Problems with starting up, heating up, and pressurizing the hydrorefining unit!
Thread Content
As is well known, when starting up a hot-wall reactor in a hydrogenation unit, the temperature is usually increased first before the pressure is raised! Before the temperature drops below 93 degrees, the pressure must not exceed 1/4 of the design pressure. But generally, gasoline and kerosene hydrogenation units don’t do this; at least not here. Instead, nitrogen is first used to achieve a gas-tight seal at a pressure slightly above the operating pressure! Then heat it up and dry it! Is this done because the pressure is low? Does everyone do this?
There’s no need if the pressure is low. Old hydrogenation equipment used to have limitations regarding temperature and pressure increases. With the advancement of technology and the upgrading of equipment, modern hydrogenation units no longer have such strict requirements. Nevertheless, we still follow traditional practices; it doesn’t hurt to do so, even if it’s not necessary.
Do you mean that for hydrogenation of oil, coal, and wood, the process is carried out by first raising the temperature and then the pressure? Could you send me your project start plan for me to study? My email address is lantian0113@163.com. Thank you