Pressure generation in coking furnaces: A review

Gagarin, S. G.

doi:10.3103/s1068364x11060020

Cited by 3 publications

(1 citation statement)

References 25 publications

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“…On the one hand, the internal coking pressure favors good agglomeration of plasticized coal grains and, consequently, improves mechanical properties of the resulting coke [12][13][14][15][16]. On the other hand, this pressure is transferred through the semicoke and coke layers to the walls of the chamber which is the source of the so-called "wall pressure" [3,17].…”

Section: Introductionmentioning

confidence: 99%

Mechanism of Coking Pressure Generation in the Light of the Results of Laboratory Tests

2022

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The phenomenon of coking pressure is crucial for cokemaking both in respect of a safe coke oven battery operation and a proper quality of the produced coke. In spite of that, the mechanism of this phenomenon has not been clearly explained yet. The aim of the presented research was to clarify which of the phenomena most commonly mentioned in the literature on the subject, i.e., the reduced gas permeability of the plastic layer or the swelling of plasticized coal grains, is responsible for generating internal coking pressure. To that end, laboratory equipment was developed which enabled examining the pressure generated by the bed of plasticized coal grains under conditions of a varying possibility of its expansion. The results of the examinations suggest that the swelling phenomenon of plasticized coal grains is the direct cause of coking pressure, and the coking pressure strongly depends on the possibility of plastic layer expansion. The results confirm also the migration phenomenon of plasticized coal matter, especially towards the cool part of the charge as well as the possibility of compression of this part of coal charge. As a result of both these phenomena, it becomes possible for the plastic layer to expand, which results in a reduction of generated coking pressure.

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