rob52
Shotfirer.
Posts: 199
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Post by rob52 on Feb 27, 2017 6:13:23 GMT -5
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rob52
Shotfirer.
Posts: 199
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Post by rob52 on Apr 14, 2017 18:58:09 GMT -5
Global CMM2014 CMM Australian Profile Pg17 “There are currently 25 CMM projects registered in Australia at 19 mines, 14 of which are active underground mines and 5 are abandoned mines. Nine of the projects involve flaring recovered gas; 10 projects generate electricity using reciprocating engines; three projects destroy VAM, two projects involve injection of high quality CMM into a sales pipeline, and there is one boiler fuel project (GMI,2014a).
Nine projects use CMM to generate 215 MW of electricity sold into the national grid, and the Clean Energy Future Plan has a goal of a five percent reduction on 2000 levels GHG emissions by 2020 (GMI –Australia, 2013). The largest CMM power station is located at BHP Billiton’s Appin andTower mines near Sydney. Commissioned in 1996, this project consists of 94 1-MW reciprocating engines and consumes 600,000 m3 of CMM a day. Other large power plants, built and operated by Energy Developments Ltd., include a 32MW project at the German Creek coal mine (uses 16 2MW engines and came on-line in November 2006) and the $60 million 45MW plant at Anglo’s Moranbah North coal mine (uses 15 3MW engines and started operation in late 2008). Both of these plants are located in the Bowen Basin in central Queensland (Energy Developments, 2010).
In one landmark CMM project, BHP Billiton was awarded up to $6 million from the Australian Greenhouse Office (AGO) to construct a CMM power station at the West Cliff Colliery, near Wollongong, NSW, to allow the combustion of very dilute methane contained in coal mine ventilation air (also known as VAM) (BHP, 2010). The West Cliff VAM Project (WestVAMP) officially opened on14 September 2007 and was the first to generate commercial power solely from VAM. The project burns 0.9 percent VAM concentration to produce 6 MW of electricity via a conventional steam turbine. Along with displacing coal-fired electricity generation, WestVAMP is estimated to reduce emissions by up to 0.250 million MTCO2e each year (MEGTEC, 2008; 2010). “
Rob
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rob52
Shotfirer.
Posts: 199
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Post by rob52 on Apr 14, 2017 19:05:54 GMT -5
2004 Report on CMM and Outburst ManagementFeb 2004 Pg18 Section 1.4 - "Most of the CMM used in China is distributed via pipelines to mining communities and neighbouring cities for domestic use, mainly cooking. Some CMM is used in colliery boilers and for small-scale power generation. Gas flows supplied to CMM utilisation schemes are typically in the range 5 to 100 million m3/a. The demand from domestic consumers varies widely both daily and seasonally, gas often being vented in summer."
2008 Jilin Liaoyuan Meihe Coal Mine CMM 3.5MVAJilin Liaoyuan Meihe Coal Mine 7 x 500kVA = 3.5MVA 2008 Sihe Coal Mine CMM 120MVAApril 15, 2008 2:23 PM ET “4.3 billion cubic meters of methane were captured in Chinese coal mines last year (2007)….That's a 26 percent increase over the previous year, thanks to government incentives. ”
Sihe Mine…state-run mine…houses the largest methane power plant in the world…Caterpillar, the company based in Lafayette, Ind., sold 60 gas engines to the coal mine for more than $50 million.
The plant produces 120 megawatts of capacity continuously"2010 Cat Pres on China CMM ProjectsOct 2010 Pg20 - Lists Cat CMM Units in China "2006 - 2009:,?> 250MW installations?
Assume 2.5MVA per Cat G3250C
Yangquan Huweigou: 3xG3520C (7.5MVA)
Jincheng Sihe: 60xG3520C (150MVA)
Jincheng Meiganshi: 21xG3520C (52.5MVA)
Jincheng Chengzhuang:10xG3520C (25MVA)
Huainan Pansan: 2xG3520C (5MVA)
Xiyang: 3xG3520C (7.5MVA)
Malan: 2xG3520C (5MVA)
Shaqu: 14xG3520C (35MVA)
SRET: 24xG3520C (60MVA)"The "Page Title - ?> 250MW installations?" looks suspect considering CAT G3520CCAT G3520C = 2500 to 3750 kVa per unit 2011 China CMMPg1 “The installed capacity of CMM power plants exceeded 1000MW.”Pg4 “The total drainage volume reaches 22 billion m3, among of which 10 billion m3 from surface wells, and 12 billion m3 from CMM drainage.“********** ********** WRT China...and Coal Mining & CH4...this was concerningPg20 "Unless exempted, explosion proof and intrinsically safe equipment cannot be used in a Chinese coal mine unless it carries the MA (Mei Anquan) mark. The Chinese standards are based on an outdated international standard EN5004 (1968) which not only hinders import of modern, safe, efficient mining equipment into China, but also deters Chinese manufacturers from modernising their designs and participating fully in international markets."Rob
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rob52
Shotfirer.
Posts: 199
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Post by rob52 on Apr 14, 2017 23:11:09 GMT -5
Some detail on Russia Jan 2014 Pre-feasibility Study for Coal Mine Methane Drainage and UtilizationPre-feasibility Study for Coal Mine Methane Drainage and Utilization at Alardinskaya and Uskovskaya Coal Mines Kuzbass Coal Basin, Russian Federatio Jan 2014 Pg13 “In 2009, 57 of Russia’s 98 underground coal mines were considered either “Category 3” mines, with methane emissions of 10 to15 cubic meters per ton (m3/t) of coal mined, or “Super Hazardous” mines, with methane emissions greater than15 m3/t. Of these mines, approximately 25 deployed degasification systems in 2009. “Pg14 "Russian Coal Production"Pg15 “Alardinskaya is mining at about 700 m depth with two longwall shearing machines, and Uskovskaya is mining at about 300 m depth with a single longwall machine. Both mines are producing about two million metric tons (MMT) of coal per year, and have specific emissions of approximately 35 m3 CH4 per metric ton of coal mined.” Pg19 “The coal measures in the Alardinskaya mine area are approximately 600 m thick and contain approximately 60 m of coal within 38 coal seams."
“Seam 6 - from 6.8m, Up to 10m thick, average 8.5m thick”
”Seam 3a - from 5.3m, Up to 8.3m thick, average 6.8m thick”"Long wall up to 5m thick leaving a coal floor"Pg20, Look at the profile of seam Dip..strata dip from 14 to 20 degrees. Pg48 “Alardinskaya mine viable for 3MW CMM" Generation Pg39 "Uskovskaya mine area are approximately 260 m thick and contain approximately 13 m of coal within six thick seams
only seam 50 is being mined at time of study 2.55MT per annum"
“Seam 50 - from 1.85m, Up to 3.55m thick, average 2.67m thick”Pg49 Uskovskaya mine “ventilation air heating system that is currently using coal-fired furnaces”The Alardinskaya and Uskovskaya coal mines are currently over-draining the boreholes, which results in air being drawn into the neck of the holes. Rob |
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