엑서지 해석에 근거한 분별증류 및 수소첨가알킬제거 공정의 에너지 이용 개선 방안

정연수; Yonsoo Chung

Clean Technology, Vol.12, No.2, 95-100, June, 2006

Export Citation

엑서지 해석에 근거한 분별증류 및 수소첨가알킬제거 공정의 에너지 이용 개선 방안

Suggestions for Energy Utilization Improvement of Fractionation and Hydrodealkylation Units Based on Exergy Analysis

정연수 ^†

서울시립대학교 공과대학 화학공학과, 130-743 서울특별시 동대문구 전농동 90

Yonsoo Chung^†

Department of Chemical Engineering, University of Seoul, 90 Jeonnong-dong, Tongdaemun-gu, Seoul 130-743, Korea

E-mail:

초록

엑서지 개념을 이용하여 BTX 공정의 일부인 분별증류 및 수소첨가알킬제거 공정에 대한 열역학적 해석을 실시하였다. 공정에 화학반응이 관계되는 까닭에 엑서지 값은 물리적 엑서지와 화학적 엑서지의 합으로서 구했으며 모든 계산은 공정의 조업자료를 바탕으로 한 전산 모사의 결과를 기반으로 하였다. 엑서지 손실을 구동 엑서지와 물질 엑서지 손실로 구분하여 정의하고 각각의 값을 구하였으며 그 결과를 바탕으로 공정의 에너지 이용 개선방안을 제시하였다. 엑서지 해석을 통해 공정의 내부에서 손실되는 엑서지 정확한 양과 그 위치를 파악할 수 있었으며 엑서지 해석이 산업생태학 개념의 이용과 손실방지책 연구를 위한 기초가 될 수 있음을 확인할 수 있었다.

Fractionation and hydrodealkylation (HDA) units, subparts of BTX plant, were thermodynamically analyzed using the notion of exergy. Exergy values were calculated as the sum of physical and chemical exergies due to the existence of chemical reactions. The analysis was based on the simulation results with the aid of real operating data. Driving and material exergy losses were separately defined and quantified. Locations and the reason of major exergy losses were identified and improvement strategies were suggested. It was noted that the exergy analysis could provide a sound base for adopting the concept of industrial ecology and developing loss prevention schemes.

Keywords:thermodynamic analysis;exergy;BTX plant;fractionation unit;hydrodealkylation unit

[References]

Rosen MA, Dincer I, Int. J. Energy Res., 21, 643 (1997)
Sussman MV, “Availability (Exergy) Analysis: A Self Instruction Manual,” 2nd ed., Mulliken House, Lexington, 1981, pp.I.2-I.27
Kotas TJ, “The Exergy Method of Thermal Plant Analysis,” 2nd ed., Krieger Publishing Company, U.S.A., 1995, pp.32-50
Lucca G, "The Exergy Analysis : Role and Didactic Importance of a Standard Use of Basic Concepts, Terms and Symbols," Proc. of A Future For Energy (Flowers ’90), Pergamon Press, 295 (1990)
Kotas TJ, Raichura RC, Mayhew YR, “Nomenclature for Exergy Analysis. In second Law Analysis of Thermal Systems,” Am. Soc. of Mech. Eng., 171 (1987)
Szargut J, Morris DR, Steward FR, “Exergy Analysis of Thermal, Chemical, and Metallurgical Processes,” Hemisphere, New York, 1988, pp.297-313
Cho HE, “Thermodynamic Analysis of a BTX Plant Based on Exergy,” Master's Thesis, Department of Chemical Engineering, University of Seoul (2001)
Reid RC, Prausnitz JM, Poling BE, “The Properties of Gases and Liquids,” 4th ed., McGraw-Hill, New York, 1986, pp.656-732
AspenTeck, “Physical Property Methods. Steady State Simulation ASPEN PLUS 10,” Elan, California, 1999, pp.2.1-2.18
Hinderink AP, Kerkhof FPJM, Lie ABK, De Swaan Arons J, Van Der Kooi HJ, Chem. Eng. Sci., 51, 20 (1996)
O’Rourke D, Connelly L, Koshland CP, Int. J. Environ. Pollut., 6, 2 (1996)

[Related Articles]

[1] Rosen MA, Dincer I, Int. J. Energy Res., 21, 643 (1997)

[2] Sussman MV, “Availability (Exergy) Analysis: A Self Instruction Manual,” 2nd ed., Mulliken House, Lexington, 1981, pp.I.2-I.27

[3] Kotas TJ, “The Exergy Method of Thermal Plant Analysis,” 2nd ed., Krieger Publishing Company, U.S.A., 1995, pp.32-50

[4] Lucca G, "The Exergy Analysis : Role and Didactic Importance of a Standard Use of Basic Concepts, Terms and Symbols," Proc. of A Future For Energy (Flowers ’90), Pergamon Press, 295 (1990)

[5] Kotas TJ, Raichura RC, Mayhew YR, “Nomenclature for Exergy Analysis. In second Law Analysis of Thermal Systems,” Am. Soc. of Mech. Eng., 171 (1987)

[6] Szargut J, Morris DR, Steward FR, “Exergy Analysis of Thermal, Chemical, and Metallurgical Processes,” Hemisphere, New York, 1988, pp.297-313

[7] Cho HE, “Thermodynamic Analysis of a BTX Plant Based on Exergy,” Master's Thesis, Department of Chemical Engineering, University of Seoul (2001)

[8] Reid RC, Prausnitz JM, Poling BE, “The Properties of Gases and Liquids,” 4th ed., McGraw-Hill, New York, 1986, pp.656-732

[9] AspenTeck, “Physical Property Methods. Steady State Simulation ASPEN PLUS 10,” Elan, California, 1999, pp.2.1-2.18

[10] Hinderink AP, Kerkhof FPJM, Lie ABK, De Swaan Arons J, Van Der Kooi HJ, Chem. Eng. Sci., 51, 20 (1996)

[11] O’Rourke D, Connelly L, Koshland CP, Int. J. Environ. Pollut., 6, 2 (1996)