GAS TREATING & PROCESS HEAT RECOVERY
Lean / Rich Amine Heat Exchanger Selection
Assess heat recovery between hot lean amine and rich amine using the actual solvent condition and the available hydraulic margin.
- Characterise both amine streams
- Provide the solvent type and concentration, lean and rich loading, contaminants and available fluid-property data. State flow rates, inlet temperatures, target outlet temperatures and operating pressures for normal and limiting cases.
- Define the recovery objective
- Identify the required rich-stream preheat and lean-stream cooling, together with the associated process constraints. Compare the exchanger heat balance with the wider regenerator and cooling system. Do not infer reboiler-energy savings without a consistent process baseline.
- Review pressure drop and flow arrangement
- Confirm allowable pressure drop on both circuits and assess the operating pressure profile, including the possibility of gas release where relevant. Select the channel and pass arrangement against heat transfer, hydraulics and the expected fouling behaviour.
- Address fouling, materials and maintenance
- Review deposits, solids, degradation products and corrosion history with the process team. Select plate materials and panel seals from this evidence. Removable covers provide inspection access, but do not remove the need for a cleaning strategy and service clearance.
- Why assess a welded block design?
- Welded heat-transfer channels remove interplate gaskets, while the block format concentrates plate area in a compact footprint. Corrugated channels promote turbulence; the benefit must be assessed against pressure drop and fouling. Removable panels allow access for suitable mechanical cleaning.
- Design data for thermal selection
- Submit lean and rich stream flow rates in kg/h, inlet and target outlet temperatures in °C, operating and design pressures in barg, allowable pressure drop in kPa, solvent composition and loading, fluid properties and fouling history. State required duty in kW and minimum temperature approach where specified. These are enquiry fields, not published operating limits.
- Material assessment
- Candidate plate alloys may include 316L, duplex stainless steel, 254 SMO, Alloy 20 or C276, subject to manufacturing availability and a corrosion review for the actual solvent chemistry, contaminants and temperature. No alloy is a universal selection for amine service.
- Prepare a retrofit assessment
- For an existing amine exchanger, include its datasheet, nozzle arrangement, dimensions and measured performance. Agree the proposed duty, installation changes, inspection documents and performance acceptance before supply.
Send Your Process Data for Heat Exchanger Selection
Provide both fluids, flow rates, inlet and outlet temperatures, operating and design pressures, allowable pressure drop and material requirements. For a replacement, include the nameplate and arrangement drawing.