Abstract

Industrial experiments show that it is expedient to treat the recirculation loop in primary gas-cooling units with a corrosion and scale inhibitor based on zinc, phosphonate, and polymer dispersants, so as to eliminate salt deposits on the equipment surfaces and to prevent the solution of the heat-transfer surfaces. The effectiveness of such treatment is confirmed by calculating the quantity of deposited Ca²⁺ ions at different stages of the experiment. Treatment by the reagent at a rate of 5.0–6.6 kg/h (recalculated for CaCO₃) prevents the formation of calcium deposits. In addition, the increase in the concentration of suspended material in the circulating water when the reagent is supplied indicates the formation of suspended adsorption complexes of calcium carbonate, which are not deposited on the heat-transfer surfaces. The results show that the temperature difference of the cooled gas and the cooling water in the primary gas-cooling units may be decreased by 1.0–1.5°C. That compensates for the increase in enthalpy of the coke-oven gas, including the increase associated with the high content of gas coal in the batch.

中文翻译：

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调整煤气含量高的批次的焦炉气的一次冷却

摘要

工业实验表明，使用基于锌，膦酸酯和聚合物分散剂的腐蚀和阻垢剂处理一次气体冷却装置中的再循环回路是很方便的，这样可以消除设备表面的盐沉积并防止溶液溶解。传热表面。通过计算实验不同阶段沉积的Ca ²⁺离子的量，可以确认这种处理的有效性。试剂以5.0–6.6 kg / h的速度处理（对于CaCO ₃重新计算）可防止钙沉积物的形成。另外，当供应试剂时，循环水中悬浮物质浓度的增加表明形成了碳酸钙的悬浮吸附复合物，其没有沉积在传热表面上。结果表明，一次气体冷却装置中的冷却气体和冷却水的温差可降低1.0–1.5°C。这补偿了焦炉煤气的焓增加，包括与批料中高含量的煤气相关的增加。