Cuneo, Paul L. (Equilon Enterprises LLC) | Culler, David (Equilon Enterprises LLC) | Daigle, Kenneth (Equilon Enterprises LLC) | Drosjack, Michael J. (Equilon Enterprises LLC) | Gilmer, Lee (Equilon Enterprises LLC) | Johnson, Gregory (Equilon Enterprises LLC) | Stern, Lon (Equilon Enterprises LLC)


OVERALL REFINERY EMISSIONS CONTROL STRATEGIES OVERALL REFINERY EMISSIONS CONTROL STRATEGIES Paul L. Cuneo, Equilon Enterprises LLC; David Culler, Kenneth Daigle, Michael J. Drosjack, Lee Gilmer, Gregory Johnson, and Lon Stern, Equilon Enterprises LLC Abstract Strategies for control of refinery gas emissions are discussed around the following topic areas: · Process Integration · Sulfur Recovery · Flare Systems · Fugitive Emissions · Furnace Emissions Each of the topic areas is explored with a range of options presented for emission controls based upon current technology and with a look at promising technology developments for the future. helps identify additional heat integration


within individual process units and between Refinery gas emissions have come process units. The following examples have all under increasing scrutiny by regulators around come from recent energy improvement the world. With the drive to reduce activities in our facilities: atmospheric emissions, technologies have been Procedural opportunities include: developed in several areas to help refiners · Optimising distillation operations to meet environmental regulations in cost minimize column pressure and effective ways. This paper explores five topic product overpurification areas to look at options for reducing emissions · Maximizing distillation pumparound and with a look at promising technology heat recovery developments for the future. The five areas · Eliminating intermediate product are: recycle · Process Integration · Maximizing hot rundown between · Sulfur Recovery processing units · Flare Emissions · Maintaining heat exchange network · Fugitive Emissions performance through periodic · Furnace Emissions cleaning 1. PROCESS INTEGRATION · Maximizing heat recovery from hydrotreating reactions through One of the most cost effective ascending reactor temperature profiles strategies to reducing refinery emissions is · Eliminating routine flaring through through more energy efficient operation. source control and flare header gas Unlike many environmental emission recovery to fuel reduction activities, energy efficiency · Maximizing fuel conversion improvements often have a positive economic efficiency by optimising furnace justification. Basis experience in our systems, operation overall refinery energy consumption for the · Optimising steam system operation average US refiner can be reduced 20 ­ 25% by eliminating low pressure venting, before the Net Present Value of the minimizing turbine exhaust improvements turns negative. condensing and biasing steam This type of energy reduction production to the most efficient opportunity is present in many existing boilers refineries and for new unit construction. The · Controlling amine system analysis technique that is used takes a systems overcirculation approach to studying energy consumption. · More capital-intensive improvements This methodology helps us find not only the can be obtained through: individual equip