J-5 INCINER8 LATAM FINAL DESIGN DOCUMENTS.pdf
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- Solicitation number
- PR16129583
- Issued by
-
Department of State
About this file
This is a technical design document for an incinerator combustion gas conditioning and control system for the Embassy of the United States of America in Costa Rica. The document presents the final design of a centrifugal scrubber system prepared by ATSG Corporation (contractor) through INCINER8 LATAM, dated May 2026, with project managers José Pablo Araya and Sofía Sánchez overseeing the implementation in Costa Rica.
The incinerator is a Pennram Brand Industrial Model C-750 unit (Serial No. 220008) with a 350 kg/h capacity manufactured in September 2020. The combustion gases generated from incineration of special waste including psychoactive substances are produced at approximately 940°C containing particulate matter and acidic compounds (HCl, HF, SO₂, NOx) requiring treatment before emission. The design specifies a three-stage process: Stage 1 and 2 involve thermal oxidation in primary and secondary chambers, while Stage 3 implements a centrifugal scrubber for chemical neutralization. Based on sampling data from March 2026, the design flue gas flow rate is 4.3 m³/s at 218.84°C. The centrifugal scrubber is dimensioned at 1,424 mm diameter with a height of 5,694 mm, featuring 12 spray nozzles (Acodinsa NCS1003 type) operating at 10 psi with a total water supply of 1.2 L/s (18.4 gal/min). The system requires calcium hydroxide solution (3-8% concentration) for neutralization, auxiliary equipment including a water pump capable of handling 18.4 gal/min, a sedimentation tank with 8.7 m³ capacity (1.5 m height × 2.0 m width × 3.0 m length), and a mist eliminator to capture microscopic droplets before gas discharge. The document notes that the existing baghouse filter will become inoperative and will be replaced by this scrubber system, with INCINER8 LATINOAMÉRICA S.A. offering proposals for either equipment manufacturing from Guatemala with local installation or direct supervision and installation in Costa Rica with locally recommended contractors.
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SSPINN WASHINGG MACHINEE MAYY 20266
FINAL DESIGN | INCINERATORR COMBUSTIONN GASS
CONDITIONINGG ANDD CONTROLL SYSTEMM ––
EMBASSYY OFF THEE UNITEDD STATESS OFF AMERICAA –
COSTAA RICA
Drug Incinerator Operations Advisor
Contractor - ATSG Corporation
ATSG CARSI
Costa Rica – Central America
Guatemala, May 20266 Prepared by
SSYSTEMM ANDD CONTROLL EQUIPMENTT DESIGNN –– INCINER88 LATAMM
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1. CONTENTS
1. CONTENTS
Image 1. Centrifugal Washer (images for illustrative purposes) 7
Image 2. Centrifugal Washer (image for illustrative purposes) 8
Image 3. Nomenclature for Centrifugal Washer Design (images for illustrative purposes) 8
Image 4. Spray Nozzle 11
Image 5. Nozzle Configuration for Dispersion System 11
Image 6. Mist Eliminator 12
Image 7. Schematic of the Basic Components of the Control System 13
Image 8. Water Recirculation and Treatment System (image for illustrative purposes) 14
Image 9. Sedimentation and Water Supply Tank 15
2. BACKGROUND
3. PROJECT OVERVIEW
3.1. INCINERATOR EQUIPMENT WITH PRIMARY AND SECONDARY CHAMBER
4. OBJECTIVE
5. SCOPE
6. AVAILABLE INFORMATION
DESIGN DATA
DESIGN
CENTRIFUGAL SCRUBBER (IMAGES FOR ILLUSTRATIVE PURPOSES)
AUXILIARY EQUIPMENT
a) WATER PUMP
b) WATER RECIRCULATION AND TREATMENT SYSTEM
CONCLUSIONS AND IMPORTANT ADDITIONAL COMMENTS
ADVANTAGES OF THE PROPOSED SYSTEM
Image 1. Centrifugal Washer (images for illustrative purposes) 7
Image 2. Centrifugal Washer (image for illustrative purposes) 8
Image 3. Nomenclature for Centrifugal Washer Design (images for illustrative purposes) 8
Image 4. Spray Nozzle 11
Image 5. Nozzle Configuration for Dispersion System 11
Image 6. Mist Eliminator 12
Image 7. Schematic of the Basic Components of the Control System 13
Image 8. Water Recirculation and Treatment System (image for illustrative purposes) 14
Image 9. Sedimentation and Water Supply Tank 15
SSYSTEM AND CONTROL EQUIPMENT DESIGN – INCINER8 LATAM
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2. BACKGROUND
The special waste incinerator, including psychoactive substances such as marijuana and cocaine, generates combustion gases with an approximate flow rate of 9.00 m³/s at temperatures close to 940 °C.
These gases contain particulate matter and acidic compounds (HCl, HF, SO₂, NOx) that require treatment before emission in order to comply with current environmental regulations.
The incineration system includes a gas scrubber installed in the piping and a baghouse filter. The scrubber is located immediately before the combustion gases enter the baghouse filter.
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3. PROJECT OVERVIEW
EQUIPMENT DATA:
PENNRAM BRAND INDUSTRIAL INCINERATOR
MODEL C – 750
SERIAL NO. 220008
CAPACITY 350 KG/H
MANUFACTURED SEPT. 2020
LOCATION: Costa Rica – Central America PROJECT MANAGERS: José Pablo Araya / Sofía Sánchez
3.1. INCINERATOR EQUIPMENT WITH PRIMARY AND SECONDARY CHAMBER
4. OBJECTIVE
To ensure thermal reduction, removal of particulate matter, and neutralization of acidic gases generated during the incineration process for special waste through the implementation of a modular and efficient system.
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5.SCOPE
The design of the centrifugal scrubber for the special waste incinerator includes sizing, recommendations, and support during construction and startup.
The centrifugal scrubber was designed using the information provided in the technical reports from AGQ Costa Rica S.A. for normal operating conditions, assuming that such information is reliable and presents no uncertainty.
The design does not include manufacturing of the control equipment. This equipment may be manufactured by INCINER8 LATINOAMÉRICA S.A. or supported through local manufacturing assistance in Costa Rica.
6.AVAILABLE INFORMATION
Parameterr Samplingg 11
((Marchh 4,, 2026)
Samplingg 22
(Marchh 26,, 2026)
Absolute pressure in the stack (mm Hg) 674,14 674,14
Average gas temperature in the stack (°C) 151,75 155,40
Average gas velocity pressure head in the stack (mm H2O) 4,77 4,77
Gas flow rate at stack conditions (m3/h) 13391,17 13447,60
Incinerator outlet temperature (°C) 938,4 938,8
Incinerator outlet temperature (K) 1211,6 1212,0
DESIGN DATA
After processing the available information and performing a mass balance, the following results were obtained:
Flue gas flow rate: 4.3 m3/s
Flue Gas Temperature: 218.84°C
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DESIGN
CENTRIFUGAL SCRUBBER (IMAGES FOR ILLUSTRATIVE PURPOSES)
STAGEE 11 THERMALL OXIDATIONN INN PRIMARYY CHAMBERR
STAGEE 22 THERMALL OXIDATIONN INN SECONDARYY CHAMBERR
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Image 1. Centrifugal scrubber (image for illustrative purposes)
Objective: Neutralize and remove acidic gases such as HCl, HF, SO₂, NOx by contact with alkaline solutions or water.
Justification: Once the particulate matter is removed, washing is more efficient and the formation of sludge or scale by solid particles is avoided.
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Image 2. Centrifugal scrubber (image for illustrative purposes)
Image 3. Nomenclature for Centrifugal Washer Design (images for illustrative purposes)
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Technical Scrubber specifications:
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Additional details:
Water supply:
- Total amount of water: 1.2 L/s (18.4 gal/min)
- Amount of water per nozzle: 5.8 L/min (1.53 gal/min)
Note: The correct thing to do is almost always to use calcium hydroxide between 3 and 8%, not just water.
The less concentrated the solution, the less fouling and the better hydraulic handling, but also the lower the neutralization capacity. Agitation systems are required in the tanks so that limescale does not settle.
Calcium hydroxide is cheaper than sodium hydroxide (NaOH), but it is more difficult to handle mechanically. If your scrubber is small or you don't want to deal with solid sludge, sodium hydroxide is a much cleaner liquid alternative, although quite a bit more expensive.
- Nickel-chromium alloys (Inconel 625 or Hastelloy C-276): If metal is required in the shock zone, these alloys offer excellent resistance to heat oxidation and acid corrosion. However, even these require cooling (water jackets) if the exposure is direct and prolonged at 1000 °C.
- Silicon carbide (SiC): Ideal for spray nozzles (sprays) in the inlet area, as it resists abrasion from particles and does not deform in extreme heat.
Washer Body Construction Materials: Once the flue gases have been "tempered" and their temperature drops to ranges of 60 to 90 °C, the materials change to prioritize chemical resistance.
- Super austenitic stainless steel (AL-6XN or 254 SMO): Greater than or equal to 316L steel, specifically designed to resist chloride pitting in humid environments.
- Glass fiber reinforced plastic (FRP/GRP): Very common due to its low cost and zero corrosion.
High-quality resins should be used. Note: Can only be used if the pre-cooling system is guaranteed to never fail.
- Glass or fluorine-polymer coatings (PTFE/PFA): These are applied over carbon steel to create a total barrier against strong acids.
Nozzles:
- Distributor: Acodinsa
- Number of nozzles: 12
- Sprinkler Pattern: Full Cone
- Spray Angle: 90° (M)
- Nozzle Material: Metal
- Nozzle Type: NCS1003
- Nozzle pressure: 10 psi
- Nozzle Diameter: 0.22 in
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Observations:
Seek advice from the nozzle distributor to obtain the exact number of nozzles and the type of nozzles required to handle 118.4 gal/min of water 1.53 gal/min = 55.8 L/min per nozzle and cover the height of the centrifugal scrubber spray tube, from below into the water reservoir.
The washer must have access for maintenance and change of nozzles.
The centrifugal scrubber will be supported by iron angles with crossbars to give it the necessary rigidity.
Image 4. Spray nozzle
Image 5. Nozzle configuration for dispersion system
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Image 6. Mist Eliminator
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AUXILIARY EQUIPMENT
a) WATER PUMP
It is required to circulate the water and feed the centrifugal scrubber.
It must have the capacity to handle 18.4 gal/min and overcome losses from the water recirculation and treatment system.
Image 7. Schematic of the basic components of the control system
b) WATER RECIRCULATION AND TREATMENT SYSTEM A sedimentation tank and water supply are required to ensure the removal of particles. A tank with a capacity of 8.7 m3 of water and a residence time of 1.0 h is required. The dimensions of the tank will be:
Height (H): 1.5 m
Width (W): 2.0 m
Length (L): 3.0 m
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Image 8. Water recirculation and treatment system (image for illustrative purposes)
Image 9. Sedimentation tank and water supply
CONCLUSIONS AND IMPORTANT ADDITIONAL COMMENTS
Thee currentt systemm afterr thee relieff chimneyy willl bee modified,, thee operationn off thee bagg filterr willl bee omittedd sincee itt willl nott bee operational,, itt willl bee replacedd forr gass controll byy thee centrifugall scrubberr presentedd inn thiss design..
The current systems installed (horizontal duct spray nozzle) would be part of the system, the wet phase would come into operation together with the centrifugal scrubber after the relief chimney.
In order to comply 100% with the projected results and modeling obtained, it is necessary to respect the dimensions of the equipment, what must and can be modified is the location of the ducts according to the space available in the project.
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The equipment will be connected to the current horizontal duct, and the length of the pipe will depend on the distance between this equipment and the fan. The location of the equipment on the plan will define this length.
The current exhaust system fan at the end of the circuit can be reused for the entire system, however, if necessary, it must be reconditioned and rearranged according to the new location and available space.
Peripheral equipment such as compressors, circuits, pipes, among others, can be relocated in case the pipeline requires it for its correct operation.
The set of plans is attached separately in order to review in detail what is described in this design.
The technical sheet of the suggested pumps that will be part of the recirculation system is attached.
The bag filter, due to its configuration and design, would cease to operate in the proposed system, not only because of its current deterioration but also because it would be inoperative due to the increase in the flow of gases vs. the initial design with the theoretical flow.
INCINER8 LATINOAMÉRICA S.A. can submit a proposal for the manufacture of the equipment from
Guatemala and use local labor for the installation and tuning of the equipment
INCINER8 LATINOAMÉRICA S.A. can submit a proposal for the accompaniment in the supervision, manufacture and installation of the equipment locally directly in Costa Rica with the company recommended by the user and/or the Embassy of the United States.
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ADVANTAGES OF THE PROPOSED SYSTEM
High efficiency in contaminant removal Adaptability to operational conditions and environmental regulations
Sebastiánn Lópezz Montoya | MBA ENVIRONMENTAL ENGINEER Professionall registrationn No.. 05238175412ANTT
Commerciall Directorr | IINCINER88 LatAm Email: slopez@inciner8latam.com Website: www.inciner8latam.com
Carloss Albertoo Echeverrii Londoño | PhD ENVIRONMENTAL ENGINEERING Professionall cardd No.. 35466
Technicall Advisorr | IINCINER88 LatAm Website: www.inciner8latam.com
File details come from the government source that posted it. Updated .