Simultaneous desorption-crystallization of CO2-CaCO3 in multi-stage flash (MSF) distillers

被引：21

作者：

Al-Rawajfeh, Aiman Eid ^{[1
]}

机构：

[1] Tafila Tech Univ, Dept Chem Engn, Tafila 66110, Jordan

来源：

CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION | 2008年 / 47卷 / 12期

关键词：

Modeling; MSF distillers; CO2; desorption; CaCO3 scale formation; Fouling resistance;

D O I：

10.1016/j.cep.2007.12.004

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

In this work, the desorption-crystallization of CO2-CaCO3 in MSF distillers was simulated by coupling mass transfer with chemical reaction and correlating the CaCO3 crystallization rates to the CO2 release rates. The model was applied to two 20-stage reference MSF once-through and recycles distillers. The CO2 release rates decreased exponentially from the first stage to the last stage. The CO2 release rates increased with increasing top brine temperature (TBT) and so CaCO3 deposition rates did. The CaCO3 deposition rates increased by 76.9, 102.5 and 123.0 g per ton distillate at 90, 100 and 110 degrees C, respectively. This corresponded to fouling resistance of 0.64, 0.83 and 1.00 m(2)K/kW, respectively. The results were fully discussed and interpreted. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：2262 / 2269

页数：8

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