US 12,186,725 B2
High pressure carbamate condensation apparatus
Rahul Patil, Maastricht (NL); Lambertus Wilhelmus Gevers, Merelbeek (NL); and Markus Theodorus Marie Michaël Wagemans, Roermond (NL)
Assigned to Stamicarbon B.V., Sittard (NL)
Appl. No. 18/578,192
Filed by Stamicarbon B.V., Sittard (NL)
PCT Filed May 12, 2023, PCT No. PCT/NL2023/050262
§ 371(c)(1), (2) Date Jan. 10, 2024,
PCT Pub. No. WO2023/219506, PCT Pub. Date Nov. 16, 2023.
Claims priority of application No. 22173284 (EP), filed on May 13, 2022.
Prior Publication US 2024/0261751 A1, Aug. 8, 2024
Int. Cl. B01J 19/00 (2006.01); B01J 4/00 (2006.01); C07C 273/04 (2006.01)
CPC B01J 19/0013 (2013.01) [B01J 4/001 (2013.01); B01J 19/006 (2013.01); C07C 273/04 (2013.01); B01J 2208/00176 (2013.01); B01J 2208/00194 (2013.01); B01J 2208/00256 (2013.01); B01J 2219/00081 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A high pressure carbamate condensation apparatus comprising a shell-and-tube heat exchanger comprising a shell and a first and a second horizontal U-shaped tube bundle each having an upper leg portion and a lower leg portion connected by a bend portion, a shell side space confined by the shell, a first fluid distributor arranged in the shell side space at a bottom section of the condensation apparatus for distributing a first high pressure gas stream into the shell side space, and an inlet and outlet for a MP urea-comprising stream,
wherein the first U-shaped tube bundle is arranged around the second U-shaped tube bundle and the upper leg portion of the outer first U-shaped tube bundle is proximally connected to the inlet for the MP urea-comprising stream and the lower leg portion of the outer first U-shaped tube bundle is proximally connected to the outlet for the MP urea-comprising stream and wherein the inner second U-shaped tube bundle is configured for raising steam; wherein the outlet for the MP urea-comprising stream has a larger flow area than the inlet for the MP urea-comprising stream.