نتایج جستجو برای: coke deposition

تعداد نتایج: 95307  

2008
Zhao Lei Ting Wang

Petroleum coke is processed into calcined coke in a rotary kiln, where the temperature profiles of flue gas and coke bed are highly nonuniform due to different flow and combustion mechanisms. Motivated by saving energy costs, the effect of refractory brick's thermal properties on potential energy savings is investigated. This study focuses on investigating potential energy savings by replacing ...

2009
S. Melendi C. Barriocanal R. Alvarez

Plastic wastes, lube oils and coal-tar are evaluated, individually and combined, as additives to coal blends for the production of blast-furnace coke. The effects of adding 2 wt% of potential additives or their mixtures (50:50 w/w) on the coking capacity of coal, the pressure generated during the coking process and the coke quality parameters were evaluated. Using a combination of polyolefin wa...

Journal: :Occupational and environmental medicine 1999
M T Wu C K Ho S L Huang Y F Yeh C L Liu I F Mao D C Christiani

OBJECTIVES It was reported previously that topside oven workers with heavy exposure to coke oven emissions had increased serum activities of hepatic aminotransferase in one coke oven plant. This study was conducted to investigate the modifying effect of CYP1A1 MspI polymorphism on liver function profiles in coke oven workers. METHODS 88 coke oven workers from a large steel company in Taiwan w...

2002
Barry D. Ryan John T. Price

This paper provides background to the coke strength after reaction (CSR) test and gives perspective regarding changes in the cokinp coal market. It provides it sumtnary of some of the predicted relationships hctween the ash chemistry of coal, and coke properties of British Columbia coals. A brief overview iIf the ash chemistry of British Columbia coking coals is presented. The data arc used to ...

2016
Rayssa Ferreira Zanatta Maria Ângela Lacerda Rangel Esper Marcia Carneiro Valera Renata Marques Melo Eduardo Bresciani

This study aimed to evaluate the effect of beers on the bovine enamel microhardness. Fifty rectangular (1 x 3 x 1 mm-height x width x thickness) enamel specimens were obtained from permanent bovine incisors, and divided into five groups (n = 10) according to the treatment employed: Saliva, Coke, Brahma, Heineken, and Budweiser. Microhardness (Knoop) were obtained before; after 5, 30 and 60 min ...

2017
Songtao Yang Mi Zhou Weidong Tang Tao Jiang Xiangxin Xue Weijun Zhang

High-chromium vanadium and titanium magnetite (HCVTM) sinter has poor properties. The coke ratio has an important effect on the behavior of HCVTM sintering as it affects the mineral phases in the high-chromium vanadium and titanium sinter (HCVTS) via changing the sintering temperature and atmosphere. In this work, the sintering behavior of HCVTM mixed with varying coke ratios was investigated t...

Journal: :Acta biochimica Polonica 2013
Shanmugam Sureshkumar Vellingiri Balachandar Subramaniam Mohana Devi Meyyazhagan Arun Alagamuthu Karthickkumar Balasubramanian Balamuralikrishnan Kathannan Sankar Shafi Ahammed Khan Mustaqahamed Shanwaz N Dharwadkar Keshavarao Sasikala Ssang-Goo Cho

Polycyclic aromatic hydrocarbons (PAHs) result from the incomplete combustion of natural or synthetic organic materials. The working environment at a coke plant can negatively affect the employed workers who were exposed to coke oven emissions containing PAHs, which formed and released into the environment by the process of pyrolysis of coke. This study aims to analyze the relationship between ...

Journal: :British journal of industrial medicine 1971
D D Walker R M Archibald M D Attfield

Walker, D. D., Archibald, R. M., and Attfield, M. D. (1971). Brit. J. industr. Med., 28, 358-363. Bronchitis in men employed in the coke industry. An epidemiological survey to determine the prevalence of bronchitis in men employed at two of the National Coal Board's coking plants is described. Eight hundred and eighty-one men (91 %) of the total working population were examined. A strong associ...

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