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Large Volume Inorganic Chemicals - Ammonia ... - ammk-rks.net

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Chapter 4EUR/yearWaste gas volume (Nm 3 /hour) 10000Operating time (hour/year) 8400SO 2 concentration of waste gas before emissionreduction (mg/Nm 3 )SO 2 concentration of waste gas after emissionreduction (mg/Nm 3 )1500500Reduction of SO 2 emissions (kg/hour) 10Extra investment costs (EUR) 580000Repayment on investment including interest(EUR/year)59900 59900Period of depreciation (year) 15Interest rate (%) 6Extra costs of maintenance and wear (EUR/year) 11650 11600Maintenance and wear (% of investment costs) 2Extra costs for catalyst (incl. 6 % interest rate) 13450Extra amount of catalyst (m 3 ) 16Lifetime of catalyst (years) 10Specific costs of catalyst EUR 6200/m 3Recovered sulphuric acid (kg/hour) 15 EUR 0.051/kg -6550Estimated annual costs (EUR/year) 78400Specific costs related to reduction of SO 2 emissions (EUR/tonne SO 2 ) 930Basis: inlet concentration of 2 % v/v SO 2 , waste gas volume of 10000 mg/Nm 3 , increase of theconversion rate from 98 to 99.5 %.Table 4.13: Cost estimate for retrofitting a single contact plant with a Cs-promoted catalyst[57, Austrian UBA, 2001]180 <strong>Large</strong> <strong>Volume</strong> <strong>Inorganic</strong> <strong>Chemicals</strong> – <strong>Ammonia</strong>, Acids and Fertilisers

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