thermal oxidization systems and methods |
| US12405003B2 (en) | 2016-06-27 | 2025-09-02 | Emission Rx, Llc | Thermal oxidization systems and methods with greenhouse gas capture |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2362622C2 (de) * | 1973-12-17 | 1986-07-10 | Portlandzementwerk Dotternhausen Rudolf Rohrbach Kg, 7460 Balingen | Vorrichtung zur Entstaubung heißer Abgase |
| US5101741A (en) * | 1991-05-10 | 1992-04-07 | Jwp Air Technologies | Flow line bake-out process for incinerator |
| DE4142136C2 (de) * | 1991-12-20 | 1994-07-21 | Eisenmann Kg Maschbau | Vorrichtung zum Reiniguen schadstoffhaltiger Abluft aus Industrieanlagen durch regenerative Nachverbrennung |
| US5259757A (en) * | 1992-02-27 | 1993-11-09 | Smith Engineering Company | Method and apparatus for smokeless burnout of regenerative thermal oxidizer systems |
| US6183707B1 (en) * | 1992-06-08 | 2001-02-06 | Biothermica International Inc. | Incineration of waste gases containing contaminant aerosols |
| US5346393A (en) * | 1993-02-02 | 1994-09-13 | Smith Engineering Company | Multiple-bed thermal oxidizer control damper system |
| US5643539A (en) * | 1994-03-04 | 1997-07-01 | Salem Engelhard | Regenerative incineration system |
| EP0702195A3 (de) * | 1994-08-17 | 1997-05-14 | Grace W R & Co | Ringförmiger Luftverteiler für regenerative, thermische Oxidationanlagen |
| US5538420A (en) * | 1994-11-21 | 1996-07-23 | Durr Industries, Inc. | Heat exchanger bake out process |
| US5562442A (en) * | 1994-12-27 | 1996-10-08 | Eisenmann Corporation | Regenerative thermal oxidizer |
| AT402697B (de) * | 1995-08-17 | 1997-07-25 | Schedler Johannes | Verfahren zur thermischen abreinigung von regenerativen nachverbrennungsanlage ohne schastoffreisetzung und ohne unterbrechung des hauptgasstrommes |
| US5810581A (en) * | 1996-08-20 | 1998-09-22 | Smith Engineering Company | Pre-heating of process stream for thermal oxidizers |
| US6203316B1 (en) * | 1999-11-12 | 2001-03-20 | Regenerative Environmental Equipment Co., Inc. (Reeco, Inc.) | Continuous on-line smokeless bake-out process for a rotary oxidizer |
-
1999
- 1999-06-10 DE DE19926405A patent/DE19926405C2/de not_active Expired - Fee Related
-
2000
- 2000-05-13 US US09/762,760 patent/US6622780B1/en not_active Expired - Fee Related
- 2000-05-31 PL PL345861A patent/PL192690B1/pl unknown
- 2000-05-31 AT AT00942004T patent/ATE273483T1/de not_active IP Right Cessation
- 2000-05-31 CZ CZ2001458A patent/CZ2001458A3/cs unknown
- 2000-05-31 WO PCT/EP2000/004954 patent/WO2000077453A1/de not_active Ceased
- 2000-05-31 DE DE50007369T patent/DE50007369D1/de not_active Expired - Lifetime
- 2000-05-31 EP EP00942004A patent/EP1108185B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0077453A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1108185B1 (de) | 2004-08-11 |
| US6622780B1 (en) | 2003-09-23 |
| PL345861A1 (en) | 2002-01-14 |
| PL192690B1 (pl) | 2006-11-30 |
| DE50007369D1 (de) | 2004-09-16 |
| ATE273483T1 (de) | 2004-08-15 |
| DE19926405C2 (de) | 2001-04-26 |
| WO2000077453A1 (de) | 2000-12-21 |
| DE19926405A1 (de) | 2000-12-21 |
| CZ2001458A3 (cs) | 2002-05-15 |
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