Process using amine blends to inhibit chloride corrosion in wet hydrocarbon condensing systems

摘要

The disclosure is a process for inhibiting corrosion in condensing systems comprising wet hydrocarbons and chloride which comprises feeding a mixture of amines to the condensing system to elevate the pH profile of condensed water above the range in which severe corrosion of system internals can occur. The amine blend is formulated to preclude deposition and accumulation of the hydrochloride salts of the amines above the water dewpoint and is optimized to the condensing system to minimize amine treat rate. In one embodiment, the amine blend feed rate is controlled using a small condensing system which condenses a slipstream of gas taken from the system upstream of the condensing zone and continually measures the pH profile in the condensing zone.