Biohydrocarbon Production via Isomerization and Thermal Cracking

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Current methods for producing biohydrocarbons struggle to replicate the properties of traditional fossil-based polymers, limiting their large-scale applications due to unique product properties and processing challenges, and existing biohydrocarbon production methods often result in unpredictable product distributions.

Innovation Solution

A method involving the preparation of hydrocarbon raw materials from renewable feedstocks, followed by isomerization to increase iso-paraffin content, and thermal cracking at specific temperatures to produce biohydrocarbons with high BTX yields, suitable for polymer chemistry applications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If biohydrocarbons are produced from biomass using conventional methods, then sustainable alternative to fossil-based polymers is achieved, but product properties are unpredictable and difficult to control

Engineering Contradiction:
Improvesustainable alternative capabilityVSAvoidproduct property control
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent applies parameter changes by precisely controlling the thermal cracking temperature (790-960°C) and conducting isomerization treatment to achieve specific iso-paraffin content (at least 50 wt.-%). These parameter adjustments enable predictable product distribution with high BTX yields while maintaining sustainability from biomass feedstock.

Inventive Principle:
Principle #35Parameter changes

2Device complexity

If biohydrocarbons are produced without isomerization step, then process complexity is reduced, but product distribution becomes unpredictable and unsuitable for polymer applications

Engineering Contradiction:
Improveprocess stepsVSAvoidproduct distribution control
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The patent applies preliminary action by performing isomerization treatment on the bio-renewable feedstock before the thermal cracking step. This pre-treatment converts straight-chain hydrocarbons into iso-paraffins, ensuring that the subsequent cracking produces predictable high BTX yields suitable for polymer chemistry applications.

Inventive Principle:
Principle #10Preliminary action

3Use of energy by moving object

If thermal cracking is conducted at lower temperatures, then energy consumption is reduced, but BTX yield and product quality decrease

Engineering Contradiction:
Improveenergy consumptionVSAvoidBTX yield
Core Design Contradiction:
Use of energy by moving objectVSProductivity

Solution Approach 1:

The patent optimizes the thermal cracking temperature parameter to the specific range of 790-960°C, which balances energy consumption with high BTX yield. This temperature range is sufficiently high to achieve excellent cracking efficiency and product quality, yet controlled to avoid excessive energy waste.

Inventive Principle:
Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This method effectively converts renewable feedstocks into high-value biohydrocarbons with enhanced BTX content, suitable for polymer production, offering a sustainable alternative to traditional petrochemical raw materials with improved product distribution and integration into conventional petrochemical processes.

Implementation Method 1

an isomerization step of subjecting at least straight chain hydrocarbons in the hydrocarbon raw material to an isomerization treatment to prepare an isomeric raw material

Methodology Applied
Scientific EffectIsomerization:

Implementation Method 2

a cracking step of thermally cracking the isomeric raw material to produce biohydrocarbons

Methodology Applied
Scientific EffectThermal cracking: Pyrolysis

Data Source

PatentUS11124715B2Method for producing biohydrocarbons
Publication Date: 2021.09.21 NESTE OYJ
  • US11124715B2 patent drawing
  • US11124715B2 patent drawing
  • US11124715B2 patent drawing

AI summary

The present invention relates to a method of producing biohydrocarbons. Further, the invention relates to biohydrocarbons obtainable by the methods of the invention and to a method of producing polymers.