US1686719A - Fuel-pulverizing system - Google Patents

Fuel-pulverizing system Download PDF

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Publication number
US1686719A
US1686719A US199474A US19947427A US1686719A US 1686719 A US1686719 A US 1686719A US 199474 A US199474 A US 199474A US 19947427 A US19947427 A US 19947427A US 1686719 A US1686719 A US 1686719A
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US
United States
Prior art keywords
gas
mill
separator
pipe
drum
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
US199474A
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English (en)
Inventor
Wilfred R Wood
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.)
International Combustion Engineering Corp
Original Assignee
Int Comb Eng Corp
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 Int Comb Eng Corp filed Critical Int Comb Eng Corp
Priority to US199474A priority Critical patent/US1686719A/en
Priority to FR655672D priority patent/FR655672A/fr
Application granted granted Critical
Publication of US1686719A publication Critical patent/US1686719A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group

Definitions

  • the primary object of my invention is to enable the gas to be withdrawn 'from the system without this diificulty by simple and effective mechanism.
  • the system comprises, in general, a pulverizer mill A, a separator B, suitable connection 0 between the mill and separator,-
  • Goal to be crushed in the mill A is conducted thereto by means of the pipe 2 which leads from any suitable source of supply of raw coal.
  • a fan 3 is locatedin the connection or conduit C for setting up a gas current through the s stem.
  • a. portion of the return air or gas is discharged from the system through the pipe 7, and a corresponding quantity of dryer air or gas is introduced into the system through the mill by means of the pipe 4.
  • sufiiciently hot air or hot gas is introduced into the system by means of the conduit 4 which may be connected, for example, with a furnace flue so as to conduct hot flue gas to the pulverizer mill.
  • the coal after being pulverized in the mill, is conductedby the current of gas to the cyclone separator B where the coal and air are,separated.
  • the s arated coal is discharged from the separato at the bottom through the pipe 5 which may-lead to a desired point, as to a storage bin.
  • the circulating gas, together with any coal particles nOtsepara'ted, is returned to the mill by means of the return. connection or conduit D.
  • the device E is so constructed as to separate the coal particles from the gas to be discharged, and, in this instance, com prises a drum-like portion 6 in the return line D which is preferably horizontally disposed, and the coaxial gas outlet pipe 7 extending into the drum-like portion and terminating short of an end of the drum as indicated at S.
  • the pipe 9 or the line D lea'ds from-the cyclone separator B to the periphery of' the drum 6 at one end thereof, and discharges its contents tangentially into the drum.
  • coal particles and gas entering, as they do, tangentially, are swirled about in the drum, which causes the coal particles to be centrifugally separated from the air, and, finally, are discharged into the pipe 10 for return to the mill.
  • Any accumulation of coal particles within the drum “may be led ofi'through the pipe 11 to any desired point, as to a storage bin, to which the pipe 5'may also lead. .
  • gas clear of coal enters the open end of the pipe 7 at 8 as indicated by the arrows and exhausts from the system.
  • a mill In a pulverizing system, a mill, a separator, a pipe between the mill and separator,
  • means for setting up a current of a' gas through the system means for exhausting a port on of the gas in the system from the return side thereof, a centrifugal separator in the retu-rnflinc and from which said gas to be exhausted is Withdrawn, means for introducing a relatively dry gas into the system' in an amount corresponding to the amount of gas Withdrawn.
  • 111 pulverized system, a mill, a separater, a pipe between the mill and separator, a'ret'urn line from the separator to the mill, means for setting up a current of a gas through the system, said return line including a separator-and means for exhausting a portion of the gas separated thereby from the system, and means for introducing a relatively dry gas into the system in an amount corresponding to the amount of gas exhausted.
  • a mill In a pulverizing system, a mill; a separator; a connection between the mill and separator; a return connection from the separator to the mill; means for settin u a a current of a gas through the system; said return connection including a drum tangentially receiving the gas and fuel particles delivered from said separator into said return line, tangentially delivering gas and.
  • a mill In a pulverizing system, a mill; a separator; a connection between the mill and separator; a return connection from the separator to the mill; means for setting up a current of gas through the system; said return connection including a horizontally disposed drum-like portion adapted to centrifugally separate fuel particles from the gas being passed through said connection and an axially disposed pipe extending into said drum-like portion and terminating short of an end thereof for discharging a portion of the gas from the system; and
  • a fuel pulverizing system including a mill. having an inlet for fuel'to be pulverized, a separator, a delivery conduit between the mill and separator, a return connection between the separator and the mill, means for admitting fluid to the system, a fan in said delivery conduit for setting up a fluid current in the system, said return connection comprising a drum, a pipe leading from the separator to the drum arranged to tangentially discharge its contents into said drum, and a pipe leading from the drum to the mill arranged to tangentially receive its contents from the drum, and means for discharging a predetermined amount of fluid from said drum.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
US199474A 1927-06-17 1927-06-17 Fuel-pulverizing system Expired - Lifetime US1686719A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US199474A US1686719A (en) 1927-06-17 1927-06-17 Fuel-pulverizing system
FR655672D FR655672A (fr) 1927-06-17 1928-06-13 Perfectionnements apportés à la construction des appareils de pulvérisation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US199474A US1686719A (en) 1927-06-17 1927-06-17 Fuel-pulverizing system

Publications (1)

Publication Number Publication Date
US1686719A true US1686719A (en) 1928-10-09

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ID=22737653

Family Applications (1)

Application Number Title Priority Date Filing Date
US199474A Expired - Lifetime US1686719A (en) 1927-06-17 1927-06-17 Fuel-pulverizing system

Country Status (2)

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US (1) US1686719A (fr)
FR (1) FR655672A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428422A (en) * 1944-04-19 1947-10-07 Babcock & Wilcox Co Apparatus for maintaining a controlled recirculation of carrier medium through an air-swept pulverizer
US2674413A (en) * 1951-10-16 1954-04-06 Weston David Closed circuit air swept rotating drum material reduction system with air drawoff todust collector and air entry control means adjacent mill inlet
US3081555A (en) * 1959-12-17 1963-03-19 Whirlpool Co Lint remover for dryer
US3111398A (en) * 1960-09-23 1963-11-19 Oklahoma Electronics Ind Inc Electronic and thermodynamic apparatus for processing grains
US3218729A (en) * 1962-01-15 1965-11-23 Dow Chemical Co Drying wet granular solid materials
US3436837A (en) * 1963-08-13 1969-04-08 Us Army Fluidized bed freeze drying
WO1981000146A1 (fr) * 1979-07-02 1981-01-22 W Duske Installation de deshydratation

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428422A (en) * 1944-04-19 1947-10-07 Babcock & Wilcox Co Apparatus for maintaining a controlled recirculation of carrier medium through an air-swept pulverizer
US2674413A (en) * 1951-10-16 1954-04-06 Weston David Closed circuit air swept rotating drum material reduction system with air drawoff todust collector and air entry control means adjacent mill inlet
US3081555A (en) * 1959-12-17 1963-03-19 Whirlpool Co Lint remover for dryer
US3111398A (en) * 1960-09-23 1963-11-19 Oklahoma Electronics Ind Inc Electronic and thermodynamic apparatus for processing grains
US3218729A (en) * 1962-01-15 1965-11-23 Dow Chemical Co Drying wet granular solid materials
US3436837A (en) * 1963-08-13 1969-04-08 Us Army Fluidized bed freeze drying
WO1981000146A1 (fr) * 1979-07-02 1981-01-22 W Duske Installation de deshydratation

Also Published As

Publication number Publication date
FR655672A (fr) 1929-04-22

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