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Circul-Aire
DAS-Deep Bed Air Scrubber Flyer

DAS-Deep Bed Air Scrubber Flyer

Product catalog summary

Introduction
Industries such as pulp and paper, oil and gas refineries, and wastewater treatment face odor and corrosion issues due to airborne contaminants like hydrogen sulfide. These contaminants are malodorous, toxic, and volatile, necessitating effective odor control for community safety and regulatory compliance.

Circul-Aire's Profile
Circul-Aire specializes in air treatment products with over 35 years of experience, offering a range of air purification systems. Their reputation is built on research, development, and customer satisfaction.

Applications
The DAS systems are used in settings such as pulp and paper, incineration plants, oil and gas refineries, and waste transfer stations.

DAS Unique Benefits

Customized Solutions: Multiple media types for complex contaminant removal.
Engineered Versatility: Over 300 models available for various needs.
Single Source Responsibility: Complete system design and manufacturing by Circul-Aire.
Simplified Media Replacement: Replace only consumed media portions, reducing downtime.
Easier Access and Reduced Height: Horizontal design suitable for limited height applications.
Material Construction Versatility: Options include corrosion-protected mild steel, aluminum, or stainless steel.

Conventional Solutions
Traditional solutions include wet scrubbers for high concentrations and dry scrubbers like DAS for lower concentrations. DAS systems require minimal maintenance compared to wet scrubbers.

Features
The DAS system includes zinc-coated steel construction, multiple media beds, high-efficiency filters, and optional features like differential pressure monitoring and silencers.

Specifications

General: Systems must comply with standards such as ASHRAE, AMCA, and OSHA.
Unit Housing: Constructed from durable materials with sealed interfaces to prevent leakage.
Contaminant Removal Section: Includes pre-filters, chemical bed sections, and after-filters for efficient gas removal.

Media Types

MM-1000: Activated alumina with potassium permanganate for odor oxidation.
MM-1355: A mix for multiple gases.
MM-3000: Coal-based activated carbon for a wide range of contaminants.
MM-7000: Activated carbon with phosphoric acid for alkaline contaminants.
MM-9000: Activated carbon with potassium hydroxide for acid contaminants.

Specifications:
1. Supporting Steel Wire Grip: Must not exceed an initial resistance of 0.24" w.g. at 500 FPM.
2. Final Filters: Should be 12" deep with a MERV 14 efficiency as per ASHRAE Standard 52.2-1999. Filters must be UL Class 2, with a frame of at least 3/4" particle board and a 90% glass medium. Initial resistance should not exceed 0.55" w.g. at 500 FPM.
3. Pressure Gauges: Dwyer series 2000 magnehelic gauges are required across each particulate filter section and the entire media section, mounted in a single panel with color-coded CPVC tubing.

Fan Section:
1. Fan Types: Options include Backward Inclined (Plug Blower), Radial Blade Complete Blower Arrangements (Type LS), and Centrifugal Airfoil Fans (Type SISW). All fans must meet ANSI Standard S219-1989, Quality Grade G6.3.
2. Coatings: Fans should have a prime finish coat followed by two coats of corrosion-resistant aliphatic polyurethane finish.
3. Vibration Isolation Base: Fans and motors should be mounted on a structural steel base with vibration isolation features.
4. Guards: V-belt drives must be protected by OSHA-compliant guards.
5. V-Belt Drives: Must include a matched set of V-belt sheaves with a safety factor of 1.5 times the motor horsepower.
6. Fan Bearings: Bearings should have a minimum L10 life of 60,000 hours.

Controls:
1. Disconnect: The system should include a pre-wired NEMA-12 (4 or 4X) disconnect.
2. Motor Starter Panel: Should include a NEMA-12 (4 or 4X) enclosure with various control features.
3. Customized Controls: Available on demand, including air flow switches and PLC controllers.

Optional Components:
Includes ARI certified cooling/heating coils, CSA and ETL certified electric coils, air-to-air heat exchangers, gas monitors, and more.

Tables:
1. Filter Requirements: Details on air flow, media volume, and filter quantities for different models.
2. Design Pressure Drop: Provides pressure drop data at 75 FPM face velocity.
3. Motor Performance: Lists motor specifications for 60 Hz and 50 Hz high-efficiency motors.
4. Fan Performance: Typical performance data for fans with different media bed configurations.

Overview: The document provides technical specifications and details for various models of plug blower and fan assemblies, focusing on draw-through and blow-through arrangements. It includes tables with dimensions, air flow capacities, and weights for different models, as well as descriptions of additional services and products offered by Circul-Aire.

Specifications: The document contains detailed tables (Table 7 and Table 8) listing models with their respective air flow capacities in CFM and M3/HR, dimensions in inches and millimeters, and weights in pounds and kilograms. The tables specify that weights are based on zinc-coated steel and stainless steel construction, with a conversion factor for aluminum construction.

Procedures and Recommendations: The document outlines procedures for calculating weights for aluminum construction by multiplying the zinc-coated steel weight by 0.65. It also provides guidelines for adding length per additional bed in the assemblies, with a maximum of three beds total.

Additional Services: Circul-Aire offers the MULTI-MIX® media, which combines activated carbon and chemically enhanced alumina for air purification. The TECH-CHEKTM Program provides media analysis and replacement schedules. The Reactivity Monitoring Service (REMO) and SURVEYOR® offer environmental monitoring and corrosion level diagnosis. The Sealing Integrity Verification (SIV) assesses room sealing and leakage.

Visual Aids: The document includes plan and elevation views of the plug blower and fan assemblies, illustrating media loading doors, air flow directions, and access points.

Contact Information: Circul-Aire's contact details are provided, including addresses in Georgia, USA, and Quebec, Canada, along with phone and fax numbers.

Catalog excerpts

DRY SCRUBBERS FOR HIGH CONCENTRATIONS OF ODORS & CORROSIVE CONTAMINANTS FOR MUNICIPAL & INDUSTRIAL AIR PURIFICATION

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CIRCUL-AIRE^ PROFILE Circulaire has over 35 years of exprience in the odvanced technology gas phase fittration field. Circul-Aire is a manufacturing company specialiied in air treatment products. Circul-Aire designs and manufactures a complte line of air purification Systems and qffers a compl騨te range of services, including the chemical mdia analysis TECH-CHEIC Program* The Company's rputation hos been built on years of research and development and on growing numbers of satisfied customers. Circut-Aire's laboratory offers product quality control ond research on sp驩cifie environmental problems....

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DAS UNIQUE BENEFTTS ■ THE CONVENTIONAL SOLUTIONS Traditional solutions used for odor and corrosion problems consist of two types of Systems: wet scrubbers and dry scrubbers. Wet scrubbers are typcally large towers utlizing chemical solutions to neutralize the odors. Thﮨse types of Systems are used in cases of very high concentrations (greater than 20 ppm) in order to reduce contaminant loads. Wet scrubbers require a major investment and substantial maintenance costs. Creul-Aire's Oeep Bed Air Systems (DAS) are smaller dry scrubbers filled with granular MULT1-MIX® mdia. Smaller concentrations...

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H^^H -CIRCUL AIRE'S DAS... THE SOLUTION TO ODOR & CORROSION CONTROL ■ FEATURES Zinc coated steel protected by a three-coat corrosion rթsistant paint» 30% efficiency (MERV 6) 2" pre-filter. Օ Up to three MULTI-MIX' mdia beds for odor and corrosion control- 30% efficiency (MERV 6) 2" after-f镯lter. 90% efficiency (MERV 14) 12" final filter. Օ Backward inclined plug blower or single inlet centrifugal blower. Perforated staծnless steel 316 mdia section. Bulk m镩dia fillng port. Bulk mdia discharge gte (optional vacuum port). Full size hinged access doors. ╕ High pressure stainless steel screw-on...

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OPTIONS AVAILABLE Optծonal Dfferential Pressure Monitoring System (DPMS). Optional prewired control panel c/w disconnect  Optonal Silencers. Optional temprature sensors. Ftg C: DAS 316SS 3-Stage System dtail ofloading access doors.

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DAS NOMENCLATURE EXAMPLE.: DEEP BED MODEL: DAS-504-3D12ZC DAS 12 ZC > Construction Mate ri al ZC - Zinc Coated Steel with a Corrosion Rթsistant Paint AL - Aluminum SS- Staintess Steel Chemical Media Bed Thickness Օ Deep Bed System Quantity of Deep Beds Օ Nominal Width (feet) 0 or Blank for Systems 10, 11 or 12 Feet Wide (e,g. DAS-510) Օ Nominal Height (feet) Deep Bed Air System The System is nominally 5 feet high by 4 feet wide with three 12" chemical mթdia beds manufactured from zinc coated steel complte with a corrosion rsistant paint

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DAS SPECIFICATIONS ■ GENERAL 1.1 Provide a Circul-Are model DAS factory-fabricated gas phase air purification System or equal sutable in design for the removal of both organic and inorganic contaminants as indicat-cd on the schedule and drawing. 1.2 The unit manufacturer shall have been engaged in the fabrication and design of air control Systems for no less than the last ten years. Strict adhrence to sizes and capacities shall be maintained. Any dviation from the sp驩cifications must be approved by the engineer's office no less than ten days prior to the project bd date. No considration of amentes...

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DAS SPECIFICATIONS 2.8 Lifting lugs shall be added to the ■rame so the unit can be lifted evenly without deflection. 2.9 Internai and external zinc coated steel surfaces shall be coated with a three-part corrosion rsistant aliphatic polyurethane finish. Applications System shall consist of one prime coat (1 mil minimum) applied over a xylene cleaned surlace followed by two fn鯯shing coats. Each finishng shall be 1 mil minimum. Final coating shall provide excellent rsistance to moisture and traces of acid gases or alkali fumes, sait air or solvent, for tempratures up to 180°F. Standard System...

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DAS SPECIFICATIONS MM-3O0O The MULTI-MK® MM-30OO shall be UL Class 1 nonflammable and consists of a coal based activated carbon of 1/8" diameter extruded cylinders. Physical adsorption removes the gas molcules, which is a fonn of condensation. Activated carbon is used for a wide range of contaminants with higher affinity to sp魩cifie gases. MM-7000 The MULTI-MIX® MM-7000 is manu-factured in 1/8" diameter extruded cylinders and consists of activated carbon impregnated with phosphoric acid. Phosphoric acid is impregnated into the carbon to provide enhanced efficiency and capacity for alkaline contaminants,...

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DAS SPECIFICATIONS 4.1.C Centrifugal AirfoU Fans (Type SISW) The fan wheel design shaU be of a non-overloading type backward curved double surface airfbil section. The complte fan wheel shall be of welded construction and the wheel and shaft assembly shali be dynamically bal- anced to ANSI Standard S219-1989, Quality Grade G6.3. Fan shafts shall be designed so as to operate at no more than 80% of the first critical speed range. The fan housing shall be constructed of heavy gauge steel suit- able for the CLASS duty. AU seams and joints are to be continuously welded to eliminate leakage. AU centrifugal...

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DAS DIMENSIONS Tobit 7 - PLUG BLOWR TYPE - ORAW-THROUGH & BlOW-THROUGH ARRANGEMENTS Add 12" (10* mm) in lamgth pet addition*! bed: maximum 3 bedi total CF Comutt Factory ■ MEDIA NOT 1NCLU0IO Sae bollom of Table 1 for mϩdia «vighlv VMqhH bat*d or» fine coated rt*el and suintas sttat conttructfon. Sm Mo» fof alumlrtum construction itvtghtv UUHINUM CONSTRUCTION WICHT Ma40pty me <o*tad toi «ri** In table by 0.65. Ewapte Oto*oe. Hnc taated ml wffghtfto« tab*> te *MO ht-tt»ha0.» - 1») aajnrinjm construction. iabe prnrtitd wpo* «ue«

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DAS - PLUG BLOWER ASSEMBLY - DRAW-THROUGH ARRANGEMENT aClRCUL-AlRE Access provided on both sides for Systems wider than 6 feet AIR FLOW MEDIA LOAOING DQQR K ,__"mfׯ! PUn Viw MtDIA MEDIA C1LLING FILiiNC. MEDIA i r ACCESS non AIR FLOW y- II AIR FLOW □ M) MEDIA DISCHARGE GATE

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