1.A.1.c Manufacture Of Solid Fuels And Other Energy Industries

Last updated on 10 Dec 2013 11:53 (cf. Authors)

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Source category 1.A.1.c - Manufacture Of Solid Fuels And Other Energy Industries includes hard-coal and lignite mining, coking and briquetting plants and extraction of crude oil and natural gas. Used-oil processing plants are also included. CO emissions from coking plants are reported in source catagory 1.B.1 Solid Fuels Subcatagory 1.B.1.b. - all the other pollutants are reported under source catagory 1.A.1.c.

NFR-Code Name of Category Method AD EF Key Source for (by)
1.A.1.c Manufacture of Solid Fuels and Other Energy Industries T2 NS CS SOx & NOx (T), TSP, PM10 & PM2.5 (T), Pb, Hg & Cd (T)

Method

Activity data

Fuel inputs for electricity production in power plants of the hard-coal and lignite mining sector are listed in Energy Balance line 12 "Industrial thermal power stations". Fuel inputs for heat production in the transformation sector are listed in Energy Balance lines 33-39.
Fuel inputs for electricity production in power stations of the hard-coal mining sector are determined with the help of figures of the Federal Statistical Office (DESTATIS). The activity rates for heat production in power stations of the hard-coal mining sector correspond to energy Balance line 34 "Energy input in pit and briquette plants of the hard-coal mining sector".
The listed fuel input for electricity and heat production in pit power plants is based on association information from DEBRIV (the federal German association of all lignite producing companies and their affliated organisations). Inputs for heat production, especially for lignite drying for production of lignite products, are not shown in the Energy Balance. Those are calculated from figures for production of lignite products (STATISTIK DER KOHLENWIRTSCHAFT) and from the specific fuel inputs required for dying from DEBRIV.
Energy consumption data for hard-coal coke production are provided by the Energy Balance line 33.
The fuel input for heat production in the remaining transformation sector is obtained by combining the energy consumption figures in Energy Balance lines 33 to 39 (total energy consumption in the transformation sector). These figures include the pits´own consumption, facilities for petroleum and natural gas production and for processing of old oil; plants that produce coal products; plants for production and processing of fissile and fertile materials; and wastewater-treatment facilities.

Emission factors

The emission factors for power stations and other boiler combustion for production of steam and hot water, in source catagory 1.A.1.c, have been taken from the research project "Determination and evaluation of emission factors for combustion systems in Germany for the years 1995, 2000 and 2010". A detailed description of the procedure is presented in Chapter: 1.A.1.a - Public Electricity And Heat Production.

Table: Implied emission factors for manfacture of solid fuels and other energy industry

Pollutant SOx NOx TSP CO Pb Hg Cd
Fuel [kg/TJ] [g/TJ]
Hard Coal 86 72 2 6.7 1.53 2.1 0.5
Lignite 128 90 4 42 1.18 3.12 0.13
Pit gas 2 118 0.3 72 NE NE NE
Coke oven gas 89 78 0.3 1.7 NE NE NE
Sewage sludge 2 29 0.5 2.2 3.2 2.4 0.34

The table gives an overview of the implied emission factors. In reality the German inventory compiling process is very complex and includes the use of a considerable number of emission factors, which cannot be published completely in the IIR. Actually there are different emission factors available for diverse fuel types, various techniques and licensing requirements. However, the implied emission factor may give an impression about the order of magnitude.
PM 10 and PM 2.5 emission factors are calculated as a fraction of TSP. The share of PM 10 is 90 % and the share of PM 2.5 is 80 %. This is a simple but also conservative approache, knowing that, in reality, PM emissions depend on fuel, combustion and abatement technologies. PM emission reporting starts in 1995, since no sufficient information about the dust composition of the early 1990th is available.
Emission factors of sewage sludge refer to mono-incineration, using fluidized-bed combustion. Emission factors of coke oven gas does not include underfiring systems of coking plants. The determination of emission factors of coking plants is described in the study: "Emissionsfaktoren zur Eisen und Stahlindustrie für die Emissionsberichterstattung" (VDEh 2010). Emission factors refer to the produced amount of coke, distinction is drawn between diffuse and channelled sources. The following graph gives an overview of the methodology:

Table: emission factors for coking plants (solely channelled sources)

Pollutant SOx NOx CO TSP PM10 NH3 BaP Benzene
Unit [g/t product] [µg/t product] [mg/t product]
220.5 529.9 828.2 25.9 12.1 1.9 7.2 36.2

Trend Discussion for Key Sources

The following diagrams give an overview and assistance for explaining dominant emission trends of selected pollutants.

Sulfur Oxides - SOx

The graph shows sharp declining SOx emissions between 1990 and 1995 due to decreasing lignite consumption as well as the implementation of stricter regulations in eastern Germany. In the former GDR lignite industry was of prime importance for the economy. After the reunification lignite briquette production in eastern Germany collapsed. The remaining factories had to install flue gas desulphurisation plants.

Nitrogen Oxides - NOx

NOx emissions descrease gradually from 1990 to 2001. The main reasons are the minor fuel use of lignite and of hard coal in this sector and the adaptation of regulations in eastern Germany to the western standard. Besides german hard coal production decreased considerably since 1990. Therefore some hard coal fired industrial power plants changed from sector 1.A.1.c to the public sector.

Total Suspended Matter - TSP & PM10Priority Heavy Metal - Pb & Hg & Cd

Priority Heavy Metal - Pb & Hg & Cd

Similar to SOx emissions, TSP and Priority Heavy Metal emission trends show a high dominance of emissions from lignite combustion. Like already discussed for other pollutant, the main reason for sharp declining emissions in this sector is the complete restructuring of the east german lignite industry. The low standard of dust abatement in eastern germany in the early 1990th involved high heavy metal emissions too. The closing of briquette factories and the imlementation fo strikter regulations resulted in a considerably improvement of the air quality especially in the New German Länder.

Recalculations

Recalculations were necessary for the latest reference year (2010) due to the availability of the National Energy Balance. Germany has a federal structure which causes a time lack of the National Energy Balance. Therefore recalculations are always necessary.
Further recalculations due to improvements of SOX emission factors of coal fired power plants.

For pollutant specific information on qualitative and quantitative impacts on 1990 and 2010 emission estimates see chapter 11. Recalculations.

Planned improvements

It´s planned to revise CO, TSP, PM10 and PM2.5 emission factors for all combustion plants.

Bibliography
1. National energy balance and Satellite balance for renewable energy: http://www.ag-energiebilanzen.de/viewpage.php?idpage=216
2. "Emissionsfaktoren zur Eisen- und Stahlindustrie für die Emissionsberichterstattung"; Michael Hensmann, Sebastian Haardt, Dominik Ebert (VDEh-Betriebsforschungsinstitut GmbH, Düsseldorf, Juli 2010), FKZ: 3707 42 301/01 und 3707 41 111/2; http://www.umweltdaten.de/publikationen/fpdf-l/4362.pdf
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