Study Of Water-saving Application Of Process Integration In Petrochemical Production

Process industry not only consume large amounts of fresh water, but emit a considerableamount of wastewater, which is an important source of natural discharges of pollutants. In recentyears, increasing pollution and waste of water resources has become a problem of our economicdevelopment problems. It also made for industrial process water-saving abatement requirements.Process integration technology for the study of water conservation abatement provided technicalsupport and systematic approach. It has made some progress in the research process. But inactual industrial production, many problems remain to be to find and solutions to complexsystem applications that have certain difficulties. Against this background, this paper tries tooptimization design to water-using network on the production system. On the basis of summingup the results of relevant research about process integration technology, water-pinch technologyin process integration technology is applied to water-using network of petroleum chemicalindustry production. The status quo of water-using unit in petro chemical enterprises andwater-saving potential are a comprehensive analysis. With a view to saving water and drop waterpollution petro chemical provide some theoretical guidance. The content of this paper are asfollows: 1. Application of water-point technology can effectively conserve fresh water consumption ofindustrial processes and significantly reduce wastewater emissions. This paper introduces originand development of water-pinch technology, especially on the high of the status quo ofwater-pinch technology at home and abroad, and discusses on the main way of water-pinchtechnology approach.2. In order to study further applizations of water-pinch technology in process industry, thepaper investigates thorough water balance for process water-using network of a petrochemicalenterprise, and draws the water network diagram of every production unit. On this basis that thepaper investigates water source and water sink according crafts, the use of public works andother classifications, and configurates the relative priority of water level, and measures devicesof various flow and water quality factors.20 clean dowmflow of water-pinch retrofit is presentedfrom among process integration technology. It provides technical point of water-pinch in thepetroleum chemical enterprises and the scientific basis for application of water-pinch technology.3. Applications of water-pinch technology in water network, first water-using minimizating isregarded as important goals, and use water-pinch analysis to optimize of the structure of thewater network .The paper presents a simplified method to meet design of multiple contaminantwater-using network towards this difficult problem. The method simplifies the network ofmultiple contaminant to the network impurity contaminant through appropriate analysis.Finally,the paper establishes minimum flow of fresh water and wastewater emissions of the smallestthrough that build-up to based on the mathematical model of water-pinch technology.Usewater-pinch technology to optimize the water-using network, thus attain the purpose of the savewater.