Fuel Gas Conditioning

Fuel Gas Conditioning Skids – Everything You Need to Know

April 8, Welcome

Fuel gas is a critical driver for diverse industrial and commercial processes; however, it can damage the machinery that requires it to function if not properly purified. Fuel gas conditioning is an effective strategy for ensuring that the gas delivered to industrial processes is free of impurities that may damage sensitive machinery and stall productivity.

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Fuel Gas Conditioning: An Overview

Before we can discuss fuel gas conditioning, we must define what constitutes fuel gas to begin with. Fuel gas refers to fuels that maintain a gaseous form under ordinary conditions. Fuel gas is largely naturally sourced and typically comprised of hydrocarbons, carbon monoxide, or a mixture of both.

What Is Fuel Gas Conditioning?

Fuel gas conditioning is a process where unrefined natural gas undergoes various physical separation processes to eliminate various impurities typically contained in it. A fuel gas conditioning system will remove condensate and particulate contaminations, leaving a clean gas stream ready for use in various industrial applications.

Why Is Fuel Gas Conditioning Needed?

There are various reasons why fuel gas should be conditioned. Highlighted below are some of the most important reasons for eliminating impurities from natural gas.

• Pipeline longevity as transporting purified gas drastically reduces the corrosion rate of gas conduits.
• Conditioned fuel burns cleaner and more efficiently when compared to impurified forms.
• The fuel gas conditioning process ensures greater compatibility of the cleaned gas with the machinery they power.
• Sensitive machinery components will avoid corrosion-related damage from exposure to unfiltered natural gas.

Fuel Gas Conditioning Skids in Oil & Gas

Fuel gas conditioning systems are sometimes required to be mobile to facilitate easier and faster storage and transport. Mounting gas conditioning equipment on skids is an effective way to maintain operational flexibility, as these systems can be quickly transported to areas where they are required.

Now we have established some of the benefits of skid mounted fuel gas conditioning system, we will now describe the integral components.

Components

The key components of a fuel gas conditioning skid include the following.

• Gas scrubbers and filters
• Gas superheaters with integrated dewpoint controls
• Bulk solid and liquid separators
• Valves and instrumentation panels
• Temperature and pressure control systems
• Power control systems

Process Description

Fuel gas conditioning follows a carefully ordered sequence of steps. The gas conditioning process begins with natural gas, or any other fuel gas type, being channeled through knockout drums where liquid contaminants are eliminated.

Sometimes the dried gas is heated to prevent hydrate formation, which can occur at low processing temperatures and higher pressures. Pressure lowering is an alternative method to gas heating to prevent hydrates.

At the next stage of the process, the fuel gas is passed through a filtration unit to remove solid particles and liquids still retained in the gaseous mixture. Finally, the dried gas is passed through a dewpoint suppression system. This stage applies heat to the conditioned gas as it passes through the exit nozzles, preventing the formation of moisture from pressure loss across exit valves.

Throughout the fuel gas conditioning process, operators can calibrate their equipment according to their unique purity requirements. Temperature and pressure control systems can also be closely monitored to ensure maximum process efficiency.

Benefits

The major benefits of operating fuel gas conditioning skids are outlined below.

• Increased flexibility to operational demands as operators can simply relocate the system to any desired site.
• Reduced need for repeated dismantling and recoupling whenever the operational site is changed.
• Lowered operational budget due to elimination of constant equipment reinstallation/reconfiguration and maintenance expenditures.
• Reduced emission of pollutants after burning of the fuel gas.
• Increased longevity of machinery operating conditioned fuel gas due to reduced corrosion-related deterioration.
• Greater efficiency of fuel gas due to impurity removal and gas optimization on demand.

Improve Your Facility with IFS/DXP Fuel Gas Conditioning Skids

Fuel gas optimization is a critical step in natural gas processing for various industrial applications. At IFS, we offer state-of-the-art gas conditioning skids and packages.

Our equipment is guaranteed to optimize the fuels you feed into your industrial processes. IFS fuel gas conditioning skids ensure your equipment operates efficiently and cost-effectively while improving its operational lifespans.

Description

Features of our skid-mounted LNG plants
1. Highly compact skid-mounted structure: total 3 parts including
1) Metering, pressure control & purification system package;
2) Liquefaction system;
3) Public utility and accessories. After all packages reach the job site, the client only needs to connect the flanges, pipelines, etc. Once the LNG plants set on the foundation skid, which greatly reduces workload on site.
2. Highly integration of prevailing internet of objects technology (IOT): DCS self-control system;
3. Short time of construction and high efficiency: 3-6 months for manufacturing, while only 15 days for installation and commissioning.
4. Furthermore, the LNG plants are featured by small land occupation, environmental friendly and low energy consumption. Hence the whole LNG plant can be installed on a field of 60*60m, the main equipment/device is only about 16.5*16.5m. During very short period, the whole plant can be easily moved from one to another;

SERLNG supply professional and honest service.

Natural gas pre-treatment and purification system including:
1. Desulphurization decarbonization system
Process: (MDEA+MEA) mixed amine method
(MDEA+ activator) MDEA method
Software: AMSIM, recognized by Chinese authorities
Results: CO2＜50ppm, H2S＜4ppm

2. Dehydrating system
Dehydration by using 4A molecular sieve
Process by using three towers (or two towers): need less regenerative gas, so that it is more stable in operation
Besides, molecular sieve dryer: designed in accordance with GB150 and tested by fatigue analysis

3. Mercury removal system: 10ng/nm3
The sulfur-loaded activated carbon is used to adsorb mercury, while it can be used for 3-5 years. Since it is one tower or two towers, no need for regeneration. Moreover, a filter is set behind the mercury removal system.

4. Aromatic hydrocarbon and heavy hydrocarbon removal system
From heavy hydrocarbon separator in the cold box, the heavy hydricarbon is separated and then adsorbed by scrubbing solution. After that, it goes out from tower bottom, gets separated, and at last gets stored in the storage tank.

Main processes/methods used for natural gas liquefaction by LNG purification and liquefaction plant:
1) expansion refrigeration circulation 
Nitrogen methane expansion or nitrogen double expansion with freon as pretreatment, while is mainly used for small type liquefaction plant with a capacity of 300,000 m3/day or below;
2) single mixed refrigerant circulation
Divided into both single stage throttling and multi stages throttling.
Liquefaction capacity: 300-2,000,000 m3/day
3) multi-refrigerant circulation 
Mixed refrigerant circulation with propane as pretreatment; while liquefaction capacity: 2,000-10,000,000 m3/day.
Besides, multi mixed refrigerant circulation with propane as pretreatment and mixed refrigerant circulation by nitrogen expansion for supercooling; while liquefaction capacity: 10,000,000 m3/day or above;

Furthermore, only an elite team of experts from cryogenic, instrument and electronics fields is able to plan a perfect LNG purification and liquefaction plant project. In addition, the ability of processing and manufacturing must be supportive. Especially, the key technology and equipment, such as liquefaction cold boxes and tanks, are all necessary to fulfill the project. We are proud to have a strong design team as well as a manufacture team. As a result, with our rich experience, we are able to design, manufacture and install complete sets of natural gas liquefaction plant for different customers. We will help you to build your exclusive LNG purification and liquefaction plant, which is both reliable and energy-saving.

Achievements Table on LNG Project

Shipping & Delivery

The transportation of large equipment, such as the air separation unit, PSA gas plant, and the CO2 recovery plant, has always been a concern of overseas customers. The unloading and lifting must be careful. How to reduce extra handling fees is also one of the issues to be taken into consideration.

We can provide you with a worry free delivery:
1. We maintain long-term cooperation with some partner forwarders. So we can:
a. tell the accurate shipping date and quote the best shipping rates
b. book appropriate cargo space and choose the best shipping method: container, roll-on-roll-off ship, open top container or bulk carrier
c. make appointment for commodity inspection, arrange shipment, and prepare necessary documents for customs clearance

2. We have our own private wharf. Even 300m3 pressure vessels can be loaded within the factory and sent to Shanghai port.

3. We are quite experienced in loading and fixing containers, protecting the cargo from any possible damage on the way. The cargos will be in perfect condition upon the arrival at the destination.

4. The bulk ship and roll-on-roll-off ship are for the delivery of large and bulky cargos. The destination port may not be equipped with large cranes, and at somewhere the lifting charges are quite expensive. Taking these factors into consideration, we will choose ships equipped with cranes to reduce costs for customers. Our forwarder will arrange appropriate crane lifting and attach the cargo to the deck or cabin.

5. We will track the delivery until you receive the cargo.

6. The vast majority of customers receive cargos intact, but there is still likeliness of slight painting scratches. In this occasion, we suggest customers to fix the paint on their own if necessary. In addition, customers may purchase transport insurance to further reduce the risk of cargo damage.

The company is the world’s best LNG Skid supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.