Product Description
Random Packing:
Packings R Us:
At DtEC we design packed columns with a wide range of random packing types, which are supplied in full range of sizes and materials.
The column diameter and packed height for a specific duty is directly related to the packing size irrespective of packing type.
Random packing is supplied in the following common sizes:
| 5/8" |
(16mm) |
1" |
(25mm) |
2" |
(50mm) |
3" |
(75mm) |
| |
|
1½" |
(40mm) |
2½" |
(60mm) |
3½" |
(90mm) |
The larger the packing size the smaller the column diameter but taller the packed bed height. For most applications an optimum between the diameter and height is achieved when the 1½" and 2" sizes are used.
For smaller columns, packing size should always be less than one tenth of the column diameter to ensure the distribution quality is not adversely affected.
Random packing from DtEC is available in a wide range of materials:
- Metal
- Plastic
- Ceramic
- Carbon
Metal random packing is very robust with no operating temperature restrictions. We supply packing in various grades such as 410S stainless steel, 300 series stainless steels, copper and higher alloys e.g. 904L, alloy C276, alloy 400 and titanium.
Plastic random packing in polypropylene (PPL) with its good chemical resistance and low cost makes it an ideal choice for absorption and stripping applications. Maximum operating temperature is 120ºC.
For higher temperature services a range of fluoro-carbon plastics such as PVDF and PTFE can be used. In addition most plastics can be filled with glass fibre to increase rigidity and density,.
Ceramic random packing is rarely used nowadays except for very specialised systems such as sulphuric acid manufacture.
Carbon random packing (raschig rings) are supplied in various sizes. See relevant section for further details.
Structured Packing:
At DtEC we design packed columns with a wide range of structured packing types, which are supplied in full range of surface areas and materials.
Materials:
| Metal |
e.g. 410S, 304/304L, 316/316L, 904L, Alloy C276, Alloy 400 |
| Plastic |
e.g. PPL, PVDF & PTFE |
| Ceramic |
|
DtEC grid structured packing is supplied in high efficiency or high capacity versions either in 54mm or 70mm layer heights:
| F-Grid Type 25A |
(shown here) |
| F-Grid Type 2 |
(shown below) |
| F-Grid Type 3 |
Type 2 gives the highest capacity due to the small triangular projections providing superior liquid drainage and low pressure drop.
Type 3 has rectangular projections which promote turbulence as the vapour and liquid pass through thus providing the highest efficiency.
The capacity of Type 25A is similar to Type 3. The efficiency is lower than Type 3 but greater than Type 2.
Grid structured packing is widely used to provide direct contact heat transfer in fouling duties such as:
| Crude Tower Pump-Around |
| Vacuum Tower Pump-Around |
| Cracked Gas Quench Towers |
| FCC Main Fractionator Slurry Pump-Around |
All types of DtEC grid structured packing eliminate horizontal planes where liquid and solids can stagnate. Thus the grid packing has a very high resistance to fouling.
Grid structured packing is usually supplied in a thickness of 1.5mm and/or 2mm and is constructed in modules 1524mm x 406mm. Type 2 and 3 layer height is 70mm whilst type 25A layer height is 54mm.
DtEC grid structured packing due to its high structural strength and very open construction can withstand extreme upset conditions and large vapour surges without damage.
About Us:
Distillation Equipment Company Ltd (DtEC) is a chemical engineering companyspecialising in the design, manufacture and installation of mass transfer equipment for distillation columns.
With over 30 years combined experience in the oil, petrochemical, chemical and gas industry, DtEC can provide innovative mass transfer solutions for your distillation needs.
At DtEC, we all believe the customer comes first. Our charter is to give our customers excellent quality and service.
DtEC is fully committed to Quality Assurance. Across every activity we maintain rigorous standards, with all systems and procedures being accredited to: BS EN ISO 9001 : 2000.
From receipt of your enquiry, our team of dedicated professionals are here to give you a fast, efficient, knowlegeable and friendly response.
