Radical reactors for crude oil processing and refining are displayed.

Wedge Wire Filter Helps Eliminate Catalyst Migration in Crude Oil Processing

Technical Background

During the crude oil processing and refining processes, pressure vessels are widely used. Extremely high pressures, high temperatures and corrosive fluids will seriously affect the service life of internal screens. Refineries can't afford the cost of downtime arising from clogged screens or damage to expensive downstream equipment caused by catalyst migration.


The radial reactor can withstand high pressure, high temperature and corrosion, and solve the screen clogging and catalyst migration problems encountered in catalytic reforming and refining of crude oil processing. High quality wedge wire is not easy to plug and can maximize the reactor activity and extend the catalyst operation period as long as possible.

Radial reactors are employed for high volume flow capacity and minimal pressure drop. It expands the contact efficiency between the process stream and the catalyst bed, thereby reducing the size of the vessel. These reactors can not only produce higher yields, but also consume less energy.

  • Radial Flow Screen

    Complex processing requires radical reactors equipped with superior internal screens. Walcoom's radial flow screens provide advanced performance and cost-effective results for gas processing, biofuels, refining and petrochemical operations. Radial flow screen is divided into central wedge wire pipes and surrounding scallop pipes. Radial flow screens are mostly made of 316L stainless steel.

    The central wedge wire pipe provides durable, reliable media retention and high flow in radial flow systems. With the vertically oriented continuous slot design, the screen pipe enables the catalyst media to slide up and down along the screen pipe without abrasion or clogging. Our wedge wire pipes are precisely welded for superior strength, long-lasting durability, and providing years of effective and steady flow.

    The internal structure of radical reactor and its central pipe are displayed.

    Radical reactor central pipe

    The internal structure of radical reactor and its scallop pipe are displayed.

    Radical reactor scallop pipe

  • Inlet & Outlet Baskets

    In the down flow process, outlet baskets are used to retain the media directly and prevent expensive catalysts from moving out of the vessel. In the axial flow process, inlet baskets are used at the top of the vessel and serve as a distributor where filtration is required from the inside to the outside.

    Our outlet basket presents a smooth flat surface that reduces catalyst sanding. The continuous slot design prevents clogging and provides a larger total open area than standard wire mesh and perforated plates. Slot widths are customized to provide superior processing efficiency and retain preserving specific media sizes, eliminating the need for transition layers of inert balls. All baskets are precisely welded for exceptional strength. This ensures that the screen baskets will not collapse even under the heaviest loads, pressure drops and extreme temperatures.

    The location of outlet basket on the radical reactor is displayed.

    Outlet basket

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