US3820761A - Rotating agitator for a cylindrical receptacle of great length - Google Patents

Rotating agitator for a cylindrical receptacle of great length Download PDF

Info

Publication number
US3820761A
US3820761A US00237269A US23726972A US3820761A US 3820761 A US3820761 A US 3820761A US 00237269 A US00237269 A US 00237269A US 23726972 A US23726972 A US 23726972A US 3820761 A US3820761 A US 3820761A
Authority
US
United States
Prior art keywords
blades
container
agitator
bars
bearings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00237269A
Other languages
English (en)
Inventor
J Rigal
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Creusot Loire SA
Areva NP SAS
Original Assignee
Creusot Loire SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Creusot Loire SA filed Critical Creusot Loire SA
Application granted granted Critical
Publication of US3820761A publication Critical patent/US3820761A/en
Assigned to FRAMATOME reassignment FRAMATOME ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CREUSOT LOIRE, BY: MATHIEU FERRARI, ACTING RECEIVER IN LIQUIDATION
Assigned to GOURDAIN, H., PERNOT, A., FERRARI, M. reassignment GOURDAIN, H. COURT APPOINTMENT (SEE DOCUMENT FOR DETAILS). EFFECTIVE DATE SEPTEMBER 11, 1984 Assignors: LOIRE, CREUSOT
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/12—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic in rotating drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/09—Stirrers characterised by the mounting of the stirrers with respect to the receptacle
    • B01F27/092—Stirrers characterised by the mounting of the stirrers with respect to the receptacle occupying substantially the whole interior space of the receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/114—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • B01J19/20—Stationary reactors having moving elements inside in the form of helices, e.g. screw reactors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00076—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements inside the reactor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/18—Details relating to the spatial orientation of the reactor
    • B01J2219/182—Details relating to the spatial orientation of the reactor horizontal

Definitions

  • This invention relates to a rotary agitator for a long cylindrical container.
  • Thetagitator is particularly useful, for example, for a horizontal-axis chemical reactor for the production of certain basic polymers.
  • the clearance between the agitator and the walls must b ⁇ e as small as possible.
  • the minimisation of the radial clearance 'between the agitator blades and the inner surface of the container wall is limited both by the ordinary initial production tolerances and by deformation that the agitator undergoes in operation due 4to forces applied to it during agitation of the material in the container.
  • the simplest and bestknown solution is therefore to make the agitator in the form of a robust and rigid central shaft with peripheral blades connected thereto by radiating arms.
  • the blades ⁇ are usually helical and are hollow, the central shaft of the agitator and the arms providing the connection between the shaft and the blades being also hollow; this arrangement allows fluid to flow inside the agitator elements ⁇ in order either to heat or cool the mixture being processed in the container.
  • the central shaft of the agitator becomes increasingly longer and its diameter has to be increased to give it sufficient rigidity to ensure minimum clearances between the agitator blades and the container wall.
  • This shaft diameter increase results in a reduction of the proportion of the volume of the container available for containing processing material and therefore a considerable increase in weight of the processing apparatus and hence a much higher cost price.
  • the length of such a shaft is also limited because of the dimensional limitations of machines capable of machining the trunnion bearings. i
  • the object of the invention is to provide a rotary agitator having a much higher structural rigidity than known agitators made from a comparable amount of metal, so that longer chemical-reaction containers can be produced.
  • a rotary agitator for a container comprising a plurality of bearing-members separated longitudinally of the agitator for cooperation with the bearings in the container, a plurality of helical blades each coupled directly and by at least one lattice rod to each of the bearing members, and coupled to each other by a plurality of said lattice rods.
  • the lattice rods are hollow and the internal chambers of these rods communicate with the internal chambers of the blades.
  • FIG. 1 is a side view of an agitator according to the invention, showing the ends of the agitator and connection to the trunnions;
  • FIG. v2 is an end view of the agitator.
  • the agitator is intended to be used in a generally cylindrical container l, the inside profile of which is shown in chain-dotted lines in the drawings. Both ends la of the container are of a conventional domed shape. At each end, the agitator rests via a trunnion 2 on a bearing 2a connected to the agitator body; these bearings are shown in the drawings and may be of any conventiona] type, for example,ysealed bearings if the container is to be operated under internal pressure.
  • the agitator operating members consist essentially of three helical blades 3, 4 and 5.
  • these blades consist of anglemembers so constructed that their angle is always directedtowards the axis of the container.
  • the trunnion 2 Towards its inner end, the trunnion 2 bears three radial arms 7, 8 and 9, each provided at one endwith a support 10, 11 and 12 having an angled notch of the same profile as the angle-section forming each of the blades.
  • Each support, 10, 11 or 12 is also connected to the trunnion 2 by a rod 13 acting as a strut.
  • Each blade for example blade 3, is secured at l5 to the trunnion 2, and is then fitted into the ⁇ groove of the support 10 with a curvature very similar to the internal curvature of the tank end, and then continuesY in the form of a purely helical part over an outside coil diameter slightly less, to allow the necessary clearance, than the inside diameter of the container.
  • each helical blade 3, 4 or 5 is connected to a support 1S, 16 and 17 respectively, in which they are each fitted.
  • Eachoi ⁇ the supports of the same transverse plane is connected to the other two by a first set of rods 18 which form an equilateral triangle.
  • Each support 15, 16 or 17 is also connected by a rod to a support of the preceding trans verse planeassociated with another blade, and to a sup port of the next transverse plane associated with the third blade.
  • the support 17' associated with the blade 5 is connected to the support 1l associated with the blade 4 and to a support 20 associated with the blade 3.
  • the support 16 associated with the blade 4 is connected to the support 10 associated with the blade 3 and to a support 22 associated with the blade S.
  • the agitator thus constructed according to the inven tion forms a three-dimensional lattice structure which allows the agitation blades to be used as the main frame members.
  • the blades forming the frame members are remote from the central axis of the apparatus so that improved assembly rigidity is obtained for a smaller amount of metal used.
  • the elimination of the central shaft improves access to the interior of the container for maintenance and cleaning operations and for the normal sizes of such containers used as chemical processing containers, al lows man access to the interior of the apparatus.
  • This method of construction also means that it is possible to depart from the limited size of existing machines, because it is no longer necessary to mount the agitator on a lathe to machine the trunnions. This removes one of the limitations in the possible sizes of the containers and their agitators.
  • the blades of the agitator may be hollow as at 4a to allow fluid to flow through them for cooling or heating of the product being processed.
  • This is already known in the case of conventional central-shaft agitators having radiating arms supporting the blades.
  • the shaft 2 is hollow as at 2b and the same applies to the arms connecting it to the blades as at 9a.
  • the agitator according to the invention also allows this fluid flow by the provision of tubular-section blades; since the supports to which the connecting arms are joined are also hollow as at 12a, as are the rods themselves, there is a complete interconnection of all the internal chambers of the agitator elements.
  • each support forming a connecting rod junction comprises an even number of outlets, thus allowing an equal distribution of the fluid in the various blades.
  • a rotary agitator comprising a cylindrical container having a long horizontal axis, ends for said cylindrical container, a bearing in each of said ends, trunnions rotatably mounted in each of said bearings, three 1 helicoidal spaced blades in said container closely spaced to the internal wall of said container and each of said blades being connected to each of said trunnions and rotating about an axis coincident with the long axis of said container, means for connecting each of said blades at regular intervals to the other two of said blades including a bar disposed in a plane perpendicular to the long axis of said container and a bar oblique with respect to said plane, said two bars, relative to each of the other bars of said two other blades, being disposed on opposite sides of said perpendicular plane.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Polymerisation Methods In General (AREA)
  • Sampling And Sample Adjustment (AREA)
US00237269A 1971-03-26 1972-03-23 Rotating agitator for a cylindrical receptacle of great length Expired - Lifetime US3820761A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7110816A FR2130950A5 (de) 1971-03-26 1971-03-26

Publications (1)

Publication Number Publication Date
US3820761A true US3820761A (en) 1974-06-28

Family

ID=9074219

Family Applications (1)

Application Number Title Priority Date Filing Date
US00237269A Expired - Lifetime US3820761A (en) 1971-03-26 1972-03-23 Rotating agitator for a cylindrical receptacle of great length

Country Status (7)

Country Link
US (1) US3820761A (de)
JP (1) JPS5139703B1 (de)
DE (1) DE2210735C3 (de)
FR (1) FR2130950A5 (de)
GB (1) GB1382504A (de)
IT (1) IT949089B (de)
NL (1) NL168425C (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4109069A (en) * 1974-12-04 1978-08-22 Rhone-Poulenc Industries Horizontal autoclave for the bulk preparation of polymers and copolymers on a basis of vinyl chloride
DE2937637A1 (de) * 1979-09-18 1981-04-02 Hoopman Onderzoek en Ontwikkeling B.V., Aalten Mischgeraet fuer insbesondere klumpenbildende mischungen
US4299935A (en) * 1971-07-08 1981-11-10 Rhone-Progil Process for bulk polymerization
US5382092A (en) * 1992-11-18 1995-01-17 Shinko Pantec Co., Ltd. Mixing apparatus and bottom ribbon blade used therein
US5590963A (en) * 1996-04-09 1997-01-07 Schuler Manufacturing & Equipment Co., Inc. Vertical feed mixer with hay claws
US5647665A (en) * 1996-04-18 1997-07-15 Schuler Manufacturing & Equipment Co., Inc. Vertical feed mixer with flighting plows
US5674956A (en) * 1989-02-03 1997-10-07 Hitachi, Ltd. Method for producing high viscosity materials
EP1002820A1 (de) * 1997-11-28 2000-05-24 Hitachi, Ltd. Verfahren und vorrichtung zur herstellung von polycarbonaten
US6399739B1 (en) 2001-08-22 2002-06-04 General Electric Company Preparation of polycarbonate having a predetermined molecular weight and level of endcapping
US6753403B2 (en) 1997-11-28 2004-06-22 Hitachi, Ltd. Process and apparatus for producing polycarbonate
US20180178176A1 (en) * 2015-07-01 2018-06-28 Sumitomo Heavy Industries Process Equipment Co., Ltd. Stirring Device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007009095U1 (de) * 2007-06-26 2008-11-13 Agratec Ag Fermentationsanlage
EP3012320A1 (de) * 2014-10-20 2016-04-27 Innovative Biogas GmbH & Co. KG Fermenter

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4299935A (en) * 1971-07-08 1981-11-10 Rhone-Progil Process for bulk polymerization
US4109069A (en) * 1974-12-04 1978-08-22 Rhone-Poulenc Industries Horizontal autoclave for the bulk preparation of polymers and copolymers on a basis of vinyl chloride
DE2937637A1 (de) * 1979-09-18 1981-04-02 Hoopman Onderzoek en Ontwikkeling B.V., Aalten Mischgeraet fuer insbesondere klumpenbildende mischungen
US5674956A (en) * 1989-02-03 1997-10-07 Hitachi, Ltd. Method for producing high viscosity materials
US5683178A (en) * 1989-02-03 1997-11-04 Hitachi, Ltd. Apparatus for producing high viscosity materials and method of producing the same
US5382092A (en) * 1992-11-18 1995-01-17 Shinko Pantec Co., Ltd. Mixing apparatus and bottom ribbon blade used therein
US5590963A (en) * 1996-04-09 1997-01-07 Schuler Manufacturing & Equipment Co., Inc. Vertical feed mixer with hay claws
US5647665A (en) * 1996-04-18 1997-07-15 Schuler Manufacturing & Equipment Co., Inc. Vertical feed mixer with flighting plows
EP1002820A1 (de) * 1997-11-28 2000-05-24 Hitachi, Ltd. Verfahren und vorrichtung zur herstellung von polycarbonaten
EP1002820A4 (de) * 1997-11-28 2000-10-18 Hitachi Ltd Verfahren und vorrichtung zur herstellung von polycarbonaten
US6265525B1 (en) 1997-11-28 2001-07-24 Hitachi, Ltd. Method and device for manufacturing polycarbonate
US6329495B2 (en) 1997-11-28 2001-12-11 Hitachi, Ltd. Process and apparatus for producing polycarbonate
US6753403B2 (en) 1997-11-28 2004-06-22 Hitachi, Ltd. Process and apparatus for producing polycarbonate
US6399739B1 (en) 2001-08-22 2002-06-04 General Electric Company Preparation of polycarbonate having a predetermined molecular weight and level of endcapping
US20180178176A1 (en) * 2015-07-01 2018-06-28 Sumitomo Heavy Industries Process Equipment Co., Ltd. Stirring Device
US10478791B2 (en) * 2015-07-01 2019-11-19 Sumitomo Heavy Industries Process Equipment Co., Ltd. Stirring device

Also Published As

Publication number Publication date
NL7202926A (de) 1972-09-28
NL168425C (nl) 1982-04-16
NL168425B (nl) 1981-11-16
DE2210735B2 (de) 1973-12-13
DE2210735A1 (de) 1972-10-19
DE2210735C3 (de) 1974-07-18
IT949089B (it) 1973-06-11
FR2130950A5 (de) 1972-11-10
GB1382504A (en) 1975-02-05
JPS5139703B1 (de) 1976-10-29

Similar Documents

Publication Publication Date Title
US3820761A (en) Rotating agitator for a cylindrical receptacle of great length
US3687422A (en) Multiple spindle mixing device
US3689035A (en) Multiple-spindle mixing kneader apparatus
US3346242A (en) Mixing machine
US6095035A (en) Dual drum food processor
ATE2535T1 (de) Kontinuierliches verfahren und vorrichtung zur herstellung von wasserloeslicher hydroxyalkylcellulose oder deren mischethern.
US4277585A (en) Vertical autoclave for bulk polymerization of vinyl chloride
US3343922A (en) Chemical reactor
US2831663A (en) Mixing device with a conical mixing vessel and at least two revolving mixing members
US3313341A (en) Heat exchanger
JPS62221436A (ja) 反応器およびその用法
US3682314A (en) Apparatus for reconditioning liquids contaminated with microorganisms
US2414062A (en) Apparatus for heating and controlling the temperature in a continuously operating digester
US3268923A (en) Extrusion washer
CA2185309A1 (en) Kneader mixer
US1793638A (en) Construction of fish-meal plants
US3725013A (en) Multisection apparatus with conveying means for carrying out mass-exchange processes in solid-liquid systems
CN210826186U (zh) 一种生产透明质酸的发酵装置
GB1348755A (en) Process for carrying out bulk polymerisation
US2919116A (en) Blending and heat exchange mill
SU827137A1 (ru) Статический смеситель
CN210138498U (zh) 一种中医药雾化剂生产用罐装设备
CN218314508U (zh) 一种具有加热功能的螺带混合机
CN214810761U (zh) 一种化工生产用的高效反应釜
CN220386382U (zh) 一种植脂末加工用并联卧式混料罐

Legal Events

Date Code Title Description
AS Assignment

Owner name: FRAMATOME, 1 PLACE DE LA COUPOLE, COURBEVOIE (HAUT

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CREUSOT LOIRE, BY: MATHIEU FERRARI, ACTING RECEIVER IN LIQUIDATION;REEL/FRAME:004849/0671

Effective date: 19880322

Owner name: FRAMATOME,FRANCE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CREUSOT LOIRE, BY: MATHIEU FERRARI, ACTING RECEIVER IN LIQUIDATION;REEL/FRAME:004849/0671

Effective date: 19880322

AS Assignment

Owner name: FERRARI, M., PARIS (1ST), 85, RUE DE RIVOLI

Free format text: COURT APPOINTMENT;ASSIGNOR:LOIRE, CREUSOT;REEL/FRAME:004969/0504

Effective date: 19840910

Owner name: PERNOT, A., PARIS (1ST), 144, RUE DE RIVOLI

Free format text: COURT APPOINTMENT;ASSIGNOR:LOIRE, CREUSOT;REEL/FRAME:004969/0504

Effective date: 19840910

Owner name: GOURDAIN, H., PARIS (6TH), 174, BLVD. SAINT GERMAI

Free format text: COURT APPOINTMENT;ASSIGNOR:LOIRE, CREUSOT;REEL/FRAME:004969/0504

Effective date: 19840910

Owner name: FERRARI, M., FRANCE

Free format text: COURT APPOINTMENT;ASSIGNOR:LOIRE, CREUSOT;REEL/FRAME:004969/0504

Effective date: 19840910

Owner name: PERNOT, A., FRANCE

Free format text: COURT APPOINTMENT;ASSIGNOR:LOIRE, CREUSOT;REEL/FRAME:004969/0504

Effective date: 19840910

Owner name: GOURDAIN, H., FRANCE

Free format text: COURT APPOINTMENT;ASSIGNOR:LOIRE, CREUSOT;REEL/FRAME:004969/0504

Effective date: 19840910