US3735498A — Method of and apparatus for fluidizing solid part…

Claim 1

Independent Claim 136 words

An apparatus for fluidizing solid particles comprising a vessel, provided with at least one inlet and at least one exhaust outlet for a fluidizing gas, an inlet for said particles and at least one perforated plate for forming a fluidized bed thereon, having (a) a lower chamber separated by said perforaTed plate into a lower section, in which said gas inlet is located, and an upper section, (b) an upper chamber, in which said exhaust outlet is located, and (c) an intermediate portion consisting of a plurality of conduits fluidly connected to said lower chamber and said upper chamber, a total of cross-sectional areas of said conduits being less than cross-sectional areas of said lower chamber, and the bottom of said upper chamber, from which said conduits extend downwardly, being of a cone shape projecting downwardly.

Claim 2

Independent Claim 136 words

An apparatus for fluidizing solid particles comprising a vessel, provided with at least one inlet and at least one exhaust outlet for a fluidizing gas, an inlet for said particles and at least one perforated plate for forming a fluidized bed thereon, having (a) a lower chamber separated by said perforaTed plate into a lower section, in which said gas inlet is located, and an upper section, (b) an upper chamber, in which said exhaust outlet is located, and (c) an intermediate portion consisting of a plurality of conduits fluidly connected to said lower chamber and said upper chamber, a total of cross-sectional areas of said conduits being less than cross-sectional areas of said lower chamber, and the bottom of said upper chamber, from which said conduits extend downwardly, being of a cone shape projecting downwardly.

Claim 3

Dependent Claim 20 words

An apparatus according to claim 1, wherein one of said conduits is located at the bottommost part of said cone.

Claim 4

Independent Claim 166 words

A method of fluidizing solid particles in a vessel having an arrangement comprising a lower chamber provided with a perforated plate for forming a fluidized bed thereon, an upper chamber and an intermediate portion consisting of a plurality of conduits fluidly connected between said lower chamber and said upper chamber comprising flowing a fluidized gas into said lower chamber to pass upwardly through said perforated plate and said conduits to be discharged from said upper chamber; feeding said solid particles into said chamber arrangement to be fluidized by said gas; the flowing of said fluidized gas through one of said conduits being at a higher velocity than the flow through said one conduit creating upward transport of said solid particles, and the lower velocity flow through said other conduits creating a downward transport of said solid particles; the upward and downward transport creating a circulating stream of solid particles throughout said conduits and said said chambers; and discharging said fluidized solid particles from said lower chamber.

Claim 5

Independent Claim 166 words

A method of fluidizing solid particles in a vessel having an arrangement comprising a lower chamber provided with a perforated plate for forming a fluidized bed thereon, an upper chamber and an intermediate portion consisting of a plurality of conduits fluidly connected between said lower chamber and said upper chamber comprising flowing a fluidized gas into said lower chamber to pass upwardly through said perforated plate and said conduits to be discharged from said upper chamber; feeding said solid particles into said chamber arrangement to be fluidized by said gas; the flowing of said fluidized gas through one of said conduits being at a higher velocity than the flow through said one conduit creating upward transport of said solid particles, and the lower velocity flow through said other conduits creating a downward transport of said solid particles; the upward and downward transport creating a circulating stream of solid particles throughout said conduits and said said chambers; and discharging said fluidized solid particles from said lower chamber.

Claim 6

Dependent Claim 39 words

A method according to claim 3 including flowing a second fluidized gas into said upper chamber through a second perforated plate therein, and mixing said second gas with said first-named gas to provide the fluidizing of said solid particles.

Claim 7

Dependent Claim 63 words

A method according to claim 4 in which a first fluidizing bed is formed above said first-named perforated plate by said first-named gas flow, a second fluidized bed is formed above said second perforated plate by said second gas flow, and the velocity flow through said conduits is adjusted to be at least ten times more than the flow in the fluidizing beds.

Claim 8

Dependent Claim 17 words

A method according to claim 3 including discharging part of said gas flow from said lower chamber.

Claim 9

Dependent Claim 24 words

A method according to claim 3 in which part of said gas flow in said conduits is guided to flow in a spiral path.

Claim 10

Dependent Claim 140 words

Apparatus for fluidizing solid particles comprising a lower chamber having a predetermined cross-sectional area and including a fluidizing gas inlet; a perforated plate extending across said lower chamber to provide an upper section and a lower section, said gas inlet located in said lower section to flow gas therethrough to form a fluidized bed above said perforated plate in said upper section; an upper chamber having a discharge outlet for said gas; a plurality of conduits interconnecting said lower chamber and said upper chamber to provide a connected arrangement for gas flow therethrough; said arrangement including an inlet for the reception of solid particles to be circulated therethrough; a solid particle discharge outlet located in said upper section of said lower chamber; and said conduits having a combined cross-sectional area less than said predetermined cross-sectional area of said lower chamber.

Claim 11

Dependent Claim 140 words

Apparatus for fluidizing solid particles comprising a lower chamber having a predetermined cross-sectional area and including a fluidizing gas inlet; a perforated plate extending across said lower chamber to provide an upper section and a lower section, said gas inlet located in said lower section to flow gas therethrough to form a fluidized bed above said perforated plate in said upper section; an upper chamber having a discharge outlet for said gas; a plurality of conduits interconnecting said lower chamber and said upper chamber to provide a connected arrangement for gas flow therethrough; said arrangement including an inlet for the reception of solid particles to be circulated therethrough; a solid particle discharge outlet located in said upper section of said lower chamber; and said conduits having a combined cross-sectional area less than said predetermined cross-sectional area of said lower chamber.

Claim 12

Dependent Claim 17 words

Apparatus according to claim 8 in which said solid particle inlet is located in said upper chamber.

Claim 13

Dependent Claim 57 words

Apparatus according to claim 8 in which a second perforated plate extends across said upper chamber, a second gas inlet is provided in said second chamber below said second perforated plate to form a second fluidized bed above said second perforated plate, and said conduits extend into said upper chamber to terminate at said second perforated plate.

Claim 14

Dependent Claim 21 words

Apparatus according to claim 10 iN which said solid particle inlet is located in said upper section of said lower chamber.

Claim 15

Dependent Claim 27 words

Apparatus according to claim 8 in which one of said conduits has a cross-sectional area that varies in size from the cross-sectional area of any other conduit.

Claim 16

Dependent Claim 18 words

Apparatus according to claim 8 in which said conduits extend into said upper section of said lower chamber.

Claim 17

Dependent Claim 26 words

Apparatus according to claim 13 in which the length of the extension of one of said conduits is greater than the length of any other conduit.

Claim 18

Dependent Claim 21 words

Apparatus according to claim 8 in which a second gas outlet is provided in said upper section of said lower chamber.

Claim 19

Dependent Claim 32 words

Apparatus according to claim 8 in which at least two of said conduits have a spiral shape, and at least one other conduit extends vertically to be surrounded by said spiral conduits.

Claim 20

Dependent Claim 32 words

Apparatus according to claim 16 in which said conduits extend into said upper section of said lower chamber, and said vertical conduit extends further into said upper section than said spiral conduits.

Claim 21

Dependent Claim 43 words

Apparatus according to claim 8 in which a vessel encloses part of said arrangement to provide heat transfer thereto, said vessel including a further perforated plate therein, another gas inlet at its bottom portion, and another gas outlet at an upper portion thereof.

Claim 22

Dependent Claim 13 words

Apparatus according to claim 18 in which said vessel encloses only said conduits.

Claim 23

Dependent Claim 16 words

Apparatus according to claim 18 in which said vessel encloses said conduits and said upper chamber.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1976-05-28	1976-11-27	1977-05-29	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1980-05-28	1980-11-27	1981-05-29	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1984-05-28	1984-11-27	1985-05-29	$7700.00	Window Closed / Lapsed

Method of and apparatus for fluidizing solid particles

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