1 / 21

Treating Coal-Bed Methane Produced Water for Beneficial Use by MFI Zeolite Membranes

Treating Coal-Bed Methane Produced Water for Beneficial Use by MFI Zeolite Membranes. Contract #: DE-FC26-04NT15548 Project term: 10/01/04 ~ 09/30/07 Principal Investigator: Junhang Dong Project Manager: Robert Lee Petroleum Recovery Research Center

kemp
Download Presentation

Treating Coal-Bed Methane Produced Water for Beneficial Use by MFI Zeolite Membranes

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Treating Coal-Bed Methane Produced Water for Beneficial Use by MFI Zeolite Membranes Contract #: DE-FC26-04NT15548 Project term: 10/01/04 ~ 09/30/07 Principal Investigator: Junhang Dong Project Manager: Robert Lee Petroleum Recovery Research Center Petroleum and Chemical Engineering Department New Mexico Tech, Socorro, NM 87801 Ph: (505) 835-5293; Fax: (505) 835-5210; Email: jhdong@nmt.edu Program Manager: Jesse Garcia NETL/DOE, Tulsa April 17, 2004

  2. THE RESEARCH GROUP Spring 2005 Justin Monroe, Ben Brooks, Marlene Axness, Alex Bourandas, Junhang Dong, Rich Zhang, Theo Hosemann Xuehong Gu, Liangxiong Li, Colin Edwards, Ani Kulkarni, Chunkai Shi

  3. Grass Alfalfa 1% PW, 1,800ppm 0% PW 0% PW 1% PW, 1,800ppm 100% PW, 180,000ppm 10% PW, 18,000ppm 10% PW, 18,000ppm 100% PW, 180,000ppm (Hobbs) (~CBM) Hobbs oilfield PW 180,000ppm; Farmington CBM PW 18,000ppm. From Brittni Romero (Socorro middle school), NM State Science Fair 2005

  4. CBM Produced Water Management Challenge and Our Strategy SEPARATION Gas-field & Oilfield Produced Water Clean Water (Beneficial uses) Concentrated Prod. Water Disposal, e.g. deep well injection (costly) … Challenge: Lacking of technology for efficient SEPARATION Goal of this project: Reverse osmosis purification of CBM produced water by molecular sieve zeolite membranes

  5. Comparison With Benchmark Polymeric RO Membranes Properties Polymer Membrane Zeolite membrane Organic resistancePoor Excellent Organic rejection Incapable of Very good Ion rejectionGood Good Applicable TDS levelLow (<4%) High (to saturation) Membrane regenerationDifficultSimple Lifetime Short (< 3 mon) Long (> 5yr) Chemical stabilityUnstable in low pHStable: acidic to basic Operating pressure >800 Psi< 450 Psi Thermal stability Poor Outstanding Water flux>5 kg/h.m2~0.5 kg/h.m2 Membrane costLow High

  6. PROJECT OBJECTIVES PHASE 1: Mechanisms of the reverse osmosis process on zeolite membranes and factors determining the membrane performance (10/04 ~09/05) GO/NO GO point PHASE 2: Membrane improvement and operating condition optimization to enhance water flux and ion rejection (10/05~09/06) GO/NO GO point PHASE 3: Long-term reverse osmosis operation, data generation, and evaluations of technical and economic feasibilities (10/06~09/07)

  7. SCHEDULE

  8. Research Progress (PHASE 1) SUBTASK 1.1  Synthesize and improve zeolite membranes • In-situ growth is better than seed-secondary growth for MFI type (pd = 0.55nm) • Seed-secondary growth is better than in-situ for FAU type (pd = 0.74 nm) • Synthesis of high quality MFI membranes on commercial tube substrates (Pall Co.) MFI membrane NaY (FAU) membrane Substrates and DESAL unit

  9. Zeolite pore Pt-Co cluster C2+ H2 sweep CH4 feed CH4 H+ CHx H2 Zeolite framework Characterization & broader applications MFI Type Membranes FAU (NaY) Membranes MFI for separations of xylene isomers. (AIChE J. 2005. In preparation) NaY for CO2/N2/H2O separation at 200oC. (Ind. Eng. Chem. Res., 2005) MFI-fiber integrated sensor for water monitoring. (Optics Letters, 2005) Pt-Co/NaY for CH4 conversion to H2 and C2+. (Catalysis Letters, 2005)

  10. SUBTASK 1.2  Water and ion transport mechanisms Cross-section Pore dia. ~ 0.55 nm Film of inter-grown crystals Undesirable intercrystal pore Surface Zeolitic pore

  11. Ion and Water Transport Through the Zeolite Membrane — Separation Mechanism • RO permeation mechanism: • 1. Rejection size exclusion (high) • 2. Lower rejection at intercrystal pores • 3. Flux: water and ion diffusivities

  12. 1.3 Effects of operating conditions RO desalination for LiCl and NaCl solutions of 2.75MPa.

  13. Mechanism: Theoretical model for ion transport & RO process Fick’s Law equation: Modified Diffusion Model (Steps 1+2): Ions entering zeolitic pores: Water entering zeolitic pores: Ion con. Inside pore on feed side: Step 1 selectivity: Step 2 selectivity: Ion flow rate: Water flow rate: Overall selectivity:

  14. Effect of inter-crystal pores and membrane modifications(PHASE 2, SUBTASK 2.1)

  15. Program status Slightly ahead the schedule Minor adjustment • Economic evaluation (via simulation) earlier ? • Received many inquiries about the economic feasibility. • Start building the demon unit earlier ?

  16. Sensor Program at NMTHai Xiao (PRRC/EE, NMT)Junhang Dong (PRRC/ChE, NMT) • Objective • Robust sensors for in-situ detection/monitoring of various chemicals • involved energy industry and environment protection. • Challenges: • Highly sensitive and selective for in-situ and continuous operation. • Strategy: • Nanomaterial-enabled optical chemical sensors by interdisciplinary • approaches.

  17. 10ppm (c) Silicalite sensor response to isopropanol concentration in water. MFI (Si/Al=200) sensor response to pentanoic acid in water. (a) (b) 10m 100m (d) zeolite fiber ~4 m Sensors for Produced Water Management • Objective In-situ monitoring of various organics in produced water • Approach: Miniaturized sensors by integrating zeolites with optical fibers

  18. Precursor coating Drop of polymeric precursor (b) (a) Optical fiber Sensors for Coal-Firing Power PlantsFunded by DOE/NETL (4/1/05 – 3/31/08) • Objective: Develop low-cost, reliable, and miniaturized sensors for in-situ monitoring of gas composition in flue or host gas streams of coal-firing power plants. • Challenge: Harsh environment: high temperature, high pressure, and particulates • Strategy: Nanocrystalline doped-ceramic enabled optical fiber sensors One of the proposed sensor structures YSZ coated fiber tip Sensor response to O2 and N2 at 500C Photo of the experimental setup

  19. 100% N2 Isopropanol (1.3%) in N2 Sensor response to isopropanol concentration in N2. Inset: response to gas switching. Sensors for Environmental Monitoring • Sensors for in-situ chemical vapor detection • Sensors for in-situ detection of heavy ions (e.g. Hg)

  20. Sensors for Hydrogen InfrastructurePlanned Work • Fiber sensors for hydrogen production and fuel cells • Real time and in-situ monitoring the chemical compositions to achieve optimal fuel cell operations. • Small size for easy deployment/integration. • High temperature capability and material compatibility for solid oxide fuel cells. • Fiber sensors for hydrogen transportation and storage • Continuous monitoring of hydrogen flow and leakage. • Remote and distributed operation to pin-point the problem. • Passiveness for maximum safety.

  21. THANK YOU! SOCORRO NMWILDLIFE REFUGE

More Related