scholarly journals TREATMENT TANK CORROSION STUDIES FOR THE ENHANCED CHEMICAL CLEANING PROCESS

2011 ◽  
Author(s):  
B. Wiersma
Keyword(s):  
Cleaning Process ◽  
Chemical Cleaning ◽  
Treatment Tank ◽  
Corrosion Studies

Applicability of Chemical Cleaning Process to Steam Generator Secondary Side, (I)

2004 ◽  
Vol 41 (1) ◽  
pp. 44-54 ◽  
Author(s):  
Kazutoshi FUJIWARA ◽  
Hirotaka KAWAMURA ◽  
Hiromi KANBE ◽  
Hideo HIRANO ◽  
Hideki TAKIGUCHI ◽  
...  
Keyword(s):  
Steam Generator ◽  
Cleaning Process ◽  
Chemical Cleaning ◽  
Secondary Side

A kinetic model for calculating total membrane fouling resistance in chemical cleaning process

2017 ◽  
Vol 128 ◽  
pp. 59-72 ◽  
Author(s):  
Lei Hou ◽  
Kui Gao ◽  
Ping Li ◽  
Ximing Zhang ◽  
Zhan Wang ◽  
...  
Keyword(s):  
Kinetic Model ◽  
Membrane Fouling ◽  
Cleaning Process ◽  
Fouling Resistance ◽  
Chemical Cleaning ◽  
Total Membrane

‘Just-Clean-Enough’: Optimization of Wet Chemical Cleaning Processes for Crystalline Silicon Solar Cells

2016 ◽  
Vol 255 ◽  
pp. 344-347 ◽  
Author(s):  
Michael Haslinger ◽  
M. Soha ◽  
S. Robert ◽  
M. Claes ◽  
Paul W. Mertens ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Crystalline Silicon ◽  
Silicon Solar Cells ◽  
Semiconductor Surface ◽  
Cleaning Process ◽  
Chemical Cleaning ◽  
Crystalline Silicon Solar Cells ◽  
Metal Impurities ◽  
Wet Chemical

Advanced concepts for photovoltaic silicon solar cells, especially high-efficiency n-type solar cells, requires appropriate wet cleaning treatment in order to remove metallic contamination prior to high temperature processes like diffusion and passivation [1]. The cost of the cleaning process should be as low as possible that requires an optimized usage of the chemicals by increasing process tank lifetimes and developing dedicated feed and bleed recipes. The just clean enough concept has been developed to fulfil the needs of PV industry to minimize the consumption of chemicals. When the dominant contamination metal is identified in quality and quantity, a dedicated wet chemical cleaning process can be applied to remove the metal concentration from the semiconductor surface under a specified limit with the minimum volume on cleaning solution. The paper describes how to optimize a dedicated wet cleaning process for prominent metal impurities like Fe, Cu, Cr, Ti, Co and Zn. For each metal an exchange volume is determined to develop a feed and bleed recipe. The accumulation of the metal impurities in the process tank is calculated and process tank lifetimes are predicted.

scholarly journals Investigation of Chemical Cleaning of Supercritical Superheater Oxide Scale

2018 ◽  
Vol 238 ◽  
pp. 02011
Author(s):  
Hongfeng Li ◽  
Qingtang Xue ◽  
Xinhui Nie ◽  
Yunfei Xu
Keyword(s):  
Oxide Film ◽  
Acid Corrosion ◽  
Thermal Power ◽  
Cleaning Process ◽  
Chemical Cleaning ◽  
Superheater Tube ◽  
Weight Loss Method ◽  
Loss Method ◽  
Cleaning Technology ◽  
Metal And Alloys

Recent years, as the development of thermal power plant, superheater oxide film caused by over temperature and tube explosion and the turbine blade erosion problem more and more serious. The research and development of chemical cleaning technology of superheater oxide film is one of the most effective ways to solve this problem. The chemical cleaning of superheater is rather difficult than that of boiler, for mainly the reason as below. First, the scale of superheater tube, differences in microstructure, scales dense and need to use higher cleaning medium concentration and longer cleaning time. Second, the materials of superheater complex, involves ferritic steel and austenitic stainless steel such as 12Cr1MoV, T22, T91, TP347 and SUS304. For controlling chemical cleaning process, the acid corrosion sample is employed to slow inhibitor on different metal and alloys. Also, the traditional weight-loss method to evaluate the corrosion rate of materials in chemical cleaning process is discussed to monitor the corrosion process.

A Chemical Cleaning Process for Nuclear Steam Generators

1981 ◽  
Vol 55 (2) ◽  
pp. 349-361 ◽  
Author(s):  
P. V. Balakrishnan ◽  
P. McSweeney ◽  
C. R. Frost ◽  
P. Walmsley
Keyword(s):  
Cleaning Process ◽  
Steam Generators ◽  
Chemical Cleaning

scholarly journals Chemical cleaning to evaluate the performance of silica-pectin membrane on acid mine drainage desalination

2021 ◽  
Vol 1195 (1) ◽  
pp. 012057
Author(s):  
F R Mustalifah ◽  
A Rahma ◽  
Mahmud ◽  
Sunardi ◽  
M Elma
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Water Flux ◽  
Drainage Water ◽  
Water Desalination ◽  
Feed Water ◽  
Cleaning Process ◽  
Chemical Cleaning ◽  
Salt Rejection ◽  
Acid Mine

Abstract Pervaporation process is an excellent and potential way applied for desalting acid mine drainage water. Nevertheless, the water flux was reduced gradually due to the issue of membrane fouling. To resolve this problem, cleaning process was chosen to maintain the water flux of silica-pectin membranes. This study aims to recover the water flux and salt rejection of the silica-pectin membranes via chemical cleaning process applied for acid mine drainage water desalination with various temperature of feed water (25-60 °C). Silica-pectin membrane was formulated by employing TEOS functioning as silica precursor and pectin as carbon template from banana peels. Chemical cleaning of the membrane carried out by employing TiO2 solution + UV light radiation for an hour. Performance of the silica-pectin membrane was evaluated via pervaporation process under dead-end system. The performance of silica-pectin banana peels membrane found flux recovery from 10.6 kg.m− 2.h−1 and flux recovery of 17.54 kg.m− 2.h−1. It shows that flux recovery higher than before backwashing process. Also, silica-pectin membrane results in all of the salt rejection <99 %. It is concluded that the chemical backwashing process is important to apply to recover the water flux of membrane, also, this process considers to save and reduce the operational costs.

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