The development of a neutralizing amines based reagent for maintaining the water chemistry for medium and high pressures steam boilers M V Butakova, K A Orlov and O V Guseva Abstract. An overview of the neutralizing amine based reagent AMINAT PK-2 usage for water chemistry of steam boilers for medium pressure boiler was given. Long term experiment showed that new reagent allows to decrease corrosion rate comparing with old water chemistry based on ammonia only. Two dosage schemes in different cycle places discussed. Scheme with two points on injection showed better results. Results of corrosion rates experiments and photos of tubes inner surfaces are presented. Based on fuel savings due to reducing scale formation the total annual economy for last year was 5.1 million Russian roubles.

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Implementation of the program of import substitution considered on the example of pilot tests (PT) of reagents produced by NPF Travers LLC. The existing water chemistry of steam boilers and heat recovery steam boilers of RN-Tuapsinsky Oil Refinery LLC gas-turbine power plant is organized with the use of complex reagent Helamin BWR-150H. Considering the advantages and disadvantages of complex reagents for the organization of water chemistry, it was proposed to conduct PT of reagents AMINAT KO-4 based on a mixture of polyphosphates to prevent scale formation on heat transfer surfaces and AMINAT PK-2 based on mixtures of neutralizing amines to prevent carbon dioxide corrosion. The article presents the results of the PT, which showed that the correctional water chemistry of boilers using reagents AMINAT ensured the maintenance of the regulatory requirements of the regime maps of the equipment, as well as minimizing the processes of corrosion, scale formation and sludge formation during the entire period of work. Based on the results obtained, conclusions were drawn on the technical and economic feasibility of using these reagents.