PATENT CLAIM ANALYSIS

Application Number: 16235301
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-05
Patent Classification: ["423", "648100"]

Abstract:
A hydrogen production apparatus including a desulfurizer, a reformer, a CO transformer a gas flow path, and a purge gas supply path which is provided where a purge gas is supplied to an upstream side of a pressure feeding apparatus in the gas flow path, prior to a stopping operation, a purging step of replacing gas within the gas flow path with the purge gas and filling the purge gas into the gas flow path is performed, and in a start-up operation in which a heating means is operated to increase the temperature of the gas within the gas flow path, which is performed prior to a hydrogen purification operation, a pressure increasing step of supplying the purge gas from the purge gas supply path to the closed circulation circuit and increasing the pressure within the closed circulation circuit is performed.

Claim (Index 1):
A hydrogen production apparatus comprising a desulfurizer that desulfurizes a source gas, a reformer that heats the desulfurized source gas in a state mixed with steam with a heating means and obtains a reformed gas, a CO transformer that causes carbon monoxide in the reformed gas to react with steam, and a hydrogen purification unit that separates impurities other than hydrogen from transformed gas after processing by the CO transformer to purify hydrogen gas, further comprising:\n a gas flow path that allows gas to flow to the desulfurizer, the reformer, the CO transformer, and the hydrogen purification unit, and a pressure feeding apparatus being provided that causes gas to flow in the gas flow path, and a control apparatus that performs, in order, a hydrogen purification operation for driving the heating means and the pressure feeding apparatus to supply the source gas to the gas flow path, and a stopping operation for stopping the heating means and the pressure feeding apparatus, wherein a closed circulation circuit that returns and circulates gas by the pressure feeding apparatus in order of the desulfurizer, the reformer, and then the CO transformer while bypassing the hydrogen purification unit, is provided in the gas flow path, and a purge gas supply path is provided where a purge gas is supplied to an upstream side of the pressure feeding apparatus in the gas flow path, wherein the control apparatus, prior to the stopping operation, is configured to perform purging step of replacing the gas within the gas flow path with the purge gas, and filling the purge gas into the gas flow path, and wherein the control apparatus, in a start-up operation in which the heating means is operated to increase the temperature of the gas within the gas flow path, which is performed prior to the hydrogen purification operation, is configured to perform a pressure increasing step of supplying the purge gas from the purge gas supply path to the closed circulation circuit, and increasing the pressure within the closed circulation circuit.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 98.0
- Lexical Diversity: 2.67857
- Patent Class: 423.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15541398', '13497730', '10481925', '14583149', '12800988']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7547841739462643
- 35 USC 102 Novelty (BERT): 0.5329630948074306
- Combined Prediction Score: 0.7326020660323809
- Mean Citation Score: 224.26861
- Max Citation Score: 368.5884
- Similarity Product: 358.25830317821504

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test