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Separated dual system and production method for preparing sulfuric acid and co-producing cement from phosphogypsum
The invention discloses a separated dual system and a production method for preparing sulfuric acid and co-producing cement from ardealite. The separated dual system comprises a phosphogypsum pyrolysis acid-making system and a cement clinker calcining system. The separated phosphogypsum pyrolysis device is adopted, and the phosphogypsum pyrolysis sulfuric acid preparation system and the cement clinker calcination system are separated, so that an operator can adjust working conditions at any time according to different pyrolysis environments required by phosphogypsum and other cement raw materials; the risk of crust blockage of the decomposition furnace caused by a large amount of liquid phase generated by overhigh pyrolysis temperature required by the phosphogypsum is avoided, and the quality of cement clinker is ensured while the decomposition rate of the phosphogypsum is improved; meanwhile, the universality of the ardealite is improved, and the concentration of SO2 in the obtained acid-making flue gas is not less than 8%.
本发明公开了一种磷石膏制备硫酸联产水泥的分离式双系统和生产方法。该分离式双系统包括磷石膏热解制酸系统和水泥熟料煅烧系统。本发明采用分离式的磷石膏热解装置，并将磷石膏热解制硫酸系统和水泥熟料煅烧系统分离开，使得操作人员可以根据磷石膏和其他水泥生料所需不同的热解环境随时调整工况，避免了由于磷石膏所需热解温度过高产生大量液相致使分解炉发生结皮堵塞的风险，在磷石膏分解率提高的同时，保证水泥熟料的质量；同时，提高了磷石膏的普适性，并使所得制酸烟气中SO2浓度不小于8％。
Separated dual system and production method for preparing sulfuric acid and co-producing cement from phosphogypsum
The invention discloses a separated dual system and a production method for preparing sulfuric acid and co-producing cement from ardealite. The separated dual system comprises a phosphogypsum pyrolysis acid-making system and a cement clinker calcining system. The separated phosphogypsum pyrolysis device is adopted, and the phosphogypsum pyrolysis sulfuric acid preparation system and the cement clinker calcination system are separated, so that an operator can adjust working conditions at any time according to different pyrolysis environments required by phosphogypsum and other cement raw materials; the risk of crust blockage of the decomposition furnace caused by a large amount of liquid phase generated by overhigh pyrolysis temperature required by the phosphogypsum is avoided, and the quality of cement clinker is ensured while the decomposition rate of the phosphogypsum is improved; meanwhile, the universality of the ardealite is improved, and the concentration of SO2 in the obtained acid-making flue gas is not less than 8%.
本发明公开了一种磷石膏制备硫酸联产水泥的分离式双系统和生产方法。该分离式双系统包括磷石膏热解制酸系统和水泥熟料煅烧系统。本发明采用分离式的磷石膏热解装置，并将磷石膏热解制硫酸系统和水泥熟料煅烧系统分离开，使得操作人员可以根据磷石膏和其他水泥生料所需不同的热解环境随时调整工况，避免了由于磷石膏所需热解温度过高产生大量液相致使分解炉发生结皮堵塞的风险，在磷石膏分解率提高的同时，保证水泥熟料的质量；同时，提高了磷石膏的普适性，并使所得制酸烟气中SO2浓度不小于8％。
Separated dual system and production method for preparing sulfuric acid and co-producing cement from phosphogypsum
一种磷石膏制备硫酸联产水泥的分离式双系统和生产方法
ZHAO QINGLIN (author) / ZHOU SHANGQUN (author) / LI FUZHOU (author) / LONG QUANMING (author) / ZHOU MINGKAI (author)
2022-07-22
Patent
Electronic Resource
Chinese
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