Abstract: A thermal barrier coating and a cold-wall reactor including the coating are provided. A second ceramic layer is sandwiched between the conventional two-layer structures of the thermal barrier coating. The second ceramic layer is made of aluminum oxide stabilized zirconium oxide and the content of aluminum oxide does not exceed 30 wt %. The zirconium oxide in the first and second ceramic layer has a tetragonal crystal structure. A cold-wall reactor formed by applying the thermal barrier coating provides advantageous steel hydrogen corrosion resistance in ultra-high temperature. The effective volume of the hydrogenation reactor is fully used, overcoming the problem that the thermal insulation liner is easily damaged and causes local overheating of the reactor wall, as well as eliminating potential safety hazards of reactor wall local stress concentration caused by expansion and contraction of the liner cylinder attachment member.

Abstract: A thermal barrier coating and a cold-wall reactor including the coating are provided. A second ceramic layer is sandwiched between the conventional two-layer structures of the thermal barrier coating. The second ceramic layer is made of aluminum oxide stabilized zirconium oxide and the content of aluminum oxide does not exceed 30 wt %. The zirconium oxide in the first and second ceramic layer has a tetragonal crystal structure. A cold-wall reactor formed by applying the thermal barrier coating provides advantageous steel hydrogen corrosion resistance in ultra-high temperature. The effective volume of the hydrogenation reactor is fully used, overcoming the problem that the thermal insulation liner is easily damaged and causes local overheating of the reactor wall, as well as eliminating potential safety hazards of reactor wall local stress concentration caused by expansion and contraction of the liner cylinder attachment member.

Abstract: A pressure reducing valve and a pressure reducing system are provided. The pressure reducing valve includes a main valve body in which a valve chamber is formed; the main valve body is provided with a valve outlet and a valve inlet communicating with the valve chamber; and at least two pressure reducing devices adapted between the valve inlet and the valve outlet to depressurize the fluid at the valve inlet and discharge to the valve outlet. The pressure reducing valve occupies a small space, low cost and low pressure leakage point. Each pressure reducing device shares a main valve body, independent of each other, do not interfere with each other, and can be flexible to switch or use at the same time. The pressure reducing system is provided with at least one regulating member, which comprising an adjustment medium outlet section which communicates with the valve chamber through the valve body and the valve seat.