(48j) Novel Solutions t Fouling and Corrosion in Dilution Steam Generation

Dilution Steam Generators in ethylene plants have historically had problems with both fouling and corrosion.  Gas Crackers, especially, often have separation issues with Tar in the quench water system. Emulsified hydrocarbons, mixed with coke and other organic acids, cause corrosion and fouling in this system.  These emulsions reduce the capacity and efficiency of the steam generators which, in turn, drives up costs for water treatment and utilities. Using caustic to neutralize pH in the dilution steam system carries the risk of sodium carry-over into the furnaces resulting in damage to alloy tubes. 

A unique and novel approach of using an effective corrosion inhibitor in combination with other products to keep the water quality clean has resulted in good corrosion and fouling control. This paper will discuss this approach and the benefits that it provides to olefins producers due to improved, reliable corrosion/fouling control. 

The problems encountered most frequently in the dilution steam system can be very reliably resolved with this unique approach.  A typical case study will be shared to discuss these findings.