Degradation and isomerization of isoparaffins while in contact with sulfuric acid in alkylation units: Chemistry and reaction kinetics

Journal Article · Fri Apr 01 04:00:00 EST 1994 · Industrial and Engineering Chemistry Research; (United States)

DOI:https://doi.org/10.1021/ie00028a009· OSTI ID:7041194

Ende, D.J. am; Albright, L F ^[1]

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1. Purdue Univ., West Lafayette, IN (United States). School of Chemical Engineering

When isoparaffins such as those produced during the alkylation of isobutane with C[sub 3]--C[sub 5] olefins are contacted with H[sub 2]SO[sub 4], both isomerization and degradation reactions occur. The degradation products consist of mainly C[sub 4]--C[sub 12] isoparaffins and acid-soluble oils. Experimental runs were made with the following hydrocarbons: 2,2,4-trimethylpentane, 2,3-dimethylpentane, two commercial alkylates, and mixtures of isobutane and alkylates. Both alkylate quality and quantity decreased significantly due primarily to the degradation reactions of both commercial alkylates and trimethylpentanes. Correlations were developed to predict the levels of degradation of alkylates by acids of different compositions. Methods to minimize these undesired reactions in commercial alkylation units are proposed.

• OSTI ID: 7041194
• Journal Information: Industrial and Engineering Chemistry Research; (United States), Journal Name: Industrial and Engineering Chemistry Research; (United States) Vol. 33:4; ISSN IECRED; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
2-METHYLPROPANE
ALCOHOLS
ALKANES
ALKYLATION
CATALYTIC EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DECOMPOSITION
FUELS
GASOLINE
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INORGANIC ACIDS
ISOMERIZATION
KINETICS
LIQUID FUELS
ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
REACTION KINETICS
SULFURIC ACID
SYNTHESIS