Hybrid pressurized multi-stage filling and hydrogenation device

Abstract

The invention discloses a hybrid pressurized multi-stage filling and hydrogenation device which comprises the following composition units: a high-pressure unloading pry, a high-pressure compressor pry, a multi-stage filling high-pressure energy accumulator, a 70MPa high-pressure hydrogenation machine, a low-pressure unloading pry, a low-pressure compressor pry, a low-pressure energy accumulator, a35MPa low-pressure hydrogenation machine, a first four-way valve provided with a port a, a port b, a port c and a port d, a second four-way valve provided with a port e, a port f, a port g and a porth, and a water chilling unit used for cooling the high-pressure compressor pry and the low-pressure compressor pry. All the composition units are connected through a pipeline system, so that the purposes of 35MPa / 70MPa hybrid filling, low-pressure hydrogen multi-stage hybrid pressurization, and enabling the high-pressure energy accumulator and the low-pressure energy accumulator as mutual standbyhydrogen sources are achieved. On the basis of not influencing an original 35MPa skid-mounted hydrogenation device, pressurization and capacity expansion are carried out, wherein the hydrogenation pressure is increased from 35MPa to 70MPa / 35MPa for hybrid pressurization, and the daily hydrogenation scale is increased from not more than 500kg / d to 1000kg / d and above; and a pressurization and capacity expansion structure provided by the scheme has the advantages of being simple in structure, convenient to install, small in modification workload, low in cost and the like.

Description

technical field [0001] The invention relates to a hydrogenation device, in particular to a mixed pressurized multi-stage injection hydrogenation device. Background technique [0002] As the global warming problem becomes increasingly prominent and countries encourage the development and utilization of hydrogen energy, more and more hydrogen fuel cell vehicles are put into the market. Hydrogen refueling devices are to fuel cell vehicles, just like gas stations are to traditional fuel vehicles, and charging stations are to pure electric vehicles. They are an indispensable cornerstone to support the development of the fuel cell vehicle industry. [0003] At present, my country's hydrogen energy and fuel cell market is still in the market introduction stage. Due to the restrictions of my country's hydrogenation plant construction policy and land supply, the 35MPa skid-mounted hydrogenation plant is characterized by its factory modular integration, small footprint, and fast stati...

AI Technical Summary

Problems solved by technology

The small hydrogen refueling capacity leads to a shortage of supply, some fuel cell vehicles have no hydrogen to refill, and the low hydrogen refueling pressure leads to insufficient hydrogen storage capacity on-board. The cruising range of hydrogen fuel cell vehicles is not competitive enough, which limits the commercial promotion of hydrogen fuel cell vehicles

With the development of 70MPa plastic liner vehicle-mounted hydrogen storage cylinder technology, the hydrogenation pressure and hydrogenation capacity of the current 35MPa skid-mounted hydrogenation device will not be able to meet the development needs of large-scale 70MPa fuel cell vehicles in the future. On the basis of not affecting the hydrogenation performance of the original 35MPa skid-mounted hydrogenation unit, pressurization and expansion are carried out to realize 35MPa / 70MPa mixed pressurization and filling

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