Selective placement of fluid injection in a riser reactor equipped with a horizontal tee joint connection to substantially reduce back pressure in the riser reactor

Claim 1

An apparatus for passing combined phases of an admixture of a vapor phase and fine solid particles upward through a first passageway and forcing said combined phases to a second passageway positioned at a substantially right angle with respect to said first passageway which comprises: (a) a first passageway comprising a vertical passageway having a diameter and being situated in a substantially vertical upright position, said first passageway having a plurality of side walls, an imperforate top, and a bottom portion, wherein said bottom portion of said first passageway includes an inlet means to permit entry into said first passageway of a combined fine solid particle-vapor phase stream; (b) a second passageway comprising a relatively horizontal elongated passageway situated substantially perpendicular to said first passageway and interconnecting and communicating openly at one end with a first of said side walls at an upper portion of said passageway to define a tee joint interconnection wherein a first portion of said first passageway is situated below said second passageway and a second portion of said first passageway is situated above said second passageway, and wherein said second portion terminates at said imperforate top, and wherein said second passageway communicates with, at the other end, a solid particle-vaporous phase separation means; and (c) a fluid inlet injection means selectively located juxtaposed or attached to a second of said side walls to inject fluid in a direction substantially perpendicular to the vertical axis of said first passageway and to project said fluid into said second passageway, wherein said select location of said fluid inlet injection means is below the uppermost interconnection of the first passageway and the second passageway and above the lowermost interconnection of the first passageway and the second passageway, and wherein said fluid injection at the selected situs acts to aid the volume of said fine solid particles transferred from said first passageway to said second passageway and acts to prevent the backflow of said fine solid particles from said upper portion of said first passageway to a portion of said first passageway located below said tee joint interconnection.

Claim 2

An apparatus for passing combined phases of an admixture of a vapor phase and fine solid particles upward through a first passageway and forcing said combined phases to a second passageway positioned at a substantially right angle with respect to said first passageway which comprises: (a) a first passageway comprising a vertical passageway having a diameter and being situated in a substantially vertical upright position, said first passageway having a plurality of side walls, an imperforate top, and a bottom portion, wherein said bottom portion of said first passageway includes an inlet means to permit entry into said first passageway of a combined fine solid particle-vapor phase stream; (b) a second passageway comprising a relatively horizontal elongated passageway situated substantially perpendicular to said first passageway and interconnecting and communicating openly at one end with a first of said side walls at an upper portion of said passageway to define a tee joint interconnection wherein a first portion of said first passageway is situated below said second passageway and a second portion of said first passageway is situated above said second passageway, and wherein said second portion terminates at said imperforate top, and wherein said second passageway communicates with, at the other end, a solid particle-vaporous phase separation means; and (c) a fluid inlet injection means selectively located juxtaposed or attached to a second of said side walls to inject fluid in a direction substantially perpendicular to the vertical axis of said first passageway and to project said fluid into said second passageway, wherein said select location of said fluid inlet injection means is below the uppermost interconnection of the first passageway and the second passageway and above the lowermost interconnection of the first passageway and the second passageway, and wherein said fluid injection at the selected situs acts to aid the volume of said fine solid particles transferred from said first passageway to said second passageway and acts to prevent the backflow of said fine solid particles from said upper portion of said first passageway to a portion of said first passageway located below said tee joint interconnection.

Claim 11

An apparatus for passing a hydrocarbon/fine particle size catalyst stream through a vertical riser reactor with a reduction in pressure drop having a horizontal tee joint discharge means which apparatus comprises: (a) a vertical riser reactor having a diameter and means defining an upper and lower portion and further having hydrocarbon and fine particle size catalyst entry means in the lower portion of said riser reactor; (b) a horizontal hydrocarbon and fine particle size catalyst tee joint discharge tube having a horizontal cross section interconnecting with said riser reactor at an angle of about 90° with respect to said riser reactor in open communication therewith at said upper portion of said riser reactor; and (c) at least one fluid injection means for injecting fluid comprising a vapor across said riser reactor in a plane commensurate with said horizontal cross section of said tee joint discharge tube, wherein said fluid injection means comprises at least one high pressure fluid nozzle capable of emitting vapor in a predetermined velocity of 40 ft/sec to 600 ft/sec.

Claim 12

An apparatus for passing a hydrocarbon/fine particle size catalyst stream through a vertical riser reactor with a reduction in pressure drop having a horizontal tee joint discharge means which apparatus comprises: (a) a vertical riser reactor having a diameter and means defining an upper and lower portion and further having hydrocarbon and fine particle size catalyst entry means in the lower portion of said riser reactor; (b) a horizontal hydrocarbon and fine particle size catalyst tee joint discharge tube having a horizontal cross section interconnecting with said riser reactor at an angle of about 90° with respect to said riser reactor in open communication therewith at said upper portion of said riser reactor; and (c) at least one fluid injection means for injecting fluid comprising a vapor across said riser reactor in a plane commensurate with said horizontal cross section of said tee joint discharge tube, wherein said fluid injection means comprises at least one high pressure fluid nozzle capable of emitting vapor in a predetermined velocity of 40 ft/sec to 600 ft/sec.

Claim 17

An apparatus for passing a hydrocarbon/fine particle size catalyst stream through a vertical riser reactor with a reduction in pressure drop having a horizontal catalyst tee joint discharge means which apparatus comprises: (a) a vertical riser reactor having a vertical axis and a diameter and means defining an upper and a lower portion and further having hydrocarbon and fine particle size catalyst entry means in the lower portion of the riser reactor; (b) a horizontal hydrocarbon and fine particle size catalyst tee joint discharge tube having a horizontal cross section interconnecting with said riser reactor at an angle of about 90° with respect to said riser reactor and in open communication therewith at said upper portion of said riser reactor; and (c) at least one liquid injection means for injecting liquid across said riser reactor in a plane commensurate with said horizontal cross section of said tee joint discharge tube and into said horizontal tee joint discharge tube wherein said liquid injection means comprises at least one injection nozzle suitable for injecting said liquid in a particle size of from 100 to 500 microns and at a pressure drop of from 50 to 100 lbs/sq. in. to cause sudden vaporization of said liquid to a vapor and to thereby create a force which aids the passage of said fine particle size catalyst into said horizontal tee joint discharge tube.

Claim 18

An apparatus for passing a hydrocarbon/fine particle size catalyst stream through a vertical riser reactor with a reduction in pressure drop having a horizontal catalyst tee joint discharge means which apparatus comprises: (a) a vertical riser reactor having a vertical axis and a diameter and means defining an upper and a lower portion and further having hydrocarbon and fine particle size catalyst entry means in the lower portion of the riser reactor; (b) a horizontal hydrocarbon and fine particle size catalyst tee joint discharge tube having a horizontal cross section interconnecting with said riser reactor at an angle of about 90° with respect to said riser reactor and in open communication therewith at said upper portion of said riser reactor; and (c) at least one liquid injection means for injecting liquid across said riser reactor in a plane commensurate with said horizontal cross section of said tee joint discharge tube and into said horizontal tee joint discharge tube wherein said liquid injection means comprises at least one injection nozzle suitable for injecting said liquid in a particle size of from 100 to 500 microns and at a pressure drop of from 50 to 100 lbs/sq. in. to cause sudden vaporization of said liquid to a vapor and to thereby create a force which aids the passage of said fine particle size catalyst into said horizontal tee joint discharge tube.