GPA TP-5-1978 Relation of Liquid-Liquid Equilibrium Behavior at Low Temperatures to Vapor-Liquid Equilibria Behavior at High Temperatures and Elevated Pressures《低温时液液平衡状态和高温高压下汽液平衡.pdf

1、c :g the formation of multiple phases at some lower temperatures with the behavior persisting to much higher temperatures. This paper is a discussion of these ideas. Several projects have been involved, through the years, some partially sponsored by GPA. During that time, these projects have been un

2、der the guidance of the GPA K Value Steering Committee headed by Chairman Lyman Yarborough, Amoco Production Co.; John Sweny, Allied Chemical Corp.; K. H. Kilgren, Chevron Research Co.; Dan Forbes, Continental Oil Co.; Doug Elliot, McDermott Hudson Engineering; M. G. Kesler, Mobil R and Donald I. Gr

3、anicher, Stears-Roger Corp. The GPA extends its thanks to all those, both in the university and in industry, that participated in this project. Carl B. Sutton, Secretary i GPA TP-5 78 I 3824679 0010748 3Y2 Table of Contents Foreword i Table of Contents . i Abstract 1 Scope . 2 Conclusion and Signifi

4、cance . 3 K-Value and Phase Behavior Observed in the Methane-Toluene System 4 Natural Gas-Heavy Absorber Oil System Behavior 5 Acknowledgement . 8 List of References 9 Table 1 . 11 List of Figures . 12 ii GPA TP-5 78 Ea 3824699 0010949 289 H ABS TRACT Lhe significance and frequency DE occurrence of

5、niulti-hase equilibrium behavior in calmlations ap- -1icabie to 2etroleum reservoir calculations, oil and gas scirface sroduction practices, and to the petro- chemical industry have been recognized over the years. Recently phase behavior studies conducted on binary systems in our laboratory at low t

6、emperatur2s chca that multiphase vapor-liquid-liquid equilibria have a great deal of influence on the vapor-liquid eouilihria be- havior at nuch higher temperatxre and eievated ?res- sures. Ccnversely it has Seer. shown that several sulti- component systems simulating natural gas-crude oil and natur

7、al gas - absorber oil systems for which experi- mental i(-valces have been obtained indicate that mulfi- ?hace vapor-liquid-liqui2 equilibria axist at some lower temperatures. Some of these systems were stzdied at higher temperatures almost forty years ago. A corollary statement would be that existi

8、fic; Sroad- ranqed thermodynamic calcxiaticnal nethods LO 2redict va?or-li 1L a I O. Tz244.26 K (-20F) CI = FEED In I t- Z O W J 2 - a, m a m 0.0 I E / 0.565 0.0 I o 0.078 0.087 0.082 0.090 0.088 0.001 ;n;,Q1 , , , I , I 10 50 P, MPa GPA TP-5 78 iai 3824679 0010968 130 = Figure GPA TP-5 78 3824679 0

9、030767 O77 P, psia IO 100 000 10,000 I 1 I11111 I 1 I I I III I I 1 IlII T= 188.71 K (- 120“ F) Cl 0.565 c2 =O.OlO C3 = 0.078 nC6 = 0.090 OIL =0.088 c2 c3 ic, i c, GPA TP-5 78 m 3824679 0010970 99 m Figure P, psia 0.1 10. I 100 50 P, MPa 50 IC mI Id 3 1 1L a I 0.1 0.01 GPA TP-5 7a m 3azwq OOLOL 725

10、rn P, psia 100 1000 io,ooo I III I l I I IlII I I I I IlII - n T=273.71 K (33“ F) - EXP - FEED (Webber, 1941) - Ci = 0.701 O C2= 0.032 A c2 - -A A i c4 icg lC6 Figure 11. I IO 50 P, MPa Figure 12, GPA TP-5 78 m 3824699 0010972 bbL m P, psia I- I - I- f t t L / - 0.001 I IO 50 P, MPa Figure 1 GPA TP-

11、5 78 3824699 OOLO9Y 43Y P, psia IO 100 1000 1 I I I1 III I I I I I III 1 T= 188.71 K (-120“ F) FEED Ci = 0.701 C2 = 0.032 C3 = 0.056 iC4 = 0.054 iCg = 0.036 nC6 = 0.045 OIL = 0.076 o. 1 Figure 14. I P, MPa I 100 IO cn u 3 Q: 0.1 45 I 0.0 I 0.001 0.000 1 Figure 15. E! 3824699 0009686 720 111 P, psia 100 1000 io,ooo I 1 1 I I III I 1 1 11111 1 11 ill4 I I o. 1 I IO 50 P, MPa