WO1995003512A1 - Afterburning process and afterburner with energy recovery - Google Patents
Afterburning process and afterburner with energy recovery Download PDFInfo
- Publication number
- WO1995003512A1 WO1995003512A1 PCT/EP1994/002168 EP9402168W WO9503512A1 WO 1995003512 A1 WO1995003512 A1 WO 1995003512A1 EP 9402168 W EP9402168 W EP 9402168W WO 9503512 A1 WO9503512 A1 WO 9503512A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- reaction chamber
- stream
- combustion
- heat exchanger
- dust
- Prior art date
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
Definitions
- the invention relates to a post-combustion system with energy recovery, comprising a thermal reaction chamber into which a dust stream, combustion air and an additional fuel formed from processed production residues are introduced, a heat exchanger arrangement into which combustion gas from the reaction chamber is introduced, and a downstream filter and a chimney.
- the invention also relates to a method for the afterburning of production gases.
- Furnace systems are known in which, in addition to the fuel gas stream normally supplied, coal dust is also fed to the burner. If the fuel gas flow and dust and the other devices are coordinated with one another, such systems work satisfactorily from a technical point of view. However, the use of coal dust in such a plant is uneconomical because of the high production costs.
- Firing systems are also known in which several different gas flows are conducted into a boiler room.
- the individual components of the supplied gases must be coordinated with the burner in order to achieve acceptable results in the combustion.
- the principle of the invention is based on the fact that, starting from a combustion system which is operated with a fuel gas stream, two additional gas streams are introduced into the combustion chamber.
- the one gas stream is an exhaust gas stream from a production plant, in particular the odor-laden exhaust gas stream which is produced in the manufacture of carpets, while the second stream is produced as dust in the treatment of carpet remnants.
- the carpeting residual stream is formed from the production waste and, with regard to the calorific value, contains less than 25% of the calorific value of the other two streams taken together.
- the heat generated by the combustion can be used as process heat, whereby two urgent problems are solved at the same time:
- the odor-laden exhaust gas stream is used as an energy source. So far, this exhaust gas flow has been released directly into the environment via a relatively high chimney.
- the exhaust gas stream is brought to a higher temperature via a heat exchanger, which receives its heat directly from the boiler. The exhaust gas stream is then introduced into the boiler at a higher temperature and burned together with the actual fuel gas stream.
- the device according to the invention can be used for any production in which a gas stream, in particular an odor-laden gas stream, is produced in addition to a residual product stream with a known composition.
- a gas stream in particular an odor-laden gas stream
- both streams, the exhaust gas stream and also the product stream are not only combustible, but they also contain a sufficient amount of energy for combustion.
- the figure shows a post-combustion system with energy recovery, additional technical information having been included in the figure in order to represent the actual operating conditions using an embodiment.
- a thermal reaction chamber or swirl combustion chamber into which a dust stream 11 is introduced.
- This can be, for example, a stream of prepared production residues from the manufacture of carpets or carpeting.
- the carpet pieces obtained are ground, granulated and introduced into the swirl combustion chamber 10 as a dust stream 11 via a silo container and a metering system.
- This can be of the order of 100 kg / h.
- a supply of combustion air for the dust firing is referred to, it is about a flow of about 1000 Nm 3 / h.
- the supply of fuel for example natural gas, has been designated with 13, this is for example a flow of 210-240 m 3 / h.
- the gas stream leaving the thermal reaction chamber passes through a heat exchanger or thermal oil waste heat boiler 14 and arrives at a heat exchanger 16. From there, the gas stream is led to a chimney 18 via a cyclone / bag filter 17 and a suction fan. For example, chalk can be removed from the bag filter 17.
- a raw gas stream 20 is additionally introduced into the working circuit, which can originate, for example, from a coating system antechamber. However, it can also just as well be a gas stream which is odor-laden in some way and which arises at a low temperature.
- the temperature of the raw gas stream 20 is raised in an additional air preheater (LUVO) or heat exchanger 15 and leaves the heat exchanger 15, for example, as a gas stream with a volume of 16000 Nm 3 / h at a temperature of about 260 ° C.
- This gas stream is additionally introduced into the swirl combustion chamber 10, executes a swirl movement there and finally takes the path of the combustion gases to the chimney 18.
- the size of the incineration plant is the basis of the heavily loaded raw gas flow (exhaust air), of the coating plant antechamber (pre-dryer) as the primary combustion carrier with the special firing of natural gas and the secondary firing carried out in parallel - carpeted floor dust.
- the oxidation temperature of both fuel loads is 720 + 750 ° C, with a residence time of 0.75 seconds.
- the clean gas volume flow is conducted for energy recovery through a downstream waste heat boiler system, which, depending on the specific energy requirements of the system operator, can be thermal oil boilers, W.W. systems or other systems.
- An intermediate LUVO system heats the primary combustion medium - laden exhaust air - via the pure gas flow, so that it, preheated to approx. 260 ° C., is introduced into the thermal reaction chamber.
- a temperature increase of approx. 460/490 ° C. has to be achieved energetically in the reaction chamber by the primary and secondary firing, so that a considerable energy saving is the result.
- a multi-stage cyclone system is installed at the end of the system, which is used for chalk separation.
- the chalk is released during the burning process of carpet dust and can be used for other purposes.
- the clean gas volume flow is led into the chimney and thus released into the atmosphere.
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Incineration Of Waste (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94922873A EP0668981A1 (en) | 1993-07-21 | 1994-07-02 | Afterburning process and afterburner with energy recovery |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEG9310892.3U | 1993-07-21 | ||
DE9310892U DE9310892U1 (en) | 1993-07-21 | 1993-07-21 | Afterburning plant with energy recovery |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995003512A1 true WO1995003512A1 (en) | 1995-02-02 |
Family
ID=6895860
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1994/002168 WO1995003512A1 (en) | 1993-07-21 | 1994-07-02 | Afterburning process and afterburner with energy recovery |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0668981A1 (en) |
DE (1) | DE9310892U1 (en) |
WO (1) | WO1995003512A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2404173A1 (en) * | 1977-09-27 | 1979-04-20 | Rhone Poulenc Ind | Two section burner for consuming industrial waste gases - has combustion air admitted through holes in first section and through annulus prior to second, and has vortex inducer in first section |
DE2825596A1 (en) * | 1978-06-10 | 1979-12-20 | Otto & Co Gmbh Dr C | Combustion of ammoniacal gas mixtures contg. little or no oxygen - includes heating mixt. to thermally decompose ammonia before burning |
EP0205841A1 (en) * | 1985-05-04 | 1986-12-30 | VEBA OEL Entwicklungs-Gesellschaft mbH | Mobile thermal after-burning installation for a combustible waste gas mixture |
-
1993
- 1993-07-21 DE DE9310892U patent/DE9310892U1/en not_active Expired - Lifetime
-
1994
- 1994-07-02 WO PCT/EP1994/002168 patent/WO1995003512A1/en not_active Application Discontinuation
- 1994-07-02 EP EP94922873A patent/EP0668981A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2404173A1 (en) * | 1977-09-27 | 1979-04-20 | Rhone Poulenc Ind | Two section burner for consuming industrial waste gases - has combustion air admitted through holes in first section and through annulus prior to second, and has vortex inducer in first section |
DE2825596A1 (en) * | 1978-06-10 | 1979-12-20 | Otto & Co Gmbh Dr C | Combustion of ammoniacal gas mixtures contg. little or no oxygen - includes heating mixt. to thermally decompose ammonia before burning |
EP0205841A1 (en) * | 1985-05-04 | 1986-12-30 | VEBA OEL Entwicklungs-Gesellschaft mbH | Mobile thermal after-burning installation for a combustible waste gas mixture |
Non-Patent Citations (1)
Title |
---|
W.HÜNING: "BESEITIGUNG VON BRENNBAREN STOFFEN AUS DER ABLUFT DURCH THERMISCHE OXYDATION IN EINER DRALLBRENNKAMMER", BRENNST-WÄRME-KRAFT, vol. 31, no. 10, 1 October 1979 (1979-10-01), pages 391 - 395 * |
Also Published As
Publication number | Publication date |
---|---|
EP0668981A1 (en) | 1995-08-30 |
DE9310892U1 (en) | 1993-10-14 |
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