由于注入水来自于采出液的脱后污水,虽经集输系统污水处理后,达到了回注指标要求,但污水中含有的少量悬浮物及内部的细菌,导致注水管网二次污染,最终造成部分注水井出现压高无法注入现象。为此,开展了气水脉冲清洗技术对地面注水管网进...由于注入水来自于采出液的脱后污水,虽经集输系统污水处理后,达到了回注指标要求,但污水中含有的少量悬浮物及内部的细菌,导致注水管网二次污染,最终造成部分注水井出现压高无法注入现象。为此,开展了气水脉冲清洗技术对地面注水管网进行冲刷清洗,除去了注水系统管网内壁附着物,避免了注水管网的二次污染,提高了注水开发效果。注水系统管网的干线压力由原来的19.5 MPa下降至17 MPa,注水泵运行单耗由原来的7.0 k Wh/m3降至6.5 k Wh/m3。展开更多
In the commercial utilization of rigid ceramic filters, the performance of pulse cleaning has crucial effects on the long-term stable operation. In order to get a clear insight into the nature of this cleaning process...In the commercial utilization of rigid ceramic filters, the performance of pulse cleaning has crucial effects on the long-term stable operation. In order to get a clear insight into the nature of this cleaning process and provide a solid basis for industrial applications, the flow in ceramic candle filter was investigated. The flow in the pulse-jetspace and inside the ceramic candle is regarded as two- dimensional, unsteady, compressible flow, and numerical simulation is carried out by computational fluid dynamics. The numerical predictions of flow field are in good agreement with the experimental measurements. Effects of the candle diameter, the separation distance between the nozzle and the candle injector and the length of the candle on the flowfield have been numerically analyzed to provide the basis for the optimum design of the pulse cleaning system.展开更多
文摘由于注入水来自于采出液的脱后污水,虽经集输系统污水处理后,达到了回注指标要求,但污水中含有的少量悬浮物及内部的细菌,导致注水管网二次污染,最终造成部分注水井出现压高无法注入现象。为此,开展了气水脉冲清洗技术对地面注水管网进行冲刷清洗,除去了注水系统管网内壁附着物,避免了注水管网的二次污染,提高了注水开发效果。注水系统管网的干线压力由原来的19.5 MPa下降至17 MPa,注水泵运行单耗由原来的7.0 k Wh/m3降至6.5 k Wh/m3。
基金Supported by the National Natural Science Foundation of China(No.59976023)
文摘In the commercial utilization of rigid ceramic filters, the performance of pulse cleaning has crucial effects on the long-term stable operation. In order to get a clear insight into the nature of this cleaning process and provide a solid basis for industrial applications, the flow in ceramic candle filter was investigated. The flow in the pulse-jetspace and inside the ceramic candle is regarded as two- dimensional, unsteady, compressible flow, and numerical simulation is carried out by computational fluid dynamics. The numerical predictions of flow field are in good agreement with the experimental measurements. Effects of the candle diameter, the separation distance between the nozzle and the candle injector and the length of the candle on the flowfield have been numerically analyzed to provide the basis for the optimum design of the pulse cleaning system.
