Ultra-Low Steam Consumption, High Capacity Smokeless Flaring

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Title Ultra-Low Steam Consumption, High Capacity Smokeless Flaring
Creator Isaacs, R.
Contributor Francis, C.
Date 2018-09-17
Description Paper from the AFRC 2018 conference titled Ultra-Low Steam Consumption, High Capacity Smokeless Flaring
Abstract This paper will introduce the technology behind, test data for, and industry challenges; addressed by a new Ultra-Low Steam Consumption, High Capacity Smokeless Flare design; developed by Zeeco, Inc. This flare technology is designed to further improve flaring; efficiency and reduce steam consumption while continuing to meet the EPA Code of Federal; Regulations, Chapter 1, Subchapter C, Part 63, Subpart CC requirements. We will focus on; how the design addresses known industry challenges in high capacity, low steam consumption; flaring, such as needing the ability to operate at low flare gas pressure since many; applications have a maximum flare gas pressure at the flare tip of 3 psig.; The paper will detail how this new design can achieve as low as 0.17 lbs. steam / lbs. flare; gas at 20% of maximum flow rate, with the maximum flow rate achieved at a flare gas; pressure of 3 psig. The above data is based upon a 5 mph wind with less than Ringlemann 1; opacity and a flare gas that is 100% propylene. For smokeless operation with propylene, other; current steam assisted flare designs require approximately 0.5 lbs. steam / lbs. flare gas; and / or a much higher flare gas pressure at maximum flaring capacity. Ultra-Low; Consumption Steam Assisted Flaring is very important since any reduction in the required; steam flow rate saves not only money, but also reduces the emissions produced from the; production of the required higher steam flows.; A key feature of this technology is that the air and steam mixture leave the flare at the same; elevation as the flare tip exit, meaning no pre-mixing of air into the flare stream. Other; current industry designs mix the air and steam with the flare gas prior to exiting the flare tip,; negatively impacting the NHVcz according to the new calculation parameters required by; MACT CC. Zeeco's design more efficiently mixes the steam and air together and then mixes; the resulting stream with the flare gas, creating a final mixture with a significantly increased; volume of air. When the resulting mixture interacts with the flare gas at the tip exit, the; increased air volume is readily available for combustion, meaning the flare is less likely to; smoke. Since the design more efficiently mixes the air and steam together, less steam is; required to achieve smokeless operation. Furthermore, the inherent efficiency of the mixing; delivers a design less dependent upon using flare gas pressure to achieve smokeless; operation. The flare can successfully operate at lower gas pressures at maximum flow rate.
Type Event
Format application/pdf
Rights No copyright issues exist
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Metadata Cataloger Catrina Wilson
ARK ark:/87278/s61c66xg
Setname uu_afrc
Date Created 2018-12-12
Date Modified 2018-12-12
ID 1389191
Reference URL https://collections.lib.utah.edu/ark:/87278/s61c66xg