air scrubber Applications

Odor Control in Air Scrubbers

Air scrubber wastewater solution

Air Scrubbers strip out contaminants from exhaust stacks typically by trickling a stream of salt solution through a bed of media to extract contaminants by putting them into solution. The salts found in these solutions are typically sulfates, chlorides, and carbonates. Air Scrubber wastewater tends to have high total dissolved solids (TDS) or salts. Air Scrubber Wastewater cannot be simply flushed down the drain. Many companies choose to avoid the headaches of labor-intensive wastewater treatment technologies such as chemical treatment or filtration and simply pay to haul the wastewater. This however, can become quite expensive.

Cement

MEGTEC's extensive scrubber experience applies to the cement manufacturing process for the effective control of SO2 and HCl by the injection of lime slurry. Our customers can achieve up to 90% reduction of SO2 and 98% reduction of HCl using microfine or standard lime. The TurboSorb Spray Dryer Absorber (SDA) can often retrofit into an existing gas conditioning tower, or downcomer duct, to avoid the high cost of new capital equipment.

Chemical and Pharmaceutical Solutions

The application of VOC emission control equipment for the chemical and pharmaceutical industries requires a thorough knowledge and understanding of the customer's process and requirements, and having the ability to offer custom solutions. MEGTEC has years of experience in finding solutions to support the chemical industries worldwide. with our range of solutions including scrubbers and wet electrostatic precipitators, carbon adsorption systems for solvent recovery, distillation and purification equipment, and thermal oxidation systems.

Applications and Air Pollutants Removed for Wastewater Treatment Operations

For industrial and municipal treatment plants; Chemical scrubbers, biological towers and adsorption systems to remove hydrogen sulfide, mercaptans, other organic sulfur compounds and ammonia from digesters, pump stations, ponds, grit and screening works, sludge filter presses and dryers. Special Wet Electrostatic Precipitator for sewage sludge incinerators. Stripping ammonia and other volatile compounds. Decarbonization removal of carbon dioxide from wastewater.

Applications and Air Pollutants Removed in the Fertilizer Industry

Wet Scrubbers, dry collectors, wet electrostatic precipitators and complete engineered systems for urea, MAP, DAP, TSP and AN Plant rotary dryers and coolers, reactors and ammoniation granulators, pug mills, rock acidulation, curing, storage and material handling operations to control emissions of: particulate, including phosphate rock dust, ammonium phosphate, ammonia, nitric acid, NOx, phosphoric acid, hydrogen fluoride, silicon tetrafluoride, sulfuric acid, removal. Complete systems for scrubbing and recovery/reconcentration of fluorosilicic acid up to 25% concentration.

Simultaneous Air Monitoring over Multiple Fixed Sample Paths

Application: Simultaneous monitoring over multiple fixed sample paths either in-situ, extractive, or open path. Example: HF scrubber inlet, outlet, and stack monitoring in primary aluminum smelter.

Dust collection and odor control in waste management sites

Th turn key plant is composed by three different wet stages. The first stage is a venturi jet scrubber to collect dust and particles, then the second and third stages are deputed to absorb bad smells, such as H2S, Ammonia and Ammines. The absorption takes place thanks to the injection of chemicals (such as Sulphuric Acid, Sodium Hypochlorite and Sodium hydroxide.

Applications and Air Pollutants Removed in the Metal Mining Industry

Complete line of wet scrubbers for all metals mining applications. Scrubbers for removal of acid gases, particulate and mists from acidulation, reaction tanks and dryers. Sulfuric acid, sulfur dioxide, ammonia and hydrogen cyanide removal. Control of micron and submicron size particulate metal fumes from rotary furnaces.   

Applications and Air Pollutants Removed in the Biomass Industry

Flue gas particulate and acid gases from biomass and bagasse boilers. Removal of ethanol, CO2 scrubbers and yeast cells from fermenters.  Removal of ash particulate, tars, acid gases and ammonia from steam reformers, gasifiers, pyrolosis units and cooling of syngas streams to acceptable limits to enable use as a fuel source for power generation or as a feedstock for chemical products. For tar removal, combination technologies can be used including oil based scrubbing solutions to reduce waste water generation. Ethanol and yeast cell removal from fermenter off-gases. Methanol from processing operations. Hydrogen sulfide removal on landfill, digester and producer gases with regenerable chemistries. Odor control for biomass storage facilities including carbon monoxide removal in wood chip storage areas. 

Applications and Air Pollutants Removed in the Energy (Power) Industry

Wet scrubbers and Wet electrostatic precipitators for removal of sulfur dioxide and trioxide, ash particulate, NOx and mercury from coal fired boilers. Sulfur dioxide, NOx and particulate from oil fired boilers and diesel engines. Ash particulate from Biomass boilers including Bagasse type. Complete scrubber systems for sulfur dioxide removal using lime, limestone to gypsum quality and all sodium, magnesium and potassium chemistry scrubbing solutions including ammonia for ammonium sulfate production. For gypsum production, complete air sparging oxidation systems are incorporated in the scrubbers along with all needed auxiliary equipment. Waste Heat Recovery options with Q-Sense direct contact heat exchanger technology.  

Applications and Air Pollutants Removed in the Food Products Industry

Complete line of dry and wet collectors for applications requiring removal of particulate from dryers, mixers, blenders and tanks. Odor control wet chemical scrubbers with liquid or gas phase oxidation chemistries and Bioscrubber systems to control odoriferous food products, ingredients and flavor emissions from processes and dryers including fish odors. Corn acidulation and starch processing acid and ethylene oxide emissions. Remove smoke house emissions and particulate, grease and odors from meat cookers and fryers. Ethanol emissions from baking ovens. Ammonia from refrigerant evacuation. Sodium hydroxide mists from CIP cleaning of tanks and equipment. Waste heat recovery and more. 

Applications and Air Pollutants Removed in the Petroleum/Petrochemical Industry

Scrubbing of Hydrogen sulfide, mercaptans and other organosulfur compounds from sour gas and other sources. Proprietary regenerative scrubbing chemistries for hydrogen sulfide removal with sulfur production. By-product production systems for producing sodium hydrosulfide (Nash) from hydrogen sulfide. Sulfur dioxide scrubbing. Recover catalyst dust from FCC units. HCL storage tank vent scrubbing. Removal of HCL and particulate from thermal oxidizers burning chlorinated plastics. Marine drilling platforms sulfur dioxide thermal oxidizer emissions.  Asphalt plant scrubbers and hydrogen sulfide emissions from holding tanks. Pilot plant scrubber systems for hydrogen sulfide. Removal of halogenated and sulfur bearing gaseous compounds from high temperature thermal oxidizers and drilling platforms waste. Well drilling hydrochloric acid storage tanks.

Applications and Air Pollutants Removed in the Chemical, Pharmaceutical and Plastics Industries

Supplying for over 35 years reliable air pollution control equipment and systems for removal of all gaseous compounds, particulate and odors from chemical process operations, reactors, dryers, calciners, membrane cells, pharmaceutical reactors and tablet dryers, crystallizers, vessel filling and storage vent emissions, emergency scrubbing of high concentration gas releases from cylinders, vacuum pump emissions, Quench /scrubber systems for acid gases and particulate from high temperature thermal oxidizers.  Gaseous emissions from piloting operations and research lab hoods. Specialty NOx abatement for explosives manufacturing and other process operations. Recovery and re-concentration of acids and other gaseous contaminants including by-product production.

Applications and Air Pollutants Removed in Municipal Water Treatment Plants

Applications include: emergency chlorine scrubber systems for cylinder storage area. Removal of powdered carbon particulate emitted from storage silo vents during the loading operation. 

Applications and Air Pollutants Removed in Hazardous, Solid and Liquid Waste Treatment Operations

Venturi scrubbers with FORCE FLUX Condensation technology and Wet Electrostatic Precipitators for industrial, municipal, sewage sludge and pathological waste incinerators to remove micron, submicron particulate, heavy metals and acid gases. Special quencher/scrubber systems for dioxin removal. HCL scrubbing from PVC plastic waste burning. Fine particulate, acid gases and NOx removal on munitions destruction. Cleanup of all pollutants from liquid waste incinerators and other high temperature destruction processes. Acid and particulate emissions from electronic board and metals recovery operations.

Gas monitoring instruments and systems for semiconductor manufacturing

In the semiconductor manufacturing industry, various perfluorinated compounds (PFCs) are used. The emissions of the PFC compounds into the ambient air are reduced by scrubbing of the exhaust gases from the process. In this process, the Gasmet™ FTIR Gas Analyzers can be used to measure the emissions into the atmosphere and also monitor the efficiency of the scrubbers. Typically monitored PFCs in the exhaust gas include carbon tetrafluoride CF4, trifluoromethane CHF3, and hexafluoroethane C2F6.