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The possible role of fissure formation in the prevention of coking pressure generation

机译：裂缝形成在防止焦化压力产生中的可能作用

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Fissure patterns have been studied for both high-volatile, low-coking pressure coals and low-volatile, high-coking pressure coals. The high-volatile coals form an extensive pattern of interconnected fissures, which seem to form early on and extend further toward the plastic region than the low-volatile coals, which form only a few fissures that do not extend very far into the charge. It is proposed that the combination of high-fluidity and extensive fissure network present for high-volatile coals may assist in allowing continual release of volatiles throughout the coking process and play a part in preventing the generation of high gas pressures. It was also found that a higher proportion of the volatiles for the low-volatile, high-coking pressure coals is released after the coal has been converted to semi-coke, which may play a role in preventing the effective release of gas.
机译：对于高挥发分，低焦化压力煤和低挥发分，高焦化压力煤，都研究了裂缝模式。高挥发分煤形成了广泛的相互连接的裂缝模式，这些裂缝比低挥发分的煤早形成并向塑料区域延伸，而低挥发分的煤只形成了几个裂缝，并没有延伸到装药中。建议将高流动性煤存在的高流动性和广泛的裂隙网络结合起来，可以帮助在整个焦化过程中持续释放挥发物，并在防止高气压产生中发挥作用。还发现低挥发性，高焦化压力煤中较高比例的挥发物是在煤转化为半焦后释放的，这可能在防止气体有效释放方面起到了作用。

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