Evaluation method of swelling pressure under the softening state of coal.
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In the evaluation of the swelling pressure upon the coke oven wall during carbonization, it is necessary to make precise estimation of generated swelling pressure under the softening state of coal.<BR>Swelling pressure of softened coals was measured by a modified Audibert-Arnu dilatometer under different packing densities and heating rates for five kinds of coals with different coalification ranks. By the use of experimentally determined two parameters (M and V), the swelling pressure (P, kg/cm<SUP>2</SUP>) can be expressed as follows:<BR>P=94.4 (M-0.3) <SUP>1.23</SUP>· (V-1) <SUP>1.26</SUP><BR>Swelling pressures of coals in different coal pretreatment processes were calculated by the equation. For a coal pretreatment process accompanied with high bulk density, a reduction of caking property of the charged coal is necessary due to the high swelling pressure generated.
- 一般社団法人 日本エネルギー学会の論文
一般社団法人 日本エネルギー学会 | 論文
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