I agree with OC. evaporate the HCL water
This is nonsens. Pour HCL/np into clean sepfunnel and sep off the bottom HCL layer, which contains the base in its saltform. Then pour the HCL back into you cleaned sepfunnel and slowly add enough e.g. 20% NaOH to bring the PH up (>12). The solution will turn milkywhite and you will see the base falling out, it settles to the bottom of your sepfunnel.
Sep off base, extract remaining waterlayer once with DCM to get everything out. Combine DCM with base and strip off DCM on waterbath.
Now you have 2 options:
1)You can distill the base under reduced pressure (bp 150-155 C in my case), to get a waterwhite and clean base (higherboiling impurities removed, dark redish trash remains in flask). Then you can dissolve the clean base in e.g. xylene and gas it. This is how i do it. If you want maximum yield you can skip the distillation.
2) Dissolve it like it is in e.g. xylene and gas.