摘要
中国石油化工股份有限公司塔河分公司1号延迟焦化装置焦炭塔大吹汽过程时间为2.5 h,1.0 MPa蒸汽耗量平均为8 t/h,另外由于焦化大吹汽只是在换塔时间断使用1.0 MPa蒸汽,用汽时的锅炉负荷峰值对全厂锅炉负荷冲击很大。通过技术改造在1号延迟焦化装置成功应用凝结水智能喷雾系统,最终按节省蒸汽60%用量进行调试,确定了焦化大吹汽最佳蒸汽凝结水配比,工艺参数均保持正常(其中塔底温度保持在100℃,塔顶压力保持在0.04 MPa),生产未发生异常震动现象,焦炭质量合格,挥发分在9.5%左右。改造后1号延迟焦化大吹汽过程1.0 MPa蒸汽耗量下降了60%,降低了装置能耗,减少了全厂蒸汽管网波动,回收了装置凝结水低温余热。
The required blowing time of coker drum of No. 1 delayed coking unit in SINOPEC Tahe Com- pany was 2.5 hours and 1.0 MPa steam requirement was 8 t/h. As the large blowing was performed in drum switch-over operation and steam should be supplied intermittently, the peak steam requirement in large blowing operation had a great impact on the capacity of plant reboiler. After revamping of the No. 1 delayed coking unit, the condensate water was successfully used in large blowing operation at an optimized steam to conden- sate water ratio, and 60% of steam was saved. All process parameters were normal, （the bottom temperature of coker drum was maintained at 100℃ and overhead pressure was kept at 0.04 MPa）, no abnormal operation was experienced, coke was within required specifications, and volatile matter was controlled at about 9.5%. After revamping, the 1.0 MPa steam for blowing is reduced by 60%, the energy consumption of the unit is saved, the fluctuation of steam supply pipe network is reduced and low-temperature heat is recovered from con- densate water of the unit.
出处
《炼油技术与工程》
CAS
2013年第4期48-50,共3页
Petroleum Refinery Engineering
关键词
焦化
大吹汽
智能喷雾系统
蒸汽
凝结水
large blowing, intelligent spray system, steam, condensate water
