Questions about pressure pipelines? ? ? Regarding the transport of solids
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2015 Latest **Catalogue of Special Equipment – Pressure Pipes: These are tubular devices that use a certain pressure to transport gases or liquids. They are defined as pipes with a maximum operating pressure of 0.1 MPa (gauge pressure) or more, carrying gases, liquefied gases, steam, or liquids that are flammable, explosive, toxic, corrosive, and have a maximum operating temperature equal to or higher than their standard boiling point; such pipes also have a nominal diameter of 50 mm or more. Except for pipes with a nominal diameter of less than 150 mm and a maximum operating pressure of less than 1.6 MPa (gauge pressure), as well as the pipes that form part of the equipment used for transporting non-toxic, non-flammable, and non-corrosive gases. Among them, the safety supervision and management of oil and gas pipelines shall also be carried out in accordance with laws and regulations such as the Work Safety Law and the Oil and Gas Pipeline Protection Law. Are pipelines for transporting solids considered pressure pipelines? Such as the catalyst pipes in a catalytic cracking unit? ? How are the construction and testing standards determined? ?
It should be a pressure-bearing pipe, not a pressure pipe, right?
Two questions: if it’s a pure solid, would there be pressure? If it’s not a pure solid, what should be used for transportation?