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1. 发明申请

WO1996023741A1 METHOD AND APPARATUS FOR CONTINUOUS REFRACTORYLESS CALCINING OF GYPSUM 审中-公开
标题翻译：连续无菌计算的方法和装置
公开(公告)号：WO1996023741A1
公开(公告)日：1996-08-08
申请号：PCT/US1996001631
申请日：1996-02-01
申请人： UNITED STATES GYPSUM COMPANY
发明人： UNITED STATES GYPSUM COMPANY , ROWLAND, George, E. , CLOUD, Michael, L. , MILLIGAN, Daniel, J.
IPC分类号： C04B11/028
CPC分类号： F28D7/024 , B01J6/001 , B01J19/18 , B01J2219/00063 , B01J2219/00083 , B01J2219/00155 , B01J2219/00157 , C04B11/0281
摘要： A method and apparatus is disclosed for the continuous calcining of gypsum material in a high-efficiency, refractoryless kettle preferably heated by a multiple series of separate immersion tube burner coils, each coil operating within a specific calcining zone inside the kettle. The lowest, i.e., initial, burner tube coil is formed with a low profile to permit use of a small initial gypsum charge, and hence, a quick kettle start-up cycle. That low profile initial burner design also helps keep the agitator motor's load at a minimum during cycle start-up. Due to the immersion tube burner coil construction, no refractory structure for the kettle is required. Also, no separate hot pit structure is required, as the kettle is used to merely hold the material being calcined and no residual heat is present. A relatively thin kettle can be constructed, as it needs only withstand relatively low operating temperatures. The kettle's staged, interiorly-disposed burner tube coils act to directly transfer burner tube heat to the kettle's contents, and the coils exhaust exteriorly of the kettle. The present calcining method and apparatus permit substantially improved tonnage output of calcined material, for a kettle of a given size. A modification to the present apparatus includes structure for recovering and recycling a portion of the spent burner gases, and also separate structure for forced aeration air, both preferably for introduction through the kettle bottom. One alternate embodiment concerns a differently-shaped kettle design. Another alternate embodiment concerns a modified kettle which uses a single immersion burner tube coil to provide the total heating of the kettle's contents, for use in certain calcining applications.
摘要翻译：公开了一种方法和装置，其用于在高效率，无温度的釜中连续煅烧石膏材料，优选由多系列分开的浸入管燃烧器线圈加热，每个线圈在壶内的特定煅烧区域内操作。最低的，即初始的燃烧器管线圈形成为低轮廓，以允许使用小的初始石膏装料，因此使用快速水壶启动循环。这种低调的初始燃烧器设计还有助于在循环启动期间将搅拌器电机的负载保持在最小值。由于浸入管燃烧器线圈结构，不需要锅的耐火结构。另外，不需要单独的热坑结构，因为水壶仅用于保持正在煅烧的材料，并且不存在余热。可以构造相对薄的水壶，因为它只需要承受较低的工作温度。水壶的分级内部燃烧器管线圈用于将燃烧器管的热量直接传递到水壶的内容物，并且线圈在水壶的外部排出。现有的煅烧方法和装置允许对于给定尺寸的釜，煅烧材料的吨位输出显着提高。对本装置的改进包括用于回收和再循环一部分废燃烧器气体的结构，以及用于强制充气空气的分离结构，优选用于通过釜底引入。一个替代实施例涉及不同形状的壶设计。另一个替代实施例涉及一种改进的水壶，其使用单个浸入式燃烧器管线圈来提供釜的内容物的总体加热，用于某些煅烧应用。

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