Ammonia flow divider

Apparatus for dividing the gas and liquid components of a two phase flow of anhydrous ammonia, comprising:

• an upper chamber having an upper flange surface and a top;
• a lower chamber having a lower flange surface and a bottom;
• a partition member interposed between said upper and lower flange surfaces, said partition member including walls defining an central aperture between said upper and lower chambers;
• at least one vapor outlet extending through said top of said upper chamber, at least one liquid outlet extending through said bottom of said lower chamber, and at least one two-phase inlet extending through said lower chamber disposed to admit two-phase flow in tangential relation to an internal surface of said lower chamber;
• and
• at least one lower screen extending across an inner wall of said lower chamber.

Apparatus for dividing the gas and liquid components of a two phase flow of anhydrous ammonia, comprising:

• an upper chamber having an upper flange surface and a top;
• a lower chamber having a lower flange surface and a bottom;
• a partition member interposed between said upper and lower flange surfaces, said partition member including walls defining an central aperture between said upper and lower chambers;
• at least one vapor outlet extending through said top of said upper chamber, at least one liquid outlet extending through said bottom of said lower chamber, and at least one two-phase inlet extending through said lower chamber disposed to admit two-phase flow in tangential relation to an internal surface of said lower chamber;
• at least one upper screen extending across an inner wall of said upper chamber;
• and
• wherein said upper screen is located approximately midway between said partition member and said vapor outlet.

Apparatus for dividing the gas and liquid components of a two phase flow of anhydrous ammonia, comprising:

• an upper chamber having an upper flange surface and a top;
• a lower chamber having a lower flange surface and a bottom;
• a partition member interposed between said upper and lower flange surfaces, said partition member including walls defining an central aperture between said upper and lower chambers;
• at least one vapor outlet extending through said top of said upper chamber, at least one liquid outlet extending through said bottom of said lower chamber, and at least one two-phase inlet extending through said lower chamber disposed to admit two-phase flow in tangential relation to an internal surface of said lower chamber;
• wherein said upper chamber has coaxial cylindrical inner and outer lower vertical walls joined at lower edges thereof by said upper flange surface, said top of said upper chamber being defined by coaxial cylindrical inner and outer upper vertical walls of substantially lesser diameter than said inner and outer lower vertical walls, respectively;
• and
• wherein upper edges of said lower inner and outer vertical walls are joined to lower edges of said upper inner and outer vertical walls by inwardly-concave curved upper inner and outer shoulder walls, respectively.

Apparatus for dividing the gas and liquid components of a two phase flow of anhydrous ammonia, comprising:

• an upper chamber having an upper flange surface and a top;
• a lower chamber having a lower flange surface and a bottom;
• a partition member interposed between said upper and lower flange surfaces, said partition member including walls defining an central aperture between said upper and lower chambers;
• at least one vapor outlet extending through said top of said upper chamber, at least one liquid outlet extending through said bottom of said lower chamber, and at least one two-phase inlet extending through said lower chamber disposed to admit two-phase flow in tangential relation to an internal surface of said lower chamber;
• and
• wherein said lower chamber has coaxial cylindrical inner and outer upper vertical walls joined at upper edges thereof by said lower flange surface, said bottom of said lower chamber being defined by coaxial cylindrical inner and outer lower vertical walls of substantially lesser diameter than said inner and outer upper vertical walls, respectively.

Apparatus for dividing the gas and liquid components of a two phase flow of anhydrous ammonia, comprising:

• an upper chamber having coaxial cylindrical inner and outer lower vertical walls joined at lower edges thereof by an upper flange surface, said upper chamber further having coaxial cylindrical inner and outer upper vertical walls of substantially lesser diameter than said inner and outer lower vertical walls, respectively, upper edges of said lower inner and outer vertical walls being joined to lower edges of said upper inner and outer vertical walls by inwardly-concave curved upper inner and outer shoulder walls, respectively, an upper edge of said upper outer cylindrical wall being joined to an outer top wall, and an upper edge of said upper inner cylindrical wall being joined to an inner top wall;
• a lower chamber having coaxial cylindrical inner and outer upper vertical walls joined at upper edges thereof by a lower flange surface, said lower chamber further having coaxial cylindrical inner and outer lower vertical walls of substantially lesser diameter than said inner and outer upper vertical walls, respectively, lower edges of said upper inner and outer vertical walls being joined to upper edges of said lower inner and outer vertical walls by inwardly-concave curved lower inner and outer shoulder walls, respectively, a lower edge of said lower outer cylindrical wall being joined to an outer bottom wall, and a lower edge of said lower inner cylindrical wall being joined to an inner bottom wall;
• said vertical walls being perpendicular to said top and bottom walls, said vertical walls being coaxial, and said vertical, shoulder and top walls of said upper chamber being substantially identical in dimension to said vertical, shoulder and bottom walls, respectively, of said lower chamber;
• a partition member interposed between said upper and lower chambers, said partition member including upper and lower peripheral surfaces opposite to and sealingly engaged with said lower and upper flange surfaces, respectively, and said partition member including upper and lower annular surfaces adjacent and extending inwardly from said upper and lower peripheral surfaces, respectively, interior said chambers, and said partition member further including an upwardly-tapered partially-conical weir wall extending inwardly from said upper annular surface to a circular weir edge located at a higher vertical location than said upper annular surface, and said partition member further including a downwardly-tapered partially-conical aperture wall extending inwardly from said weir edge to define a central aperture between said upper and lower chambers, with said central aperture being coaxial with said vertical walls and being centrally located with respect to said flange and peripheral surfaces;
• a plurality of vertically-cylindrical walls defining transfer apertures spaced equidistantly about and communicating between said upper and lower annular surfaces, said transfer apertures being spaced closely to said flange surfaces interior said chambers;
• at least one vapor outlet extending through said upper vertical walls of said upper chamber, at least one liquid outlet extending through said lower vertical walls of said lower chamber, and at least one two-phase inlet extending through said upper vertical walls of said lower chamber in close vertical proximity to said lower flange surface, said inlet being disposed to admit two-phase flow in tangential relation to said upper inner vertical wall of said lower chamber;
• and
• an upper screen assembly composed of a plurality of nested downwardly-concave screens extending across said lower inner vertical wall of said upper chamber, and a unitary lower upwardly-concave screen extending across said upper inner vertical wall of said lower chamber, with said upper screen assembly being located approximately midway between said partition member and said vapor outlet, and said lower screen being located approximately midway between said partition member and said liquid outlet.