G - Physics – 05 – D
Patent
G - Physics
05
D
341/35
G05D 11/00 (2006.01)
Patent
CA 1053780
APPARATUS FOR CONTROLLING OPERATIONAL PARAMETERS IN A POLYMERIZATION AND RELATED METHOD ABSTRACT OF THE DISCLOSURE In apparatus for polymerizing high-pressure ethylene to produce polyethylene, a tubular reactor is connected to a source of high pressure ethylene. A piston-type intensifier pump assem- bly supplies an initiator solution to the tubular reactor. This solution includes one or more catalysts which promote the poly- merization reaction. Within the tubular reactor, a peak tempera- ture occurs in downstream proximity of the point at which the ca- talysts are introduced. If the catalysts are introduced at more than one point, a temperature peak will result downstream of each of such points. For various reasons, these peaks can be displaced along the tubular reactor from time to time as the reaction pro- ceeds. Therefore, a plurality of thermocouples are distributed at spaced positions in the tubular reactor throughout the local- ized zone in which each peak temperature might occur. These ther- mocouples generate signals which are fed into a gating arrange- ment which selects the peak signal which is compared in a compar- ator circuit with a preset reference signal representative of the peak temperature which is desired. A difference signal is gener- ated which relates to the difference between the peak temperature thermocouple signal and the reference signal with which it is com- pared. This difference signal is converted by a transducer into a pressure signal which is fed to a control valve which controls the speed of operation of the intensifier pump feeding the initi- ator into the reactor just upstream of said localized zone. If initiator is fed into the reactor at more than one point, a sepa- rate intensifier pump assembly operated by a separate set of con- trols will be provided for each point. -i-
230906
Alcorn Wardie C. (iii)
Clemmer Clyde C.
LandOfFree
Apparatus for controlling operational parameters in a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for controlling operational parameters in a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for controlling operational parameters in a... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-195981