E.i. Dupont De Nemours and Company

Conocophillips Company

Conoco Inc.

Dupont Dow Elastomers Inc.

E. I. Du Pont Nemours and Co.

Dupont Industrial Biosciences Usa, LLC

Magellan Systems International LLC

Veolia North America Regeneration Services, LLC

Refining Technology Solutions, LLC

Hasan Dindi

Thanh Gia Ta

Alan Howard Pulley

Luis Eduardo Murillo

Vincent Adam Kuperavage, Jr

Sourav Kumar Sengupta

William H Manogue

Brian Boeger

Stuart N Milligan

John James Barnes

James Arnold Schultz

John Joseph Hagedorn

Scott Louis Webster

Sandeep Palit

Andrew Francis Gonzon

Vincent Adam Kuperavage

Norman Herron

David Richard Corbin

Ming-Hong Hung

Robert Donald Fallon

Joachim C Ritter

Isidor Hazan

David J Rodini

Andrew C Eliot

Michael Schelhaas

Theodore Augur Koch

Basil V Gregorovich

Doetze Jakob Sikkema

Ekaterini Korovessi

Georg Martin

Tianyan Niu

Juan Carlos Figueroa

Ralf Demuth

James A Schultz

Brian Paul Lamb

Donald James Loftus

Jeffrey D Caton

This disclosure relates to a process for producing diesel with reduced levels of sulfur. The process involves (a) providing a diesel feed comprising a diesel having a sulfur content in the range of about 20 to about 10,000 wppm; (b) feeding the diesel feed and a hydrogen rich gas to a reaction zone comprising a hydrotreating catalyst to produce a hydrotreated diesel effluent comprising diesel and hydrogen sulfide; and (c) removing hydrogen sulfide from the hydrotreated diesel effluent to produce a diesel product having a sulfur content no more than about 100 wppm; wherein hydrogen consumption in the reaction zone is in the range of about &#x2212;150 to about 150 scf/bbl.

Process for producing diesel with low levels of sulfur

A process to treat a heavy hydrocarbon feed in a liquid-full hydroprocessing reactor is disclosed. The heavy feed has a high asphaltenes content, high viscosity, high density and high end boiling point. Hydrogen is fed in an equivalent amount of at least 160 liters of hydrogen, per liter of feed, l/l (900 scf/bbl). The feed is contacted with hydrogen and a diluent, which comprises, consists essentially of, or consists of recycle product stream. The hydroprocessed product has increased value for refineries, such as a feed for an fluid catalytic cracking (FCC) unit.

Hydroprocessing of heavy hydrocarbon feeds in liquid-full reactors

A process for the hydroprocessing of a gas oil (GO) hydrocarbon feed to provide high yield of a diesel fraction. The process comprises a liquid-full hydrotreating reaction zone followed by a liquid-full hydrocracking reaction zone. A refining zone may be integrated with the hydrocracking reaction zone. Ammonia and other gases formed during the hydrotreatment are removed in a separation step prior to hydrocracking.

Gas oil hydroprocess

Novel liquid-full process for improving cold flow properties and increasing yield of middle distillate fuel feedstock by hydrotreating and dewaxing the feedstock in liquid-full reactors.

Process for improving cold flow properties and increasing yield of middle distillate feedstock through liquid full hydrotreating and dewaxing

This disclosure relates to a process for producing sulfuric acid with reduced levels of niter. The process involves (a) providing an absorption tower wherein sulfur trioxide is absorbed in a sulfuric acid feed having a first sulfuric acid solution to produce a sulfuric acid effluent having (i) a second sulfuric acid solution which has a higher concentration than the first sulfuric acid solution, (ii) a niter concentration greater than about 5 ppm (as NO), and (iii) a temperature greater than 100&#xb0; C.; and (b) contacting a first purifying agent comprising sulfamic acid and a second purifying agent comprising hydrogen peroxide with the sulfuric acid effluent to form a treated sulfuric acid effluent, the treated sulfuric acid effluent being maintained at a temperature of greater than 100&#xb0; C. for a maintenance period of at least about 1 minute.

Process for producing sulfuric acid with low levels of niter

A process for the hydroprocessing of a low-value light cycle oil (LCO) hydrocarbon feed to provide a high-value diesel-range product. The process comprises a hydrotreatment stage followed by a hydrocracking stage, each of which is conducted under liquid-full reaction conditions wherein substantially all the hydrogen supplied to the hydrotreating and hydrocracking reactions is dissolved in the liquid-phase hydrocarbon feed. Ammonia and optionally other gases formed during hydrotreatment are removed in a separation step prior to hydrocracking. The LCO feed is advantageously converted to diesel in high yield with little loss of hydrocarbon to naphtha.

Hydroprocessing light cycle oil in liquid-full reactors

A process of hydroprocessing a hydrocarbon in a down flow reactor comprising one or more hydroprocessing-catalyst beds. The hydrocarbon feed is mixed with hydrogen and optionally diluent to form a liquid feed mixture wherein hydrogen is dissolved in the mixture, and the liquid feed mixture is introduced into the down flow reactor under hydroprocessing conditions. The hydroprocessing-catalyst bed(s) are liquid-full and the feed reacts by contact with the catalyst. Hydrogen gas is injected into at least one of the hydroprocessing-catalyst beds such that at least part of the hydrogen consumed in that bed is replenished and the liquid-full condition is maintained. In a multi-bed reactor, hydrogen gas may be injected into more than one or all of the hydroprocessing-catalyst beds.

Process for direct hydrogen injection in liquid full hydroprocessing reactors

This disclosure relates to liquid-full processes for hydroprocessing a light cycle oil (LCO). The processes involve hydrotreatment followed by selective ring opening in the presence of hydrotreating catalyst and selective ring opening catalyst respectively. The selective ring opening catalyst can be either zeolite ring opening catalyst or amorphous ring opening catalyst. In aspects of zeolite ring opening catalyst, the volume ratio of the total amount of the zeolite ring opening catalyst to the total amount of the hydrotreating catalyst is from about 0.2 to about 1.5. In aspects of amorphous ring opening catalyst, the volume ratio of the total amount of the amorphous ring opening catalyst to the total amount of the hydrotreating catalyst is from about 0.2 to about 3.

Liquid-full hydrotreating and selective ring opening processes

A process for hydroprocessing hydrocarbons in a combined targeted pretreatment and selective ring-opening unit wherein the targeted pretreatment comprises at least two stages in a single liquid recycle loop. The process operates as a liquid-full process, wherein all of the hydrogen dissolves in the liquid phase. Heavy hydrocarbons and light cycle oils can be converted in the process to provide a liquid product having over 50% in the diesel boiling range, with properties to meet use in low sulfur diesel.

Targeted pretreatment and selective ring opening in liquid-full reactors

The present invention provides a process for hydroprocessing comprising treating a hydrocarbon feed in a first two-phase hydroprocessing zone having a liquid recycle, producing product effluent, which is contacted with a catalyst and hydrogen in a downstream three-phase hydroprocessing zone, wherein at least a portion of the hydrogen supplied to the three-phase zone is a hydrogen-rich recycle gas stream. Optionally, the product effluent from the first two-phase hydroprocessing zone is fed to a second two-phase hydroprocessing zone containing a single-liquid-pass reactor. The two-phase hydroprocessing zones comprise two or more catalyst beds disposed in liquid-full reactors. The three-phase hydroprocessing zone comprises one or more single-liquid-pass catalyst beds disposed in a trickle bed reactor.

Two phase hydroprocessing process as pretreatment for tree-phase hydroprocessing process

The present invention provides a process for hydroprocessing hydrocarbons in liquid full reactors with one or more independent liquid recycle streams. The process operates as a liquid-full process, wherein all of the hydrogen dissolves in the liquid phase and one or more of the recycle streams may actually be zero. Hydrocarbons can be converted in the process to provide liquid products such as clean fuels with multiple desired properties.

Liquid-full hydroprocessing to improve sulfur removal using one or more liquid recycle streams

The present invention provides a process for hydroprocessing hydrocarbons with uneven catalyst volume distribution among two or more catalyst beds. The process operates as a liquid-full process, wherein all of the hydrogen dissolves in the liquid phase. Hydrocarbons can be converted in the process to provide a liquid product including clean fuels with multiple desired properties such as low density and high cetane number.

Hydroprocessing process using uneven catalyst volume distribution among catalyst beds in liquid-full reactors

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Wilmington, DE, United States of America

Hasan Dindi