US1616547A - Handling dry pulverulent materials - Google Patents

Handling dry pulverulent materials Download PDF

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Publication number
US1616547A
US1616547A US9967726A US1616547A US 1616547 A US1616547 A US 1616547A US 9967726 A US9967726 A US 9967726A US 1616547 A US1616547 A US 1616547A
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Prior art keywords
material
vessel
under
air
handling dry
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Expired - Lifetime
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Pontoppidan Carl
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FLSmidth and Co AS
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FLSmidth and Co AS
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34Details
    • B65G53/40Feeding or discharging devices
    • B65G53/48Screws or like rotary conveyors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/04Conveying materials in bulk pneumatically through pipes or tubes; Air slides
    • B65G53/16Gas pressure systems operating with fluidisation of the materials
    • B65G53/18Gas pressure systems operating with fluidisation of the materials through a porous wall
    • B65G53/22Gas pressure systems operating with fluidisation of the materials through a porous wall the systems comprising a reservoir, e.g. a bunker

Description

. 1,616,547 9 c. PONTOPPIDAN HANDLING DRY PULV ERULENT MATERIALS Filed April 5, 1926 2 'Shets-Sheet 1 L J I L C V VXtXg E d $5 F 1 1,616,547 eb c. PONTOPPIDAN v I HANDLING DRY PULVBRULENT MATERIALS Filed April 5, 1926 2 Sheets-Sheet 2 IN VEN TOR Patented Feb. 8 1 927.

" UNITED STATES I 1,616,547 PATENT OFFICE.

CARL PONTOPPIDAN, OE COPENHAGEN, DENMARK, ASSIGNOR TO F. I. SIIDTH a CO.,

\ OF NEW YORK, N. Y., A CORPORATION 01' NEW JERSEY.

HANDLING DRY PULVERULENT MATERIALS.

Application and April a, 1926. Serial-No. 99,677.

. The object of this invention is to facilitate the handling of dry, pulverulent materials, such as dry Portland cementand coal dust, for example, for various purposes such a for example, as the bagging or barreling oi cement or the delivery of coal dustas fuel to a furnace or kiln. The particular purpose 4 has been to make it possible to deliver such material at a uniform rate and thereby to m facilitate themeasuring or the packaging of the material or the maintenance of predetermined conditions of combustion. In accordance with the invention, the material to be handled or treated or dealt with is maintained in-mass in a fluent condition by the admixture therewith of air, with or without mechanical agitation, and at a constant head and is then discharged into the measuring devices or the packaging machine or the furnace or kiln or elsewhere as the case may be. By thus maintaining the material in mass in a fluent condition and at a constant level or under a constant head and permitting it to flow under such conditions, the material is discharged at a uniform rate and, if in the form of powdered fuel, can be admixed with air and delivered into the furnace or kiln under such conditions as to insure practically perfect control of combustion, and, if dry cement or other merchantable commodity, can be measured, either by timing devices or weighing devices or otherwise, or delivered into barrels or bags or other packages, with great facility and with as certainty in delivery. The method in which the invention finds its best expression, obviously can be practiced in various forms of apparatus, suited to the character of the material and the ultimate purposes inview and it will be understood that so far as the invention finds expression in apparatus, such apparatus embodies certain essential features which take form and character according to the conditions under which the method is practiced.

In the accompanying drawings, Figures 1 and 2 are respectively views in outline, representing somewhat conventionally different forms of apparatus in which the method may be practiced.

c In both forms of apparatus'represented, .there is indicated a container a, such as a bin or tank, which stands as the source of supply of the material to be handled or treated. 'From the container or source of supply the material is delivered by any suitable means, represented generally by a screw conveyor 6, into a vessel 0 in which the material is to he maintained in a fluent condition and under a constant head and from which such -fluent material is to be permitted to flow at a uniform rate under the influence of such constant head. In .both forms of apparatus represented, the vessel -'0 is provided with means, represented as air nozzlesd, through which air or any other suitable or desired aeriform fluid, is admitted and admixed'with the pulverulent material in the vessel. The term-air is employed onlyfor convenience and brevity and it will be'understood that any other aeriform fluid, either of a neutral character or of a character calculated to have some influence or eflect on the material may be employed. The air is supplied under such pressure differential and in such volume as to be thoroughl admixed with the pulverulentmaterial an thereby to maintain the mass of such material in a fluent or mobile cndition in which it will be ca- -which the movement of the material to the desired point may be continued, 'but it will be understood that a. conduit of any sort is not essential in all cases, it being ssible that the material might flow direct y from the discharge opening 7 into a measuring device or a suitable receptacle.

In order that a uniform rate of flow 'of the fluent or mobile material from the vessel 6' may be attained, it is necessary that the material in the vessel 0 be maintained at a constant level or under a constant head. In 100 the form of apparatus indicated in Figure 1, the vessel 0 is provided at some suitable point inits upper portion with an overflow outlet it, through which the excess of material delivered to the vessel 0 by the feeding device 1 5 d may be returned to the container or source of supply a. In the form of apparatus shown in Figure 2, however, the vessel 0 is shown as provided with a float z, of any suitable material, which rests on the surface of 10 $0 the material a fluent condition by i the column of fluent material in the vessel 0 and is operatively connected with a rheostat k for the control, through suitable circuit connections, of a variable s (1 motor I by which the feeding device is driven. By either of such means or by other means which will suggest themselves, the fluent or mobile material in the vessel 0 is maintained at a constant level or under a constant head so that it flows from such vessel at a uniform rate.

It will be understood that the term handling is used herein in a broad sense and without any intention of limiting the invention by thelit'eral and restricted meaning of the term.

I claim as my invention 1. The method of handling dry pulverulent material which consists in imparttling to a material in said vessel under mixture of air, maintaining the mass of material admixed with air under a constant head, and discharging from the mass at a uniform rate under the influence of such constanthead the material so admixed with air.

2. An apparatus for handling dry pulverulent material which comprises a source of supply for the material, a vessel, means to de iver the material from the source of supply to said vessel, means to impart to the material in said vessel a fluent condition by the admixture of air, means to maintain the a constant head, and means whereby the material is disghaaged from the vessel under such constant ea a This specification signed this 19th day of March A. D. 1926. 4

- CARL PONTOPPIDAN.

US1616547A 1926-04-03 1926-04-03 Handling dry pulverulent materials Expired - Lifetime US1616547A (en)

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Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2437694A (en) * 1946-05-15 1948-03-16 Nasa Method for blending powder grains
US2438728A (en) * 1944-06-10 1948-03-30 Standard Oil Dev Co Temperature control in fluidized catalyst systems
US2448272A (en) * 1943-08-11 1948-08-31 Socony Vacuum Oil Co Inc Method and apparatus for separation of vapors from a contact mass
US2448745A (en) * 1943-11-16 1948-09-07 Struckmann Holger Conveying pulverized material
US2492401A (en) * 1945-02-24 1949-12-27 Lummus Co Gas adsorption
US2509431A (en) * 1949-07-14 1950-05-30 Shawinigan Chem Ltd Dispensing fluidized pulverulent materials
US2559557A (en) * 1944-07-12 1951-07-03 Babcock & Wilcox Co Aerating feeding of pulverized materials
US2568400A (en) * 1946-09-18 1951-09-18 Standard Oil Dev Co Process for subdividing solid particles
US2576177A (en) * 1948-12-30 1951-11-27 Herr Joseph Stanley Feed mixing apparatus
US2609185A (en) * 1949-07-04 1952-09-02 F S Smidth & Co Method and apparatus for increasing fluidity of material
US2641574A (en) * 1949-07-21 1953-06-09 Standard Oil Co Process and apparatus for decolorizing oil
US2651602A (en) * 1948-11-04 1953-09-08 Lummus Co Process and apparatus for clay contacting in the refining of lubricating oil
US2668365A (en) * 1949-12-31 1954-02-09 Standard Oil Dev Co Apparatus for determining densities of finely divided solid materials in a fluidized body of such materials
US2687343A (en) * 1949-12-19 1954-08-24 Phillips Petroleum Co Fluidized bed floating baffle
US2710232A (en) * 1950-06-14 1955-06-07 Lawrence D Schmidt Method for filling cavities with granular solids
US2718471A (en) * 1952-08-01 1955-09-20 Nat Plastic Products Company Blending method and apparatus
US2730407A (en) * 1950-10-23 1956-01-10 Union Oil Co Conveyance of granular solids
US2741546A (en) * 1952-07-02 1956-04-10 Exxon Research Engineering Co Floating control for fluidized solids system
US2746810A (en) * 1953-05-07 1956-05-22 Exxon Research Engineering Co Standpipe for coarse solids and method of operating
US2764316A (en) * 1952-10-02 1956-09-25 Smidth & Co As F L Apparatus for conveying pulverulent material
US2767030A (en) * 1951-12-21 1956-10-16 Atkinson Bulk Transp Company Apparatus for conveying pulverulent material in fixed installations
US2772864A (en) * 1954-12-08 1956-12-04 John P Rich Method and apparatus for evacuating pulp from high density storage towers
US2855246A (en) * 1955-04-22 1958-10-07 Ruston & Hornsby Ltd Gas-turbo engines
US2905362A (en) * 1954-09-17 1959-09-22 Fmc Corp Apparatus for filling powdered or granular materials into containers
US2914357A (en) * 1953-12-31 1959-11-24 Exxon Research Engineering Co Method of dispensing solids in polymerization mixtures
US2919159A (en) * 1956-06-08 1959-12-29 Pechiney Prod Chimiques Sa Pneumatic conveying method and system
US2919160A (en) * 1957-10-25 1959-12-29 American Cyanamid Co Apparatus for dispensing material
US2924489A (en) * 1954-11-09 1960-02-09 Beckmann Heinrich Process and apparatus for conveying finely divided material
US3062589A (en) * 1959-12-14 1962-11-06 Shell Oil Co Feeding powder at uniform rates
US3304127A (en) * 1965-08-20 1967-02-14 Ma Tran Corp Material handling apparatus
US3463553A (en) * 1966-11-18 1969-08-26 Siderurgie Fse Inst Rech Pneumatic conveyor
US3870375A (en) * 1971-11-02 1975-03-11 Nordson Corp Powder spray system
US3955907A (en) * 1970-12-07 1976-05-11 Keniti Yamasita Apparatus for molding layered concrete slabs
US3985263A (en) * 1972-04-05 1976-10-12 Research Corporation Apparatus and method for metering particles
US4037877A (en) * 1975-02-18 1977-07-26 Allen Foster Down-loading device
WO1990008723A1 (en) * 1989-01-25 1990-08-09 Alcan International Limited Feeder for particulate material
US5299888A (en) * 1991-11-27 1994-04-05 Finn Corporation Apparatus for conveying and discharging bulk materials
WO1997048629A1 (en) * 1996-06-18 1997-12-24 Kohlenstaubtechnik Dr. Schoppe Gmbh Process and device for fluidising fine-grained bulk products
EP0953525A2 (en) * 1998-04-28 1999-11-03 Spies, Klaus, Prof. Dr.-Ing.Dr. hc. Method and device for introducing a granular or paste like material into a processing plant, in particular high pressure transporting systems

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2448272A (en) * 1943-08-11 1948-08-31 Socony Vacuum Oil Co Inc Method and apparatus for separation of vapors from a contact mass
US2448745A (en) * 1943-11-16 1948-09-07 Struckmann Holger Conveying pulverized material
US2438728A (en) * 1944-06-10 1948-03-30 Standard Oil Dev Co Temperature control in fluidized catalyst systems
US2559557A (en) * 1944-07-12 1951-07-03 Babcock & Wilcox Co Aerating feeding of pulverized materials
US2492401A (en) * 1945-02-24 1949-12-27 Lummus Co Gas adsorption
US2437694A (en) * 1946-05-15 1948-03-16 Nasa Method for blending powder grains
US2568400A (en) * 1946-09-18 1951-09-18 Standard Oil Dev Co Process for subdividing solid particles
US2651602A (en) * 1948-11-04 1953-09-08 Lummus Co Process and apparatus for clay contacting in the refining of lubricating oil
US2576177A (en) * 1948-12-30 1951-11-27 Herr Joseph Stanley Feed mixing apparatus
US2609185A (en) * 1949-07-04 1952-09-02 F S Smidth & Co Method and apparatus for increasing fluidity of material
US2509431A (en) * 1949-07-14 1950-05-30 Shawinigan Chem Ltd Dispensing fluidized pulverulent materials
US2641574A (en) * 1949-07-21 1953-06-09 Standard Oil Co Process and apparatus for decolorizing oil
US2687343A (en) * 1949-12-19 1954-08-24 Phillips Petroleum Co Fluidized bed floating baffle
US2668365A (en) * 1949-12-31 1954-02-09 Standard Oil Dev Co Apparatus for determining densities of finely divided solid materials in a fluidized body of such materials
US2710232A (en) * 1950-06-14 1955-06-07 Lawrence D Schmidt Method for filling cavities with granular solids
US2730407A (en) * 1950-10-23 1956-01-10 Union Oil Co Conveyance of granular solids
US2767030A (en) * 1951-12-21 1956-10-16 Atkinson Bulk Transp Company Apparatus for conveying pulverulent material in fixed installations
US2741546A (en) * 1952-07-02 1956-04-10 Exxon Research Engineering Co Floating control for fluidized solids system
US2718471A (en) * 1952-08-01 1955-09-20 Nat Plastic Products Company Blending method and apparatus
US2764316A (en) * 1952-10-02 1956-09-25 Smidth & Co As F L Apparatus for conveying pulverulent material
US2746810A (en) * 1953-05-07 1956-05-22 Exxon Research Engineering Co Standpipe for coarse solids and method of operating
US2914357A (en) * 1953-12-31 1959-11-24 Exxon Research Engineering Co Method of dispensing solids in polymerization mixtures
US2905362A (en) * 1954-09-17 1959-09-22 Fmc Corp Apparatus for filling powdered or granular materials into containers
US2924489A (en) * 1954-11-09 1960-02-09 Beckmann Heinrich Process and apparatus for conveying finely divided material
US2772864A (en) * 1954-12-08 1956-12-04 John P Rich Method and apparatus for evacuating pulp from high density storage towers
US2855246A (en) * 1955-04-22 1958-10-07 Ruston & Hornsby Ltd Gas-turbo engines
US2919159A (en) * 1956-06-08 1959-12-29 Pechiney Prod Chimiques Sa Pneumatic conveying method and system
US2919160A (en) * 1957-10-25 1959-12-29 American Cyanamid Co Apparatus for dispensing material
US3062589A (en) * 1959-12-14 1962-11-06 Shell Oil Co Feeding powder at uniform rates
US3304127A (en) * 1965-08-20 1967-02-14 Ma Tran Corp Material handling apparatus
US3463553A (en) * 1966-11-18 1969-08-26 Siderurgie Fse Inst Rech Pneumatic conveyor
US3955907A (en) * 1970-12-07 1976-05-11 Keniti Yamasita Apparatus for molding layered concrete slabs
US3870375A (en) * 1971-11-02 1975-03-11 Nordson Corp Powder spray system
US3985263A (en) * 1972-04-05 1976-10-12 Research Corporation Apparatus and method for metering particles
US4037877A (en) * 1975-02-18 1977-07-26 Allen Foster Down-loading device
WO1990008723A1 (en) * 1989-01-25 1990-08-09 Alcan International Limited Feeder for particulate material
US5299888A (en) * 1991-11-27 1994-04-05 Finn Corporation Apparatus for conveying and discharging bulk materials
WO1997048629A1 (en) * 1996-06-18 1997-12-24 Kohlenstaubtechnik Dr. Schoppe Gmbh Process and device for fluidising fine-grained bulk products
EP0953525A2 (en) * 1998-04-28 1999-11-03 Spies, Klaus, Prof. Dr.-Ing.Dr. hc. Method and device for introducing a granular or paste like material into a processing plant, in particular high pressure transporting systems
EP0953525A3 (en) * 1998-04-28 2001-04-18 Spies, Klaus, Prof. Dr.-Ing.Dr. hc. Method and device for introducing a granular or paste like material into a processing plant, in particular high pressure transporting systems

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