Hydrogen Liquefaction Unit(HLU)
0102030405
Fullcryo Large-scale Hydrogen Liquefaction Facility
Product Description
Large-scale Hydrogen Liquefaction Facility" refers to an industrial plant that is specifically designed to liquefy hydrogen gas on a significant scale. This facility is equipped with the necessary technology and infrastructure to efficiently convert large volumes of hydrogen from its gaseous state to a liquid state, which is achieved by cooling the gas to cryogenic temperatures. The liquefaction process enhances the energy density of hydrogen, making it more practical for storage and transportation, and is particularly useful for applications such as fuel cell vehicles, industrial processes, and energy storage systems.
Key Components and Working Principle
Pre-Cooling:
Compression: Hydrogen gas is compressed to high pressure using multi-stage compressors. This initial compression step is vital for the subsequent cooling process.
Initial Cooling: The compressed hydrogen is pre-cooled using heat exchangers. Commonly, liquid nitrogen or other cryogenic fluids are used to lower the temperature of hydrogen before further cooling.
Heat Exchangers:
Counterflow Heat Exchangers: These are used to efficiently transfer heat between the high-pressure incoming hydrogen gas and the low-pressure, colder outgoing gas, maximizing energy efficiency.
Expansion:
Turboexpanders: The pre-cooled hydrogen undergoes expansion through turboexpanders, significantly reducing its temperature. Turboexpanders are efficient because they do work on the expanding gas, which cools it further.
Joule-Thomson (JT) Valves: The hydrogen is further cooled using JT valves, which allow for controlled expansion and cooling of the gas to reach the liquefaction temperature.
Liquefaction:
Cryogenic Cooling: Through successive stages of cooling and expansion, the hydrogen gas reaches its liquefaction point at approximately 20.28 K. The liquid hydrogen is then collected in insulated storage vessels to maintain its cryogenic state.
Storage and Transfer:
Insulated Storage Tanks: Specially designed cryogenic tanks store liquid hydrogen, ensuring minimal heat transfer and preventing vaporization.
Transfer Lines: Insulated transfer lines are used to move liquid hydrogen from the liquefaction unit to storage or usage points with minimal temperature loss.
Advantage
Hydrogen liquefaction capacity: 5-100T/Day
◆Oil-Free Reciprocating Compressor,in case of H2 Refrigeration
◆High-Efficient Oil Removal System, remove to <10 ppb
◆Oil-Injected Screw Compressor, incase of He Refrigeration
◆High-speed Turbo Expander
◆Vacuum Insulated Cold Box
◆Low Leakage Rate Heat Exchanger
◆Continuous Ortho-Para H2 Converters,built-in heat exchangers
◆Orth-Para H2 Converters, built-in cold box
◆Multi-Stage Plate-Fin Heat Exchanger,leakage rate <10-9Pa.m/s
◆End-Stage Plate-Fin Heat Exchanger