So just to make sure I got it right...

You've sent USDT from Binance to a BTC-Address on poloniex?

First of all: I might be wrong as I usually don't transfer USDT, but...
...if the USDT from Binance are the Omni Protocol and not ERC20 based version, Poloniex should be able to recover it.
However it depends on their support I guess... but in theory it should be possible. Would have been easier if you had access to the private-key of the receiving-wallet but if it's an exchange-wallet, you'll have to hope that the support can provide some help.