Many corrosion inhibitors are avaiable in market. The selection depends on where exactly it will be used. Mostly these are amines.
You may access this link to get some basic info
We use a combination of ammonia nutralizing amine (BitzDearborn) and Some nalco products. Every case is much independent of the other but the price varies with each treatment used.
We are using corrosion inhibitor in OVHD of our crude column.
Do anybody recomend its dosage and is it vary with plant load or remains constant irespective of load. We have controversal statements in this regard.