Coupled hydrogen-rich fuel reformation hydrogen making system

Abstract

The invention discloses a coupled hydrogen-rich fuel reformation hydrogen making system, in particular to an efficient heat transfer coupled hydrogen-rich fuel reformation hydrogen making system. The system comprises a heat supply unit, a CO purification and elimination unit and a coupling reformation reactor; wherein, the inside of the coupling reformation reactor has a plate-fin structure, comprising a heat transfer zone and a heat transfer reaction zone; raw material finned pipelines are through the heat transfer zone and the heat transfer reaction zone; the outlet of the raw material finned pipelines are communicated with the inlet of the CO purification and elimination unit; the outlet of the CO purification and elimination unit is communicated with the hydrogen inlet of a fuel cell by a heat exchanger; the heat supply unit supplying heat using the heat provided from the combustion between a hydrogen-rich fuel and air or oxygen is communicated with the inlet of the heat transfer zone of the coupling reformation reactor and the outlet of the heat transfer zone is communicated with the inlet of the heat transfer reaction zone. The invention has reasonable structure, safe heat transfer, compact system, good control to the temperature of the catalytic reaction unit, flexible adjustment, high energy utilization efficiency and stable and reliable system.

Description

technical field [0001] The invention relates to a hydrogen production system by reforming hydrogen-rich fuel, in particular to a coupled hydrogen production system by reforming hydrogen-rich fuel. Background technique [0002] Distributed power generation technology has high energy utilization efficiency (>80%), can use various renewable energy sources, can meet the needs of special occasions and energy diversification, can provide cold energy or heat energy at the same time, and realize comprehensive cascade utilization of energy, safe Stable, no power distribution loss, low installation cost, suitable for remote control and monitoring, etc., is an important supplement to traditional power generation methods in the 21st century and one of the most important energy utilization methods. [0003] Fuel cell combined heat and power system can be applied to power supply and hot water supply in homes, communities, hospitals, commercial buildings, etc., or large-scale distribute...

AI Technical Summary

Problems solved by technology

[0005] Patent EP1650159 invented a hydrogen production system by steam reforming of natural gas. The system adopts an integrated cylinder structure, which consists of an ignition combustion unit, a hydrogen production unit by steam reforming of natural gas, a CO high and low temperature conversion reaction unit, and a CO purification and removal unit. It has the characteristics of high energy utilization efficiency, but the system lacks certain flexibility in the temperature regulation of the catalytic reaction unit, and at the same time, the heat cannot be transferred in time in the granular catalyst bed.

Patent CN1284721 invented a hydrogen production system by steam reforming of methanol. In this system, the reforming reactor adopts a plate-fin structure, which couples the processes of catalytic combustion heat supply, evaporation and reforming reaction, and has the advantages of high efficiency and compactness. , but in the start-up phase of the system, the catalytic combustion unit uses H 2 as fuel, thus requiring additional storage of H 2

At the same time, the catalytic combustion unit may have the phenomenon of local fuel and oxidant (air or oxygen) concentration, so that it is possible to locally release a large amount of heat due to the violent catalytic combustion reaction, causing the thinner fins to be burned through.

Patent CN2668600 also utilizes a plate-fin reforming reactor, and uses a plate-fin heat exchanger, but for the heating device, this patent uses a heater, and the control and adjustment of the temperature are not flexible enough, and there is no way to ensure that the reactor and the For the safety of heat exchangers, thinner fins are still easy to be burned through. In addition, there is room for improvement in the design of the entire system compared to the full utilization of energy.

Patent CN100341189 invented a reformer structure, including a reformer unit and a heat source unit, but there is no perfect solution for the secondary utilization of energy, and the internal structure of the reformer does not make full use of energy

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