Efficacité énergétique

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Etudes de cas, Aricles de presseBrochures

Etudes de cas

 

Heat recovery in a paraxylene plant in Asia - using process energy the smart way

Exchanging the existing air-cooled condensers for four Compablocs allowed a major paraxylene producer in Asia to increase heat recovery by more than 23 MW in its plant.

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Valuable heat no longer wasted
A major paraxylene producer in Asia replaced an existing air-cooled heat exchanger on top of a distillation column with an Alfa Laval Compabloc, recovering 9 MW of heat. Payback time, including installation cost, was less than 6 months.

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Alfa Laval Packinox for pyrolysis gasoline hydrogenation

Alfa Laval Packinox’s Standard Combined Feed/Effluent Heat Exchanger for cracked gasoline hydrogenation units has proved to be a financially – and environmentally – advantageous solution for this application.

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Compabloc recovers energy at UNIPAR
After extensive evaluation, UNIPAR decided to install a Compabloc fully welded compact heat exchanger from Alfa Laval, mounted on the benzene distillation column as an integrated reboiler, to ensure maximum heat recovery.

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Two challenges. Two Compablocs. Petkim, Turkey
Petkim, Turkey’s largest petrochemical company with a total of 14 plants, exports to the United States and countries in the Middle East, Africa and Asia. The Alfa Laval Compablocs were able to perform the needed duties while requiring a minimal amount of space.

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Lower costs, more heat recovery, less space at Japanease petrochemical company
In 2005 a Japanese petrochemical company began exploring options to increase capacity for the production of benzene and toluene at their plant in Japan. The company had heard about Alfa Laval’s extremely efficient, compact Compabloc heat exchanger.

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Fresh scents in Vietnam
For more than ten years, Unilever Vietnam has enjoyed excellent growth, along with the Vietnamese economy and now, as the country undergoes further economic liberalization, the company is preparing for rapid expansion.

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Braskem, Brazil’s biggest petrochemical manufacturer, uses Alfa Laval Compabloc
Braskem produces among other chemicals ethylene, a critical component in plastic production. The Compablocs have been in service for approximately five years, and have not needed cleaning yet.


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Lean ethylene production
Rayong Olefins Company in Thailand cooperated with Alfa Laval to find new opportunities to cut energy costs by installing a Compabloc 120 heat exchanger. This led to an annual saving of 1.4 million euros in energy costs. 

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Shanghai Petrochemical Company revamped its ethylene oxide plant in Shanghai
Alfa Laval has sold units to EO/EG applications for over 20 years and to all the various, main processes. By using Compabloc, the benefits of an all-welded product in combination with high efficiency save EO/EG producers money and maintenance.

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Lanxess keeps choosing Alfa Laval heat exchangers

Whenever the international chemical company has had to replace a heat exchanger at its production site in Germany in recent years, they've chosen a compact heat exchanger from Alfa Laval – either a Compabloc, or an AlfaNova model.

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More product without increased waste at Hexion Specialty Chemicals in Rotterdam
Hexion Specialty Chemicals in Rotterdam produces Cardura – a brand name car paint base product. Alfa Laval delivered a very compact plug-and-play 2-stage evaporation system, without modifications in the production plant itself.

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The right solution at the right time at DSM in Rotterdam
One single Alfa Laval Compabloc heat exchanger successfully replaced no fewer than seven shell-and-tube heat exchangers at the DSM Special Products plant in Rotterdam. DSM was very pleased with the way Alfa Laval approached the critical situation that the company was facing.

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Two-in-one solution for BASF, Brazil
The largest BASF production facility in Latin America is the Guaratinguetá Chemical Complex, strategically located between the cities of Rio de Janeiro and São Paulo. The choice lay between an identical unit, a vertical shell-and-tube condenser with a carbon steel shell and graphite tubes, or a new Compabloc condenser in Hastelloy C-22 from Alfa Laval.

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Compabloc condenser solves VOC problem for Ciba, North America
The Ciba Specialty Chemicals plant in West Memphis, Arkansas manufactures water treatment chemicals mostly for use by the pulp and paper industries. The West Memphis plant funded a project to remove emissions of volatile organic compounds (VOCs) from its stack vapours.

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Cutting maintenance in ammonia plant in Asia
An Asian ammonia producer had severe problems with fouling in the lean/rich interchanger in its acid gas removal process. Problems disappeared when the existing coil-wound heat exchanger was exchanged for four Alfa Laval Compablocs.

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21 years with Alfa Laval's Compabloc - and counting
At BASF’s acetylene and naphthalene plant in Ludwigshafen, Germany, a steadily growing number of Alfa Laval Compabloc heat exchangers have been delivering safety, reliability – and lower costs since 1993. The first installation was followed by 25 more over the last 21 years – with the most recent commissioning in 2013.

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Increased plant capacity and reduced maintenance at fertilizer plant
In order to increase production capacity, DneproAZOT – a Ukrainian fertilizer manufacturer – replaced its old shell-and-tube technology with a fully welded Alfa Laval Compabloc heat exchanger. 

 

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A common cause

When the customer began to experience problems with their semi-welded plate heat exchangers, Alfa Laval feared that they'd lose a valued customer. Instead, the two companies decided to work together to find a solution, and now they've never been closer. 

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Increased production reliability with Alfa Laval Compabloc condensers
A major European chemical company increased production reliability by replacing shell-and-tube condensers with Alfa Laval Compabloc condensers. Utilizing only half the space of the old shell-and-tube installation.

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Compact heat exchanger improves the process for BASF
An Alfa Laval Compabloc heat exchanger has successfully replaced a shell-and-tube heat exchanger at BASF’s amine plant in Ludwigshafen, Germany.  Alfa Laval could provide a unit that was much smaller than the existing installation.

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Alfa Laval's Compabloc is saving both money and space for Rhodia in Brazil
The Rhodia petrochemical company operates 110 factories worldwide. When the company needed a new reboiler for its petrochemical plant at Paulínia, Brazil, Rhodia turned to Alfa Laval for a solution.

 

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Alfa Laval heat exchangers in Balaji Amines Ltd, India
Today, BAL has 48 Compablocs, 20 spiral heat exchangers, six semi-welded heat exchangers and 12 gasketed heat exchangers from Alfa Laval in its plants. The heat exchangers are used as condensers, reboilers, vaporizers and coolers.

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Accurate troubleshooting wins a coveted award for a joint BASF and Alfa Laval team
When the chemical company BASF had to replace a pair of worn out heat exchangers at their Antwerp Caprolactam plant, it seemed like an ordinary project. They designed an installation based on AlfaVap heat exchangers that offered an acceptable payback period.

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African chemical giant Sasol
After converting coal into petrol and diesel for local markets, South African industrial giant Sasol has emerged as a global player competing in the world fuel markets.

 

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Maintenance starting on the drawing board
With a fast-growing demand for its products, the chemical company Huntsman Holland BV has to focus strongly on production safety and efficiency. Service and maintenance play a key role in maximizing the throughput of its plant.

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Alfa Laval double-wall, double safety at Shanghai MDI plant
A large chemical plant in China, Shanghai BASF Polyurethane Co., Ltd. (SBPC), has installed an Alfa Laval double-wall plate heat exchanger for cooling MDI from the process plant before it is put into storage tanks.

 

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Hot and cold water for free
A mid-sized styrene butadiene rubber producer in Asia installed two Alfa Laval spiral heat exchangers and one Compabloc to recover waste heat from a stripping column. Annual energy costs are now estimated to be about 660,000 euros lower.

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Alfa Laval Compabloc boosts capacity and cuts CO2 at Dow Wolff Cellulosics in Belgium

Dow Wolff Cellulosics, Belgium, has installed two Compabloc compact heat exchangers from Alfa Laval for different duties in one of the plant's solvent recovery columns.

 

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Frequent cleaning a thing of the past
Mexichem reduced maintenance and increased production when exchanging two alternately operating shell-and-tube interchangers for two Alfa Laval spiral heat exchangers. Annual steam savings of 110,000 euros was an additional bonus.

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Alfa Laval Compabloc condenser solves problems in Belgian dichloroethane plant
SolVin’s engineers did consider direct replacement with similar shell-and-tube, Compabloc heat exchangers from Alfa Laval offered a compact, cheaper alternative that also promised to be less expensive and easier to maintain.

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Alfa Laval Compabloc helps solve problems for Sayanchimplast, Russia
Sayanchimplast, a leading Russian producer of vinyl chloride monomer (VCM), is always on the lookout for new ways to make their processes more efficient. Compabloc was installed in the purification column of the EDC/VCM plant before the cracker approximately one year ago.

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Arkema had to replace waste-water cooling plate heat exchangers
Alfa Laval showed them how the welded Compabloc heat exchanger would do the job better, and they were convinced. One compact Compabloc heat exchanger was custom-designed for Arkema replacing two existing units.

 

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Brochures

Increase efficiency
Five ways to stay ahead of the competition in the petrochemical industry. Learn how Alfa Laval’s heat exchangers can improve your bottom line.

Increase efficiency

Energize your profits - discover hidden assets
See how waste heat can be turned into value.

Energize your profits

Lean ethylene
Discover how you can boost efficiency in your ethylene plant.

Lean ethylene

Articles de presse

Alfa Laval's compact condensers offers sizable payback 
For condensing vapor, today's compact systems can reduce the cost of the equipment itself, and trim installation and operating costs.

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A reboiler for the space age 
A description of an innovative reboiler solution, comparing installation costs and space constraints. Alfa Laval's Compabloc is one of the most compact reboiler solutions available on the market today. 

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Exchanging ideas 
Robert Broad, Alfa Laval, UK provides an overview of the condenser options available to the hydrocarbon processing engineers.

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Consider Alfa Laval spiral heat exchangers for fouling applications 
This article describes the unique features of the spiral heat exchanger, applications in which the spiral heat exchanger has been successfully used and conclude with some practical design guidelines.

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Expanding the envelope 
Johan Gunnarsson, Alfa Laval, Sweden, surveys the alternative to traditional heat exchanger technology for petrochemical plants. 

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Compact heat exchangers: Improving heat recovery - in Chemical Engineering 2009
Utilizing quench water energy at an European ethylene plant. Global warming is of major concern today. There is increasing pressure on industry to reduce both energy usage and the associated CO2 emissions. An important and profitable action that industry can take is to recover more process energy and thus improve the efficient use of that energy.

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Where size really counts - Compact heat exchangers make reducing CO2 emissions profitable
Today, many industries are asking themselves how they can contribute to a better environment by reducing CO2 emissions, while remaining efficient and cost competitive. One solution, where feasible, is to install compact heat exchangers instead shell-and-tube heat exchangers.

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Shift to compact heat exchangers - for optimized heat recovery, efficient cooling and reduce chiller load 
There is increasing pressure on industry to reduce both energy usage and the associated CO2emissions. Two important and profitable actions to take are to recover more process energy and optimize cooling efficiency.

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