Evaporator systems must work safely and efficiently at all times, so we build quality and reliability into our skid-mounted units right from the start. Every component, down to the valve seal material, is selected for its optimal suitability for every specific situation. Also the operating principle is fine tuned to each case.
That’s why many of the world’s leading Engineering, Procurement & Construction (EPC) contractors and end users turn to Petrogas for peace of mind. We have supplied evaporating systems to refineries, power plants and industrial consumers.
LHG Handling
Liquefied Hydrocarbon Gases (LHG) Handling
LHG’s are transported in theit liquid form to obtain the maximum energy density. Petrogas can supply the complete loading & unloading systems, including controls and firefighting installation. All systems comply with marine standards and are thouroughly tested and inspected prior to installment on ships.
LHG Evaporators
Liquefied Hydrocarbon Gases (LHG) Evaporators
Storing and transporting LHG in their liquid form is cheaper, but it often will have to be gaseous for use. At Petrogas we design and build LHG conditioning systems that facilitate transport or prepare the LPG prior to consumption. Amongst these systems are the liquid storage and forwarding pump systems; vaporizing; superheating and gaseous pressure controlling systems; as well as secondary systems such as condensate extraction and storage. We make sure all systems are perfectly tuned in to one other, making sure you get the most out of your feed stock.
Various chains of hydrocarbons are available in liquefied form, from Ethane (C2) to Pentane (C5), as well as mixtures such as Liquefied petroleum gas (LPG or LP Gas) which consists of a mixture of propane and butane (C3/C4). In comparison to heavier hydrocarbons (oils), these lighter hydrocarbon fuels generate lower amounts of emitted carbon dioxide per unit of heat produced, and are commonly used as an alternative fuel for cars and as chemical feedstock.
From a global warming perspective, fuel selection can play a significant role in reducing emissions of carbon dioxide and other greenhouse gases. LHG generate fewer carbon emissions than gasoline (petrol) and broadly equivalent emissions to diesel.
In addition, the carbon footprint of LHG is 20% lower than that of fuel oil and 50% lower than coal. LHG therefore helps to reduce CO2 emissions and helps to reduce Black Carbon (BC) emissions, which are the second biggest contributor to global warming and can cause serious health problems. LHG are a better source of energy in the transition period from fossil fuels to renewable sources.
LNG Evaporators
Liquefied Natural Gas (LNG) Evaporators
LNG is transported and stored as a liquid. LNG Evaporators return the LNG to its gaseous state. To evaporate LNG the temperature needs to be raised, this can be done through a variety of techniques using different types heat sources. Examples of heat sources are seawater, ambient air, (waste) heat, steam or hot water. Depending on your local situation we select the most economical method.
Process Description
Process Description LPG
LPG is transported and stored in liquid phase under high pressure, at ambient temperature. In order for your combustion equipment to be able to use the propane it must undergo a phase change (vaporization) from liquid to gaseous. Submerged motor forwarding pumps send the LPG through the pre-heater to the vaporizer. The vaporized LPG is superheated afterwards to prevent condensation in downstream piping and control valves maintain a stable pressure towards the consumer (Gas Turbine or other). The control and monitoring system ensures a stable pressure and flow and maximize up time.
Process Description LNG
LNG is transported and stored in liquid phase under atmospheric pressure, but cooled to temperatures as low as -190°C. To evaporate LNG, temperature can be added using various techniques; ambient air, (sea) water, steam or hot water. For each case Petrogas will choose the best possible option based on your preferences, available resources and process conditions.
EASIER
Our LPG systems are designed for simple operation and easy maintenance. Our modular skid-mounted design shortens erection & commissioning time required on site according to the turnkey concept.
Since Petrogas has extensive on-site experience, operate-ability and maintainability are embedded in the basic design. The system layout allows for safe and easy access to major components and caters for easy heater bundle retracting when cleaning is due.
Petrogas works with preferred partners, but is brand independent; we can follow any list of preferred vendors you may have. This ensures you get the most out of any spare parts plan you may already have in place.
SMARTER
The kettle type vaporizer entails a very stable liquid level and subsequent stable pressure. Smart design feature like this create an inherently stable system, simplifying operation and drastically reducing operation failures.
Sophisticated data acquisition helps determining preemptive maintenance routines, prolonging system lifetime and productivity. Petrogas can assist in setting up these routines, based on years of experience gathered in the field over more than 6 decades.
The system checks itself: System diagnostics detect any variance in system performance, alerting operators of necessary maintenance or repairs; The condensate is checked for LPG traces prior to discharge to guarantee system safety and the heater capacity is constantly monitored to indicate fouling due to pollutants. Alerts are sent to maintenance personnel prompting for action and, if required, automaticaaly trigger our service department, dispatching parts and/or engineers.
BETTER
To stay at the forefront of technology we continually develop and innovate the LPG systems. Our passionate engineers integrate the latest practices in our designs.
The vaporizing system can be combined with a mixing system to seamlessly incorporate the LPG unit in with another, creating a multi-fuel conditioning system.
The experience Petrogas has with LPG systems and phase transitions in general allow us to provide you with the optimal design in terms of productivity, reliability, accessibility and overall quality.
Wherever you are in the world, all our electrical and mechanical systems are designed and built to suit local conditions and regulations. We built according to the highest standard. State of the art components and systems are customized to your exact needs. At the hand of the project specific design we will start with selecting the component selection procedure. The selection is based upon extensive research, beyond the obvious quality, lead time and cost, we look at: safety, energy efficiency, fit-for-purpose, technological alternatives and the availability and exchangeability of spare sparts. All to ensure that we can guarantee your system is future proof and will be able to run on maximum efficiency during its operational lifetime.
System sections
Loading & Unloading Pumps
Land-based loading & unloading pump sections allow trucks and/or railway cars to be connected to the piping system. Likewise, vessel-mounted sections travel with the ship and containment system to make a vessel self-sufficient in transferring cargo.
After a secure and safe connection is established, the contents can be pumped into or from the connected vessel. Our systems are among the safest in the world, and include a variety of safety features such as interlocks to completely rule out human error.
Vapor Recovery Compressor
Vapour recovery from any vessel or process is important to reduce the emission of gases. The gases usually are a hazard to the environment and are a valuable substance. One way of effectively reducing emission so is by compressing gases coming out of a process and storing the end product in a pressurized vessel.
Fire Fighting System
Natural gas contains numerous component gases but by far the greater percentage is methane (CH4), which represents between 60 and 95 per cent of the total volume. This fact is important when considering the safety aspects for fire-fighters tackling an LNG fire.
During the initial period of vaporisation of the gas, ignition may be accompanied by a flash of varying proportions. Depending on the solution and customer requirements Petrogas can support in the applicable fire fighting system.
Liquid Storage Vessels
The spherical storage vessels (also known as Horton spheres, named after the builder of the first ones) contain anywhere from tens to hundreds of m3 of liquid LPG. The spheres or bullets contain pressurised LPG or any other hydrocarbon gas in liquid form.
Forwarding Pumps & Buffering
The explosion proof forwarding pumps route the liquid from the storage sphere through an optional buffer vessel (to prevent frequent startup of the pumps) to the vaporizing system. The pumps are of a special design, featuring a motor submerged in LPG liquid to prevent any leakage along the shaft.
Vaporizer & Super Heater
The vaporizer adds heat to the liquid, enabling a phase change to gas without losing pressure.
Petrogas can advise you on the optimal type of vaporizer for your specific process, e.g. a horizontal or vertical type, and the optimal heating source. Using the same heat source as the vaporizer the super heater heats the gas further, to prevent condensation in downstream piping.
Condensate System
When steam or hot water (waste heat from elsewhere on the plant) are used as heat source, the condensate system (in case of steam) or water return system (in case of hot water) collects and stores the vaporizer heater bundle effluent. This effluent is checked for traces of fuel to make sure the system remains perfectly sealed. If no contamination is detected, the condensate is stored in a tank, prior to being forwarded back to the heat source for re-use.
Analyzing
The analysing system checks the presence of hydrocarbons in the effluent passing through the condensate system. Various high end analysers from renowned manufacturers can be installed upon your requirement.
If trace amounts of hydrocarbons are detected, the relevant vaporizer is automatically taken off line and a backup unit is started.
Flare System
Unwanted gasses and condensates can be disposed of through a flare, reducing the emission of green house gases into the environment. Substances drained from the main system can be accumulated in a slop tank, the flare is fired up when this tank reaches a given level.
Contact us
Would you like to discuss your project with our Experts? Please feel free to contact us.
Direct contact with our Experts
Your interest
Liquefied Hydrocarbon Gas Conditioning
