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1. 发明专利

JPH07275681A STIRRING BLADE 失效
公开(公告)号：JPH07275681A
公开(公告)日：1995-10-24
申请号：JP5853195
申请日：1995-03-17
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： KAWAMURA SUNAO , HARADA KAZUNORI , MARUYAMA EIJI , MIZUSEKI YASUHIKO , SEKIDA KEISUKE
IPC分类号： B01F3/04 , B01F7/16 , B01F7/22
摘要： PURPOSE:To enhance stirring effect especially in a gas-liquid mixing stirrer by performing stirring with a stirring blade consisting of blades each having a recessed cross section toward a rotary direction and assymmetric in its cross section with respects to a horizontal axis so that the upper part of the cross section protrudes in the rotary direction as compared with the lower part thereof. CONSTITUTION:Stirring is performed with a stirring blade consisting of blades 8 each having a recessed cross section toward a rotary direction 7 and assymmetric in its cross section with respect to a horizontal axis to that the upper part of the cross section protrudes in the rotary direction as compared with the lower part thereof. That is, the air 12 blown in a stirring tank 1 from an air blowing-in port 3 raises through a liquid 13 and almost all of the air 12 impinges against the blades 8 to be sucked to the insides 11 of the recessed cross sections thereof to be strongly emitted into the liquid 13 resent in the outer peripheral parts 15 of the blades 8 by the centrifugal force generated by the rotation of the blades 8. As a result, the air 12 is uniformly dispersed into the liquid 13 and stirring effect is enhanced to a large extent as compared with a conventional stirring blade.

2. 发明专利

ES2193580T3 未知
公开(公告)号：ES2193580T3
公开(公告)日：2003-11-01
申请号：ES98954780
申请日：1998-11-20
申请人： HITACHI LTD
发明人： KINOSHITA TAKATOSHI , HARADA KAZUNORI , MOTOHIRO SEIJI
IPC分类号： C08G64/30 , B01F7/00 , B01F7/04 , B01F15/00 , C08G64/20 , C08G85/00
摘要： A process for producing polycarbonate designed to improve the quality of polycarbonate as a polymerization product polymer and reduce the investment and operating costs is provided. Polycarbonate is produced in two horizontal cylindrical agitation reactors provided with agitation blades successively extended through the vessel and partly with agitation blades having a screw function, as horizontally ganged together in series without any agitator center shaft, where the primary agitation reactor is a uniaxial horizontal agitation reactor with the agitation blades rotating at a low speed ranging from 1 rpm to 10 rpm, while keeping a clearance between the inner wall of the vessel ad the agitation blades in a range of 1 mm to 50 mm, and the secondary agitation reactor is a biaxial horizontal agitation reactor with agitation blades provided horizontally and in parallel, without any rotating center shaft, which conducts treatment by agitation at a low speed ranging from 1 rpm to 15 rpm.

3. 发明专利

DE69814643T2 未知
公开(公告)号：DE69814643T2
公开(公告)日：2004-03-25
申请号：DE69814643
申请日：1998-11-20
申请人： HITACHI LTD
发明人： KINOSHITA TAKATOSHI , HARADA KAZUNORI , MOTOHIRO SEIJI
IPC分类号： C08G64/30 , B01F7/00 , B01F7/04 , B01F15/00 , C08G64/20 , C08G85/00
摘要： A process for producing polycarbonate designed to improve the quality of polycarbonate as a polymerization product polymer and reduce the investment and operating costs is provided. Polycarbonate is produced in two horizontal cylindrical agitation reactors provided with agitation blades successively extended through the vessel and partly with agitation blades having a screw function, as horizontally ganged together in series without any agitator center shaft, where the primary agitation reactor is a uniaxial horizontal agitation reactor with the agitation blades rotating at a low speed ranging from 1 rpm to 10 rpm, while keeping a clearance between the inner wall of the vessel ad the agitation blades in a range of 1 mm to 50 mm, and the secondary agitation reactor is a biaxial horizontal agitation reactor with agitation blades provided horizontally and in parallel, without any rotating center shaft, which conducts treatment by agitation at a low speed ranging from 1 rpm to 15 rpm.

4. 发明专利

DE69814643D1 未知
公开(公告)号：DE69814643D1
公开(公告)日：2003-06-18
申请号：DE69814643
申请日：1998-11-20
申请人： HITACHI LTD
发明人： KINOSHITA TAKATOSHI , HARADA KAZUNORI , MOTOHIRO SEIJI
IPC分类号： C08G64/30 , B01F7/00 , B01F7/04 , B01F15/00 , C08G64/20 , C08G85/00
摘要： A process for producing polycarbonate designed to improve the quality of polycarbonate as a polymerization product polymer and reduce the investment and operating costs is provided. Polycarbonate is produced in two horizontal cylindrical agitation reactors provided with agitation blades successively extended through the vessel and partly with agitation blades having a screw function, as horizontally ganged together in series without any agitator center shaft, where the primary agitation reactor is a uniaxial horizontal agitation reactor with the agitation blades rotating at a low speed ranging from 1 rpm to 10 rpm, while keeping a clearance between the inner wall of the vessel ad the agitation blades in a range of 1 mm to 50 mm, and the secondary agitation reactor is a biaxial horizontal agitation reactor with agitation blades provided horizontally and in parallel, without any rotating center shaft, which conducts treatment by agitation at a low speed ranging from 1 rpm to 15 rpm.

5. 发明公开

EP1002820A4 METHOD AND DEVICE FOR MANUFACTURING POLYCARBONATE 有权
标题翻译：方法和设备制备聚碳酸酯
公开(公告)号：EP1002820A4
公开(公告)日：2000-10-18
申请号：EP98954780
申请日：1998-11-20
申请人： HITACHI LTD
发明人： KINOSHITA TAKATOSHI , HARADA KAZUNORI , MOTOHIRO SEIJI
IPC分类号： C08G64/30 , B01F7/00 , B01F7/04 , B01F15/00 , C08G64/20 , C08G85/00
CPC分类号： B01F7/00583 , B01F7/04 , B01F7/042 , B01F7/043 , B01F2215/0427 , B01F2215/0481 , B01F2215/0495 , C08G64/205 , C08G64/307
摘要： A method for manufacturing polycarbornate that improves the quality of polycarbonate polymer products and reduces equipment and operating costs. Two horizontally laid, lateral type, cylindrical agitation tanks that have no agitation center axis are connected together. These agitation tanks each have an agitating blade extending continuously in a container, with one part of the blade functioning as a screw. In a first tank, a one-shaft, lateral type agitating blade is installed which rotates at a low speed of 1 rpm to 10 rpm, with a gap of 1 mm to 50 mm between the inner wall of the container and the agitating blade. In a second tank, two-shaft agitating blades which have no rotation center axis and are horizontally and parallelly arranged rotate at a low speed of 1 rpm to 15 rpm.

6. 发明专利

JP2001294658A METHOD FOR PRODUCING POLYCARBONATE 失效
公开(公告)号：JP2001294658A
公开(公告)日：2001-10-23
申请号：JP2001109407
申请日：2001-04-09
申请人： HITACHI LTD
发明人： KINOSHITA TAKATOSHI , HARADA KAZUNORI , MOTOHIRO SEIJI
IPC分类号： C08G64/30
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a polycarbonate by which the quality of a polycarbonate polymerized polymer product is improved and the equipment and operating costs are reduced. SOLUTION: This method for producing the polycarbonate comprises connecting two connected and horizontally placed cylindrical agitated tanks provided with even a part of an agitating element having screw functions in the continuously connected agitating element in a vessel without an agitation central shaft, using a uniaxial horizontal agitated tank rotating the agitating element ensuring the gap between the inner wall of the vessel and the agitating element of 1-50 mm and performing agitating treatment at a low speed within the range of 1 to 10 rpm in the first tank and using a two-shaft agitating element installed horizontally and parallel without a rotation central shaft and carrying out the agitating treatment at a low agitation number of revolutions of 1 to 15 rpm in the second tank.

7. 发明专利

JPH0427423A AGITATION TANK 失效
公开(公告)号：JPH0427423A
公开(公告)日：1992-01-30
申请号：JP12908490
申请日：1990-05-21
申请人： HITACHI LTD
发明人： HARADA KAZUNORI , TAKADA TADASHI , KAWAMURA SUNAO , MARUYAMA EIJI , WATABE KENICHI
IPC分类号： B01F7/16
摘要： PURPOSE:To prevent decrease in the flow velocity of fluid at a tank wall which is discharged from an agitating element and to excellently mix the whole tank content by providing a projection having the straightening effect to the tank wall on a prolongation of the agitating element in an agitation tank provided with a rotary vane. CONSTITUTION:The ring-shaped projections 4 are provided on the prolongations of the agitating elements 3 at the inner wall of an agitation tank 1. The cross- sectional shape of the projection 4 is a triangle or the same whose side is curved. Motive power is transferred to the agitating elements 3 by rotating an agitating shaft 2. Fluid 5 in the tank is discharged in the direction shown by the arrow 6 vertical to the tank wall. Fluid 5 discharged vertically to the tank wall collides against the ring-shaped projections 4 and the direction thereof is changed as shown by the arrows 7, 8. In such a way, fluid 5 flows along the ring-shaped projections 4 and decrease in flow velocity is inhibited. Fluid is straightened by the tank wall and thereby a dead zone is eliminated which is the stagnant place of fluid. Thus, agitation efficiency is enhanced and also heat transfer efficiency from the tank wall is enhanced.

8. 发明专利

JPH0422431A AGITATING ELEMENT 失效
公开(公告)号：JPH0422431A
公开(公告)日：1992-01-27
申请号：JP12411790
申请日：1990-05-16
申请人： HITACHI LTD
发明人： MARUYAMA EIJI , KAWAMURA SUNAO , WATABE KENICHI , HARADA KAZUNORI
IPC分类号： B01F7/16
摘要： PURPOSE:To enhance function of an agitating element without enlarging an occupied space by providing integrally a propeller blade inside a turbine impeller blade. CONSTITUTION:A turbine impeller blade 3, a disk 4 and a propeller blade 5 are installed on an agitation shaft 2 provided in an agitation tank 1. Said turbine impeller blade 3 is disposed outside the propeller blade 5. The agitation shaft 2 is rotated to carry out radial flow type agitation by means of the turbine blade 3, while the propeller blade 5 carried out axial flow type agitation, agitating up or down in the rotating direction of the agitation shaft 2. Therefore, radial flow and axial flow type agitations can be carried out by one stage constitution, though an occupied space is small, to enhance the function of agitating element.

9. 发明专利

JPH03106427A STIRRING BLADE FOR HIGH DELIVERY FLOW 失效
公开(公告)号：JPH03106427A
公开(公告)日：1991-05-07
申请号：JP24224689
申请日：1989-09-20
申请人： HITACHI LTD
发明人： KAWAMURA SUNAO , WATANABE KENICHI , MARUYAMA EIJI , HARADA KAZUNORI
IPC分类号： B01F7/18
摘要： PURPOSE:To reduce stirring power and to enhance stirring efficiency by mounting respective blades to an agitating element so as to incline the same in the rotary direction of the element so that the speeds of the fluid flowing along the blades at the respective positions of a plurality of the blades constituting the agitating element become same. CONSTITUTION:A boss 9 having a disc 10 fixed thereto is mounted to a stirring shaft 4 and a plurality of blades 11 are fixed to the periphery of the disc 10 to constitute an agitating element 1. Further, the respective blades 1 are mounted to the disc 10 so as to be inclined with respect to the rotary direction of the agitating element so that the speeds of the fluid flowing along the respective blades become the same value at the respective positions of the blades. As a result, the flow in the diameter direction due to the blades increases and the mixing capacity of the fluid in the whole of a tank is enhanced and stirring power per a unit volume is reduced and stirring efficiency is enhanced.

10. 发明专利

JPH10174857A VERTICAL AGITATOR HAVING LINEARLY ASYMMETRICAL PLATE IMPELLERS 失效
公开(公告)号：JPH10174857A
公开(公告)日：1998-06-30
申请号：JP33659296
申请日：1996-12-17
申请人： HITACHI LTD
发明人： KINOSHITA TAKATOSHI , HARADA KAZUNORI , MOTOHIRO SEIJI , SASE YASUNARI
IPC分类号： B01F7/16
摘要： PROBLEM TO BE SOLVED: To reduce the fabrication cost and not to deteriorate the agitation performance by mounting a plate provided with plural small holes or notches on both sides of an agitating shaft at a specified phase angle and arranging the plural notches asymmetrically to the agitating shaft. SOLUTION: An agitating shaft 2 is provided in the center of a vertical cylindrical agitated tank 1, and two plates 3 each furnished with plural notches 5 are attached to the agitating shaft 2 at a phase angle of 180 deg. as an impeller. The lateral length of the impeller is controlled to 25 to 80% of the inner diameter of the agitated tank 1. One or more plate baffles 4 are vertically fixed to the inner wall of the tank 1. The notches are arranged asymmetrically to the agitating shaft 2. The horizontally long, trapezoidal, vertically long, circular, elliptic or triangular notch can be used. Further, the total area of the notches formed in the plate 3 is preferably controlled to 50 to 80% of the area of the plate 3.

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