The Purification of Boiler-feed Water.

Ethylene yield is significant in showing the performance of the steam cracker furnace in the olefin plant. This study was conducted in the actual large-scale olefin plant to see the impact of various variables towards the ethylene yield. The analysis was conducted utilizing Regression Analysis in Minitab Software Version 18 to develop a reliable ethylene yield model. The model concluded that ethylene yield in the studied plant was contributed by the factor of -0.000901, 0.02649, -0.282, 0.16, -0.0834, 0.1268, and 0.0057 of Hearth Burner Flow, Integral Burner Flow, Steam Drum Pressure, Super High-Pressure Steam (SHP) Boiler Feed Water Flow, SHP Flow, Naphtha Feed Flow, and Stack NOx Emission respectively. The Response Optimizer tool also showed that the ethylene yield from naphtha liquid feed utilizing pyrolysis cracking can be maximized at 32.55% with control setting at 9,476.41 kg/hr of Hearth Burner Flow, 608.56 kg/hr of Integral Burner Flow, 112.93 Barg of Steam Drum Pressure, 109.11 t/hr of SHP Boiler Feed Water Flow, 86.42 t/hr of SHP Flow, 63.49 t/hr of Naphtha Feed Flow and 126.23 mg/m3 of Stack NOx Emission.

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The principles of boiler feed water treatment

Journal of the Society of Chemical Industry ◽

10.1002/jctb.5000424604 ◽

1923 ◽

Vol 42 (46) ◽

pp. 1100-1100

Keyword(s):

Water Treatment ◽

Feed Water ◽

Boiler Feed Water

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Flow Induced Localized Corrosion of Carbon Steel Tube in Boiler Feed Water

Zairyo-to-Kankyo ◽

10.3323/jcorr1991.42.331 ◽

1993 ◽

Vol 42 (5) ◽

pp. 331-333

Author(s):

Masanobu Matsumura

Keyword(s):

Carbon Steel ◽

Steel Tube ◽

Localized Corrosion ◽

Feed Water ◽

Boiler Feed Water

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Treatment Method Assessment of the Impact on the Corrosivity and Aggressiveness for the Boiler Feed Water

Water ◽

10.3390/w11101965 ◽

2019 ◽

Vol 11 (10) ◽

pp. 1965 ◽

Cited By ~ 1

Author(s):

Skoczko ◽

Szatyłowicz

Keyword(s):

Water Quality ◽

Water Treatment ◽

Saturation Index ◽

Treatment Plant ◽

High Water ◽

Feed Water ◽

Exchange Cation ◽

Boiler Water ◽

The Impact ◽

Boiler Feed Water

The aim of the study was the assessment of corrosivity and aggressiveness for boiler feed water. The negative effects of water corrosivity and aggressiveness may include silting up of the steel water supply system and the destruction of boiler equipment touched or washed by such water. They may cause the whole industrial production system to fail or be destroyed. That is why it was important to reach a high water purification level, including the calculation of water aggressiveness and corrosivity indicators. The carried out test showed that the simple system used before the modernization of the industrial water treatment plant is not sufficient to reach clean and stable water. The authors proposed modernization, including additional processes to improve boiler water quality, and designed new devices for water treatment. As a result of the new idea, groundwater taken as raw water was treated in individual and complex processes, such as pre-aeration, filtration, ion exchange (cation and anion exchange resigns), extra aeration, and extra degassing. The conducted research included chemical analyses of raw and treated water. In the conducted studies, the indirect method of water aggressiveness and corrosivity assessment was applied using mathematical calculation of the Langelier Saturation Index (LSI), the Ryznar Stability Index (RI), the Larson–Skold Index (LI), and the Singley Index (SI). The results proved that the new proposed processes for the boiler feed water treatment station allow reaching a high water quality and low level of water aggressiveness and corrosion.

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