Comparative Study of Two Identical Industrial Digesters Using Radiotracer-Based Residence Time Distribution Measurement

被引：2

作者：

Sheoran, Meenakshi ^{[1
]}

Chandra, Avinash ^{[1
]}

Gautam, Arvind Kumar ^{[2
]}

Arya, Raj Kumar ^{[3
]}

Bhunia, Haripada ^{[1
]}

Pant, Harish J. ^{[4
]}

机构：

[1] Thapar Inst Engin & Technol, Dept Chem Engn, Patiala 147004, Punjab, India

[2] Natl Inst Technol Hamirpur, Dept Chem Engn, Hamirpur 177005, Himachal Prades, India

[3] Dr BR Ambedkar Natl Inst Technol, Dept Chem Engn, Jalandhar 144011, Punjab, India

[4] Bhabha Atom Res Ctr, Isotope Prod & Applicat Div, Mumbai 400085, Maharashtra, India

来源：

CHEMICAL ENGINEERING & TECHNOLOGY | 2022年 / 45卷 / 03期

关键词：

Mean residence time; Pulping digester; Radiotracer; Residence time distribution; Wheat straw; AXIAL-DISPERSION; LIQUID-PHASE;

D O I：

10.1002/ceat.202100429

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Radiotracer-based residence time distribution (RTD) measurements were performed for two identical wheat straw pulping digesters to evaluate and compare their performances. The radiotracer technetium (Tc-99m) as sodium pertechnetate was used to follow the liquid phase inside the digester. The product quality of both digesters was not identical for similar sets of operating conditions. Temperature, pressure, and mass flow rates were the influencing parameters, and the experimental and theoretical mean residence time (MRT) were compared. A significant amount of flow abnormalities was observed in the second digester as compared to the first one, including channeling, dead volume, scaling, and bypassing. The axial dispersion model and tank in series with the back-mixing model were suitable for modeling the obtained RTD data.

引用

页码：479 / 488

页数：10

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