PP/PVC 喷淋塔/spray tower scrubber for waste gas treatment

喷淋塔

一、工作原理

废气由风管引入净化塔，经过填料层，废气与吸收液进行气液两相充分接触吸收中和反应，废气经过净化后，再经除雾板脱水除雾后由风机排入大气。吸收液在塔底经水泵增压后在塔顶喷淋而下，最后回流至塔底循环使用。净化后的酸雾废排放标准的排放要求。

二、特点

1.设备占地少，安装方便；

2.耗水、耗电指标较低；

3.耐腐蚀、不磨损，使用寿命长；

4.设备运行可靠，维护简单、方便。

三、结构

喷淋塔内填料层作为气液两相间接触构件的传质设备。填料塔底部装有填料支承板，填料以乱堆方式放置在支承板上。填料的上方安装填料压板，以防被上升气流吹动。喷淋塔喷淋液从塔顶经液体分布器喷淋到填料上，并沿填料表面流下。气体从塔底送入，经气体分布装置分布后，与液体呈逆流连续通过填料层的空隙，在填料表面上，气液两相密切接触进行传质。 当液体沿填料层向下流动时，有时会出现壁流现象，壁流效应造成气液两相在填料层中分布不均，从而使传质效率下降。因此，喷淋塔内的填料层分为两段，中间设置再分布装置，经重新分布后喷淋到下层填料上。

四、使用范围

应用在酸碱性废气处理工作中的主要废气处理设备，可以处理化工厂、橡胶厂、喷漆房、塑料厂等多种场所的废气，对于带有矿尘、砷、硒、氟、二氧化硫等杂质的有害气体处理效果最理想，经过处理处理的废气有塔顶排出，可以在填料层当中与气体充分的接触，达到净化处理气体的作用。洗涤塔处理的主要有害气体为硫酸雾、盐酸雾、铬酸雾、硝酸雾、磷酸雾、氢氟酸雾、氯化氢、氟化氢、硫化氢、氰化氢等高污染行业的废气进行吸收、净化处理，达到工艺要求，其效果比传统的填料塔和板式塔均有较大优势。适用于 电镀生产、表面处理、单晶硅酸洗、半导体清洗、电子制造、涂装生产等行业及领域

PP/PVC spray tower scrubber for waste gas treatment

Purified by acid mist exhaust duct into tower, after the packing layer, the waste gas with sodium hydroxide absorption liquid gas liquid two phase fully contact the neutralization reaction, acid mist exhaust after purification, then through mist plate after dehydration mist fan by the atmosphere. The absorber is sprayed on the top of the tower after being pressurized by the water pump, and then it is recycled back to the bottom of the tower. After purification, the acid mist exhaust emissions meet the emission requirements of local emission standards in guangdong province, which is below the national emission standard.

As a mass transfer device for the two-phase contact member of the air liquid. Packing support plate is installed in the bottom of the packing tower and the packing is placed on the support plate in a random pile. The packing gland is mounted on the top of the packing to prevent the air flow from rising. Spray column spray from the top of the tower is sprayed onto the packing by liquid distributor and flow down the surface of the packing. The gas is fed from the bottom of the tower. After the distribution of the gas distribution device, the liquid will flow upstream through the interstice of the packing layer, and the liquid will be transmitted in close contact with the air liquid on the surface of the packing. When the liquid flows downward along the packing layer, the wall flow phenomenon sometimes occurs, and the wall flow effect causes the distribution of the gas liquid in the packing layer, thus reducing the mass transfer efficiency. Therefore, the packing layer in the spray tower is divided into two sections, and the intermediate redistributing device is set in the middle and sprayed onto the lower layer of filler after redistribution