Johnson Screen Filter (Wedge Wire Filter) For Hydrogenation Unit
At present, the world's crude oil tends to be inferior and heavy, but the market demand for light oil such as gasoline, diesel oil and kerosene is increasing substantially, and major refining enterprises are pursuing the maximum conversion of residual oil.
Therefore, hydrotreating process is becoming more and more important.
In order to meet the growth of market demand, we have established a wedge wire filter element production line for automatic backwash filter with integrated production and quality inspection in workshop #1.
These filter elements are specially used in hydrogenation unit of petrochemical industry.
Main equipment of hydrogenation unit
Hydrogenation reactor
High pressure heat exchanger
High pressure air cooling
High pressure separator
Reaction heating furnace
New hydrogen compressor
Recycle hydrogen compressor
Automatic backwash filter
If the mechanical impurities are not removed, they will be deposited on the top of the reactor, which will cause the reactor pressure difference to be too large and forced to shut down and shorten the operation period of the unit.
Therefore, hydrogenation raw materials need to be filtered, and now automatic backwash filters are mostly used.
Compared with the old filter, the automatic cleaning filter has the advantages of high automation and high filtering precision, which shows its advantages in practical application.
The automatic backwash filter adopts the principle of mechanical separation, high quality metal wedge wire filter element is used to separate impurities from raw materials.
The filter surface of the filter tube is made of wedge-shaped wire, and the small gap between the wedge-shaped wires forms a cross section, which is conducive to backwashing.
When the raw material passes through the filter cartridge with Johnson screen filter element, the mechanical impurities gradually deposit on the outer surface of filter element.
As the deposition of mechanical impurities increases, the raw materials passing through the filter element gradually decrease, and the outlet pressure also decreases, resulting in the increase of the differential pressure of the filter. The equipment will use the filtered raw material and its own pressure to backwash the filter element from inside to outside.
Material | SS304, SS304L, SS316, SS316L, SS321, Duplex, Hastelloy, etc | ||||||
OD Range | 19mm-2000mm | ||||||
ID Range | 13mm-1981mm | ||||||
Length Range | Up to 6000 mm | ||||||
Slot Range | 20 micron to 3000 micron (Tolerance:+-5 micron) | ||||||
Wedge Wire | 0.5x1.5 | 0.75x1.5 | 1x2 | 1.5*2 | 2x3 | 2*4 | 3*5 |
Support Rod | 1.5x2.5 | 1.5x2.5 | 1.5x2.5 | 1.8*2.5 | 2x3 | 2x4 | 3x5 |
2x3 | 2x3 | 2x3 | 2x3 | 2x4 | 3x5 | 3x6 | |
3x5 | 3x6 | 3x10 | |||||
3x6 | 3x10 | 4x7 | |||||
3x10 | 4x7 | 5x6 | |||||
4x7 | 5x6 | 5x8 | |||||
End Finishing | Thread fitting, Flange, Closed Plated, Resistance welded closed plate, Metal Ring, etc | ||||||
Note | Customized According To Requirement |
Advantage:
Good filtering effect
High degree of automation
The flushing of raw materials shall not be polluted
There are many forms of flushing process
Performance Characteristics Of Johnson Screen Filter (for Hydrogenation Unit)
- Wedge wire structure, strong mechanical strength.
- Arc shaped filtering gap, improving scour resistance and service life
- 20, 25 and more than 25 microns slot size wedge wire filter elements of different specifications are available for selection.
- The filtering gap of raw material filter element of petrochemical hydrogenation unit is evenly distributed.
- V - shaped wire design increases the reverse pressure difference by more than 7 times, with complete flushing and strong regeneration ability.
- The instantaneous pressure difference is more than 50MPa.
- 316L material is suitable for all kinds of fluids.
Our Johnson screen filter elements of petrochemical hydrogenation unit have been exported to more than 30 countries, mainly serving domestic and foreign refineries, chemical plants and other petrochemical enterprises.



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Company Information
Hengshui Guangxing Screens Co.,Ltd is a leading manufacturer of water well screen, flat panel screens, intake screens, rotary drums, cartridges and fabricated stainless wedge wire screen products.
Our factory founded in 1986 to produce the best possible profile wire screens available.
We provide screening solutions to almost every industry, including:
Water Well,
Food &Beverage Screens,
Pharmaceutical & Biological industries,
Refining & Petrochemical,
Water Treatment & Liquid / Solids Separation,
Mineral & Aggregate Processing,
Pulp & Paper Screens.
Guangxing Screens is producing wedge wire and profile wire in several materials, with a wide variety of sizes, shapes and precision openings.
For over 30 years, Guangxing Screens has continuously produced metal products for customers seeking a competitive advantage in their industry. Guangxing Screens is an ISO-9001:2008 registered company.
We are committed to producing quality products which meet or exceed both customer and industry standard. The majority of our products are exported to original equipment manufacturers of 35 countries of Europe, America, Africa, and Asia.
We know our customers and we listen to them and respond quickly to their needs.
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