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1.发明授权公开(公告)号：US09776868B2
公开(公告)日：2017-10-03
申请号：US14958910
申请日：2015-12-03
发明人： Yonghe Hou , Shifa Wei , Chenjuan Wei
IPC分类号： B01J19/00 , B01J19/24 , C01B25/00 , C01B25/16 , C01B25/18 , C01B25/20 , B01D53/00 , B01D53/14 , B01D53/32 , B01D53/34 , B01D53/38 , B01D53/40
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 utilization rate, reduced contaminant emissions, and high recovery rate of phosphoric acid etc.
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2.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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4.发明授权公开(公告)号：US10435300B2
公开(公告)日：2019-10-08
申请号：US14958903
申请日：2015-12-03
发明人： Yonghe Hou , Jiabin Wang , Pengsheng Wang
摘要： Disclosed is a composite pellet used as a raw material in a kiln process for the production of phosphoric acid, which is of a core-shell structure with an inner ball encapsulated with a shell, the inner ball mainly consists of a inner ball material and a binding agent, and the shell mainly consists of a cladding material and a binding agent; the inner ball material mainly consists of a carbonaceous reductant powder, and phosphate ore powder and silica powder, the inner ball is combined with the shell through the binding agent to form the core-shell shaped structure. The preparation of the composite pellets comprises the steps of preparing the inner ball, preparing the cladding material, forming, drying and solidifying composite green pellets etc. The composite pellets prepared by the present invention have a smaller range of formulation fluctuation, more stable quality, higher strength and better performance.
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公开(公告)号：US09982947B2
公开(公告)日：2018-05-29
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 center, 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.
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6.发明申请RAW MATERIAL OF COMPOSITE PELLETS USED IN KILN PHOSPHORIC ACID PROCESS, AND FORMING METHOD THEREFOR 审中-公开在磷酸工艺中使用的复合颗粒的原料及其形成方法公开(公告)号：US20160152473A1
公开(公告)日：2016-06-02
申请号：US14958903
申请日：2015-12-03
发明人： Yonghe HOU , Jiabin WANG , Pengsheng WANG
CPC分类号： C01B25/185 , B05D1/00 , B05D3/002 , B05D3/12 , B05D2203/00 , B05D2350/10 , C01B25/18
摘要： Disclosed is a composite pellet used as a raw material in a kiln process for the production of phosphoric acid, which is of a core-shell structure with an inner ball encapsulated with a shell, the inner ball mainly consists of a inner ball material and a binding agent, and the shell mainly consists of a cladding material and a binding agent; the inner ball material mainly consists of a carbonaceous reductant powder, and phosphate ore powder and silica powder, the inner ball is combined with the shell through the binding agent to form the core-shell shaped structure. The preparation of the composite pellets comprises the steps of preparing the inner ball, preparing the cladding material, forming, drying and solidifying composite green pellets etc. The composite pellets prepared by the present invention have a smaller range of formulation fluctuation, more stable quality, higher strength and better performance.
摘要翻译： 公开了一种用于生产磷酸的窑工艺中的原料的复合颗粒，其是具有用壳包裹的内球的核 - 壳结构，内球主要由内球材料和 结合剂，壳主要由包层材料和粘合剂组成; 内球材料主要由碳质还原剂粉末和磷酸盐矿石粉末和二氧化硅粉末组成，内球通过粘合剂与壳体结合形成核 - 壳形结构。 复合颗粒的制备包括制备内球，制备包层材料，形成，干燥和固化复合生球团矿等的步骤。由本发明制备的复合颗粒具有较小的制剂波动范围，更稳定的质量， 强度更高，性能更好。
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7.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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公开(公告)号：US10744512B2
公开(公告)日：2020-08-18
申请号：US14958899
申请日：2015-12-03
发明人： Yonghe Hou , Jun Wu , Shihua Liu
摘要： Disclosed is a raw material pre-treatment process system suitable for a kiln phosphoric acid process, comprising a carbonaceous reductant, a phosphate ore and a silica pre-treatment system which are independent from one another, outlets of the carbonaceous reductant, phosphate ore pre-treatment system and silica pre-treatment system are all connected to an inner pellet material mixing device via a first delivery device, and outlets of the carbonaceous reductant and the silica pre-treatment system are both additionally connected to a shell material mixing device via a second delivery device. Also disclosed is a raw material pre-treatment process suitable for a kiln phosphoric acid process, i.e. pre-treating carbonaceous reductant, phosphate ore and silica respectively, feeding the carbonaceous reductant powder, phosphate ore powder and silica powder into the inner ball material mixing device for pelletizing, and feeding the carbonaceous reductant and silica into the shell material mixing device for mixing.
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9.发明申请METHOD OF COMPREHENSIVELY UTILIZING HIGH-TEMPERATURE SLAG BALLS EXITING ROTARY KILN IN KILN PROCESS FOR PRODUCING PHOSPHORIC ACID, AND PROCESS SYSTEM THEREOF 审中-公开综合利用生产磷酸的生产过程中的高温滑石出口旋转窑的综合方法及其工艺系统公开(公告)号：US20160084575A1
公开(公告)日：2016-03-24
申请号：US14958884
申请日：2015-12-03
发明人： Yonghe HOU , Jiabin WANG , Shenghui LEI , Jing LI
CPC分类号： F27B7/383 , C01B25/20 , F27B7/38 , F27D15/0206 , F27D2009/007 , Y02P20/124
摘要： A method and process system of comprehensively utilizing high-temperature slag balls exiting a rotary kiln in a kiln process for producing phosphoric acid, comprising a rotary kiln, a cooling device and a dryer for composite green pellets in a kiln process for producing phosphoric acid, wherein the cooling device comprises at least two cooling stages; the high-temperature slag balls are first conveyed to the cooling device, then the cooling device carries slag balls successively to multiple cooling stages by the movement of a trolley, each cooling stage introduces cold air for cooling, a part of the hot air after cooling is sent to the cavity of the rotary kiln, and the other part thereof is sent to the dryer for composite green pellets in the kiln process for producing phosphoric acid for drying.
摘要翻译： 在生产磷酸的窑工艺中综合利用离开回转窑的高温渣球的方法和工艺系统，包括回转窑，冷却装置和用于生产磷酸的窑炉中复合生料颗粒的干燥器， 其中所述冷却装置包括至少两个冷却级; 首先将高温渣球输送到冷却装置，然后冷却装置通过手推车的运动将渣球连续运送到多个冷却阶段，每个冷却段引入冷空气冷却，一部分冷却后的热空气 被送到回转窑的空腔中，另一部分被送到用于生产用于干燥的磷酸的窑工艺中的复合生料颗粒的干燥器。
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10.发明申请RAW MATERIAL PRE-TREATMENT METHOD AND RAW MATERIAL PRE-TREATMENT PROCESS SYSTEM SUITABLE FOR KILN PHOSPHORIC ACID PROCESS 审中-公开原材料预处理方法和原料预处理方法适用于磷酸工艺的原料公开(公告)号：US20160083255A1
公开(公告)日：2016-03-24
申请号：US14958899
申请日：2015-12-03
发明人： Yonghe HOU , Jun WU , Shihua LIU
摘要： Disclosed is a raw material pre-treatment process system suitable for a kiln phosphoric acid process, comprising a carbonaceous reductant, a phosphate ore and a silica pre-treatment system which are independent from one another, outlets of the carbonaceous reductant, phosphate ore pre-treatment system and silica pre-treatment system are all connected to an inner pellet material mixing device via a first delivery device, and outlets of the carbonaceous reductant and the silica pre-treatment system are both additionally connected to a shell material mixing device via a second delivery device. Also disclosed is a raw material pre-treatment process suitable for a kiln phosphoric acid process, i.e. pre-treating carbonaceous reductant, phosphate ore and silica respectively, feeding the carbonaceous reductant powder, phosphate ore powder and silica powder into the inner ball material mixing device for pelletizing, and feeding the carbonaceous reductant and silica into the shell material mixing device for mixing.
摘要翻译： 公开了一种适用于窑磷酸工艺的原料预处理工艺系统，其包括彼此独立的碳质还原剂，磷矿石和二氧化硅预处理体系，碳质还原剂的出口， 处理系统和二氧化硅预处理系统都经由第一输送装置连接到内部颗粒材料混合装置，并且碳质还原剂和二氧化硅预处理系统的出口还经由第二种方法连接到壳材料混合装置 送货装置 还公开了适用于窑磷酸工艺的原料预处理方法，即分别预处理碳质还原剂，磷酸盐矿石和二氧化硅，将碳质还原剂粉末，磷酸盐矿石粉末和二氧化硅粉末进料到内部球料混合装置 用于造粒，并将碳质还原剂和二氧化硅进料到壳材料混合装置中进行混合。
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