Coke and Chemistry

Popov, V.; Posokhov, Yu.; Butakova, V.; Kuznetsova, N.; Kuvarin, A.; Rachev, I.

doi: 10.3103/S1068364X10080016pmid: N/A

Several means of spectral correction and sampling are compared in terms of their information content when calibrating coal’s ash content and yield of volatiles.

Admakin, L.

doi: 10.3103/S1068364X10080028pmid: N/A

The thermodynamic characteristics of an organic system are determined. The state factors of the organic system are identified: the partial oxygen pressure, oxygen activity, temperature, and pressure. Functional relations are found between the redox state of the system and the quantitative ratio of fusinite and vitrinite (F/Vt), on the one hand, and the basicity of the medium, on the other; the basicity is expressed in terms of the activity of primary anions in natural water. The relation between the plant elements and the coal microcomponents and oxygen is considered. The influence of the water-mineral supply on the redox state of the organic system is discussed.

Zolotarev, I.; Toryanik, E.; Zhuravskii, A.

doi: 10.3103/S1068364X1008003Xpmid: N/A

Theoretical and practical aspects of wet slaking that combines pulsed and dual (two-loop) cooling of the coke are outlined. The introduction of the new technology at ZAO Makeevkoks reduces the overall moisture content of blast-furnace coke and improves its uniformity, while reducing atmospheric emissions and slowing the corrosion of the slaking car.

Malyi, E.; Koverya, A.; Starovoit, M.

doi: 10.3103/S1068364X10080041pmid: N/A

The interaction of low-metamorphic coal components in coking batch during pyrolysis is studied. The characteristics of the resulting coke are presented, and the partial hydrogenation is discussed.

Strakhov, V.

doi: 10.3103/S1068364X10080053pmid: N/A

Papers at a Russian conference on problems with the sources, quality, and effective use of carbon materials (including coal, schungite, and petroleum coke) in ore and chemical electrofurnaces are briefly summarized.

Isaev, M.; Sultanguzin, I.

doi: 10.3103/S1068364X10080065pmid: N/A

A three-dimensional model of the heating wall in a coke battery is developed by means of the Fluent CFD program. The results of simulation are in satisfactory agreement with experimental data. The mathematical model permits the maintenance of more uniform heating over the height, width, and length of the coke bed by regulating the combustion conditions. The model may also be used in modifying the heating-wall design in the coke furnace, boosting coke strength, reducing energy and fuel consumption, and reducing emissions.

Andreikov, E.; Krasnikova, O.; Amosova, I.

doi: 10.3103/S1068364X10080077pmid: N/A

The properties of petro/coal tar pitch and distillate fractions obtained in the joint distillation of coal tar and heavy pyrolytic oil from ethylene production are described. The petro/coal tar pitch is particularly reactive in heat treatment and air-blowing. The petro/coal tar pitch may be used as less carcinogenic binder and impregnating electrode pitch.