处理铬酸废水用的蒸发器由花板、列管和筒身组成。使用温度120℃,承受4公斤/厘来~2的压力。花板结构,过去采用图1所示的复合板。由于铁板与34根列管的焊接以及A3钢板与筒身的焊接,引起花板温升过高,复合板脱壳无法使用。为此,设计了图2所示的法兰式结 Chromic acid wastewater treatment evaporator used by the flower board, tube and tube body composition. Operating temperature of 120 ℃, to withstand 4 kg / pound ~ 2 pressure. Flower plate structure, the past use of the composite board shown in Figure 1. Due to the welding of the iron plate and the 34 pipe and the welding of the A3 steel plate and the cylinder body, the temperature rise of the flower plate is too high and the delamination of the composite plate can not be used. To this end, the design of the flange shown in Figure 2 knot