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现有小磷铵装置可以扩大能力。磷酸工段扩大能力应以盘式过滤机的生产能力为基准，增加料浆冷却器和养晶槽之后使其能力达到３万吨／年Ｐ２Ｏ５。磷铵工段扩大能力应该以喷浆造粒干燥机的生产能力为基准，可以用高速氨化蒸发器代替槽式中和器，将料浆加热器面积增至１００ ｍ ２／台，提高喷浆造粒干燥机进口温度，使其达到５５０～６００℃，则尾气净化系统仍可使用，相应的磷酸一铵生产能力可以达到５～６ 万吨／年。
Existing small ammonium phosphate plant can expand capacity. The expansion capacity of the phosphoric acid section should be based on the production capacity of the disc filter. After adding the slurry cooler and the crystal tank, the capacity will reach 30,000 tons / year of P2O5. Ammonium phosphate plant expansion capacity should be shotcrete granulation dryer production capacity as a benchmark, you can use high-speed ammoniation evaporator instead of trough neutralizer, the slurry heater area increased to 100 m 2 / unit, to improve the shotcrete Granulation dryer inlet temperature, so that it reaches 550 ~ 600 ℃, the exhaust gas purification system can still be used, the corresponding monoammonium phosphate production capacity can reach 5 to 60,000 tons / year.