CES Steam and Drive Gas Generators
Whatever your need for drive gas, steam, and
even CO2, CES can provide you with versatile,
reliable and proven industrial oxy-fuel combustion
steam and drive gas generators and re-heaters.
The world's leading high pressure, high
temperature (HPHT) oxy-fuel technology developer
and manufacturer, we are the go-to technology
for your needs.
CES offers a comprehensive range of steam and drive gas generator units from 20 MW, to 200 MW, and more (50,000 lb/hr to 500,000 lb/hr of steam and 1,500 Mscfd - 15,000 Mscfd and up of CO2), with unparalleled fuel and output flexibility to address the specific requirements for your application. CES re-heaters, with approximately a 20 MWt capacity rating, are steam or drive gas breathing oxy-fuel combustors offering a similar flexibility and target to boost your existing steam flows to higher temperature and energy levels. Our steam and drive gas generators and re-heaters are robustly designed to allow you to capitalize on fuels from the highest to the lowest quality and produce steam and drive gas ranging from 200-5,000 psi at temperatures ranging from saturation to 3,200 °F.
Our steam and drive gas generators and re-heaters meet customer requirements for economic installation and operation as well as providing excellent flexibility for complex industrial processes. So, whether you need a gas generator for zero-emissions power generation or an on-site steam or CO2 source for enhanced oil recovery, just talk to us and together with our world-renowned partners, we can select the generator and plant configuration which is optimally suited to your needs.
CES is a certified ISO 9001 technology developer and ASME-certified pressure vessel manufacturer and is strictly adhering to the industry's highest standards.
CES Gas Generator - GG12
The typical GG12 consists of a pipe in pipe design with no moving parts made of high quality heat and corrosion resistant alloys. At the heart of the GG12 lies a 12" diameter platelet stack with its associated water, oxidizer, and fuel feeder system designed for the specific fuel qualities targeted in your project. The quench injector system consists of 12" sections typically spanning up to 6.5' but adaptable in length to different fuel qualities.
CO2 EOR surface facilities
ZEPP
ZELB
NGCC PCC
Desalinization plants
IGCC
CES Gas Generator - GG04
The typical GG04 consists of a pipe in pipe design with no moving parts made of high quality heat and corrosion resistant alloys. At the heart of the GG04 lies a 4" diameter platelet stack with its associated water, oxidizer, and fuel feeder system designed for the specific fuel qualities targeted in your project. The quench injector system consists of 12" sections typically spanning up to 6.5' but adaptable in length to different fuel qualities.
SAGD
Food-grade CO2 generation
Desalinization plants

CES OFJ-79
In partnership with LM-Alternatives, a California-based aircraft equipment specialist and gen-set developer, Clean Energy Systems has brought the concept of a simple, effective, available expander turbine to life. By repurposing a reliable workhorse engine used for decades in supersonic jets like the F-4 Phantom, CES harnessed the power of the gas generator, expanding its steam/CO2 drive gas from roughly 170psia to 30psia or sub-atmospheric and generating 30 to 45MW of electricity.
Peaking Power Plants
Simple ZEPPs
CO2 EOR Recycle Facilities
Phase I CO2 EOR Surface Facilities
OFT-900
Clean Energy Systems developed the OFT 900 to take full advantage of the capabilities unlocked by the CES gas generator. In collaboration with Siemens Energy and Florida Turbine Technologies (FTT) and sponsored by the Department of Energy, CES re-designed Siemens' SGT-900 (the former Westinghouse W-251) for oxy-fuel combustion, creating the OFT 900.
The CES system improves cycle efficiencies while eliminating various pollutants, including nitrogen oxides (NOx). The size, efficiency, and high availability of the OFT-900 make it the perfect centerpiece for large oxy-fuel cycle zero-emissions power plants.
CES redesigned Siemens' SGT-900 to achieve near perfect combustion of oxy-fuel by eliminating the 19-stage compressor, adding a thrust balance system, and replacing traditional combustor cans with clean-burning CES re-heater oxy-combustors. The changes allow roughly 150MWe to be extracted from this 43MWe gas turbine design.
Siemens Energy has taken over the development of the OFT-900 for its commercial deployment and it will be known as the SXT-150 in its OEM portfolio. For more information, please refer to www.energy.siemens.com

CES Re-Heater Booster
The Clean Energy Systems re-heater, developed with the support of the U.S. Department of Energy, dramatically improves the efficiency of combined steam and gas turbine power cycles by boosting the drive gas to turbine inlet temperatures typically associated with gas turbines and even beyond. The principles behind the re-heater are essentially the same as applied in the CES drive gas generator but exchanging water with steam as coolant.
Beyond the application in intermediate pressure turbines, such as the OFT-900 or SXT-150, CES re-heater boosters also find application in upgrading and homogenizing your solar thermal or geothermal steam source. CES re-heaters enable more powerful and higher energy extraction capabilities, allowing you to boost renewable steam sources to temperatures of up to 3,200 °F for higher efficiency utilization.
CES re-heaters can be integrated into all types of geothermal power cycles. Augmenting the dry steam produced or the indirectly generated steam from hot water, allow for the implementation in dry-steam cycles, flash steam cycles, or binary cycles. CES re-heaters can further augment the efficiency of integrated solar combined cycle or more traditional concentrated solar power plants.