Benzene Production from Pygas - Cost Analysis - Benzene E12A


Book Description

This report presents a cost analysis of Benzene production from pyrolysis gasoline (pygas). The process examined is a typical hydrodealkylation process, also called bulk dealkylation process. First pygas is fractionated into 3 hydrocarbon cuts, a C5s stream and a heavies stream are generated as by-products. The remaining C6-C8 fraction is then directed to the hydrodealkylation step, in which the aromatics content in the process stream are converted into benzene This report was developed based essentially on the following reference(s): "Benzene", Ullmann's Encyclopedia of Industrial Chemistry, 7th edition Keywords: Aromatics, BTX, Diprolene, Toluene, Xylene, Houdry Pyrotol, Mitsubishi MHC, Bulk Dealkylation, CB&I Lummus




Paraxylene Production from Mixed Xylenes - Cost Analysis - Paraxylene E12A


Book Description

This report presents a cost analysis of para-Xylene production from mixed xylenes with o-xylene co-production. The process examined is a xylene isomerization process with ethylbenzene (EB) isomerization. In this process, p-Xylene is recovered from a mixture of C8 aromatics via an adsorption unit. The remaining xylenes as well as the ethylbenzene are isomerized and the product from isomerization is recycled to the adsorption unit. Part of the o-xylene is also recovered as by-product. This report was developed based essentially on the following reference(s): (1) US Patent 7301064, issued to UOP in 2007 (2) US Patent 3997620, issued to UOP in 1976 Keywords: Mixed Xylenes, C8 Aromatics, UOP, PAREX, Isomar, Axens, Eluxyl, ExxonMobil, Oparis, MHAI




Benzene Production from Pygas - Cost Analysis - Benzene E11A


Book Description

This report presents a cost analysis of Benzene production from pyrolysis gasoline (pygas) The process examined is a typical extractive distillation process. First pygas is fractionated into 3 hydrocarbon cuts, a C5s stream and a heavies stream are generated as by-products. The remaining C6s fraction is then fed to an extractive distillation system to recover benzene. This report was developed based essentially on the following reference(s): "Benzene", Ullmann's Encyclopedia of Industrial Chemistry, 7th edition Keywords: BTX, Aromatics, Hydrotreatment, Diprolene, Distapex, Lurgi, ED




Benzene Production from Pygas - Cost Analysis - Benzene E13A


Book Description

This report presents a cost analysis of Benzene production from pyrolysis gasoline (pygas). The process examined is a typical liquid-liquid extraction process, also called solvent extraction process. In this process, toluene, mixed xylenes and a C5s stream are generated as by-products. This report was developed based essentially on the following reference(s): "Benzene", Ullmann's Encyclopedia of Industrial Chemistry, 7th edition Keywords: Liquid-Liquid Solvent Extraction, BTX, Aromatics, Diprolene, LLE




Benzene Production from Reformate - Cost Analysis - Benzene E21A


Book Description

This report presents a cost analysis of Benzene production from reformate. The process examined is a typical sulfolane liquid-liquid extraction process. In this process, sulfolane is the solvent used in the extraction process. Toluene and mixed xylenes are generated as by-products. This report was developed based essentially on the following reference(s): "Benzene", Ullmann's Encyclopedia of Industrial Chemistry, 7th edition Keywords: Shell, UOP, Axens, Liquid-Liquid Solvent Extraction, BTX Distillation, Aromatics, Tetramethylene Sulfone, Tetrahydrothiophene-1,1-Dioxide, LLE




Benzene Production from Toluene - Cost Analysis - Benzene E34A


Book Description

This report presents a cost analysis of Benzene production from toluene. The process examined is similar to CB&I Lummus Detol process for toluene hydrodealkylation. In this process, toluene is converted into benzene and mixed xylenes. A mixed xylenes stream is generated as a by-product of this process. This report was developed based essentially on the following reference(s): (1) "DETOL®, LITOL®, and PYROTOL® Hydrodealkylation", Tech Sheet, CB&I Lummus Technology (2) "Benzene", Ullmann's Encyclopedia of Industrial Chemistry, 7th edition Keywords: On-Purpose Benzene Production, Houdry, Aromatics, BTX, Catalytic Dealkylation




Benzene Production from Toluene - Cost Analysis - Benzene E31A


Book Description

This report presents a cost analysis of Benzene production from toluene. The process examined is a typical selective toluene disproportionation process (STDP). In the STDP, toluene is converted into benzene and xylenes (mainly, p-xylene). Benzene is recovered from the reactor output via distillation and p-Xylene is separated as a by-product using a crystallization unit. This report was developed based essentially on the following reference(s): (1) US Patent 7230152, issued to UOP in 2007 (2) US Patent 4097543, issued to ExxonMobil in 1978 Keywords: Aromatics, BTX, ExxonMobil PxMax, UOP Px Plus, GTC GT-STDP




Nitrobenzene Production from Benzene - Cost Analysis - NB E12A


Book Description

This report presents a cost analysis of Nitrobenzene production from benzene and nitric acid. The process examined is similar to Chematur's adiabatic benzene nitration process. In this process, benzene, nitric acid, and sulfuric acid are reacted in a tubular nitrator. The product from nitration is washed and purified, producing technical-grade Nitrobenzene. This report was developed based essentially on the following reference(s): Keywords: Chematur, Benzene Nitration




Benzene Production from Naphtha - Cost Analysis - Benzene E51A


Book Description

This report presents a cost analysis of Benzene and p-Xylene production from straight-run naphtha. The process examined is an integrated aromatics complex. The industrial complex includes the following units: a naphtha hydrotreater, a Continuous Catalyst Regeneration (CCR) Reformer, a sulfolane liquid-liquid extraction, a BTX distillation train, a toluene disproportionation process (TDP) and a Parex/Isomar system. This report was developed based essentially on the following reference(s): "Benzene", Ullmann's Encyclopedia of Industrial Chemistry, 7th edition Keywords: Aromatics Complex, BTX, UOP Tatoray, CCR Platformer, Parex, Isomar




Ethylbenzene Production from Benzene and Ethylene - Cost Analysis - EB E12A


Book Description

This report presents a cost analysis of Ethylbenzene (EB) production from benzene and dilute ethylene. The process examined is a catalytic distillation (CD) process similar to CDTECH EB technology. In this process, benzene is alkylated with ethylene present in dilute ethylene feedstock (about 20 mol %) to form Ethylbenzene. This report was developed based essentially on the following reference(s): Keywords: Ethylbenzene, Ethylene, Benzene, Alkylation, CB&I Lummus, CDTECH EB, Catalytic Distillation