无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2020, Vol. 52 ›› Issue (11): 95-98.doi: 10.11962/1006-4990.2019-0645

• 化工装备与设计 • 上一篇    下一篇

热法磷酸水化塔热平衡及热利用效率分析计算

王政伟(),李晓博,梁慧力,李佩萤   

  1. 常州大学,江苏常州 213164
  • 收稿日期:2020-05-18 出版日期:2020-11-10 发布日期:2020-12-01
  • 作者简介:王政伟(1961— ),男,教授,硕士生导师,主要从事热能利用和节能技术的教学科研工作;E-mail: 2570791833@qq.com
  • 基金资助:
    江苏省研究生科研与实践创新计划项目(SJX18_0966)

Analysis and calculation of heat balance and heat utilization efficiency in hydration tower of thermal phosphoric acid

Wang Zhengwei(),Li Xiaobo,Liang Huili,Li Peiying   

  1. Changzhou University,Changzhou 213164,China
  • Received:2020-05-18 Online:2020-11-10 Published:2020-12-01

摘要:

针对现有热法磷酸二步法水化塔存在余热未被利用的问题,提出水化塔余热利用方案及装置。根据能量平衡得到水化塔的能流图,建立水化塔的热平衡方程式,得到水化塔的热效率正反平衡、塔内换热量、产汽量和各项热损失的计算式,分析了提高水化塔热利用效率的技术措施,并进行实例计算。

关键词: 热法磷酸, 水化塔, 热平衡, 热利用效率

Abstract:

Aiming at the problem that the waste heat of the hydration tower of two-step thermal phosphoric acid process was notutilized,a waste heat utilization scheme and device for the hydration tower was proposed.According to the energy balance,the energy flow chart of the hydration tower was obtained,and the heat balance equation of the hydration tower was established.The calculation formula of the thermal efficiency positive and negative balance of the hydration tower,the heat exchange amount in the tower,the steam production and various heat losses were obtained.Technical measures to im-prove the heat utilization efficiency of the hydration tower were analyzed and an example calculation was conducted.

Key words: thermal process phosphoric acid, hydration tower, heat balance, heat utilization efficiency

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