While simulating certain flowhseet, I came across an error of "Index was out of bound array" for material stream which was input to the equilibrium reactor. Also the feed to reactor is expected to be in vapour phase which is accomplished by using heater. But after using heater the results of that stream indicate that its still in liquid phase. Increasing the temperature is an option but the reaction doesnt take place at higher temperatures. Can you help me with this?

At certain times with recycle streams, the compressor in the recycle stream gives the error as solver reached the maximum number of iterations. Is there any option to increae the number of iterations for compressor?