Legislation

Emissions Limits

Emission limit values after the 1. BImSchV
Emissions limits for biomass firing plants after TA Luft (Clean Air Legislation)
Overview of the regulations after BImSchG and the emission limit values for untreated wood
Overview of the regulations after BImSchG and the emission limit values for straw

Emission limit values after 1. BImSchV
Fuel	Nominal heat achievement in kW	Oxygen reference value in %	Emission limit values
			Dust ^a	CO ^a	Waste gas plume
			in g/Nm³	in g/Nm³	Grey tone
Natural wood	< 50	13	0,15	4,0	more bright 1
	50 - 150			2,0
	150 - 500			1,0
	> 500			0,5

Wood, painted, paints,	^b 100	13	0,15	0,8	more bright 1
coated, plywood,	100 - 500			0,5
Chip boards, fiber boards	> 500			0,3
as well as their remainder without
halogeneous-organic
Coatings and
Wood preservatives

Straw or the like	^c < 50	13	0,15	4,0	more bright 1
vegetable materials	50 - 100			2,0

Abbreviations:

BImSchG: Federal Emission Control Law

1. BImSchV: First regulation for the execution of the BImSchG (regulations for small firing plants)

CO: Carbon monoxide

Nm³: Standard cubic meter, exhaust gas at standard temperature and pressure with 0° C and 1013 mbar with indicated oxygen reference value

Footnotes:

a Dust and CO limit only during nominal heat output> 15 kW

b Not applied during a nominal heat output< 50 kW

c Not applied during a nominal heat output < 15 kW

Emission limits for biomass firing plants after TA Luft ^a
		Emission limit value	Note
Oxygen reference value	in Vol.-%	11

Dust	in g/Nm³	0,15	FWL < 5 MW
	in mg/Nm³	50	FWL >= 5 MW

Carbon monoxide (CO)	in g/Nm³	0,25	with FWL < 2.5 MW only with nominal load

Organic materials (entire CC)	in mg/Nm³	50

Nitrogen oxides indicated as	in g/Nm³	0,3	stat. WS > 20 MW and zirk. WS
(NO₂)		0,4	other plants (natural wood, straw)
		0,5	other plants

Sulfur dioxides (SO₂)	in g/Nm³	2

Abbreviation:

TA Luft: Technical guidance for the keeping clean of air

stat. WS: stationary fluidized bed

zirk. WS: circulating fluidized bed

Nm³: Standard cubic meter, exhaust gas at standard temperature and pressure with 0° C and 1013 mbar with indicated oxygen reference value

FWL: Firing thermal output

Footnote:

a with consideration of the Dynamisierungsklauseln of the land committee for emission control (LAI)

Overview of the regulations after BImSchG and the emission limit values for untreated wood

Equipment performance		Licensing	Relevant	Oxygen reference	Emission limit values
		procedures	Regulation	value	Dust	CO	Ges.-C	NO_X	SO₂
				in Vol.-%	in g/Nm³
FWL < 1 MW		not	1. BImSchV	13
	NWL <= 50 kW	subject			0,15	4	-	-	-
	NWL 50 - 150 kW	to			0,15	2	-	-	-
	NWL 150 - 500 kW	approval			0,15	1	-	-	-
	NWL > 500 kW				0,15	0,5	-	-	-
FWL 1 - 50 MW		vereinf. Verf.	TA Luft	11
	FWL < 5 MW	(§ 19 BImSchG)			0,15	0,25	0,05	0,4	2
	FWL >= 5 MW				0,05	0,25	0,05	0,4	2
FWL >= 50 MW		förml. Verf.	13.BImSchV	in accordance with 13. BImSchV (large firing regulation; usually not relevantly for biomass)
		(§ 10 BImSchG)

Abbreviation:

FWL: Firing thermal output, NWL: Nominal heat output

Overview of the regulations after BImSchG and the emission limit values for straw

Equipment performance		Licensing	Relevant	Oxygen reference	Emission limit values
		procedures	Regulation	value	Dust	CO	Ges.-C	NO_X	SO₂
				in Vol.-%	in g/Nm³
FWL < 1 MW		not	1. BImSchV	13
	NWL <= 50 kW	subject			0,15	4	-	-	-
	NWL 50 - 150 kW	to			0,15	2	-	-	-
	NWL 150 - 500 kW	approval			0,15	1	-	-	-
	NWL > 500 kW				0,15	0,5	-	-	-
FWL 1 - 50 MW		vereinf. Verf.	TA Luft	11
	FWL < 5 MW	(§ 19 BImSchG)			0,15	0,25	0,05	0,4	2
	FWL >= 5 MW				0,05	0,25	0,05	0,4	2
FWL >= 50 MW		förml. Verf.	13.BImSchV	in accordance with 13. BImSchV (large firingregulation; usually not relevantly for biomass)
		(§ 10 BImSchG)

Abbreviation:

FWL: Firing thermal output, NWL: Nominal heat output

Footnote:

a 15 not applicable during a nominal heat output < kW

Source:

Fichtner GmbH & Co. KG
Projektbereich Erneuerbare Energien (Project Area Renewable Energies)
Sarweystraße 3
70191 Stuttgart
Germany