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From: atc/nc cat
Category: Safety
Date: 20 Jan 2005
The best help you can get is from your coke cutting operator and operator's/process group willingness to perform field test and observe your result. You cannot totally eliminate deforming the guide chute but you can minimize them. From my observation the damage to the metal sheet is due to acid corossion over the period of time. The design and strength of sheet and structural support should consider the worst coke fall down scenario. Plant that I am personally aware of do it in increment of 150 cm. per section cut. The following will affect the size of falling coke. Lots of coke fines statement is relative and subjective. Small pulverized coke is not coke fines. The size of coke chunks is directly related to the following: 1) Feed charge quality 2) Temp. of the feed maintained 3) Type of coke cutting tools used 4) coke cutting water nozzle angle (` 5 to 6 deg.) 5) cutting stem rotating speed maintained 6) Vertical travel of winch/coke cutting stem 7) others Experience and proper data gathering during your actual operation is the best source of data. There is no exact SOP used by somebody that you can just read and implement. Hope this help!!!