油田采油污水污泥干燥特性实验研究

Experimental Study on Drying Characteristics for Sewage Sludge During Oil Production

以辽河油田某采油污水污泥为研究对象,在分析理化特性的基础上,研究了影响含油污泥干燥过程的因素及其规律.实验结果表明,掺煤量、粒径、干燥风温度、干燥风流量是影响油田含油污泥干燥速率的主要因素.掺煤比例越大,粒径越小,干燥风温度越高(在一定温度范围内),干燥风流量越大(在一定流量范围内),干燥速率越大;且当掺煤比例为20%,粒径为20 mm,干燥风温度为125℃时,这些因素对污泥干燥的强化效果愈加明显.

Based on the analyses of physical and chemical features of oily sludge, the influencing factors on the drying characteristics of sewage sludge in Liaohe Oil Field were studied and some conclusions were drawn as follows. The mixture ratio of coal, sludge particle size and drying air temperature and flowrate are the main influencing factors on the drying characteristics of the oily sludge, among which the last two affect to a certain extent. The greater the mixture ratio of coal, the smaller the sludge particle size; and the higher the temperature the drying air, the higher the flowrate of drying air and the drying rate. Moreover, the sludge drying effect will be obviously better if the mixture ratio of coal is about 20 %, the sludge particle size approximately 20 mm and the suitable temperature of drying air near 125℃.