Energy-saving renovation of the new hydrogen compressor in hydrocracking
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Dear experts: Regarding the energy-saving renovation project for the new hydrogen compressors in our factory’s hydrocracking unit, we have the following questions: 1. With the existing Herbig system, the compressor must be operated at over 70% load in order to start; otherwise, the motor of that compressor is prone to excessive shaft vibration, which can lead to automatic shutdown； (The stepless speed control system has no shipping function.) 2. Reducing the number of discs in the inlet and outlet valves at each stage of the existing compressor from 4 to 2 will lower the efficiency of the compressor. (After reducing the valve disc, this compressor has no means of adjustment.) What are your thoughts on this issue? Thank you
This is a problem with Holberg’s variable air volume control system~~~ It’s impossible to determine the cause of the fault due to unclear descriptions~~~ No one would use the second solution~~~ Hehe~~ Holberg’s variable control technology is quite good, but it should be installed on each inlet valve~~~ So, by using the second solution, you’re essentially reducing the compressor’s load by 50%; in this condition, variable control can still be utilized~~~ Additionally! Who runs a compressor at 70% load? Even with a traditional two-position fork pressing system, 0% startup can be achieved~~~~
1. With Holbig’s stepless adjustment system, the original 2-position fork system’s 0% startup function should be maintained； (I can’t guarantee it; in that case it’s a fault with the continuous adjustment mechanism.) 2. This means that manually reducing the compressor’s rated load by half~~~~ But if the continuous adjustment mechanism still works, then load adjustment is still possible – so why is it said that it’s not possible? ? ? Additionally, the stepless adjustment designed by Holbigg enables wide-range control from 0 to 100% load, which is unmatched by other technologies (such as adjustable clearance, etc.)~~~~ If this goal cannot be achieved, turn to the after-sales service of Holbigg (China) to resolve the issue~~~ (The details provided by the original poster are not sufficient to make a judgment~~~)
Hörlig’s variable air volume can be adjusted from 0% to 100%. It should be noted that the optimal operating range for this variable air volume is 30% to 70%; above 70%, it is nearly at full load, and there is no need to use the variable air volume feature anymore