How to design a vertical pressure vessel partially jacketed: internal chamber with kloepper heads, external with flat ends on both sides and smaller heigth? (Pressure vessel with external cooling system)

I'd like to design a pressure vessel with an external home-made cooling system (also pressurized)?

Should I split it in two separated design? Then how to deal with the cooling system?

Or should I deal with an pressure vessel partially jacketed? But how to input the flat ends on both extremities?

Thanks in advance for your help!