Q&A on Basic Tower Knowledge 28---When designing the structural format of tower equipment, what factors related to the properties of the material need to be considered?

This post was last edited by hcb081995 on 2011-3-24 at 10:38. Reference answer: The properties of the material are a key factor in selecting the structure of tower equipment; considerations should be given to the following aspects: (1) For materials prone to forming bubbles, if the processing volume is not large, a packed tower is the appropriate choice. Because fillers can easily cause the foam to collapse, and in plate towers they can lead to flooding. (2) For corrosive colored media, a packed tower can be used. If a tray tower must be employed, it is advisable to choose a sieve tray tower, a cross-flow tray tower, or a tongue-shaped tray tower with a simple structure and low cost, so as to allow for easy replacement. (3) Materials that are thermosensitive require operation under reduced pressure; to prevent decomposition or polymerization caused by heat, tower types with a smaller pressure drop should be used, such as towers equipped with regularly packed packing or wet-wall towers. When a lower vacuum level is required, sieve plate towers and floating valve towers are suitable. (4) For materials with high viscosity, larger-sized fillers can be used. The mass transfer efficiency of the plate tower is too poor. For materials containing suspended solids, a tower type with larger fluid flow channels should be selected, with a plate tower being the preferred choice. Bubble column towers, floating valve column towers, tray columns, tongue-shaped column towers, and tray columns with larger pore sizes can be used. Small fillers should not be used. (5) For systems with heat effects during operation, a plate tower is appropriate. Due to the liquid layer on the tray, a heat exchanger can be installed therein for effective heating or cooling.

This post was last edited by hcb081995 on 2011-3-24 at 10:38. 1. For materials that tend to form bubbles, a packed tower is the better choice when the processing volume is not large. 2. For corrosive media, a packed tower should be used. 3. For heat-sensitive materials that require operation under reduced pressure, a tower type with a lower pressure drop is appropriate. 4. When the viscosity is high, larger-sized packing should be used. 5. For systems with thermal effects during operation, a plate tower is the better option

This post was last edited by hcb081995 on 2011-3-24 at 10:38. 1. For materials that tend to form bubbles, a packed tower should be chosen when the processing volume is not large. 2. For corrosive media, a packed tower can be used. If a plate tower must be used, one with a simple structure, low cost, and ease of replacement is preferable. 3. Thermosensitive materials require operation under reduced pressure; a column with a low pressure drop is preferred. 4. For materials with high viscosity, larger-sized fillers can be used. 5. For systems with heat effects during operation, a plate tower is suitable.

This post was last edited by hcb081995 on 2011-3-24 at 10:44. The properties of the materials are a key factor when selecting the structure of tower equipment, and considerations should be given from the following aspects. 1. For materials that tend to form bubbles, when the processing volume is not large, it is advisable to use a packed tower. Because the packing can cause the foam to break, it easily leads to flooding in plate towers. 2. For corrosive media, a packed tower can be used. If a plate tower is necessary, it is advisable to choose a sieve tray tower, a cross-flow tray tower, or a tongue-shaped tray tower with a simple structure and low cost, so as to allow for easy replacement. 3. Materials that are thermosensitive require operation under reduced pressure; to prevent decomposition or polymerization caused by heat, tower types with a small pressure drop should be used, such as towers equipped with regularly packed packing or wet-wall towers. When a lower vacuum level is required, sieve plate towers and floating valve towers are suitable. 4. For materials with high viscosity, larger-sized fillers can be used. The mass transfer efficiency of the plate tower is too poor. For materials containing suspended solids, a tower with larger flow capacity should be chosen, with a plate tower being the preferred option. Bubble column towers, floating valve column towers, tray columns, tongue-shaped column towers, and tray columns with larger pore sizes can be used. Small fillers should not be used. 5. For systems with heat effects during operation, a plate tower is preferable. Due to the liquid layer on the tray, heat exchange tubes can be placed therein for effective heating or cooling.

Throughput, viscosity, density, corrosivity, thermal stability

This post was last edited by hcb081995 on 2011-3-24 at 10:42. The properties of the materials are a key factor in selecting the structure of tower equipment, and considerations should be given from the following aspects. (1) For materials that are prone to foaming, when the processing volume is not large, it is advisable to choose a packed tower. Because the packing can cause the foam to break, it easily leads to flooding in plate towers. (2) For corrosive media, a packed tower can be used. If a tray tower must be employed, it is advisable to choose a sieve tray tower, a cross-flow tray tower, or a tongue-and-groove tray tower with a simple structure and low cost, so as to allow for easy replacement. (3) Materials that are thermosensitive require operation under reduced pressure; to prevent decomposition or polymerization caused by heat, tower types with a smaller pressure drop should be used, such as towers equipped with regularly packed packing or wet-wall towers. When a lower vacuum level is required, sieve plate towers and floating valve towers are suitable. (4) For materials with high viscosity, larger-sized fillers can be used. The mass transfer efficiency of the plate tower is too poor. For materials containing suspended solids, a tower type with larger flow channels should be selected, with a plate tower being the preferred choice. Bubble column towers, floating valve column towers, tray columns, tongue-shaped column towers, and tray columns with larger pore sizes can be used. Small fillers should not be used. (5) For systems with heat effects during operation, a plate tower is suitable. Due to the liquid layer on the tray, heat exchange tubes can be placed therein for effective heating or cooling.

This post was last edited by hcb081995 on 2011-3-24 at 10:42. The properties of the materials are a key factor in selecting the structure of tower equipment, and considerations should be given from the following aspects. (1) For materials that are prone to foaming, when the processing volume is not large, it is advisable to choose a packed tower. Because the packing can cause the foam to break, it easily leads to flooding in plate towers. (2) For corrosive media, a packed tower can be used. If a tray tower must be employed, it is advisable to choose a sieve tray tower, a cross-flow tray tower, or a tongue-and-groove tray tower with a simple structure and low cost, so as to allow for easy replacement. (3) Materials that are thermosensitive require operation under reduced pressure; to prevent decomposition or polymerization caused by heat, tower types with a smaller pressure drop should be used, such as towers equipped with regularly packed packing or wet-wall towers. When a lower vacuum level is required, sieve plate towers and floating valve towers are suitable. (4) For materials with high viscosity, larger-sized fillers can be used. The mass transfer efficiency of the plate tower is too poor. For materials containing suspended solids, a tower type with larger flow channels should be selected, with a plate tower being the preferred choice. Bubble column towers, floating valve column towers, tray columns, tongue-shaped column towers, and tray columns with larger pore sizes can be used. Small fillers should not be used. (5) For systems with heat effects during operation, a plate tower is suitable. Due to the liquid layer on the tray, heat exchange tubes can be placed therein for effective heating or cooling.