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Improved catalytic fast pyrolysis process

A pyrolysis, fast technology, applied in molecular sieve catalysts, purification/separation of hydrocarbons, physical/chemical process catalysts, etc.

Inactive Publication Date: 2017-09-26
ANELLOTECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in addition to substantial efforts, there are many challenges that must be overcome to efficiently produce chemicals or fuels from biomass

Method used

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  • Improved catalytic fast pyrolysis process
  • Improved catalytic fast pyrolysis process
  • Improved catalytic fast pyrolysis process

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Experimental program
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Effect test

Embodiment

[0047] With the understanding that the CFP BTX product may not be in equilibrium, a computational approach was used to develop a conservative estimate of toluene conversion in the fluidized bed of the CFP process. A representative BTX composition for the CFP process was mathematically converted to a chemical equilibrium composition at 525°C using standard equilibrium calculation methods. Additional toluene was then added to this composition and the chemical equilibrium of the new system was calculated. In the new equilibrium system, incremental toluene is converted to additional benzene and mixed xylenes. These calculations were performed at two toluene additions of 30% recycle and 50% recycle representing the baseline toluene amount. At 30% recycle, the corresponding toluene conversion was 14% of the toluene fed; at 50% recycle, the conversion was 22% of the toluene fed. The molar selectivity was 50 / 50 benzene / xylene in both cases.

[0048] The results are shown below in T...

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PUM

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Abstract

The present invention provides an improved catalytic fast pyrolysis process comprising steps of: a) feeding biomass, a specific catalyst composition and transport fluid to a catalytic fast pyrolysis process fluidized bed reactor maintained at reaction conditions to manufacture a raw fluid product stream, b) feeding the raw fluid product stream of step a) to a catalyst separation and stripping system to produce separated catalyst and a fluid product stream, c) feeding the fluid product stream of step b) to a vapor / liquid separation system to produce a liquid phase stream and a vapor phase stream comprising benzene, toluene and xylenes, d) feeding the vapor phase stream of step c) to a product recovery system to recover benzene, toluene and xylenes, and e) recycling at least a portion of the recovered toluene of step d) to the fluidized bed reactor of step a).

Description

field of invention [0001] The present invention relates to an improved catalytic fast pyrolysis process. In particular, it relates to an improved catalytic fast pyrolysis process for the production of benzene and xylenes. Background of the invention [0002] Demand for tourism and consumer goods is driving the ever-increasing consumption of fossil fuels such as coal and oil, often obtained from deep underground. Extracting fossil fuels through mining and drilling often comes with environmental and political costs. Furthermore, as more and more available fossil fuel resources are being depleted; this has led to the search for more expensive extraction techniques such as fracking and deep sea drilling. Furthermore, the consumption of fossil fuels results in higher levels of atmospheric carbon, usually in the form of carbon monoxide. [0003] To reduce these problems, considerable efforts have been made to convert biomass into fuels and other useful chemicals. Unlike fossil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/00B01J29/40C07C15/00C07B61/00C07C7/00
CPCB01J29/40C10B49/22C10B53/02C10B57/06C10G1/002C10G1/08C10G1/086C10G2400/30Y02E50/10Y02P20/145
Inventor C·索伦森
Owner ANELLOTECH INC