十八小时生焦周期单程延迟焦化装置的运行

RUNNING OF SINGLE DELAYED COKING UNIT WITH 18 HOURS COKING PERIOD

为了扩大生产能力，将设计能力为０．６ Ｍｔ／ａ的双炉四塔循环延迟焦化装置 改造为单程延迟焦化装置并将其中一炉两塔系统（炉３０１系统）由生焦周期为２４ ｈ改为１８ ｈ，而 炉３０２系统的生焦周期仍为２４ ｈ。该装置的运行情况和标定结果表明，炉３０２系统单程焦化的 处理能力可增加０．０８ Ｍｔ／ａ，炉３０１系统处理能力可增加０．１ Ｍｔ／ａ，焦炭塔内油气线速小于极 限值（０．１０ ｍ／ｓ），加热炉的热负荷仍有较大余地，每天可增加效益１３．２×１０４ ＲＭＢ￥。

In order to expand production ability,a double heater four tower delayed coking unit with a design capacity of 600000 t/yr was converted into single process ones,and the coking period of the one heater two tower s ystem(301 system) altered from 24 to 18 hours,but the 302 system's remained 24 h ours.The results showed that the processing capacity of the single process cokin g of the 302 system has an increase of 80000 t/yr,while that of the 301 system h as 100000 t/yr increase.The linear velocity of oil gas in coke tower is less tha n the limit(0.10 m/s) and the heat duty of the heater has greater space.The dail y economic benefits is 13.2 10 RMB￥.