Project: 30,000 CFM Packed Bed Scrubber Removes 98% of Acid Fumes and Toxic Compounds from Manufacturing Operations. A leading semiconductor supplier needed to reduce acid emissions generated by their chip cleaning and manufacturing operations. Gas flow rate. Ozone can help maintain a clean and efficient wet scrubber by ensuring there is oxygen in the waste water stream of the scrubber. The Acid Fume Separator (AFS) is a proprietary device that allows for direct venting of an acid tank located inside a mechanical room. By using these mesh pads in a multi staged set-up, within a Horizontal Scrubber, Chrome scrubbing efficiency greater than 99% can be achieved. When the set point is reached the chemistry is automatically metered into the reservoir to ensure proper treatment of the gas stream. This vacuum will render the hoods and other fume capture systems inefficient as negative pressure in the process area will prevent the fumes from entering the hoods and allow them to linger in the process area. The use of Ozone can reduce the consumption of chemicals used during the wet scrubber phase. Quality-built, Rugged Design for the Galvanizing Environment Corrosion Resistant Materials and Construction Utilizes Wetted, Packed-bed Technology Removes Water Soluble Contaminants, Soluble Gas, and Particulate Matter Contaminants are removed by Impingement and Gas Absorption *Impingement: Particulate matter is forced through a wetted packed bed, then through a chevron blade … Mech-Chem offers a large variety of Hoods Duct and Fittings. Stripping Towers – Packed bed tower aeration offers an effective and economical approach to reducing VOC contamination in liquids. Tri-Mer’s minimum design requirement is 95% on 10 Their familiarity with Industrial Production techniques as well as all types of Chemical Processes allow them to come up a design to fit your needs. Some buildings are designed to carry the weight of the Blower and Stack needed for the Ventilation System while other facilities cannot bear the extra load and need to mount the Stack at ground level. Automated Back Draft Dampeners can also be installed to prevent air from the outside atmosphere to be drawn back through the ventilation system. The system introduces water or a specific scrubbing solution through a submerged plenum. Mech-Chem is capable of dealing with all of your Ammonia Scrubber needs. Elimination of odors and chemical fumes protect the surrounding area, keeping parts and materials free of chemical residue that may effect the finish product. Our Fume Scrubbers are available in horizontal (crossflow) or vertical (countercurrent) configurations, depending on your facility’s layout and space limitations. Mech-Chem will also layout and develop any documentation, from calculations to efficiency rates, needed to assist in the Permitting procedure. We also offer secondary containment for the Drums or totes to sit on in case of any leaks or failures. The Technicians are certified in Confined Space Entry, Lock Out / Tag Out, OSHA 10, CPR, AED and First Aid, Fall Protection, PPE, and Hazard Communication. These vessels (Drums or Totes), as well as contaminants, can be monitored with level controls setup to detect and alarm if a vessel is empty or a containment is starting to fill with liquid. The Panels also have all the needed power requirements and controls such as fuses, motor starters, overloads, step down (480V to 120V) transformers, 24 Volt DC Power Supply and more. Design for h 2S removal with other contaminants. To properly scrub Chrome, mesh pads are used to create separation of the Chrome laden vapor from the air stream on contact. Calculating this overall flow starts with the Hoods. Stripping Towers – Packed bed tower aeration offers an effective and economical approach to reducing VOC contamination in liquids. UL representatives perform site inspections of the Shop as well as the Panels to verify that all UL standards and requirements are met. This fume scrubber was constructed of Hastelloy C-276 with all explosion proof instrumentation and controls. KCH designs, manufactures, and installs a variety of corrosion resistant scrubber systems for many applications requiring control of Hazardous Air Pollutants (HAPs) or control of noxious odors. Although scrubbers are a low maintenance item, this services is also highly recommended to schedule in order to prevent any unscheduled down time and loss of production. Mech-Chem has designed, built and installed scrubbers to handle fumes and particulates that are generated from radioactive processes. This packed bed chamber is wetted with a chemical reagent (or water) via spray nozzles inside the tower. It protects the user and the environment not only by neutralizing the poisonous fumes and reaction gases but also by minimizing the use of cooling water. The standard FHS series unit is capable of removing up to 99% of acidic contaminants up to 500 PPM. TFI Inline Design manufactures all-plastic laboratory equipment including casework, fume scrubbers, fans, fume hoods and neutralization systems that provide improved laboratory performance, aesthetics and longevity while ensuring a safe environment for lab staff and customers. These scrubbers can be Vertical or Horizontal in orientation all depending on the facility’s needs and location of the unit. The amount of packing, size / diameter of tower, water circulation rate, blowdown and static pressure are all calculated based on the facility’s ventilation requirements. RP1 insures molecular contact between the gas or fume being scrubbed and the ionized salts in a way that insures reliable, low limit performance. All of our scrubber & ventilation air handling systems can be custom designed to fully integrate into your current facility and operating needs. The AFS eliminates the need for costly venting to outside areas or secondary water tanks. These scrubbers are economical, reliable, and require very little maintenance. I am looking for guidance / correction on my design approach. Mech-Chem also specializes in complete installation or disassembly of fume scrubber systems. Venturi scrubbers are capable of handling airborne particulates in exhaust streams with high efficiency. Polypropylene and PVC Inline® Fume Scubbers TFI/Inline Design VS Series Fume Scrubbers in Polypropylene or PVC are designed for laboratories and any point of use application that requires removal of acid vapors from exhausted air. Mech-Chem has the ability to design, purchase and install a Back-Up Generator or interface with an existing unit. The size of the Hood slot openings combined with the size and style of fabrication determine the draw from the surface of the tank. Chemical Scrubbers. This diversity of expertise allows Mech-Chem’s staff to deal with any needs our customer may require. by . The second stage is typically washed down every 24 hours. The acid in the air dissolves in the solution and is neutralized. Reagent Chemistry Drum or Tote Containment, Level Control Monitoring of Reagent Chemistry Drums, Monitoring of any leaks or liquid build up in containments, Chemically treating the Scrubber to dissolve Solids or eliminate Bacterial build up in the packing, Velocity Measurements, Static Pressure and Smoke Capture testing, Calibration of all instrumentation (pH, ORP, Level, Flow, etc. DESIGN | ENGINEERING | FABRICATION | INSTALLATION. We design all the electrical equipment and wiring to be intrinsically safe. Captures and neutralizes acid fumes allowing acid tanks to be completely sealed. Hcl Fume Scrubber Design - posted in Industrial Professionals: Hi, I am currently designing a wet scrubber to remove acid fumes. Mech-Chem engineers, designs and manufactures high quality Ammonia Scrubbers that operate at or above the required removal efficiency. The Screens will also display any alarms that occur. Mech-Chem designs, fabricates and installs Chrome Scrubbers for all types of Chrome applications including Anodizing Chrome, Chrome Etching, Chrome Manufacturing, Chrome Plating, Chrome Stripping, Decorative Chrome Plating and Hard Chrome Plating. For wet scrubbers used to control acid gas emissions, monitoring scrubber liquid pH is an adequate surrogate for scrubber liquid outlet concentration. A fume scrubber is recommended for an acid storage tank system. Refillable media turns from white to pink when it's time to be replaced. A scrubber is used to "scrub" exhaust streams of unwanted solids, liquids, or gas particles before they are released into the atmosphere. Allen-Bradley is our standard PLC model but we offer almost any style of unit to meet the facilities requirement (Siemens, Mitsubishi, GE Fanuc, Omron, etc.). Inside the tank are water spray nozzles. 2020 ProMinent Fluid Controls, Inc. All rights reserved. Fume Scrubbers . The gas contaminants are adsorbed into the liquid. The way Mech-Chem designs the hoods, ventilation duct work and fittings, as well as sizes the static pressure and CFM of the Blower, helps achieve the overall flow required through the Ventilation System. Mech-Chem applies the UL Listing Mark to its Panels and Back Panels indicating that the integrity of UL’s safety level, as well as its safety integrity, was adhered to. Dust collectors are featured with removal filter bag cartridges allowing for continuous operation without the need of operation shutdown. Custom fume hoods & manifold systems are designed to extract hazardous airflow fumes away from the working area, providing a safe & healthy environment. Some of the acids that Mech-Chem has engineered and fabricated Acid Scrubbers for include: • Nitric Acid (HNO3) Additionally, we offer complete installations, start up and training at your facility. Mech-Chem also verifies that all equipment meets the explosion proof requirements established for the area. A Chrome Scrubber is also fabricated so each of the three mesh pad stages drains into its own reservoir. Mech-Chem understands the materials of construction, equipment and even duct work and fittings that Factory Mutual has approved and incorporates these specifications into the design. New standards for hydrochloric acid emissions are expected to be proposed by the EPA soon, and these will affect the design of scrubbers for pickle line fume exhaust systems. If the room has an inadequate amount of Make-Up Air a slight vacuum will be created in the area. Increasing the static pressure in the Scrubber, or raising the flow rate of the Scrubber in a process area that has a lack of proper make-up air, will not rectify the situation and in fact will only increase the problem. reagent is no longer effective. We are able to fabricate panels that meet the explosion proof rating. Panels can be built either using relay logic or PLC Controlled. Push Air Systems are designed to direct fumes and vapor towards the ventilation Hoods in order to maximize the capture of these gases. The fume scrubber handles solvent fumes containing HF, HCl, and HNO3 acids. Let Pollution Systems design a Wet Ammonia Scrubber customized to match your precise application and process. The majority of scrubbers function using adsorption, which involves the contact of a gas stream with an aqueous solution, due to the fact that the Chrome exists in the mist droplets, and not as a gas, the adsorption method is not effective. ProMinent Fluid Controls, Inc. It is hoped that the result of this paper will be to provide an easy to follow manual on wet scrubber design suitable for use . Access doors on the side of the Scrubber are oriented in such a way as to allow the packing to be easily inserted during installation while keeping in mind that the packing may have to be replaced in the future. Mech-Chem also has on staff Chemical Engineers which perform calculations based on the amount of chemistry that will be drawn into the Ventilation System. Mech-Chem has a highly skilled staff of Engineers educated in all fields of Engineering (Mechanical, Electrical, Structural, Chemical, Etc.). Mech-Chem offers duct work and fittings manufactured from several different types of material all capable of meeting and being field labeled as FM Approved. These scrubbers can be custom designed to meet your facilities specific needs and are designed for long operating life, energy efficiency and minimal maintenance requirements. The blow down times for the different stages can be changed depending on the amount of production and flow rate through the scrubber. The most common type of scrubber is a wet scrubber. The concentration of acidic gases is directly related to the vapor pressure of the acid in aqueous solution. Pittsburgh, PA 15275, ph: 412-787-2484 Mist eliminators Mist elimination is a critical part of wet scrubber design. We offer complete packages, including instrumentation and controls, skid-mounting of equipment, caustic storage tank and metering pump, and installation. Mech-Chem has an extensive knowledge of Ventilation System operation, from the Process Tanks to the discharge of the Stack. Mech-Chem designs builds and installs Scrubbers to handle all types of chemical fumes. Mech-Chem has designed and installed many wet scrubbers for customers in a variety of industries. perform under the most demanding corrosive environmental conditions. Carbon adsorbers are designed for high efficiency removal of oil vapors, H2S and other odors, VOCs and other gas phase hydrocarbons. Make-Up air systems need to be designed to meet the customer’s needs, requirements of the Ventilation System and outdoor climate conditions. General overview of the entire system to identify any areas that may need to be repaired or replaced. The AFS eliminates the need for costly venting to outside areas or secondary water tanks. Acid Fume extraction system Designed for Zero Discharge and Clean Air Emission Acid fume capture and abatement is a significant aspect in every hot dip galvanizing plant. Acid processing industries often generate fumes that need to be neutralized and reduced to a harmless vapor before discharge to the atmosphere. Benefits. We design and manufacture com-plete Wet Ammonia Scrubber systems, including all necessary equipment such as system fans, pumps, exhaust stack, and instru-mentation & controls. The scrubber will be connected to the vent of a 10000 liter HCl storage tank and is meant to operate during unloading of HCl from tanker to the storage. Tubing, depending on location and length of run, is double contained by running it through a clear PVC Pipe. Mech-Chem accomplishes this method of Emergency Operation in several ways depending on the style of Panel controlling the Scrubber (Relay Logic or PLC). We make sure the circulation pumps, instrumentation, access doors and other critical equipment or controls are laid out for easy access and maintenance. The FHS series integrates a counter current scrubber with a traditional fumehood design to reduce space requirements, eliminate the need for a remote scrubber and significantly reduce installation and maintenance costs. Ammonia Scrubber System -back view . NOx scrubbers systems are designed to scrub any NOx fumes, colorless & colorized (brown/orange) plumb, and eliminate any Hydrogen Sulfide (H2S) odors. 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