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Catalytic pyrolysis of biomass in an auger reactor

a technology of biomass and auger reactor, which is applied in the petroleum industry, coke ovens, liquid hydrocarbon mixture production, etc., can solve the problems of thermal instability and acidity of bio-oil, and achieve the effects of reducing overall costs, increasing throughput, and reducing costs

Inactive Publication Date: 2013-12-12
PHILLIPS 66 CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a process for converting biomass to biofuels using a thermal reactor with an auger and a catalyst. The feedstock is heated by the auger and the catalyst increases the conversion rate of the feedstock. The atmosphere inside the reactor can be an inert gas or a reactive gas like hydrogen or steam. The process provides a faster and more efficient way to produce biofuels.

Problems solved by technology

Bio-oil typically is thermally unstable, acidic, and not miscible with petroleum feedstocks.

Method used

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  • Catalytic pyrolysis of biomass in an auger reactor
  • Catalytic pyrolysis of biomass in an auger reactor

Examples

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example 1

[0036]Either micro-algal or lignin biomass was dried at 70° C. for 12 hours, then pyrolyzed with and without zeolite catalyst in inert (He) atmosphere. Pyrolysis was conducted at 475° C. pyrolysis temperature, heating rate ˜10,000° C. / s and a 5:1 catalyst ratio (when used). Vapors were analyzed by gas chromatography / mass spectrometry (GC / MS). Char was measured by gravimetric difference. All yields are on a mass basis.

[0037]The data (see Tables 1 and 2) show a greater than 60% yield of condensable vapors from both micro-algal (Table 1) and lignin (Table 2) biomass in un-catalyzed pyrolysis and 50% or greater yield during catalyzed pyrolysis. Adding a zeolite catalyst improved yield of hydrocarbons in the vapor phase, while also increasing char yield.

TABLE IYield of pyrolysis products from dried, whole microalgae.Yield %,Yield %,Productno catalystzeolite catalystNoncondensable gas*617Char*1928Condensable vapors*7455Hydrocarbons in vapor**944*Yield based on total biomass**Yield based o...

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Abstract

The present invention relates generally to the thermal conversion of biomass. Processes are disclosed for converting algal biomass to condensable vapor intermediates such as pyrolysis oil by means of pyrolysis in a reactor comprising at least one auger. The intermediates may be further processed for production of renewable hydrocarbon fuels. The disclosed processes assist in preventing premature devolatization of algal biomass during pyrolysis, thereby increasing efficiency and commercial feasibility.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a non-provisional application which claims benefit under 35 USC §119(e) to U.S. Provisional Application Ser. No. 61 / 658,512 filed Jun. 12, 2012, entitled CATALYTIC PYROLYSIS OF BIOMASS IN AN AUGER REACTOR, which is incorporated herein in its entirety.STATEMENT OF FEDERALLY SPONSORED RESEARCH[0002]None.FIELD OF THE DISCLOSURE[0003]The present invention relates generally to pyrolytic conversion of biomass in the presence of a catalyst and a heat carrier in a reactor comprising at least one auger.BACKGROUND[0004]The Renewable Fuels Standards (RFS) enacted by the US Government mandate the increased use of renewable energy sources to reduce emissions of carbon based fuels and provide alternatives to petroleum based energy and feedstock.[0005]One of the alternatives being explored is the use of biomass. Biomass is any carbon containing material derived from living, or recently-living, organisms. The ability to convert biomas...

Claims

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Application Information

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IPC IPC(8): C10G1/02
CPCC10G1/02C10G1/08
Inventor DAUGAARD, DAREN E.JONES, SAMUEL T.PLATON, ALEXANDRUGONG, KENINGLOTERO, EDGAR
Owner PHILLIPS 66 CO
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