การเปรียบเทียบการผลิตเซรามิกส์โดยใช้พลังงานความร้อนที่ได้จากเตาก๊าซซิไฟเออร์แบบ Updraft และ Downdraft

A comparison of the ceramic production by producer gas from Updraft and Dowdraft Gasifier

Name: วิภาวรรณ แสงสง่า

Name: Wipawan Sangsa-nga

Organization : มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

keyword: Ceramic kiln

; เตาเผาเซรามิก

Abstract: The study of the producer gas process for ceramics firing by updraft gasifier was carried out in this work and the experimental results were compared with the ceramic products obtained by downdraft gasifier. The rubber wood was used as fuel for this process. The gasifier was 0.309 m3 in volume and the airflow was fed at three different flow rates at a constant temperature and pressure at 30 OC and 1 atm, respectively. The results showed that the fuel consumption rate increased with increasing air flow rate. The fuel consuinption rate of these three different flow rates, 3.0x10-3, 4.0x10'-3 and 5.0x10-3 m3/s, were 9,10.79 and 18 kglhr, respectively. The CO gas produced were approximately 26.79, 31.78, 29.55 % and the average heating values of gases were 4072.32,4391.87, 3857.35 k~/Nm~, respectively. The data showed that the appropriate flow rate the producer gas was 4.0x10-~ m3/s due to contributing the highest heating value. The earthenware tiring was conducted in two different firing processes, biscuit and glost firing. Biscuit firing was fired in updraft and downdraft gasifiers. The producer gas were in good agreement with the typical temperature profiles and the ceramic products showed a good quality production, which can be used for the coating process, similar to the ceramic from the factory. For Glost firing, it was found that the final temperatures and the firing times for updraft and downdraft gasifiers were approximately at 1185.6 and 1102 OC, and 600 and 540 minutes, respectively. The ceramics obtained by updraft gasifier process presented a similar shape andcolor as the products from the factory. On the other way, the ceramics produced by downdraft gasifier process were as under firing products. Terra cotta firing was conducted under one time firing method by updraft and downdraft gasifiers. The experiments were in good agreement with the temperature profile of the firing. The ceramic products appeared in the same features and sizes as the factory products. The difference was only the clay color. Ceramic products from this research found to be lighter color and less pattern than the manufacturing products. This may be due to the difference of the components of the producer gas and LPG gas. However, by the physical property this still can be used as the general products manufactured by the factory. The experimental results showed that, at the same air flow rate, the producer gas by updraft gasifier yielded higher heating value and liquid tar than the producer gas from downdraft gasifier. It can be concluded that the producer gas by updraft gasifier is better to be used as fuel for the ceramics firing process and some other industries.

มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

Address: กรุงเทพมหานคร

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

Name: รัตนชัย ไพรินทร์

Role: อาจารย์ที่ปรึกษา

Name: สมเกียรติ ปรัชญาวรากร

Role: อาจารย์ที่ปรึกษา

Created: 2544

Issued: 2007-01-31

Modified: 2560-03-21

วิทยานิพนธ์/Thesis

ISBN: 9746287605

CallNumber: ET491

tha

eng

DegreeName: วิทยาศาสตรมหาบัณฑิต

Level: ปริญญาโท

Descipline: เทคโนโลยีพลังงาน

Grantor: มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

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