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Process for producing diesel fuel and jet fuel from biorenewable feedstocks

a biorenewable feedstock and jet fuel technology, applied in biofeedstock, hydrocarbon oil treatment, hydrocarbon distillation, etc., can solve the problems of reducing consuming excessive amounts of hydrogen, and affecting the appeal of renewable fuel, so as to reduce the consumption of hydrogen. , the effect of reducing the consumption of hydrogen

Inactive Publication Date: 2018-08-02
HONG JIANHUI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes a process for making diesel fuel and jet fuel from a renewable source. The process involves using a steam fuel reformer to create a hydrogen-rich mixture, which is then treated in a catalytic reaction to convert the feedstock to a hydrocarbon fraction and a gaseous fraction. The process can also produce sulfur-containing components, which can form hydrogen sulfide. By using a hydrolysis process to produce a glycerol stream, the consumption of hydrogen is significantly reduced. Overall, this process can create efficient and reliable sources of fossil fuels from renewable sources.

Problems solved by technology

The processes in these two patents have several major shortcomings: first they relied on the use of purified hydrogen, which are expensive and energy consuming to produce; second, these processes used excessive amount of hydrogen, partly due to converting the glycerol component in the triglycerides into propane; third, the hydrogen used in these processes are often derived from natural gas, which could be a fossil fuel and a non-renewable source.
The use of a large amount of fossil fuel in the production process of a renewable fuel undermines the appeal of the renewable fuel.
The purification of hydrogen by removal of carbon oxides is itself an expensive and energy intensive process.

Method used

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  • Process for producing diesel fuel and jet fuel from biorenewable feedstocks
  • Process for producing diesel fuel and jet fuel from biorenewable feedstocks
  • Process for producing diesel fuel and jet fuel from biorenewable feedstocks

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Embodiment Construction

[0013]As stated, the present invention relates to a process for producing a hydrocarbon stream useful as diesel boiling range fuel or jet fuel from renewable feedstocks such as renewable feedstocks originating from plants or animals. Some of these feedstocks are known as biorenewable fats and oils. The term renewable feedstock is meant to include feedstocks other than those obtained from crude oil. The renewable feedstocks that can be used in the present invention include any of those which comprise glycerides and / or free fatty acids (FFA). Most of the glycerides will be triglycerides, but monoglycerides and diglycerides may be present and processed as well. Examples of these renewable feedstocks include, but are not limited to, canola oil, corn oil, soy oils, rapeseed oil, soybean oil, colza oil, tall oil, sunflower oil, hempseed oil, olive oil, linseed oil, coconut oil, castor oil, peanut oil, palm oil, mustard oil, jatropha oil, tallow, yellow and brown greases, lard, train oil, ...

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Abstract

A process has been developed for producing diesel fuel or jet fuel from renewable feedstocks such as fats and oils from plants and animals. The process involves producing a hydrogen-rich mixture in a reformer, hydrolyzing a renewable feedstock to produce a free fatty acid stream and a glycerol-containing stream, catalytically treating the free fatty acid stream by hydrogenating and deoxygenating to provide a hydrocarbon fraction useful as a diesel fuel or jet fuel. A selective separation such as a hot high pressure hydrogen stripper may be used to remove at least the carbon oxides from the reaction zone effluent and provide a liquid recycle stream at pressure and temperature. A vapor stream is separated from the effluent and at least carbon dioxide is removed using at least one amine absorber. The resulting hydrogen-rich stream is recycled to the reaction zone.

Description

FIELD OF THE INVENTION[0001]This invention relates to a process for producing diesel boiling range fuel and jet fuel from renewable feedstocks such as the triglycerides and free fatty acids found in materials such as plant oils, fish oils, animal fats, and greases. Hydrogenation and deoxygenation are performed in one or more reactors without use of expensive purified hydrogen. One or more sulfur compounds may be present in the reaction mixture. A vapor stream is separated from the reaction zone effluent, and carbon dioxide is separated from the vapor stream. Optionally, a sulfur-containing stream may also be separated.BACKGROUND OF THE INVENTION[0002]As the demand for diesel boiling range fuel and jet fuel increases worldwide there is increasing interest in sources other than crude oil for producing diesel boiling range fuel and jet fuel. One such renewable source is what has been termed biorenewable sources. These renewable sources include, but are not limited to, plant oils such a...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10G3/00C10G57/00C10G7/00
CPCC10G3/50C10G3/42C10G2300/202C10G7/00C10G2300/1011C10G57/00Y02P30/20
Inventor HONG, JIANHUI
Owner HONG JIANHUI
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