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Title: Catalytic multi-stage process for hydroconversion and refining hydrocarbon feeds

Abstract

A multi-stage catalytic hydrogenation and hydroconversion process for heavy hydrocarbon feed materials such as coal, heavy petroleum fractions, and plastic waste materials. In the process, the feedstock is reacted in a first-stage, back-mixed catalytic reactor with a highly dispersed iron-based catalyst having a powder, gel or liquid form. The reactor effluent is pressure-reduced, vapors and light distillate fractions are removed overhead, and the heavier liquid fraction is fed to a second stage back-mixed catalytic reactor. The first and second stage catalytic reactors are operated at 700-850.degree. F. temperature, 1000-3500 psig hydrogen partial pressure and 20-80 lb./hr per ft.sup.3 reactor space velocity. The vapor and light distillates liquid fractions removed from both the first and second stage reactor effluent streams are combined and passed to an in-line, fixed-bed catalytic hydrotreater for heteroatom removal and for producing high quality naphtha and mid-distillate or a full-range distillate product. The remaining separator bottoms liquid fractions are distilled at successive atmospheric and vacuum pressures, low and intermediate-boiling hydrocarbon liquid products are withdrawn, and heavier distillate fractions are recycled and further upgraded to provide additional low-boiling hydrocarbon liquid products. This catalytic multistage hydrogenation process provides improved flexibility for hydroprocessing the various carbonaceous feedstocks and adjusting tomore » desired product structures and for improved economy of operations.« less

Inventors:
 [1];  [2]
  1. (Yardley, PA)
  2. (Cranbury, NJ)
Issue Date:
Research Org.:
HYDROCARBON RESEARCH INC
OSTI Identifier:
873565
Patent Number(s):
6190542
Assignee:
Hydrocarbon Technologies, Inc. (Lawrenceville, NJ) NETL
DOE Contract Number:  
AC22-92PC92148
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
catalytic; multi-stage; process; hydroconversion; refining; hydrocarbon; feeds; hydrogenation; heavy; feed; materials; coal; petroleum; fractions; plastic; waste; feedstock; reacted; first-stage; back-mixed; reactor; highly; dispersed; iron-based; catalyst; powder; liquid; form; effluent; pressure-reduced; vapors; light; distillate; removed; overhead; heavier; fraction; fed; stage; reactors; operated; 700-850; degree; temperature; 1000-3500; psig; hydrogen; partial; pressure; 20-80; lb; space; velocity; vapor; distillates; streams; combined; passed; in-line; fixed-bed; hydrotreater; heteroatom; removal; producing; quality; naphtha; mid-distillate; full-range; product; remaining; separator; bottoms; distilled; successive; atmospheric; vacuum; pressures; intermediate-boiling; products; withdrawn; recycled; upgraded; provide; additional; low-boiling; multistage; provides; improved; flexibility; hydroprocessing; various; carbonaceous; feedstocks; adjusting; desired; structures; economy; operations; stage catalytic; carbonaceous feedstocks; hydrogenation process; hydrogen partial; liquid fractions; reactor effluent; psig hydrogen; vacuum pressure; hydrocarbon liquid; process provides; conversion process; catalytic hydrogenation; provide additional; provides improved; feed material; waste material; waste materials; partial pressure; liquid products; plastic waste; liquid product; stage reactor; liquid fraction; low-boiling hydrocarbon; light distillate; feed materials; liquid form; space velocity; catalytic reactor; desired product; vacuum pressures; petroleum fraction; highly dispersed; heavy hydrocarbon; distillate fraction; distillate fractions; hydrocarbon feed; heavy petroleum; bed catalytic; carbonaceous feed; reactor space; catalytic reactors; catalytic multi-stage; effluent stream; hydroconversion process; stage hydrogenation; carbonaceous feedstock; based catalyst; /208/

Citation Formats

Comolli, Alfred G., and Lee, Lap-Keung. Catalytic multi-stage process for hydroconversion and refining hydrocarbon feeds. United States: N. p., 2001. Web.
Comolli, Alfred G., & Lee, Lap-Keung. Catalytic multi-stage process for hydroconversion and refining hydrocarbon feeds. United States.
Comolli, Alfred G., and Lee, Lap-Keung. Mon . "Catalytic multi-stage process for hydroconversion and refining hydrocarbon feeds". United States. https://www.osti.gov/servlets/purl/873565.
@article{osti_873565,
title = {Catalytic multi-stage process for hydroconversion and refining hydrocarbon feeds},
author = {Comolli, Alfred G. and Lee, Lap-Keung},
abstractNote = {A multi-stage catalytic hydrogenation and hydroconversion process for heavy hydrocarbon feed materials such as coal, heavy petroleum fractions, and plastic waste materials. In the process, the feedstock is reacted in a first-stage, back-mixed catalytic reactor with a highly dispersed iron-based catalyst having a powder, gel or liquid form. The reactor effluent is pressure-reduced, vapors and light distillate fractions are removed overhead, and the heavier liquid fraction is fed to a second stage back-mixed catalytic reactor. The first and second stage catalytic reactors are operated at 700-850.degree. F. temperature, 1000-3500 psig hydrogen partial pressure and 20-80 lb./hr per ft.sup.3 reactor space velocity. The vapor and light distillates liquid fractions removed from both the first and second stage reactor effluent streams are combined and passed to an in-line, fixed-bed catalytic hydrotreater for heteroatom removal and for producing high quality naphtha and mid-distillate or a full-range distillate product. The remaining separator bottoms liquid fractions are distilled at successive atmospheric and vacuum pressures, low and intermediate-boiling hydrocarbon liquid products are withdrawn, and heavier distillate fractions are recycled and further upgraded to provide additional low-boiling hydrocarbon liquid products. This catalytic multistage hydrogenation process provides improved flexibility for hydroprocessing the various carbonaceous feedstocks and adjusting to desired product structures and for improved economy of operations.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {1}
}

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