Efficient Separations Technologies for Petroleum Refining. R. Bruce Eldridge Process Science and Technology Center The University of Texas
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1 Efficient Separations Technologies for Petroleum Refining R. Bruce Eldridge Process Science and Technology Center The University of Texas
2 PROCESS SCIENCE &TECHNOLOGY CENTER UT - Austin Texas A&M
3 PROCESS SCIENCE &TECHNOLOGY CENTER Alternative Sources for Fuels
4 PROCESS SCIENCE &TECHNOLOGY CENTER Next Generation Fuel Consumers
5 Carbon Dioxide Reduced energy CO2 capture and sequestration approaches are critical if greenhouse gas emissions are to be reduced
6 PROCESS SCIENCE &TECHNOLOGY CENTER Solvent Selection for CO2 Capture
7 Distillation The Dinosaur Lives!!
8 PROCESS SCIENCE &TECHNOLOGY CENTER Reliable / Predictive Models
9 Dr. Ross Taylor - Department of Chemical Engineering Energy Consumption & Distillation Lines Angelo Lucia (University of Rhode Island) and Ross Taylor (Clarkson University) New approach to conceptual design of distillation systems based on the length of the composition profile. Longest distillation lines are approximations to boundaries most difficult separations least energy efficient Red: Shortest feasible stripping line to meet specified purity Blue: boundary Shortest distillation lines are least difficult most energy efficient New approach can accommodate mass transfer affects; this influences: column height,minimum reflux,process feasibility.
10 Dr. Ross Taylor - Department of Chemical Engineering ChemSep: CAPE-OPEN Compliant Column Simulator Ross Taylor and Harry Kooijman y i, L V L L E x i, E N i E y, x I I i i y i, E V E L L x i, L Features the original nonequilibrium column model. Tested with Aspen Plus, HYSYS, Pro/II, UNISIM Design ChemSep Lite supplied free with COCO ( Image shows ChemSep with COCO
11 PROCESS SCIENCE &TECHNOLOGY CENTER High Capacity Column Internals
12 PROCESS SCIENCE &TECHNOLOGY CENTER Novel Technologies for Chemical Recovery High temp: 42ºC Ethylene in NMP (base case) 0.8 Ethylene in 42ºC Cryogenic Distillation System Moles C2 Mole Cu Ethane in NMP (base case) 0.2 Ethane in 42ºC Partial Pressure C2, psia
13 PROCESS SCIENCE &TECHNOLOGY CENTER Coupled Reactive / Separations for Chemical Production Catalytic section Reactive Distillation
14 Adsorption Processes Optimized Cycles / Configurations Novel adsorbent materials
15 PROCESS SCIENCE &TECHNOLOGY CENTER Optimized Adsorption Cycles / Configurations To Cabin P H P H P L F To Space
16 Selective Adsorbents Dr. Ralph Yang Department of Chemical Engineering Breakthrough of total sulfur in fixed-bed adsorber with SBA-15 ( ), CuCl/SBA-15 ( ) and PdCl2/SBA-15 ( ) for JP-5 light fraction (841 ppmw-s) Thiophenic sulfur molecules are selectively bonded to the Cu+ sites on the cavity of faujasite zeolite at room temperature Cumulative effluent volume/sorbent weight (ml/g)
17 Membrane Technology
18 Zeolite Membrane Performance Alan R. Greenberg and Richard D. Noble University of Colorado at Boulder Superior performance to polymeric membranes Upper bound Flow through non-zeolitic pores zeolite crystals CO 2 permeability x10 10 cm 2 (STP)/(s.cmHg) Support
19 Polymer-Metallic Composite Membranes Alan R. Greenberg and Richard D. Noble University of Colorado at Boulder H N N N N H n High Tg polybenzimidazole (PBI)- based Composite Membranes Thermally stable (Tg ~ 450 C): Facilitates process integration Chemically resistant: Sulfur tolerant at operation temperatures Optimize % CO2 capture and minimize cost
20 Dr. Winston Ho Department of Chemical Engineering Example: Polyvinylalcohol- Containing Amine Membrane H H H H Membrane C H C OH C H C OH CO 2 R 3 N CO 2 R 3 N CO 2 + R 3 N H 2
21 Dr. Winston Ho Department of Chemical Engineering CO2/H2 Selectivity High CO 2 /H 2 Selectivity Obtained CO2/H2 Selectivity High CO 2 /H 2 Selectivity Obtained atm Feed Pressure Temperature ( o C) atm Feed Pressure Temperature ( o C)
22 PROCESS SCIENCE &TECHNOLOGY CENTER Fouling Resistant Membranes Coating 2μm PSF Support Oil/water emulsion (1,500 ppm) Δp=6.8 atm Flux ( L / (m 2 hr)) Coated PSf 80 wt.% H 2 O Uncoated PSf Time (hr)
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