Aromatic hydrocarbon combination unit
Aromatic complex unit mainly includes disproportionation unit, aromatics extraction unit, continuous reforming unit, p-xylene unit, etc., including pre hydrogenation stripper, naphtha separation tower, depentanizer, debutanizer, extraction distillation tower, solvent recovery tower, disproportionation stripper, benzene tower, toluene tower, extraction tower, product tower, desorption re distillation tower, depentanizer, isomerization stripper, reforming oil separation tower, heavy aromatics tower Reformed oil AB re distillation tower, p-xylene tower, etc. are mainly plate tower, and the main internal components involved include tray assembly (float valve, tray plate, downcomer, receiving tray, liquid seal tray and corresponding support beam), oil collecting tank, gas-liquid feed distributor, distribution pipe, bolts, nuts, clips, washers and other fasteners.
● Main tray assembly
(1) Single, double and four overflow trays - single overflow tray/double overflow tray/four overflow tray
(2) Corrugated guide float valve
The corrugated guide float valve consists of herringbone corrugated valve pieces and valve legs which are arranged at both ends of the valve pieces and are connected with the valve pieces. The valve edges are arranged at both sides of the width direction of the valve pieces, so that the width of the valve pieces is greater than the width of the valve legs. There are 0~35 guide holes on the herringbone corrugated inclined plane, the two sides of the valve legs are provided with folding edges, and the ends of the valve legs are provided with valve feet. The corrugated guided float valve tray can make the gas-liquid two-phase contact evenly under the same operating conditions, reduce the liquid level gradient on the tray, and improve the mass transfer effect. It can be applied to the gas-liquid mass transfer separation tower, such as absorption tower, distillation tower, etc.
(3) Combined guide float valve
(4) Truss beam
(5) Oil collecting tank
(6) Distribution pipe - T type distribution pipe/H type distribution pipe