divorced spouse, married 15 years, on ssi disability, 61 yrs old. Can I receive anything from previous husbands social security

As it seems your ex-husband is still alive, you may be eligible at age 62 for benefits based on his Social Security record. See: http://www.ssa.gov/OP_Home/handbook/handbook.03/handbook-0311.html
See also: http://www.ssa.gov/OP_Home/handbook/handbook.04/handbook-0403.html
Receiving these benefits, however, would also affect your SSI. All but $20 of these benefits would be used to reduce your monthly SSI.