CONSER offers relevant experience and know-how in revamping of Catalytic Cracking units by a deep practical knowledge of the effects of the operating parameters in the reaction and fractionation sections.
Catalytic cracking projects carried-out by CONSER include:

• Revamping and modernization studies
• Improvement of product fractionation
• Optimization of gas concentration section to maximize LPG recovery
• Arrangement of main fractionation system to improve products quality and capacity by debottlenecking of gas compressor performances
• High purity propylene production by low level heat available from process stream

REFERENCES

Number of Projects	24
Number of Units	7
Capacity Range	From 20000 to 55000 BPSD

PROCESS DESCRIPTION

Reactor effluent is quenched and fractionated in the Main Tower producing gases and light naphtha (LCN) as overhead products. Heavy Naphtha and LCO are obtained as sidestreams and HCGO cut from the bottom of the Main Tower.
Gas is compressed, recontacted with LCN and washed by lean oil circulation in order to maximize LPG recovery.
LCN cut is then deethanized and debutanized: LPG are fractionated into propylene, propane, butenes and butanes in a sequence of distillation columns.

CASE HISTORY

Project type:	FCC revamping	FCC revamping
Capacity, BPSD	43000	34000
Feed type	S.R. VGO	HDS VGO
Project Scope	max C3- recovery incr. cap. to 52000 BPSD	incr. capacity high purity C3-