Pollutant Information: Hydrogen Chloride 

About Hydrogen Chloride

Category: Air pollutants

Hydrogen chloride (HCl) is an acidic gas primarily released to air from combustion of fuels which contain trace amounts of chloride. This results in the emissions of HCl being dominated by the combustion of solid fuel. Emissions have fallen by 96% since 1970 as a result of the decline in coal use and the installation of flue gas desulphurisation at various coal-fired power stations since 1993. The impact of the miners' strike of 1984 is clearly visible in the time series of HCl emissions. The other significant source of hydrogen chloride used to be waste incineration. Here the commissioning of new incinerators and the closure or upgrading of old plants have resulted in a large decrease in emissions for all years since 1996.

» View and Download Hydrogen Chloride emission summary data

Time series graph


Notable events

Start year End year Sector Information Impact
1984 1985 Public Electricity and Heat Production Miners strike resulting in a reduction in the consumption of coal in power stations for that year. Decrease in emissions
1990 2014 Public Electricity and Heat Production Decline in the use of coal in energy production and the installation of flue gas desulphurisation at Drax and Ratcliffe power stations since 1993 Decrease in emissions

Hydrogen Chloride contributes to the following...

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