Perforated Plate Corrugated Structured Packing in Vacuum Refinery Units
Product Description: Stainless Steel Perforated Plate Corrugated Structured Packing is made from sheet metal (0.1-0.2mm thick). Its structure retains the corrugated features of wire mesh corrugated packing, but with a larger equivalent diameter for universal application. Thin metal sheets with small holes are punched (punched) into corrugated sheet metal with grooves. The corrugated sheet metal is assembled into disc-shaped packing blocks using the same assembly method as wire mesh corrugated sheets. These blocks are arranged in a uniform geometric pattern within the tower and neatly stacked. This structure defines the gas-liquid flow path, improves channeling and wall flow, minimizes pressure drop, and provides a greater specific surface area, achieving higher mass and heat transfer within the same volume.
Technical Parameter
| Model | Perforated Plate Corrugated Packing | ||||||||
| Material | SS 304, 304L, 410, 316, 316L, etc. | ||||||||
| Model | 125Y | 250Y | 350Y | 500Y | 125X | 250X | 350X | 500X | |
| Specific surface | (m2/m3) | 125 | 250 | 350 | 500 | 125 | 250 | 350 | 500 |
| Bulk density | (kg/m3) | 100 | 200 | 280 | 360 | 100 | 200 | 280 | 360 |
| Void ratio | (%) | 98 | 97 | 94 | 92 | 98 | 97 | 94 | 92 |
| Obl. | angle | 45° | 45° | 45° | 45° | 30° | 30° | 30° | 30° |
| P | (Pa/plate) | 200 | 300 | 350 | 400 | 140 | 180 | 230 | 280 |
| Theo. plate | (piece/m) | 1~1.2 | 2~2.5 | 3.5~4 | 4~4.5 | 0.8~0.9 | 1.6~2 | 2.3~2.8 | 2.8~3.2 |
| Typical Application | Absorption, scrubbing and stripping services | ||||||||
Application
Perforated plate corrugated packing with the wide range of applications.
Diameter: 0.1-12m;Pressure: Vacuum to high pressure;
Liquid lood: 0.2 to more than 300 m3/m2.h;
System: Ethylbenzene/ styrene, Fatty acide, cyclohex anone/ cyclohexanol, caprolaction, etc, Absorption desorption.
Application of Stainless Steel Perforated Plate Corrugated Structured Packing in Atmospheric and Vacuum Refinery Units
Example of Atmospheric and Vacuum Refinery Retrofit:
Case 5: The atmospheric tower at the Daqing Oilfield Chemical Reagent Plant is a float valve tower with a main tower diameter of 3.2m and a designed processing capacity of 200x10t/a. After commissioning, actual production capacity, light oil yield, and product quality did not meet design requirements. To improve the unit's processing capacity, product quality, and yield, a technical modification was conducted. With the exception of trays 13-33, all remaining sections employed structured packing. The top circulation section employed ceramic structured packing with stainless steel internals. The naphtha/kerosene fractionation section employed corrugated metal plate packing and a narrow-groove liquid distributor, while the oil wash section employed ceramic structured packing and a narrow-groove liquid distributor. The flash section employed a 360-degree bell-mouth gas feed distributor, and the stripping section employed corrugated metal plate packing. After the modification, all operating indicators of the atmospheric tower met design requirements. At a processing capacity of 6,000t/day, the tower achieved a 34% pull-out rate, producing qualified product soon after startup.
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