From 6bb1ef1c5c3523f8b85ab9beffd4bcc67b985bad Mon Sep 17 00:00:00 2001
From: cortespea <cortespea@ad.engr.wisc.edu>
Date: Fri, 5 Jan 2024 08:26:56 -0600
Subject: [PATCH] add special case

---
 thermosteam/equilibrium/lle.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/thermosteam/equilibrium/lle.py b/thermosteam/equilibrium/lle.py
index 4284cfc9..73a6155b 100644
--- a/thermosteam/equilibrium/lle.py
+++ b/thermosteam/equilibrium/lle.py
@@ -80,6 +80,7 @@ def pseudo_equilibrium_outer_loop(Kgammayphi, z, T, n, f_gamma, gamma_args, inne
         phi = phase_fraction(z, K, phi)
     except ZeroDivisionError:
         raise NoEquilibrium
+    if np.isnan(phi): raise NoEquilibrium
     if phi > 1: phi = 1 - 1e-16
     if phi < 0: phi = 1e-16
     Kgammayphi_new[:2*n] = Kgammay