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Methods and apparatuses for processing renewable feedstocks

a technology of feedstock and method, applied in the direction of liquid-gas reaction process, chemistry apparatus and process, organic chemistry, etc., to achieve the effect of reducing mass flow ra

Inactive Publication Date: 2014-10-02
UOP LLC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

The patent describes methods and apparatuses for processing a renewable feedstock to produce valuable chemicals, such as branched paraffins. The technical effects of this patent include improved yields of branched paraffins and reduced production of unwanted by-products.

Problems solved by technology

Unfortunately, further improvements are needed for processing renewable feedstocks to produce diesel or jet fuels with increased branched paraffin content to lower their corresponding cloud and / or freeze points.

Method used

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  • Methods and apparatuses for processing renewable feedstocks
  • Methods and apparatuses for processing renewable feedstocks

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Embodiment Construction

[0012]The following Detailed Description is merely exemplary in nature and is not intended to limit the various embodiments or the application and uses thereof. Furthermore, there is no intention to be bound by any theory presented in the preceding background or the following detailed description.

[0013]Various embodiments contemplated herein relate to methods and apparatuses for processing a renewable feedstock. The exemplary embodiments taught herein contact the renewable feedstock with a hydroprocessing catalyst in the presence of hydrogen in a deoxygenating reaction zone at hydroprocessing conditions effective to form a deoxygenating reaction zone effluent. As used herein, the term “zone” refers to an area including one or more equipment items and / or one or more sub-zones. Equipment items can include one or more reactors or reactor vessels, heaters, exchangers, pipes, pumps, compressors, and controllers. Additionally, an equipment item, such as a reactor, dryer, or vessel, can fu...

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Abstract

Embodiments of methods and apparatuses for processing a renewable feedstock are provided herein. In one example, a method comprises dividing a H2-rich make-up stream into a first H2-rich portion and a second H2-rich portion. The second H2-rich portion has a lower mass flow rate than the first H2-rich portion. The renewable feedstock is deoxygenated in the presence of the first H2-rich portion at hydroprocessing conditions effective to form a deoxygenating reaction zone effluent that contains normal paraffins. At least a portion of the deoxygenating reaction zone effluent is isomerized in the presence of the second H2-rich portion at isomerization conditions effective to form an isomerization reaction zone effluent that contains branched paraffin. The isomerization conditions include a first hydrogen partial pressure of about 4,140 kPa gauge or less.

Description

TECHNICAL FIELD[0001]The technical field relates generally to methods and apparatuses for processing renewable feedstocks, and more particularly relates to methods and apparatuses that deoxygenate renewable feedstocks to form normal paraffins and that isomerize normal paraffins at relatively low hydrogen partial pressure to form branched paraffins for fuel products.BACKGROUND[0002]As the demand for diesel and jet boiling range fuels increase worldwide, there is increasing interest in feedstock sources other than petroleum crude oil. One such source is what has been termed “renewable feedstocks.” Renewable feedstocks are biological feedstocks that include, but are not limited to, plant oils such as corn, jatropha, camelina, rapeseed, canola, and soybean oil; algal oils; and animal fats such as tallow and fish oils. The common feature of these sources is that they are composed of glycerides and free fatty acids (FFA). Both of these classes of compounds contain n-aliphatic hydrocarbon ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10G3/00
CPCC10G3/52C10G3/50C10G45/58Y02P30/20
Inventor LUEBKE, CHARLES P.ELLIG, DANIELFICHTL, GEOFFREY WILLIAM
Owner UOP LLC
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