WO1993016147A1 - Verfahren und einrichtung zum beheizen einer schweltrommel - Google Patents
Verfahren und einrichtung zum beheizen einer schweltrommel Download PDFInfo
- Publication number
- WO1993016147A1 WO1993016147A1 PCT/DE1993/000119 DE9300119W WO9316147A1 WO 1993016147 A1 WO1993016147 A1 WO 1993016147A1 DE 9300119 W DE9300119 W DE 9300119W WO 9316147 A1 WO9316147 A1 WO 9316147A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- heating gas
- gas
- carbonization
- heating
- combustion chamber
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B21/00—Heating of coke ovens with combustible gases
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B1/00—Retorts
- C10B1/10—Rotary retorts
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B47/00—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
- C10B47/28—Other processes
- C10B47/30—Other processes in rotary ovens or retorts
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
Definitions
- the invention relates to a method for heating a carbonization drum for generating a carbonization gas, wherein a heating gas guided in a heating gas circuit is used.
- the invention further relates to a device for carrying out the method and also to a smoldering and firing system operating according to this method.
- the charring of waste at a low temperature is an endothermic process.
- the heat required for the reaction is fed to the waste indirectly via heat exchanger heating surfaces which are arranged in the form of tubes in the wall of a rotating drum or smoldering drum.
- a heating gas is fed to the smoldering drum, which is conducted in a heating gas circuit.
- the heating gas circuit comprises a heat exchanger which is arranged on a combustion chamber of the firing plant and absorbs thermal energy from the hot flue gas there.
- the carbonization system is practically always operated together with the combustion system, the carbonization gas produced being burned in the combustion system to produce steam.
- a self-sufficient smoldering system is from the publication "Pyrolysis of waste” by Karl J. Thom ⁇ -Kozmiensky, EF-Verlag für Energy- undmaschinetechnik GmbH, 1985, pages 97 to 120, in particular Figure 2 on page 101 and text on page 103.
- the entire carbonization gas generated is converted into a clean gas in a gas converter with a downstream scrubber. Part of this clean gas is burned in a combustion chamber.
- the resulting flue gas is in a essentially open circuit and used as heating gas for the smoldering drum.
- this process is particularly complex and uneconomical, especially since a clean gas which is already economically usable is used for generating heating gas.
- the invention is therefore based on the object of specifying a method for heating a smoldering drum which is more economical than the prior art. This is to be achieved with a largely simplified device that ensures the provision of a heating gas required for the autonomous operation of the carbonization system.
- the stated object is achieved according to the invention in that the heating gas is generated by combustion of a partial stream of the carbonization gas.
- a controllable partial flow of the heating gas flowing out of the smoldering drum and thus cooled is returned in a closed part circle to the smoldering drum in an advantageous further development of the method and thereby mixed again with the hot heating gas.
- the partial flow of the carbonization gas is expediently carried out in the presence of negative pressure in the heating gas circuit. This measure serves on the one hand to promote the partial flow of the carbonization gas and the heating gas generated in the heating gas circuit. On the other hand, escape of carbonization gas or heating gas into the environment is avoided in the event of a leak.
- the partial flow of the carbonization gas is advantageously dedusted before the combustion. Nevertheless, there is the possibility that dust is deposited in the heating gas circuit, in particular in the carbonization drum, during operation of the carbonization system. The amount of dust that accumulates can be reduced of the partial stream of the carbonization gas to be burned are reduced. However, this leads to a reduction in the amount of heat introduced into the smoldering drum with the heating gas.
- an advantageous development of the method provides that the cooled heating gas flowing out of the carbonization drum is first preheated.
- the preheated heating gas is then fed back to the carbonization drum together with the burned partial stream of the carbonization gas.
- a partial flow of the heating gas flowing out of the smoldering drum is branched off from the heating gas circuit before or after preheating.
- the cooled heating gas is advantageously preheated by indirect heat exchange with steam.
- the cooled heating gas is expediently dedusted before preheating.
- the stated object is achieved according to the invention in that the combustion chamber generates a partial flow of the in the smoldering drum ⁇ th carbonization gas can be supplied.
- a device for dust separation preferably a cyclone, is expediently connected upstream of the combustion chamber.
- a suction fan is expediently provided, which is connected to the outflow line of the heating gas circuit.
- the pressure side of the suction fan can be connected to the combustion chamber. Additionally or alternatively, the pressure side of the suction fan can be connected to a mixing chamber downstream of the combustion chamber.
- a heat exchanger is provided for preheating the cooled heating gas, which is connected upstream of the combustion chamber in the heating gas circuit.
- a device for dust separation upstream of the heat exchanger can be arranged in the outflow line of the smoldering drum.
- a partial stream, preferably 20 to 50%, of the carbonization gas generated can be fed to a first combustion chamber for generating the heating gas for the carbonization drum.
- the residual stream of the carbonization gas generated can be fed to a second combustion chamber of the combustion system for steam generation.
- a heat exchanger connected upstream in the heating gas circuit of the first combustion chamber is generated in the combustion plant
- the cooled heating gas is preheated by indirect heat exchange with the steam.
- Carbonization gas for generating the heating gas required for the carbonization the carbonization system can be operated autonomously in a particularly economical manner.
- This carbonization system can therefore be used to retrofit an existing combustion or firing system, the excess carbonization gas and the residual material from the smoldering drum can be burned.
- no heat and mass transport with the cross connections required for example, in the prior art according to EP-OS 0 340 537 between the existing combustion plant and the supplied or retrofitted smoldering plant for heating them are required.
- the smoldering plant shown comprises a smoldering plant 1 with a downstream combustion plant 2.
- the smoldering plant 1 comprises a smoldering drum 4 with a feed device 6 for waste a and a discharge chamber 8 for separating the smoldering gas s produced from the outgassed residue r.
- heating pipes 10 are arranged which are charged with a heating gas g.
- An inflow line 12 and an outflow line 14 are connected to the carbonization drum 4.
- the inflow line 12 is connected to a mixing chamber 16 which is preceded by a combustion chamber 18.
- a blower or suction train 20 is located in the outflow line 14.
- a first branch 22 of the outflow line 14 is connected to the mixing chamber 16.
- a second branch 24 of the discharge line 14 is connected to the combustion chamber 18.
- the discharge chamber 8 is connected via a line 26 to a device 28 for dust separation, for example a cyclone.
- the device 28 is connected to the combustion chamber 18 via a line 30.
- An outlet 27 of the device 28 is connected via a line 32 to a combustion chamber 34 of the combustion system 2.
- the combustion chamber 34 is followed by a waste heat boiler or flue gas cooler 36 with heating surfaces 38.
- a device 42 for flue gas cleaning and a further blower or a suction draft 44 are connected in a flue gas line 40.
- the flue gas line 40 opens into a chimney (not shown).
- the outflow line 14 of the carbonization drum 4 opens into the flue gas line 40 via a valve 46 in the area between the waste heat boiler 36 and the cleaning device 42.
- a parallel branch 43 with a valve 45 ends in the waste heat boiler 36 in the area between adjacent heating surfaces 38.
- the flue gas line 40 is connected via a line 47 and valves 48 and 50 to branch 22 or branch 24 of outflow line 14.
- Waste a is fed to the smoldering drum 4 via a conveying device 52.
- the waste a is pyrolyzed or smoldered in the Schweltro - ⁇ l 4 through the pipes 10 heated by hot flue gas or heating gas g.
- the resulting carbonization gas s and the outgassed residual material r are separated from one another in the discharge chamber 8.
- the residue r is fed to further processing via a discharge opening 54. He can e.g. be burned in the combustion chamber 34.
- the carbonization gas s is by means of a
- Sieves or filters 55 roughly cleaned by separating fibers and large pieces and then sucked into the device 28 via the line 26.
- the carbonization gas s contains several parts by weight of fine dust with a larger proportion of combustible material.
- the carbonization gas s enters the device 28 at the top tangentially via an inlet opening 56, which is designed in the form of a relatively high narrow slot (not shown in any more detail).
- an inlet opening 56 which is designed in the form of a relatively high narrow slot (not shown in any more detail).
- a low-dust partial flow t- of 20 to 50%, preferably 30%, of the carbonization gas s is removed from the device 28 via a suction pipe 62 which extends far beyond the inlet opening 56 and is fed to the combustion chamber 18 for combustion.
- the dust content of the partial stream t, of the carbonization gas s can be further reduced by the different design of the suction tube 62.
- Longitudinal slots in the suction pipe 62 have a positive influence on the dust separation, because the entry speed is thereby reduced and made more uniform.
- the partial flow t-, the dedusted or dust-depleted carbonization gas s is used for heating gas generation.
- the partial flow t, of the carbonization gas s in the combustion chamber 18 is burned at a temperature T of approximately 1250 ° C.
- the heating gas g flowing out of the smoldering drum 4 and cooled to a temperature T 2 'of approx. 250 ° C. is first brought to a temperature T in a heat exchanger 80 connected to the discharge line 14 on the pressure side of the blower 20 2 "of approximately 360 ° C.
- An adjustable partial flow t, of the preheated heating gas g is then fed via the branch 22 into the mixing chamber 16.
- a partial flow t of the preheated heating gas g that can be adjusted by means of the valve 25 can be fed directly to the combustion chamber 18. At least part of the heating gas g thus flows through the mixing chamber 16 and the inflow line 12 as well as through the heating pipes 10 and the heat exchanger 80 and via the branches 22, 24 of the outflow line 14 in a closed partial circuit 70.
- the outlet opening 27 of the device 28 for the main or residual flow t 2 of the carbonization gas s is likewise tangentially in the lower region of the device 28.
- the dust concentrated towards the wall arrives with the residual flow t 2 via the line 32 to the combustion chamber 34.
- the sense of rotation of the flow of the carbonization gas s is the same after entry into device 28 and before exit from device 28.
- the bottom area 60 of the device 28 is raised in the shape of a cone or parabola towards the center, so that no dust deposits can form there.
- the hot flue gas generated in the combustion chamber 34 during the combustion of the residual stream t 2 of the carbonization gas s is used in the waste heat boiler 36 to generate steam.
- the transport of this residual stream t 2 of the carbonization gas s from the carbonization drum 4 via the device 28 and the combustion chamber 30 as well as via the waste heat boiler 36 and the cleaning system 42 takes place via the suction fan 44.
- the heating gas g not required for the heating gas generation flows in an open circuit 72 via the valve 46 and is mixed with the flue gas flowing out of the combustion chamber 34 in front of the cleaning device 42. In the cleaning device 42, only completely burned flue gas is thus cleaned.
- Steam from the waste heat boiler 36 serves as the heat transfer medium for the heat exchanger 80.
- the steam is removed from the heating surfaces 38 at point A and fed to the heat exchanger 80 at an inlet temperature of approximately 390 ° C.
- the cooled steam exiting the heat exchanger 80 at point B flows back to the heating surfaces 38 at a temperature of approximately 330 ° C.
- heating gas g is on the suction side of the blower 20 in the When the valves 23 and 25 are closed, the heating gas g is led out of the carbonization drum 4 in the circuit 72 and the flue gas is admixed via the valve 49 upstream and via the valve 46 downstream of the waste heat boiler 36. The gas mixture is cleaned in device 42 alone. Heating gas circuit 72 is now closed via line 47 and valves 48 and 50, heat exchanger 80 'then lying in line 47. In this case, clean flue gas is removed from the pressure side of the fan 44 and preheated in the heat exchanger 80 'arranged in the line 47. The preheated flue gas is then mixed into the heating gas g again.
- the independently operated smoldering system 1 is particularly advantageously suitable for retrofitting an existing combustion system 2. For this purpose, essentially only a connection has to be made via the line 32.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Incineration Of Waste (AREA)
- Gasification And Melting Of Waste (AREA)
- Coke Industry (AREA)
- Air Supply (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Drying Of Solid Materials (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP51366693A JP3299967B2 (ja) | 1992-02-17 | 1993-02-11 | 低温乾留ドラムの加熱方法及び装置並びに低温乾留燃焼プラント |
DE59302381T DE59302381D1 (de) | 1992-02-17 | 1993-02-11 | Verfahren und einrichtung zum beheizen einer schweltrommel |
EP93903164A EP0626988B1 (de) | 1992-02-17 | 1993-02-11 | Verfahren und einrichtung zum beheizen einer schweltrommel |
KR1019940702836A KR100234226B1 (ko) | 1992-02-17 | 1993-02-11 | 저온증류 드럼의 가열방법 및 장치 |
CZ941955A CZ282500B6 (cs) | 1992-02-17 | 1993-02-11 | Způsob ohřevu bubnu pro nízkotepelnou karbonizaci a zařízení k provádění tohoto způsobu |
US08/291,768 US5935387A (en) | 1992-02-17 | 1994-08-17 | Method and device for heating a low temperature carbonization drum and low temperature carbonization/combustion plant having the device |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19924204728 DE4204728A1 (de) | 1992-02-17 | 1992-02-17 | Verfahren und einrichtung zum beheizen einer schweltrommel |
DEP4204728.5 | 1992-02-17 | ||
DEP4217301.9 | 1992-05-25 | ||
DE4217301A DE4217301A1 (de) | 1992-02-17 | 1992-05-25 | Verfahren und Einrichtung zum Beheizen einer Schweltrommel |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/291,768 Continuation US5935387A (en) | 1992-02-17 | 1994-08-17 | Method and device for heating a low temperature carbonization drum and low temperature carbonization/combustion plant having the device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993016147A1 true WO1993016147A1 (de) | 1993-08-19 |
Family
ID=25911934
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1993/000119 WO1993016147A1 (de) | 1992-02-17 | 1993-02-11 | Verfahren und einrichtung zum beheizen einer schweltrommel |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0626988B1 (de) |
JP (1) | JP3299967B2 (de) |
KR (1) | KR100234226B1 (de) |
CN (1) | CN1038942C (de) |
AT (1) | ATE137257T1 (de) |
CZ (1) | CZ282500B6 (de) |
DE (2) | DE4217301A1 (de) |
ES (1) | ES2086926T3 (de) |
WO (1) | WO1993016147A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996031735A1 (de) * | 1995-04-05 | 1996-10-10 | Mannesmann Ag | Verfahren und vorrichtung zur thermischen behandlung von abfallstoffen |
FR2734343A1 (fr) * | 1995-05-16 | 1996-11-22 | Ostan Raffaele | Four rotatif de pyrolyse des dechets |
CN104315524A (zh) * | 2014-09-11 | 2015-01-28 | 中复神鹰碳纤维有限责任公司 | 一种碳纤维低温碳化废气处理方法 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0815393B1 (de) * | 1995-03-21 | 1999-01-07 | Metallgesellschaft Aktiengesellschaft | Verfahren zum behandeln von hausmüll |
DE102005001569B4 (de) * | 2005-01-13 | 2008-11-13 | Strohmenger, Patrick, Dipl.-Ing. | Anlage zur Verschwelung eines Pyrolyseguts |
DE202007016421U1 (de) | 2006-11-22 | 2009-04-02 | Morschett, Peter | Anlage zur Behandlung und Aufbereitung von Abfallstoffen aus Verbundmaterialien, insbesondere Verbundkartons (Tetrapacks) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2244753B1 (de) * | 1972-09-08 | 1973-10-18 | Mannesmann Ag, 4000 Duesseldorf | Verfahren und Vorrichtung zur Ver mchtung von Mull |
DE3018572A1 (de) * | 1980-05-14 | 1981-11-19 | Deutsche Kommunal-Anlagen Miete GmbH, 8000 München | Pyrolyseofen, bei dem die pyrolysegase zur verbrennung dem brenner des pyrolyseofens zugefuehrt werden, und verfahren zur zufuehrung von pyrolysegas zur verbrennung in einem brenner eines pyrolyseofens in welchem das pyrolysegas entstanden ist |
DE3815187A1 (de) * | 1988-05-04 | 1989-11-16 | Siemens Ag | Temperaturgeregelte anlage zur thermischen abfallentsorgung |
-
1992
- 1992-05-25 DE DE4217301A patent/DE4217301A1/de not_active Ceased
-
1993
- 1993-02-11 KR KR1019940702836A patent/KR100234226B1/ko not_active IP Right Cessation
- 1993-02-11 JP JP51366693A patent/JP3299967B2/ja not_active Expired - Lifetime
- 1993-02-11 EP EP93903164A patent/EP0626988B1/de not_active Expired - Lifetime
- 1993-02-11 DE DE59302381T patent/DE59302381D1/de not_active Expired - Fee Related
- 1993-02-11 CZ CZ941955A patent/CZ282500B6/cs not_active IP Right Cessation
- 1993-02-11 AT AT93903164T patent/ATE137257T1/de not_active IP Right Cessation
- 1993-02-11 WO PCT/DE1993/000119 patent/WO1993016147A1/de active IP Right Grant
- 1993-02-11 ES ES93903164T patent/ES2086926T3/es not_active Expired - Lifetime
- 1993-02-17 CN CN93103173A patent/CN1038942C/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2244753B1 (de) * | 1972-09-08 | 1973-10-18 | Mannesmann Ag, 4000 Duesseldorf | Verfahren und Vorrichtung zur Ver mchtung von Mull |
DE3018572A1 (de) * | 1980-05-14 | 1981-11-19 | Deutsche Kommunal-Anlagen Miete GmbH, 8000 München | Pyrolyseofen, bei dem die pyrolysegase zur verbrennung dem brenner des pyrolyseofens zugefuehrt werden, und verfahren zur zufuehrung von pyrolysegas zur verbrennung in einem brenner eines pyrolyseofens in welchem das pyrolysegas entstanden ist |
DE3815187A1 (de) * | 1988-05-04 | 1989-11-16 | Siemens Ag | Temperaturgeregelte anlage zur thermischen abfallentsorgung |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996031735A1 (de) * | 1995-04-05 | 1996-10-10 | Mannesmann Ag | Verfahren und vorrichtung zur thermischen behandlung von abfallstoffen |
FR2734343A1 (fr) * | 1995-05-16 | 1996-11-22 | Ostan Raffaele | Four rotatif de pyrolyse des dechets |
CN104315524A (zh) * | 2014-09-11 | 2015-01-28 | 中复神鹰碳纤维有限责任公司 | 一种碳纤维低温碳化废气处理方法 |
Also Published As
Publication number | Publication date |
---|---|
JPH07503743A (ja) | 1995-04-20 |
KR950700378A (ko) | 1995-01-16 |
ATE137257T1 (de) | 1996-05-15 |
ES2086926T3 (es) | 1996-07-01 |
DE59302381D1 (de) | 1996-05-30 |
CN1038942C (zh) | 1998-07-01 |
KR100234226B1 (ko) | 1999-12-15 |
CZ195594A3 (en) | 1994-12-15 |
EP0626988B1 (de) | 1996-04-24 |
CZ282500B6 (cs) | 1997-07-16 |
CN1076472A (zh) | 1993-09-22 |
JP3299967B2 (ja) | 2002-07-08 |
EP0626988A1 (de) | 1994-12-07 |
DE4217301A1 (de) | 1993-12-02 |
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