Page 12 - European Energy Innovation - Summer 2016 publication
P. 12

12  Summer 2016 European Energy Innovation


“Blackbox” cooling solution to

enhance Yara’s growth goals

Yara is the leading provider of sustainable crop nutrition solutions,
supporting farmer profitability through knowledge, optimal quality and
productivity. It has a leading position in nitrogen applications, and has
become a total solutions provider in the market for emission control
solutions. The Porsgrunn location, about 140 km southwest of Oslo
produces NPK and CN fertilizers.

NPK fertilizers are primarily             makes it the perfect synonym for the       because the solution was the focal
                composed of three main    fast-growth plans of Yara. As part of      point, and no stone was left unturned
                elements: Nitrogen (N),   this program the plant-management          in finding this solution. Bronswerk
                Phosphorus (P), and       has decided to increase the production     allocated all possible resources to
 Potassium (K), each essential in plant   capacity. One of the bottlenecks is the    conduct extensive research resulting
 nutrition. Nitrogen helps plants grow    cooling capacity of the plant during the   in a suitable (customized) solution.
 quickly, increases the production of     summer period.                             The difficulty in finding this solution
 seed and fruit, and betters the quality                                             lay in increasing the production
 of leaf and forage crops. Nitrogen is    STANDARD OPTIONS VS “BLACKBOX              performance while meeting the
 also a component of chlorophyll, the     OPTION”                                    demands and staying in compliance
 substance that gives plants their green  As standard solutions could not achieve    with the restrictions of Yara. The result
 color, and also aids in photosynthesis.  the required output temperature (i.e.      was an air-conditioning unit different
 Phosphorus, also a key player in the     as low as possible without having          from standard solutions in terms of
 photosynthesis process, supports         freezing problems) Bronswerk was           temperatures and allowable pressure
 the formation of oils, sugars, and       requested to prepare three customized      drops (see figure 1). These kinds of
 starches. Additionally, phosphorus       options in order to realize the preferred  challenges are perfectly suitable for
 encourages the growth of roots, and      air conditions. The main difference        Bronswerk: debottlenecking and
 promotes blooming. Potassium, assists    between the three options could be         revamping existing installations to
 in photosynthesis, fruit quality, the    found in the degree of compliance          improve the capacity within the actual
 building of protein, and the reduction   with the specifications. All of the        plot size limits keeping the original
 of disease. The production capacity of   three solutions would have the same        equipment in tact as much as possible!
 the plant is stated in table 1.          thermal performance, however the           These were exactly the reasons why
                                          “blackbox” option, which was chosen        Yara allowed Bronswerk to make their
 PORSGRUNN                                by Yara, would be the fastest and          process more sustainable.
 The company started the so called        most economical solution within the
 Bamboo project a couple of years ago.    project requirements. This option
 Bamboo is a fast growing plant, which    was called the black box option

Table 1: Production volumes Yara Porsgrunn site

Production volumes                        500,000 tons                               PROCESS OPTIMIZATION AND
Ammonia                                   1,350,000 tons                             SOLUTION
Nitric acid                               2,000,000 tons                             The proposed solution was especially
NPK                                       810,000 tons                               designed to meet the critical design
CN (as solids)                                                                       demands (to cool back washed
                                                                                     ambient air of a temperature of 13°
                                                                                     Celsius (100% RH) to a temperature

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