Reducing emissions of harmful pollutants, especially carbon, is a major concern for all industries. We explain how gas analysis helps create cleaner and more efficient air solutions for processes, helping factory operators achieve their emissions reduction goals. We have divided our approach into three phases, showing how addressing each phase will contribute to creating a better environment for us all.

COMBUSTION EFFECT [GIAI ĐOẠN MỘT]

The combustion reaction mixes the fuel with oxygen (from the air), providing heat energy that can be transferred elsewhere in the process. Typically, this requires a significant amount of fuel, poses safety risks, and produces toxic emissions. Optimizing the air to fuel ratio provides the most efficient response. During the period before gas analysis, the combustion heater was run under high excess air conditions. This is inefficient and increases fuel consumption but avoids creating unsafe conditions that could lead to an explosion. Excess oxygen (O2) will combine with nitrogen and sulfur in the fuel to create unwanted emissions such as nitrogen oxides (NOx) and sulfur (SOx). Accurate gas analysis of O2 and combustibles such as carbon monoxide (CO) has provided better methods of balancing the air-fuel ratio and controlling the combustion reaction. Controlled combustion offers many benefits to plants looking to meet environmental standards. Fuel consumption is reduced and safety is improved. It also results in fewer emissions, reducing NOx, SOx and CO and reducing the greenhouse gas carbon dioxide (CO2).

ANALYZER USED IN PHASE ONE

SERVOTOUGH FluegasExact 2700

Designed to measure O2 and COe in flue gas to improve combustion efficiency and reduce emissions, the SERVOTOUGH FluegasExact 2700 gas analyzer meets the most demanding needs of combustion efficiency applications in manufacturing industries. and electricity processing. It uses reliable Zirconia technology for O2 sensing and sulfur-resistant combustibles sensing, all in one compact combustion gas analyzer.

KEY BENEFITS

• Unique Flowcube technology allows confirmation of positive flow conditions, allowing for preventative maintenance and low flow alerts
• Designed for hazardous conditions, has a hazard rating to ATEX Cat. 3, IECEx Zone 2 North America Class 1, Division 2
• The tightly coupled extraction measuring principle ensures long sensor life by keeping the sensors out of harsh processing conditions, in a heated enclosure.

SERVOTOUGH Burn Laser 3 Plus

Optimized for fast, accurate and responsive measurements in combustion and process control, the SERVOTOUGH Laser 3 Plus Combustion offers unprecedented installation flexibility along with cost benefits. cost and performance, all in a compact, lightweight device. Using a highly specific TDL sensor to measure O2 or CO, the sensor can also be configured to jointly measure CO and methane, providing fast response measurement for safety.

KEY BENEFITS

• Servomex’s unique flow-lock cuvette technology ensures the Laser 3 Plus Combustion continues to reliably measure the required gas volume
• Compact analyzer can be easily installed by a single engineer, with an onboard display eliminating the need for laptop configuration
• Along with ATEX, IECEx and North American hazardous area approvals, it is also Zone 2 process approved, SIL 2 rated and CE marked

AIR CLEANING SOLUTIONS [PHASE HAI]

Gas cleaning is the removal of harmful substances from process gases that the plant may emit. Typical applications include

• DeNOx treatment (slip ammonia)
• Desulfurization of flue gas
• Carbon capture and storage

AMMONIA SLIP

Ammonia (NH3) or urea is used to suppress harmful NOx emissions from combustion, in the Selective Catalytic Reduction (SCR) or Selective Non-catalytic Reduction (SNCR) process. These methods require precise NH3 dosing to reduce NOx levels – insufficient NH3 will not adequately prevent NOx emissions, while too much NH3 can lead to the formation of ammonium bisulfate (ABS). ABS is a white powder that can plug catalysts into SCR processes, causing equipment damage and reducing the value of fly ash byproducts, so it is important that plants manage the DeNOx process effectively, controlling ammonia slip levels between 2- 3 parts per million NH3.

WHAT ANALYZER IS USED IN THE Ammonia SLIP PROCESS

SERVOTOUGH Laser 3 Plus Environmental

Ammonia (HN3) can be monitored by extract sampling, but the sample must be kept above 554 F (290C) to prevent the formation of ABS and sulfuric acid. It offers installation flexibility as well as cost and performance benefits over the rest of the Laser 3 Plus series, including automatic validation software to ensure continued accuracy.

Desulfurization of flue gas

Flue gas desulfurization (FGD) systems remove sulfur compounds (SOx, primarily sulfur dioxide) from exhaust gases. It is commonly used by fossil fuel power plants and operators in other SOx-emitting processes, such as waste incineration. Typically, the exhaust gas is sprayed with a layer of wet lime to remove up to 95% of the sulfur dioxide (SO2) content from the gas. A gas analyzer measures the SO2 content after this treatment to check that any remaining sulfur compounds are within regulatory limits.