US2539109A - Coal conveying system - Google Patents
Coal conveying system Download PDFInfo
- Publication number
- US2539109A US2539109A US609159A US60915945A US2539109A US 2539109 A US2539109 A US 2539109A US 609159 A US609159 A US 609159A US 60915945 A US60915945 A US 60915945A US 2539109 A US2539109 A US 2539109A
- Authority
- US
- United States
- Prior art keywords
- air
- coal
- separator
- conveying system
- amount
- 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
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-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/001—Injecting additional fuel or reducing agents
- C21B5/003—Injection of pulverulent coal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/06—Gas pressure systems operating without fluidisation of the materials
Definitions
- This invention relates generally to conveying systems, and particularly to a coal conveying system.
- the main object of this invention is to provide a convenient, flexible and eiiicient means for moving solid fuel such as coal, from on point to another without forming an objectionable amount of dust and with the expenditure of the minimum amount of effort and power.
- a bleeder pipe l6 which connects with the duct 12 between the feeder l8 and the fan [3.
- the bleeder pipe [6 discharges into a small cyclone H, which removes the dust from it or bleeds from the system. This dust is accumulated in the container [8.
- invention resides in the withdrawal of a portion of the conveying medium in order to reduce the amount of dust given off by the fuel at the point of discharge.
- the feeder I 0 would be air tight and so designed as to create a slight suction or at least maintain a substantially atmospheric pressure at the discharge to prevent air from blowing back through the coal II.
- the bleeder pipe I6 may be located at any point on the pressure side of the system where the air pressure is sufiicientlyabove atmospheric to cause the desired flow through the bleeder pipe IE and cyclone I1.
- a pneumatic coal conveying system having a fan with an air inlet opening and an air outlet opening, a coal feeder with a coal discharge opening, a separator with a combined coal and air inlet opening, an air outlet opening, and a separate coal outlet opening, a first conduit connecting said fan outlet opening with said combined separator opening, a second conduit connecting said separator air outlet opening with said inlet opening of said fan, and a connection between said feeder discharge and said first conduit intermediate said fan and said separator, the provision for dustless discharge of said coal from said separator coal outlet opening which comprises means opening said first conduit to the atmosphere between said fan outlet and said feeder connection to said conduit, means for adjusting the resistance to air fioW of said last mentioned means, and means in said first conduit between said atmospheric connection and said feeder connection for adjusting the resistance to air flow of said first conduit whereby by the manipulation of either or both of said air flow resistance adjusting means a controlled amount of air can be induced into said system through said coal outlet opening of said separator and an equivalent amount of air can be ejected from said system
Description
Jan 23 11951 E. c. WEBB com. CONVEYING SYSTEM Filed Aug. 6, 1945 Patented Jan. 23, 1951 OFFICE COAL CONVEYING SYSTEM Ernest C. Webb, Bay Village, Ohio, assignor to Iron Fireman Manufacturing Company, Fortland, Oreg.
Application August 6, 1945, Serial N0. 609,159
1 Claim.
This invention relates generally to conveying systems, and particularly to a coal conveying system.
The main object of this invention is to provide a convenient, flexible and eiiicient means for moving solid fuel such as coal, from on point to another without forming an objectionable amount of dust and with the expenditure of the minimum amount of effort and power.
I accomplish these objects in the manner set forth in the following specification as illustrated in the accompanying drawing, in which is somewhat schematically shown a mechanical coal feeder Ill by means of which coal II is fed from a truck, freight car or bin (not shown) into an air duct l2, to which air is delivered by a fan [3 and carried to the separator I l, from which the solids H fall to the point of delivery. A return air pipe l5 extends from the separator M to the intake side of the fan i3, forming thereby a closed system. It is obvious that with such a system, some air would pass through the coal I l and the feeder Ill and form an objectionable amount of dust in the surrounding atmosphere.
In order to prevent thi condition, there is provided a bleeder pipe l6, which connects with the duct 12 between the feeder l8 and the fan [3. The bleeder pipe [6 discharges into a small cyclone H, which removes the dust from it or bleeds from the system. This dust is accumulated in the container [8. It is desirable to provide the duct l2 with a butterfly valve !9 and the bleeder pipe l6 with a valve 21!, by means of which valves is and 20 the relationship of air flow within the duct [2 and pipe it may be varied at will.
While the foregoing illustrates a representative form of the system, it must be understood that the details can be varied greatly to meet the conditions present, but in any event, the operation of the device tends to reduce the amount of dust given off with the coal at the point of delivery.
The foregoing is merely illustrative of an adaptation of the idea involved. With the present system, invention resides in the withdrawal of a portion of the conveying medium in order to reduce the amount of dust given off by the fuel at the point of discharge.
In a system of this kind the feeder I 0 would be air tight and so designed as to create a slight suction or at least maintain a substantially atmospheric pressure at the discharge to prevent air from blowing back through the coal II. It
is therefore assumed that the only place for air to enter or leave the system would be through the bleeder pipe H6 or through the discharge opening of the separator M. Therefore, any air that is bled out of the system by the pipe H5 must be replaced by air entering the system at the separator Hi. It is this feature Which makes the apparatus function successfully.
To restate the matter, if ther is a small amount of air sweeping over the coal pile and entering the cyclone I l through its discharge opening, there is no possibility of dust blowing out through the opening of the cyclone I t. The amount of air entering the cyclone i4 is of course exactly equal to the amount of air bein discharged through the bleeder pipe I6. It is therefore obvious that in order to accomplish its purpose, the bleeder pipe It may be located at any point on the pressure side of the system where the air pressure is sufiicientlyabove atmospheric to cause the desired flow through the bleeder pipe IE and cyclone I1.
While I have thus illustrated and described my invention, it is not my desire to be limited to the precise form shown herein, and I intend to cover such forms and modifications of the invention as fall fairly Within the appended claim.
I claim:
In a pneumatic coal conveying system having a fan with an air inlet opening and an air outlet opening, a coal feeder with a coal discharge opening, a separator with a combined coal and air inlet opening, an air outlet opening, and a separate coal outlet opening, a first conduit connecting said fan outlet opening with said combined separator opening, a second conduit connecting said separator air outlet opening with said inlet opening of said fan, and a connection between said feeder discharge and said first conduit intermediate said fan and said separator, the provision for dustless discharge of said coal from said separator coal outlet opening which comprises means opening said first conduit to the atmosphere between said fan outlet and said feeder connection to said conduit, means for adjusting the resistance to air fioW of said last mentioned means, and means in said first conduit between said atmospheric connection and said feeder connection for adjusting the resistance to air flow of said first conduit whereby by the manipulation of either or both of said air flow resistance adjusting means a controlled amount of air can be induced into said system through said coal outlet opening of said separator and an equivalent amount of air can be ejected from said system to the atmosphere through said at- UNITED STATES PATENTS mospheric connection to said first conduit. Number Name Date ERNEST WEBB- 310,905 Milbank Jan. 20, 1885 462,424 Day Sept. 13, 1892 RJFERENCES CITED 6 1,468,966 Herington. Sept. 25, 1923 The following references are of record in the 2,027,697 Nielsen Jan. 14, 1936 file of this patent: 2,234,788 Williams Mar. 11, 1941
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US609159A US2539109A (en) | 1945-08-06 | 1945-08-06 | Coal conveying system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US609159A US2539109A (en) | 1945-08-06 | 1945-08-06 | Coal conveying system |
Publications (1)
Publication Number | Publication Date |
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US2539109A true US2539109A (en) | 1951-01-23 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US609159A Expired - Lifetime US2539109A (en) | 1945-08-06 | 1945-08-06 | Coal conveying system |
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US (1) | US2539109A (en) |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2784858A (en) * | 1953-11-19 | 1957-03-12 | Neil H Gebhardt | Ash removal system for trucks |
US2810609A (en) * | 1952-10-13 | 1957-10-22 | Capital Products Corp | Pneumatic conveyor system |
US2814531A (en) * | 1956-04-27 | 1957-11-26 | Clough Equipment Co | Balanced pneumatic conveying systems for pulverulent material |
US2819120A (en) * | 1954-12-30 | 1958-01-07 | Humes Ltd | Flux feeding systems for electric welding |
US2879109A (en) * | 1959-03-24 | Pneumatic return systems | ||
US2972499A (en) * | 1958-08-08 | 1961-02-21 | William B Gray | Pneumatic conveyor system for transportation of bulk material |
US2988403A (en) * | 1958-12-11 | 1961-06-13 | Svenska Flaektfabriken Ab | Pneumatic transporting apparatus |
US3010766A (en) * | 1959-04-16 | 1961-11-28 | William D Coski | Compressor and granular-material conveying systems |
US3809438A (en) * | 1973-03-22 | 1974-05-07 | Arbeck Ind Mining Equip | Pneumatic conveying apparatus |
EP0043607A1 (en) * | 1980-07-09 | 1982-01-13 | Paul Wurth S.A. | Method and apparatus for the uniform pneumatic conveyance of finely divided solids and application to the injection of solid fuels into a shaft furnace |
US6079461A (en) * | 1998-08-17 | 2000-06-27 | The Heil Co. | Use of inert gas in transfer of comminuted product to tank |
EP2219979A1 (en) * | 2007-12-21 | 2010-08-25 | Maricap OY | Method and apparatus in pneumatic material conveying system |
US20100278598A1 (en) * | 2007-12-21 | 2010-11-04 | Sundholm Goeran | Method in pneumatic material conveying system and a pneumatic material conveying system |
US20100278596A1 (en) * | 2007-12-21 | 2010-11-04 | Sundholm Goeran | Method and apparatus in pneumatic material conveying system |
US20100296880A1 (en) * | 2007-12-21 | 2010-11-25 | Sundholm Goeran | Pneumatic material conveying system |
US20100303559A1 (en) * | 2007-12-21 | 2010-12-02 | Sundholm Goeran | Method in pneumatic material conveying system and a pneumatic material conveying system |
US20100310327A1 (en) * | 2007-12-21 | 2010-12-09 | Sundholm Goeran | Method and apparatus in pneumatic material conveying system |
US20110002748A1 (en) * | 2007-12-21 | 2011-01-06 | Sundholm Goeran | Method and apparatus in pneumatic material conveying system |
WO2013182346A1 (en) * | 2012-06-05 | 2013-12-12 | Thilo Kraemer | Pneumatic conveyor for transporting bulk materials |
US20150368043A1 (en) * | 2013-01-25 | 2015-12-24 | Maricap Oy | Method and apparatus for feeding in waste material from an inlet chute |
US20180111538A1 (en) * | 2016-10-26 | 2018-04-26 | Saltco, LLC | System, apparatus and method for monitoring and delivery of salt |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US310905A (en) * | 1885-01-20 | milbank | ||
US482424A (en) * | 1892-09-13 | Fuel-feeder | ||
US1468966A (en) * | 1923-09-25 | Terson | ||
US2027697A (en) * | 1932-12-08 | 1936-01-14 | Smidth & Co As F L | Homogenizing pulverulent materials |
US2234788A (en) * | 1939-09-07 | 1941-03-11 | John K Williams | Pneumatic ash remover |
-
1945
- 1945-08-06 US US609159A patent/US2539109A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US310905A (en) * | 1885-01-20 | milbank | ||
US482424A (en) * | 1892-09-13 | Fuel-feeder | ||
US1468966A (en) * | 1923-09-25 | Terson | ||
US2027697A (en) * | 1932-12-08 | 1936-01-14 | Smidth & Co As F L | Homogenizing pulverulent materials |
US2234788A (en) * | 1939-09-07 | 1941-03-11 | John K Williams | Pneumatic ash remover |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2879109A (en) * | 1959-03-24 | Pneumatic return systems | ||
US2810609A (en) * | 1952-10-13 | 1957-10-22 | Capital Products Corp | Pneumatic conveyor system |
US2784858A (en) * | 1953-11-19 | 1957-03-12 | Neil H Gebhardt | Ash removal system for trucks |
US2819120A (en) * | 1954-12-30 | 1958-01-07 | Humes Ltd | Flux feeding systems for electric welding |
US2814531A (en) * | 1956-04-27 | 1957-11-26 | Clough Equipment Co | Balanced pneumatic conveying systems for pulverulent material |
US2972499A (en) * | 1958-08-08 | 1961-02-21 | William B Gray | Pneumatic conveyor system for transportation of bulk material |
US2988403A (en) * | 1958-12-11 | 1961-06-13 | Svenska Flaektfabriken Ab | Pneumatic transporting apparatus |
US3010766A (en) * | 1959-04-16 | 1961-11-28 | William D Coski | Compressor and granular-material conveying systems |
US3809438A (en) * | 1973-03-22 | 1974-05-07 | Arbeck Ind Mining Equip | Pneumatic conveying apparatus |
EP0043607A1 (en) * | 1980-07-09 | 1982-01-13 | Paul Wurth S.A. | Method and apparatus for the uniform pneumatic conveyance of finely divided solids and application to the injection of solid fuels into a shaft furnace |
US6079461A (en) * | 1998-08-17 | 2000-06-27 | The Heil Co. | Use of inert gas in transfer of comminuted product to tank |
US20100278598A1 (en) * | 2007-12-21 | 2010-11-04 | Sundholm Goeran | Method in pneumatic material conveying system and a pneumatic material conveying system |
EP2219979A1 (en) * | 2007-12-21 | 2010-08-25 | Maricap OY | Method and apparatus in pneumatic material conveying system |
US20100278596A1 (en) * | 2007-12-21 | 2010-11-04 | Sundholm Goeran | Method and apparatus in pneumatic material conveying system |
US20100296880A1 (en) * | 2007-12-21 | 2010-11-25 | Sundholm Goeran | Pneumatic material conveying system |
US20100303559A1 (en) * | 2007-12-21 | 2010-12-02 | Sundholm Goeran | Method in pneumatic material conveying system and a pneumatic material conveying system |
US20100310327A1 (en) * | 2007-12-21 | 2010-12-09 | Sundholm Goeran | Method and apparatus in pneumatic material conveying system |
US20110002748A1 (en) * | 2007-12-21 | 2011-01-06 | Sundholm Goeran | Method and apparatus in pneumatic material conveying system |
EP2219979A4 (en) * | 2007-12-21 | 2013-06-05 | Maricap Oy | Method and apparatus in pneumatic material conveying system |
WO2013182346A1 (en) * | 2012-06-05 | 2013-12-12 | Thilo Kraemer | Pneumatic conveyor for transporting bulk materials |
US9365367B2 (en) | 2012-06-05 | 2016-06-14 | Thilo Kraemer | Pneumatic conveyor for transporting bulk materials |
US9617088B2 (en) | 2012-06-05 | 2017-04-11 | Thilo Kraemer | Pneumatic conveyor for transporting bulk materials |
US20150368043A1 (en) * | 2013-01-25 | 2015-12-24 | Maricap Oy | Method and apparatus for feeding in waste material from an inlet chute |
US20180111538A1 (en) * | 2016-10-26 | 2018-04-26 | Saltco, LLC | System, apparatus and method for monitoring and delivery of salt |
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