RU99127328A - DEVICE FOR THE INTRODUCTION OF A FLUID INTO A TECHNOLOGICAL FLOW - Google Patents

Claims (10)

1. A device for introducing a fluid into a process stream having (a) a pipe for supplying a process stream, this pipe having a bend, and (b) a nozzle for introducing a fluid into the process stream along the stream after bending, characterized in that the nozzle has a flow-correcting device located upstream after bending, and the nozzle is mounted upstream after the flow-correcting device at the end of the support arm, which extends almost parallel to the inside of the nozzle Yelnia direction of pipe after bending. 2. The device according to claim 1, in which the bending angle of the pipe is approximately 40 - 120 ^o , preferably about 45 - 100 ^o . 3. The device according to claim 1, in which the bend angle of the pipe is approximately 90 ^o .  4. The device according to any one of the preceding paragraphs, in which the support arm is a tube connected to a feeding device for supplied through the nozzle fluid.  5. The device according to any one of the preceding paragraphs, in which the flow-correcting device has a housing provided with a plurality of longitudinal channels extending substantially parallel to the direction of the pipe in the direction of flow after bending.  6. The device according to any one of paragraphs. 1-4, in which the flow-correcting device is a plate with holes.  7. A fixed-bed reactor for producing vinyl acetate, which is a reactor with a catalytic bed contained therein and equipped with an inlet for a process stream including acetic acid vapors, ethylene and an oxygen-containing gas, and for a fluid supplied through a nozzle, which is a solution of potassium acetate and this inlet device is a device according to any one of the preceding paragraphs.  8. The reactor according to claim 7, in which a distribution plate is mounted over part of the catalytic layer, oriented almost perpendicular to the direction of the pipe in the direction of flow after bending. 9. A method of producing vinyl acetate in a fixed bed reactor, the implementation of which provides for the following stages
(I) installing a nozzle having a bend and a flow-correcting device placed downstream after bending,
(II) the connection of the pipe with the reactor with a fixed bed,
(III) installing the nozzle, which is mounted on the end of the support arm,
(IV) placing the nozzle in the nozzle so that this nozzle is in the direction of flow after bending and after the flow-correcting device, and the support arm passes inside the nozzle in a direction substantially parallel to the direction of the nozzle in the direction of flow after bending,
(V) the supply through the pipe to the reactor of the technological stream of reagents, including acetic acid, ethylene and oxygen,
(VI) feeding the catalytic promoter in the form of a fluid through the nozzle into the process stream to deposit the promoter on the catalytic layer; and
(Vii) reacting ethylene, acetic acid and an oxygen-containing gas in a reactor to produce vinyl acetate.  10. The method of claim 9, wherein the fixed bed reactor is a fixed bed reactor according to claim 7 or 8.