CAJ | 학술논문

由于塑料厂LDPE（高压低密度聚乙烯）装置反应管换热水水质指标设计上不严格，没有按照锅炉水管理，没有微量氧、铁离子和硬度等指标要求，且设计上只有联氨药剂除氧措施，缺少必要的水质控制和处理措施。多年来，装置水质一直不合格，微量氧、硬度、pH值、铁离子等指标超标，出现了水系统结垢、腐蚀和混浊等现象，发生了设备锈蚀、管路腐蚀以及换热器结垢等问题。为了消除由于腐蚀、结垢而造成的水泵机封损坏、超高压反应管缝隙腐蚀等问题，有针对性地进行了防止腐蚀改善水质的除氧剂、pH值调整剂、硬度消除和垢分散剂加入等改造，取得了良好的效果。
유우소료엄LDPE（고압저밀도취을희）장치반응관환열수수질지표설계상불엄격，몰유안조과로수관리，몰유미량양、철리자화경도등지표요구，차설계상지유련안약제제양조시，결소필요적수질공제화처리조시。다년래，장치수질일직불합격，미량양、경도、pH치、철리자등지표초표，출현료수계통결구、부식화혼탁등현상，발생료설비수식、관로부식이급환열기결구등문제。위료소제유우부식、결구이조성적수빙궤봉손배、초고압반응관봉극부식등문제，유침대성지진행료방지부식개선수질적제양제、pH치조정제、경도소제화구분산제가입등개조，취득료량호적효과。
As there was no strict control on the water quality for the super HP reactor heat exchange tubes in design, the water specifications were not controlled as those for the boiler feed water, there were no requirements on trace oxygen, Fe ions and hardness and there are no water quality control and water treatment measures, the water quality has been off specifications for many years in trace oxygen, hardness, pH value and Fe ions, etc. As the result, serious fouling, corrosion and turbidness have occurred in the water system, and equipment and piping and heat exchanger are subject to corrosion and fouling. To prevent the failure of mechanical seal of water pumps due to corrosion and fouling and crevice corrosion of super HP reactor heat exchange tubes, the plant has been revamped for addition of de - aeration agent, pH adjustment additive, hardness reduction agent and dispersant, etc, and good results have been achieved.