For food packaging boxes, environmental protection is the current popular trend and the inevitable development of food packaging boxes in the future.
Hongtai packaging, with baked food packaging cartons, PET packaging boxes, packaging paper bags based in the industry, has won the trust and praise of customers.
Today, Hongtai packaging shares the handling methods of food packaging boxes once they are discarded, increases everyone's awareness of environmental protection, and 'rises' ahead of schedule for a beautiful sky (Zhi)Potential (Shi)'. Food packaging box-Hongtai packaging 1.
Pretreatment technology food packaging box waste pretreatment refers to the use of physical, chemical or biological methods to convert packaging waste into a disposal form convenient for transportation, storage and recycling.
Pretreatment often involves the separation and concentration of some components in packaging waste, so it is often a process of recycling materials.
Pretreatment technology mainly includes sorting, compaction, crushing and dehydration.
The sorting of packaging wastes is to separate various useful resources by manual or mechanical methods, recycle them and use them in different production.
Compaction of packaging waste is an operation technology to reduce apparent volume and improve transportation and management efficiency.
Compaction technology is common in foreign countries, and it is only used in limited fields in China.
The crushing process of packaging waste is a process of reducing its single size and making its texture uniform, thus reducing gaps and increasing bulk density.
Dehydration of packaging waste is generally used in the mixing of packaging waste and sludge with high water content in municipal waste. In order to separate useful packaging waste, dehydration and volume reduction must be carried out first, for sorting and transportation.
Drying is mainly used for packaging light materials that are crushed and sorted from waste. Drying is required when energy recovery or incineration is carried out by using such light materials to achieve the purposes of water removal and weight reduction. 2.
Chemical treatment technology, there are many kinds of packaging wastes, and many of the contents of the packaging are harmful chemicals, which often remain in the packaging wastes after use.
Chemical treatment method is a harmless treatment technology, which makes harmful substances in packaging waste become safe and stable substances through chemical reaction, and reduces the harmfulness of waste to the lowest possible level. 3.
Incineration treatment technology incineration treatment uses high temperature thermal decomposition method to oxidize packaging waste into substances with small volume and little harm to the environment.
After incineration, the volume of packaging waste can generally be reduced by 80%-90%;
Some harmful substances in packaging can destroy their tissue structure or kill pathogenic bacteria through incineration to achieve the purpose of detoxification and detoxification.
Incineration has developed rapidly in developed countries and has formed a set of perfect treatment process and systematic equipment.
Its advantage is that it can utilize the heat energy released by the combustion of waste. According to general estimates, burning 1 kg (After treatment and sorting)Packaging waste can produce 0.
5 kilograms of steam, making full use of it will be a lot of resources. 4.
Pyrolysis treatment technology, because many of the packaging materials are organic compounds with thermal instability, when they are placed under high temperature conditions without oxygen or oxygen deficiency, under the combined action of decomposition and condensation, this kind of organic matter will undergo cracking and be converted into gaseous, liquid and solid components with smaller molecular weight.
Pyrolysis treatment technology is a method of harmless treatment under high temperature, anaerobic or anoxic conditions by using this characteristic of organic packaging waste.
Pyrolysis and incineration are two completely different processes.
Incineration and heat release can recycle this part of heat, while pyrolysis is endothermic.
The incineration products are mainly carbon dioxide and water, which have no utilization value;
The pyrolysis products are mainly combustible low molecular compounds: gaseous hydrogen, methane, carbon monoxide, liquid methanol, acetone, acetic acid, acetaldehyde and other organic substances, tar, solvent oil and the like, the solid state is mainly Coke or carbon black, which can be recycled. 5.
Microbial decomposition technology microbial decomposition technology refers to relying on the role of microorganisms widely distributed in nature, through biotransformation, easily biodegradable organic components in packaging waste are converted into humic fertilizer, biogas or other chemical conversion products, such as feed protein, ethanol or sugar, so as to achieve a treatment method for harmless packaging box waste.
The biggest advantage of this technology is that it can recycle the final product and achieve the resource utilization of packaging waste, which is a promising method.