4results about How to "High purity hydrogen" patented technology

This invention discloses a process for in-situ decarbonization of oily sludge using autocatalytic gasification of sintering circulating flue gas to produce hydrogen-rich gas, which is then reinjected into the sintering machine. The core innovation of this process lies in the fact that it eliminates the need for additional catalysts and carbon-fixing agents. It directly utilizes the metal oxides contained in the ash of the oily sludge as an autocatalyst and the calcium-based components as a carbon-fixing agent. Using sintering circulating flue gas as the gasification medium, under reaction conditions of 500-900℃, the autocatalytic gasification of the oily sludge and in-situ carbonization of CO2 are simultaneously achieved, thereby producing high-purity hydrogen-rich gas. This hydrogen-rich gas is then reinjected into the sintering machine, replacing fossil fuels in sintering production. Simultaneously, the iron- and calcium-rich residue generated after the reaction is recycled back into the ore and used as sintering raw material in the sintering process, realizing the resource recovery of valuable elements. This invention effectively achieves waste resource utilization, process decarbonization, and energy cascade utilization, significantly reducing the total carbon emissions and production operating costs of the sintering process.

The application provides a gas-liquid separation and purification system and method based on a liquid organic dehydrogenation process, which separates methylcyclohexane dehydrogenation products into gaseous dehydrogenation products and liquid dehydrogenation products through a first gas-liquid separator; an absorption tower receives the gaseous dehydrogenation products and removes organic components in the gaseous dehydrogenation products by means of an absorbent to obtain crude hydrogen; a molecular sieve filter receives the crude hydrogen, and high-purity hydrogen is obtained after filtration and purification; a solvent regenerator performs resolution and regeneration treatment on the liquid phase mixed components discharged from the absorption tower, so that the absorbent in the liquid phase mixed components is enriched at the bottom of the tower, the organic components are enriched at the top of the tower, the absorbent enriched at the bottom of the tower is returned to the absorption tower, and the regeneration and reuse of the absorbent are completed. The combination of the absorption tower and the regenerator can solve the separation problem of hydrogen and aromatic organic matter, reduce the load of the purification section, effectively prolong the service life of the material in the absorption section, and realize deep purification of hydrogen and efficient recovery of organic matter.

The present application belongs to the technical field of extraction and utilization of high-value components in industrial tail gas, and discloses a device and method for extracting hydrogen from industrial tail gas. The device comprises a heat exchanger, a high-temperature-resistant ceramic cylinder, a direct-current power supply and a cooler. Water vapor is used as a carrier gas to carry out the prepared hydrogen, which can reduce the electrolysis voltage and the power consumption for extracting hydrogen. The method of applying an external voltage is used to provide the driving force for hydrogen extraction, which can extract hydrogen from tail gas with low hydrogen concentration and improve the utilization rate of hydrogen resources. The device and method for extracting hydrogen from low-hydrogen-content high-temperature industrial tail gas are provided to solve the problem that hydrogen cannot be directly extracted from high-temperature industrial tail gas with low hydrogen concentration, resulting in a large amount of hydrogen resource waste. The device and method can directly extract hydrogen from high-temperature industrial tail gas with low hydrogen content by using high-temperature proton conductor ceramics, and water vapor is used as a carrier gas to carry the extracted hydrogen, which can reduce the power consumption for extracting hydrogen and efficiently prepare high-purity hydrogen.

The application discloses a hydrogen deep purification method with wide load and high recovery rate, which comprises the following steps: crude hydrogen containing oxygen, water and carbon dioxide is introduced into a deoxidation reactor filled with a catalyst to perform a catalytic deoxidation reaction, so that oxygen reacts with hydrogen to generate water, and high-temperature wet hydrogen is obtained; wherein the deoxidation reactor is filled with at least a low-temperature activation catalyst and a medium-high-temperature main catalyst; the high-temperature wet hydrogen is cooled, and liquid water generated by condensation is separated, so that saturated micro-wet hydrogen rich in carbon dioxide is obtained; and the saturated micro-wet hydrogen is introduced into an adsorption system to perform deep dehydration and decarburization on the saturated micro-wet hydrogen, so that high-purity product hydrogen is obtained. The embodiment of the application can maintain stable high-purification effect in a wide load range, and meets application requirements.