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采用氨酸法工艺生产复混(合)肥,需要大量w(H2SO4)约60%的稀硫酸。原用搪玻璃反应釜间歇式将w(H2SO4)98%的浓硫酸稀释成所需稀硫酸,存在诸多问题。介绍用石墨冷却器连续式将浓硫酸稀释的工艺流程、工艺指标、节能降耗效果,满足了氨酸法生产对稀硫酸的需要。
The use of acid production process compound (combined) fertilizer, requires a lot of w (H2SO4) about 60% of the dilute sulfuric acid. The original use of glass-lined reactor batch will w (H2SO4) 98% concentrated sulfuric acid diluted to the required dilute sulfuric acid, there are many problems. Describe the continuous process of using graphite cooler to dilute concentrated sulfuric acid process, process indicators, energy saving effect, to meet the needs of acid production of dilute sulfuric acid.