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O Processo Claude para Liquefação

1902
  • Georges Claude
Gas liquefaction plant utilizing the Claude process for industrial applications.

(Imagem gerada apenas para fins ilustrativos)

O processo Claude aprimora o Hampson-Linde cycle by incorporating an expansion engine or turbine. A portion of the compressed gas does work in an expander, causing a much larger temperature drop (nearly isentropic expansion) than Joule-Thomson expansion alone. This provides more efficient cooling, making it the dominant method for large-scale gas liquefaction and separation today.

Georges Claude recognized the thermodynamic inefficiency of relying solely on the isenthalpic Efeito Joule-Thomson. He reasoned that making the gas perform external work during expansion would extract more energy and thus produce a greater cooling effect. In his system, the main stream of high-pressure gas is split. One part goes to an expansion engine, where it cools significantly while producing work. This extremely cold gas is then used to pre-cool the other part of the high-pressure stream in a heat exchanger. This second stream then undergoes a final Joule-Thomson expansion to produce the liquid. By combining the bulk cooling from the expander with the final-stage liquefaction from the J-T valve, the Claude cycle achieves higher efficiency and can operate at lower initial pressures than the Linde cycle. The work produced by the expander can also be recovered to help power the initial compressor, further improving overall efficiency. This principle is fundamental to virtually all modern large-scale cryogenic plants.

UNESCO Nomenclature: 2212
Termodinâmica

Tipo

Ciclo Termodinâmico

Interrupção

Incremental

Uso

Uso generalizado

Precursores

  • Hampson-Linde Cycle
  • Brayton cycle (termodinâmica basis for the expansion engine)
  • Efeito Joule-Thomson
  • Desenvolvimento de motores e turbinas de expansão de alta velocidade confiáveis

Aplicações

  • industrial em grande escala separação de ar unidades (ASUs)
  • production of liquid nitrogen, oxygen, and argon
  • usinas de liquefação de hélio e hidrogênio
  • liquefied natural gas (LNG) production
  • turboexpansores no processamento de gás natural

Patentes:

  • FR324949A

Ideias de Inovação Potencial

  • turboexpanders for geothermal power generation
  • criogênico captura de carbono technologies using the claude cycle principle
  • integrated liquefaction and power generation cycles for LNG facilities
  • closed-brayton-cycle cryocoolers for space applications
  • advanced hydrogen liquefiers for fueling stations and transport
  • small-scale, high-efficiency helium liquefiers for MRI magnets
  • cryogenic energy storage systems utilizing claude cycle principles
  • air separation units powered by renewable energy sources
  • next-generation LNG processes with mixed-fluid cascade and claude cycles
  • mobile nitrogen plants for oil and gas well servicing
Related to: Claude process, expansion engine, liquefaction, criogenia, air separation, Georges Claude, isentropic expansion, thermodynamics, efficiency, LNG.

Contexto histórico

O Processo Claude para Liquefação

1900
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1902
1902
1907
1909
1910
1900
1900
1900-12-14
1902
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1907
1909
1910

(Caso a data seja desconhecida ou irrelevante, por exemplo, "mecânica dos fluidos", é fornecida uma estimativa aproximada de seu surgimento notável)

10º ano aniversário

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