Wellhead Gas Conditioner for Engine Knock Reduction
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Solution Overview
Problem
Poor quality gas with high energy content and high percentages of heavy hydrocarbons causes engine inefficiencies and premature ignition, leading to knock and degradation in engine systems.
Innovation Solution
A device and method that condition gas by injecting an oxygen source, heating, oxidizing with a catalyst, and cooling to produce a gas with improved methane number and lower heating value, reducing knock and enhancing engine performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If poor quality gas with high energy content and high percentages of heavy hydrocarbons is used as fuel, then the gas has high Btu content, but the engine experiences knock, premature ignition, and degradation
Solution Approach 1:
The patent applies parameter changes by modifying the chemical composition parameters of the fuel gas through partial oxidation. By controlling the oxidation process with catalysts, the heavy hydrocarbon content is reduced while maintaining energy content, thereby changing the fuel properties to eliminate knock and premature ignition.
Solution Approach 2:
The patent uses catalysts as intermediaries to facilitate the partial oxidation of heavy hydrocarbons. The catalysts mediate the chemical reaction between the fuel gas and oxygen, enabling the transformation of harmful heavy hydrocarbons into lighter, more suitable fuel components without direct combustion.
2Quantity of substance
If poor quality gas is used in engine systems, then the gas has high Btu content, but the engine cannot run at rated load and becomes inefficient
Solution Approach 1:
The patent changes the compositional parameters of the gas through partial oxidation, reducing heavy hydrocarbon content while preserving energy content. This parameter modification enables the engine to operate at rated load with improved efficiency while maintaining high Btu content.
3Quantity of substance
If gas with high heavy hydrocarbon content is used, then the gas has high energy content, but knock occurs due to pre-ignition during compression
Solution Approach 1:
The patent applies parameter changes by modifying the hydrocarbon chain length distribution through partial oxidation. The process converts heavy hydrocarbons into lighter components, changing the fuel's combustion characteristics to prevent pre-ignition during compression while maintaining energy content.
Solution Approach 2:
Catalysts serve as intermediaries to control the partial oxidation process, selectively transforming heavy hydrocarbon molecules into lighter components. This mediated chemical transformation improves combustion stability by preventing pre-ignition while preserving the energy content of the fuel.
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 conditioning process results in a gas with higher methane number and lower heating value, improving engine efficiency and reducing knock, thereby extending engine life and increasing gas transportation capacity.
Implementation Method 1
heating the first portion of fuel with a heating component
Implementation Method 2
cooling the conditioned gas with a cooling component
Implementation Method 3
oxidizing the first portion of fuel in the conditioner unit comprising at least one catalyst to obtain a conditioned gas
Data Source
AI summary
The embodiments described herein are directed a device for conditioning gas comprising an inlet for receiving fuel. The device includes an injector for injecting an oxygen source into the fuel, a heating component for heating the fuel, a conditioner unit, and a cooling component. The device further comprises an outlet for feeding conditioned gas into an engine. The embodiments are also directed to a method for conditioning gas.