Major Acquisition From Iocl Panipat Debutanizer Gas

This is the Summits First Hydrocarbon Gas Dryer Package order in the stream of Debutanizer Overhead Gas.

Important Highlights and Learnings from this project:

This was our first time executing the Hydrocarbon Gas Dryer, which provided a valuable opportunity to gain a detailed understanding of the gas process aspect and engineering implementation.

The following points highlight the new executions in the history of Summits:

• According to the project specifications, we selected Self-Reinforced (Lip type) nozzles for vessels that experience temperature cyclic loadings.
• Post Weld Heat Treatment is applicable for the entire vessel, as required by the project, considering the cyclic loadings.
• The project requirement led us to select AES type heat exchangers.
• Tube sheets and all the Girth flanges of the heat exchanger are made of forged material, as specified by the project.
• The Girth flanges of the heat exchanger are Weld Neck Raised Flanges, as per the project specification.
• For the tube and tube sheets of the heat exchanger, we used Super Duplex Stainless Steel, meeting the minimum metallurgy requirement.
• The top platform support for the adsorber vessel is considered to be from the vessel itself.
• The legs of the adsorber vessel are supported by Lug Type Supports, as specified by the project.
• Dual Level Transmitters are used whenever credible causes are possible, following the process scenario from the HAZOP Study.
• In order to avoid blower damage and implement recommendations from the HAZOP study, we added an extra 3 tapping’s in the regeneration side orifice assembly flow element along with 3 additional transmitters. This ensures additional LT (low-low flow) 2oo3 combination for tripping the blower.
• To remove maximum moisture from the separator, we included filter coalescer elements along with demister pads in the Knock Out Drum.
• Fire Proofing nuts are installed at the legs of all vessels for performing fireproofing at the site.
• All drainage lines of the process are connected to both CBD and OWS service lines, following the project philosophy.
• Positive isolation is implemented for all applicable vessels, process side, and drain lines according to project specifications.
• For all horizontal lines, instrument tapping’s are placed on the top side, based on the basic instrumentation philosophy.
• We gained knowledge about the basic calculations and selection of Pressure Relief Valves.
• To ensure free flow drainage, vent lines are sloped with 45° elbows reaching the top of the header lines.
• Shoe type supports are used for insulating all pipe lines.
• Side entry ladders are included for the entire package.
• All the top platform considered as Grating type rather than Chequred plate as per the project requirement.