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 Wysłany: Czw 18:22, 30 Gru 2010 Temat postu: air jordans Analysis of carbon burning kiln _2235 |
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Analysis of carbon burning kiln
0%, the coke produced from 641kg / h increased to 700kg / h, respectively, this figure is equivalent to the amount of coke added 3.2% and 3.5%. This means that for every 1% increase in volatile, coke increased by 0.13%. Burning the sum of the two so that each increase of 1% of the volatiles, coke burning to increase 0.28%, it is clear in the volatile petroleum coke increased by 1%, the coke mass loss of 1.28% after calcining. (3) the speed of change on the rotary kiln calcined coke burning also have an impact, rotary speed down, adjust the combustion air to the kiln temperature increased slightly. Reduce the speed of the kiln, so the coke kilns along the axial movement speed down, and although the residence time of coke in the kiln increases. But with the speed of the decline, the kiln dust content is reduced accordingly focus: 2004 4 45 * light metal charcoal burning is reduced. However, the speed of the kiln is not too low, it is necessary to focus the kiln bed does not produce lateral movement is appropriate. (4) coke feeding quantity of the rotary kiln burning coke has some impact, with the reduction in the amount of coke added, need to maintain the kiln temperature of the air volume of the same proportion as the reduction in general. In addition, low feeding quantity would lead to high heating rate, coke, heating rate, which has made the retention of coke in the kiln in less time, thus reducing coke burning. It has not changed much change in speed of change in a large kiln. Reduce the feeding quantity, while lowering burning,[link widoczny dla zalogowanych], but lower yield, so we do not take such measures. (5) the greater the amount of petroleum coke powder, coke in the kiln dust generated by moving the higher the concentration of dust is pumped the more ventilation, dust finally be in the kiln and combustion chamber. At the same time the greater the amount of petroleum coke powder, petroleum coke, the larger the surface area in contact with air, the tendency of petroleum coke is oxidized to increase. Therefore, the larger the amount of powder with petroleum coke,[link widoczny dla zalogowanych], calcined petroleum coke burning also increases. 6 Conclusion Through the calculation, into the kiln when the moisture content of 5.86% delayed petroleum coke, volatile matter content of 7.79% (wet basis) when, cP2.2m �� 45m rotary kiln burning of 8.5% carbon, carbon mass burning large. By analyzing the reduction in the production of carbon burning rotary kiln may take the following measures: (1) petroleum coke raw coke powder containing more broken in the beginning when raw materials, petroleum coke after the first screening round vibrating screen, larger than 50mm the material for crushing, cutting without crushing screening can effectively reduce the over-grinding of raw materials, petroleum coke in the reduction of fine dust content, reducing coke calcining process in the kiln burning carbon. (2) higher water content of petroleum coke feedstock, raw materials into the plants, the raw materials warehouse storage period be extended,[link widoczny dla zalogowanych], by standing dehydration and natural drying, remove the part of the water. Reduce the water content of petroleum coke; conditional petroleum coke drying section factory is located on the petroleum coke into the plant to dry. To ensure that the water content of petroleum coke rate of 3% or less, can reduce the petroleum coke in rotary kiln process,[link widoczny dla zalogowanych], due to high water on the burning of carbon. (3) the volatile petroleum coke higher raw material, raw material into the plant, the coke plant in batches of materials to be stored, testing each batch of the volatile content of petroleum coke, petroleum coke plant according to the different volatile content, the raw materials the coarse, less volatile calcined coke before the content, helps to reduce the petroleum coke in rotary kiln in the process of carbon burning. (4) adjust the rotary speed to a minimum acceptable value and, at this speed, coke on the line does not slide relative lining. Every increase or decrease the speed of the kiln,[link widoczny dla zalogowanych], in order to maintain a constant temperature kilns, to reduce or increase the amount of combustion air. References: [1] JeanPerro ~ T. H. Nguyen et al (Canada) Marshall made the first translation of application of mathematical simulation of coke calcining kiln operation optimization ��M] a carbon supplement light metal album (4) 19915:43 ~ 47 [2jBr. BPImHEB, etc. (USSR) Haiyan translation. Gas medium on the quality of calcined petroleum coke [M]. Light metal album for a supplement of a carbon (3) 19915:11 ~ l3 [3] D. GBrooks (United States). Marshall first translation. Mathematical modeling of coke calcining kiln [M] a carbon supplement light metal album of one (1) 1991.3 21-26 {. [4] Li Shenghua. Graphite electrode [M]. Metallurgical Industry Press 1997118 ~ l2. {Editor Panyu Min) * Errata journal in 2004 published 1 <aluminum plant programs to strengthen family of current strength RESEARCH \Department of errors in the work actions, especially apologize to the authors and readers. A copy of the Corrections of the following (the editorial department��
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