(BAT) Reference Document for the Production of Chlor-alkali ...

Chapter 4
approximately EUR 1000/t annual Cl2 capacity. The investment costs for a conversion thus
represent 20 – 60 % of the investment costs of a new plant [ 232, Euro Chlor 2010 ].
Table 4.5: Investment costs for the conversion of a mercury cell plant with a chlorine capacity
of 100 kt/yr and a design current density of 5 kA/m 2
Cost object
Investment costs
in EUR/t annual Cl2 capacity
Minimum Maximum
Cell room and electric supply (5 kA/m 2 ) 69 227
Peripherals (electrolytes circuits) 10 16
Caustic concentration (3 effects)
Intermediate buffer tank
Brine circuit
Polishing filters
Hardness removal
Dechlorination
Chlorate removal
Sulphate removal
33 50
10
Chlorine circuit (liquefaction) 27
Hydrogen cooling 2
Cooling water 7
Total for equipment and installation 140 403
Engineering 36 51
Proratable and start-up costs 10 28
Miscellaneous (10 %) 18 45
Escalation and financial costs 10 26
Total conversion 214 553
NB: Costs for decommissioning of the old mercury cell plant and costs for replacement or
refurbishing of other equipment are not included.
Source: [ 232, Euro Chlor 2010 ]
A conversion from mercury cells to membrane technology is presented in Table 4.7 and a
comparison of reported conversion costs is presented in Table 4.8.
WORKING DRAFT IN PROGRESS
Table 4.6 shows examples of investment costs ranging from EUR 190 – 670/t annual Cl2
capacity for conversions carried out between 1992 and 2009.
156 December 2011 TB/EIPPCB/CAK_Draft_1
11
14
3
15
20
4
10
15