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Steam

Zeeco's steam-assisted flares are used in applications where heavier waste gases need to be disposed and high-pressure steam is readily available on site. Our proprietary flare designs offer exceptional smokeless performance, lower radiation levels, and less noise than typical air-assisted flares.

QFS

Zeeco’s QFS Steam Assisted flare tip provides control of smoke in a flare system at an affordable cost. The design of the QFS steam injection nozzle minimizes the noise associated with steam injection. The proprietary QFS steam nozzle is designed using a number of injection ports to successfully reduce the steam injection noise to well below that of conventional steam assisted flare tips. Injection of steam at the flare tip exit point provides more than smokeless performance. The steam also “shapes” the flare flame in high wind conditions, eliminating the downwind flame impingement seen on many non-assisted flare tips. The steam also assists in lowering the radiation level at grade, by lowering the emissivity of the flare flame, and by providing an upward vector to stand the flame up in a crosswind.

HCL

In Zeeco’s HCL flare tip design, the steam injection manifold is moved from the top of the flare tip to a point near the base of the flare tip. This moves the steam injection nozzles away from the heat of the flare flame, and into a position where a noise shroud can be added to muffle the jet noise from the steam injection. The HCL flare tip uses a system of internal steam / air tubes to route an air / steam mixture from the steam injection manifold up the interior of the flare tip and discharge this steam / air mixture directly into the gas column as it exits the flare tip. The steam and air mixture is injected directly into the flare gas at numerous points across the diameter of the flare tip, and not just from the perimeter as in most standard steam flare designs. The design of the steam injection nozzles and internal steam / air tubes ensures the highest possible steam efficiency in controlling smoke. The HCL flare tip design can reduce the required amount of steam for a particular smokeless rate by 35-40% below that required in a standard steam flare tip with upper steam injection only.

MJS

Zeeco’s Multi-Jet Steam Assisted flare tip assembly is used for smokeless burning of low pressure, heavy hydrocarbons. This Zeeco flare tip assembly is commonly used for applications associated with the flaring of low pressure or medium pressure gases from chemical plants and refineries. This type of flare tip is used for flaring gases such as acetylene, butadiene, butylene, xylene, and so forth.

Zeeco normally uses medium to low pressure steam as the assist medium to inspirate air, create turbulence, and produce smokeless burning in MJS systems. The benefits to this approach include:

Our MJS flares divide flare gas into multiple small-diameter nozzles at the flare tip exit point, allowing for much better air accessibility.
The smaller flames from these multiple nozzles and increased access to the surrounding air results in lower assist utility requirements and higher smokeless flow rates. This increases the efficiency of injecting assist steam for smokeless burning.
This flare tip assembly has the ability to burn these very heavy gases smokelessly using the lowest possible steam assist quantities.

ADDITIONAL INFO

Steamforce HC™

The ZEECO® SteamForce HC straight tube design achieves smokeless flaring with dramatically less steam consumption and no pre-mixing of air and fuel gas. SteamForce HC uses a true venturi design, significantly increasing the inherent efficiency and decreasing dependence on fuel gas pressure and high rates of steam to achieve smokeless combustion.

Less steam saves money and reduces emissions generated from the production of steam.

SteamForce HC solves the most challenging aspects of steam flaring today:

Longer Flare Tip Life
No Pre-Mixing Before Exiting the Flare Tip
Reduced Emissions Through Dramatically Lower Steam Demands
Lowest Cost of Operation
Less Dependent on Fuel Gas Pressure for Smokeless Operation

Smokeless Operation at Lower Flow Rates

Given a flare gas pressure of 3 psig at maximum flare gas flow with smokeless operation at 20% of maximum flow, flare gas flow rate to achieve smokeless operation was a mere 0.12 psig – versus other designs which require flare gas pressures of up to 5 psig to achieve smokeless operation.

Revolutionary SteamForce HC Technology

The air and steam mixture leave the flare at the same elevation as the flare tip exit – no pre-mixing. Because other industry designs pre-mix the air and steam with the flare gas prior to exiting the flare tip, they are forced to operate at higher enriching rates to compensate.

The SteamForce HC maximizes the amount of air entrained by a given amount of steam. With more air flow, less purge steam is required to protect the equipment during low flow scenarios.

SteamForce HC improves flaring efficiency and reduces steam consumption while meeting EPA Code of Federal Regulations, Chapter 1, Subchapter C, Part 63, Subpart CC requirements – and can do so at lower steam and purge rates than any other competitive offering.

Zeeco’s SteamForce HC makes a dramatic difference for companies who want a lower cost of ownership, lower emissions, and a flexible design in a flare tip that will operate smokelessly with less steam at lower flow and purge rates than competitor offerings.