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LiquaJet technology grinds tough materials
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Bulk materials heat exchanger integrated with pneumatic conveying The BULK-X-CHANGE® bulk materials heat exchanger from Coperion Waeschle GmbH & Co. KG, Weingarten, Germany, can now be integrated into pneumatic conveying systems. The company says that the direct installation now considerably improves heat transfer, permitting the combination of the two processes - conveying and temperature control - within one single system. This makes the handling of bulk materials even easier than before. Through changes in design, Coperion Waeschle has now extended the scope of application of the previously gravimetrically fed BULK-X-CHANGE far beyond the handling of freeflowing powders and granules. This new integrated version is also suitable, for example, for fine particle powders that have a fluidizing or cohering tendency during discharge from the silo. Pneumatic conveying systems are frequently used for the handling of such powders. The basic principle of the new process (patents pending) is the direct installation of the BULK-X-CHANGE bulk materials heat exchanger into a pneumatic conveying line. The pneumatically conveyed powder,
The BULK-X-CHANGE bulk materials heat exchanger from Coperion Waeschle GmbH. together with the conveying gas, enters the vertically arranged heat exchanger from below. Coperion Waeschle says that the new arrangement offers a number of advantages. These include that it is ideal for the handling of pneumatically conveyable
powders, especially those powders that are fluidizable. High heat transfer rates can be achieved at low additional pressure loss, and it is compact in design and has no moving parts. Short, defined residence times are possible and there is only a negligible hold-up
of product, which permits rapid changeover from one product to another. The equipment is easy to clean and represents a small capital investment by comparison with other systems. It can be retrofitted into existing systems relatively easily, says the company. According to Coperion Waeschle, the combination of a pneumatic conveying system with the BULKX-CHANGE bulk materials heat exchanger for heating or cooling is suitable for numerous kinds of powdered products. Applications include: the cooling of PTA powder (terephthalic acid powder); powders downstream of fluidized bed systems; powders after spray agglomeration, for example in spray towers; alumina powder; melamine powder; and catalytic powder. It is also suitable for the cooling or preheating of polymer powders, and superabsorbent powders. The company adds that it has a pneumatic conveying plant available for pilot plant trials that can be equipped with different sizes of heat exchangers and is rated for throughputs of up to 6,000 kg/hour and temperatures of up to 150°C. Contact: Coperion Waeschle Website: www.coperion.com
LiquaJet technology grinds tough materials LiquaJet LLC has introduced a new, advanced jet milling technology that can handle plastic compounds that were previously considered ungrindable or difficult to grind and can be milled finer than ever before. LiquaJet LLC technology is a high intensity jet-milling process and is a product of The Jet Pulverizer Company.
The company says that markets and materials that will greatly benefit from this new technology are those that value the highest purity and demand the finest powder possible. Plastic and polymeric materials that could only be reduced to a 100-200 micron average can be milled below a 30 micron average. Other applications and materials are yet to be explored.
Plastics Additives & Compounding September/October 2008
The process, based on the patented Micron-Master™ jet pulverizer, offers superior, instant micronization with no attritional heat, no moving parts and no contamination. LiquaJet LLC says it is actively working with a select group of leading universities and other industry pioneers to develop novel size reduction solutions. These clients are looking for real processing
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answers and breakthroughs to mill some of the toughest engineered materials ever created. Results show significant enhancement in the utilization and yield of materials such as polycaprolactone (PCL), polymethylmethacrylate (PMMA) and polycaprolactam (Nylon 6). Contact: Liquajet LLC Website: www.liquajetllc.com
News
Bulk materials heat exchanger integrated with pneumatic conveying The BULK-X-CHANGE® bulk materials heat exchanger from Coperion Waeschle GmbH & Co. KG, Weingarten, Germany, can now be integrated into pneumatic conveying systems. The company says that the direct installation now considerably improves heat transfer, permitting the combination of the two processes - conveying and temperature control - within one single system. This makes the handling of bulk materials even easier than before. Through changes in design, Coperion Waeschle has now extended the scope of application of the previously gravimetrically fed BULK-X-CHANGE far beyond the handling of freeflowing powders and granules. This new integrated version is also suitable, for example, for fine particle powders that have a fluidizing or cohering tendency during discharge from the silo. Pneumatic conveying systems are frequently used for the handling of such powders. The basic principle of the new process (patents pending) is the direct installation of the BULK-X-CHANGE bulk materials heat exchanger into a pneumatic conveying line. The pneumatically conveyed powder,
The BULK-X-CHANGE bulk materials heat exchanger from Coperion Waeschle GmbH. together with the conveying gas, enters the vertically arranged heat exchanger from below. Coperion Waeschle says that the new arrangement offers a number of advantages. These include that it is ideal for the handling of pneumatically conveyable
powders, especially those powders that are fluidizable. High heat transfer rates can be achieved at low additional pressure loss, and it is compact in design and has no moving parts. Short, defined residence times are possible and there is only a negligible hold-up
of product, which permits rapid changeover from one product to another. The equipment is easy to clean and represents a small capital investment by comparison with other systems. It can be retrofitted into existing systems relatively easily, says the company. According to Coperion Waeschle, the combination of a pneumatic conveying system with the BULKX-CHANGE bulk materials heat exchanger for heating or cooling is suitable for numerous kinds of powdered products. Applications include: the cooling of PTA powder (terephthalic acid powder); powders downstream of fluidized bed systems; powders after spray agglomeration, for example in spray towers; alumina powder; melamine powder; and catalytic powder. It is also suitable for the cooling or preheating of polymer powders, and superabsorbent powders. The company adds that it has a pneumatic conveying plant available for pilot plant trials that can be equipped with different sizes of heat exchangers and is rated for throughputs of up to 6,000 kg/hour and temperatures of up to 150°C. Contact: Coperion Waeschle Website: www.coperion.com
LiquaJet technology grinds tough materials LiquaJet LLC has introduced a new, advanced jet milling technology that can handle plastic compounds that were previously considered ungrindable or difficult to grind and can be milled finer than ever before. LiquaJet LLC technology is a high intensity jet-milling process and is a product of The Jet Pulverizer Company.
The company says that markets and materials that will greatly benefit from this new technology are those that value the highest purity and demand the finest powder possible. Plastic and polymeric materials that could only be reduced to a 100-200 micron average can be milled below a 30 micron average. Other applications and materials are yet to be explored.
Plastics Additives & Compounding September/October 2008
The process, based on the patented Micron-Master™ jet pulverizer, offers superior, instant micronization with no attritional heat, no moving parts and no contamination. LiquaJet LLC says it is actively working with a select group of leading universities and other industry pioneers to develop novel size reduction solutions. These clients are looking for real processing
16
answers and breakthroughs to mill some of the toughest engineered materials ever created. Results show significant enhancement in the utilization and yield of materials such as polycaprolactone (PCL), polymethylmethacrylate (PMMA) and polycaprolactam (Nylon 6). Contact: Liquajet LLC Website: www.liquajetllc.com