What is the impact of insulation in high and medium pressure urea equipment within pressure vessels on corrosion? Are there any special requirements?
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What is the impact of insulation in high and medium pressure urea equipment within pressure vessels on corrosion? Are there any special requirements?
Standard answer: Poor insulation of the urea equipment in pressure vessels can exacerbate corrosion of the lining inside high-pressure equipment; in large-scale urea plants, the gas-phase contact areas of high and medium-pressure equipment often suffer from local corrosion due to inadequate insulation. Special requirements: Special attention must be paid to insulating the gas-phase part of the urea high-pressure equipment, especially the upper manhole covers and lifting lugs. Inadequate insulation can lead to corrosion due to local condensation of gases inside the equipment. During maintenance, do not damage the insulation layer; any damage to the insulation caused by maintenance should be repaired promptly. When the insulation layer is the protective layer, the overlap joint of the protective layer faces downward.