无机盐工业

无机盐工业 ›› 2008, Vol. 0 ›› Issue (11): 0-0.

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磷酸沉淀法制备白炭黑绿色工艺研究

黄飞,李军,尚书勇,黄传寿,阮勤,谢秩清   

  • 出版日期:2008-11-10 发布日期:2008-11-10

Green process of white carbon black preparation by phosphoric acid deposition method

Huang Fei,Li Jun,Shang Shuyong,Huang Chuanshou,Ruan Qin,Xie Zhiqing   

  • Online:2008-11-10 Published:2008-11-10

摘要: <FONT face=Verdana>摘要:研究了利用磷酸沉淀法双釜反应绿色工艺制备白炭黑并联产三聚磷酸钠。反应器Ⅰ终点控制在pH=9、温度70 ℃;反应器Ⅱ终点控制在pH=4、温度90 ℃。对白炭黑产品物理化学指标测试表明,产品已达橡胶配合剂质量技术标准,其中,DBP吸收值为2.06~2.74 cm<SUP>3</SUP>/g,氮吸附比表面积为206~313 m<SUP>2</SUP>/g,达A类标准。采用逆向循环、间歇式5级压滤洗涤工艺,有利于回收磷酸盐、节约用水和降低能耗。经生产实践证明,该工艺运行稳定,操作简单,环境污染小,充分实现了工艺绿色化。<BR>中图分类号:TQ127.2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 文献标识码:A&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 文章编号:1006-4990(2008)11-0037-03<BR><BR></FONT>

Abstract: White carbon black was prepared and sodium tripolyphosphate was by-produced by double-reactor green-process phosphoric acid deposition method.The end-point of reactor I was controlled at pH=9 and temperature=70 ℃;The end-point of reactor II was controlled at pH=4 and temperature=90 ℃.The physical and chemical index testing showed that the performance of white carbon black product has reached the quality standard of rubber ingredients.Furthermore,the DBP absorption value was 2.06-2.74 cm<SUP>3</SUP>/g and nitrogen absorption surface area was 206-313 m<SUP>2</SUP>/g,which reached Class A standard.Reverse cycle and intermittent five-washing filter technology was adopted.Therefore,it was conducive to the recovery of phosphate,to save water and reduce energy consumption.It is confirmed by practical production that this technology had stable running,simple operation,small environmental pollution, and the green process was fully realized.