Mist Eliminator - Entrainment Separator
For efficient entrained liquid or mist removal in any liquid-gas/vapor processing operation.
Key Benefit
higher fluid throughput
better efficiency and overhead
product quality prevention of expensive liquid
reduced atmospheric pollution
The Classifier has no moving parts, is light and adaptable to all process equipment and offers wide choice of material of construction. It is easy to install and requires no maintenance.
What Is Classifier
The classifier is a tailor made product of Continental Profiles (India) Limited, specially designed and manufactured out of knitted wires. it consists of wires elements sandwiched between a bottom support and top hold down grid. Properly applied it achieves 99.9% and over separation of entrained liquid in a vapour stream. It is individually engineered for specific process conditions and can be made of any shape or size. It can be installed in new as well as existing vessels.
Operative Principles Of Classifiers
The separation action of a classifier is mainly that of impingement. The vapour passes easily through large free volume of knitted mesh elements but entrained liquid droplets with greater inertia contact the extensive wire surface of elements and are briefly held. These droplets flow downwards collecting on adjacent wires, flowing downwards again when these collecting points are overloaded. The drops grow in size until they are large enough for the force of gravity to exceed the combined forces of velocity and surface tension when they fall down. The resultant stream is pure vapour containing no liquid.
Application
The highly efficient method of entrainment separation by employing classifiers is widely used in liquid gas process operations in petroleum refining, chemical distillation and evaporation, distillation plants and nuclear power plants. The important vessels where classifiers are fitted are distillation columns, vacuum towers, fractionating towers, lube oil towers, flash drums, knock-out drums, steam drums, scrubbers, strippers, absorbers, evaporators, cooling towers.
Superb Advantages Of Classifier
It is a highly efficient entrainment separator at velocities which can vary 8-10 times.
It has no moving parts and does not require operating attention.
It is automatic in its operation. No auxiliaries are needed - no instrumentation; once installed it work.
It is inexpensive to purchase and easy to install.
It combines very high efficiency with very low pressure drop.
It has no operating costs other than periodic replacement after an extended period of operation.
It can be made from a wide variety of materials to suit any unusual process or corrosive condition.
It reduces solvent and product losses.
It is self cleaning because of the scrubbing action of the coalesced droplets.
It can be designed for operation at high efficiency even during violent surging conditions.
It pays for itself in a very short time because of its high efficiency and low cost.
Styles
| Classifier Style | Free Volume % | Surface Area m²/dm³ | Typical Service Conditions |
|---|---|---|---|
| HC 16 | 9930 | 0.15 | Minimum pressure drops, dirty service |
| HC 28 | 98.2 | 0.28 | Standard-General purpose |
| HC 38 | 97.6 | 0.37 | Heavy duty for heavy entrainment loading |
| HC 41 | 98.4 | 0.46 | High efficiency for fine entrainment |
| HC 61 | 96.0 | 1.48 | Distillation media |
Materials Of Construction
The classifiers are made of the finest quality materials. Wires are smooth, clean and bright for rapid liquid drainage and are stress relieved to resist stress corrosion. They are made in wide range of materials. The important are given below:
| Materials | Where Used |
|---|---|
| AISI 304 stainless steel | Water solns, Nitric Acid, Reduced Crude, Petroleum fractions etc. |
| AISI 316, 317 stainless steel | Fatty Acids, Reduced Crude containing Naphthenic Acids and other Corrosives |
| AISI 430 stainless steel | Water, Nitric Acid, Steam. |
| Nickel | Caustic Soda, Food Products |
| Monel | Caustic Soda and other Alkalies, dilute acids. |
| Copper | Freons, Alcohol |
| Carbon Steel | Dry, non-corrosive Hydrocarbons. |
| Polypropylene, polyethelene | Corrosive fluids at moderate temperatures. |
| Teflon | Highly corrosive conditions |
Classifier Selections
For proper selection and design of classifiers the detailed information regarding process conditions should be supplied to Continental Profiles. Please indicate the following wherever possible:
| # | Selection Criteria |
|---|---|
| 01 | Vapour Velocity |
| 02 | Vapour Density |
| 03 | Liquid Density |
| 04 | Surface Tension |
| 05 | Liquid Particle size and quantity or process and System Description |
| 06 | Operating Temperature and pressure |
| 07 | Materials of constructions |
| 08 | Performance requirements |
Mechanical Design Details
Classifier elements are securely tied to individual grid sections. The element and grids are made of proper curvature to suit the vessel. The knitted wire mesh is resilient and will provide a sung fit in the vessel. Only requirement for the user is to provide a support ring welded to vessel wall with holes to fasten grid section with tie wires.
Need Technical Consultation?
Our engineering team can help identify the most suitable Demister Pads / Mist Eliminator solution for your process requirements.