Top of the line corrosion apparatus

A method for determining corrosion in wet gas pipelines comprising the steps of:

• a) collecting a portion of the vapor phase from a wet gas pipeline,
• b) transferring at least a portion of the vapor phase collected in a) to a corrosion test unit comprising an gas inlet port, a specimen holder section, one or more corrosion testing specimens arranged in said specimen holder section, a liquid collection outlet port, said specimen holder section having external, temperature adjustable means, wherein the inlet side of the liquid collection and measuring unit is connected to the liquid collection outlet port,
• c) chilling said specimen holder section so as to cause condensation from said vapor phase onto said corrosion testing specimens,
• d) warming the body member of said test unit to prevent condensation independent of that on the specimens, and
• e) withdrawing from said corrosion test unit at least a portion of the vapor phase after the vapor phase is subjected to condensation chilling for return to an autoclave,
• f) draining and withdrawing said condensation via said liquid collection outlet port,
• g) measuring the volume of said condensation m a liquid collection and measuring unit,
• h) returning said condensation via a pump to the autoclave, and
• i) halting periodically the flow of vapor from the pipeline to the corrosion testing unit, and inspecting said corrosion testing plates, replacing with new specimens or specimen section as needed.

An apparatus suitable for determining corrosion in wet gas pipelines comprising:

• a) a high pressure, high temperature autoclave;
• b) a corrosion test unit comprising a gas inlet port, a specimen holder section, a plurality of corrosion testing specimens affixed on said specimen holder section, a liquid collection outlet port, and a gas return line to the autoclave a), said specimen holder section having external, temperature adjustable means
• c) a warming element placed around or at least partially around the main body of the corrosion test unit,
• wherein the warming element and test section are insulated.