Soft Measurement Modeling about Operation Characteristic Parameters of BoosterExpansion Turbine for Cryogenic Air Separation Unit Based on the Regression Method
[1]LlU Chao-feng,ZHAO Wei,YIN Yong-huai,et al.Soft Measurement Modeling about Operation Characteristic Parameters of BoosterExpansion Turbine for Cryogenic Air Separation Unit Based on the Regression Method[J].Journal of Zhengzhou University (Engineering Science),2015,36(03):92-95.[doi:10.3969/ j. issn.1671 -6833.2015.03.020]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
36
Number of periods:
2015 03
Page number:
92-95
Column:
Public date:
2015-06-30
- Title:
- Soft Measurement Modeling about Operation Characteristic Parameters of BoosterExpansion Turbine for Cryogenic Air Separation Unit Based on the Regression Method
- Keywords:
- cryogenic air separation unit; booster expansion turbine; operating parameters; soft measurementmodeling
- CLC:
- TB653
- DOI:
- 10.3969/ j. issn.1671 -6833.2015.03.020
- Abstract:
- According to expansion air flow,expansion-side inlet pressure,inlet temperature of expansion side,expansion side outlet temperature,boost pressure and expander outlet end speed associated with operatingcharacteristics of booster expansion turbine for cryogenic air separation unit,research about soft sensor model-ing methods is conducted.Regression mathematical models from the operating data of unit 1" and 2* being de-bugged for an oxygen company are estimated and predicted for operation characteristic parameters relationship. The results indicate that the accuracy of the mathematical model is better,precision mathematical model con-sisting of nine equations resulting in at least more than 98 % . The proposed method can be used to: predict theexpansion end-side outlet temperature by expansion of the air flow,the expansion end of inlet pressure and theexpansion inlet temperature; estimate expansion side flow by expander end inlet temperature,the expansionoutlet temperature,and expansion side inlet pressure; predict speed by expansion side flow,expansion sideinlet pressure and expander end inlet temperature;predict booster end outlet pressure by speed;predict ex-pansion side inlet pressure by booster end outlet pressure.
- References:
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