Presentations - 4C Conference
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Flares Instrument Analyzers and Sensors

On-line GC Solution to Comply with Flare Measurement Requirements

Ulrich Gokeler - Siemens Industry

Description

On line GC measurement solutions are often utilized to satisfy and comply with a wide variety of flare measurement regulations. 63.670 (RSR), Chapter 115 (TCEQ HRVOC) and Subpart Ja, Rule 1118 (SCAQMD)for example. There are similarities between several regulations permitting to share the same analytical configuration. Often GCs are the default choice because reliability, familiarity and maintainability. Utilizing on-line analyzers successful is not necessarily the analyzer but the knowledge of sample transport and sample conditioning design, validation needs and simplicity of maintenance. This presentation will discuss analytical similarities especially between RSR and HRVOC, explain proven and reliable analytical configuration and possible validation simplifications.

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Flares Instrument Analyzers and Sensors

Does CZNHV Track Flare Performance?

Yousheng Zeng - Providence

Description

The new Refinery Sector Rule (RSR) promulgated on December 1, 2015 requires facilities to continuously monitor Combustion Zone Net Heating Value (CZNHV) and flare tip velocity as a way to ensure high combustion efficiency (CE) and destruction efficiency (DE) of flares. The deadline for complying with these new requirements will be January 30, 2019. An experiment has been conducted on a steam assisted flare and an air assisted flare to evaluate CE under various vent gas and steam/air assist conditions with varying CZNHV and flare tip velocities. The CE was measured by both extractive sampling method and a new remote and continuous flare CE monitoring method – Video Imaging Spectro-Radiometry (VISR). The CE measured by both methods were examined along with the associatedCZNHV. The results show that high flare CE can be achieved with low CZNHV, much lower than the regulatory limits established in the RSR. The effectiveness of CZNHV as a suitable surrogate parameter for flare CE is examined within the regulatory context of the RSR regulations.

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Flares Instrument Analyzers and Sensors

Flare Guardian Project

Clayton Francis - Zeeco

Description

Eliminate the inaccuracies and delayed results inherent to indirect flare monitoring. Directly monitors flare performance in real-time rather than determining compliance and combustion efficiency through a time-consuming, repetitive process of measuring inputs, assuming reactions and velocities, and arriving at an assumed operating status.

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Flares Instrument Analyzers and Sensors

Flare System Control and Optimization at Refineries and Chemical Plants

Dan Johnson - Baker Hughes

Description

The new Refinery Sector Rule (RSR), passed by the EPA in December 2015, extends and strengthens the regulations governing stationary emission sources, specifically flares in refineries. It calls for the control and monitoring of flare systems, including, for example, meeting the specific requirements of Net Heating Value in combustion zone gas ( NHVcz), smokeless combustion and actual flare tip velocity(Vtip) for steam assist flare systems and additional Net Heating Value dilution parameter(NHVdil) for air assist flare systems. A flare control design, which takes live input of speed of sound from flare meters, was implemented to achieve real-time control using measurement of average molecular weight of an unknown hydrocarbon mixture from the sound of speed. This information can be used by the control system to determine the net heating value of vent gas as well as provide a dynamic ratio control for steam, this provides for a more efficient and responsive control scheme. Combined with the requirement of vent gas NHV imposed by Vtip, a continuous, efficient flare operation of supplemental gas will be demonstrated. By utilizing real time control via the speed of sound measurement provided by the flare meter, the risk of having a block of non-compliance is mitigated. Flare control systems using other schemes, such as controls based on feedbacks from Gas Chromatograph (GC) or calorimeters, were discussed in the paper. Practical implementation of this methodology and data are also discussed in this paper.

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Flares Instrument Analyzers and Sensors

Flare Gas Measurement Lessons Learned from Refineries & Future of Chemical Plants

Arnold Griswold - Fluenta Inc.

Description

EPA’s Refinery Sector Rule is about to come online. The new rule will cover all aspects of combustion efficiency to ensure the flare operation is done in a manner that is safe for the environment and safe for the operation of the facility. Refineries will undoubtedly need to take some actions irrespective of whether they use steam or air assisted flares in order to ensure heating values of at least 300 BTU/scft of gas at the flare. This can be done by monitoring gas composition, steam/air flow and flare gas flow rate.As flow rate is part of the calculation supplied to meet the requirements put forward by the EPA, a gas flow meter will need to be used to provide that piece of the puzzle. This presentation will discuss how ultrasonic flow meters have been used to determine the flowrates in refineries and other facilities. A discussion will follow focused on how this technology helps the facility operator comply with the existing and new EPA regulations, and on how much more can be done from the metering perspective to help the implementation of the new EPA rule.

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Flares Instrument Analyzers and Sensors

Ultrasonic Flowmeters Meeting the Flare Flow Measurement Challenges for Steam, Fuel Gas & Waste Gas Measurement

Dr. Lei Sui - Baker Hughes

Description

Coming soon.

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Flares Instrument Analyzers and Sensors

Optical Flow Sensors for Environmental Compliance and Process Control

- Optical Scientific

Description

OSI's Optical Flow Sensor (OFS) can help you comply with EPA’s Organic Liquids Distribution MACT, RSR and Ja regulations. Unaffected by temperature, pressure, density or gas concentration, OFS makes drift-free flow measurements on flare stacks, thermal oxidizers and a host of similar routine and extreme processes alike with no shutdown needed to install.

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Flares Instrument Analyzers and Sensors

Measurement & Speciation Using Mass Spectroscopy Flare Gas Composition

Chuck deCarlo - Extrel Core Mass Spectrometers

Description

As refineries continue to optimize their approach RSR 63.670 compliance, new regulations for flare emissions are set to hit a broad range of industries over the next five years. The goal is to ensure the destruction of Hazardous Air Pollutants (HAPs) prior to release into the atmosphere, but drastic changes in vent gas composition make controlling that efficiency difficult. Getting the full composition of the vent gas quickly allows operations to apply corrections as soon as possible. Flare gas mass spectrometers measure hydrocarbons, carbon oxides, hydrogen, sulfurs, moisture and various volatile organics, and report concentrations and Net Heating Value (NHV) to the control system in seconds. Examples from recent ethylene flare gas regulations and MON sites will be covered in the discussion, along with data from oil refinery flare events.

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Flares Instrument Analyzers and Sensors

Flare Panel Moderated by Spectrum Environmental Solutions

- Multiple

Description

Coming soon.

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Flares Instrument Analyzers and Sensors

Comprehensive Measurement and Analytical Technologies and Innovative Digital Solutions

Marcelo Carugo - Emerson Process Management

Description

Digital technologies provide strategies to reduce flare flow in the most cost-effective manner. Flare emissions reporting requirements, flare monitoring, relief valve, flare source monitoring, root cause analysis, flaring events, vent gas analysis, steam and supplemental gas flow measurement, flame detection, digital solutions.

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