IAC offers several options for gas stream conditioning systems and technology for Hazardous Air Pollutants (HAP), National Emission Standards for Hazardous Air Pollutants (NESHAP), and Maximum Achievable Control Technology (MACT) standards compliance.

Dry Sorbent Injection (DSI) Systems for Flue Gas Desulphurization (FGD)

IAC designs and installs dry sorbent injection (DSI) systems, which are a type of dry scrubber, for flue gas desulphurization. We offer both engineering design and installation of new or replacement permanent sorbent gas stream conditioning systems, and temporary test rigs for analysis of current sorbent system effectiveness.

DSI Gas Stream Conditioning –


IAC offers permanent solutions to reduce Sox, SO2 and SO3, and HCI from boiler flue gasses with our permanent dry sorbent injection (DSI) equipment and systems.

We assist customers select proper injection points and choosing correct dry sorbent medium for maximum acid gas control efficiency. IAC provides equipment, installation, and employee training as a complete turnkey solution for your DSI requirements.

During this process, IAC’s DSI Systems inject dry sorbent into the flue gas after the boiler to reduce concentrations of acid gasses (SO2, HCI and HF). These are highly regulated gases that are linked to acid rain. With IAC’s Two-Step Process, the powdered sorbent is injected into the flue gas and the compound is removed downstream by the existing precipitator or baghouse.

DSI Gas Stream Conditioning –

Temporary Rigs for Full Scale Flue Gas Desulphurization Testing and Analysis

IAC offers customers cost effective, rentable mobile testing rigs backed up with expert field service support. This turnkey package provides customers our self-contained FGD Test Rig, trained technicians, data acquisition, and documentation equipment for continuous 24-hr. Acid Gas Mitigation Flue Gas analysis. After testing and analysis, IAC can recommend SO3 Mitigation strategies and equipment. Testing of multiple sorbents can provide multi-pollutant Acid Gas Mitigation for SO3, Hg, HCL, Dioxin, and others.


Permanent Sorbent Storage and Injection Equipment and Systems


Temporary Rigs for Full Scale Flue Gas Desulphurization Testing and Analysis

Semi-Dry Flue Gas Desulphurization (FGD) – Dual Fluid Nozz

IAC provides Semi-Dry FGD (SDA) Dual Fluid Nozzles Injection systems for Flue Gas – Acid Gas Mitigation. Complete testing, demonstration services, and equipment can be provided by IAC`s trained technicians utilizing our own self-contained Flue Gas Desulphurization Test Rig.

Selective Non-Catalytic Reduction (SNCR)

IAC’s Reduce your NOx emissions up to 70% using our SNCR services. Through the process of injecting Ammonia into the flue gas the NOx levels are reduced significantly at a lower cost than other reduction services.

Equipment and Services

Target Flue Gas Pollutants
  • SO2
  • SO3
  • NOx
  • Hg
  • HCL
  • HF
  • PM2.5
Equipment Technology Options
  • Dry Absorption Systems
  • Semi-Dry Absorption Systems
  • Wet Scrubber Systems
  • Dry Sorbent Injection
Gas Cooling Technology Options
  • Heat Exchange (air-to-air)
  • Evaporation Cooling
  • Dilution Air
Particulate Collector Technology Options
  • Baghouse (Fabric Filter Collector)
  • Wet ESP (Electrostatic Precipitator)
Spray Dryer (Dual Fluid Design) Technology Options
  • Dry FGD System
  • Semi Dry – Spray Dryer (dual fluid design)
  • Dry – Dry Sorbent Injection


The experts at IAC have been designing, building, and maintaining dust collectors and other industrial process systems for over 30 years. Let us earn your business too!