(1) The selection of a reasonable nozzle eruption height is generally determined by the characteristics of the nozzle and the total height of the spray tower and the interval between the two layers of spray.
(2) Select a reasonable number of single-layer nozzles. In general, the number of nozzles is determined by the pump flow rate, head (the actual pressure of the nozzle) and the scale data of the tower. Generally, each layer is arranged with a spray pipe network, but it must be satisfied that each layer is equipped with the number of nozzles with a cover rate of more than 150%, and the length of the pipe connecting the nozzle is shortened as far as possible.
(3) When the nozzle cover height is determined in the future, the cover area of a single nozzle can be calculated, (The cover area of the nozzle is proportional to the spray view point of the nozzle and the eruption interval, and the top value of the eruption interval is 50-100 cm.
(4) Depending on the desulfurization nozzle of different raw materials to select different pressures, the maximum pressure of plastic raw materials is generally within 5 bar, 2-3 bar suitable. Stainless steel 316.310 and other cemented carbide raw materials are suitable for pressure within 2-4 bar. The pressure of silicon carbide, ceramics and other raw materials is suitable at 0.7 bar, and the big idea is not to exceed 3 bar. 1 bar =1 kg.
(5) According to the raw material selection pressure, it can also be selected through the nozzle nozzle size (flow) to select the pressure, large-scale single nozzle flow exceeds 40m3/H, regardless of the nozzle of any raw material should be selected low pressure. The wear rate of the spray droplets atomized by the nozzle with large aperture is higher than that of the small water droplets with small flow rate. The wear caused by the use of large flow nozzle under high pressure will directly affect the normal service life of nozzle. Second: The nozzle pays attention to desulfurization is the cover rate, rather than the impact force, so it only needs to reach the top value of the nozzle spray viewpoint. Third: the pressure is proportional to the flow, the use of large flow nozzle under high pressure has a direct impact on the value of the pump flow, including the reservoir outside the tower and so on.
(6) When the nozzle is placed in the glass fiber reinforced plastic desulfurization tower, select the appropriate interval between the nozzle. Generally, the nozzle distance is selected according to the nozzle spray viewpoint and the diameter of the desulfurization tower, and the nozzle placement plan of the connecting nozzle should be considered.
(7) Select a reasonable economic flow rate, and determine the diameter of the main pipe and branch pipe of the limestone slurry according to the specifications of the nozzle commodity.
(8) When checking the cover rate of the spray layer in the desulfurization tower, it is not only necessary to consider the impact of the collision between the nozzle flow and the mother pipe, branch pipe and support on the cover rate, but also the cover uniformity of all the nozzles in the desulfurization tower. In engineering planning, it is generally required that the spray cover rate in the tower is 200% ~ 300%, and the cover comparison is uniform. When selecting spray layer distance, it is also necessary to consider the impact of nozzle flow and the collision of main pipe, branch pipe and support on the cover rate.