The second demand is for metallurgical, or coking, coal.
第二种是对于冶金煤或者说焦化煤的需求。
Adding coking inhibitor to the dilute steam or cracked raw materials is one of the effective methods to lengthen unit-operating cycle at present.
在裂解原料或稀释蒸汽中添加结焦抑制剂是目前延长装置运转周期较为有效的方法之一。
By controlling combustion temperature or adding kaolin clay to make alkali metal salts into high melting substances, coking can be avoided in dense phase zone.
通过控制密相区燃烧温度或添加高岭土使之与碱金属钠盐形成高熔点物质，可避免密相区结焦。
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