CEMS System Capabilities for the Hydrocarbon Processing Industry0 pages

Application Note

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CEMS System Capabilities for the tt
Hydrocarbon Processing Industry
Background
The hydrocarbon processing industry (HPI) has many poten­ ial
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sources of combustion gas emissions. These include pro­cess heaters,
fluid catalytic crackers (FCC), power boilers and sulfur recovery units
(SRU). The industry is unique because many emissions monitoring
applications occur in areas classi­ ed as hazardous.
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Monitoring Requirements
The primary federal regulations defining continuous emis­ ions
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monitoring (CEM) requirements are found in 40 CFR 60 and 40
CFR 75. The latter is also known as the Clean Air Act Amendments
(CAAA) of 1990. However, state and local agen­cies can impose
additional, stricter requirements for monitor­ ng and controlling
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pollutants.

Hydrocarbon Processing Industry

These regulations may require monitoring sulfur dioxide (SO2),
oxides of nitrogen (NOx), opacity, a diluent [carbon dioxide (CO2)
or oxygen (O2)] and stack flow. Furthermore, with the CAAA’s
requirements for NOx abatement, many fa­ ilities will install selective
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catalytic or non catalytic reduction (SCR or SNCR) units which utilize
ammonia (NH3) to reduce NOx emissions. In these instances the
regulatory agency may include NH3 monitoring as part of the CEM
requirements. In some areas of the country local agencies have also
required the continuous monitoring of carbon monoxide (CO) and
or total hydrocarbons (THC).

Rosemount Analytical’s CEMS are designed, engineered and
constructed at our ISO 9001-certified facilities. These systems range
from pre-engineered, packaged systems, to complex engineered
systems that measure multiple gases using data acquisition and
handling systems.

Area Requirements

Opacity/Dust Density Measurement

Typical HPI CEMS may require installation in cabinets or shel­ ers that
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are designed to meet NFPA 496 electrical require­ ents. In addition
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local electrical inspection and/ or approval may be required.

A Modular Solution
Rosemount Analytical offers a family of process analyzers and
modular continuous emissions monitoring system (CEMS) designs to
effectively meet the needs of HPI facilities.
Rosemount Analytical is the only single-source supplier that:
Design, engineers, and builds the CEMS
Manufactures the analyzers
Provides applications engineering
Offers a variety of ongoing maintenance contracts
Guarantees EPA certification

Process Analyzers

The Rosemount Analytical family of process analyzers em­ploys
a variety of patented technologies to accurately monitor stack
emissions at HPI facilities.

The OPM series offers a unique, patented system of glass liquid
crystal windows (LCWs) that modulate the light beam without
mechanical choppers or other moving parts greatly enhancing
reliability. This feature, coupled with the use of a single light source
and detector, establishes the OPM Series as the only truly digital,
solid-state transmissometer.

X-STREAM Enhanced General Purpose
Analyzer (XEGP) for CO, CO2, and SO2
Measurement, and Paramagnetic
Oxygen Analysis

The X-STREAM Enhanced series of gas analyzers features multichannel analysis utilizing infrared, ultraviolet and visible (NDIR/UV/
VIS) photometry, paramagnetic and electrochemi­ al oxygen, and
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thermal conductivity sensor technologies.