Reduce energy consumption of PET crystal dryer by more than 50%

In the production of PET films, plates and fibers, the use of infrared drum (IRD) crystal dryers to pre - treat old and new resins not only has a high processing speed, is easy to operate, but also saves energy. The entire process takes only 20% of the time of conventional equipment, and the energy consumption can be as low as 65% compared to desiccant dehumidification systems. The Drying Technology Center conducted a comparative test of the IRD drying system with a traditional twin crystal crystallization dryer. The results showed that the energy costs were reduced by 56% and 45%, respectively, when the board and plastic bottles were crushed to recover the recycled resin.

Crystal drying equipment

“Blisters” packaging containers and other products that rely heavily on recycled materials have a large amount of processing. If this new technology is adopted, large-scale adiabatic drying bins and independent crystallizers are not required. These devices often need to be installed in high-headroom plants. Inside. Infrared drum (IRD) dryers require only a dryer with a relatively low processing capacity. The capacity of the connected storage box is less than the throughput of the extruder or molding machine for one hour.

The investment cost of the IRD system is about the same as that of a conventional dryer single crystallizer, but the energy consumption of IRD is generally about 0.1 kilowatts per kilogram of material per hour. The energy consumption of most conventional crystallizers and dryers is this energy consumption. More than twice as many. Energy efficiency is high because infrared radiation is radiant energy that only heats the resin, does not heat the surrounding air, and the heat is transferred from the inside of the resin particles to the outside. The water discharged from the resin particles is carried away by the surrounding air.

When using the traditional desiccant dehumidification system, the drying time of PET is about five or six hours. When IRD is used, the crystallization process of PET only takes eight to thirteen minutes (the time that PET passes through the drum), and then the PET crystals are sent. Dry the dryer/stocker in the middle and let it dry for another 30 to 45 minutes. In other words, after the extruder is turned on or shut down, the processing time of the finished product can be greatly reduced. The IRD dryer uses a continuous operation process that does not require the use of large bins to ensure the operation of the production line, but also to replace the color masterbatch and processed products, the operation is simpler and the time is shorter.

Iron Pyrite

Pyrite as Fillers Used in Steelmaking and Core-Spun Yarn

Steel-making/casting core-clad wire (filling material)

Place of Origin: Henan Luoyang, China

Pyrite, Iron pyrites, pyrites lump, Ferro sulphur, Pyrites powder.

Product Description:

Detailed introduction: is used as the filling material of cored wires and resulfurization additive agent for steel-making and casting. It is used for adding sulfur element in steel smelting to improve the cutting performance, inoculation effect, graphite shape and mechanical properties of gray pig iron.

Quality:

S: 48%min, FE: 42%min, SIO2: 3.0%max, PB: 0.1%max,

ZN: 0.1%max, AS: 0.1%max, . C: 0.3%max, CU: 0.2%max,

H20: 1.0%max, SIZE: 95%min

Granularity: (0-3)mm/(3-8)mm/(3-15)mm/(15-50)mm or other particle size.

Packing: 25KG/500KG/1000KG/BAG or 1000KG/BAG or other packaging.

Note: if there are special requirements, the product can be customized according to clients` requirements.

Pyrite, Iron pyrites, pyrites lump, Ferro sulphur, Pyrites powder

LUANCHUAN COUNTY HENGKAI METALLURGICAL MATERIALS SALES CO.,LTD , https://www.pyritechina.com