References Archive

REFERENCES
OUR SOLUTIONS FOR YOU

Air Cooler Bundle Cleaning - Ketone Dewaxing Unit

2021-12_bundle_cleaning_KETONE_DEWAXING_UNIT_700x450.jpg

One of the units in their Ketone Dewaxing Plant was struggling to maintain the desired process set point of 40°C. With the fans at 100% motor load, the average outlet temperature was 57°C. This was also exacerbated by the higher ambient temperatures during summertime.The cleaning service covered nine AFC units across the Distillation, Reforming and Lubes Plants, starting in early February and ending in early March.

The cleaning had to be done during the colder months to allow for the shut-down of the fans.Once the unit was cleaned, the average motor load was reduced to 45%, and maintaining an average of 39°C, just below the process setpoint. This gives the operators greater control, as well as a reduction in energy costs.

Air Cooler revamp for Crude Oil Distillation in UK refinery

The actual performance was measured and the following was observed by Kelvion:
► Airflow was found to be at 88% of design
► The bundles were externally fouled
► Outlet Temperature was 52.7°C

Kelvion completed the installation and upgrade of the Kerosene Product Cooler with the following parts:
► Complete high efficiency fan
► New transmission and belt tensioning device
► New fan shaft with top and bottom bearings
► New 15kW motor

GAS STORAGE DEBOTTLENECKING - FRANCE

In 2015, Kelvion Thermal Services were contacted by a French Gas Storage site, who were facing cooling capacity issues with their Gas Cooler, especially during summer time when ambient temperatures are extremely high.

After performing a site audit to measure the actual performance of the Gas Cooler, the following was observed by Kelvion
► Airflow was found to be 25% lower than design,
► Coolers were designed for relatively low ambient temperature (30°C versus a maximum of 37°C for this region)

Kelvion Servies modified the Gas Cooler by upgrading the following parts:
► Complete fan set
► New motor and gearbox
► New fan shaft with top and bottom bearings
► New anti-rotating device
► New electrical cabinet

Results:
After upgrading the coolers, new site measurements showed that airflow was increased by 35% and the outlet process temperature decreased by 4°C - 5°C.
End-user was fully satisfied with the revamp, being able to operate the coolers without any issues during the summer time.

Condenser Revamp in LNG Plant

The production of LNG in liquefaction plants is limited by the output pressure of the propane compressor. This is directly linked to the efficiency of the propane condenser, desuperheater and sub-cooler. The performance of these air coolers decreases greatly with the ambient temperature.

Kelvion completed an audit on an LNG plant located in South East Asia. After reviewing the performance test and mechanical settings, we concluded that the only solution to increase the units performance was to make the following changes as part of the revamp:

► New higher load motors
► Higher efficiency fans
► Optimize the transmission

This work was carried out at the customer’s site.

Hydraulic Belt Tensioner for Refinery

2021-12_Fin_Fan_Efficiency_-_Belt_Tensioner_700x450.jpg

In 2018, Kelvion completed airside revamps on 42 forced draft Fin Fan units located in a UK Refinery.

The revamp included a Belt Tensioning Device - compared to their other Fin Fan units, the customer saw energy savings of roughly 5% due to the belts always having correct tension.

The customer's maintenance team would typically spend 4 hours per belt tension or pulley inspection mostly due to typical tension bolt set-up. With the Belt Tensioning Device in place they spend 15 to 20 minutes for the same work, with less risk of hand injuries as well.

As the belt and pulleys have correct tension and alignment, the MTBF is reduced as well, meaning less unplanned maintenance stops.

Results:
Having installed the Belt Tensioning Device, the client saw the following:

► ~5% in energy savings
► zero hand injuries on the units with the device
► 80% reduction in maintenance time
► reduction in production losses due to unplanned maintenance stops

Condenser Bundle Cleaning - Chemical Plant

Prior to our first cleaning service, fouling had never been correctly removed, and built up year-on-year leading to the fans recirculating air at the inlet.
The site’s hydroquinone condenser was struggling at higher ambient temperatures during summertime, this created a process bottleneck at the column, reducing the potential production flowrate. The cleaning service covered the two AFC units across the HQPC Plant, starting in early June and ending in early July.

The ambient air was at 32-34°C daily.

Once the unit was cleaned the outlet temperature was reduced by 6°C, even during peak summertime temperatures.

2021-09_Cleaning_condenser_bundle_Chemical_Plant_700x450.png

Heat exchange equipment for URALCHEM's ammonia production

In 2018, Azot Plant of URALCHEM completed a shutdown maintenance, which included replacement of the vacuum extraction unit in the compression section of the ammonia production facility. The vacuum extraction unit is the apparatus on which the operation of the main compressor equipment in ammonia production depends.The new equipment was designed and supplied by Kelvion. More than 20 trucks were used to transport the unit to the customer's site. According to the customer's representative, the main advantage of the new vacuum-extractor is that it has a larger heat-conduction surface. "This contributes to more efficient vacuum generation and stable unit operation during summertime," said the representative. Azot Plant of URALCHEM is the only enterprise in Russia which produces higher aliphatic amines, crystalline sodium nitrite, sodium nitrate and potassium nitrate. The Plant’s products were awarded with Golden Star and Golden Globe. The main products manufactured by Azot Plant are: ammonia, nitric acid, urea, nitrite-nitrate salts and ammonium nitrate.

AFCs for Woodfibre LNG

DIESTA tubes and the consequent improved performance were the winning factor in the order for several air fin coolers (AFCs).

Woodfibre didn't choose the DIESTA efficiency to reduce the plot plan and target a CAPEX reduction. Instead, they preferred to fully use the available plot plan, maximizing the LNG trains output.
This LNG order represents a great double strategic value: LNG is part of our Green Tech pillar and this is the first order where DIESTA tubes will be installed on the process side of the LNG plant. This success has been the result of great cross-functional teamwork and great cooperation with the customer.

About Woodfibre LNG
Woodfibre LNG is a proposed Liquefied Natural Gas (LNG) export facility currently in the pre-construction phase. The Project is owned and operated by Woodfibre LNG Limited, a privately held Canadian company based in Vancouver, British Columbia.

REFERENCES
OUR SOLUTIONS FOR YOU

Air Cooler Bundle Cleaning - Ketone Dewaxing Unit

Air Cooler revamp for Crude Oil Distillation in UK refinery

GAS STORAGE DEBOTTLENECKING - FRANCE

Condenser Revamp in LNG Plant

Hydraulic Belt Tensioner for Refinery

Condenser Bundle Cleaning - Chemical Plant

Heat exchange equipment for URALCHEM's ammonia production

AFCs for Woodfibre LNG

LEADERS IN ENGINEERED THERMAL SOLUTIONS

INTERESTED?

REFERENCES OUR SOLUTIONS FOR YOU

AFCs for Woodfibre LNG

REFERENCES
OUR SOLUTIONS FOR YOU