公开(公告)号：US4191611A

公开(公告)日：1980-03-04

申请号：US938859

申请日：1978-09-01

申请人： John C. Rushing ,  William E. Smith ,  Henry L. King

发明人： John C. Rushing ,  William E. Smith ,  Henry L. King

IPC分类号： D21F1/32 ,  B08B3/12

CPC分类号： D21F1/32

摘要： An apparatus for cleaning an endless paper making felt continuously during the paper making process, and wherein the moving felt is passed through a cleaning bath, and ultrasonic vibrations are applied substantially uniformly across the entire width of the felt while the felt is immersed in the bath, to thereby achieve uniform cleaning of the felt and thus uniformity in the paper produced on the machine. The apparatus comprises an open, rectangular tank having a removable end wall, and a guide roll and ultrasonic transducers movably mounted in the tank, whereby the endless felt may be readily removed and/or replaced by removing the end wall, and lifting the guide roll and transducers, so that the felt may be slipped into the tank beneath the guide roll and transducers.

摘要翻译： 一种用于在造纸过程中连续地清洁循环造纸毛毯的装置，其中移动的毛毡通过清洗槽，并且超声波振动基本均匀地施加在毡的整个宽度上，同时将毛毡浸入浴中 ，从而实现毛毯的均匀清洁，从而实现机器上产生的纸张的均匀性。 该装置包括具有可拆卸端壁的敞开的矩形罐，以及可移动地安装在罐中的导向辊和超声波换能器，由此通过移除端壁可以容易地移除和/或更换环形毡，并且提升导向辊 和换能器，使得毛毡可以滑入导辊和换能器下方的罐中。

公开(公告)号：US4223000A

公开(公告)日：1980-09-16

申请号：US61297

申请日：1979-07-27

申请人： John L. Dewey ,  Charles E. Scott ,  John C. Rushing

发明人： John L. Dewey ,  Charles E. Scott ,  John C. Rushing

IPC分类号： C01F7/30

CPC分类号： C01F7/308 ,  C01P2004/51 ,  Y10S423/16

摘要： There is described a method for the decomposition of aluminum nitrate crystals to alumina comprising the steps of:(a) melting the aluminum nitrate crystals;(b) evaporating from the melted crystals in a once through evaporator at the boiling temperature of the mixture and for a time sufficient to remove water and associated nitric acid and to provide a fluid having an alumina concentration of at least about 18% by weight;(c) decomposing the product of step (b) at a temperature of between about 150.degree. and about 200.degree. C. and recovering the heat of condensation of the resultant vapors;(d) further decomposing the product of step (c) in a fluidized bed decomposer at a temperature of between about 300.degree. and about 400.degree. C. to reduce the residual nitrate concentration in the product to between about 5 and about 10 weight percent;(e) decomposing the product of step (d) in a fluidized bed decomposer at a temperature of between about 500.degree. and about 800.degree. C. to reduce the residual nitrate concentration in the product to below about 3 percent by weight; and(f) calcining the product of step (e) at a temperature of at least about 1000.degree. C.

摘要翻译： 描述了将硝酸铝晶体分解成氧化铝的方法，包括以下步骤：（a）熔融硝酸铝晶体; （b）在混合物的沸腾温度下在一次性蒸发器中从熔融的晶体中蒸发出足够的时间以除去水和相关的硝酸，并提供具有至少约18重量％的氧化铝浓度的流体; （c）在约150至约200℃的温度下分解步骤（b）的产物，并回收所得蒸气的冷凝热; （d）在流化床分解器中在约300℃至约400℃的温度下进一步分解步骤（c）的产物，以将产物中的残留硝酸盐浓度降低至约5至约10重量％; （e）在流化床分解器中在约500至约800℃的温度下分解步骤（d）的产物，以将产物中的残留硝酸盐浓度降低至低于约3重量％; 和（f）在至少约1000℃的温度下煅烧步骤（e）的产物。

公开(公告)号：US4246239A

公开(公告)日：1981-01-20

申请号：US61295

申请日：1979-07-27

申请人： John L. Dewey ,  Charles E. Scott ,  James F. Kane ,  Claud L. Stratton ,  John C. Rushing ,  Robert H. Spoonts

发明人： John L. Dewey ,  Charles E. Scott ,  James F. Kane ,  Claud L. Stratton ,  John C. Rushing ,  Robert H. Spoonts

IPC分类号： C01F7/24 ,  F02B75/02

CPC分类号： C01F7/24 ,  F02B2075/027 ,  Y10S423/16

摘要： Alumina values are extracted from clay by the steps of pelletizing into spherical particles, calcining the pellets in a fluidized bed reactor, extracting the clay in about 30-40% nitric acid, purifying the basic aluminum nitrate produced, crystallizing aluminum nitrate nonahydrate, decomposing the nonahydrate in at least three steps, calcining the produced alumina and reconstituting the NO.sub.x gases to nitric acid.

摘要翻译： 通过以下步骤从粘土中提取氧化铝值：将其造粒成球形颗粒，在流化床反应器中煅烧颗粒，在约30-40％硝酸中萃取粘土，纯化产生的碱式硝酸铝，结晶硝酸铝九水合物，分解 九水合物，至少三个步骤，煅烧所生产的氧化铝并将NOx气体重构成硝酸。

公开(公告)号：US4193842A

公开(公告)日：1980-03-18

申请号：US932122

申请日：1978-08-09

申请人： John C. Rushing

发明人： John C. Rushing

IPC分类号： B08B3/12 ,  D21F1/32

CPC分类号： D21F1/32 ,  B08B3/123

摘要： A method and apparatus for cleaning a paper making felt continuously during the paper making process, and wherein the moving felt is passed through a cleaning bath, and ultrasonic vibrations are applied substantially uniformly across the entire width of the felt while the felt is immersed in the bath, to thereby achieve uniform cleaning of the felt and thus uniformity in the paper produced on the machine. A circulation system for the bath is provided for continuously separating the dislodged fibrous residue therefrom, while retaining the chemicals and heat, and the apparatus includes provision for readily replacing the felt.

摘要翻译： 一种用于在造纸过程中连续地清洁造纸毛毯的方法和装置，其中移动的毛毡通过清洗槽，并且超声波振动基本均匀地施加在毡的整个宽度上，同时将毛毡浸入 浴，从而实现毛毯的均匀清洁，从而实现机器上产生的纸张的均匀性。 提供了用于浴的循环系统，用于在保持化学物质和热的同时连续分离脱落的纤维残余物，并且该装置包括用于容易地更换毛毯的设备。