Mitsubishi Heavy Industries, Ltd. · TSE:7011
Mitsubishi Heavy Industries — Technical Presentation (September 2007)
32 slides from Mitsubishi Heavy Industries's technical presentation, September 2007
Slide 1: Long-Term Demonstration of CO2 Recovery from the Flue Gas of a Coal-Fired Power Station
Long-Term Demonstration of CO2 Recovery from the Flue Gas of a Coal-Fired Power Station September 2007 Mitsubishi Heavy Industries, Ltd. (MHI) 1
Slide 2: 1. Introduction
1. Introduction 2
Slide 3: 1. Introduction
1. Introduction •Drastic rise in prices of petroleum and natural gas •coal is relatively cheap and stably available over the long term. Strong requirement for coal-fired power generation However, Coal-fired power plant release abundant CO2 Thus, CO2 capture and sequestration (CCS) for coal-fired pow
Slide 4: MHI CO2 Recovery Process
1. Introduction MHI CO2 RECOVERY PROCESS Working in collaboration with Kansai Electric Power Co., Inc. (KEPCO), MHI has developed KM-CDR process to recover CO2 from the flue gas of natural-gas-fired boilers 4
Slide 5: MHI's experience
1. Introduction MHI’s experience •MHI has delivered commercial CO2 recovery plants in the several countries. •All experience is for the flue gas from natural gas reformer or boiler. Malaysia India Japan (200T/D Max) (450T/D x 2) (330T/D max) for Urea Production for Urea Production for general Use 5
Slide 6: 1. Introduction
1. Introduction The flue gas of coal-fired boilers includes SOx, NOx,dust and other impurities . (hardly or less presents in natural gas) Long-term demonstration of CO2 Recovery from the flue gas of a coal fired power station is required. 6
Slide 7: 2. Technical considerations of CO2 recovery from coal-fired flue gas stream
2. Technical considerations of CO2 recovery from coal-fired flue gas stream 7
Slide 8: 3. Technical considerations of CO2 recovery from coal-fired flue gas stream
3. Technical considerations of CO2 recovery from coal-fired flue gas stream It is critically important to develop “CO2 recovery from coal-fired flue gas streams” to achieve the following tasks, • Confirming long-term operation • Verification of the influences of the impurities such as dust, SOx, NOx
Slide 9: 3. Demonstration Test Results
3. Demonstration Test Results 9
Slide 10: 3.1 Outline of plant
3. Demonstration test results 3.1 Out line of plant MHI was able to successfully construct the demonstration test plant at an existing coal-fired thermal power station in Matsushima, Japan. Organization Japanese Matsushima Government Power station (METI) (J-POWER) Subsidy(50％ cost share) RITE*1 J-PO
Slide 11: Schedule
3. Demonstration test results 3.1 Out line of plant Schedule 2004 2005FY 2006FY 2007 1.Engineering 2.Manufacturing 3.Construction 4.Commissioning 5.Demo-Test Demonstration term : July 2006 ~ February 2007 11
Slide 12: 3.1 Outline of plant
Table 1 Specifications of CO2 recovery demonstration plant Items Parameters (planned values) Installation location eee Neda dieeraiol Ge Reta Flue gas source Flue gas coal-fired boiler Amount of flue gas 1750 m3y/h to be treated COz recovery efficiency 90% COz recovery capacity | Planned value: 9.5
Slide 13: 3.1 Outline of plant
3.1 Out line of plant The equipment composition, etc. of this figure of a standard type applied commercially and differs slightly from that of the actual plant. 13
Slide 14: 3.2 Measurement methods and test results
3.2 Measurement methods and test results Monitoring of operational status Measurement methods Input data relating to flow rates, temperatures, pressures, etc. into a computer model is time sequence. Confirm the CO2 purity by gas measurement. Efficiency and capacity of CO2 recovery Test results The
Slide 15: 3.2 Monitoring of operational status: test results
3.2 Measurement methods and test results Monitoring of operational status Test results Performance values equivalent to or higher than the planned values could be obtained over the demonstration period(4000hours) for both the CO2 recovery efficiency and CO2 recovery capacity. 15
Slide 16: 3.2 Specific heat consumption for CO2 recovery
3.2 Measurement methods and test results Monitoring of operational status Test results Specific heat consumption required for CO2 Recovery 730~820 kcal/kg-CO2 The performance is almost the same as that for the natural-gas-fired boiler case. Recovered CO2 we expect to achieve a Heat Recovery furth
Slide 17: 3.2 Purity of the recovered CO2
3.2 Measurement methods and test results Monitoring of operational status Test results Purity of the recovered CO2 Commercial plant with a natural-gas- Demonstration plant with coal fired boiler fired boiler KM-CDR process achieved a high-purity equivalent to that of the natural-gas-fired boiler fo
Slide 18: Understanding the influence of dust: capture efficiency
Understanding the influence of dust Understanding the capture efficiency Measurement methods Measuring the dust concentrations in both the gas and liquid. 18
Slide 19: Influence of dust: capture efficiency results
Understanding the influence of dust Understanding the capture efficiency The result z The capture efficiency of dust 9Flue gas cooler : 40-50% 9Absorber : 50-60% z The filter removes dust from the solvent, and the dust concentration in the solvent does not increase. 19
Slide 20: Influence of dust on solvent: measurement methods
Understanding the influence of dust Influences on solvent Measurement methods zInteraction 9Among the amount of dust in a solvent 9The foaming tendency of the solvent 9The flooding phenomenon of the solvent zMeasure 9Measuring the dust concentration in the solvent 9Testing the solvent for the foami
Slide 21: Influence of dust on solvent: test results
Understanding the influence of dust Influences on solvent Test results The dust from the coal-fired boiler flue gas accumulated in the solvent and did not cause flooding. 21
Slide 22: Influence of dust on equipment: measurement methods
Understanding the influence of dust Influences on equipment Measurement methods Monitor the operational status of the equipment affected by dust. 22
Slide 23: Influence of dust on equipment: test results
Understanding the influence of dust Influences on equipment Test results Flue gas cooler pressure loss and absorber pressure loss 23
Slide 24: Influence of dust on equipment: test results
Understanding the influence of dust Influences on equipment Test results Flue gas cooler pressure loss and absorber pressure loss 24
Slide 25: Influence of dust on equipment: heat transfer coefficient
Understanding the influence of dust Influences on equipment Test results Heat transfer coefficient of the heat exchanger The heat transfer coefficient decreased in the heat exchanger using cooling water By the scaling of material in the cooling water (solved by appropriate water treatment.) 25
Slide 26: Understanding the influences of SOx
Understanding the influences of SOx Removal ratio in the flue gas desulphurization section Measurement methods Measuring the SOx concentration in the flue gas at the inlet of the flue gas at the outlet. Test results The SOx removal ratio in the flue gas desulphurization section: 98％ or higher 26
Slide 27: Influence of SOx on solvent
Understanding the influences of SOx Influence on solvent Measurement methods z Measure the concentration of the heat-stable salts in the solvent. Test results z Though almost all of the Sox at the outlet of the flue gas cooler was absorbed by the solvent and became heat-stable salts z The amounts
Slide 28: Understanding the influences of NOx
Understanding the influences of NOx Absorption ratio Test methods Measuring the NOx concentrations in the gas at the inlet and outlet of the absorber. Test results Absorption ratio-of NOx 9Flue gas cooler : almost none 9Absorption : 1-3 ％ 28
Slide 29: Influences of chlorine and fluorine
Understanding the influences of chlorine and fluorine Amounts accumulated Test methods Measure the concentrations of Cl(chlorine) and F(fluorine) in the waste water of the flue gas cooler and in the solvent Test results No Cl(chlorine) or F(fluorine) was detected in the flue gas or solvent Cl(chor
Slide 30: Confirmation of solvent loss
Confirmation of solvent loss Amount of solvent loss Test methods Determine the amount of solvent loss through analysis of the solvent. Test results zThe solvent loss measured was close to the expected value. zWe could assess the solvent loss quantitatively from the coal-fired boiler flue gas. Can
Slide 31: 4. Conclusion
4. Conclusion 31
Slide 32: 4. Conclusion
4.Conclusion The demonstration operation of 4000 hours was achieved at a coal-fired power station in Matsushima. We clarified the behaviors of dust, SOx, and NOx in the equipment systems and how these components influence the solvent. In conclusion We confirmed that KM-CDR process can be applied
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