PJSC “ArcelorMittal Kryviy Rih” – reconstruction of the converter shop with replacement of gas cleaning units

PJSC “ArcelorMittal Kryvyi Rih” revamping of the BOF shop with GCPs’ replacement

Specialists of the JSC "E&TE" Ukrenergochermet" boiler and water-treatment plants take part in the project of the converter shop      revamping with the replacement of gas cleaning plants for PJSC" ArcelorMittal Kryviy Rih".

At this stage of the investment project implementation our specialists are solving the following tasks:

- Analysis of the converter gases water cooler (CGWC) existing technological schemes and main process equipment characteristics, including the open-loop circulating cooling system of converter gases;
- Analysis of the converter shop second unit CGWC converters design documentation;
- Visual and instrumental inspection of the CGWC converters and converter’s shop second unit technical conditions for the purpose of revealing the shortcomings of the system operation;
- Analysis of the main process equipment residual period of operation, including the caisson, the CGWC cooling ring;
- Analysis of the open-loop gas cooling circulating system working capacity of the converters;
- Analysis of the pumping station operation, after the reconstruction of the converter’s gas cleaning plant (GCP);
- Recommendations for the revamping of the converter's gas cleaning plants.

Reference Information: PJSC “ArcelorMittal Kryvyi Rih” revamps BOF shop with GCPs’ replacement

Kryvyi Rih, 14 August 2014. PJSC “ArcelorMittal Kryvyi Rih” invests $83 mln in revamp of BOF shop and construction of new GCPs behind BOFs 4-6. PJSC “ArcelorMittal Kryvyi Rih” constructs primary gas cooling and cleaning system in BOF shop with implementation of automated environmental monitoring system. This investment project implementation provides an opportunity for PJSC “ArcelorMittal Kryvyi Rih” to reduce the emissions of pollutants into the air by 2.7 ktpa.

The revamp is aimed at updating BOF steelmaking process – shifting from full BOF gas combustion to suppressed one. This technology facilitates the decreasing of industrial load on environment and will reduce the power consumption by 5 mln kW. Furthermore, GCPs’ revamp (behind BOFs) will help to improve the quality of water supplied to the shop and increase the blowing rate and thus ensuring the BOFs’ performance enhancing. The expected benefit from construction of closed-loop BOFs’ cooling circuit is water flow rate reduction by 100m3/h.

Luis Querubim, chief project engineer (BOF GCPs), I&PM department, PJSC “ArcelorMittal Kryvyi Rih”: «As the largest company of Mining and Steelmaking complex of Ukraine we bindingly work for reducing our impact on the environment. The production efficiency and implementation of projects aimed at environment protection are the priority for our investment programs and AMKR development strategies. The extensive revamp of BOF shop and installation of GCPs behind all the BOFs will allow reducing the water flow rate and power consumption what will result of products’ cost decreasing and competitive growth of PJSC “ArcelorMittal Kryvyi Rih” under tough situation of steelmaking area. However, the main benefit from implementation of this investment project is considerable reduction of pollutants’ emissions in the environment since it is extremely important both for Kryvyi Rih and the entire region where PJSC “ArcelorMittal Kryvyi Rih” facilities are in operation”.

The BOF shop revamp scopes envisage the replacement of all the process equipment. In particular, it is planned the following: the construction of two-stage scrubber (the main cleaning is performed in it), as well as the construction of new gas ducts, ID fan house and flare stack for gas combustion. The boosting pump house will be also constructed along with six gas analyzer rooms for gas composition analysis since it is required for both process and environmental indicators’ control. At the moment N2 letdown station is constructed. The installation of flare stack and ID fan house is in progress. The foundations for gas ducts and E-room are arranged, as well as foundation pits for boosting pump house and for hydraulic room for lower hood travelling control.