In the construction tasks such as constant torque fastening of hydrogen production unit and flange inspection and repair of heavy oil hydrogenation unit in a refinery, our company provided advanced equipment and professional personnel to inspect, repair and fasten 584 groups of high-risk flanges, which ensured that the flange airtightness test passed once, and had remarkable ability in treating VOC emission exceeding the standard, static seal leakage and shortening the start-up time of hydrogenation unit.

    At present, the hydrogenation units and atmospheric and vacuum distillation units in the refinery have started to produce qualified products one after another, and 1200 units of heavy oil hydrogenation units have also completed the flange torque fastening work, which has been highly recognized by enterprises.