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US 5,378,434 AGranted
Fluidized multistaged reaction system for polymerization
AssigneesProcedyne Corp., David Bruce
InventorsKenneth H. Staffin, David S. Bruce
Life of this patent
Estimating the term…
Abstract
This invention relates to a novel horizontal fluid bed reactor, which in a single unit, provides for the polymerization of monomer to polymer and mixed monomers to co-polymers. Within one reactor shell the reactor contains a plurality of polymerization stages which permit the achievement of narrow residence time distribution of the produced polymer. This arrangement also creates a sufficiently tight subdivision of the reactor volume which permits a plurality of gas circulation stages of different gas compositions, as well as, polymerization temperatures.
Claims12
A fluidized bed apparatus suitable for use in polymerization reactions comprised of:
- a) a single horizontal fluid bed reactor vessel;
- b) a gas distributor plate extending horizontally within the vessel and being constructed and arranged for passage of gas therethrough for fluidizing particulate material;
- c) an inlet means permitting the introduction into the vessel of solid particulate materials utilized in the polymerization reactors;
- d) zone dividing walls which divide the vessel into a plurality of zones and which extend substantially perpendicular to and above and below the distributor plate;
- e) baffles within each zone which divide the zones into a plurality of stages;
- f) the baffles having apertures for permitting polymerized material to flow and be introduced into the next downstream stage by fluidized horizontal flow;
- g) at least one zone dividing wall having an aperture permitting a polymerized material to be introduced into the next downstream zone by fluidized horizontal flow;
- h) inlet means associated with each zone for permitting entry of a gaseous component capable of being polymerized into each stage and in such a manner through the distributor plate to maintain fluidization integrity of the particulate material and particles as they are transported between stages and between zones;
- i) gas outlet means associated with each zone for removing the gaseous component from each zone;
- j) outlet means permitting the removal of polymerized material from the vessel;
- and
- k) recycling means for recycling the gaseous monomer exiting through the gas outlet means, said means being in communication with the inlet means for introducing gaseous monomer to each stage, said recycling means being individual for each of the inlet means;
- l) gaseous supply means separate and independent for each zone;
- m) said inlet means being further in communication with the gaseous supply means.
11 more elements
A fluidized bed apparatus suitable for use in polymerization reactions comprised of:
- a) a single horizontal fluidized bed reactor vessel;
- b) a gas distributor plate extending horizontally within the vessel and being constructed and arranged for passage of gas therethrough for fluidizing particulate material;
- c) an inlet means permitting the introduction into the vessel of solid particulate materials utilized in the polymerization reactions;
- d) zone dividing walls which divide the vessel into a plurality of zones and which extend substantially perpendicular to and above and below the distributor plate;
- e) baffles within each zone which divide the zones into a plurality of stages;
- f) the baffles having apertures for permitting polymerized material to be transported due to fluidized gravity flow of polymerized material in the form of growing polymer particles and permitting the polymerized material to be introduced into the next downstream stage by fluidized horizontal flow;
- g) at least one zone dividing wall having an aperture permitting the polymerized material to be introduced into the next downstream zone by fluidized horizontal flow;
- h) inlet means associated with each zone for permitting entry of a gaseous component capable of being polymerized into each stage and in such a manner through the distributor plate to maintain fluidization integrity of the particulate material and particles as they are transported between stages and between zones;
- i) gas outlet means associated with each zone for removing the gaseous component from each zone;
- j) outlet means permitting the removal of polymerized material from the vessel;
- and
- k) recycling means for recycling the gaseous monomer exiting through the gas outlet means, said recycling means being in communication with the inlet means for introducing gaseous monomer to each stage, said recycling means being individual for each of the inlet means;
- l) gaseous supply means separate and independent for each zone;
- m) said inlet means being further in communication with the gaseous supply means.
11 more elements
A fluidized bed apparatus suitable for use in polymerization reactions comprised of:
- a) a single horizontal fluidized bed reactor vessel;
- b) a gas distributor plate extending horizontally within the vessel and being constructed and arranged for passage of gas therethrough for fluidizing particulate material;
- c) an inlet means permitting the introduction into the vessel of solid particulate materials utilized in the polymerization reactions;
- d) zone dividing walls which divide the vessel into a plurality of zones and which extend substantially perpendicular to and above and below the distributor plate;
- e) baffles within each zone which divide the zones into a plurality of stages;
- f) the baffles having apertures for permitting polymerized material to flow and be introduced into the next downstream stage by fluidized horizontal flow;
- g) at least one zone dividing wall having an aperture permitting the polymerized material to be introduced into the next downstream zone by fluidized horizontal flow;
- h) inlet means associated with each zone for permitting entry of a gaseous component capable of being polymerized into each stage and in such a manner through the distributor plate to maintain fluidization integrity of the particulate material and particles as they are transported between stage and between zones;
- i) gas outlet means associated with each zone for removing the gaseous component from each zone and heat associated with the polymerization reaction;
- j) outlet means permitting the removal of polymerized material from the vessel;
- and
- k) recycling means for recycling the gaseous monomer exiting through the gas outlet means, said recycling means being in communication with the inlet means for introducing gaseous monomer to each stage, said recycling means being individual for each of the inlet means, said recycling means being provided with cooling means for reducing the temperature of the gaseous monomer;
- l) gaseous supply means separate and independent for each zone;
- m) said inlet means being further in communication with the gaseous supply means.
11 more elements
A fluidized bed apparatus suitable for use in polymerization reactions comprised of:
- a) a single horizontal fluidized bed reactor vessel;
- b) a gas distributor plate extending horizontally within the vessel and being constructed and arranged for passage of gas therethrough for fluidizing particulate material;
- c) an inlet means permitting the introduction into the vessel of solid particulate materials utilized in the polymerization reactions;
- d) zone dividing walls which divide the vessel into a plurality of zones and which extend substantially perpendicular to and above and below the distributor plate;
- e) baffles within each zone which divide the zones into a plurality of stages;
- f) the baffles having apertures for permitting polymerized material to flow and be introduced into the next downstream stage by fluidized horizontal flow;
- g) at least one zone dividing wall having an aperture permitting the polymerized material to be introduced into the next downstream zone by fluidized horizontal flow;
- h) inlet means associated with each zone for permitting entry of a gaseous component capable of being polymerized into each stage and in such a manner through the distributor plate to maintain fluidization integrity of the particulate material and particles as they are transported between stages and between zones;
- i) gas outlet means associated with each zone for removing the gaseous component from each zone;
- j) outlet means permitting the removal of polymerized material from the vessel;
- and
- k) recycling means for recycling the gaseous monomer exiting through the gas outlet means, said recycling means being in communication with the inlet means for introducing gaseous monomer to each stage, said recycling means being individual for each of the inlet means;
- l) gaseous supply means separate and independent for each zone, the gaseous supply means being comprised of a plurality of gas lines permitting selection of at least one gaseous monomer individual to each zone:
- m) said inlet means being further in communication with the gaseous supply means.
11 more elements
A fluidized bed apparatus suitable for use in polymerization reactions comprised of:
- a) a single horizontal fluidized bed reactor vessel;
- b) a gas distributor plate extending horizontally within the vessel and being constructed and arranged for passage of gas therethrough for fluidizing particulate material;
- c) an inlet means permitting the introduction into the vessel of solid particulate materials utilized in the polymerization reactions;
- d) zone dividing walls which divide the vessel into a plurality of zones and which extend substantially perpendicular to and above and below the distributor plate;
- e) baffles within each zone which divide the zones into a plurality of stages;
- f) the baffles having apertures for permitting polymerized material to be transported due to fluidized gravity flow of polymerized material in the form of growing polymer particles and permitting the polymerized material to be introduced into the next downstream stage by fluidized horizontal flow;
- g) at least one zone dividing wall having an aperture permitting the polymerized material to be introduced into the next downstream zone by fluidized horizontal flow;
- h) inlet means associated with each zone for permitting entry of a gaseous component capable of being polymerized into each stage and in such a manner through the distributor plate to maintain fluidization integrity of the particulate material and particles as they are transported between stages and between zones;
- i) gas outlet means associated with each zone for removing the gaseous component from each zone and heat associated with the polymerization reaction;
- j) outlet means permitting the removal of polymerized material from the vessel;
- and
- k) recycling means for recycling the gaseous monomer exiting through the gas outlet means, said recycling means being in communication with the inlet means for introducing gaseous monomer to each stage, said recycling means being individual for each of the inlet means, said recycling means being provided with cooling means for reducing the temperature of the gaseous monomer;
- l) gaseous supply means separate and independent for each zone, the gaseous supply means being comprised of a plurality of gas lines permitting selection of at least one gaseous monomer individual to each zone;
- m) said inlet means being further in communication with the gaseous supply means.
11 more elements
Dependencies are inferred from the claim text.