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1.发明申请DEVICE AND PROCESS FOR FLUORINE RECOVERY FROM SMOKE AFTER PHOSPHORUS ABSORPTION BY HYDRATION IN KILN PROCESS FOR PRODUCTION OF PHOSPHORIC ACID 审中-公开通过在生产磷酸的窑过程中通过水化吸收磷吸收后的烟道中的氟回收的装置和方法公开(公告)号：US20160082388A1
公开(公告)日：2016-03-24
申请号：US14958811
申请日：2015-12-03
发明人： Yonghe HOU , Shifa WEI , Chenjuan WEI
CPC分类号： B01D53/68 , B01D53/77 , B01D2257/204 , B01D2257/2066 , C01B7/20 , Y02P20/154
摘要： A device and process for fluorine recovery from smoke after phosphorus absorption by hydration in KPA, wherein the device comprises a first-stage and second-stage fluorine absorption tower, which are both fluidised counter-current washing towers. The device according to the present invention has simple structure, low investment cost, high raw material utilization rate, and good fluorine recovery effects.
摘要翻译： 一种在KPA中通过水合磷吸收后从烟气中回收氟的装置和方法，其中该装置包括第一级和第二级氟吸收塔，它们都是流化的逆流洗涤塔。 本发明装置结构简单，投资成本低，原料利用率高，氟回收效果好。
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2.发明申请APPARATUS FOR PREPARING PHOSPHORIC ACID FROM FUME EXITING THE KILN IN A KILN PHOSPHORIC ACID PROCESS 有权用于在杀死磷酸过程中从灭鼠中排出磷酸的装置公开(公告)号：US20160152474A1
公开(公告)日：2016-06-02
申请号：US14958910
申请日：2015-12-03
发明人： Yonghe HOU , Shifa WEI , Chenjuan WEI
CPC分类号： C01B25/185 , B01D53/1406 , B01D53/40 , B01D2251/304 , B01D2252/103 , B01D2257/2027 , B01D2257/204 , B01D2257/55 , B01J19/24 , B01J19/2465 , B01J2219/00074 , B01J2219/00103 , B01J2219/00108 , B01J2219/0011 , B01J2219/00159 , B01J2219/24 , C01B25/20
摘要： Disclosed is an apparatus for preparing phosphoric acid from a fume exiting the kiln in a kiln phosphoric acid process, the apparatus comprises a hydration tower and an acid solution cyclical spraying system, a fume inlet of the fume exiting the kiln is disposed at a lower portion of the hydration tower, a fume outlet after hydration and absorption is disposed at the top, a spraying device is disposed in a cavity of the hydration tower above the fume inlet, a liquid inlet of the acid solution cyclical spraying system is disposed on a bottom of the hydration tower, a liquid outlet of the acid solution cyclical spraying system is connected to a liquid intake pipe of the spraying device. The present invention has the advantages of simple structure, reasonable layout, strong adaptability, high raw material utilisation rate, reduced contaminant emissions, and high recovery rate of phosphoric acid etc.
摘要翻译： 公开了一种在窑磷酸工艺中从排出窑的烟道制备磷酸的装置，该装置包括水化塔和酸溶液循环喷雾系统，排出窑的烟气的烟气入口设置在下部 的水合塔，在顶部设置水合吸收后的烟气出口，喷雾装置设置在烟气入口上方的水化塔的空腔中，酸溶液循环喷雾系统的液体入口设置在底部 的水化塔，酸溶液循环喷雾系统的液体出口连接到喷雾装置的液体进入管。 本发明结构简单，布局合理，适应性强，原料利用率高，污染物排放量减少，磷酸回收率高。
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3.发明申请公开(公告)号：US20160152475A1
公开(公告)日：2016-06-02
申请号：US14958914
申请日：2015-12-03
发明人： Yonghe HOU , Shifa WEI , Chenjuan WEI
CPC分类号： C01B25/20 , B01D1/16 , B01D53/68 , B01D2257/2027 , B01D2257/2066 , B01D2257/55 , B01D2258/0283 , Y02P20/154
摘要： Disclosed is a method for phosphorus absorption by hydration and fluorine recovery for a fume exiting a kiln in a kiln process for the production of phosphoric acid, comprising the following steps: a fume containing P2O5 and fluorine exiting a kiln is introduced into a hydration tower, the fume performs heat and mass transfer with the spraying liquid, with most of the phosphoric acid produced being absorbed into the spraying liquid; the phosphoric acid solution falling from the spraying finally enters the acid solution circulating and spraying system; the fume discharged from a fume outlet then passes through a phosphoric acid mist capturing tower and a mist removing and separating tower successively, such that the phosphoric acid mist entrained in the fume exiting the hydration tower is further captured.
摘要翻译： 公开了一种用于生产磷酸的窑炉中离开窑的烟气的水合和氟回收的磷吸收方法，包括以下步骤：将含有P2O5的烟和离开窑的氟引入水合塔中， 烟雾与喷射液体进行热和质量传递，大部分产生的磷酸被吸收到喷射液体中; 从喷雾出来的磷酸溶液最终进入酸液循环喷涂系统; 从排烟口排出的烟气依次通过磷酸雾捕获塔和除雾分离塔，从而进一步捕获携带在离开水合塔的烟气中的磷酸雾。
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公开(公告)号：US20160152472A1
公开(公告)日：2016-06-02
申请号：US14958893
申请日：2015-12-03
发明人： Yonghe HOU , Shifa WEI
IPC分类号： C01B25/18
CPC分类号： C01B25/185 , C01B25/12 , C01B25/22 , F27B7/20 , Y02P20/124
摘要： A method for mass production of phosphoric acid with a rotary kiln, comprising the following steps: pretreating raw materials a carbonaceous reductant; preparing the pre-treated carbonaceous reductant powder; then evenly mixing the carbonaceous reductant powder and the silica powder to obtain a cladding material; mixing the cores and the cladding material for cladding treatment, drying and solidifying same to obtain composite pellets; sending the composite pellets into a rotary kiln for a reduction reaction; sending the high-temperature slag balls exiting the rotary kiln to a cooling device for comprehensive utilisation; introducing the fume containing P2O5 and fluorine exiting the kiln into a hydration tower for absorbing phosphorus by hydration, then passing same through a phosphoric acid mist capturing tower and a mist removing and separating tower successively, and the fluorine-containing fume discharged from the mist removing and separating tower entering a subsequent fluorine recovery procedure.
摘要翻译： 一种用回转窑大量生产磷酸的方法，包括以下步骤：将原料预处理为碳质还原剂; 制备预处理的碳质还原剂粉末; 然后均匀混合碳质还原剂粉末和二氧化硅粉末以获得包层材料; 混合芯和包层材料进行包层处理，干燥固化，得到复合颗粒; 将复合粒料送入用于还原反应的回转窑中; 将离开回转窑的高温渣球送至冷却装置进行综合利用; 将含有P2O5的烟气和离开窑的氟气引入水合塔中，通过水合吸收磷，然后依次通过磷酸雾捕获塔和除雾分离塔，从除雾剂中排出的含氟烟雾 和分离塔进入随后的氟回收程序。
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5.发明申请ROTARY KILN FOR REDUCING PHOSPHATE ORE IN KILN PHOSPHORIC ACID PROCESS AND METHOD FOR SOLVING RING FORMING IN KILN TAIL IN KILN PHOSPHORIC ACID PROCESS 有权用于在磷酸工艺中还原磷酸盐的旋转窑以及用于在KILN磷酸过程中在牛尾中形成环的方法公开(公告)号：US20160153717A1
公开(公告)日：2016-06-02
申请号：US14958839
申请日：2015-12-03
发明人： Yonghe HOU , Shifa WEI , Pengsheng WANG , Jiabin WANG
CPC分类号： F27D25/00 , C01B25/185 , F27B7/28 , F27B7/32
摘要： A rotary kiln for reducing phosphate ore in kiln phosphoric acid process, comprising a kiln body, a kiln head box, a kiln tail box and a driving device for driving the rotation of the kiln body, wherein a fuel burner is provided at the kiln head, a feed pipe and an outlet flue connected to an external hydration tower are provided at the kiln tail box, the upper part of the kiln body is provided with no air pipe, the outlet flue is provided in the radius range of the kiln body with the axis of the rotary kiln as a centre, and the fume conveying direction in the outlet flue is substantially parallel to the axis direction of the rotary kiln or has an included angle of less than 45° thereto. The rotary kiln can effectively mitigate the phenomenon of ring forming in the kiln tail of the rotary kiln.
摘要翻译： 一种用于还原窑磷酸工艺中的磷酸盐矿的回转窑，其包括窑体，窑头箱，窑尾箱和用于驱动窑体旋转的驱动装置，其中在窑头设置燃料燃烧器 在窑尾箱设有与外部水化塔连接的进料管和出口烟道，窑体的上部没有空气管，出口烟道设置在窑体的半径范围内， 回转窑的轴线为中心，出口烟道中的烟气输送方向基本上平行于回转窑的轴线方向，或具有小于45°的夹角。 回转窑可有效缓解回转窑窑尾环形成现象。
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