Can DUKPT BDK be 192 bits?

All examples seem to be with 128 bits. Can it be 192 bits?

Maybe sort of.
The DUKPT algorithm is defined to use "twokey tripleDES", or formally TDEA Keying Option 2 from SP80057 or originally FIPS463. Every key in this algorithm (BDK, device initialization key(s), future keys, and working key(s)) is a "doublelength key" consisting of two classicDES (DEA) keys, each 56 real key bits plus 8 bits reserved for parity and today often ignored, stored and transmitted and used as 64 bits, totalling 128bits.
Some implementations of tripleDES aka TDEA aka DESede (possibly including yours) require you always represent the key in fulllength 192bit or 24octet form. Given a doublelength key, you create a triplelength key by duplicating the first half, i.e. if the doublelength key is (k1) (k2) then the triplelength key is (k1) (k2) (k1) . The result occupies 192bits but only contains 112bits of "real cryptographic keyosity".