Is excise duty levied on sale of old capital goods(10 years)

Yes, you have to pay central excise duty on remvoal of capital goods as per Rule 3(5) and 3(5)A of the CENVAT Credit Rules, 2004.

If machine is in good condition and it is sold as machine, then charge depreciation @ 2.5% per quarter on CENVAT Credit availed on this machinery (at the time of purchase) and reverse/pay the balance amount. Also calculate the excise duty on present sales value. If this excise duty comes more than above then charge this amount.

If Machine is sold as Scrap then charge Excise Duty @ 12.5% on sales Value.