摘要
文章分析了压滤机隔膜压榨、反吹和穿流的理论脱水效果,提出在理想状况下各种技术脱水量与设备参数、工艺参数的关系方程。分析表明,隔膜压榨的本质是提高滤饼压缩比;反吹可脱除的滤饼水分很低,其目的是保证产品品质均匀;穿流适用于对水分要求更高而压缩比无法达到的情况,为保证穿流效果应保证滤饼具有一定松散程度。根据分析结果对峰峰集团大淑村矿选煤厂KM250型压滤机存在的问题进行了分析与改进,实践表明:通过改造配套设备和提高压榨能力,缩短了单循环时间,滤饼水分比改造前降低了3%～5%。
The paper analyzed the dewatering effect on the membrane pressing, back flushing and cross -flow theories of the filter press and provided the relational equation of different technical dewatering quantity and the equipment parameters, technical parameters under the rational conditions. The analysis showed that the nature of the membrane pressing was to improve the compression ratio of the filter cake. The back flushing could remove a little of the moisture in the filter cake and the target was to ensure the even of the product quality. The cross - flow could be suitable to the high requirement of the moisture content when the compression ratio could not be reached. In order to ensure the cross - flow effect, the filter cake should be in certain loose degree. According to the analysis results, an analysis and improvement was conducted on the problems existed in the KM250 filter press in a coal preparation plant. The practices showed that with the reconstruction of the matched equipment and the improvement of the compression capacity, a single circulated time was reduced and the moisture content of the filter cake was reduced by 3% ~ 5% than before the reconstruction.
出处
《煤炭工程》
北大核心
2013年第5期114-117,共4页
Coal Engineering
关键词
压滤机
隔膜
穿流
反吹
filter press
membrane
cross - flow
back flushing
