Azota is a technology company specializing in natural gas processing.
Our patented technologies and knowhow, based upon 35 years in the industry, are the core of our brand identity. Every Azota project is a result of careful scrutiny of the best technology fit and subsequent optimization to give our customers robust trouble-free designs.
Amongst the existing fleet of our plants in operation, several are the most fuel efficient in the industry. When you want to consider the best process designs available, make sure you are talking to us!
Natural Gas Liquid (NGL) Fractionation
NGL must be separated into marketable products. Azota engineers use the most advanced and economical designs for the required fractionation columns. Fluctuations in feedstock quantity and quality are taken into consideration to allow for a wide range of operating parameters. Heat pumped splitters and other innovative solutions are often provided.
Refrigerated Joule Thomson (JT) Plants
Refrigerated Joule Thomson plants are economically designed for gas liquids recovery. These are simple systems to cool the gas to meet a dewpoint specification. JT plants are an economical choice for rich gas applications as, frequently, no residue compression is required. These may be used as a quick solution to gas liquids recovery while a larger plant is being constructed. Azota employs the use of different technologies to ensure the appropriate level of hydrocarbon dewpoint controlling, such as a JT plant, MRU plant, deep hydrocarbon dew pointing unit (DDP) or a turboexpander (an expander/compressor in a single package). Hydrocarbon dewpoint control is critical for transmission pipelines.
Cryogenic NGL Recovery Plants
High efficiency gas liquid recovery plants have long been the central aspect of Azota’s process design. From our early plants in 1990’s, we have been improving our design with constant innovation. Azota designed plants are known for their minimized compression with high-recovery process designs. This has resulted in solid operational performance with standout technology in both ethane recovery and propane recovery modes of operation
Inlet Liquid Handling and Condensate Stabilization
While usually provided as part of our gas processing plants, inlet liquid handling has become a significant area of technology specialization, often on a standalone basis. Azota designs and installs slug catchers to exacting specifications for the removal of liquids.
Amine Treating for Acid Gas Removal
Azota provides both standalone Acid Gas Removal Units (AGRU) and units part of a turnkey natural gas processing plant suite. These units ensure thorough removal of acidic components such as CO2, H2S, mercaptans and COS. We are the only designer of split flow, high efficiency amine systems capable of meeting <10 ppm CO2.
Acid Gas Injection
Azota will design and build your acid gas injection system after the required permits are acquired.
Sulfur Recovery and Handling
Often, large quantities of H2S warrant the installation of a Sulfur Recovery Unit (SRU) when the H2S cannot be safely disposed of through reinjection into a reservoir well. When reinjection is not available, an SRU may be required to separate the H2S into elemental sulfur, which can then be sold. We recognize that there are many ways to handle elemental sulfur and will help you select the most economical disposal option.
Azota provides gas dehydration where required to ensure the water dewpoint specification is met. Glycol dehydration or molecular sieve technology is typically incorporated into our overall plant design. We will ensure that the appropriate dehydration system, such as a TEG or a mole sieve unit, is chosen for the process. Azota was the first to offer a TEG dehydration unit integrated with a low temperature, high ethane recovery plant.
Condensate stabilizers are designed to reduce the vapor pressure of raw liquid condensate from a wellhead or pipeline to “stabilize” the liquid product for storage and sales. Stabilization is typically accomplished by liberating light hydrocarbons (C1 through C4s) in a medium- to low-pressure, reboiled distillation column. The overhead vapor can be utilized as fuel or returned to a plant for further processing. The remaining liquid product (C5+) can be stored or transported as a natural gasoline product or blended with a crude feedstock for further process. Some designs also allow for recovery of a separate Y-Grade NGL product.
Cryogenic NGL Recovery Plants
High efficiency gas liquid recovery plants have long been the central aspect of Azota’s process design. From our early plants in 1990’s, we have been improving our design with constant innovation. Azota designed plants are known for their minimized compression with high-recovery process designs. This has resulted in solid operational performance with standout technology in both ethane recovery and propane recovery modes of operation:
As the industry has required higher ethane recovery levels, Azota has refined our basic turbo expander plant design, while maintaining horsepower efficiency, so that our customers may expect ethane recovery levels in excess of 99%. These facilities are practical and provided on a license-free basis.
The shale gas boom revealed a need for an uncompromised design for a high-propane recovery plant capable of full ethane rejection. Azota’s propane recovery plant design allows low inlet gas pressure in a turbo-expander is not necessary, as well as lower residue gas recompression requirements.
Nitrogen Rejection and Helium Recovery
Azota is a pioneer and leader of nitrogen rejection and helium recovery technology. Our team designed and constructed one of the largest helium recovery plant in the United States and was the first to offer a commercially viable small, twin tower nitrogen rejection unit. If you are looking for helium recovery or nitrogen rejection, make sure you talk with us about your project before committing to a design.
Read More About Nitrogen Rejection
Read More About Helium Recovery
Pipeline Compressor Stations
With knowledge and experience building complex gas processing facilities, Azota is well suited to design and build compressor stations to meet your needs. We work closely with all major compressor and turbine manufacturers to ensure the most appropriate equipment is specified and is consistent with your existing operations. More importantly, we are able to meet tight deadlines for time sensitive projects.
Pressure Swing Adsorption
Azota may employ the use of Pressure Swing Adsorption where circumstances warrant its use. Azota’s PSA applications are typically used in helium and hydrogen purification. These are frequently built in conjunction with our NRUs.
Mini LNG Facilities
With increasing interest in LNG, we build modular LNG plants. We use both nitrogen expander cycles and mixed refrigerant designs. Our plants are provided with the required inlet gas treating, molecular sieve dehydration, on a completely integrated basis.
Power Plant Gas Pretreatment System
Power plants using natural gas for power generation have strict requirements for inlet gas. Azota designs pretreatment systems to insure the inlet gas specifications meet OEM requirements.
Azota has a cryogenic plant design for clients requiring an expedited completion date for their natural gas processing plant. Standard designs may require slight modification depending on the inlet gas composition. Azota has a small 60 MMSCFD plant design that is completely modular and portable and a 200 MMSCFD standard plant design that can be quickly customized to accommodate inlet gas conditions.
Plant Debottlenecking and Modernization
Azota is the leader in revamping existing plants to increase recoveries and/or reduce fuel usage. We have modified three plants to reduce compression requirements, increase recoveries while simultaneously increasing plant processing capacity.
Oxygenate Removal Systems
Gas liquid pipelines typically have a maximum oxygenate specification, and generally the culprit is methanol. Methanol is a common means of hydrate inhibition in many if not most of the North American gathering systems where it performs well and predictably to keep these lines flowing even in the coldest conditions.