公开(公告)号：US4375386A

公开(公告)日：1983-03-01

申请号：US261485

申请日：1981-05-07

申请人： Donald M. Windham

发明人： Donald M. Windham

IPC分类号： B01D1/30 ,  B01D3/10 ,  C01B25/234 ,  B01D1/00

CPC分类号： B01D3/10 ,  B01D1/305 ,  C01B25/2346

摘要： A vacuum evaporator is provided with an integral cyclonic-type entrainment separator at the top of the evaporator vapor body which comprises a helical spin plate for imparting a centrifugal action to the vapor and entrained liquid rising from the boiling liquid in the flash chamber. Liquid entrainment is deposited on the vertical wall of the evaporator and flows downward countercurrent to vapor flow into a collecting trough, from which it is discharged into a pipe that returns it to the boiling liquid.

摘要翻译： 真空蒸发器在蒸发器蒸气体的顶部设置有一体式气旋式夹带分离器，该分离器包括螺旋旋转板，用于对从闪蒸室中的沸腾液体起升的蒸气和夹带液体进行离心作用。 液体夹带沉积在蒸发器的垂直壁上，并向下逆流流向蒸汽流进入收集槽，从该收集槽中将其排放到将其返回沸腾液体的管道中。

公开(公告)号：US3780161A

公开(公告)日：1973-12-18

申请号：US3780161D

申请日：1971-02-02

申请人： AZOTE & PROD CHIM

发明人： BERQUIN Y ,  DUVAL P ,  ALLETON J

IPC分类号： B01D1/16 ,  C01B25/234 ,  C01B25/24 ,  C01B25/28 ,  C01B25/40 ,  C05B19/00 ,  C01B15/16 ,  C01B25/16 ,  C01B25/26

CPC分类号： C01B25/405 ,  B01D1/16 ,  C01B25/2346 ,  C01B25/24 ,  C01B25/28 ,  C05B19/00 ,  C05C1/02

摘要： TO CONCENTRATE SOLUTIONS SUCH AS PHOSPHORIC ACID, DROPLETS THEREOF ARE ENTRAINED IN A HIGH VELOCITY ASCENDING CURRENT OF HOT GAS SUCH AS FLUE GAS, AIR, ETC., OPTIONALLY CONTAINING A REACTANT GAS SUCH AS AMMONIA. THE ENTRAINED DROPLETS ARE PASSED TO A DECELERATING ZONE WHERE THE VELOCITY PROFILE OF THE GAS IS SUCH THAT CONTINUOUS CIRCULATION OF DROPLETS IS POSSIBLE, WITH DROPLETS PROXIMATE THE AXIS OF SAID ZONE BEING ENTRAINED UPWARDLY AND DROPLETS PROXIMATE THE SIDE OF SAID ZONE FALLING DOWNWARDLY WHERE THEY CAN BE RE-ENTRAINED BY ENTERING HOT GAS. IN THIS MANNER IT IS POSSIBLE TO RECIRCULATE THE DROPLETS AND CONTROL THE EXTENT OF CONCENTRATION WITHIN A REASONABLY DIMENSIONED APPARATUS AND WITHOUT ANY DIFFICULT SEPARATION PROBLEM BECAUSE OF EXCESSIVELY SMALL DROPS.

公开(公告)号：US3314757A

公开(公告)日：1967-04-18

申请号：US26242063

申请日：1963-03-04

申请人： KESTNER APP EVAPORATEURS

发明人： RENE MYON

IPC分类号： B01D1/06 ,  B01D3/10 ,  C01B25/234

CPC分类号： B01D3/10 ,  B01D1/06 ,  C01B25/2346 ,  Y10S159/15

公开(公告)号：US2747659A

公开(公告)日：1956-05-29

申请号：US19851750

申请日：1950-12-01

申请人： PANMETALS AND PROCESSES INC

发明人： ANDRE DELRUELLE

IPC分类号： C01B25/234

CPC分类号： C01B25/2346

公开(公告)号：US20180305234A1

公开(公告)日：2018-10-25

申请号：US15957339

申请日：2018-04-19

申请人： Ecolab USA Inc.

发明人： Sankar Bhattacharja ,  Jasbir Gill ,  Yuhuan Jin ,  Paul Wiatr

IPC分类号： C02F5/10 ,  C01B25/234 ,  C02F1/06 ,  C02F1/04

CPC分类号： C02F5/10 ,  C01B25/222 ,  C01B25/2346 ,  C01B25/32 ,  C02F1/042 ,  C02F1/06 ,  C02F5/14 ,  C02F2101/101 ,  C02F2303/22 ,  C23F14/02

摘要： Disclosed herein are compositions and methods of mitigating scale in phosphoric acid and ammonium phosphate plants. Scale-mitigating compositions of the invention can be added to phosphoric acid before or during the concentration in the evaporator cycle of a phosphoric acid plant. The compositions retard the formation of scale on surfaces in contact with the phosphoric acid, and thus time between cleaning is extended and plant productivity increased. Further, the scale that forms is softer and more easily cleaned from surfaces, reducing non-operation time of the plant and/or evaporator. Methods of mitigating scale formation in phosphoric acid production and phosphoric acid handling plants are disclosed. In the methods, scales accumulate more slowly and are softer, more tractable, and more easily cleaned from surfaces to which they adhere.

公开(公告)号：US4296082A

公开(公告)日：1981-10-20

申请号：US028680

申请日：1979-04-10

申请人： Edward J. Lowe ,  Michael W. Minshall ,  Arthur Wilson

发明人： Edward J. Lowe ,  Michael W. Minshall ,  Arthur Wilson

IPC分类号： B01D1/00 ,  C01B25/234 ,  C01B25/24 ,  C01B25/26 ,  C01B25/38 ,  C01B25/40 ,  C01B25/16

CPC分类号： B01D1/0017 ,  B01D1/00 ,  C01B25/234 ,  C01B25/2346 ,  C01B25/24 ,  C01B25/26 ,  C01B25/38

摘要： Wet process phosphoric acid is heated by passing alternating current through the acid, preferably in carbon apparatus to concentrations above 76% P.sub.2 O.sub.5 and preferably temperatures above 500.degree. C. to remove sulphate and fluoride and convert organic and basic impurities into a filterable precipitate; the acid is separated from the precipitate preferably after dilution with water to provide a high purity crystallizable product.

摘要翻译： 通过使交流电流通过酸，优选在碳装置中将浓度过高的磷酸加热至浓度高于76％的P2O5，优选温度高于500℃以除去硫酸盐和氟化物，并将有机和碱性杂质转化成可过滤的沉淀物; 优选在用水稀释后将酸从沉淀物中分离出来，得到高纯度可结晶产物。

公开(公告)号：US3970511A

公开(公告)日：1976-07-20

申请号：US425922

申请日：1973-12-18

申请人： Roger M. Rat ,  Francois A. Pollozec ,  Jean J. Patouillet

发明人： Roger M. Rat ,  Francois A. Pollozec ,  Jean J. Patouillet

IPC分类号： B01D1/14 ,  B01D1/22 ,  C01B17/88 ,  C01B25/234 ,  B01D1/02 ,  C01B17/90

CPC分类号： B01D1/22 ,  B01D1/14 ,  C01B17/88 ,  C01B25/2346 ,  Y10S159/06 ,  Y10S159/15 ,  Y10S159/19

摘要： Dilute solutions of corrosive products, such as sulphuric or phosphoric acid, are concentrated by pre-concentrating the dilute solution and then introducing the pre-concentrated solution into a tunnel in which it flows in a thin layer over successive cascades while being heated, preferably by indirect radiant heating. An installation for carrying out the process is also described.

摘要翻译： 腐蚀性产物如硫酸或磷酸的稀释溶液通过预先浓缩稀溶液浓缩，然后将预浓缩溶液引入隧道，在其中在连续级联中在薄层中流动的通道被加热，优选通过 间接辐射加热。 还描述了用于执行该过程的安装。

公开(公告)号：US3385343A

公开(公告)日：1968-05-28

申请号：US52718266

申请日：1966-02-14

申请人： WHITING CORP

发明人： RUSHTON WILLIAM E

IPC分类号： C01B25/234

CPC分类号： C01B25/2346 ,  Y10S159/25 ,  Y10S159/901

公开(公告)号：US3314756A

公开(公告)日：1967-04-18

申请号：US26241963

申请日：1963-03-04

申请人： KESTNER APP EVAPORATEURS

发明人： RENE MYON

IPC分类号： B01D1/06 ,  C01B25/234

CPC分类号： B01D1/06 ,  C01B25/2346

公开(公告)号：US20230399230A1

公开(公告)日：2023-12-14

申请号：US18209219

申请日：2023-06-13

申请人： GUIZHOU BATIAN ECOTYPIC ENGINEERING CO., LTD. ,  SHENZHEN BATIAN ECOTYPIC ENGINEERING CO., LTD.

发明人： Deming HUANG ,  Guojun ZHAO ,  Faan LIU ,  Jin FANG ,  Shiying HUANG ,  Jing CHENG ,  Lingyun ZHANG ,  Junqiang FENG ,  Jianqing HUA

IPC分类号： C01B25/37 ,  C01B25/234 ,  C05B17/00 ,  C05G5/12

CPC分类号： C01B25/375 ,  C01B25/2346 ,  C01P2006/80 ,  C05G5/12 ,  C05B17/00

摘要： Disclosed is a method for preparing iron phosphate and by-product fertilizer using ammonium phosphate. The granulation device for by-product fertilizer production comprises a housing having accommodation space which is divided from top to bottom into a granulation chamber, a material-screening chamber and a temporary material-storing chamber; a blowing component provided between the granulation chamber and the material-screening chamber; and a vibrating screen which is able to vertically reciprocated provided between the material-screening chamber and the temporary material-storing chamber which is connected to a discharge pipe, wherein the upper end of the housing is provided with a detachable cover having multiple spraying devices for spraying the molten material into the housing and connected to an exhaust pipe. The blowing component comprises multiple staggered and interconnected distribution pipes the upper end of which is connected to multiple blasting pipes and a side of which is connected to an intake pipe.