Turbomachinery is essential to the success of any cryogenic process. CryoMachinery's radial inflow turboexpanders provide refrigeration for some of the most efficient air separation facilities in the world. At CryoMachinery, we have been dedicated to providing high value and reliable expansion and compression products for over 40 years. High value is the result of world-class efficiency and low-cost designs that are delivered to our customers on time. Reliability results from proven designs which are easy to operate and maintain. Because we are part of a company that builds and operates its own process plants, we understand the expectations of customers who operate their own facilities. CryoMachinery is ready to meet your next cryogenic equipment need.	ETAPC-6 turboexpander assembly
Low-pressure (270 psig or less) turboexpanders are used to provide refrigeration for gas-producing cryogenic separation plants. The expander extracts work from a low-pressure gas stream providing refrigeration to the process. The work removed from the gas stream by the expander is used to provide compression power to the cycle. Often applied in plants producing large volumes of gaseous products in demanding industries, these applications require proven reliability and high efficiency in a cost-effective package. CryoMachinery's family of process compressor-loaded expanders is ideal for applications where power and capital cost are evaluated highly. Advanced design tools and capabilities, combined with streamlined project management processes, allow for the best match between efficiency and capital investment.	GETAPC-4 turboexpander assembly
CryoMachinery offers process compressor-loaded expanders with either fixed-geometry, oil-lubricated bearings or our patented compliant foil gas bearings. Each design has its own application niche based on its unique benefits. The elimination of the lubrication system and associated installation costs combined with a very compact, highly reliable expander design making the gas bearing models a cost-effective choice for lower volumetric flow services. Units furnished with oil-lubricated bearings offer a rugged cost-effective alternative for higher-flow applications.
Low capital and installed costs Designed for ease of operation and maintenance High-efficiency expanders—field tested up to 90% Energy recovery through high-efficiency compression Low seal gas consumption High refrigeration load capacity Proven equipment reliability Responsive support Quality Management System—ISO 9001 certified Complete documentation package Easily customized modular designs High thermodynamic efficiency Volute housings for compressors and expanders Zero bypass nozzle mechanism Close clearance abradable labyrinth seals Low parasitic loss bearing designs 3-dimensional computation fluid dynamic analysis of aerodynamic surfaces and contours Warm and cryogenic shop testing available Adjustable/remote controlled inlet nozzle vanes for peak efficiency over wide operating conditions Proprietary expander diffuser design for maximum pressure recovery Multipad tapered-land radial bearings (oil bearing units) for stable operation Patented multipad compliant foil bearings (gas bearing units) for stable operation Stiff shaft rotor design Wear-resistant coatings on wheels Complete shop mechanical performance test "Plug-In" design for rapid serviceability Finite element analysis (FEA) of complex geometries for accurate prediction of stresses, heat transfer and natural frequencies   Up to 1300 HP (970 KW) Expander Inlet Temperature +200 to –300°F (+93 to –185°C) Pressure-Containing Housing (MAWP) 270 PSIG (19 Kg/cm²g) typical, can be higher Expander Impeller Sizes 4–14 inches (100–355 mm) diameter Impeller Styles Open impellers Impeller Manufacture Machined from rugged, single-piece castings or milled from forged stock available Expander Performance Isentropic Efficiency in excess of 90% Performance Envelope The chart below shows the performance envelope for the GETAPC-4 (Gas Bearing Expansion Turbine Adjustable Nozzles Process Compressor Loaded) ETAPC-6, ETAPC-9 and ETAPC-13 low-pressure turboexpanders based on the process available energy (DHs in Btu/lbm) and the actual volumetric flow at the discharge (Q2 in acfm). Process Compressor Performance Isentropic Efficiency in excess of 85%

CryoMachinery low-pressure turboexpanders are available in configurations ranging from fully skidded systems, including seal gas and lubrication systems, to stand-alone expanders. Our intimate knowledge of the cryogenic separation industry guided us in developing standard installation packages with a broad range of available options to meet the ever-increasing demands of the dynamic global marketplace. The full range of options available allows customers to customize the installation package to meet their demands without compromising cost or schedule. Packages can be customized to include features to meet the most rigorous demands.

Skid mounted ETAPC-9 turboexpander with lubrication and seal gas systems

Fully skidded packages, including seal gas and lubrication systems Fully installed and prewired process and accessory instrumentation Coast-down lube oil accumulator Lube oil reservoir vent mist eliminator Stainless steel lube oil and seal gas piping downstream of filters Emergency oil shutoff valve to prevent contamination of the process gas. Speed and vibration monitoring European Machinery Directive Compliance available Optional dual lube oil filters and pump arrangements Optional programmable logic controller (PLC)-based control panel Optional sound control enclosures Optional bearing temperature monitoring API614 applications