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A coke oven monitoring system capable of quantitatively monitoring changes in the state of the furnace walls in a coke oven with good accuracy has: an oven width measurement device ( A coke oven monitoring system capable of quantitatively monitoring changes in the state of the furnace walls in a coke oven with good accuracy has: an oven width measurement device (

Kobe Steel and Kansai Coke And Chemicals Co. | Date: 2010-08-26

The present invention provides a biological treatment method of biologically treating the subject water containing phenol, thiocyanate and the like, which improves the quality of treated water, while suppressing a reduction in treatment efficiency. As a means for achieving the aforementioned object, the present invention relates to a biological treatment method including introducing subject water containing a COD component, wherein the COD component is at least one of phenol and thiocyanate, into a biological treatment tank containing sludge containing bacteria capable of decomposing the COD component to thereby biologically treat the COD component with the bacteria, wherein, before the introduction of the subject water into the biological treatment tank, a step of counting the total number of bacteria contained in the sludge is carried out, so that the amount of the COD component loaded on a single bacterium per unit time can be controlled within a predetermined range.

Kansai Coke And Chemicals Co. and MC Evolve Technologies Corporation | Date: 2013-07-25

The present invention provides activated carbon having excellent properties. The present invention consists of activated carbon, the key feature of which is an active surface area of at least 80 m

Ueki Y.,EcoTopia Science Institute | Nunome Y.,EcoTopia Science Institute | Yoshiie R.,Nagoya University | Naruse I.,EcoTopia Science Institute | And 2 more authors.
ISIJ International | Year: 2014

The price of caking coal, which is used in the production of metallurgical coke, has risen in recent years. Also of concern is the amount of CO2 emitted from steel industries, comprising approximately 15% of total CO2 emissions in Japan. Therefore, CO2 emissions from the ironmaking process should be reduced to avoid global warming. In this work, fundamental research is conducted on the effect of adding woody biomass to the properties of coke, with the aim of possibly using woody biomass, which is carbon neutral, as a raw material in coke-making. Experimental results showed that the connectivity between coal particles in the coke sample during carbonization and coke strength drastically decrease by adding woody biomass to caking coal. However, the coke properties of the coke sample with added woody biomass could be improved by removing the partly volatile matter of woody biomass before mixing with caking coal, and as a result, the possibility of using woody biomass as a raw material for coke-making with prior carbonization at temperatures of more than 500°C was found. © 2014 ISIJ.

Ashida R.,Kyoto University | Nagaya S.,Kyoto University | Miura K.,Kyoto University | Kubota Y.,Nippon Steel & Sumitomo Metal Corporation | And 2 more authors.
ISIJ International | Year: 2014

The authors have proposed a high temperature solvent fractionation method that can separate coals into several fractions having different molecular weight without destroying coal structure. In this study the method was applied to characterization of low-grade coals and binder during their co-pyrolysis to clarify chemical interaction between them. When a sub-bituminous coal or a slightly-caking coal was copyrolyzed with asphalt pitch (ASP), it was found that smaller-molecular weight compounds less than 800 in molecular weight which were abundant in ASP could be added by appearance as can be expected from the calculation assuming no interaction between the coals and ASP. The added smaller-molecular weight compounds contributed to the reduction of viscosity of the pyrolyzing coal. The possibility was also suggested that part of smaller-molecular weight compounds in ASP were converted to heavier compounds whereas some smaller-molecular weight compounds were formed from coals to compensate the loss of such compounds derived from ASP. It was also shown that oxygen existent in the heaviest fraction of the low-grade coals was removed to form H2O and CO2 by chemical interaction with ASP. This interaction was found to contribute to the reduction of shrinkage of low-grade coals during carbonization. © 2014 ISIJ.

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