SxSeal® 1000 Sulfur Seal Device | Sulfur Sealing

S_xSeal^® 1000

Above-ground Sulfur Seal Solution for SRU Rundown Lines

An above-ground Sulfur Seal solution for Sulfur Recovery Unit (SRU) rundown lines, replacing traditional sulfur seal legs. All SRU’s require some means of sealing the sulfur rundown lines between the condensers and temporary storage. A sealing device prevents process vapor loaded with H₂S and SO₂ gases from passing through the condenser with the liquid sulfur to the collection stage.

Historically, refineries and gas plants have used below-ground seal legs to prevent process vapor from entering sulfur pits or collection vessels. While seal legs are capable of this function, they are prone to water intrusion and mechanical plugging issues, which results in costly repairs and unplanned SRU downtime.

CSI’s above-ground sulfur seals are now the industry standard for this application in the oil and gas refineries, providing excellent sealing performance with increased reliability and easy online, “on-the run,” maintainability.

Nominal external dimensions (DIMs) - imperial units.

Operating Range Chart

The maximum flow rate varies with upstream pressure,
as shown in the chart.

Key Benefits

Safe and reliable sealing performance: Fully drains sulfur while preventing vapor flow
Easy to install: Installed entirely above ground, with simple flanged connections
Easy on-line cleaning: Debris collects in a strainer basket that can be cleaned in a quick, on-line operation
Reliable: CSI’s proprietary internal sealing mechanism has proven operation at SRU’s around the world
Easy to maintain: The complete sealing assembly is fully removable and replaceable

Standard Features

Nozzle size and orientation per site requirements
Quick-opening top head for fast on-line cleaning
Robust, long-lasting all stainless, removable sealing assembly
Upper chamber sight glass for diagnostics
Bolt-on ControTrace jacketing
Sealing mechanism remains closed in an over-pressure event

Optional Features

Bottom discharge
Through-vessel rod-out nozzles
Additional sight glasses
Custom vessel support and head configurations
Spare hot-swap components (strainer basket, float / seal mechanism, sealing plate with bolt-kit)

RELATED INFORMATION

ADDITIONAL RESOURCES

ADDITIONAL RESOURCES

				Operating Range Chart The maximum flow rate varies with upstream pressure, as shown in the chart.
Key Benefits Safe and reliable sealing performance: Fully drains sulfur while preventing vapor flow *Easy to install:* Installed entirely above ground, with simple flanged connections *Easy on-line cleaning:* Debris collects in a strainer basket that can be cleaned in a quick, on-line operation *Reliable:* CSI’s proprietary internal sealing mechanism has proven operation at SRU’s around the world *Easy to maintain:* The complete sealing assembly is fully removable and replaceable

Standard Features Nozzle size and orientation per site requirements Quick-opening top head for fast on-line cleaning Robust, long-lasting all stainless, removable sealing assembly Upper chamber sight glass for diagnostics Bolt-on ControTrace jacketing Sealing mechanism remains closed in an over-pressure event

Optional Features Bottom discharge Through-vessel rod-out nozzles Additional sight glasses Custom vessel support and head configurations Spare hot-swap components (strainer basket, float / seal mechanism, sealing plate with bolt-kit)