(1)采用一级旋风收尘器。这种收尘适用于矿渣、碎石等原料的烘干。选用镶有刚玉混凝土衬里的高效耐磨旋风收尘器作一级收尘，筒径—般1 540mm，出灰口350ram。具有处理风量大、抗磨损、抗反风和投资较低等特点，投资约为其他收尘设备的1／5。但它依靠重力进行离心分离收尘，收尘效率较低，一般只有80％一8 5％，用于矿渣烘干的收尘可达到250～300mg／Nm，不能达标排放。(2)一级旋风收尘器+组合电收尘器。这种收尘可用于废气中粉尘颗粒比较粗、湿含量过大的物料的烘干收尘，具有效率高、抗高温、抗粘堵等特点。其一级收尘器负担较重，必须适当加大设备的处理能力；另外，烘干原煤时需要加设防爆、防腐、防锈等装置，而对于高浓度、大风量的含尘烟气则不宜使用该工艺，一般废气排放浓度低于1 50mg／Nm3。(3)采用一级HPC型行喷脉冲袋式收尘器。HPC型烘干机专用行喷脉冲袋式除尘器是我公司开发研制的新型脉冲袋式除尘器，专用于
烘干机的粉尘治理。它吸收了气箱脉冲和管式喷吹除尘器的清灰技术，不但具备气箱脉冲除尘器的清灰能力强、除尘效率高、排放浓度低等特点，还具有占地面积小、单位面积处理风量大等优点。该除尘器采用了大量的新技术及高品质的零部件，其适应性、使用可靠性及自动化程度大大提高，可保证长期随主机设备运行，除尘器出口排放浓度低于国家规定的排放浓度，是烘干机粉尘治理的******设备。
cement commonly used dry dust collecting system (1) the level of cyclone dust collector. This kind of dust collecting is suitable for drying slag, gravel and other raw materials. USES with corundum concrete lining of efficient wear dust cyclone dust collector for level, drum & ndash; A 1, 540 mm, 350 ram of ash. Has a large of air, wear resistance, resistance to the wind, and the characteristics of the lower investment, investment is about 1/5 of other dust collecting equipment. But it depends on the gravity dust collecting for centrifugal separation, dust collecting efficiency is low, usually only 80% to 5%, an 8 for slag drying dust collecting can reach 250 ~ 300 mg/Nm, cannot satisfy the. (2) the level of cyclone dust collector + combination electric dust collector. This kind of dust collecting dust particles can be used in the exhaust gases fairly thick dust collecting of material drying, moisture content is too large, with high efficiency, high temperature resistance, resistance to NianDu, etc. Relatively heavy burden on the level of dust collector, it is necessary to appropriately increase the processing capacity of equipment; In addition, the need when drying raw coal adding explosion-proof, anti-corrosion, rust and other devices, and for high
