TH6489B - Modification of fluidized bed polymerization reactor - Google Patents

Abstract

disclosed the fluidized Beck reactor and reactor operation process, including the distribution plate method for the distribution of flow that passes up into the fluidized bed, the mixing chamber is positioned under the trajectory of the spreader plate The fluid inlet path, ideally located on the reactor panel for the passage of the fluid into the reactor. The deflector trajectory is connected to the inlet trajectory, so that at least there is an ascending and outflow trajectory. fluid along the chamber wall of the mixing chamber to inhibit the accumulation of solids and liquids in the mixing chamber

Claims (6)

1. In a fluidized bed polymerization reactor with a diffuser plate path beneath the fluidized bed region designated as the mixing chamber, within such reactor in the enclosed space under the way through the aforementioned spreader plate and one or more entrance paths More than one method for the passage of fluid into the reactor is as follows. said and went through the aforementioned mixing room. The improvements include at least one of the flow deflector routes in position under the plate trajectory such spreaders and connect the path at least the trajectory one way of the entrance way flow diversion method It has been optimized to allow the flow of fluids. There are at least two paths for the fluid to enter the mixing chamber. The first fluid flow path along the wall of the mixing chamber and the The second fluid flow has an upward direction at which, during the operation, solid particles (if any) in or entering the path. Such a second flow will be directed upwards. The walls of the mixing chamber will be blown to inhibit the accumulation of such solid particles and liquid accumulation in such mixing chambers is also inhibited. The spreader plate is located under the fluidized bed area designated as The mixing chamber was formed within the reactor in the area beneath the plate path. such spreaders and one or more entrance routes This is the way at or near the base of the reactor to be. The passage of fluids into the reactor and through the mixing chamber, the improvements include the diversion method. At least one flow path is installed in the mixing chamber. and connected to at least one path of the entrance path. It is appropriate to provide at least two flow paths for the fluid to enter the mixing chamber. fluid flow path first along the wall of the aforementioned mixing chamber and the fluid flow path that way two are in an upward direction Where during operation solid particles (if any) in or entering the aforementioned secondary flow are carried upwards. accumulation of such solid particles and fluid accumulation in the mixing chamber 3. Fluidized bed reactors according to Claim 2 at which such diverter paths are generally annular and positioned above the entrance path at a distance where the first fluid flow passes through the curtain area under the path The aforementioned diverter and the second fluid flow path through hole paths in such deflector paths 4. Fluidized bed reactors according to claim 3 at which such deflector paths are generally positioned perpendicular to the axis of the reactor. 5. The fluidized bed reactor, according to Claim 3, at which the deflector path is installed is concave downwards. 6. Fluidized bed reactor according to claim 3 at which such diffuser path is mounted upward. 7. Fluidized bed reactor according to claim 3 at which the mixing chamber trajectory has a length-to-diameter ratio. medium to approx. 1.5 8. Fluidized bed reactors pursuant to Claim 7, where the said length-to-diameter ratio is within Between approx. 0.7 and approx. 10 9. Fluidized bed reactors pursuant to Claim 3 at which the ratio of the said hole path area (A2) to the curtain area area (A1) will be According to the relation (chemical formula), where do is the diameter of the aforementioned ring diverter, de is the diameter of the said inlet path, and h is the smallest distance from the lower outer edge of the deflector. Such annular flow to the wall of the mixing chamber and inside During operation HV > 0.345 kPa, where HV is the velocity pressure calculated over the total flow area. of the flow deflector 1 0. The fluidized bed reactor according to Claim 9, where the A2/A1 ratio is approximately 0.3 and (do - de)/2h is approximately 2, and at the inside During operation HV > 1.379 kPa 1 1. In the operation of the fluidized polymerization reactor The crusher has a spreader plate path installed under the bed to Both the fluid distribution and the physical support for the bed shall be provided, the entrance path at or near the base of the reactor. for the passage of fluid into the reactor and the chamber The mixer is positioned between the trajectory of the spreader plate. said and the way of such entrance and where the flow of The gas-containing flows are continuously introduced into the reactor through the mixing chamber. through the machine plate way such distribution and through such a fluidized bed, the improvement consists of dividing the incoming current into at least two currents, the first of which flows in the outflow periphery and up the wall of the The aforementioned mixing chamber and the second stream flow up in the fluid flow path. that is generally perpendicular to the aforementioned spreader plate path 1. 2. Fluidized bed reactor according to Claim 2, at which the ring diverter path has a dimension of HV > 0.345 kPa, where HV is The pressure velocity is calculated from the whole flow area. Out of the flow deflector 1 3. Fluidized bed reactor according to Claim 12 at HV > 1.379 kPa 1 4. In the operation of a fluidized bed reactor with a path The spreader plate is mounted under the bed to provide both Fluid distribution and physical support for such a bed The entrance route at or near the base of the reactor to be the passage of fluid into the reactor. In general, the way An annular fluid deflector is connected to a path. Such entrances and mixing chambers are positioned between the plate trajectories. such spreaders and their entrance paths and at the spokes A gas-containing fluid stream is introduced into the reactor. continually through the aforementioned entrance way up through the aforementioned mixing chamber Through the way of the spreader plate, the machine said and such fluidized bed sheets The improvements consist of Divide the incoming fluid current into at least two currents. The first current flows up and out in the periphery between machine way The ring deflection and the aforementioned mixing chamber wall, and the second current flows in the middle fluid-flow path going upwards. through the way Such an annular deflector total speed and direction All the fluid passages are able to pull and transmit the particles of the fluid. Solids and liquids are discharged from the mixing chamber via plate paths. such diffuser and enters the aforementioned fluidized bed 1 5. The fluidized bed polymerization reactor consists of: a. a typical cylindrical vessel; b. a diffuser plate path installed in such vessel by generally perpendicular to the axis of the said container which defines the scope of The fluidized bed area rises above the spreader plate path. and the mixing chamber area under the aforementioned diffuser plate trajectory. has entered such a mixing chamber continuously at gas velocity. sufficient to retain the particles in the fluidized bed region. in suspension and fluidized conditions d. Solution for conduction of un-polymerized gas The reaction from the fluidized bed area continued. Morrison enters the aforementioned fluidized bed area. f. Product lead method for polymer product application. g. The diverter path connected to such inlet path is optimized to divide the fluid flow at the pos. Such lemurs can flow through such entrance paths. into two or more currents that flow in the flow at least two ways in which at least one flow path has a direction up and out along the walls of the aforementioned mixing chamber and at least the This is generally directed upwards along the axis of the mixing chamber. Such current distribution is such that the velocity of the fluid flowing upwards The walls of the mixing chamber are sufficient to (1) carry the particles of solid and retains particles in the carrying fluid; and (2) inhibits the accumulation of solid particle polymer products on The walls of such mixing chambers and the velocity of the fluid flowing upwards along the central axis of the mixing chamber is sufficient to prevent the The solid particle polymer is prevented from falling into such inlet paths. Accumulation of liquid in the mixing chamber is also inhibited and The total velocity and direction of the aforementioned fluid flowing in the way Such a flow will be such that it will provide sufficient mixing to allow ensure uniformity and distribution of The polymerized fluid that enters the aforementioned fluidized zone 1 6. How to carry out the fluidized polymerization process? grinding, which consists of a. conduction of the polymerized fluid through the inlet Continuing into the mixing chamber at a speed sufficient to dong the bed. that is a particle to be in a fluidized and suspended state; b. Divide the flow of such fluid into at least two currents A current that flows in at least two flow paths, leading a fluid in at least one of those flow paths up and out. along the wall of such mixing chamber and guide the fluid in the flow path at least Here the path of the flow is up along the axis of the mixing chamber, where there is induced sufficient flow of the Such flows up the wall of the mixing chamber to (1) pull and carry solid particles. and keep the particles in the carrying fluid and (2) inhibit the accumulation of solid particle polymer products on the walls of the such mixing room The accumulation of liquids in the mixing chamber is also inhibited by the upflow of the fluid along the central axis of the Such a mixing chamber will be sufficient to prevent the polymer product. where the particles of the shin fall into such and the total velocity and the direction of such current is sufficient to ensure that mix evenly in general and such aggregate current is distributed by the time Such aggregate current reaches the upper part of the mixing chamber c. Such aggregate current is transmitted in a generally uniform manner through The horizontal gas distribution plate enters the fluidized bed area. above the aforementioned mixing chamber and the aforementioned gas diffuser plate at The total velocity is sufficient to maintain the bed of solid polymer particles. to be in suspension and fluidized condition (16 claims, 6 pages, 7 photos).