Hydrogen liquefaction equipment provided with three turbo expander units connected in series

A turboexpander, hydrogen technology, applied in liquefaction, refrigeration and liquefaction, lighting and heating equipment, etc., can solve problems such as high energy consumption, and achieve the effect of low energy consumption and high hydrogen liquefaction efficiency

Pending Publication Date: 2021-02-12
BEIJING INST OF AEROSPACE TESTING TECH +1
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  • Abstract
  • Description
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  • Application Information

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This process consumes a lot of energy

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  • Hydrogen liquefaction equipment provided with three turbo expander units connected in series
  • Hydrogen liquefaction equipment provided with three turbo expander units connected in series

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Embodiment Construction

[0039] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0040]It should be noted that, in the embodiment of the present invention, the medium output refers to the ability to produce 5-10 tons of liquefied hydrogen per day. Hydrogen is a diatomic molecule, and the two hydrogen nuclei rotate around their axes. According to the relative orientation of the two nuclear spins, hydrogen molecules can be divided into orthohydrogen and parahydrogen. The usual hydrogen is a mixture of these two forms of hydrogen molecules. The equilibrium concentration of ortho-parahydrogen is only related to temperature. The hydrogen whose concentration of ortho-parahydrogen reaches a stable equilibrium at different temperatures is called equilibrium hydrogen. At a temperature above room temperature, it contains 75% orthohydrogen and 25% parahydrogen. At the liquid hydrogen saturation temperature of 20.4K, the equilibrium concentratio...

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Abstract

The invention discloses hydrogen liquefaction equipment provided with three turbo expander units connected in series. The hydrogen liquefaction equipment comprises a vacuum box, a hydrogen purification device, a pre-cooling device, a first hydrogen compressor unit, a second hydrogen compressor unit, a first turbo expander unit, a second turbo expander unit, a third turbo expander unit, a first low-temperature adsorber, a second low-temperature adsorber, heat exchangers, ortho-parahydrogen converters, regulating valves, throttle valves and a liquid hydrogen storage tank. According to the hydrogen liquefaction equipment, 5-10 tons of liquefied hydrogen can be produced every day, three turbo expander units are connected in series for refrigeration, a hydrogen refrigeration circulating systemconnected to high-pressure throttling refrigeration in parallel is adopted, raw material hydrogen is converted, cooled and liquefied through the multiple stages of ortho-parahydrogen converters, and the hydrogen liquefaction equipment has the advantages of being high in hydrogen liquefaction efficiency and low in energy consumption.

Description

technical field [0001] The invention relates to the technical field of hydrogen energy utilization, in particular to a hydrogen liquefaction device provided with three series-connected turboexpander units. Background technique [0002] With the continuous acceleration of the global industrialization process, the consumption of fossil fuels is increasing, and the pollution to the environment is becoming more and more serious. It is urgent to find a clean fuel as an alternative. Hydrogen is the most common element in nature, constituting 75% of the mass of the universe. It has a wide range of sources, various preparation methods, clean and pollution-free, and has the highest mass energy density. These unique advantages make it widely used in the fields of energy and chemical industry . [0003] Hydrogen can be used as a chemical raw material, or as a fuel for rockets, gas turbines, and internal combustion engines. It can also be converted into electricity by fuel cell systems...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25J1/02
CPCF25J1/0225F25J1/0257F25J1/001F25J1/005F25J1/0052F25J1/0067F25J1/0204F25J1/0221F25J1/025F25J2205/60F25J2210/42F25J2220/02F25J2270/16
Inventor 安刚张震兰玉岐杨昌乐许鸿昊姜天徐明华
Owner BEIJING INST OF AEROSPACE TESTING TECH
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