公开(公告)号：US4363786A

公开(公告)日：1982-12-14

申请号：US189426

申请日：1980-09-22

申请人： Allen S. Adams ,  Michael B. Caesar

发明人： Allen S. Adams ,  Michael B. Caesar

IPC分类号： B01D19/02 ,  B01F1/00 ,  B01F7/00 ,  B01F13/02 ,  B01F15/00 ,  B01J16/00 ,  B01J19/18 ,  C01B25/22 ,  C01B25/223 ,  C01B25/226 ,  B01F3/12 ,  B01J8/10 ,  B01J19/26

CPC分类号： B01J19/1875 ,  B01D19/02 ,  B01F1/0005 ,  B01F1/0011 ,  B01F1/0038 ,  B01F13/0294 ,  B01J16/00 ,  C01B25/2204 ,  C01B25/223 ,  C01B25/226 ,  B01F15/00902 ,  B01F2003/0028 ,  B01F7/00341

摘要： An apparatus useful for the preparation of phosphoric acid from phosphate rock and a strong acid, comprises a closed vessel, a draft tube, means connected to the inner walls of said vessel amd mounting said draft tube in a vertical position within said vessel, an agitator positioned within said draft tube, a shaft for said agitator mounted axially of said vessel and extending into said draft tube, an inlet conduit to said vessel for introducing a feed slurry (e.g. phosphate rock and strong acid) into said vessel, said inlet conduit preferably having a lower end portion terminating within said draft tube and wherein, said draft tube has an outwardly flared lower skirt portion terminating in the bottom portion of said vessel, and preferably including a vent pipe connected to said inlet conduit to reduce foaming generated by the reaction in said vessel and to prevent blockage of said inlet conduit, and including means for applying air, under pressure, to the bottom of said reactor and/or under the bottom of said lower skirt portion, to prevent settling of undissolved solids.

摘要翻译： 用于从磷酸盐岩和强酸制备磷酸的装置包括封闭容器，引流管，连接到所述容器的内壁的装置，所述装置将所述引流管安装在所述容器内的垂直位置，搅拌器 定位在所述引流管内，用于所述搅拌器的轴安装在所述容器的轴向并延伸到所述引流管中，所述容器的入口管道用于将进料浆料（例如磷酸盐岩和强酸）引入所述容器中，所述入口导管优选 其具有终止于所述引流管内的下端部分，并且其中，所述引流管具有终止于所述容器的底部的向外扩张的下裙部，并且优选地包括连接到所述入口导管的通气管，以减少由反应产生的起泡 并且包括用于在压力下将空气施加到所述反应器的底部的装置和/或 在所述下裙部的底部下方，以防止未溶解的固体沉降。

公开(公告)号：US4258007A

公开(公告)日：1981-03-24

申请号：US866988

申请日：1978-01-05

申请人： F. Michael Gragg ,  Allen S. Adams

发明人： F. Michael Gragg ,  Allen S. Adams

IPC分类号： B01D19/02 ,  B01F1/00 ,  B01F13/02 ,  C01B25/22 ,  C01B25/223 ,  C01B25/226 ,  B01J19/18 ,  C01B25/222

CPC分类号： B01F1/00 ,  B01D19/02 ,  B01F1/0005 ,  B01F13/02 ,  C01B25/2204 ,  C01B25/223 ,  C01B25/226 ,  Y10T137/3003

摘要： A system for the preparation of phosphoric acid from phosphate rock and sulfuric acid, includes in combination a first reaction vessel containing a first slurry comprising calcium sulfate hemihydrate, monocalcium phosphate and phosphoric acid, a second reaction vessel containing a second slurry comprising calcium sulfate hemihydrate, circulation means including a draft tube disposed centrally in each of said vessels and an agitator positioned axially in each of said vessels within said draft tube, a first conduit interconnecting said first and second reaction vessels for conducting said first slurry from said first reaction vessel to said second reaction vessel, a second conduit interconnecting said vessels for conducting said second slurry from said second reaction vessel to said first reaction vessel, an inlet pipe for introducing phosphate rock and phosphoric acid to said first reaction vessel, and wherein a vent is connected to said inlet pipe to permit escape of gases and, thus, increasing the rate of flow of said phosphate rock and phosphoric acid to said first reaction vessel.

摘要翻译： 用于从磷酸盐岩和硫酸制备磷酸的系统包括组合含有包含硫酸钙半水合物，磷酸一钙和磷酸的第一浆料的第一反应容器，含有包含硫酸钙半水合物的第二浆料的第二反应容器， 循环装置，包括设置在每个所述容器中心的引流管和在所述引流管内的每个所述容器中轴向定位的搅拌器，将所述第一和第二反应容器互连的第一管道，用于将所述第一浆料从所述第一反应容器导入所述第一反应容器， 第二反应容器，将所述容器相互连接的第二导管，用于将所述第二浆料从所述第二反应容器引导到所述第一反应容器，用于将磷酸盐岩和磷酸引入所述第一反应容器的入口管，其中， 入口管允许气体逸出，因此， 使所述磷酸盐岩和磷酸的流量增加到所述第一反应容器。

公开(公告)号：US4258008A

公开(公告)日：1981-03-24

申请号：US866989

申请日：1978-01-05

申请人： Fredrick M. Gragg ,  John D. Ellis ,  Allen S. Adams

发明人： Fredrick M. Gragg ,  John D. Ellis ,  Allen S. Adams

IPC分类号： B01D19/02 ,  B01F1/00 ,  B01F13/02 ,  C01B25/22 ,  C01B25/223 ,  C01B25/226 ,  B01J19/18 ,  C01B25/222

CPC分类号： B01D19/02 ,  B01F1/00 ,  B01F1/0005 ,  B01F13/02 ,  C01B25/2204 ,  C01B25/223 ,  C01B25/226

摘要： A system for the preparation of phosphoric acid from phosphate rock and sulfuric acid, includes in combination a first reaction vessel containing a first slurry comprising calcium sulfate hemihydrate, monocalcium phosphate and phosphoric acid, a second reaction vessel containing a second slurry comprising calcium sulfate hemihydrate, circulation means including a draft tube disposed centrally in each of said vessels and an agitator positioned axially in each of said vessels within said draft tube, a first conduit interconnecting said first and second reaction vessels for conducting said first slurry from said first reaction vessel to said second reaction vessel, a second conduit interconnecting said vessels for conducting said second slurry from said second reaction vessel to said first reaction vessel, an inlet pipe for introducing phosphate rock and phosphoric acid to said first reaction vessel, said inlet pipe connected with the interior of said draft tube in said first vessel and wherein a vent is connected to said inlet pipe to permit escape of gases and, thus, increasing the rate of flow of said phosphate rock and phosphoric acid to said first reaction vessel.

摘要翻译： 用于从磷酸盐岩和硫酸制备磷酸的系统包括组合含有包含硫酸钙半水合物，磷酸一钙和磷酸的第一浆料的第一反应容器，含有包含硫酸钙半水合物的第二浆料的第二反应容器， 循环装置，包括设置在每个所述容器中心的引流管和在所述引流管内的每个所述容器中轴向定位的搅拌器，将所述第一和第二反应容器互连的第一管道，用于将所述第一浆料从所述第一反应容器导入所述第一反应容器， 第二反应容器，将所述容器相互连接的第二管道，用于将所述第二浆料从所述第二反应容器引导到所述第一反应容器，用于将磷酸盐岩和磷酸引入所述第一反应容器的入口管，所述入口管与 所述导管在所述第一容器中，w 这里，排气口连接到所述入口管，以允许气体逸出，因此提高所述磷酸盐岩和磷酸流向所述第一反应容器的速率。