Valves for the Amine Treating Unit
Scrubs H2S and CO2 from sour gas or refinery off-gas using an amine solvent. The defining valve problem is amine's foaming and corrosivity, compounded by the sour service classification of every wetted part.
What are the critical valves in a Amine Treating Unit?
Rich/lean amine exchanger isolation (Gate Valves) — Corrosive rich-amine service demands upgraded trim over the lean side. Acid gas outlet (Control Valves) — H2S/CO2 acid-gas flow control to the sulfur recovery unit or flare. Amine circulation pump isolation (Check Valves) — Non-return protection on the continuously circulating amine loop.
Critical Valve Points
Rich/lean amine exchanger isolation
Gate Valves →Corrosive rich-amine service demands upgraded trim over the lean side.
Acid gas outlet
Control Valves →H2S/CO2 acid-gas flow control to the sulfur recovery unit or flare.
Amine circulation pump isolation
Check Valves →Non-return protection on the continuously circulating amine loop.
Unit-Level Valve Strategy
- Every wetted valve in the acid-gas path is sour-service rated per NACE MR0175, including the lean/rich amine exchanger and control valves
- Amine solution is corrosive to carbon steel at the rich-amine (CO2/H2S-loaded) end - stainless trim is standard even where the body stays carbon steel
- Control-valve trim in the rich-amine flash and stripping sections sees cavitation-prone flashing duty
Equipment in this Unit
Fluids in this Unit
Governing Standards
Related process units
Sealing systems specified in this unit
Connected Engineering
Sourcing valves for a Amine Treating Unit?
Send your unit valve list — we supply the full set (Gate Valves, Control Valves, Check Valves) with certification matched to NACE MR0175 / ISO 15156, in one PO.