Heat exchanger for carbomide-ammonium mixtures

Control and regulation of the temperature regime in the production of urea-ammonia fertilizers is of particular importance. When mixing water and bulk fertilizers, an endothermic reaction occurs with a large heat absorption. The main task is to maintain the temperature in a strictly defined narrow range. The heat exchanger for carbomide-ammonia mixtures is designed for heating solutions and suspensions of nitrogen fertilizers. As a heat source, the heat from a diesel-fueled burner is used. The heat exchanger receives a slurry( solution) of fertilizer and the heat from the burner is heated to the temperature set by the technological mode. The parameters of the heat exchanger: - burner type: diesel; - burner control: remote; - case material: stainless steel; - material of heat exchanger tubes: stainless steel; - capacity, kW / h: 300; - input and output of the heated medium is carried out in the heat exchanger through:; - heated medium: solutions and suspensions of nitrogen fertilizers; - pH of the heated medium (hydrogen index): from 5.5 to 9; - corrosion activity of the heated medium: high to non-ferrous metals and carbon steels, causing their corrosion. - minimum temperature of the heated medium at the inlet, ° C: minus 24 ° C; - maximum temperature of the heated medium at the outlet, ° C: from minus ten to minus 20 ° C.