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1. 发明公开

US20240384933A1 ROTARY FURNACE DIRECTIONAL FLUID CONDUIT HEAT CONTROL SYSTEM 审中-公开
公开(公告)号：US20240384933A1
公开(公告)日：2024-11-21
申请号：US18667053
申请日：2024-05-17
申请人： GPRE IP, LLC
发明人： John M. Peterman
IPC分类号： F27B7/36 , F27B7/10 , F27D19/00
CPC分类号： F27B7/362 , F27B7/10 , F27B2007/365 , F27D2019/0003 , F27D2019/0018 , F27D2019/0068
摘要： A directional fluid heat control system for a high temperature kiln with a process zone. The system includes two rigid, coaxially aligned tubes positioned in the kiln. One tube rotates inside the other. One tube has a series of longitudinal openings, while the other has a series of helically arranged openings. Rotating one tube selectively aligns an opening from that tube with an opening in the other. Further rotation aligns different such pairs of openings with different longitudinal orientations in the kiln. The aligned openings release pressurized fluid from the inner tube into desired locations in the kiln's process zone.

2. 发明公开

US20230243586A1 PELLET FLUE GAS CIRCULATION AND WASTE HEAT UTILIZATION PROCESS AND SYSTEM THEREOF 审中-公开
公开(公告)号：US20230243586A1
公开(公告)日：2023-08-03
申请号：US18102107
申请日：2023-01-27
申请人： Institute of Process Engineering, Chinese Academy of Sciences
发明人： Tingyu ZHU , Wenqing XU , Jun XIE , Chaoqun LI , Yixi WANG
IPC分类号： F27B7/36 , F27D17/00 , F27D15/02
CPC分类号： F27B7/362 , F27D17/008 , F27D15/02 , F27D17/004 , F27B2007/365
摘要： The present application discloses a pellet flue gas circulation and waste heat utilization process and a system thereof, which relates to the technical field of flue gas treatment. The system includes a grate, a rotary kiln, an annular cooler, and ducts connecting each part. On the basis of not changing the existing process a flue gas circulation unit and intelligent control equipment are arranged additionally in the present application. The process is simple, and not only can ensure the parameter stability of the production system such as temperature, gas flow or gas pressure, but also can make full use of the low and medium temperature flue gas components and the waste heat, so as to achieve net zero waste gas discharging, energy saving and emission reduction.

3. 发明公开

US20230152037A1 CEMENT-MANUFACTURING PLANT AND PROCESS FOR PRODUCING CEMENT CLINKER 审中-公开
公开(公告)号：US20230152037A1
公开(公告)日：2023-05-18
申请号：US17922946
申请日：2021-04-30
申请人： thyssenkrupp Industrial Solutions AG
发明人： Anna Ivanova DINKOVA , Jost LEMKE , Karl LAMPE , Eike WILLMS
IPC分类号： F27B7/42 , F27B7/36 , F27D19/00 , C04B7/43 , C04B7/44 , C04B7/47
CPC分类号： F27B7/42 , F27B7/36 , F27D19/00 , C04B7/432 , C04B7/434 , C04B7/4476 , C04B7/47 , F27M2003/03 , F27D2019/0003
摘要： A cement production plant may include a preheater for preheating raw meal, a calciner for calcining the preheated raw meal, and a furnace with a furnace burner for firing the raw meal to form cement clinker. The furnace has a combustion gas inlet for admitting a combustion gas with an oxygen content of 30% to 75% into the furnace. The cement production plant may also include a cooler for cooling the cement clinker. The calciner and the furnace each have at least one respective fuel inlet for admitting at least one fuel into the calciner and the furnace. The calciner and the furnace each have at least one respective inert gas inlet for respectively admitting inert gas into the calciner and the furnace.

4. 发明授权

US10527280B2 High organic concurrent decoating kiln 有权
公开(公告)号：US10527280B2
公开(公告)日：2020-01-07
申请号：US15307708
申请日：2015-05-22
申请人： NOVELIS INC.
发明人： Edwin L. Rauch
IPC分类号： F27B7/36 , F23G5/027 , F27D7/02 , F27D17/00 , B08B7/00 , F23G5/20
摘要： A high organic concurrent decoating kiln includes a low-oxygen zone and a high-oxygen zone. The disclosed kiln allows a gas low in free oxygen to be used in the initial stages of decoating, while a gas higher in free oxygen can be used in the final stages. The total amount of free oxygen used throughout the kiln, in particular at the upstream portion of the kiln, is kept low. Exhaust gas can be recirculated for use in a burner-fired chamber that provides the initial low-oxygen gas to the kiln.

5. 发明授权

US10287523B2 Coal deactivation processing device 有权
公开(公告)号：US10287523B2
公开(公告)日：2019-05-14
申请号：US15038600
申请日：2014-11-12
申请人： MITSUBISHI HEAVY INDUSTRIES, LTD.
发明人： Keiichi Nakagawa , Setsuo Omoto
IPC分类号： C10L5/04 , C10L9/00 , C10L9/08 , F27B7/36 , F27B7/32 , C10L9/12 , F27D9/00 , F27B7/38 , F27B7/33
摘要： A coal deactivation processing device includes: a rotary kiln body provided rotatably into which coal and a processing gas are supplied; and a feed pipe provided so as to be able to rotate along with the rotary kiln body, extending along a lengthwise direction of the rotary kiln body, and having a coolant flowing therein. A pair of blades is provided on an outer circumferential section of the feed pipe and protrudes in a radial direction. The feed pipe and the pair of blades are arranged so as to pass through an accumulated coal layer of the coal within the rotary kiln body upon rotation of the rotary kiln body, and such that an angle formed by a tangent of a path along which the central axis of the feed pipe passes and the bisector of the pair of blades is from 0 to 40 degrees.

6. 发明授权

US10280114B2 Direct-fired inclined counterflow rotary kilns and use thereof 有权
公开(公告)号：US10280114B2
公开(公告)日：2019-05-07
申请号：US15539910
申请日：2015-12-24
申请人： L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
发明人： Bernard Labegorre , Carlo Renna , Remi Tsiava , Sergio Fernandes
IPC分类号： F27B7/12 , F27B7/00 , C04B7/44 , C04B7/36 , F23G5/20 , F27B7/34 , F27B7/36 , C04B2/10 , F27B7/14 , F27B7/33 , F27B7/38
摘要： Method of operating a long direct-fired inclined counterflow rotary kiln for the thermal treatment of material and counterflow rotary kiln adapted for same, whereby material to be treated is introduced into the kiln at the inlet end and treated material is evacuated from the kiln at the outlet end, whereby a main combustion zone extends inside the kiln over a distance of ¼ to ⅓ of the internal length Lint of the kiln, whereby a supplementary combustion zone in which supplementary combustion takes place with an oxygen-rich oxidant extends inside the kiln over a distance from the inlet end of at most ¼ of the internal length Lint, and whereby no combustion takes place in a heat exchange zone located between the main combustion zone and the supplementary combustion zone.

7. 发明授权

US10260808B2 Carbon dioxide production 有权
公开(公告)号：US10260808B2
公开(公告)日：2019-04-16
申请号：US15370267
申请日：2016-12-06
申请人： Clive R. Stamp
发明人： Clive R. Stamp
IPC分类号： F27B7/10 , G21D9/00 , C04B2/10 , F27B15/00 , C01B3/02 , C10G2/00 , F27B7/36 , F27B15/14 , G21C1/07 , C01B32/50
摘要： Apparatus for the production of carbon dioxide from limestone includes a nuclear reactor (10) for generating heat and a rotary kiln (12). The rotary kiln (12) has an inlet (28) for the introduction of limestone and an outlet (30) for the release of carbon dioxide. A heat transfer arrangement is provided for transferring heat from the nuclear reactor (10) to the interior of the rotary kiln (12). The heat transfer arrangement includes feed and return primary conduits (17,18) for passing a heat transfer fluid (14) through the nuclear reactor (10) so that heat may be extracted from the nuclear reactor (10) for transfer to the interior of the rotary kiln (12). Limestone in the rotary kiln (12) is thereby heated to a temperature sufficient for the release of carbon dioxide.

8. 发明申请

US20190093017A1 Material Heating Device 审中-公开
公开(公告)号：US20190093017A1
公开(公告)日：2019-03-28
申请号：US16185424
申请日：2018-11-09
申请人： Shuhong ZHU
发明人： Shuhong ZHU
IPC分类号： C10B5/10 , F27B7/14 , F27B7/20 , F27B7/34 , F27B7/36 , F27B7/42 , C10B27/06 , C10B41/00 , C10B47/30 , C10B57/14
摘要： A material heating device comprises a rotary kiln, a plurality of heat exchange tubes, a hot air hood, a high-temperature gas input mechanism, an exhaust-gas collecting chamber, and an exhaust-gas output pipeline. The rotary kiln is provided with a material feed end and a material discharge end. The heat exchange tubes are in the rotary kiln. The hot air hood is outside the rotary kiln. The air inlet ends of the heat exchange tubes communicate with the hot air hood, and the air outlet ends of the heat exchange tubes communicate with the exhaust-gas collecting chamber. The exhaust-gas collecting chamber communicates with the exhaust-gas output pipeline. The hot air hood communicates with the high-temperature gas input mechanism, and the cavity between the heat exchange tubes and the heat insulation layer of the rotary kiln is a material channel. The heat exchange tubes are directly in contact with the material.

9. 发明申请

US20180017328A1 ROTATING FURNACE INERTING 审中-公开
公开(公告)号：US20180017328A1
公开(公告)日：2018-01-18
申请号：US15207686
申请日：2016-07-12
申请人： Air Liquide Industrial U.S. LP
发明人： Stewart C. JEPSON
IPC分类号： F27D3/16 , F27B7/10 , F27B7/34 , F27D7/02 , F27B7/06 , F27B7/36 , F27B7/20
CPC分类号： F27D3/16 , F27B7/06 , F27B7/10 , F27B7/2083 , F27B7/34 , F27B7/362 , F27B2007/367 , F27D7/02 , F27D2003/167 , F27D2007/023
摘要： A gas inerting system and method is provided. This system includes a rotary melting furnace with a furnace barrel, a burner, and a charge of metal to be melted; and an injection manifold with a plurality of injection orifices. The burner is configured to produce a flame directed into the furnace barrel, and the plurality of injection orifices are configured to disperse inert gas streams into the furnace barrel, into an inerting region between the burner flame and the charge of aluminum. The metal to be melted may be aluminum. The method of inerting includes rotating the rotary furnace and introducing heat into the furnace barrel by generating the flame, thereby beginning a melt cycle, then introducing the inert gas streams into an inlet to the injection manifold, thereby directing the inert gas streams through the injection orifices and into the inerting region, after a predetermined condition has been met.

10. 发明授权

US08876525B2 Method and apparatus for removing dust particulates from preheated particulate material 有权
标题翻译：用于从预热的颗粒材料中除去灰尘颗粒的方法和装置
公开(公告)号：US08876525B2
公开(公告)日：2014-11-04
申请号：US13002808
申请日：2009-07-08
申请人： Charles Euston
发明人： Charles Euston
IPC分类号： F27B7/36 , F27B1/00 , C04B2/12
CPC分类号： F27B1/005 , C04B2/12
摘要： A method for removing sulfur containing dust particles from particulate material exiting a material preheater in which the particulate material is heated by kiln off gases may include a number of steps. Off gases from the kiln are directed through a gas conduit to the preheater to preheat particulate material traveling through the preheater in a direction countercurrent to the direction of off gas flow through the preheater. Material exiting the preheater is directed to a material bypass conduit that is separated from the gas conduit and is flow connected to a material inlet to the kiln. A stripping gas is directed through the conduit to entrain dust particles in the preheated material and to carry said dust particles away from the preheated material.
摘要翻译：从颗粒材料离开材料预热器的颗粒材料中除去含硫灰尘颗粒的方法，其中颗粒材料通过窑尾气体加热可包括多个步骤。来自窑的废气通过气体管道被引导到预热器，以预热通过预热器行进的颗粒物质沿与通过预热器的气流流动方向相反的方向。离开预热器的材料被引导到与气体导管分离并且连接到窑的材料入口的材料旁路管道。汽提气体被引导通过管道，以将灰尘颗粒夹带在预热的材料中并将所述灰尘颗粒从预热的材料上运送。

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