Paper Information

Title: 

CORROSION AND DEPOSIT IN ZARAND POWER PLANT AND METHODS FOR THEIR DECREASE

Type: PAPER
Author(s): KHOSRAVAN AZITA,BAKHTIARI FERESHTEH
 
 
 
Name of Seminar: INTERNATIONAL POWER SYSTEM CONFRENCE
Type of Seminar:  CONFERENCE
Sponsor:  SHERKATE TAVANIR
Date:  2004Volume 19
 
 
Abstract: 

THE MOST IMPORTANT PROBLEMS IN ZARAND POWER PLANT ARE CORROSION AND DEPOSITS IN THE PIPELINES OF THE COOLING TOWER. THEY ARE RESPONSIBLE FOR MAKING HOLES IN THE CONDENSER PIPES AND ELSEWHERE. THE OTHER PROBLEM OF ZARAND POWER PLANT IS REFINING WATER CORROSION. MICROBIOLOGICAL EXPERIMENTS COMPLETE CHEMICAL ANALYSIS OF WATER, CORROSION COUPON, CALCULATION OF LONGELIER, RYZNAR AND PUKORIOUS INDEX AND THE COMPARISON OF THE RESULTS WITH STANDARD WATER PROPERTIES INDICATE THAT CALCIUM, MAGNESIUM, HIGH TOTAL HARDNESS AND TDS ARE RESPONSIBLE FOR DEPOSITS IN THE PIPELINES OF THE WATER COOLING TOWER. THIS WATER IS CORROSIVE BECAUSE THE CONCENTRATION OF CHLORIDE AND SULFATE IS HIGH AND ALSO BECAUSE THERE ARE SOME MUD AND SUSPENDING MATERIALS IN IT. IN REFINING WATER, SULFATE AND CHLORIDE CAUSES CORROSION. INVESTIGATIONS INDICATE THAT THE BEST WORK FOR DECREASING THE COOLING TOWER WATER CORROSION AND DEPOSITS WOULD BE, PRIMARILY, CHEMICAL CORRECTION OF WATER .THIS WILL NOT ONLY DECREASE THE CORROSION AND DEPOSIT BUT ALSO WILL HELP THE DRAIN DECREASE OF THE COOLING TOWER WATER IN THE POWER PLANT .THIS RESEARCH ALSO INVESTIGATED THE EFFECT OF CHEMICAL INHIBITORS ON THE COOLING TOWER WATER CORROSION AND DEPOSITS. RESULTS INDICATED THAT UNDER THIS CONDITION, INHIBITORS ARE NOT EFFECTIVE. IF PROPER CONDITIONS ARE PROVIDED FOR THIS WATER, CORROSION AND DEPOSIT LEVELS WILL BE CONTROLLED BY INCREASING PROPER INHIBITORS. THE REFINING WATER OF THIS PLANT IS CORROSIVE BECAUSE IN THIS WATER THE CONCENTRATION OF SULFATE AND CHLORIDE IS HIGH AND IN ORDER TO DECREASE SUCH CORROSIONS, WE MUST INITIALLY DECREASE SULFATE AND CHLORIDE CONCENTRATION.

 
Keyword(s): POSIT CONTROL ,WATER CONDITIONING, COOLING TOWER
 
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