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公开(公告)号：WO2010083865A3
公开(公告)日：2010-10-21
申请号：PCT/EP2009009115
申请日：2009-12-18
Applicant: OUTOTEC OYJ , MISSALLA MICHAEL , HILTUNEN PEKKA , BLIGH ROGER , SCHMIDBAUER ERWIN , KLETT CORNELIS
Inventor： MISSALLA MICHAEL , HILTUNEN PEKKA , BLIGH ROGER , SCHMIDBAUER ERWIN , KLETT CORNELIS
Abstract: The present invention relates to the production of metal oxide from metal salts, in particular from aluminum hydroxide, wherein the metal salt is preheated in a first preheating stage, precalcined in a second preheating stage and calcined to metal oxide in a fluidized-bed reactor, and wherein the product obtained then is cooled in at least one suspension heat exchanger and subsequently in a multi- stage indirect cooler. To reduce the energy demand of a calcining plant, fluidizing air is supplied to the reactor with a temperature of up to 150 °C, and before entering the first preheating stage the metal salt is at least partly supplied to a hydrate drier in which it is indirectly heated with heat transfer medium from the first stage of the indirect cooler and dried.
Abstract translation: 本发明涉及从金属盐特别是氢氧化铝制备金属氧化物，其中金属盐在第一预热阶段预热，在第二预热阶段预煅烧并在流化床反应器中煅烧成金属氧化物， 并且其中然后获得的产物在至少一个悬浮式热交换器中冷却，随后在多级间接冷却器中冷却。 为了减少煅烧设备的能量需求，将流化空气以高达150℃的温度供给反应器，并且在进入第一预热阶段之前，将金属盐至少部分地供应到水合物干燥器 间接用间接加热的传热介质从第一级的间接冷却器中干燥。
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公开(公告)号：CA2745572C
公开(公告)日：2017-06-20
申请号：CA2745572
申请日：2009-12-18
Applicant: OUTOTEC OYJ
Inventor： MISSALLA MICHAEL , HILTUNEN PEKKA , BLIGH ROGER , SCHMIDBAUER ERWIN , KLETT CORNELIS , SCHNEIDER GUENTER
Abstract: The present invention relates to the production of metal oxide from metal salts, in particular from aluminum hydroxide, wherein the metal salt is preheated in a first preheating stage, precalcined in a second preheating stage and calcined to metal oxide in a fluidized-bed reactor, and wherein the product obtained then is cooled in at least one suspension heat exchanger and subsequently in a multi-stage indirect cooler. To reduce the energy demand of a calcining plant, fluidizing air is supplied to the reactor with a temperature of up to 150 °C, and before entering the first preheating stage the metal salt is at least partly supplied to a hydrate dryer in which it is indirectly heated with heat transfer medium from the first stage of the indirect cooler and dried.
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公开(公告)号：GB2478240B
公开(公告)日：2014-04-30
申请号：GB201109904
申请日：2009-12-18
Applicant: OUTOTEC OYJ
Inventor： MISSALLA MICHAEL , HILTUNEN PEKKA , BLIGH ROGER , SCHMIDBAUER ERWIN , KLETT CORNELIS , SCHNEIDER GUNTER
Abstract: A process for producing metal oxide from a metal salt includes supplying a first part of the metal salt to a hydrate drier so as to indirectly heat the first part of the metal salt in the hydrate drier using a heat transfer medium from a first stage of a multi-stage indirect cooler so as to dry the first part of the metal salt in the hydrate drier and so as to control a waste gas temperature of the process. A second part of the metal salt is guided as a partial stream past the hydrate drier. The metal salt is preheated in a first preheating stage and precalcined in a second preheating stage. The metal salt and a fluidizing gas having a temperature of 150° C. or less are supplied to a fluidized bed reactor so as to calcine the metal salt to form a metal oxide product. The metal oxide product is cooled in at least one suspension heat exchanger and then in the multi-stage indirect cooler.
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公开(公告)号：DE102007041586B4
公开(公告)日：2014-03-27
申请号：DE102007041586
申请日：2007-09-01
Applicant: OUTOTEC OYJ
Inventor： HILTUNEN PEKKA , SCHNEIDER GUENTER , MISSALLA MICHAEL
Abstract: Verfahren zur Wärmebehandlung von körnigen Feststoffen, insbesondere zur Herstellung von Aluminiumoxid aus Aluminiumhydroxid, wobei die Feststoffe nach Vorwärmung in wenigstens einer Vorwärmstufe in einem Wirbelschichtreaktor erhitzt und dann wenigstens einem Wirbelschichtkühler zugeführt werden, in welchem die wärmebehandelten Feststoffe mit Hilfe von Fluidisierungsluft gekühlt werden, wobei man die Fluidisierungsluft aus dem Kühler abzieht und als Sekundärgas in den Wirbelschichtreaktor leitet und der Sekundärgasstrom aufgeteilt und ein Bypassstrom an dem Wirbelschichtreaktor vorbei in eine Förderleitung für die Feststoffe geleitet wird, dadurch gekennzeichnet, dass die Größe des Bypassstromes variabel ist und dass die Größe des Bypassstromes in Abhängigkeit von der Zufuhrrate der Feststoffe in den Wirbelschichtreaktor geregelt wird.
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公开(公告)号：EE05623B1
公开(公告)日：2013-02-15
申请号：EEP200900070
申请日：2008-01-23
Applicant: OUTOTEC OYJ
Inventor： BLIGH ROGER , HILTUNEN PEKKA , KLETT CORNELIS , MISSALLA MICHAEL , REEB BERND , SACHAROW LILLI , STROEDER MICHAEL , STURM PETER
Abstract: The method for the distribution of a solid flow (m 0) drawn-off from a cyclone or a fluidized bed container (1), comprises conducting the solid flow (m 0) over a first down pipe (7) and then fluidizing at the bottom of the down pipe by supplying a carrier gas, conveying a part of the solid flow (m 1) towards the top by the carrier gas over a first riser (9) branching off from the first down pipe, leading away the remaining part of the solid flow (m 0) over a second down pipe (13) adjacent itself to the first down pipe and then fluidizing at the bottom of the second down pipe. The method for the distribution of a solid flow (m 0) drawn-off from a cyclone or a fluidized bed container (1), comprises conducting the solid flow (m 0) over a first down pipe (7) and then fluidizing at the bottom of the down pipe by supplying a carrier gas, conveying a part of the solid flow (m 1) towards the top by the carrier gas over a first riser (9) branching off from the first down pipe, leading away the remaining part of the solid flow (m 0) over a second down pipe (13) adjacent itself to the first down pipe and then fluidizing at the bottom of the second down pipe by supplying the carrier gas, and conveying a part of the solid flow (m 2) towards the top by the carrier gas over a second riser (15) branching off from the second down pipe. The supply of the carrier gas is varied at the bottom of the first and/or the second down pipe. The pressure difference over the fluidized bed container is used as controlled variable for the supply of the carrier gas to the first or the second down pipe. The supply of the carrier gas is constantly held at the bottom of the first down pipe. The pressure difference between the bottom and the head of the first and/or the second down pipe is smaller than the pressure loss corresponding to the fluidized down pipe. The pressure at the bottom of each down pipe is larger than the pressure at the head of this down pipe. The conveying air is brought beneath the first and/or the second riser in each case over a downwardly arranged nozzle. The carrier gas is admitted with low volume flow for the interruption of the solid flow in a riser, so that the minimum fluidization speed is not exceeded in the riser. An independent claim is included for a device for the distribution of a solid flow drawn-off from a cyclone or a fluidized bed container.
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Patent Agency Ranking
公开(公告)号：EA016569B1
公开(公告)日：2012-05-30
申请号：EA201000417
申请日：2008-07-10
Applicant: OUTOTEC OYJ
Inventor： HILTUNEN PEKKA , SCHNEIDER GUNTER , MISSALLA MICHAEL
Abstract: Визобретенииприпроизводствеоксидаалюминияизгидроксидаалюминияуказанныйгидроксидалюминиякальцинируютв реакторес псевдоожиженнымслоемс использованиемпредварительногонагрева, поменьшеймерев однойступенипредварительногонагрева, изатемнаправляютпоменьшеймерев одинохладительс псевдоожиженнымслоем, вкоторомкальцинированныетвердыечастицыматериалаохлаждаютс помощьюпсевдоожижающеговоздуха, приэтомпсевдоожижающийвоздухотводятизохладителяи вводятв реакторс псевдоожиженнымслоемв качествевторичноговоздуха. Длятогочтобыприработеустановкис частичнойнагрузкойминимизироватьудельноепотреблениеэнергии, потоквторичноговоздухаразделяют, байпасныйпотокнаправляютв обходреакторас псевдоожиженнымслоеми вводятв трубопроводдляподачитвердыхчастиц.
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公开(公告)号：DE102007009758A1
公开(公告)日：2008-08-28
申请号：DE102007009758
申请日：2007-02-27
Applicant: OUTOTEC OYJ
Inventor： BLIGH ROGER , HILTUNEN PEKKA , KLETT CORNELIS , MISSALLA MICHAEL , REEB BERND , SACHAROW LILLI , STROEDER MICHAEL , STURM PETER
Abstract: The method involves drawing off of a solid flow by a down pipe (6), and fluidizing the solid flow on a base (8) of the down pipe by a supply of carrier gas. The solid flow is transported to a high level by an ascending pipe (9) branched off by the down pipe, and dimension of the solid flow extracted by the ascending pipe is varied by variable supply of the carrier gas. The level of the flow or solid stock in a solid container is used as a controlled variable, and a volume flow of the carrier gas is used as a correcting variable of a control loop. Independent claims are also included for the following: (1) a method for regulating a temperature and/or mixing ratio in a mixing vessel (2) a device for regulating a level and/or solid stock in a solid container.
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公开(公告)号：AU2009337948B2
公开(公告)日：2014-05-15
申请号：AU2009337948
申请日：2009-12-18
Applicant: OUTOTEC OYJ
Inventor： MISSALLA MICHAEL , HILTUNEN PEKKA , BLIGH ROGER , SCHMIDBAUER ERWIN , KLETT CORNELIS , SCHNEIDER GUNTER
Abstract: The present invention relates to the production of metal oxide from metal salts, in particular from aluminum hydroxide, wherein the metal salt is preheated in a first preheating stage, precalcined in a second preheating stage and calcined to metal oxide in a fluidized-bed reactor, and wherein the product obtained then is cooled in at least one suspension heat exchanger and subsequently in a multi- stage indirect cooler. To reduce the energy demand of a calcining plant, fluidizing air is supplied to the reactor with a temperature of up to 150 °C, and before entering the first preheating stage the metal salt is at least partly supplied to a hydrate drier in which it is indirectly heated with heat transfer medium from the first stage of the indirect cooler and dried.
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公开(公告)号：EE05624B1
公开(公告)日：2013-02-15
申请号：EEP200900071
申请日：2008-01-23
Applicant: OUTOTEC OYJ
Inventor： BLIGH ROGER , HILTUNEN PEKKA , KLETT CORNELIS , MISSALLA MICHAEL , REEB BERND , SACHAROW LILLI , STROEDER MICHAEL , STURM PETER
Abstract: The method involves drawing off of a solid flow by a down pipe (6), and fluidizing the solid flow on a base (8) of the down pipe by a supply of carrier gas. The solid flow is transported to a high level by an ascending pipe (9) branched off by the down pipe, and dimension of the solid flow extracted by the ascending pipe is varied by variable supply of the carrier gas. The level of the flow or solid stock in a solid container is used as a controlled variable, and a volume flow of the carrier gas is used as a correcting variable of a control loop. Independent claims are also included for the following: (1) a method for regulating a temperature and/or mixing ratio in a mixing vessel (2) a device for regulating a level and/or solid stock in a solid container.
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公开(公告)号：AU2008221091B2
公开(公告)日：2012-07-05
申请号：AU2008221091
申请日：2008-01-23
Applicant: OUTOTEC OYJ
Inventor： SACHAROW LILLI , MISSALLA MICHAEL , HILTUNEN PEKKA , STURM PETER , REEB BERND , BLIGH ROGER , KLETT CORNELIS , STROEDER MICHAEL
Abstract: There are described a method and an apparatus for controlling the level and/or the inventory in a fluidized bed in a fluidized-bed tank, wherein a stream of solids is withdrawn from the fluidized-bed tank via a downer, the stream of solids is fluidized at the bottom of the downer by supplying a conveying gas flow and is conveyed to the top through a riser branching off from the downer. The size of the stream of solids conveyed through the riser is varied by the variable supply of the conveying gas, wherein the level of the solids or the solids inventory in the solids tank is used as a control variable and the volume flow rate of the conveying gas is used as an actuating variable of a control circuit.
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