Alkane Energy UK ltd

Transcription

1 Alkane Energy UK ltd Monitoring Report 01 Utilisation of Coal-Mine-Methane "Mansfield Toray" Monitoring Period 10/2006 to 12/2007 Project Site: Mansfield Energy Park Toray Textiles Europe ltd Crown Farm Way Forest Town Mansfield Nottinghamshire NG19 0FT Prepared by Carbon-TF B.V. Date: July 2008, revised November 2009

2 1 PROJECT CHARACTERISTICS Coal Mine Gas (CMM) is an unavoidable occurrence of hard coal mining. CMM mainly consists of the harmful greenhouse gas methane with a GWP of 21 [IPCC- 96]. Even after the shut down of the mining activities, CMM escapes for many years through open shafts and cracks and fissures in the overburden, directly or diffusely, into the atmosphere. In this project CMM, which has been sucked out of the shut down Mansfield Colliery, has been utilised in two cogeneration units of Alkane Energy UK ltd and boilers of the Toray Textile Europe ltd. In both cases methane has been burned to less harmful CO 2. The cogeneration units have produced power, which has displaced conventionally produced power in the power grid of UK and therefore saved an additional amount of CO 2. This amount is not taken into account due to the regulations of the European Union Emissions Trading Scheme EUETS. Here after these emission reductions belong to the main power producers of the grid. The boilers of the Toray Textile factory have produced heat, which has displaced conventionally produced heat in the heating system of Toray Textiles Europe ltd and therefore saved an additional amount of CO 2. The CO 2 equivalent of the saved amount of natural gas has been taken into account. Because CMM is not included in the national allocation plan of the UK, this project can not be installed as a JI-Project. Nevertheless all amount of emission reductions generated by the project since the beginning down to present day should be monitored for the purpose of the verification as Verified Emission Reductions (VER). Project developer s name and address Company name Address Zip code + city postal address Country Contact person Job title Alkane Energy UK ltd Edwinstowe House, High Street Edwinstowe, Nottinghamshire, NG21 PR United Kingdom Mr. David Oldham Technical Director

3 Telephone number +44 (0) Fax number +44 (0) address Corresponder Company name Carbon-TF B.V Address Horsterweg 221 Zip code + city address Country Contact person Job title 5928 ND Venlo-Blerrick Netherlands Mr. Dr. Jürgen Meyer Director Business Development Telephone number +49 (0) Fax number +49 (0) address jm@carbon-tf.com Alkane Energy UK ltd is a company, which develops CMM utilisation projects and operates CMM plants. Carbon-TF B.V. is a Dutch Emissions Trading company and is consultant for Alkane Energy UK ltd. Chronological sequence: The project started in March 2006 The borehole was completed in May 2006 The initial start up date with gas feed to Torays boilers was on The operation of the first cogeneration unit started on The second cogeneration unit was put on-line on The PDD has been written by Carbon-TF B.V. in June 2007, final version from Febraury 2008 [PDD]. Validation of the project has been finished in February 2008 [TÜV-Nord Cert GmbH].

4 2 STATEMENT TO WHAT EXTENT THE PROJECT HAS BEEN IMPLEMENTED AS PLANNED The CMM utilisation plant Mansfield Toray has been installed at the Mansfield Energy Park in Mansfield, UK, as described in the PDD [PDD]. The plant is in operation since October At present both cogeneration units and the gas feed to Toray Textile Europe ltd are in operation. Photos of the plant are attached in annex 2. 3 TECHNICAL DATA Description of technology The plant consists of two identical gas engines with the following data: Table 3-1: Technical data of the gas engines Manufacturer Number / formation of cylinders Cylinder capacity Rotational frequency Capacity (electrical power) Deutz 16 / V 70.8 dm³ 1,500 1/min 2 x 1.35 MWel total 2.7 MWel Table 3-2: Types of measurements Sold electricity CMM amount to gas engines CMM amount to Toray boilers CH 4 - CH 4 - NMHC Electricity meter turbine meter turbine meter on-site infrared measurement weekly lab analysis weekly lab analysis Classification Number of the meter ELSTER A 1700 K1720 K06D00707 Main Meter K1720 K06D00708 Check Meter ELSTER ELSTER Instromet Q-75-K DN200 Instromet Q-75-K DN200 Data Method Manufacturer Installation April 06 April Crowcon Vortex TES Bretby Laboratory TES Bretby Laboratory lab analysis lab analysis

5 All meters are clearly identifiable and have not been changed since installation. The electricity meters have been provided by Western Power Distribution (South West) plc. This company is the owner of the meter and is responsible for maintenance and calibration. The CMM turbine meters have been provided by Alkane Energy UK ltd. This company is the owner of the meters and is responsible for maintenance and calibrations, which should be carried out by the manufacturer (Elster GmbH). The on-site CH 4 meter has been provided by Alkane Energy UK ltd. This company is the owner of the meter and is responsible for maintenance and calibrations, which are carried out by Pro2 Farley Services ltd, a subsidiary of Alkane Energy plc. For bills the monthly lab analysis carried out by TES Bretby is taken. TES Bretby is an approved laboratory. For the determination of the CH 4 -concentation a gas chromatograph (GC) is taken. TES Bretby is responsible for the correctness of the analysis and maintenance of the GC. Installation documents and all necessary data are stored by the plant manager of Alkane Energy UK ltd. Photos of the meters are attached in annex 2. 4 EMISSION REDUCTIONS The monitoring period lasted from October 2006 to December The following table shows the measured values for methane sent to gas engines, methane sent to Toray s boilers, sold electricity, sold methane and resulting CO 2 reductions. Table 4-1: emission reductions year months CO 2 reduction [t CO 2eq ] BE MR BE Use BE PE ER ct-Dec 10, ,698 1,496 10, Jan-Dec 104, ,239 14,619 93,620 total 115, ,937 16, ,822 Detailed data have been handed over to the verifier - TÜV-Nord CERT GmbH

6 5 MEASURES TO ENSURE THE RESULTS / RESPONSIBILITIES The consistency, correctness and completeness of the monitored data is checked monthly by Alkane Energy UK ltd with support from Pro2 Farley Services ltd and Carbon-TF B.V.. Recorded data, operational journals and annual reports are archived by Alkane Energy UK ltd and Pro2 Farley Services ltd. Alkane Energy UK ltd is the operator of the CMM utilisation plants and is responsible for the: Operation Management Data recording Emission reductions monitoring Calculation of the emission reductions Verification of the emission reductions by an independent entity The plant manager can control operational data at any time via internet. Pro2 Farley Services ltd, a subsidiary of Alkane Energy plc, is mainly responsible for the operation, maintenance and service of the cogeneration units and the CMM supply. The related recorded data and operational journals are stored and archived at the headquarter of service and main control centre in Markham. Carbon-TF B.V. supports Alkane Energy UK ltd in the monitoring, calculation and verification process.

7 Table 5-1: Collected data Data Unit Method Frequency of Measurement on-site methane Methane NMHC CMM amount to cogeneration units CMM amount to Toray Textiles Vol. % Vol. % Infraredmeasurement Infraredmeasurement Source Responsible continuous Measurement Alkane Energy UK ltd weekly lab analysis TES Bretby Vol. % GC weekly lab analysis TES Bretby m³/h m³ m³/h m³ Flow measurement turbine meter Flow measurement turbine meter continuous and cumulative values continuous and cumulative values Sold electricity MWh power meter monthly readings Sold gas m³ turbine meter continuous Measurement measurement cumulative value cumulative value Alkane Energy UK ltd Alkane Energy UK ltd Western Power Distribution Alkane Energy UK ltd MWh calculation using flow measurement and CH 4 lab analysis monthly cumulative value based on the measurements The continuous on-site methane measurement unit is used as control measurement for the plant operation. The indication is sufficient for the plant operation, for bills the more accurate lab analysis is taken. The experience of Alkane Energy UK ltd shows that changes in the CH 4 appears in long terms, so that a monthly lab analysis is sufficient. The measurement value of the flow meters is automatically transformed to standard state conditions (15 C, kpa, as defined by ISA, ISO 13443, EEA and EGIA) using internal pressure and temperature measurements and the standardised value is stored. The amount of methane destroyed by the cogeneration units as measured by the flow meter, has been counterchecked with the amount of electricity produced for plausibility. All collected data is read out daily per remote data transmission to Alkane Energy UK ltd and stored. All data, the stored as well as the actual data and also the complete

8 plant overview can be checked at any time via internet. The plant manager can control these data at any time by intranet access. If an error occurs at the plant, an alarm message is sent to the system. This message can be seen at any place which is actually logged in on the system. In the service headquarter in Markham also acoustic and optic signals are set. The operation manager on duty has to quit them after the error is eliminated. The plant manager gets the accordant alarm message per SMS on his mobile phone. Table 5-2: Uncertainties and calibrations Data Methane Methane NMHC Uncertainty level of data (high/medium/ low) medium low low Calibrations, calibration intervals The on-site measurement unit is mainly used for plant control and operation. The indication of the gas analyser is drifting, and has to be recalibrated periodically by Pro2 Farley Service ltd. The weekly lab analysis, which is carried out monthly by TES Bretby, has a much better accuracy. TES Bretby is responsible for the maintenance and calibration of the analyser. The weekly lab analysis, which is carried out monthly by TES Bretby, has a much better accuracy. TES Bretby is responsible for the maintenance and calibration of the analyser. Sold electricity low Last calibration: April 2006 Calibration by Western Power Distribution. CMM amount to cogeneration units CMM amount to Toray s boilers Records used: low low The turbine meter is a high accuracy, low maintenance unit. The meter should be reconditioned and calibrated every 10 years by the manufacturer Elster GmbH. The turbine meter is a high accuracy, low maintenance unit. The meter should be reconditioned and calibrated every 10 years by the manufacturer Elster GmbH. List of monitored parameters (prepared by Alkane Energy UK ltd) Test reports of TES Bretby (stored by Alkane Energy UK ltd) Bills to Western Power Distribution (South West) plc (prepared and stored by Alkane Energy UK ltd) Bills to Toray Textile Europe ltd (prepared and stored by Alkane Energy UK ltd) Installation and calibration documents (stored by Alkane Energy UK ltd) Operation journal (stored by Pro2 Farley Service ltd) Annual reports (stored by Alkane Energy UK ltd)

9 6 DEVIATIONS FROM THE MONITORING PLAN The deviations from the monitoring plan established in the PDD are listed below: 1) The frequency of measurement as defined in the PDD as continuous has been in fact recorded in a 15 minutes cycle. The 15 minutes cycle provides an optimum of significant recorded data respective a reduced amount of data which has to be stored and archived. 2) The produced electricity has not been recorded electronically. To keep conservative the sold electricity has been taken into account instead. 3) The amount of the sold electricity is counted by two redundant meters, a main meter and a check meter. In case of deviation in the indications of the meters the lower value is taken into account. 4) In the monitoring plan two more data are listed to be monitored: Temperature of the CMM Pressure of the CMM These measurements of temperature and pressure are supposed to be used for the transformation of the CMM flow to standard state conditions. Both measurements are included in the flow meter, and the indication value is automatically corrected, so that the indication of the flow meter shows always the value at standard state conditions. The values of temperature and pressure are not stored separately. 5) The CH 4 - has been recorded continuous as stated in the PDD. Additionally a more accurate monthly lab analysis is carried out. The results of this lab analysis have been taken into account for bills of Alkane Energy and also for the calculations in this monitoring report. 7 ANNEX 1 - REFERENCES [PDD] [TÜV-Nord] Project Design Document; July 2007, last Version [PDD] Validation Report on the project: Utilisation of coal-mine-methane Mansfield Toray ; Report No: /43 by TÜV Nord CERT GmbH, dated 2008-February-27

10 8 ANNEX 2 PHOTOS All photos are made by Carbon-TF B.V.: Mansfield Toray CMM utilisation plant cogeneration units and transformers

11 CMM supply, gas filters CMM borehole and trip

12 Plant overview and operation panel in the control room Electricity meters, main and check meter

13 CMM flow meters CMM flow meters, type plates

14 9 ANNEX 3 OBTAINED PARAMETERS Table 1: Obtained Parameters Alkane Energy UK Limited - Carbon Records for Mansfield Sep '06 - Dec '07 Mansfield Gensets Sep 06 Okt 06 Nov 06 Dez 06 Jan 07 Feb 07 Mrz 07 Apr 07 Mai 07 Jun 07 Jul 07 Aug 07 Sep 07 Okt 07 Nov 07 Dez 07 Monthly Volume (M 3 ) Total Volume (M 3 ) Monthly Electricity Generated (MWh) Total Generated (MWh) CH 4 on site analyser (average) 0,0% 0,0% 0,0% 66,5% 68,8% 69,8% 75,4% 74,5% 75,7% 74,6% 73,5% 71,2% 73,7% 72,2% 70,1% 70,2% CH 4 lab sample * (average) 0,0% 0,0% 0,0% 73,0% 73,0% 74,0% 73,0% 73,5% 73,0% 72,5% 72,0% 75,0% 74,5% 74,0% 73,0% 72,0% Vacuum Absolute Kpa (average) 0,00 0,00 0,00 96,56 96,11 95,93 86,29 81,46 84,28 85,91 89,67 85,80 85,30 79,40 80,15 84,83 Mansfield Boiler Monthly Volume (M 3 ) Total Volume (M 3 ) Monthly Energy (MW)* ,1 Total Energy (MW)* Totals for the Site Monthly Total Volume Cumulative Totals Commentary *Energy Scaling Value = 0, *CH4 sample taken weekly and analysed in the laboratory (to derive the chemical MW equivalent)

15 Table 2: Calculation Table Gas data Mansfield Gensets Mansfield Boiler Totals for the project Month CH 4 lab NMHC PCCH4 PCNMHC r CEFNMHC VCMM,ELEC GEN CH 4 on site MMELEC MDELEC VCMM,HEAT MMHEAT MDHEAT CMM CH4 BEMR BEUSE BE PE ER Vol% Vol % Mass % Mass % tco2eq/tnmhc [m³] [MWh] [Vol %] [t] [t] [m³] [t] [t] [m³] [t] [t CO2eq] [t CO2eq] [t CO2eq] [t CO2eq] [t CO2eq] Sep % Oct % , , , , ,334 Nov % , , , , ,951 Dec % , % , , , , ,917 Sum % , % , ,047, , ,698 1,496 10,202 Jan % , % , , , , ,567 Feb % , % , , , , ,349 Mar % ,420 1, % , , , ,286 1,249 8,038 Apr % ,390 1, % , , , ,941 1,342 8,599 May % ,000 1, % , , , ,882 1,340 8,541 Jun % ,920 1, % , , , ,788 1,331 8,457 Jul % ,009 1, % , , , ,945 1,212 7,733 Aug % ,090 1, % , , , ,487 1,295 8,192 Sep % ,820 1, % , , , ,040 1,219 7,821 Oct % ,360 1, % , , , ,435 1,411 9,024 Nov % ,980 1, % , , , ,900 1,342 8,558 Dec % ,030 1, % , , , ,959 1,217 7,742 Sum % ,359,926 19, % 3,660 3,642 2,693,811 1,340 1,333 10,053,737 5, ,476 3, ,239 14,619 93,620 Total % ,684,731 20, % 3,820 3,801 3,416,173 1,692 1,684 11,100,904 5, ,184 4, ,937 16, ,822