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Title: Relating feedstock composition to product slate and composition in catalytic cracking: 1. Bench scale experiments with liquid chromatographic fractions from Wilmington, CA, >650{degree}F resid

Abstract

The catalytic cracking behavior of compound types in the >650{degree}F resid from a Wilmington, CA, 14.2{degree} API crude was investigated. Liquid Chromatography (LC) was used to separate the resid into eight fractions. These fractions were used as feedstocks for a bench scale fluidized catalytic cracking (FCC) unit. Gasoline was produced almost exclusively from neutral (65 % of whole resid) components. Acidic and basic types were partially converted to coke plus small amounts of C{sub l} and C{sub 2} gases, with the balance primarily carrying over as heavy liquid products. Gasoline composition depended on the type and quantity of polar compounds present in the feed because both acidic and basic compounds inhibited cracking reactions ({beta}-scission, hydrogen transfer, etc.) to varying degrees. In accordance with prior work, basic nitrogen compounds exhibited the largest inhibitory effect on cracking. Their effect is dependent on concentrations up to a limiting value which may correspond to saturation of susceptible catalyst sites. On an equal weight basis, the effect of high boiling (high molecular weight) bases was less than those occurring in the 650--1000{degree}F distillate range. Partitioning of nitrogen present in acidic (e.g. carbazole) forms in the feed into liquid products was greater than for basic nitrogen.more » Thiophenic forms of sulfur partitioned more into liquid and less into gaseous (H{sub 2}S) products than sulfide-type sulfur. Coke yield was approximately proportional to microcarbon residue test results for all feeds. Ongoing work with additional feedstocks has indicated behavior similar to that of Wilmington. Selected Wilmington liquid products are undergoing detailed analysis in order to determine relationships between feed versus product composition, particularly with respect to acidic and basic types.« less

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
National Inst. for Petroleum and Energy Research, Bartlesville, OK (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10133290
Report Number(s):
NIPER-658
ON: DE94008171; BR: 35AA15000/35AA20000
DOE Contract Number:
FC22-83FE60149
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Sep 1993
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; PETROLEUM RESIDUES; CATALYTIC CRACKING; GASOLINE; CHEMICAL REACTION YIELD; CHEMICAL COMPOSITION; COKE; LIQUID COLUMN CHROMATOGRAPHY; CHEMICAL FEEDSTOCKS; FLUIDIZED BEDS; BENCH-SCALE EXPERIMENTS; FLOWSHEETS; EXPERIMENTAL DATA; 020400; 020500; 023000; PROCESSING; PRODUCTS AND BY-PRODUCTS; PROPERTIES AND COMPOSITION

Citation Formats

Green, J.B., Zagula, E.J., Reynolds, J.W., Wandke, H.H., Young, L.L., and Chew, H. Relating feedstock composition to product slate and composition in catalytic cracking: 1. Bench scale experiments with liquid chromatographic fractions from Wilmington, CA, >650{degree}F resid. United States: N. p., 1993. Web. doi:10.2172/10133290.
Green, J.B., Zagula, E.J., Reynolds, J.W., Wandke, H.H., Young, L.L., & Chew, H. Relating feedstock composition to product slate and composition in catalytic cracking: 1. Bench scale experiments with liquid chromatographic fractions from Wilmington, CA, >650{degree}F resid. United States. doi:10.2172/10133290.
Green, J.B., Zagula, E.J., Reynolds, J.W., Wandke, H.H., Young, L.L., and Chew, H. Wed . "Relating feedstock composition to product slate and composition in catalytic cracking: 1. Bench scale experiments with liquid chromatographic fractions from Wilmington, CA, >650{degree}F resid". United States. doi:10.2172/10133290. https://www.osti.gov/servlets/purl/10133290.
@article{osti_10133290,
title = {Relating feedstock composition to product slate and composition in catalytic cracking: 1. Bench scale experiments with liquid chromatographic fractions from Wilmington, CA, >650{degree}F resid},
author = {Green, J.B. and Zagula, E.J. and Reynolds, J.W. and Wandke, H.H. and Young, L.L. and Chew, H.},
abstractNote = {The catalytic cracking behavior of compound types in the >650{degree}F resid from a Wilmington, CA, 14.2{degree} API crude was investigated. Liquid Chromatography (LC) was used to separate the resid into eight fractions. These fractions were used as feedstocks for a bench scale fluidized catalytic cracking (FCC) unit. Gasoline was produced almost exclusively from neutral (65 % of whole resid) components. Acidic and basic types were partially converted to coke plus small amounts of C{sub l} and C{sub 2} gases, with the balance primarily carrying over as heavy liquid products. Gasoline composition depended on the type and quantity of polar compounds present in the feed because both acidic and basic compounds inhibited cracking reactions ({beta}-scission, hydrogen transfer, etc.) to varying degrees. In accordance with prior work, basic nitrogen compounds exhibited the largest inhibitory effect on cracking. Their effect is dependent on concentrations up to a limiting value which may correspond to saturation of susceptible catalyst sites. On an equal weight basis, the effect of high boiling (high molecular weight) bases was less than those occurring in the 650--1000{degree}F distillate range. Partitioning of nitrogen present in acidic (e.g. carbazole) forms in the feed into liquid products was greater than for basic nitrogen. Thiophenic forms of sulfur partitioned more into liquid and less into gaseous (H{sub 2}S) products than sulfide-type sulfur. Coke yield was approximately proportional to microcarbon residue test results for all feeds. Ongoing work with additional feedstocks has indicated behavior similar to that of Wilmington. Selected Wilmington liquid products are undergoing detailed analysis in order to determine relationships between feed versus product composition, particularly with respect to acidic and basic types.},
doi = {10.2172/10133290},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Sep 01 00:00:00 EDT 1993},
month = {Wed Sep 01 00:00:00 EDT 1993}
}

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