Choosing the parameters of the process of producing naphthalene for production of phthalic anhydride

Journal Article · Sat Nov 06 04:00:00 EST 1982 · Coke Chem. USSR (Engl. Transl.); (United States)

OSTI ID:5262950

Katsobashvili, Y R

Phthalic anhydride production rates in the USSR require that added source of adequate purity of naphthalene feedstock be developed. Optimization studies of the feasibility of producing C/sub 10/H/sub 8/-feedstock by hydrocracking (500 Kpa; Al-Ca-Mo catalyst) from naphthalene-wash oil fraction from coal tar (Kemerovo Coke Works), using a benzene diluent (to suppress the formation of benzene homologues), reported herein provide process conditions which will permit commercial producton of high quality C/sub 10/H/sub 8/ and also sulfur-free benzene for caprobactum production. Optimum conditions were defined using the full factorial experiment method (independant variables: temperature and space-velocity), by regression analysis of output parameters (yields (%) of hyrogenate, C/sub 10/H/sub 8/, H/sub 2/, hydrocarbon gases, and coke and the melting point of the C/sub 10/H/sub 8/ fraction). At optimum conditions the yield of C/sub 10/H/sub 8/ was 105% of its feedstock content. These data reveal that in the range of conditions studied, temperature and space velocity exert opposing effects on the output parameters and that the system is nearly in the steady state condition.

• Research Organization: Inst. of Petrochemical Synthesis, USSR
• OSTI ID: 5262950
• Journal Information: Coke Chem. USSR (Engl. Transl.); (United States), Journal Name: Coke Chem. USSR (Engl. Transl.); (United States) Vol. 6; ISSN COKCA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010500* -- Coal
Lignite
& Peat-- Products & By-Products
ADDITIVES
AROMATICS
BENCH-SCALE EXPERIMENTS
BENZENE
CHEMICAL FEEDSTOCKS
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COAL TAR OILS
COMPARATIVE EVALUATIONS
CONDENSED AROMATICS
CRACKING
DECOMPOSITION
FUNCTIONAL MODELS
HYDROCARBONS
HYDROCRACKING
MATHEMATICS
MEDIUM PRESSURE
NAPHTHALENE
OILS
OPTIMIZATION
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PARAMETRIC ANALYSIS
PROCESS DEVELOPMENT UNITS
PYROLYSIS
REGRESSION ANALYSIS
SENSITIVITY ANALYSIS
STATISTICS
SYNTHESIS
THERMOCHEMICAL PROCESSES
YIELDS