关键词: 连续重整, 掺炼, 焦化石脑油, PONA, 保护剂, 过滤器堵塞, 效益核算

Abstract:

At present, there is a general shortage of reforming feedstock in the refining industry, so it is of great strategic significance to expand the source of reforming feedstock. Based on this, taking the blending of coking naphtha in the 0. 8 MM TPY continuous catalytic reforming(CCR) unit of SINOPEC Jinling Company as an example. According to the nature of coking naphtha and the blending of coking naphtha in domestic refining enterprises, the blending ratio of coking naphtha, the use of pre-hydrogenation protective agent, the blocking of pre-hydrogenation filter, and the salt deposition in the pre-hydrogenation system are investigated.The investigation results show that the final distillation point of blended coking naphtha after hydrotreating should be strictly controlled to be no more than 165 ℃； The blending ratio of aromatics scheme is 5% ～ 15%,and that of gasoline scheme is up to 70%; It is necessary to constantly monitor the properties of feedstock,pressure drop changes of pre-hydrogenation unit, filter plugging and salt deposition. The economic benefit accounting results show that the annual profit of blending 15% coking naphtha is as high as 37. 5788 million yuan, and the economic benefit is very considerable.

Key words: CCR, blending, coking naphtha, PONA, protective agent, blocking of pre-hydrogenation filter, economic benefit accounting;