炼油厂污水因为含有Cl-,NH3,CN-,S2-和酚类等强腐蚀介质,短时间内就能致使污水罐常规防腐蚀涂层起泡、剥落失效,最终导致罐体穿孔泄露.经现场多种涂料挂片试验筛选,采用WF40含硫污水介质专用防腐蚀涂料对腐蚀介质有很好的防护作用,从2004年使用至今,罐体运行正常,使用效果良好.
Wastewater at oil-refining plants contains strong corrosive media such as Cl-, NH3, CN-, S2- , and phe-nols, which lead to blistering and peeling-off of conventional an-ticorrosive coatings for wastewater tank and even cause leaking of the tank. Thus coupon-suspension field tests were carried out for various paintings and coatings so as to screen those suitable to the anticorrosive protection of the wastewater tank. It was found that WF40 special anticorrosion painting applicable to S- containing wastewater was able to effectively protect the wastewater tank. Since it was put into use in 2004, the wastewater tank has been running well, indicating that the painting is indeed effective for preventing the wastewater lank from corrosion by wastewater con-taining Cl-, NH3, CN- , S2- , and phenols.
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