Its will be maybe hard, but just edit what is need for that procces, change for another fluid and it can be possible I know how eddit it, maybe not optimal but possible just dont know where remove that request for Petrochem.

Hi, I want to use angels smelting but new design of chemicals and full new procesing from normal factorio its not playable for me. Is here any way how to play just Angels smelting without instaling Angels petrochem ?
Thanks for Help,
Bessy