Paper Information

Title: 

STUDY ON BASIC METHODS OF SPENT CAUSTIC TREATMENT

Type: PAPER
Author(s): SAMADIAFSHAR ALI*
 
 *PROCESS DEPARTMENT, PHASES 9 AND 10, SOUTH PARS GAS COMPLEX, ASSALUYEH, IRAN
 
Name of Seminar: INTERNATIONAL CONFERENCE OIL, GAS, PETROCHEMICAL AND POWER PLANT
Type of Seminar:  CONFERENCE
Sponsor:  SHERKATE TAVONI AMOZESHI PAZHOHESHI VESTA
Date:  2012Volume 1
 
 
Abstract: 

RECENTLY, REFINERY AND PETROCHEMICAL PRODUCER IS FORCED BY MORE STRINGENT ENVIRONMENTAL REGULATIONS TO BETTER MONITOR AND CONTROL THEIR WASTEWATER. ONE OF THE KEY CONTRIBUTORS TO RELATIVELY HIGH CHEMICAL OXYGEN DEMAND (COD) AND BIOLOGICAL OXYGEN DEMAND (BOD) IS FROM THE ACID GAS (BOTH CO2 AND H2S) AND MERCAPTAN REMOVAL SYSTEM (S) TYPICALLY USING DILUTE CAUSTIC SODA (NAOH) AS THE ACTIVE REAGENT. THE RESULTANT WASTE STREAM IS OTHERWISE KNOWN AS SPENT CAUSTIC. IT’S DIFFICULT TO TREAT AND DISPOSE OF DUE TO ITS NOXIOUS PROPERTIES. TODAY’S VARIOUS METHODS ARE USED FOR TREATING SPENT CAUSTIC, SUCH AS WET AIR OXIDATION AND DIRECT ACID NEUTRALIZATION. IN THIS REVIEW, THESE METHODS WERE STUDIED IN DETAIL AND WERE COMPARED TOGETHER.

 
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