Alkylation Capacity Expansion
Client: Valero Energy Corp.
Location: St. Charles, Louisiana
Summary
We provided front-end engineering design services to expand alkylation capacity at the Valero St. Charles Refinery. The primary business objective is to take advantage of untapped alkylation feedstocks and process incremental olefins.
Services
- FEP-2
- FEP-3
- Engineer-procure-construct (EPC)
Features
The project consists of a new Lummus CDAlky unit with feed fractionation and selective hydrogenation technology to process olefins. Recent changes to the St. Charles refinery are expected to increase FCC olefin availability. The new alkylation unit consists of these process units:
- Feed fractionation with selective hydrogenation technology
- CDAlky reaction system
- Refrigeration
- Acid blowdown and drain drums
- Steam/condensate system
A small revamp to the existing alkylation unit is part of the project scope. The revamp consists of:
- Interconnecting infrastructure between existing and new units including tie-ins
- New acid transfer pumps
The project also consists of an outside battery limits (OSBL) scope by the OSBL contractor and includes:
- New cooling tower
- New isobutane storage sphere
- New motor control center (MCC) to support the new alkylation unit
- Electrical feed to new MCC
- OSBL lines and tie-ins from the new unit
