9 Amine unit Advantages Disadvantages High capacity processing unit High reactivity of gas and amine efficient removal of acid gasesHigh recovery of hydrocarbon gasesDisadvantagesHigh energy consumptionLoss of solvent during processing
14 Membrane Advantages Disadvantages Low capital investment Ease of operationNo chemicals neededDisadvantagesRequirement of feed gas pretreatmentGas compressionGenerally higher loss of hydrocarbon gasesLow capacity
19 CO2 removal result Conventional method (Amine unit) New technology Feed gasProduct gasAcid gas% lossC10.8970.970.0260.25%C20.0070.0080.00040.38%C30.0010.0000.12%i-C40.00020.000622%CO20.0940.020.972Conventional method(Amine unit)Feed gasProduct gasAcid gas% lossC10.8970.9720.0240.2%C20.0070.0080.0011.4%C30.00529.8%i-C40.00020.00010.002479.3%CO20.0940.0190.968New technology
20 Williams Milagro plant capacity: 576 MMCF/ day Cost comparisonWilliams Milagro plant capacity: 576 MMCF/ dayConventional method(Amine unit)FCIOperating costAnnualized cost$2,838,000$31,969,000$32,158,000FCIOperatingcostAnnualizedCost$1,914,000$13,674,000$13,802,000New technology*Operating costs are per year**Annualized costs based on lifetime of 15 years
23 Williams Milagro plant capacity: 576 MMCF/ day Cost comparisonWilliams Milagro plant capacity: 576 MMCF/ dayConventional method(Amine unit)FCIOperating costAnnualized cost$3,043,000$39,495,000$39,698,000FCIOperatingcostAnnualized$1,987,000$15,656,000$15,789,000New technology*Operating costs are per year**Annualized costs based on lifetime of 15 years
24 New Technology Advantages Disadvantages Low operation cost Energy efficient processReduction of green house gas emissionsRecyclable solventNo chemicals requiredDisadvantagesLoss of some ethane, propane and iso-butane
25 ConclusionThe new process design significantly reduces the energy consumption.The new process conditioning efficiency is comparable to the amine process, some loss of propane and butane.The new process is environmentally friendly.