111- Design of a special vane separator for the product gas compression unit in propylene production via PDH process
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This post was last edited by luoli519 on 2024-4-3 at 11:11. In recent years, several PDH plants that produce propylene through the hydrodehydrogenation of imported propane have been put into operation or are about to be constructed in China. Please discuss the design of the specialized vane separator involved in the compressor unit for the reactor effluent gas of this device, using practical examples as a reference.
This post was last edited by luoli519 on 2023-9-27 at 12:48. It is a PDH unit that has been installed by a petrochemical company located along the coast. A renowned multinational oil and gas company is responsible for the EPC work of its product gas compressor units. Since the product gas compression units of PDH plants require specialized vane separators, this renowned multinational oil and gas company outsourced the production of such separators to a specialized company that holds patent technology for precise vane separator design.
The product gas compression unit of this PDH plant employs three-stage compression, which requires an inlet separator for the compression unit, a 1st stage discharge and 2nd stage suction separator, as well as a 2nd stage discharge and 3rd stage suction separator. The discussion is carried out separately as follows.
The gas-phase composition of the product gas in each separator involved in this compressor unit is the same; detailed data are shown in the figure below:
The last edit to this post was made by luoli519 on 2023-9-27 at 12:50. Regarding the inlet separator, which is the vane separator in the suction section of the compression unit, the basic process details provided by the customer are as follows: 1. Type of process gas: Reaction product gas from the PDH unit; its composition is shown in the attachment above； 2. Operating temperature: 42 ℃ ； 3. Operating pressure: 1.04 BarA ； 4. Gas flow rate: 364824 kg/h ； 5. The designed operating pressure drop is no more than 0.01 Bar, and it features a design with anti-clogging vaned separation internals.
This post was last edited by luoli519 on 2023-9-27 at 12:50. The separator for the 1st stage discharge section and the 2nd stage suction section of the compression unit is referred to as the 1st Stage Discharge and 2nd Stage Suction Separator. The relevant basic process details are as follows: 1. Type of process gas: Reaction product gas from the PDH unit; its composition is shown in the attachment above； 2. Operating temperature: 42 ℃ ； 3. Operating pressure: 2.64 BarA ； 4. Gas flow rate: 364824 kg/h ； 5. The designed operating pressure drop is no more than 0.1 Bar, and it features a design with anti-clogging vaned separation internals.
This post was last edited by luoli519 on 2023-9-27 at 12:50. The separator for the 2nd stage discharge section and the 3rd stage suction section of the compression unit is as follows: 1. Type of process gas: Reaction product gas from the PDH unit; its composition is shown in the attachment above； 2. Operating temperature: 42 ℃ ； 3. Operating pressure: 5.67 BarA ； 4. Gas flow rate: 364824 kg/h ； 5. The designed operating pressure drop is no more than 0.1 Bar, and it features a design with anti-clogging vaned separation internals.
The last edit to this post was made by luoli519 on 2024-4-3 at 11:11. The G50B type radiation-stable inlet separation assembly required for the vane separator used in PDH unit product gas compression machines is shown in the figure below:
This post was last edited by luoli519 on 2024-4-3 at 11:11. The G50-type patented blade separation element required for the blade separator used in the product gas compression units of PDH devices is shown in the figure below:
The last edit to this post was made by luoli519 on 2023-9-27 at 12:51. The parameter details of the inlet separator for the compression unit, which was designed using dynamic separation techniques for precise configuration, are as follows: 1. Separator name: Vane separator specifically designed for the product gas compression unit in PDH plants； 2. Design and configuration platform: NOVEL high-efficiency kinetic separation precise design and configuration system platform ； 3. Inlet separation assembly: G50B type radiation-stable inlet separation assembly ； 4. Anti-clogging, high-efficiency separation internals: G50 patented technology feather-leaf separation internals set ； 5. Overall operating pressure drop: 0.145psi ； 6. Separation precision: 4.68 microns * 4N grade ； 7. Operational flexibility: 15%-135% ； 8. Continuous operation life: >20 years; 9. Separator size: ID 163.4"*SM/SM 176"; 10. Separator model: NOVEL G50-164-72.5.
This post was last edited by luoli519 on 2023-9-27 at 12:51. The 1st Stage Discharge and 2nd Stage Suction Separator for compressor units, which is designed using dynamic separation techniques to achieve precise configuration, has the following parameter details: 1. Separator name: Special vane separator for product gas compressor units in PDH plants； 2. Design and configuration platform: NOVEL high-efficiency kinetic separation precise design and configuration system platform ； 3. Inlet separation assembly: G50B type radiation-stable inlet separation assembly ； 4. Anti-clogging, high-efficiency separation internals: G50 patented technology feather-leaf separation internals set ； 5. Overall operating pressure drop: 0.629psi ； 6. Separation precision: 5.39 microns * 4N grade ； 7. Operational flexibility: 15%-135% ； 8. Continuous operation life: >20 years; 9. Separator size: ID 129.9"*SM/SM 166"; 10. Separator model: NOVEL G50-130-72.5.