CZ55893A3 - Recovery process of plastic foil waste and sandwich materials with parts of such foils - Google Patents

Description

The films are laminated.

The present invention relates to a process for the recovery of plastic film waste and sandwich materials

BACKGROUND OF THE INVENTION

Plastic foils are used for many purposes in household, business, craft and industry, Especially when used as packaging material _/ becomes plastic waste in a short time · ου · ό4 waste, the foil is either mixed or they are dirty. Rarely can they be cleanly sorted for. expense, low cost, a large part of the produced plastic film appears as a sandwich - a material with different types of plastics, paper, textiles or metals and therefore do not lie easy to recycle.

Much of the plastic film waste ronates with household waste or waste incineration plants.

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Since the plastic foils are hardly biodegradable, they become an old burden in the depot and help to create deforestation fires.

The reaction in the fall-out incineration plant leads to an increase in CO _n emissions due to the low degree of action.

that the liquids were liquefied at high temperature by decomposition; they were sprayed into the Ivmer incinerator. and using reactor gasifier spaces, but this method is only applicable to non-polluted plastic waste that is not contaminated and which is not treated with sandwich materials. These disadvantages are plowed for large-scale use.

In the design of U.S. Pat. No. 40 26,999, it is sought to recover metals from sandwich materials by separating non-metallic materials by defined solvents and under defined process conditions; e aeunotirve components, yeah (we measure the measure of windy different uses for economical and tecunicny usable products, remains an open question.

Effective evaluation of him of the carcasses and pasty waste materials, such as some powders of some paint coayulytes, is problematic today. Here too, depositing as well as incineration of such waste prevails.

It is an object and object of the present invention to provide plastic film waste and sandwich materials containing plastic film parts as a substance and at the same time in combination with a technically simple and meaningful recovery or decontamination of fine-grained and pasty waste materials.

According to the invention, this object is achieved by separating the plastic film waste and the sandwich materials with the film fractions directly as waste or by a suitable method, such as sorting;

-3Small waste or home! of waste and by known methods is comminuted to less than 200 sn x 200 mm, in particular to less than 30 mm x 30 mm. The grain fraction was calibrated with ^{1 in} . ° n names higher than ⁰ · ⁰ ° ⁰ • film sheets and by known means to a temperature higher than Y0.00 ° C, above the melting point • control is used to purchase but three bodies with an edge length greater than 3 ee and less than 30 mm, and in a proportion of 1 to 30 _Λ > in the gasified mixture, it is converted into utility gas in a fixed bed gasification apparatus.

20 to 99% of the fuels and / or waste materials, such as carbon-containing fuels, such as lignite briquettes, wood or old rubber, are charged in the gasified mixture of substances.

In order to recover other plastic waste, other comminuted plastic waste, such as comminuted containers of polyethylene, polypropylene or polystyrene, may be admixed with the plastic film-containing materials from the heating step.

HRO single decontamination or evaluation grained waste ¹ substances such as contaminated filter dust, naadsorbovanphb but it orking / JO carbon, activated coke or residues pyrclýzy, or evaluation pasty waste substances such as residues of paints and varnishes, or clarifying sludge, these přizíc ! They are present in a proportion of less than 50% to the materials containing the luster films.

By means of the proposed process, materials containing plastic films can be converted into lump materials and by chemical conversion of these materials into a fixed bed gasification oasis.

Materials containing plastics ₍ can be a novelty device, and up to

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themselves contaminated, popripaue processed with sandwich materials. The organic impurities are converted to metal using gas and the inorganic impurities are bound to the resulting slag. As a result of the conversion of plastic film waste into lump material which can be easily transported, it can be transported for the removal of small transport costs from the waste to the flue gas sites.

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Gaseous hydrocarbons resulting from why * aorder | they are converted in the second stage of gasification in the gasification plant into utility gas. A further advantage of the proposed method is the possibility of entrapping various grains and / or non-paste-like waste materials, which are thus introduced without any problems into a pressure bed with a fixed bed and decontaminated or converted to utility gas without any problems.

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The product gas produced can be a synthesis gas for the production of new pure chemicals. The emerging Etruscan can be used in the construction industry.

For example, the inventive process is described in more detail in the following.

4 hours of plastic foil and sandwich materials with plastic foil fractions are obtained in a waste treatment plant for household and craft waste. This quantity is crushed to a particle size of 5 x 5 mn in a suitable shredder. h this product is further admixed with 1 t / h of the granulate consisting of contaminated no po

Further

Xylene, polypropylene and polystyrene are added to the product mixture produced

-50.5 t / h oW- water ϊ · ηη'- 'dried jewno zTrr.ýal paint residue testing men * h voify.

metal

The mixed product produced, in total t / h, is converted by methods customary for a thermocouple under pressure at a temperature of 200 ° C to 300 ° C to form 00 00 edges which can be transported.

length ₄ , the lyophilized waste pieces are introduced into a fixed bed pressurizer together with 10 t of brown coal briquettes / h and 5 t of waste wood / ha and converted to 23000 nu in S of raw raw gas.

Treated raw gas may be accumulated or transported to other consumers. The hydrocarbons formed during the heat treatment of the plastics after the β-β are dropped in the form of a light ει medium oil during preparation. condensate and can be converted to utility gas in the gasification plant or can be directly chemically further processed.

Claims (3)

1. A method of recovering plastic sheet waste and sandwich materials with film portions, characterized in that plastic sheet waste and sandwich materials with film portions are comminuted to less than 200 mm x 200 mm, in particular less than 30 mm x 30 mm, heats over a lot of rubbers, plastic foil wastes, using suitable aprons to convert into compact bodies with edge distances greater than 3 mm and less than 30 min and in a proportion of 1 to SuVsi in the gasified mixture are converted to a utility gas in a fixed bed gasifier. The process according to claim 1, wherein additional comminuted solid plastic waste is added to it before the heating of the plastics-containing material. 3. A method according to claims 1 and 2, characterized in that, prior to heating, they are admixed to plastics-containing materials, further comprising: ground and / or granular and / or pasty waste. 1-tky. The gaseous fractions of plastics, by conventional means, lead to compact bodies and, together with the carbon-containing cutter, are converted into a utility gas in a pressurized movable bed into comminuted plastic waste, which can be finely divided and / or set waste together ynovaci