Patent ID: 9579620
Date: 2017-02-28
CPC Classifications: B01J,C01B

Claim:
1. A method to homogenize the tube temperatures between tubes in a process involving the heating of at least one fluid in a furnace that contains at least one radiation chamber with radiant walls, at least one essentially vertical row of tubes inside of which circulate the at least one fluid to be heated, and whereby said radiation chamber is equipped with burners that are used in the form of rows, whereby the at least one fluid to be heated is distributed uniformly to the tubes, and whereby the burners heat the tubes, the method comprising the steps of: a) determining the temperature of each tube; b) selecting the 50% tubes having the lowest temperatures as determined according to step a); c) realizing on each tube selected during step b) an operation that decreases the flow of the fluid distributed, entering in said tube; and d) keeping the total flow rate of the fluid unchanged, therefore distributing uniformly increased flow to the remaining tubes.