Market Context — Why This Technology, Why Now

The urgent need for sustainable energy solutions is driving massive investments in clean hydrogen infrastructure worldwide. Regulatory incentives for carbon capture and utilization, coupled with competitive pressures to reduce operational expenditures, are pushing hydrogen producers to adopt advanced efficiency technologies. This patent offers a critical pathway to meet these demands by optimizing a key process step, enabling higher output and lower carbon footprint in a rapidly expanding global market.

Key Competitive Advantages
01

Reduces purge time by ~80% compared to conventional methods, efficiently removing hydrocarbons and boosting overall operational efficiency.

02

Cuts operational costs by reusing CO2-rich exhaust gas from the steam reformer burner as purge gas, eliminating the need for separate purge gas supply and reducing environmental impact.

03

Maximizes equipment utilization and production capacity by accelerating the adsorbent regeneration cycle, enhancing overall hydrogen production across desulfurization and steam reforming stages.

Market Opportunity
Hydrogen Production Plants
$650B–$700B globally (AI est.)
Driven by national policy support and technological advancements towards a decarbonized society, clean hydrogen production capacity is rapidly expanding, leading to active investment in efficiency-enhancing technologies.
Large-scale industrial gas producers Energy companies investing in hydrogen infrastructure EPC firms for hydrogen plants
Petrochemical Plants
$9.5B–$10.5B domestically (AI est.)
In petrochemical processes, adsorbents are used not only for hydrogen production but also in various gas separation and purification steps. Improving their regeneration efficiency directly translates to cost reductions.
Major petrochemical manufacturers Specialty chemical producers Industrial gas separation equipment suppliers
Industrial Gas Manufacturing
$1.5B–$2.5B domestically (AI est.)
In high-purity gas manufacturing, impurity removal by adsorption is essential. This technology contributes to reducing gas production costs and improving supply stability.
Leading industrial gas suppliers Manufacturers of air separation units Semiconductor material suppliers requiring ultra-high purity gases
IP Defensibility — Why Competitors Can't Replicate This
What This Patent Covers

This patent establishes a robust scope of protection for a purging method and system within hydrogen production processes, encompassing six claims. Its patentability was affirmed after overcoming an examiner's rejection citing eight prior art documents, indicating strong stability and resistance to invalidation. The involvement of a prominent patent firm further underscores the meticulous drafting and defensive strength of these claims.

Competitive White Space

This patent specifically covers CO2-based purging of adsorbents in hydrogen production. White space exists in developing novel adsorbent materials, optimizing purging for different gas compositions beyond hydrocarbons, or integrating advanced AI-driven process controls for predictive maintenance.

Economic Impact
~$150K/year estimated operational cost reduction per facility (est.)
estimated ROI · USD · AI analysis
ROI Calculation Logic

For a medium-scale hydrogen production plant, assuming conventional purge gas (e.g., high-purity nitrogen) purchase and exhaust gas treatment costs are approximately ~$200K/year (AI est.), this technology's burner exhaust gas reuse could achieve an ~80% reduction. Calculation: ~$200K/year operational cost × 80% reduction = ~$150K/year savings (AI est.). Additionally, improved equipment utilization from shorter purge times could add ~$5K/year in profit (AI est.), resulting in over ~$155K/year in total economic benefits (AI est.).

Speed to Market
6× faster than in-house development
This technology is a purging method and system designed for integration into existing hydrogen production processes. Its fundamental operating principles and components are thoroughly disclosed in the patent specification. The core technology, utilizing CO2-containing gas, is already established, significantly reducing the time and effort a licensee would spend on R&D for a similar solution from scratch. Specifically, the approximately 3 years required for in-house development, including basic research, proof-of-concept, system design, and testing, could be reduced to about six months for compatibility assessment and system integration when adopting this technology.
Competitive Positioning

X: Operational Cost Efficiency
Y: Environmental Impact Reduction

Business Models & Applications
🤝 Technology Licensing
Grant licenses for this purging technology to hydrogen production plant construction and operating companies. Revenue streams would include initial implementation fees and running royalties.
⚙️ System Integration
Provide consulting and technical support services for integrating this technology into existing hydrogen production facilities or applying it to new plant designs.
🔬 Joint Research & Development
Aim to optimize the purging system for specific applications and scales through joint research with key hydrogen-related companies, fostering further technological advancement and adoption.
Adjacent Application Opportunities
🏭 化学プラント
Optimizing Gas Purification & Separation Processes
The principles of this technology could be applied to regenerate adsorbents used in gas separation and purification processes across various chemical plants. For instance, applying it to adsorbent purging in natural gas refining or CO2 capture processes could reduce operational costs by an estimated 15-20% and enhance overall efficiency.
♻️ 廃棄物処理・バイオガス精製
Impurity Removal in Biogas & Waste Gas
Biogas and waste gases contain numerous impurities beyond methane, posing challenges for adsorbent regeneration. Applying this technology could enable efficient purging and reduce regeneration times for impurity adsorbents by up to 30%, enhancing the economic viability of biogas power generation and fuel conversion processes.
🧪 触媒再生
Application to Various Catalyst Regeneration Processes
Beyond adsorbents, similar purging principles could be applied to regenerate catalysts contaminated during reaction processes. Developing this as a technology to efficiently remove specific contaminants with CO2 gas could extend catalyst lifespan by 20-25% and reduce replacement frequency, offering significant operational savings.
Integration Roadmap — Estimated 22-Month Deployment
Phase 1: Concept Validation & Design
Duration: 4 months
Evaluate applicability to existing hydrogen production processes, analyze CO2 exhaust gas composition, and conduct basic design studies for the purge system.
Phase 2: Prototype Development & Demonstration
Duration: 9 months
Construct a pilot-scale purge system, evaluate performance in a real-world environment, and collect data for optimization.
Phase 3: Full-Scale Implementation & Optimization
Duration: 9 months
Implement the system in a full-scale plant, validate long-term stable operation, and continuously improve and optimize performance based on operational data.
Technical Feasibility
This technology is specialized for the adsorbent purging step in hydrogen production processes, utilizing CO2-containing exhaust gas from the steam reforming stage. The patent claims clearly describe a purging method using CO2-containing gas, suggesting high potential for integration with minimal modifications, primarily connecting existing burner exhaust gas lines to adsorbent purging systems. This indicates high technical feasibility for seamless integration into existing process flows without requiring significant new capital investment.
Success Scenario
Implementing this technology could significantly shorten the adsorbent purging cycle in hydrogen production plants, potentially increasing annual operating time by approximately 10%. This could expand annual production volume by up to 1.1 times without additional capital investment. Furthermore, reusing CO2 as purge gas is estimated to reduce external high-purity gas procurement costs by approximately ~$150K/year (AI est.), enhancing licensee profitability and significantly contributing to environmental impact reduction.
Patent Record
APPLICATION NO.
特願2021-207775
REGISTRATION NO.
7122042
FILING DATE
2021/12/22
GRANT DATE
2022/08/10
EXPIRATION DATE
2041/12/22
PATENT HOLDER
独立行政法人エネルギー・金属鉱物資源機構
Examination History
2022年02月16日
出願審査請求書
2022年02月16日
早期審査に関する事情説明書
2022年03月23日
早期審査に関する通知書
2022年03月29日
拒絶理由通知書
2022年05月10日
手続補正書（自発・内容）
2022年05月10日
意見書
2022年07月27日
特許査定