WO2002023088A1 - Verfahren zur regenerierung von schwefelhaltigem reststoff und zur durchführung des verfahrens geeigneter zerstäubungsbrenner - Google Patents
Verfahren zur regenerierung von schwefelhaltigem reststoff und zur durchführung des verfahrens geeigneter zerstäubungsbrenner Download PDFInfo
- Publication number
- WO2002023088A1 WO2002023088A1 PCT/EP2001/010346 EP0110346W WO0223088A1 WO 2002023088 A1 WO2002023088 A1 WO 2002023088A1 EP 0110346 W EP0110346 W EP 0110346W WO 0223088 A1 WO0223088 A1 WO 0223088A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- nozzle
- oxygen
- reaction zone
- fuel
- residue
- Prior art date
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Classifications
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/48—Sulfur dioxide; Sulfurous acid
- C01B17/50—Preparation of sulfur dioxide
- C01B17/58—Recovery of sulfur dioxide from acid tar or the like or from any waste sulfuric acid
- C01B17/585—Recovery of sulfur dioxide from acid tar or the like or from any waste sulfuric acid from ammonium sulfate containing sulfuric acid solutions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2212/00—Burner material specifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2214/00—Cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/00006—Liquid fuel burners using pure oxygen or O2-enriched air as oxidant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/00018—Means for protecting parts of the burner, e.g. ceramic lining outside of the flame tube
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2202/00—Combustion
- F23G2202/10—Combustion in two or more stages
- F23G2202/101—Combustion in two or more stages with controlled oxidant supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2202/00—Combustion
- F23G2202/10—Combustion in two or more stages
- F23G2202/102—Combustion in two or more stages with supplementary heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/10—Liquid waste
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/12—Sludge, slurries or mixtures of liquids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2900/00—Special features of, or arrangements for incinerators
- F23G2900/54402—Injecting fluid waste into incinerator
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
-
- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Definitions
- the present invention relates to a method for the regeneration of sulfur-containing residue by introducing a drop stream containing the residue into a reactor and feeding it to a reaction zone of hot flue gases, which are generated by burning a fuel, and heating it therein, so that sulfur-containing compounds of the residue are thermally heated to be split.
- the invention relates to an atomizing burner for carrying out the method, comprising a central inner nozzle for the supply of sulfur-containing residue, which is surrounded by an outer nozzle
- sulfur-containing residues e.g. used sulfuric acids (so-called “waste sulfuric acids”), ammonium sulfate solutions
- the residues are fed to a heating zone of a refractory-lined reactor produced by hot flue gases, hereinafter also referred to as "cracking furnace", and thermally therein with the formation of sulfur dioxide split.
- the heating zone is created by burning a fuel with an oxygen-containing oxidizing agent.
- the process gases containing sulfur dioxide are further processed according to the prior art to sulfuric acid, oleum or sulfur dioxide.
- reactors Two different types of reactors are used, which differ primarily in the process gas flow; namely vertically or horizontally flowed cracking furnaces.
- burners for generating the hot flue gases are flanged directly to the furnace wall in one or more planes radially or tangentially.
- the flame only develops in the cracking furnace, which means that CO and soot can be formed if combustion is incomplete and there is a risk of browning of the sulfuric acid produced.
- slitting systems of a newer type are used instead of the directly flanged burners upstream combustors called combustors.
- Combustors generate an approximately 2000 ° C, fully reacted flue gas.
- one or more burners or combustors are usually flanged directly to the front wall.
- the flame or flue gas emerges horizontally.
- Fuel gases and liquid fuels preferably with a high sulfur content, such as e.g. Heating oil S in question. If it is necessary to increase sulfuric acid production, liquid sulfur is also added as fuel, which burns directly in the cracking furnace to produce sulfur dioxide. Air is usually used as the oxidation medium, which is added to the burner cabinet either at ambient temperature or recuperatively heated.
- Acid is introduced into the cracking furnace by pressure atomizers, compressed air atomizers or rotary atomizers, which are made of acid-resistant materials.
- the inert nitrogen component must also be heated to the gap temperature of approx. 1000 ° C, which leads to an additional increase in energy consumption and a reduction in the sulfur dioxide concentration, as well as an increase in the process gas volume.
- the specific disposal costs per ton of waste acid can be reduced by increasing the sulfur dioxide concentration in the process gas.
- Higher sulfur dioxide concentrations can be achieved either by concentrating the sulfur-containing residues in a separate system or by reducing the inert nitrogen content in the combustion air, which is usually achieved by using oxygen as the oxidation medium.
- oxygen as the oxidation medium.
- Oxygen enrichment and / or oxygen injection increases the flame temperature, which can damage the burners and / or the refractory lining.
- a fuel / oxygen burner fuels such as oil or fuel gas are burned with oxygen using a suitable burner and mixed with oxygen.
- the oxygen burners can also be integrated in the reactor instead of air burners.
- the very high flame temperatures of up to 2900 ° C give rise to the same problems as with the previously mentioned processes.
- water-cooled oxygen burners are maintenance-intensive because corrosion damage can occur on the cooled surface due to the condensation of sulfuric acid.
- the invention is therefore based on the object of specifying a process for the regeneration of sulfur-containing residues in which oxygen can be introduced into the cracking furnace without the above disadvantages and limitations as an additional oxidation medium for increasing the performance and improving the economy. Furthermore, the invention is based on the object of specifying an atomizing burner which is suitable for carrying out the method and has a long service life.
- this object is achieved according to the invention, starting from the methods mentioned at the outset, in that a fuel-containing drop stream is introduced into the reactor at the same time as the residue-containing drop stream and is fed to a pre-reaction zone which is generated by introducing an oxygen-rich gas stream, where the residue in the pre-reaction zone is partially thermally split and then fed to the reaction zone.
- the droplet stream containing residual material and the droplet stream containing fuel are fed to a pre-reaction zone. This is generated by the residual substance and fuel reacting in finely divided form with the oxygen-rich gas.
- the sulfur-containing residue is partially split in the pre-reaction zone and then introduced into the higher temperature reaction zone consisting of the hot flue gases, in which the sulfur-containing residue is completely thermally split.
- the pre-reaction zone is decoupled from the actual reaction zone.
- the pre-reaction zone is created by burning fuel with the oxygen-rich gas stream.
- the fuels for forming the pre-reaction zone and the actual reaction zone can be identical.
- the oxygen-rich gas stream is pure oxygen or an oxygen / air mixture with an oxygen concentration between 25 vol.% And 100 vol.%.
- the thermal cleavage of the residue in the actual reaction zone can take place at low reaction temperatures, which results in low nitrogen oxide formation at high reaction rates in the overall process.
- the reaction products from the pre-reaction zone which have not yet been completely split are transferred to the actual reaction zone at a higher temperature, in which the reaction products are completely split and combusted without additional nitrogen oxides being formed.
- the temperature in the pre-reaction zone can be regulated by separately adjusting the flow of sulfur-containing residues, fuel and oxygen-rich gas. These are set independently of one another such that the temperature in the pre-reaction zone is within the preferred temperature ranges mentioned.
- a reducing atmosphere is preferably maintained in the first reaction zone in that the oxygen content in the pre-reaction zone is adjusted substoichiometrically with respect to oxidizable components of the residue and the fuel.
- An atomization medium is understood here to mean the media supplied to the atomizer, which directly or indirectly participate in the atomization of residual material and fuel. In particular, this also includes media that are supplied to the atomizer with the aim of enveloping the atomizing cone that forms during atomization. Pressure atomizers, rotary atomizers or injector atomizers are used as atomizers.
- a residue / fuel mixture is expediently introduced into the reactor in the form of a residue / fuel drop stream.
- a residue / fuel mixture is generated outside the reactor.
- This is fed to an atomizer to form the residue / fuel drop stream and is introduced into the pre-reaction zone by means of this.
- the oxygen-rich gas stream is fed to the pre-reaction zone together with this mixture or separately.
- the oxygen-rich gas stream envelops the residual material / fuel drop stream as an envelope gas stream and penetrates it, forming the first reaction zone.
- the enveloping gas stream in this sense is wholly or partly formed by the oxygen-rich gas stream or a part thereof.
- the enveloping gas stream is expediently also used in whole or in part as a secondary atomizing medium for the residue / fuel mixture.
- An embodiment of the method according to the invention in which the envelope gas stream is partially formed by an air stream has proven particularly useful, the oxygen content in the envelope gas stream being set between 25% by volume and 100% by volume.
- the oxygen content in the envelope gas stream is adjusted by the ratio of the flow volumes of the air stream and the oxygen-rich gas stream and its oxygen content.
- an atomizing burner for atomizing the residual material which has a central inner nozzle for the Has supply of the residue / fuel mixture, which is coaxially surrounded by a protective gas nozzle and an annular gap nozzle for the supply of the oxygen-rich envelope gas stream, wherein protective gas is passed through the protective gas nozzle.
- the inert gas introduced through the inert gas nozzle serves to shield the central inner nozzle from the oxygen-rich envelope gas stream.
- the inner nozzle can be made of a material that would be oxidized quickly if it came into contact with the oxygen-rich envelope gas stream at the prevailing high temperatures.
- the oxygen-rich gas stream comprises a preheated hot air stream and an oxygen-rich gas stream conducted separately therefrom.
- the oxygen content of the oxygen-rich gas stream is preferably at least 80% by volume.
- the object specified above is achieved according to the invention starting from the atomizing burner described at the outset in that between the inner nozzle and the
- a protective gas nozzle coaxially surrounding the inner nozzle is provided, and the inner nozzle is connected to an inlet for a residue / fuel mixture and the outer nozzle is connected to an inlet for an oxygen-rich gas stream.
- a protective gas nozzle is provided between the inner nozzle and the outer nozzle.
- the protective gas nozzle coaxially surrounds the inner nozzle. This makes it possible to introduce a protective gas through the protective gas nozzle, to which the inner nozzle is inert and which shields the inner nozzle from the environment from the outside. This in turn makes it possible to design the inner nozzle from a material which is resistant to the sulfur-containing residue but not stable to the medium emerging from the outer nozzle.
- the inner nozzle is connected to an inlet for a residue / fuel mixture and the outer nozzle is connected to an inlet for an oxygen-rich gas stream.
- the oxygen-rich gas stream in the sense of the present invention has an oxygen content between 25 vol.% and 100 vol.%.
- the atomizing burner according to the invention enables the residual material to be atomized while introducing the oxygen-rich gas stream or a part thereof through the outer nozzle, the inner nozzle being able to be shielded from the oxygen-rich gas stream by introducing a suitable protective gas through the protective gas nozzle. It is thus possible to design the inner nozzle from a material that is otherwise susceptible to corrosion under the ambient conditions.
- the inner nozzle is preferably made of zirconium.
- Zirconium is characterized by high acid resistance and wear resistance, but is quickly oxidized or even ignited at high temperatures (e.g. at 1000 ° C) due to its affinity in pure oxygen, which is avoided by the medium introduced through the protective gas nozzle.
- a further improvement of the atomizing burner results from the fact that swirl devices are provided in the outer nozzle.
- the swirl devices bring about an additional secondary atomization of the residue / fuel mixture.
- Atomizing burner in which the outer nozzle is designed as an annular gap which coaxially surrounds the protective gas nozzle.
- the outer nozzle is designed as an annular gap in which a large number of individual nozzles distributed around the outer circumference of the protective gas nozzle are arranged.
- the first gas can be preheated air and the second gas an oxygen-rich gas stream in the sense of this invention, with an oxygen content of preferably at least 80% by volume.
- FIG. 1 shows the atomizing burner according to the invention in a first
- FIG. 2 shows the atomizing burner according to FIG. 1 in a top view of the opening of the atomizing nozzle
- Figure 3 shows a second embodiment of the invention
- Atomizing burner with an outer nozzle with swirl device Atomizing burner with an outer nozzle with swirl device
- FIG. 4 shows the atomizing burner according to FIG. 3 in a top view of the opening of the atomizing nozzle
- Figure 5 shows a third embodiment of the invention
- Atomizing burner with an outer nozzle with individual nozzles arranged therein, and
- FIG. 6 shows the atomizing burner according to FIG. 5 in a top view of the opening of the atomizing nozzle.
- the atomization burner shown in FIG. 1 has a central inner nozzle 1, which is coaxially surrounded by an annular-shaped separation gas nozzle 2 and by another annular-shaped outer nozzle 3.
- the inner nozzle 1 has an inlet 4 for a mixture of sulfur-containing residue and fuel, such as light or heavy heating oil, waste oil or solvent, the separating gas nozzle 2 is provided with an air inlet 5, and the outer nozzle 3 with an inlet 6 for an oxygen / air Mixture whose oxygen content can be regulated between 20.6 vol.% And 100 vol.%.
- the inner nozzle is formed by a tube 8 made of zircon, which tapers conically in the direction of the nozzle opening 7.
- the other walls of the nozzles (2; 3) consist of heat-resistant, sulfur-resistant, high-alloy stainless steel in the form of two coaxial tubes (9; 10).
- the top view of the atomizing nozzle according to FIG. 2 shows the coaxial arrangement of the individual tubes (8; 9; 10) and the nozzles (1, 2, 3) of the atomizing burner according to FIG. 1.
- a swirl device in the form of lamellae 12 is provided in the lower region of the outer nozzle 3, just before the nozzle opening 7, which are set up obliquely in the flow direction 13 inside the outer nozzle 3.
- the top view of the atomizing nozzle according to FIG. 4 shows the coaxial arrangement of the individual tubes (8; 9; 10) and the nozzles (1, 2, 3) as well as the fins 12 within the outer nozzle 3 of the atomizing burner according to FIG. 3.
- FIG. 5 shows an embodiment of the invention
- Atomizing burner in which a multiplicity of individual nozzles 14 (in the exemplary embodiment there are eight individual nozzles 14) with a circular cross section run inside the annular-shaped outer nozzle 3.
- the individual nozzles 14 are evenly distributed around the separating gas nozzle 2. They are formed by pipes made of austenitic material, which are connected to an oxygen inlet 15 by their upper end facing away from the nozzle opening 7.
- the outer nozzle 3 is connected to an inlet 16 for hot air.
- This arrangement of the individual nozzles separates the oxygen from the preheated air up to the nozzle opening 7. It can be of any height Amounts of oxygen or air can be safely added to the furnace for safety reasons.
- the top view of the opening of the atomizing nozzle according to FIG. 6 shows the coaxial arrangement of the individual tubes (8; 9; 10) and the nozzles (1, 2, 3) and the arrangement of the circular individual nozzles 14 around the separating gas nozzle 2 in the atomizing burner Figure 5 can be seen.
- an existing splitting plant with a vertically flowed cracking furnace is used, in which the residues are sprayed onto the furnace head and the process gas flows through the cracking furnace from top to bottom.
- the cracking furnace is fired with two tangentially arranged combustors with heating oil S as fuel and preheated air as the oxidizing medium.
- the residue sprayed from above through the atomizer nozzle is thermally split in the hot flue gases generated by the combustors.
- Example 3 was the same composition of the residue as in Example 3.
- Example 1 the throughput of sulfur-containing residue increased by 33.3% from 12 m 3 / h to 16 m 3 / h.
- the amount of oxygen was 2000 m 3 / h.
- the energy required for the additional cleavage was fed to the sulfur-containing residue via the atomizing burner according to the invention, which is shown in FIGS. 1 and 2, by admixing 510 kg / h of heating oil S and introduced into the pre-reaction zone.
- the degree of splitting was slightly higher, as can be seen from the S ⁇ 3 values.
- a rise in temperature at the furnace head was not observed.
- the temperature at the cracking furnace exit was constant.
- the S ⁇ 2 concentration rose from 8.3 vol.% To 11.4 vol.% With an almost constant process gas volume flow.
- the nitrogen oxide concentration was somewhat lower relative to the S0 2 content. The results obtained are tabulated below.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Treating Waste Gases (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Gasification And Melting Of Waste (AREA)
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Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2002210493A AU2002210493A1 (en) | 2000-09-12 | 2001-09-07 | Method for regenerating a residual substance that contains sulfur, and an atomizing burner suited for carrying out said method |
AT01978351T ATE287513T1 (de) | 2000-09-12 | 2001-09-07 | Verfahren zur regenerierung von schwefelhaltigem reststoff und verwendung eines zerstäubungsbrenners zur durchführung des verfahrens |
EP01978351A EP1319151B1 (de) | 2000-09-12 | 2001-09-07 | Verfahren zur regenerierung von schwefelhaltigem reststoff und verwendung eines zerstäubungsbrenners zur durchführung des verfahrens |
DK01978351T DK1319151T3 (da) | 2000-09-12 | 2001-09-07 | Fremgangsmåde til regenerering af svovlholdigt reststof og anvendelse af en forstövningsbrænder til gennemförelse af fremgangsmåden |
CA002434343A CA2434343C (en) | 2000-09-12 | 2001-09-07 | Method for the regeneration of residues containing sulfur and an atomizing burner suited for executing the method |
US10/380,386 US7521035B1 (en) | 2000-09-12 | 2001-09-07 | Method for regenerating a residual substance that contains sulfur and an atomizing burner suited for carrying out said method |
DE50105141T DE50105141D1 (de) | 2000-09-12 | 2001-09-07 | Verfahren zur regenerierung von schwefelhaltigem reststoff und verwendung eines zerstäubungsbrenners zur durchführung des verfahrens |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10045320A DE10045320A1 (de) | 2000-09-12 | 2000-09-12 | Verfahren zur Regenerierung von schwefelhaltigem Reststoff und zur Durchführung des Verfahrens geeigneter Zerstäubungsbrenner |
DE10045320.1 | 2000-09-12 |
Publications (1)
Publication Number | Publication Date |
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WO2002023088A1 true WO2002023088A1 (de) | 2002-03-21 |
Family
ID=7656088
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/010346 WO2002023088A1 (de) | 2000-09-12 | 2001-09-07 | Verfahren zur regenerierung von schwefelhaltigem reststoff und zur durchführung des verfahrens geeigneter zerstäubungsbrenner |
Country Status (8)
Country | Link |
---|---|
US (1) | US7521035B1 (de) |
EP (1) | EP1319151B1 (de) |
AT (1) | ATE287513T1 (de) |
AU (1) | AU2002210493A1 (de) |
CA (1) | CA2434343C (de) |
DE (2) | DE10045320A1 (de) |
ES (1) | ES2236318T3 (de) |
WO (1) | WO2002023088A1 (de) |
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WO2022084032A1 (de) | 2020-10-23 | 2022-04-28 | Röhm Gmbh | Optimiertes verfahren zur herstellung von alkylmethacrylat durch reduzierung störender nebenprodukte |
WO2022084274A1 (de) | 2020-10-23 | 2022-04-28 | Röhm Gmbh | Optimiertes verfahren zur herstellung von methacrylsäure (mas) und/oder alkylmethacrylat durch reduzierung störender nebenprodukte |
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US7390189B2 (en) | 2004-08-16 | 2008-06-24 | Air Products And Chemicals, Inc. | Burner and method for combusting fuels |
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DE1258846B (de) * | 1964-01-02 | 1968-01-18 | Bayer Ag | Verfahren zur thermischen Spaltung von Abfallschwefelsaeuren |
DE2520584C3 (de) * | 1975-05-09 | 1980-03-06 | Eisenwerk-Gesellschaft Maximilianshuette Mbh, 8458 Sulzbach-Rosenberg | Verfahren und Vorrichtung zum Vergasen schwefelhaltiger Kohle in einem Eisenbadreaktor |
DE3629055A1 (de) * | 1986-08-27 | 1988-03-03 | Kloeckner Cra Tech | Verfahren zum gesteigerten energieeinbringen in elektrolichtbogenoefen |
-
2000
- 2000-09-12 DE DE10045320A patent/DE10045320A1/de not_active Ceased
-
2001
- 2001-09-07 WO PCT/EP2001/010346 patent/WO2002023088A1/de active IP Right Grant
- 2001-09-07 CA CA002434343A patent/CA2434343C/en not_active Expired - Fee Related
- 2001-09-07 AU AU2002210493A patent/AU2002210493A1/en not_active Abandoned
- 2001-09-07 US US10/380,386 patent/US7521035B1/en not_active Expired - Fee Related
- 2001-09-07 EP EP01978351A patent/EP1319151B1/de not_active Expired - Lifetime
- 2001-09-07 DE DE50105141T patent/DE50105141D1/de not_active Expired - Lifetime
- 2001-09-07 AT AT01978351T patent/ATE287513T1/de active
- 2001-09-07 ES ES01978351T patent/ES2236318T3/es not_active Expired - Lifetime
Patent Citations (8)
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US3661534A (en) * | 1970-06-15 | 1972-05-09 | Zink Co John | Apparatus for sulfur recovery |
US4102651A (en) * | 1972-10-14 | 1978-07-25 | Davy Powergas Gmbh | Ultrasonic atomizer for waste sulfuric acid and use thereof in acid cracking furnaces |
GB1527661A (en) * | 1975-02-15 | 1978-10-04 | Davy Powergas Gmbh | Process for thermally cracking waste sulphuric acid |
US4853206A (en) * | 1986-05-02 | 1989-08-01 | The Boc Group Plc | Treatment of waste material |
US5370771A (en) * | 1990-02-07 | 1994-12-06 | Chemrec Aktiebolag | Process for recovering energy and chemicals from spent liquor using low frequency sound |
EP0496101A1 (de) * | 1991-01-19 | 1992-07-29 | BASF Aktiengesellschaft | Verfahren zur thermischen Aufarbeitung ammoniumsulfathaltiger Rückstände insbesondere ammoniumsulfathaltiger Abwässer |
EP0509193A2 (de) * | 1991-04-18 | 1992-10-21 | Praxair Technology, Inc. | Brenneranlage für fliessfähige Abfallstoffe |
US5531169A (en) * | 1991-12-20 | 1996-07-02 | Imperial Chemical Industries Plc | Treatment of liquid waste material |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111118602A (zh) * | 2020-02-10 | 2020-05-08 | 沈阳工程学院 | 基于晶体在富氧气氛中生长的三管燃烧器 |
WO2022084032A1 (de) | 2020-10-23 | 2022-04-28 | Röhm Gmbh | Optimiertes verfahren zur herstellung von alkylmethacrylat durch reduzierung störender nebenprodukte |
WO2022084274A1 (de) | 2020-10-23 | 2022-04-28 | Röhm Gmbh | Optimiertes verfahren zur herstellung von methacrylsäure (mas) und/oder alkylmethacrylat durch reduzierung störender nebenprodukte |
Also Published As
Publication number | Publication date |
---|---|
US7521035B1 (en) | 2009-04-21 |
ES2236318T3 (es) | 2005-07-16 |
CA2434343C (en) | 2009-11-24 |
AU2002210493A1 (en) | 2002-03-26 |
CA2434343A1 (en) | 2002-03-21 |
DE50105141D1 (de) | 2005-02-24 |
DE10045320A1 (de) | 2002-03-28 |
EP1319151B1 (de) | 2005-01-19 |
ATE287513T1 (de) | 2005-02-15 |
EP1319151A1 (de) | 2003-06-18 |
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