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Special pearlite for air separation unit

Special pearlite for air separation unit
Expanded perlite, a special pearlite for air separation unit, is widely used in large, medium and small air separation units, and has become a good thermal insulation material for air separation cold box and liquefied gas storage tank. With the large-scale air separation unit, the capacity of pearlite filled in the cold box is also increased. Therefore, attention should be paid to the safety problems during the loading and unloading of pearlite to avoid accidents.
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Sep 04, 2020
On the morning of Sep 4, Shunhe Hui Nationality District invited more than 30 citizens' representatives to form an investigation group and went to Kai
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Lean alloy steel is often used in special pressure-bearing equipment. The alloying elements often added include manganese, silicon, chromium, nickel, molybdenum, vanadium, boron and rare earth elements. Most of silicon and manganese melt into ferrite, only a small amount into cementite, which are commonly used strengthening elements in lean alloy steel. The amount of chromium and nickel is generally small, and the main role of chromium and nickel is to increase the undercooling degree of austenite and refine the microstructure. Part of chromium is dissolved in ferrite and some in cementite, which can improve the stability of cementite. Molybdenum is dissolved in ferrite slightly, and has the effect of solid solution strengthening. It is a strong carbide forming element, which can improve the high temperature strength of steel and improve the temper brittleness.
Dec 02, 2020
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