1)
What did he do with all the Kelim?
1.
Malbim: He took them for himself, and made them Chulin.
2)
Why did he close the doors of Beis Hashem?
1.
'Rashi': It was so the Kohanim would not enter to serve in the Mikdash, rather, on the Mizbechos that Achaz put in every corner in Yerushalayim.
