One Question per Day, October 13, 2015
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The temperature range at which sulfides cause the fastest corrosion of equipment is ( )
426----430 degrees. -------------------------------------------
The temperature range at which sulfides cause the fastest corrosion of equipment is 426 ℃
Those upstairs really know. Below 120 degrees, inactive sulfides do not decompose, and in the absence of moisture, there is no corrosion to the equipment. 120–240 degrees: the active sulfides in the crude oil remain undecomposed. At 240–340 degrees, sulfides begin to decompose, producing hydrogen sulfide, which also starts to corrode the equipment; the corrosion intensifies as the temperature rises. At 340–400 degrees, hydrogen sulfide begins to decompose into H2 and S; sulfur then reacts with Fe to form a protective layer that prevents further corrosion. The temperature ranges from 426 to 430 degrees, and sulfur corrosion is most severe at high temperatures. At temperatures above 480 degrees, hydrogen sulfide is almost completely decomposed; meanwhile, the coking of hydrocarbons protects the equipment, and its corrosiveness begins to decrease.
At 240℃ < t < 340℃, sulfides begin to decompose, producing H2S, which corrodes the equipment; moreover, the corrosion intensifies as the temperature rises.
The temperature range at which sulfides cause the fastest corrosion of equipment is (420℃
The temperature range at which sulfides cause the fastest corrosion of equipment is (426℃
The temperature range at which sulfides cause the fastest corrosion of equipment is (426 ℃
The temperature range in which sulfides cause the fastest corrosion of equipment is (426–430 degrees)
The temperature range in which sulfides cause the fastest corrosion of equipment is (240°C < t < 340°C)