SPRING NOZZLE WITH 360 DEGREE SLOT, FOR LIQUID INJECTION INTO A FLUIDIZED BED REACTOR

SPRING NOZZLE WITH HOLES

SPRING NOZZLE WITH 360 DEGREE SLOT, FOR INJECTING LIQUID INTO A FLUIDIZED BED REACTOR

Process for the introduction of liquid into a continuous process for the gas-phase polymerisation of an olefin monomer and one or more other alpha-olefins in a fluidised-bed reactor, characterised in that the liquid is introduced by means of at least one nozzle comprising a feed pipe (1) and a sleeve (2) sliding inside and at the end of the said pipe, the position of the said sleeve along the feed pipe being determined by the pressure of the feed liquid (3) and the return force of a preloaded spring (4) the said spring having one end fixed to the sleeve and the other end to the feed pipe, the sleeve being provided with one or more recesses (10) along its surface for sliding with the feed pipe, the said recesses emerging in a groove (11) around the circumference of the sleeve and below a circular stop (8) integral with the same sleeve, the said stop resting, when the nozzle is not in use, on a rim (9) of the end of the feed pipe, the said rim and the circular stop of the sleeve each being provided with a bearing surface (12, 13), the contact area of which being minimised in order to allow good sealing.

Spring nozzle for injecting condensed liquid into polymerisation reactor comprises inlet pipe and sleeve with orifices sliding inside and at pipe end returned by spring

The liquid injector nozzle comprises an inlet pipe (1) with a sleeve (2) sliding inside and at the end of the pipe. The position of the sleeve along the pipe is induced by the supply liquid pressure (3) and the return force of a calibrated spring (4). The sleeve has a number of orifices (10,11). The spring is fixed at the downstream end of the pipe to a stop by a hollow circular piece onto an internal circular edge (5) in the pipe. The other end is fixed by another circular piece held by a nut (6) screwed onto a rod (7) integral with the sleeve. When the nozzle is out of use the circular stop (8) rests on the edge of the supply pipe end. The pipe edge and the sleeve stop have support surfaces (12,13) giving good sealing.

Process for introducing a liquid in a fluidized bed

Process for the introduction of liquid into a continuous process for the gas-phase polymerization of a olefin monomer and one or more other alpha-olefins in a fluidized-bed reactor, the liquid being introduced by at least one nozzle having a feed pipe and a sleeve sliding inside and at the end of the pipe, the position of the said sleeve along the feed pipe being determined by the pressure of the feed liquid and the return force of a preloaded spring, the spring having one end fixed to the sleeve and the other end to the feed pipe, the sleeve being provided with one or more recesses along its surface for sliding with the feed pipe, the recesses emerging in a groove around the circumference of the sleeve and below a circular stop integral with the same sleeve, the stop resting, when the nozzle is not in use, on a rim of the end of the feed pipe, the rim and the circular stop of the sleeve each being provided with a bearing surface, the contact area of which is minimized to allow good sealing.

Process for introducing a liquid in a fluidised bed

Process for the introduction of liquid into a continuous process for the gas-phase polymerisation of an olefin monomer and one or more other alpha-olefins in a fluidised-bed reactor, characterised in that the liquid is introduced by means of at least one nozzle comprising a feed pipe (1) and a sleeve (2) sliding inside and at the end of the said pipe, the position of the said sleeve along the feed pipe being determined by the pressure of the feed liquid (3) and the return force of a preloaded spring (4) the said spring having one end fixed to the sleeve and the other end to the feed pipe, the sleeve being provided with one or more recesses (10) along its surface for sliding with the feed pipe, the said recesses emerging in a groove (11) around the circumference of the sleeve and below a circular stop (8) integral with the same sleeve, the said stop resting, when the nozzle is not in use, on a rim (9) of the end of the feed pipe, the said rim and the circular stop of the sleeve each being provided with a bearing surface (12, 13), the contact area of which being minimised in order to allow good sealing.

Process for introducing a liquid in a fluidised bed

PROCESS FOR TH INTRODUCTION OF LIQUID INTO A CONTINUOUS PROCESS FOR THE GAS-PHASE POLYMERIZATION OF AN OLEIN MINOMER AND ONE OR MORE OTHER ALPHA -OLEFINS IN A FLUIDISED-BED REACTOR, CHARACTERISED IN THAT THE LIQUID IS INTORDUCED BY MEANS OF AT LEAST ONE NOZZLE COMPRISING A FEED PIPE (1) AND A SLLEVE (2) SLIDING INSIDE AND AT THE END OF THE SAID PIPE (1) THE POSITION OF THE SAID SLEEVE ALONG THE FEED PIPE (1) BEING DETERMINED BY THE PRESSURE OF THE FEED LIQUID (3) AND THE RETURN FORCE OF A PRELOADED SPRING (4) HAVING ONE END FIXED TO THE SLEEVE (2) BEING PROVIDED WITH ONE OR MORE RECESSES (10) ALONG ITS SURFACE FOR SLIDING WITH THE FEED PIPE, THE SAID RECESSES (10) EMERGING IN A GROOVE (1) AROUND THEBCIRCUMFERENCE OF THE SLEEVE AND BELOW A CIRCULAR STOP (8) INTEGRAL WITH THE SAME SLEEVE, THE SAID STOP RESTING, WHEN THE NOZZLE IS NOT IN USE, ONE A RIM (9) OF THE END OF THE FEED PIPE, THE SAID RIM (9) AND THE CIRCULAR STOP (8) OF THE SLEEVE EACH BEING PROVIDED WITH A BEARING SURFACE (12) AND (13) THE CONTACT AREA OF WHICH BEING MINIMISED IN ORDER TO ALLOW GOOD SEALING. (FIG.1)

METHOD FOR INPUTING A LIQUID IN A FLUID BED

Process for introducing a liquid in a fluidised bed

Process for the introduction of liquid into a continuous process for the gas-phase polymerisation of an olefin monomer and one or more other alpha-olefins in a fluidised-bed reactor, characterised in that the liquid is introduced by means of at least one nozzle comprising a feed pipe ( 1 ) and a sleeve ( 2 ) sliding inside and at the end of the said pipe, the position of the said sleeve along the feed pipe being determined by the pressure of the feed liquid ( 3 ) and the return force of a preloaded spring ( 4 ) the said spring having one end fixed to the sleeve and the other end to the feed pipe, the sleeve being provided with one or more recesses ( 10 ) along its surface for sliding with the feed pipe, the said recesses emerging in a groove ( 11 ) around the circumference of the sleeve and below a circular stop ( 8 ) integral with the same sleeve, the said stop resting, when the nozzle is not in use, on a rim ( 9 ) of the end of the feed pipe, the said rim and the circular stop of the sleeve each being provided with a bearing surface ( 12, 13 ), the contact area of which being minimised in order to allow good sealing.

Method of introducing a fluid into a fluidized bed

Verfahren zum einspeisen einer flüssigkeit in eine wirbelschicht