水夹点技术用于石化行业水网络优化研究

Water Network Optimization in Petrochemical Industry Using Water Pinch Technology

运用水夹点技术,对某石化企业进行用水网络优化研究。在流量恒定和流量改变两种条件下,对某石化企业13个用水操作原有用水网络进行初始设计和优化改进。结果表明,在流量恒定和流量改变条件下,通过用水网络初始设计节约新鲜水用量分别为17.17%和13.72%,对初始设计用水网络的优化设计可简化用水网络,回用管路数分别由14条和16条减少为11条和8条,优化后的用水网络分别节约新鲜水用量17.25%和14.81%。水夹点技术在工业用水节约和废水减量方面具有实用价值和较好的应用前景。

Water network optimization in petrochemical industry was studied using water pinch technology. Existing Water network of thirteen operations in a petrochemical company was preliminarily designed and optimized by water pinch technology on the conditions of fixed flow-rate and flow-rate change. Results showed that the fresh water reduction was 17.17% and 13.72% respectively through preliminarily design on the conditions of fixed flow-rate and flow-rate change. Further optimization can simplify water network by reducing recycling pipes from fourteen and sixteen to eleven and eight, with reduction of fresh water by 17.25% and 14.81% respectively by optimized water network. Water pinch technology which can reduce fresh water and wastewater in process industry is practical and prospective.