การรีเจนเนอเรทถ่านกัมมันต์ที่ใช้แล้วด้วยไอน้ำ

The Regeneration of Spent Activated Carbon by Steam

Name: สุภภร ศรสุวรรณ

Name: Supaporn Sornsuwan

Organization : มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

keyword: Adsorption

; Desorption

; Activated carbon

; Regeneration

; Toluene

; Steam

Abstract: This experimental work was to study the regeneration of spent activated carbon by steam. It was divided into two parts, the first part was the regeneration of the carbon in bench-scale adsorption column by using steam which the pressure varied in the range of 0.5 – 3.0 bar gauge. The column was 8 cm. diameter and 60 cm. long, made of stainless steel and wrapped with insulator. It was found that, during the regeneration the carbon bed temperature increased until it reached the steam temperature (heated-up period). Then toluene vapor was desorbed from the internal pore of the activated carbon. The percent recovery of toluene was depended strongly on the steam temperature. Higher steam temperature was used, higher amount of toluene was recovered. The maximum percent recovery was about 90% where as 10% was left as the heel. The desorption rate could be predicted by Kreb and Smith equation which gave the E0= 363.75 kJ/mol , ?o= 1.88?10 4 /min, C1 = 0.11 and C2= 106.2 (for the temperature range from 100-143?C ). The second part was to study the adsorption and desorption cycle by using saturation steam at 100?C in lab-scale glass column (2.5 cm. diameter and 35 cm. long). The result showed that, in the first cycle, adsorption had a long breakthrough time and became shorter until it reached the constant value in the following cycles. The adsorption capacity (We) and the adsorption rate constant (kv) calculated from Yoon and Nelson equation decreased with the cycle of operation. It was also noted that in the first cycle the amount of toluene adsorbed was more than that desorbed. This amount decreased continuously in the next following cycles until it reached the same amount that desorbed.

มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

Address: กรุงเทพมหานคร

Email: info.lib@mail.kmutt.ac.th

Name: วิทยา เทพไพฑูรย์

Role: อาจารย์ที่ปรึกษา

Created: 2546

Issued: 2006-03-07

Modified: 2560-08-03

วิทยานิพนธ์/Thesis

ISBN: 9741836104

CallNumber: CHE1452

tha

DegreeName: วิศวกรรมศาสตรมหาบัณฑิต

Level: ปริญญาโท

Descipline: วิศวกรรมเคมี

Grantor: มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

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ลำดับที่.	ชื่อแฟ้มข้อมูล	ขนาดแฟ้มข้อมูล	จำนวนเข้าถึง	วัน-เวลาเข้าถึงล่าสุด
1	CHE1452.pdf	12.63 MB	126	2022-04-10 20:21:27
2	CHE1452ab.pdf	122.77 KB	59	2018-05-10 16:28:04
3	CHE1452ab.txt	1.98 KB	28	2018-05-10 16:28:05

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