AU651872B2 - Drying of hydrous solid fuels, in particular raw brown coal - Google Patents
Drying of hydrous solid fuels, in particular raw brown coal Download PDFInfo
- Publication number
- AU651872B2 AU651872B2 AU12352/92A AU1235292A AU651872B2 AU 651872 B2 AU651872 B2 AU 651872B2 AU 12352/92 A AU12352/92 A AU 12352/92A AU 1235292 A AU1235292 A AU 1235292A AU 651872 B2 AU651872 B2 AU 651872B2
- Authority
- AU
- Australia
- Prior art keywords
- drying
- exhaust vapour
- generating plant
- heating
- brown coal
- 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.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10F—DRYING OR WORKING-UP OF PEAT
- C10F5/00—Drying or de-watering peat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/06—Returning energy of steam, in exchanged form, to process, e.g. use of exhaust steam for drying solid fuel or plant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
- F23K1/04—Heating fuel prior to delivery to combustion apparatus
-
- 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
- Y02E20/14—Combined heat and power generation [CHP]
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Drying Of Solid Materials (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Description
OPI DATE 15/09/92 AOJP DATE 29/10/92 APPLN. ID 12352 92* o PCT NUMBER PrT/DE92/no01f5 vESENS (PCT) (51) Internationale Patentklassifikation 5 (11) Internationale Veriiflentlichungsnummer: WNO 92/14801 CI OF 5100, F01lK 17/06 Al (43) Internationales Veriiffentlichungsdatum: 3. September 1992 (03.09.92) (21) Internationalcs Aktenzeichen: PCT/DE92/O00105 Veriiffentlicht Mit internationalen RecIherchenbericlii.
(22) Internationales Anmeldedaturn: 13. Februar 1992 (13.02.92) Prioritiitsdaten: P 41 05129,7 15. Februar 1991 (15.02.91) DE 617 (71) Aunelder: VEAG VEREINIGTE ENERGIEWERKE AK- TI ENGES ELLSC HAFT [DE/DE]; Allee der Kosmonauten 29, D-I 1140 Berlin (DE).
(74) Anwalt: ZINKEN-SOMMER, Rainer; VEAG Vereinigte Energiewerke Aktiengesellschaft, Referat Patent- und Lizenzwesen, Allee der Kosmonauten 29, D-l 1140 Berlin
(DE).
(81) Bestimmungsstaaten: AT (europiiisches Patent), AU, BE (europiisches Patent), BG, CA, CH (europflisches Patent), DE (europdiisches Patent), DK (europiisches Patent), ES (europflisc'hes Patent), FR (europiiisches Patent), GB (europflisches Patent), GR (europllisches Patent), HU, IT (europflisches Patent), JP, LU (europaiisches Patent), MC (europfiisches Patent), NL (europflisches Patent), RO, RU, SE (europfiisches Patent).
(54)Title: PROCESS FOR DRYING HYDROUS SOLID FUELS, IN PARTICULAR RAW BROWN COAL (54)Bezeichnung: VERFAHREN ZUR TROCKNUNG WASSERHALTIGER FESTER BRENNSTOFFE, INSBESONDE- RE ROHBRAUNKOHLE (57) Abstract The invention concerns a process for drying hydrous solid fuels, in particular raw brown coals, in a drying container of a heat-generating plant. The aim of the invention is to achieve substantial reduction I of the CO,) emission per useful effect unit by reduced use of fossil energy carriers; the devices for drying raw brown coal are to be con--- nected to the heat-generating installation in such a manner that the 0~ energy of the exhaust vapours is fully utilized. According to the invention, this is achieved by virtue of the fact that the drying container is heated directly by a saturated steam circuit of the heating boiler of the steam-generatinL. Aant, the dust-free exhaust vapours under average pressure are fed to a heat supply line and the exhaust va- Fpour condensate is used, following chemical processing, to supply water to a heating plant and/or a heating network.
(57) Zusanimenfassung Die Erfindung betrifft emn Verfahren zur Trocknung wasserhaltiger fester Brennstoffe, insbesondere Rohbraunkohle, in einem Trocknungsbehfilter ciner W~irmeerzeugungsanlage. Der Erfindung liegt die Aufgabe zugrunde, eine deutliche Reduzierung der C0 2 )-Emission je Nutzleistungseinheit dlurch verringerten Einsatz fossiler Energietrifiger zu erreichen, wobei die Trocknungseinrichtungen fOr Rohibraunkohle so mit der Wilrmeerzeugungsanlage verbunden werden, dag cine vollstilindige energetische Verwertung des Brildens realisiert wird, Dies wird erfindungsgenig dadurch erreicht, daA der Trocknungsbehfilter Ober einen eigenen Sattdampfkreislauf vom Heizkessel der Dam pferzeugu ngsanlage direkt erhitzt, der entstaubte und unter Mitteldruck stehende BrOden auf eine Wilrmeversorgungsschiene gegeben und das Br~denikondenzat nach dessen chemnischer Aufbereitung zur Wasserversorgung eines Heizwverkes und/oder eines Heiznetzes eirgesetzt wird.
1- PROCESS TO DRY HYDROUS SOLID FUELS, IN PARTICULAR RAW BROWN COAL The invention concerns a process for etrying hydrous solid fuels, in particular raw brown coal, in a drying vessel of a heat generating plant.
A plant arrangement to dry raw coal prior to its use for generating electricity in condensation power plants is known. This known arrangement enables to fully utilise the condensation heat of the exhaust vapour but neither an exhaust vapour reverse compression nor a separate electric exhaust vapour dedusting is carried out. The drying of the raw coal is carried out in a filled shaft reactor provided with diaphragm tube walls which act as heating surfaces. Bleed steam from the main turbine of the power plant is used as heating steam and supplied to the filled shaft reactor. The exhaust vapour obtained therefrom is dedusted at the exit into the exhaust vapour channel, i.e. when leaving the dryer, by means of a filter wall which can be steam cleaned (DD-PS 281 237). As described in DD-PS 281 237, the energy of the exhaust vapour is fully utilised as secondary energy only in that it is divided into several and qualitatively different applications; this requires a complicated integration of different appliances into the overall conception of the plant. In addition, the known arrangement is intended exclusively for power plants in which the generation of electricity is effected in "pure" condensation operation only.
It would thus be beneficial if the present invention could achieve a considerable reduction of the CO 2 emission per effective power output unit of a power generating plant by using smaller amounts of fossil energy carriers. Heretofore, it would be advantageous to integrate the drying devices for the raw brown coal into 5 the heat generating unit in such a manner that the energy S:17950E/12.494 2 of the exhaust vapour is fully utilised.
In a preferred form, the present invention provides a process for drying hydrous solid fuels, in particular raw brown coal, in a drying vessel of a heat-steam generating plant, wherein the exhaust vapour of the drying vessel is condensed, expanded and treated, characterised by directly heating the drying vessel from a heating boiler of the steam generating plant via its own saturated steam circuit, by conveying the dedusted exhaust vapour, which is under medium pressure, to a heat supply line, by condensing the exhaust vapour, by chemically treating the exhaust vapour condensate, and by utilising the treated exhaust %rapour condensate as water supply for the heat generating plant and/or for a heating network.
The invention will be explained in detail below based on an embodiment thereof and with reference to the accompanying drawing, in which: Fig. 1 shows in a schematic arrangement a heating S 20 house for raw brown coal with separate coal drying.
The drying vessel 1 shown in Fig. 1 is equipped with a heating surface bundle 2 and is connected via pipeline 3 and conveying device 4 with the steam boiler 5. The drying vessel 1 and the steam boiler 5 have a common or own saturated steam circuit 6. The exhaust vapour produced in the drying vessel 1 is supplied via pipeline 7 to the heating water pre-heater 8 and via an expander 9 and an exhaust vapour treatment unit 10 to the water supply of the steam vessel 5 and/or to the water supply of a heating network 11.
The advantages of the invention are: the illustrated inventive circuitry enables a r e reduction of C0 2 -formation and consequently C0 2 -emission S :17950/12.4.94 3 from the heat generating plant while otherwise effecting the same effective power output therefrom; a further advantage is a reduction in use of additives for retaining SO 2 from the exhaust gases and consequently a reduction of accumulated ash and waste product accumulation in the power plant; furthermore, there is the possibility of utilising the exhaust vapour condensate to provide a water supply for an appliance of the heat (and power) generating plant, namely the heating boiler.
'4/ S:17950E/12.4.94
Claims (2)
1. Process for drying hydrous solid fuels, in particular raw brown coal, in a drying vessel of a heat/steam generating plant, wherein the exhaust vapour of the drying vessel is condensed, expanded and treated, characterised by directly heating the drying vessel from a heating boiler of the steam generating plant via its own saturated steam circuit, by conveying the dedusted exhaust vapour, which is under medium pressure, to a heat supply line, by condensing the exhaust vapour, by chemically treating the exhaust vapour condensate, and by utilising the treated exhaust vapour condensate as water supply for the heat generating plant and/or for a heating network.
2. Process for drying hydrous solid fuels as hereinbefore described with reference to wigure 1. DATED this 12th day of April 1994 VEAG VEREINIGTE ENERGIEWERKE AKTIENGESELLSCHAFT By their Patent Attorneys GRIFFITH HACK CO S:17950E/12,4.94 Abstract The invention concerns a process to dry hydrous solid fuels, in particular raw brown coal, in a drying vessel of a heat generating plant. The object of the invention is to achieve a considerable reduction of the CO 2 emission per actual output unit by reduced use of fossil energy carriers, wherein the drying devices for the raw brown coal are connected with the heat generating plant in such a manner that a complete energy utilisation of the exhaust vapour is realised. According to the invention this will be achieved by that the drying vessel is directly heated from the heating boiler of the steam generating plant over its own saturated steam circuit, the dedusted exhaust vapour which is under medium pressure is conveyed to a heat supply rail and the exhaust vapour condensate, after a chemical treatment, is used for the water supply of a heating plant and/or of a heating network.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4105129 | 1991-02-15 | ||
DE4105129A DE4105129A1 (en) | 1991-02-15 | 1991-02-15 | METHOD FOR DRYING WATER-BASED SOLID FUELS, IN PARTICULAR RAW BROWN COAL |
PCT/DE1992/000105 WO1992014801A1 (en) | 1991-02-15 | 1992-02-13 | Process for drying hydrous solid fuels, in particular raw brown coal |
Publications (2)
Publication Number | Publication Date |
---|---|
AU1235292A AU1235292A (en) | 1992-09-15 |
AU651872B2 true AU651872B2 (en) | 1994-08-04 |
Family
ID=6425386
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU12352/92A Ceased AU651872B2 (en) | 1991-02-15 | 1992-02-13 | Drying of hydrous solid fuels, in particular raw brown coal |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0639215B1 (en) |
JP (1) | JPH07507332A (en) |
AU (1) | AU651872B2 (en) |
DE (2) | DE4105129A1 (en) |
WO (1) | WO1992014801A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5695532A (en) * | 1992-05-08 | 1997-12-09 | State Electricity Commission Of Victoria | Integrated carbonaceous fuel drying and gasification process and apparatus |
DE102008059488B3 (en) * | 2008-11-28 | 2010-09-16 | Siemens Aktiengesellschaft | Quenching of gasification device, involves gasifying in device provided with quenching device, feeding quenching device via circuit with quench water, and back-feeding circuit with water supplied in portion by process condensate |
CN108884726A (en) * | 2016-10-21 | 2018-11-23 | 波卡尔奥尔曼材料和能源公司 | It is freely generated electricity in MDF, OSB, force fit plate and plywood production facility using waste-heat power generation-w method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990000219A1 (en) * | 1988-06-30 | 1990-01-11 | Imatran Voima Oy | Combined gas-turbine and steam-turbine power plant and method for utilization of the thermal energy of the fuel to improve the overall efficiency of the power-plant process |
WO1992014802A1 (en) * | 1991-02-15 | 1992-09-03 | Veag Vereinigte Energiewerke Aktiengesellschaft | Process for dressing brown coal for combined gas and steam processes |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE931617C (en) * | 1949-07-17 | 1955-08-11 | Grosskraftwerk Mannheim A G | Process for operating a pulverized coal furnace with grinding drying, heating of the broth and discharge of part of the broth into the open air |
DE3525642A1 (en) * | 1984-09-11 | 1987-01-29 | Rudolf Dr Wieser | Integrated coal drying device for steam boilers or fluidised-bed furnaces |
US4656955A (en) * | 1986-05-01 | 1987-04-14 | Kuo Tsung H | Refuse incineration system |
CS273337B2 (en) * | 1986-12-31 | 1991-03-12 | Rheinische Braunkohlenw Ag | Method of damp loose materials drying in a drier with a whirling bed and equipment for carrying out this method |
DD277735A1 (en) * | 1988-12-07 | 1990-04-11 | Orgreb Inst Kraftwerke | METHOD FOR GENERATING ELECTRICAL ENERGY AND / OR HEATING AND PROCESSING WASTE |
-
1991
- 1991-02-15 DE DE4105129A patent/DE4105129A1/en not_active Ceased
-
1992
- 1992-02-13 JP JP4504123A patent/JPH07507332A/en active Pending
- 1992-02-13 WO PCT/DE1992/000105 patent/WO1992014801A1/en active IP Right Grant
- 1992-02-13 AU AU12352/92A patent/AU651872B2/en not_active Ceased
- 1992-02-13 DE DE59206258T patent/DE59206258D1/en not_active Expired - Fee Related
- 1992-02-13 EP EP92904450A patent/EP0639215B1/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990000219A1 (en) * | 1988-06-30 | 1990-01-11 | Imatran Voima Oy | Combined gas-turbine and steam-turbine power plant and method for utilization of the thermal energy of the fuel to improve the overall efficiency of the power-plant process |
WO1992014802A1 (en) * | 1991-02-15 | 1992-09-03 | Veag Vereinigte Energiewerke Aktiengesellschaft | Process for dressing brown coal for combined gas and steam processes |
Also Published As
Publication number | Publication date |
---|---|
EP0639215B1 (en) | 1996-05-08 |
EP0639215A1 (en) | 1995-02-22 |
AU1235292A (en) | 1992-09-15 |
WO1992014801A1 (en) | 1992-09-03 |
DE59206258D1 (en) | 1996-06-13 |
JPH07507332A (en) | 1995-08-10 |
DE4105129A1 (en) | 1992-08-20 |
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