RNG_Equipment_List.pdf
PDF 225 KB Posted
- Solicitation number
- 326024
- Issued by
- Dane County, Madison City, Wisconsin
About this file
This is an equipment specification document prepared by Dane County, Wisconsin, detailing the current Renewable Natural Gas (RNG) facility equipment inventory at 7242 Maahic Way, Madison, Wisconsin. The document, created by Alex Thomas and reviewed by the RNG Operations Team under the direction of County Executive Melissa Agard and Director John Welch, provides comprehensive specifications and replacement priorities for the facility's nitrogen and carbon removal units and supporting infrastructure. The equipment list includes three 60 HP blowers (3,000 scfm capacity), two National Turbine blowers (125 HP each, 2,200 scfm each), a Guntner LFG chilling unit, two Temperature Swing Adsorption (TSA) systems with CarboTech vessels, two Pressure Swing Adsorption (PSA) systems in separate phases, a Regenerative Thermal Oxidizer, compression equipment including Ariel and GE compressors, and associated buffer vessels and recirculation equipment. Replacement priorities are designated as high, low, or dependent on downstream and upstream equipment needs, reflecting the interdependency of system components.
The current PSA system was originally commissioned in 2019 and has reached the end of its useful life, prompting the county's procurement initiative to replace the nitrogen and carbon removal units with more efficient current technology while increasing landfill gas processing capacity. The equipment inventory reflects a sophisticated multi-stage biogas upgrading process, with various components supplied by manufacturers including John Zink, National Turbine, Guntner US LLC, Norit, CarboTech, Busch, TECON, Hoffman Lamson, R&R Engineering, VPT Kompressoren GmbH, Ariel, GE, Basset Manufacturing, and Thermatech. The facility currently operates two trains of adsorber vessels with maximum capacities of 6,250 cubic meters per hour and minimum capacities of 1,100 cubic meters per hour, with operating temperatures capped at 55°C and operating pressures between 20 and 35 mbar.
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Text version
County Executive Melissa Agard Director John Welch, PE
1919 Alliant Energy Center Way Madison, Wisconsin 53713
Attachment C: RNG Equipment List
Current RNG Equipment Make/Model Specifications and Capacity Priority for Replacement Three 60 HP Blowers
1,000 scfm (each) -60" w.c. with 4 psig outlet
Supplied by John Zink.
3,000 scfm capacity
5 HP with 0.5 psi pressure drop 184F/110F inlet/outlet
Provided through John Zink 3,000 scfm
82 MMBtu/hour ZEF 12" x 35' Supplied by John Zink.
Designed for 3,000 scfm Two vessels at 12 ft dia x 30 ft height
Operating in series
National Turbine Two National Turbine blowers NT88207 125 HP, 2,200 scfm (each)
LFG Chilling Unit Guntner US LLC Vshape Glycol Cooler 232 PSI Rated Pressure Low
500 HP.
Maximum of 2,345 scfm
(each) at 11.6 psig inlet and 160 psig discharge.
Two vessels at 5 ft dia. x 11 ft 6” S/S operating in series.
Norit ROZ3 activated carbon.
Custom Fabrication The TSA consists of two vessels at 5’ dia. x
11’6” S/S operating in parallel Carbon Activated media
CarboTech Vessels
Two trains, each six 5’10” dia. x 8’ S/S adsorber vessels with four Busch
RA1600B426 vacuum pumps (with a -
13.26 psig vacuum)
50 HP
Unknown media responsible for CO2, O2, and N2 removal 6,250 cubic meters/hour capacity maximum 1,100 cubic meters/hour capacity minimum
Maximum operating temperature 55°C
Operating Pressure of 20 mbar, 35mbar maximum
One train, six 5’10” dia. x 8’ S/S adsorber vessels with four Busch
RA1600B426 vacuum pumps (with a -
13.26 psig vacuum).
50 HP
Proprietary Media Unknown media responsible for N2 removal and recirculation 6,250 cubic meters/hour capacity maximum 1,100 cubic meters/hour capacity minimum
Maximum operating temperature 55°C
Operating Pressure of 20 mbar, 35mbar maximum
R&R Engineering
H-60-10
John Zinc
Custom Fabrication
VPT 500-160 WCV
TECON Biogas Storage Bladder
26-AF20
73206-GDGI
Hoffman Lamson Blowers
CarboTech Vessels
Proprietary Media
Custom Fabrication
Norit BG1 Activated Carbon Media
TECON Biogas Storage Bladder
26-AF20
VPT Kompressoren GmbH
National Turbine
Wellfield Vacuum Blowers
Wellfield Vacuum Blower Cooler
Flare
Bulk H2S Removal Towers
LFG Booster Blowers (2)
H2S Polishing Towers
Temperature Swing Adsorption System (TSA)
Pressure Swing Adsorption System (Phase 1)
Pressure Swing Adsorption System (Phase 2)
LFG Compression
Pressure Swing Adsorption (Phase
1) Discharge Buffer Bladder
Pressure Swing Adsorption (Phase
2) Recirculation Buffer Bladder
Pressure Swing Adsorption (Phase
1) Discharge Buffer Blowers (2)
Low
Low
Low
Low
Dependent on Downstream Equipment Need
Dependent on Downstream Equipment Need
Dependent on Downstream Equipment Need
High
High
High
Dependent on Upstream Equipment Need
Dependent on Upstream Equipment Need
Two National Turbine blowers Dependent on Upstream
Equipment Need NT55207 Capacity of 1,500 scfm (each)
One Ariel JGQ/2, 250 HP, 1,300 scfm
70/135 psig inlet to 975 psig discharge
JGQ/2
9.8 MMBtu/hr
200 HP combustion air fan 30,000 scfm
Created by: Alex Thomas Checked by: RNG Operations Team
Regenerative Thermal Oxidizer
Tann
(1) Ariel
Thermal Oxidizer
Product Gas Compression
Pressure Swing Adsorption (Phase
2) Recirculation Blower
Dependent on Upstream Equipment Need
Dependent on Upstream Equipment Need
National Turbine blower Dependent on Upstream
Equipment Need NT55207 Capacity of 1,500 scfm
100/125 psig inlet to 985 psig discharge compressors
Two GE A352, 250 HP, 1,251scfm (each)(2) Cobey Energy
GE A352
National Turbine
PSA Intermediate Product Vessel (Between Phase 1 and 2)
Product Buffer Vessel Dependent on Upstream
Equipment Need
Dependent on Upstream Equipment Need
Basset Manufacturing
Thermatech Pressure Vessel
Basset Manufacturing
Thermatech Pressure Vessel
Design temperature 200°F
Max Pressure of 165 psi
Design temperature 200°F
Max Pressure of 165 psi
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