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New Gas Separation Process Presented by Andrea Tran & Conner Cruson.

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Presentation on theme: "New Gas Separation Process Presented by Andrea Tran & Conner Cruson."— Presentation transcript:

1 New Gas Separation Process Presented by Andrea Tran & Conner Cruson

2 Outline Conventional processing Membrane technology Amine vs. Membrane Introduction of the new technology Advantages/Disadvantages of new process

3 Conventional processing

4 Overview of Gas plant processing Field operations/Inlet receiving Inlet compression Gas treating Dehydration Hydrocarbon recovery Outlet compression

5 Conventional Process

6 Demethanizer unit

7 De-ethanizer unit

8 Amine sweetening unit ACID GAS RECYCLE AMINE SOUR GAS SWEET GAS

9 High capacity processing unit High reactivity of gas and amine  efficient removal of acid gases High recovery of hydrocarbon gases Amine unit High energy consumption Loss of solvent during processing Advantages Disadvantages

10 Other alternatives

11 Membrane technology PERMEABILITY OF GASES Driving force: Partial pressure Gas permeability (determined by membrane material)

12 To increase the recovery of methane, a multistage membrane unit is desired: Membrane technology

13 Limitation of Membrane

14 Low capital investment Ease of operation No chemicals needed Membrane Advantages Disadvantages Requirement of feed gas pretreatment Gas compression Generally higher loss of hydrocarbon gases Low capacity

15 Our new technology

16 Replace the amine treatment Reduce the overall cost of gas processing Reduce green house gas emissions Objective

17 Process design Technical information cannot be disclosed at this time due to IP protection issue. Only results and economics will be compared.

18 Design 1_CO 2 removal New technology 63,030 lb-mole/hr 89.7% C 1 0.7% C 2 0.1% C % iC 4 9.4% CO lb-mole/hr 97.2% C 1 0.8% C 2 0.1% C % iC 4 1.9% CO lb-mole/hr 2.4% C 1 0.1% C 2 0.5% C % iC % CO 2 CLEAN GAS: ACID GAS: FEED GAS: Amine treatment unit 63,030 lb-mole/hr 89.7% C 1 0.7% C 2 0.1% C % iC 4 9.4% CO lb-mole/hr 97% C 1 0.8% C 2 0.1% C % iC 4 2% CO lb-mole/hr 2.6% C % C 2 0% C % iC % CO 2 FEED GAS: CLEAN GAS: ACID GAS:

19 CO 2 removal result Conventional method (Amine unit) New technology

20 Williams Milagro plant capacity: 576 MMCF/ day FCI Operating cost Annualized cost $2,838,000$31,969,000$32,158,000 *Operating costs are per year **Annualized costs based on lifetime of 15 years Cost comparison FCI Operating cost Annualized Cost $1,914,000$13,674,000$13,802,000 Conventional method (Amine unit) New technology

21 Design 2 _CO 2 /H 2 S removal New technology 63,030 lb-mole/hr 85% C 1 0.8% C 2 0.2% C 3 5% H 2 S 9% CO lb-mole/hr 97.7% C 1 0.9% C 2 0.2% C % H 2 S 1.1% CO lb-mole/hr 3.9% C 1 0.1% C 2 0.1% C % H 2 S 59.3% CO 2 CLEAN GAS: ACID GAS: FEED GAS: Amine treatment unit 63,030 lb-mole/hr 85% C 1 0.8% C 2 0.2% C 3 5% H 2 S 9% CO lb-mole/hr 96.8% C 1 0.9% C 2 0.2% C 3 0.0% H 2 S 2% CO lb-mole/hr 0.11% C 1 0.0% C 2 0.0% C % H 2 S 60% CO 2 FEED GAS: CLEAN GAS: ACID GAS:

22 CO 2 /H 2 S removal result Conventional method (Amine unit) New technology

23 Williams Milagro plant capacity: 576 MMCF/ day FCI Operating cost Annualized cost $3,043,000$39,495,000$39,698,000 *Operating costs are per year **Annualized costs based on lifetime of 15 years Cost comparison FCI Operating cost Annualized cost $1,987,000$15,656,000$15,789,000 Conventional method (Amine unit) New technology

24 Low operation cost Energy efficient process Reduction of green house gas emissions Recyclable solvent No chemicals required New Technology Advantages Disadvantages Loss of some ethane, propane and iso-butane

25 The 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. Conclusion

26 Q & A


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