add units to process in simpler way

[EvenSol]

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 46.72897% with 57 lines in your changes missing coverage. Please review.

Project coverage is 42.40%. Comparing base (27e16e0) to head (a442697).

Files with missing lines	Patch %	Lines
...ava/neqsim/process/equipment/EquipmentFactory.java	12.90%	26 Missing and 1 partial :warning:
...ava/neqsim/process/processmodel/ProcessSystem.java	70.83%	12 Missing and 2 partials :warning:
...n/java/neqsim/process/equipment/stream/Stream.java	48.00%	13 Missing :warning:
...n/java/neqsim/process/equipment/EquipmentEnum.java	0.00%	3 Missing :warning:

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #1333   +/-   ##
=========================================
  Coverage     42.39%   42.40%           
- Complexity     6450     6462   +12     
=========================================
  Files           747      749    +2     
  Lines         70874    70950   +76     
  Branches       8532     8534    +2     
=========================================
+ Hits          30047    30084   +37     
- Misses        38938    38974   +36     
- Partials       1889     1892    +3     

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