Exergy and Energy Analysis of Fluid Catalytic Cracking Unit in Kaduna Refining and Petrochemical Company

Abstract

The energy and exergy analysis of FCCU of Kaduna Refining and Petrochemical Company (KRPC) Nigeria is presented. The primary objectives of this work were to analyze the system components separately and to identify and quantify the sites having largest energy and exergy losses. The performance of the plant was estimated by a component wise simulation using Aspen Hysys software and a detailed break-up of energy and exergy losses for the considered plant has been presented. The ideal work was calculated to be (-74.169 MW) which characterized the system as work producing. Energy losses mainly occurred in the fractionator column where 46.6MW is lost to the environment while only 3.69, 1.77 and 0.68 MW was lost from the condensers, other equipment and absorbers respectively. The percentage exergy and second law efficiencies of the system was found to be 61.20 and 24.77 %.

Maximization of Gasoline in an Industrial Fluidized Catalytic Cracking Unit

“…The feed and catalyst characteristic and other parameters used in this simulation. Most of the parameters were obtained from the industry and literature. ,, …”

“…Specifications of Variables R go , R gl , R gs , R ck , K 1 , K 2 , K 3 , K 4 , K 5 , Q react , ϕ c , α c , A ptc , Ω, ε c , ε g , C ck , ρ g , P, T pr , G c , f rc , f rg , M wg , C pg , β 1 , β 2 , β 3 , β 4 , Kf, T MeABP , Sl, T VABP , T 10ASTM , T 30ASTM , T 50ASTM , T 70ASTM , T 90ASTM , h p , K g , M WM , μ g , T pc , P pc , C f , C d , Re c , Re g , C pc , M wH2 , M wC1 , M wC2 , M wC3 , F g , F c , M wC4 , ρ c , g, R, E 1 , E 2 , E 3 , E 4 , E 5 , k 10 , k 20 , k30 , k 40 , k 50 , ΔH 1 , ΔH 2 , ΔH 3 , ΔH 4 , ΔH 5 , d c , α c* , R AN , E c , α c0 , C ckCL1 , D, S g , T 10TBP , T 20TBP , T 30TBP , T 40TBP , T 50TBP , b 10 , b 20 , b 30 , b 70 , b 90 , a 10 , a 30 , a 50 , a 70 , a 90 , μ pr , M wgo , M wgl , M wgs , M wck and S c .…”

Tailoring Surface Adsorption and Reactivity of Fullerene-Based Compounds: A Theoretical Probe into C2–Gas–Fullerene Surface Interactions

“…An industrially important product obtained from this process is ethylene which is used subsequently for polyethylene synthesis. However, during pyrolysis, the process stream often gets contaminated with acetylene which is undesired for ethylene polymerization. − Selective removal of acetylene is, therefore, very crucial to get rid of this undesired product. Acetylene acts as a poison to the downstream Ziegler–Natta catalyst used for polymerization of ethylene.…”

A Critical Interpretation and Quantitative Extension of the Sama-Szargut Second Law Rules in an Extended Exergy Perspective

“…The cost calculation now is based on the exergy of the oil in the well, e cr (assumed to be equal to e chem ) and becomes more involved because at each step it is necessary to include in the cost calculations the labour-, capital-and environmental remediation equivalent exergies "invested" in the process. For the present discussion, the ee-costs have been extracted from the results of several published results [29][30][31][32][33][34] and are shown in Table 2. We obtain:…”