HSAS NEUTRALIZATION

It is important to know that in most of the cases the HSAS NEUTRALIZATION is only a delaying action before other HSAS removal actions can be taken.
These are:
Purging or Bleed and Feed
Electrodialysis Reclamation
Ion Exchange Reclamation
Vacuum Distillation Reclamation

The amine unit operator should always attempt to find out and isolate the cause of the HSAS as mentioned before. The goal will be to eliminate, if possible, or reduce the acidic precursor incursion. If this is not possible and neutralization is considered as a delaying action there are certain guidelines to be followed:

1. Select the neutralizing agent, APL offers the NEUTRASOL
2. Avoid over neutralizing the solution, target a 80 to 90 % neutralization by determining the dosage rate.
3. The addition of the neutralizing agent should be done using a metering pump. If possible use this over batch addition which may create local over neutralization if there is no good mixing which may cause precipitation.
4. In case a batch procedure is used it is recommended that this is split into several batches and be checked by solvent analysis after each batch.

Use the APL HSAS-C™ to find out the level of the HSAS and the quantity of the neutralizer needed to neutralize.