Operating conditions for the installation of the UOP adsorption separation rotary valve ACCS operating system

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Conditions for starting up: Confirm that the adsorption tower, pumping and pressurizing systems, as well as the check valve flushing are complete; that the valve in the raffinate tank is open; that the raffinate control valve PIC-6003 and the automatic circulation pump are operating properly; that the flow rate controlled manually by pump FIC-6008 corresponds to the flow rate required in Zone 2; and that the flow rates controlled manually by pump PIC-6001 and those from the pumping system are normal, with the control valves operating automatically. The flow rate at the arch top of the in/out rotary valve is normal, and the hydraulic system of the rotary valve is also functioning properly. The rotary valve was manually moved into position once on-site: among the valves with position control, one suction valve was adjusted to 5-10% closed. After PIC-6001 was set to automatic mode to open the valve in the rotary valve channel, the rotary valve was vented once, and the exhaust gas was pumped out once. Set the pressure at the top of the transfer valve to 1.0 MPa. Move the button for lowering the transfer valve on the auxiliary control panel to the lowering position; simultaneously, use the button on the hydraulic oil monitoring screen to increase the pressure at the top of both transfer valves by 2 MPa. Pay attention to ensure that the transfer valves operate properly, and once the pressure reaches 1.11 MPa, close the bypass valve of the transfer valve as well as the common suction valve. During this process, make sure that the pressure in the adsorption tower remains normal. In Zone 2, set FIC-6008 to automatic mode. If there are large fluctuations in the pressure of the adsorption tower and the circulation flow rate, consider using vents 7.A-2602 and 2604 to establish a hot air circulation system. What are the precautions for this?