Determination of the Conditions for Carbon Materials Oxidation with Carbon Monoxide Formation at High Temperatures

In this paper, the influence of carbon material type, temperature and oxygen concentration in gas mixture on the processes of carbon monoxide formation in production of the electrodes by graphitization was explored experimentally. Specific quantity of gas formed for a definite time, reduced to mass unit of carbon loading using pitch, packing materials and charge mixture of industrial use, was calculated. It is demonstrated that pitch provides the highest rate of carbon oxidation with the release of CO and substantially exceeds packing materials and charge mixture for this index.

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A new method for determination of microsomal haem oxygenase (EC 1.14.99.3) based on quantitation of carbon monoxide formation

Scandinavian Journal of Clinical and Laboratory Investigation ◽

10.3109/00365517809108405 ◽

1978 ◽

Vol 38 (1) ◽

pp. 69-76 ◽

Cited By ~ 9

Author(s):

E. Cavallin-Ståhl ◽

G. -I. Jönsson ◽

B. Lundh

Keyword(s):

Carbon Monoxide ◽

New Method ◽

Carbon Monoxide Formation ◽

Haem Oxygenase

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DEVELOPMENT OF ENERGY-EFFICIENT AND ENVIRONMENTALLY FRIENDLY LININGS AND THERMAL INSULATION OF ELECTRODE PRODUCTION FURNACES

Energy Technologies & Resource Saving ◽

10.33070/etars.3.2020.02 ◽

2020 ◽

pp. 21-34

Author(s):

S.V. Leleka ◽

Ye.M. Panov ◽

A.Ya. Karvatskii ◽

G.M. Vasylchemko ◽

I.O. Mikulionok ◽

...

Keyword(s):

Carbon Monoxide ◽

Thermal Insulation ◽

Energy Efficient ◽

Carbon Materials ◽

Experimental Studies ◽

Temperature Fields ◽

Ecological State ◽

Resource Saving ◽

Oxidized Carbon ◽

Carbon Monoxide Formation

A numerical analysis of the thermoelectric state of the Acheson furnace was performed and the use of new thermal insulation of blanks that are graphitized was proposed. The expediency of using a single-component heat-insulating charge as thermal insulation is shown. In this case, in comparison with the use of a traditional multicomponent synthetic mixture, not only a decrease in the temperature of the blanks is observed, but also a significant equalization of temperature along the axis of the blanks. Based on the results of measuring the thermophysical properties and numerical simulation of temperature fields in the volume of the Acheson graphitizing furnace, a resource-saving and environmentally efficient carbon heat-insulating mixture was selected, which consists of raw and graphite coke grains 50/50 % (wt.) up to 2 mm in size. Theoretical and experimental studies of the ecological state of kilns and graphitizing furnaces have been carried out. Based on the analysis of the obtained experimental data, the temperature and time dependences of the concentration of carbon monoxide in kilns and graphitizing furnaces are established. The main sources of carbon monoxide formation are determined: under-oxidized carbon materials, aromatic and resinous substances of binder preforms. A set of measures has been developed that can reduce the concentration of carbon monoxide emissions from furnace equipment in industrial conditions. Experimental studies were carried out to determine the temperature dependence of the concentration of carbon monoxide during heating of a multicomponent and one-component heat-insulating charge, which made it possible to establish a reduction in CO emissions by more than 20 % in the case of using the proposed one-component charge. Bibl. 17, Fig. 9, Tab. 3.

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