Division BAT 37 In order to prevent or reduce NOX emissions to air from the combustion of gas oil in gas turbines, BAT is to use one or a combination of the techniques given below.

United Kingdom

Technique	Description	Applicability
a.	Water/steam addition	See description in Section 8.3	The applicability may be limited due to water availability
b.	Low-NO_X burners (LNB)	Only applicable to turbine models for which low-NO_X burners are available on the market
c.	Selective catalytic reduction (SCR)	Not applicable to combustion plants operated < 500 h/yr. There may be technical and economic restrictions for retrofitting existing combustion plants operated between 500 h/yr and 1 500 h/yr. Retrofitting existing combustion plants may be constrained by the availability of sufficient space

Technique

Description

Applicability

Water/steam addition

See description in Section 8.3

The applicability may be limited due to water availability

Low-NO_X burners (LNB)

Only applicable to turbine models for which low-NO_X burners are available on the market

Selective catalytic reduction (SCR)

Not applicable to combustion plants operated < 500 h/yr.

There may be technical and economic restrictions for retrofitting existing combustion plants operated between 500 h/yr and 1 500 h/yr.

Retrofitting existing combustion plants may be constrained by the availability of sufficient space