旋流器堵塞报警及处理系统的研究与应用

Study and application of the cyclone plugging warning and treatment system

邯郸洗选厂现有三产品重介质旋流器两台,用于选煤分选。旋流器日常生产过程中,由于杂物、大块等造成旋流器堵塞,由于人工发现旋流器堵塞速度较慢,根据筛子出料情况判断旋流器堵塞,虽造成了精煤混入矸石,影响到精煤质量,炼焦煤对煤中混矸石要求较高,不允许出现块状矸石,并对精煤灰分要求高。这种情况下,由于旋流器堵塞造成的煤中带矸是不允许出现的质量问题。当发生矸石混入精煤的事故后,需要将精煤场地混入的矸石全部进行返洗,以避免因矸石混入精美造成精煤质量问题投诉,进而造成更大的经济损失。及时发现旋流器堵塞,避免严重的事故已经成为我厂的重要技术攻关。通过攻关解决及时发现旋流器堵塞前兆并通过技术手段进行干预,避免旋流器堵塞、或者堵塞后及时发现并进行相应干预避免精煤中混入矸石并运行至精煤场地。

Handan Coal Washery currently has two 3-product H.M. cyclones, which can get plugged up in routine operation by foreign matters or large pieces of coal particles. The plugging of cyclone cannot be noticed in time by the operator and at the time when the operator noticed it through abnormal screen discharge, some clean coal can unavoidably get into refuse. In this case, the cyclone cleaned coal mixed with refuse has to be completely rewashed for avoiding economical loss and quality-related complaint from users as they set a high requirement on dirt content and ash of cleaned coking coal. To be able to timely detect the plugging of cyclone for avoiding the occurrence of any severe accident has become a focal point for technical solution by the washery. Application of the plugging warning system makes it possible to timely detect the early sign of blocking and take technical means to interfer with the plugging phenomenon, or immediately take corresponding measures to avoid the loss of clean coal in refuse upon detecting the plugging of cyclone.