After the deactivated catalyst enters the regenerator, the coke formed during the reaction is removed from its surface, thus restoring its chemical activity. In the regenerator, continuous level measurement and low level switches are also used to control the catalyst flow through each pass. In particular, the isotope limit switch can be calibrated according to the specific catalyst deposition situation, and the switch signal can be output on demand to optimize the process control of the regeneration process.

1769-IR6 After the catalyst is “refreshed”, it comes to the final step of the regeneration process and is stored in the regeneration catalyst hopper. The catalyst is then returned to the reactor in batches via pneumatic conveying to ensure that the total amount of catalyst in the reactor is maintained at a suitable level. The use of isotope level and limit measuring instruments helps to optimize the utilization efficiency of the regenerator and realize the efficient operation of the regenerated catalyst.

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Pressure control of pneumatic conveying of catalyst assisted by isotope instrument

Between the regenerator reduction chamber and the regenerated catalyst hopper, the reactivated catalyst also passes through a lock-in hopper, where the isotope meter is also used. The role of the latching hopper is to maintain a pressure difference between the upstream and downstream vessels that is sufficient to push the catalyst back into the reaction vessel.

1769-IR6 VEGA’s PROTRAC series of isotope meters have been carefully designed to meet the specific requirements of continuous catalyst regeneration units. In the metal catalyst feed flow, the meter enables accurate level measurement under the harsh operating conditions of high temperature and strong corrosion. At the same time, because of the non-contact measurement principle, whether it is a new construction or reconstruction project, the installation of isotope meters does not need to change the container, and can be completed during the operation of the device. VEGA isotope meters increase the safety and reliability of operation without the need for maintenance or recalibration. With decades of experience in instrumenting catalyst continuous regeneration plants around the world and close relationships with end users and patent dealers, VEGA has become a leader in level and density measurement in the petroleum refining and chemical industry.