The Practical Application and Innovation of Cleaning Technology for Condensers

Abstract

Maintaining clean condenser tubes is of vital importance for reliable, efficient power generation. Two major problems result from substances on the interior of tube surfaces: (1) Loss of heat transfer, and (2) Under-deposit corrosion. Internal tube fouling is nearly always detrimental to heat transfer, thus reducing the efficiency of steam condensing, resulting in a lower vacuum (higher pressure) and less efficient steam turbine operation. Under-deposit corrosion of tube material can result in through-wall leaks, permitting ingress of cooling water into high purity steam condensate. Because poor vacuum conditions in the condenser can reduce electric generating capacity, and contaminants in steam condensate can cause significant damage to boiler tubing and steam turbine materials, measures to prevent fouling or remove foulants must be applied. Early identification of fouling characteristics and a fundamental knowledge of cleaning system capabilities are essential in determining the most effective cleaning technology. Unique circumstances may require innovative solutions. The common causes of condenser tube fouling and the practical application and innovation of cleaning technology are discussed. State-of-the-Art methods for off-line mechanical tube cleaning are presented, and their effects on tube condition examined.

Integrated membrane and microbial fuel cell technologies for enabling energy-efficient effluent Re-use in power plants

“…The metal components exposed to the reclaimed water, especially in the warm and aerobic conditions found in CWRSs, are susceptible to biofouling (Frayne, 1999) and microbial corrosion (Howell and Saxon, 2005).…”

Efficiency of surface modified Ti coated with copper nanoparticles to control marine bacterial adhesion under laboratory simulated conditions

“…Therefore a common solution for biofouling problem is not reasonable relating to the complexity of the nature of the aquatic life, which colonizes a submerged surface. The combination of mechanical and chemical treatments like sponge ball cleaning, back washing and chlorination is commonly used as the fouling control strategies in cooling water systems [3]. However, the practical experience has shown that no routine treatment regime can successfully keep the condenser system clean over a period of years [4].…”