Dialing in BHO purge for novice user?

My BHO turned into this And still sparks and spits when I put a flame to it is there any way I can purge this or is the butane stuck

I don’t have a full vac oven just a chamber and heat mat

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(upload://sqvDa5j3sL9papQx36u6xN3Rbbz.jpeg)