【Q&A Question 113】2016.08.11
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【Q&A Question 113】August 11, 2016: What could be the reasons why the new hydrogen compressor in diesel hydrogenation cannot achieve the required flow rate? The answer key will be available after responding; scoring is based on answering the key points. Leakage from the air valve, blockage or damage to it, wear of the piston rings, blockage of the inlet filter, leakage from the packing, or leaks in other areas.
There are many reasons, and it is mostly related to the valve; the intake and exhaust valves fail to close properly
First, the inlet filter is clogged. Second, there is a problem with the outlet check valve. Third, there is a problem with the compressor air valve, resulting in less work being done. Fourth, the pressure at the pressure inlet is low. Fifth, the amount of new hydrogen arriving is insufficient.
Air valve leakage, packing leakage, excessive clearance volume in the first cylinder; the designed clearance volume for the lower cylinder is smaller than the minimum clearance available in the actual structure
1. Valve failure 2. Clogged filter 3. Load loader failure
The return valve is open too much, the unloader is faulty, the air valve is faulty, and the inlet pressure is too low
1. Air valve leakage, 2. Internal leakage in the inter-stage return valve (return valve bypass valve), 3. Low inlet pressure
1. Poor sealing of the piston rings. 2. Leakage in the stuffing box. 3. Inadequate closure of the intake and exhaust valves. 4. High resistance to closing of the intake and exhaust valves, with delayed closure. 5. Low intake pressure
1. Air leakage in the air valves; 2. Excessive wear of the piston rings; 3. Excessively large return opening; 4. Leakage in the inter-stage heat exchanger, with fluid leaking into the circulating water; 5. Failure of the loader, resulting in some air valves not functioning
Gas valve leakage, poor piston ring sealing, etc