450 Y Metal Plate Diameter 2800mm Round Shape Structured Packing
1. 450Y structured packing used in distillation column.
Distillation is a method to separate liquid mixture with high
purity by using reflux. It is a widely used liquid mixture
separation operation in industry, and is widely used in petroleum,
chemical, light industry, food, metallurgy and other departments.
Distillation operation is classified according to different
methods. According to the operation mode, it can be divided into
continuous distillation and batch distillation; according to the
composition of the mixture, it can be divided into binary
distillation and multi-component distillation; according to whether
the additives affecting the vapor-liquid equilibrium are added to
the mixture, it can be divided into ordinary distillation and
special distillation (including extractive distillation, azeotropic
distillation and salt-adding distillation); if the distillation
process is accompanied by distillation, it can be divided into two
types Chemical reaction is called reactive distillation
In the operation of packed tower, the liquid drops from top to
bottom along the structured packing surface, and the rising vapor
contacts with each other. Therefore, the packing surface is the
place for mass exchange and heat exchange.
2. What are the necessary structured pacing conditions for high
vacuum distillation column?
1) The surface area per unit volume of structured packing should be
large;
2) The free volume of the liquid phase in contact with the gas
phase must be large;
3) The resistance to steam should be small (i.e. the
cross-sectional area of the gap should be large);
4) Chemical resistance to both liquids and vapors;
5) The density should be small;
6) The price per unit of effective area should be small
3. structured packing types
| Item | Unit | 125X | 125Y | 250X | 250Y | 350X | 350Y | 500X | 500Y |
| corrugation height h | mm | 24.0 | 11.5 | 8.4 | 6.0 |
| corrugation inclination θ | (°) | 30 | 45 | 30 | 45 | 30 | 45 | 30 | 45 |
| corrugation distance 2B | mm | 39.6 | 19.0 | 14.0 | 9.9 |
| corrugation angle β | (°) | 79.0 | 79.1 | 79.6 | 79.0 |
| void fraction ε | δ=0.15mm | % | 99.4 | 98.6 | 98.0 | 97.2 |
| δ=0.12mm | % | 99.5 | 98.9 | 98.4 | 97.8 |
| δ=0.10mm | % | 99.6 | 99.1 | 98.7 | 98.2 |
| Perforated hole diameter d0 | mm | 4.5 | 4.5 | 4.0 | 4.0 |
| Opening rate σ | % | 8.5-9.5 | 8.5-9.5 | 9.0-10.0 | 9.0-10.0 |
| radius of curvature of the top circle of corrugation angle R | mm | ≤2.0 | ≤1.4 | ≤0.9 | ≤0.5 |
Note: The influence of opening rate on the plate is not calculated
4. Structured packing standard introduction.
1.1 This standard specifies the requirements for marking,
specification and characteristics, materials, manufacturing
requirements, inspection and acceptance, marking, packaging,
storage and transportation of stainless steel orifice corrugated
packing products, as well as the calculation of characteristic
parameters of orifice corrugated packing.
1.2 The corrugated packing with stainless steel orifice plate is
suitable for gas-liquid mass transfer separation tower equipment,
and the applicable temperature of the packing is - 200 ~ 400 ℃.
1.3 The structured packing is suitable for the clean gas-liquid
system without solid particles or suspended solids or easy to self
assemble.
2. Reference standard: GB / T 4239 cold rolled stainless steel and
heat resistant steel strip
5. Shipment of structred packing
every year we manufacture and supply hundreds of cubic meters of
metal structured packing in different models. There are many
popular types and materials for option. Custom order is welcome,
too! We are happy to help with what you need!
