Transformation heating vulcanization
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How is the hydrogen filling vehicle connected during transformation heating vulcanization? And how does one switch hydrogen tankers? Is nitrogen purging required during switching?
1. Hydrogen tankers should be stored in a cool place, away from direct sunlight. 2. Connect the metal hose with a flange at one end to the hydrogen tank truck using an oxygen gauge (for gas welding), and secure it with clamps. 3. Connect the flange of the metal hose to the valve of the hydrogenation pipeline (the hydrogenation pipeline has been properly purged with nitrogen earlier). Further confirm that the metal hose is properly connected and secured in place. 4. When the temperature at the upper part of the catalyst reaches 200°C, open the valve that connects the flexible metal hose to the hydrogen supply hose on the hydrogenation pipeline; slightly open the valve on the hydrogen tank truck, and open the valve on the oxygen gauge, then slowly introduce hydrogen into the circulating nitrogen. 5. After introducing hydrogen into the system, control the hydrogen content in the circulating nitrogen to ~20%. 6. Nitrogen displacement is required during switching.