Portable Sulfur Trioxide Generation for Methane Hydrate Extraction
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Solution Overview
Problem
The transportation and handling of sulfur trioxide are challenging due to its tendency to form high-melting crystals, safety concerns with moisture, and the high costs associated with extracting methane hydrates, which are vast reservoirs of natural gas but require cost-prohibitive technologies for production.
Innovation Solution
A portable and transportable apparatus for on-demand generation of sulfur trioxide at the well site, using portable sources of sulfur and oxygen, a converter with a catalyst, and a heater to maintain sulfur trioxide in a liquid state, avoiding transportation and safety issues, and enabling efficient extraction of hydrocarbons from clathrate hydrates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If sulfur trioxide is transported as solid or liquid, then it can be delivered to well site, but it forms high melting crystals below 90°F and requires high temperatures and extended periods to liquefy
Solution Approach 1:
The system performs preliminary heating of sulfur trioxide above its melting point (90°F) before transportation, maintaining it in liquid state. Heating elements and insulation are pre-installed on transportation vessels to prevent crystallization during transit, eliminating the need for time-consuming on-site liquefaction.
Solution Approach 2:
The physical state of sulfur trioxide is changed from solid to liquid by controlling temperature parameters. The system maintains temperature above 90°F throughout transportation and storage, preventing crystal formation. This parameter control is achieved through heated transportation vessels and controlled delivery systems.
2Ease of operation
If sulfur trioxide is transported, then it can be used at well site, but safety and environmental concerns arise from contact with moisture creating thermal reaction and sulfuric acid
Solution Approach 1:
The system uses an intermediary sealed transportation vessel that isolates sulfur trioxide from moisture in the environment. The vessel includes seals, gaskets, and protective coatings that prevent contact between sulfur trioxide and atmospheric moisture, eliminating the harmful thermal reaction and sulfuric acid formation during transit.
Solution Approach 2:
The transportation and delivery system creates an inert environment by excluding moisture through sealed containers and controlled atmospheres. Nitrogen or other inert gases may be used to displace moist air inside transportation vessels, preventing unwanted chemical reactions while maintaining sulfur trioxide in transportable form.
3Productivity
If conventional technologies are used to extract methane hydrates, then hydrocarbons can be produced, but the costs are prohibitive
Solution Approach 1:
The system uses locally available materials at the well site (sulfur and oxygen) to generate sulfur trioxide on-demand through a portable converter, eliminating the need to transport expensive sulfur trioxide or use complex conventional extraction equipment. The process serves itself by using readily available resources to produce the necessary chemical in situ.
Solution Approach 2:
The system changes the approach from using expensive conventional extraction technologies to a chemical reaction-based method using sulfur and oxygen. By controlling temperature and pressure parameters in the portable converter, the system generates sulfur trioxide that reacts with methane hydrates at lower costs than conventional thermal or pressure-based extraction methods.
4Reliability
If sulfur trioxide is generated on-demand at well site, then transportation and safety issues are avoided, but additional equipment and process complexity are required
Solution Approach 1:
The sulfur trioxide generation system is segmented into portable, modular components: a portable converter, sulfur storage container, oxygen supply, and control systems. Each component can be independently transported and assembled at the well site, reducing the need for complex integrated equipment while maintaining safety through distributed functionality.
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 system allows for safe, efficient, and cost-effective generation and delivery of sulfur trioxide, reducing hydrocarbon contaminant buildup and enabling the extraction of hydrocarbons from clathrate hydrates without the need for transporting sulfur trioxide, thus addressing safety and cost concerns.
Implementation Method 1
a converter having an inlet fluidly or gaseously coupled to the portable sources of sulfur and oxygen, a cavity communicating with the inlet and containing a catalyst capable of catalyzing a reaction of sulfur and oxygen to generate sulfur trioxide
Implementation Method 2
a heater operable to heat sulfur or oxygen dispensed from the portable sources to a temperature sufficient for generating sulfur trioxide
Implementation Method 3
delivering the sulfur trioxide to the deposit where the sulfur trioxide reacts with the clathrate hydrate to produce a hydrocarbon
Data Source
AI summary
Portable/transportable apparatuses, methods, and systems for generating and delivering sulfur trioxide on-site or near an item to be treated is provided. A method for extracting hydrocarbons from deposits containing a clathrate hydrate such as methane hydrates includes a step of delivering sulfur trioxide to an ice deposit containing a clathrate hydrate and subsequently extracting linear or branched hydrocarbons.