Pyrogasification Biogas Conversion Using Liquid Digestate Buffering

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Solution Overview

Problem

Current methods for transforming pyrogasification gas into biogas face challenges such as high investment and operating costs, reliability issues, and the need for costly purification processes, as well as environmental concerns due to the presence of toxic substances and variable gas composition, which complicates the biological transformation process.

Innovation Solution

A device comprising a liquid digestate production unit and a functional unit with cooling, washing, methanation, and biomethanation functions, utilizing liquid digestate to dilute and separate pyrogasification gas by-products, allowing for efficient biological transformation of pyrogasification gas into biogas, reducing toxic concentrations and promoting bacterial adaptation and efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If pyrogasification gas is directly subjected to biological transformation, then the process is simple, but the presence of toxic substances and variable composition inhibits bacterial activity and reduces reliability

Engineering Contradiction:

Improveprocess simplicityVSAvoidbacterial activity stability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent applies preliminary action by implementing a cooling step before the biological transformation process. The pyrogasification gas is cooled to reduce the concentration of toxic substances and stabilize its composition before introduction to the biological transformation unit, thereby protecting bacterial activity without requiring complex purification systems

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent uses an intermediary approach by introducing a buffering substance into the biological transformation unit. This intermediary substance absorbs toxic components from the pyrogasification gas, protecting the bacterial flora while maintaining process simplicity and avoiding complex purification equipment

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If costly purification processes are implemented to remove toxic substances, then bacterial activity is protected, but investment and operating costs increase

Engineering Contradiction:

Improvebacterial activity protectionVSAvoidinvestment and operating costs

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent employs a cost-effective approach by using readily available, inexpensive buffering substances such as calcium hydroxide or sodium hydroxide solutions to neutralize toxic components. These inexpensive reagents protect bacterial activity without requiring investment in complex, expensive purification equipment

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent applies parameter changes by adjusting the pH of the pyrogasification gas through buffering substances. This simple parameter adjustment neutralizes toxic acidic components, protecting bacterial activity while avoiding costly physical or chemical purification processes

Inventive Principle:

Principle #35Parameter changes

3Adaptability or versatility

If variable gas composition is accepted, then the process is flexible, but the biological transformation efficiency decreases

Engineering Contradiction:

Improveprocess flexibilityVSAvoidbiological transformation efficiency

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent implements feedback control by monitoring the composition of pyrogasification gas and adjusting the buffering capacity accordingly. This allows the system to maintain optimal pH levels and transformation efficiency despite variations in gas composition, while preserving process flexibility to handle different biomass types

Inventive Principle:

Principle #23Feedback

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

The solution enables reliable and cost-effective transformation of pyrogasification gas into biogas, improving bacterial flora resilience and efficiency, facilitating easier use and recovery of biogas for energy production while minimizing environmental impact.

Implementation Method 1

washing function L of the pyrogasification gas (11)

Methodology Applied

Scientific EffectWashing:

Implementation Method 2

biological transformation of pyrogasification gas, resulting from a pyrogasification process, into biogas

Methodology Applied

Scientific EffectBiological transformation: Anaerobic Digestion

Implementation Method 3

cooling function R of the pyrogasification gas (11)

Methodology Applied

Scientific EffectCooling: Cooling

Data Source

PatentEP3430152B1Device for the biological transformation of pyrogasification gas into biogas

Publication Date: 2022.02.02 YANNCO

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AI summary

The present invention relates to a device (1) for biologically transforming pyrogasification gas (11) from a pyrogasification process into biogas (16, 23) mainly composed of methane and carbon dioxide. The invention also relates to a method for biologically transforming pyrogasification gas (11) from a pyrogasification device (9) into biogas (16, 23).