A Novel Refrigeration Cycle for Waste Rubber Cryogenic Pulverization by Utilizing Natural Gas Pipeline Pressure Exergy

Abstract:

A novel refrigeration cycle for waste rubber cryogenic pulverization is designed and presented. The novel refrigeration cycle can provide cold exergy below 173K to waste rubber cryogenic pulverization device by recovering the pressure exergy of natural gas pipeline. Water is a common undesirable component of natural gas. In order to gas transmission security, the temperature of natural gas must be above its water dew point temperature in the process of using natural gas pressure exergy. In the refrigeration cycle, the preheated high-pressure natural gas is depressurized to 0.50MPa by two turbo expander. Nitrogen gas is used as refrigerant to recovering the mechanical work and cold exergy that is generated in natural gas isentropic expansion. Then the compressed and cooled nitrogen gas is transported to waste rubber cryogenic pulverization device for producing cold exergy below 173K through expansion refrigeration. Example analysis shows that using the proposed refrigeration cycle not only can effectively recover the pressure exergy of natural gas pipeline, but also can greatly reduce the cooling cost for tire cryogenic pulverization.

• Periodical: Applied Mechanics and Materials (Volume 521)
• Pages: 735-741
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.521.735
• Online since: February 2014
• Authors: Jun Qian, Yong Qiang Xiong*, Ji Liu Wu
• Keywords: Cryogenic Pulverization, Natural Gas Pipeline, Pressure Exergy, Waste Rubber

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