Scrubbing sulphur dioxide emissions from fertiliser plant

A new installation to clean the factory’s flue gases will improve air quality and enable Poland to meet its EU environmental commitments.

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The project involves the construction of a wet ammonia-based flue-gas desulphurisation plant, as well as the systems required to operate the technology and a new stack.

Cleaner air for local population

Zakłady Azotowe Puławy (Pulawy Nitrogen Plant) in eastern Poland is a major producer of nitrate fertiliser and the world’s largest producer of melamine. Opened in 1966, it started operating a combined heat and power plant (CHP) in 2008.

The project to add a flue-gas desulphurisation plant using ammonia will reduce sulphur dioxide emissions from the plant by 1 743 Mg/year. This will improve air quality around the plant in Puławy, a town of some 50,000 inhabitants, and the surrounding area.

The works will adapt five of the plant’s boilers to meet Polish emissions standards, help Poland to meet EU commitments as set out in the 2001 Directive on emissions from large combustion plants, and allow the plant to conform with the requirements of EC law, including requirements regarding the use of Best Available Technologies.

Ammonia-based systems deliver high-value by-product

The process of ‘scrubbing’ flue gases of harmful sulphur dioxide can be achieved with a choice of input products, including limestone or ammonia. This particular project employs water and ammonia, which reacts with the sulphur dioxide to give ammonium sulphate, a high-value by-product that can be commercialised as a soil fertiliser. For every unit of ammonia used in the process, four times the quantity of ammonium sulphate is produced.

Extensive works programme

An extensive programme of works is required to prepare for the new installation, including the demolition and dismantling of a compressor building and a number of storage buildings, as well as a steel smoke stack and several building foundations.Among the new structures planned, besides the desulphurisation plant itself will be various storage buildings, a new stack, access roads and pavements, the electrical system to run the new plant, and the underground infrastructure to incorporate the new plant in the existing CHP system.

Total and EU funding

The project “Construction of Wet Ammonia-Based Flue-Gas Desulphurisation Plant at Zakłady Azotowe Puławy” has a total eligible budget of EUR 50 100 735, of which the EU’s European Regional Development Fund will contribute EUR 5 565 604for the 2007-2013 programming period.

Draft date