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For the initial draining/depressurizing of the reactors, separate drain control room-operated HIC control valves are provided at the bottoms of the RGB and the Alkylation Reactor. The RGB and Alkylation Reactor are to be drained to the Benzene Recovery Column feed location with the Benzene Column Reboiler shut down (refer to Benzene Recovery Column section for further discussion). In the event of an emergency, the RGB and Alkylation Reactor vessels can each be isolated at the inlet and outlet from the control room using the feed control valves, reactor backpressure control valve and a remote operated valve located between the RGB and the Alkylation Reactor. Manual block valves at the RGB and Alkylation Reactor feed and effluent lines provide the capability to establish double block and bleed isolation so that the vessel can be blinded. The Reactor Feed Pump installation includes a flow control minimum flow bypass control system. The flow controller is intended to be left set at the pump minimum continuous flow requirement provided by the pump supplier. Last edited by beileim1 on 2009-2-3 16:15]
draining: draining/depresurizing; HIC (Hand indicator controller): RGB? Alkylation Reactor: An alkylation reactor; double block and bleed: A valve system configuration in which a full-flow vent valve is installed in a pipeline between two shut-off valves to provide a means of releasing excess pressure between them. Please don’t write long paragraphs – identify the difficult points so we can discuss them together! This post was last edited by GZQBRAVE on 2009-2-3 18:42]
I originally wanted to add more wealth, but due to limited permissions, only 10 units of wealth can be added at most
Then post it in multiple small sections. No one can come up with a \"perfectly fluent and accurate\" translation right away; it can only be refined step by step. No one is perfect at translation!