Research On The Technology Of Water Quality Stabilization Of Circulating Water In YANCHANG Petrochemical Plant

In this paper, the technology of water quality stabilization of circulating water in YANCHANG petrochemical plant is studied, the main purpose is to improve the utilization rate of industrial water, save water, save the cost of equipment maintenance of the enterprise. After the use of circulating cooling water, the ion such as Ca2+, Mg2+,Cl-, etc. dissolved solids and suspended solids increase accordingly, air pollutants such as dust, debris, soluble gas and heat exchanger leakage, etc., can enter the circulating cooling water, The equipment and pipeline in the circulating cooling water system corrupt and scale, which reduce the heat transfer efficiency of the heat exchanger, reduce the water cross section, and even cause the corrosive perforation of pipeline of the equipment. To solve these problems in the circulating cooling water system, we must carry out comprehensive treatment. Using water quality stabilization technology, the method of combining physical and chemical treatment to control and improve water quality, so that the circulating cooling water system in the corrosion, scaling, microbial fouling was effectively resolved, thereby saving water, energy saving good benefit.By water quality analysis, corrosion rate determination, adhesion rate determination, and so on, water treatment agent system for the circulating water quality of YANCHANG petrochemical plant has been obtained. The results show that: using WTS-306 as cleaning liquid agent, using WTS-307 B as cleaning corrosion inhibitor, cleaning liquid is obtained, which has a strong cleaning ability to rust and scale, has a simple cleaning condition, and the cleaning corrosion rate can be controlled in less than or equal to 2.89g/m2.h; adopting WTS-506 which concentration is 1%, and which using condition is pH 9.0~10.0, passivation process can be completed in a short time using one step method; After the treatment using WTG-901 as corrosion and scale inhibitor, the corrosion rate of carbon steel can be reduced to less than 0.0127mm/a, the adhesion rate is 1.12 MCM, the corrosion rate of carbon steel in the steam and condensate water system is controlled in less than 0.031mm/a.