The capacity expansion revamping process and running status were introduced of propylene rectification tower, which was one of the ethylene units revamping project of capacity expansion from 160 kt/a to 240 kt/a in Lanzhou petrochemical company.

Considerations on capacity expansion revamping and large-scale atmospheric and vacuum distillation unit are expounded in the light of frame, pipe rack and the unit construction.

Through the introduction of capacity expansion & reformation project in which the production capacity was increased by 50% in the large granule urea plant of Ningxia Petro-chemical company,the mult-item of technical reformation measures of process scheme,plant layout,equipment selection and structure improvement etc.

Reason was analyzed for affecting the production capacity in the large-sized chemical fertilizer plant of this company,technical measures were introduced for the capacity expansion & reformation;the effects of capacity expansion & reformation were summarized.

The ABS Plant production capacity is increased to 105 kt/a from 50 kt/a by capacity expansion revamp to the 50 kt/a ABS Plant using self-developed ABS production technology of internationally advanced level and through the retrofit to the dryer, gear pump and other auxiliary facilities and addition of equipment as agglomeration autoclave, dehydrator, SAN polymerization autoclave and extruder.