Overview
Filed on October 31, 2022 and granted on September 17, 2024, this patent describes a hydrogen-driven closed-loop power cycle that converts the heat from near‑stoichiometric H2/O2 combustion into mechanical work via steam‑injected turbines. Inventors based in Canyon, TX, and an applicant based in San Antonio, TX developed a system architecture that pairs a combustion re‑heater with a multi‑temperature heat recovery steam generator and steam‑water mixer to produce controllable generated steam while using cooling steam or pressurized water to protect the combustion chamber. The claim scope emphasizes system‑level integration—including phase management for hydrogen and oxygen, multi‑stage steam injection and reheating, and flexible feedwater/steam routing—to improve cycle efficiency and operational flexibility without relying on conventional air compressors.
The prosecution underscores thoughtful claim drafting that distinguishes from prior art by eliminating compressor stages and by capturing multi‑temperature steam recovery and mixer subsystems that support safe, high‑temperature combustion and turbine compatibility.
Key Features
- Closed‑loop H2/O2 combustion producing high‑temperature generated steam for steam‑injected turbines
- Multi‑temperature heat recovery steam generator and steam‑water mixer for optimized cooling and reheating
- Hydrogen/oxygen phase management and impurity tolerance for practical deployment
- Configurable multi‑stage turbines with reheating and bypass options
This patent positions the technology as a low‑emission, scalable power option for utilities, locomotives, and industrial CHP applications and highlights the firm’s technical drafting strength in energy conversion innovations.
Granted: 2024-09-17
