4results about How to "Increase hydrogen production" patented technology

The invention discloses a multi-electrolytic cell collaborative optimization control method suitable for wide-range power fluctuation, and belongs to the technical field of new energy. According to the method, an optimization framework is adopted for collaborative optimization of hydrogen production power supply power, electrolytic cell power, electric energy storage power and electrolytic cell time sequence production state, a finite time domain rolling solving method is adopted in optimization, the rolling time domain length is hour level, the sampling time is minute level or hour level, an optimization objective function and a constraint model are established respectively, and the optimization objective function and the constraint model are optimized. And solving the optimization model by adopting a mathematical programming or heuristic algorithm to obtain the operation power of each device of the multi-electrolytic cell hydrogen production system and the electrolytic cell state. According to the method, under the wide-range power fluctuation working condition, battery energy storage weakening of frequent starting and stopping of the electrolytic cell is achieved, under the narrow-range power fluctuation working condition, battery energy storage is achieved, it is guaranteed that the electrolytic hydrogen production system operates at the optimal efficiency, and maximum energy utilization and efficient operation of the system are guaranteed; and a new method is provided for collaborative optimization control of the multi-electrolytic-bath hydrogen production system.

The invention relates to the technical field of hydrogen production, in particular to equipment for preparing hydrogen from biomass, a method for preparing hydrogen from biomass and application. The equipment comprises a biomass pretreatment system and a chemical-looping hydrogen production system, wherein the biomass pretreatment system comprises a drying unit, a crushing unit and a granulating unit; the chemical-looping hydrogen production system comprises a biomass hydrogen production reduction reactor, a hydrogen purification device and a dust remover; the dust remover is connected with a regeneration storage tank and an air oxidation reactor; the air oxidation reactor is connected with the biomass hydrogen production reduction reactor; the granulating unit is connected with the biomass hydrogen production reduction reactor; a first heat exchanger is arranged between a synthesis gas outlet of the biomass hydrogen production reduction reactor and the hydrogen purification device, and a water vapor outlet of the first heat exchanger is connected with the biomass hydrogen production reduction reactor; and an oxygen-poor waste gas outlet of the air oxidation reactor is connected with the drying unit. The equipment is simple in structure, waste heat is fully utilized, energy consumption is reduced, hydrogen purity and yield are improved, and carbon dioxide is captured.

A device and method for producing hydrogen by biomass gasification, relating to the technical field of producing hydrogen by biomass gasification, comprises a gasifier, a primary cyclone separator, a cracking furnace, a heat recovery device, a secondary cyclone separator, a filter, a water washing unit, a desulfurization unit, a conversion unit, a pressure swing adsorption unit, a return device, a steam drum, an ash hopper I and a fly ash cooler; a distribution plate is arranged in the gasifier, and a biomass feed port is arranged above the distribution plate; a slag discharge ring pipe is connected at the central notch of the cone bottom of the distribution plate of the gasifier, and a gasifying agent nozzle is arranged in the slag discharge ring pipe; a gasifying agent inlet is arranged in the gas chamber area of ​​the gasifier; a dense phase section and a dilute phase section are arranged from bottom to top above the distribution plate of the gasifier; the top outlet of the gasifier is connected with the inlet of the primary cyclone separator, and the scheme greatly increases the primary conversion efficiency of the fly ash, and correspondingly reduces the invalid fly ash circulation amount between the gasifier and the primary cyclone separator.

This invention relates to the field of hydrogen energy production, specifically to a composite material for improving the performance of magnesium-based hydrolysis hydrogen production, comprising a Mg-Ca alloy and Mg2M, wherein the mass percentage of Mg2M is 8%-15%; and the mass percentage of Ca in the Mg-Ca alloy is 8%-12%. The preparation method includes: Mg-Ca alloy preparation: magnesium and calcium materials are melted in an inert gas atmosphere at a melting temperature of 740-760℃, and then cooled to room temperature to obtain the Mg-Ca alloy; Mg2M preparation: magnesium and Mg2M materials are melted in an inert gas atmosphere at a melting temperature of 740-760℃, and then cooled to room temperature to obtain the Mg2M material; Ball milling: the Mg-Ca alloy and Mg2M are mechanically crushed and then pre-ball milled, followed by fine ball milling. By implementing this method, the conversion time for hydrogen production from magnesium-based materials can be improved.