[1]刘 麟,吕星星,陈 程,等.卧式螺旋沉降离心机粉煤气化灰水的脱水分析与优化[J].常州大学学报(自然科学版),2019,31(06):52-59.
　LIU Lin,LYU Xingxing,CHEN Cheng,et al.Analysis and Optimization of Dewatering for Coal Gasification Ash Water in Decanter Centrifuge[J].Journal of Changzhou University(Natural Science Edition),2019,31(06):52-59.
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卧式螺旋沉降离心机粉煤气化灰水的脱水分析与优化()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
第31卷
期数:
2019年06期
页码:
52-59
栏目:
石油与天然气工程
出版日期:
2019-11-28

文章信息/Info

Title:
Analysis and Optimization of Dewatering for Coal Gasification Ash Water in Decanter Centrifuge
文章编号:
2095-0411(2019)06-0052-08
作者:
刘 麟1; 2; 吕星星1; 陈 程1; 刘雪东1; 2; 郭文元3; 巢建伟1; 2
(1.常州大学 机械工程学院,江苏 常州 213164; 2.常州大学 江苏省绿色过程装备重点实验室,江苏 常州 213164; 3.中石化宁波工程有限公司,浙江 宁波 315103)
Author(s):
LIU Lin1; 2;  LYU Xingxing1;  CHEN Cheng1;  LIU Xuedong1; 2;  GUO Wenyuan3;  CHAO Jianwei1; 2
(1.School of Mechanical Engineering, Changzhou University, Changzhou 213164, China; 2.Jiangsu Key Laboratory of Green Process Equipment, Changzhou University, Changzhou 213164,China; 3.Sinopec Ningbo Engineering Co., Ltd., Ningbo 315103, China)
关键词:
卧螺离心机;  粉煤气化灰水;  数值模拟;  分离;  结构优化
Keywords:
decanter centrifuge;  coal gasification ash water;  numerical simulation;  separation;  optimal design
分类号:
TQ 028.5
文献标志码:
A
摘要:
为了探究适用于粉煤气化灰水的脱水卧式螺旋沉降离心机的结构形式,采用计算流体力学仿真的方法,对卧式螺旋沉降离心机固液分离进行数值模拟。基于现有卧式螺旋沉降离心机进行三维模型建立,对离心机内部不同位置粉煤气化灰水的含水率进行分析,探究其针对粉煤气化灰水的分离特性。研究了转鼓转速、转鼓锥角以及螺旋推进器螺距对排料口粉煤气化灰水的含水率影响。结果表明,卧式螺旋沉降离心机模型内部的粉煤气化灰水的含水率沿左侧大端排液口向右侧小端出料口逐渐降低。在现有卧式螺旋沉降离心机结构形式中,采用2 000 r/min的转速能在较低的能耗下获得较小的含水率,并且通过将现有卧式螺旋沉降离心机转鼓锥角α增大1°～2°,能进一步降低粉煤气化灰水的含水率,而维持螺旋推进器螺距现有尺寸能够保证卧式螺旋离心机的出料口低含水率以及很好的输送沉渣能力。
Abstract:
In order to explore the structure of decanter centrifuge, which is suitable for the dehydration of coal gasification ash water, the numerical simulation of the solid-liquid separation for coal gasification ash water was carried out by the method of computational fluid dynamics simulation. Based on the structure of the decanter centrifuge, a three-dimensional model was established to analyze the water content of the coal gasification ash water in different positions of the centrifuge, and then the separation characteristics of the coal gasification ash water were investigated. The influence of drum rotation rate, drum cone angle and screw propeller pitch on the moisture content of coal gasification ash water at the outlet was studied. The results showed that the water content of coal gasification ash water in the decanter centrifuge model decreases gradually from left to right. In the existing structure of decanter centrifuge, the speed of 2 000 r/min could be used to obtain a smaller water content at lower energy consumption. Moreover, the water content of coal gasification ash water could be further reduced by increasing taper angle α of the existing decanter centrifuge by 1°～2° to optimize the structure. Finally, maintaining the existing pitch size of the screw propeller can ensure low water content and good sediment transport capacity.

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备注/Memo

备注/Memo:
收稿日期:2019-05-08。
基金项目:国家自然科学基金资助项目(51601021, 51671037); 中国石化股份有限公司重点研发计划资助项目(417002); 江苏省高校自然科学研究重大项目(17KJA460002)。
作者简介:刘麟(1983—),男,河南南阳人,博士,副教授。通信联系人:刘雪东(1965—), E-mail:lxd@cczu.edu.cn
更新日期/Last Update: 2019-12-02