CN1982358A - Method for treating and recovering polystyrene packing material solid refuse - Google Patents

Abstract

A method for treating and recovering industrial and consumer refuse is carried out by dissolving polystyrene packing material solid refuse into dimethyl benzene solvent to obtain homogeneous mucus. It can be used for adhesive or coating materials.

Description

Handle and reclaim the method for polystyrene packing material solid refuse

Affiliated technical field

The present invention relates to the relevant method of handling and reclaiming industry and consumer material waste, the particularly relevant method of handling and reclaiming polystyrene (Polystyrene) packing material solid refuse.

Background technology

Industry and consumer waste material have become the serious and main problem of environmental protection (Environmentdl Concern) last, and the most well-known solid waste material is a polystyrene packing material.Make on the wrapping material because polymer chemistry development of technology and development, numerous macromolecule resins are widely used in, use for the industry and the consumer's goods.Yet great majority are can't be by biolytic with the material of macromolecule resin manufacturing, and these environmentally hazardous materials finally just become so-called " white pollution " (White Contamintion) after abandoning.

There are many researchs and development to be devoted at the problem that solves " white pollution ".For instance, wherein a kind of method is packing and parcel (Wrapping) material " granulating again " with polyethylene (Polythene) and polypropylene (Polypropylene).Another example of this method then is to utilize pyrolysis technology, produces gasoline and diesel oil from the macromolecule resin wrapping material.

Although the existing method that solves " white pollution " problem is more or less benefited, but goes back defectiveness really.For example, the product that utilizes regeneration techniques to produce as " granulating again ", also poorer than script usually on gloss, intensity and color without the regenerated material.Gasoline and the diesel oil produced from thermo-cracking often do not reach international quality standard.And in manufacturing processed, the uncombined carbon regular meeting that processing procedure produced causes the interference of equipment.

So when overcoming the problem of existing known recovery technology, having needs to propose new recovery polystyrene material waste method, particularly at the solid polystyrene wrapping material.

Summary of the invention

At the problems referred to above, main purpose of the present invention is to stick together or the mucous preparation method of coating material at polystyrene packing material solid refuse being transformed into can be used as for providing a kind of.

The present invention be solution based on dimethylbenzene (Dimethylbenzene) as solvent, and polystyrene packing material solid refuse is as solute.The polystyrene solid material is extensively as the packing and the lapping of industry and consumer's goods aspect.Used polystyrene packing material is because size and can't be solid waste often by biolytic characteristic, and causes the problem greatly of one on the waste management.

The basic processing procedure of the inventive method comprises the following step.At first, pour dimethylbenzene (Xylene)-dimethylbenzene (Dimethylbezene) solvent into glass, stainless steel, or in the reaction vessel of stupalith (being not plastic material) system.Then, polystyrene solid waste fragment is broken into littler fragment, is added in the solvent then.The solid polystyrene fragment can be dissolved in the solvent, cooperates continuously stirring to help the accelerate dissolution process.

When more polystyrene fragment is dissolved in the solvent, the products therefrom more and more thickness that will become, and also the volume of products therefrom can increase.The mucus of gained can utilize filtration to remove impurity.Then, end product can be stored in by glass, stainless steel, or in the storage vessel of stupalith (being not plastic material) system.

By the polystyrene solid fragment amount that adds and be dissolved in solvent, the stickiness of may command end product and flowability.Generally speaking, add and to be dissolved in the polystyrene solid fragment amount of solvent few more, the expression good fluidity is and less sticky, and vice versa, adds and to be dissolved in the polystyrene solid fragment amount of solvent many more the mobile difference of expression and stickiness is good.

End product is the mucus material, can be used as sticky material or coating material.

If end product is as coating material, the products therefrom of Xuan Zeing is that sticky desire keeps flowability again so, so that use and be coated in the surface easily, makes the surface coated.A rough index is arranged, if be exactly end product as coating material, then the ratio of the initial volume of end product volume and solvent should be about 1.5: 1.

As coating material the time, end product can be applicable to the surface of the various objects that many differing materials make, and these materials such as paper are opened, metal, timber, glass, pottery, fragment of brick, marble, stone material, cement etc.After use, coating should give drying.In case after the drying, coating is waterproof and flame resistant.If select colored coating for use, in preparation mucous processing procedure, can add coloured dyestuff.

When as sticky material, the gained solution of Xuan Zeing can be denseer and sticky so, and the more polystyrene solid fragment of this expression must add and be dissolved in the solvent.A rough index is arranged, if be exactly end product as sticky material, then the ratio of the initial volume of end product volume and solvent should be about 2: 1.

As sticky material the time, end product can be used to stick together the various object surfaces of making at many differing materials, and these materials are metal, timber, glass, pottery, fragment of brick, marble, stone material, cement etc. for example.In case after the drying, stick together very by force, and can be able to stand brute force.

Embodiment

Further describe Promethean characteristic and other objects of the inventive method in conjunction with the embodiments.

Polystyrene is the high molecular polymer chemical preparations that is polymerized from styrene monomer.The molecular structure of polystyrene is as follows:

Cinnamic molecular structure is an ethane molecule that hydrogen atom is replaced by phenyl.Always have four two keys in the vinylbenzene, wherein have three to be positioned at phenyl, form the phenyl structure of quite stable.Another double bond position is in ethane, and the unstable of two keys makes ethane activate very much.

The polyreaction of polystyrene is based on the two keys of activatory in the ethane.In some cases, the two keys of activatory can disconnect and be connected with other activation key (activatory molecule) again, to form new chemical compound.

For example, in the process according to the homolgous molecule polyreaction, two keys of vinylbenzene molecule activation can be connected with two keys of other vinylbenzene molecule activations.

Numeral in the structural formula " n " refers to polymeric vinylbenzene molecule number in polystyrene." n " value is big more, and polymkeric substance is just big more, so molecular weight is just high more." n " value and indefinite are to look different polyreaction situation and change thereupon.

Polystyrene is a white powder, just as other resins have thermoplastically.Polystyrene can be made into the solids package material, has some gratifying characteristics, for example anticorrosive, waterproof and good insulation performance character.Yet polystyrene is after using, and it is rejected material that polystyrene solids package and wrapping material become.

The present invention is a kind of method and processing procedure of handling and reclaiming polystyrene packing material solid refuse, is to see through solubilizing reaction to take this to reprocess polystyrene.At first, select to meet easy extraction, low cost, good solubility and the hypotoxic solvent of considering.

In the preferred embodiment of the present invention, select two kinds of isomers :-dimethylbenzene (1,3-Dimethylbenzene) and right-dimethylbenzene (1, mixing 4-Dimethybenzene) is as solvent.This is because dimethylbenzene and polystyrene all belong to the aromatic chemistry product, and all uses the former subbase of benzene to be the Alkaline base.They come to such an extent that be more prone to for reacting each other and embedding mutually at similar character.In fact, see through many experiments, find and observe, with regard to polystyrene, between being dissolved in-dimethylbenzene and right-dimethylbenzene can be than comparatively fast, and do not find swelling.Formed solution also is homogeneous.

In addition, dimethylbenzene volatilizees easily and is hypotoxicity.As a result, dimethylbenzene can volatilize at short notice, and polystyrene can solidify.This need not pass through secular result.

The xylene solvent that the present invention uses can obtain from two kinds of sources.First kind of source is the product of the dry distillation of coal.When coal gas just cools off, utilize (Naphtha) solvent extraction of Shi Brain oil and absorb this product, isolate the aromatic chemistry product from coal gas whereby.The result obtains crude benzol (CrudeBenzene).Follow rectifying crude benzol in certain temperature range, to obtain the distillatory distillate.For will reducing the content of impurity in the solvent, temperature range to maintain 138 to 140 degree Celsius between.Just can obtain xylene solvent through after the condensation.

The source that other will obtain dimethylbenzene is the mode of nationality by catalase reorganization (CatalyticReforming), comes the production aromatic product from oil.Rectifying distillatory distillate in temperature same as described above, and, just obtain xylene solvent through after the condensation.

Another kind of mode can be utilized commercially available dimethylbenzene-xylene solution, is petroleum product, as solvent.Commercially available dimethylbenzene-xylene solution comprises generally that ethylbenzene (Ethylbenzene) is about 10% to 20%, phosphorus-dimethylbenzene (o-Xylene) is about 15% to 25% ,-dimethylbenzene (m-Xylene) about 40% to 50% and right-dimethylbenzene about 20% to 30%.In the following experiment of the present invention, with commercially available dimethylbenzene-xylene solution as solvent.

In a preferred embodiment, the inventive method comprises the following step at least:

1, preparation solvent: pour glass, stainless steel into based on the solvent of dimethylbenzene, or in the reaction vessel of stupalith (being not plastic material) system, wherein this reaction vessel can not dissolved by solvent;

2, preparation solute: the fragment of polystyrene solid waste is broken into littler fragment, so that also dissolved in the reaction vessel of packing into easily;

3, solute is added in the solvent, with dissolved solids polystyrene fragment (continuously stirring helps the accelerate dissolution process) in solvent; And

4, if be necessary, the mucus that filters gained is to remove impurity.

When more polystyrene fragment is dissolved in the solvent, the products therefrom more and more thickness that can become, and also the volume of products obtained therefrom can increase.End product can be stored in by glass, stainless steel, or stupalith (being not plastic material) or other can be by in the storage vessels of solvent institute dissolved material system.

By the polystyrene solid fragment amount that adds and be dissolved in solvent, the stickiness of may command end product and flowability.Generally speaking, add and to be dissolved in the polystyrene solid fragment amount of solvent few more, the expression good fluidity is and less sticky, and vice versa, adds and to be dissolved in the polystyrene solid fragment amount of solvent many more the mobile difference of expression and stickiness is good.End product is the mucus of homogeneous, can be used as sticking agent or coating material.

Embodiment one

Reclaim the polystyrene solid waste and produce coating material

Utilize dimethylbenzene-dimethylbenzene to be solvent, polystyrene solid waste fragment is a solute, carries out as above-mentioned step, up to about 1.5: 1 of the ratio of the initial volume of end product volume and solvent.End product is faint yellow on color, homogeneous, tool stickiness, but still kept flowability.End product can be used as coating material, and is coated on the surface of the various objects that many differing materials make, and these materials such as paper are opened, metal, timber, glass, pottery, fragment of brick, marble, stone material, cement etc.After use, coating be should give drying.In case after the drying, coating is waterproof and flame resistant.If select colored coating for use, in preparation mucous processing procedure, can add coloured dyestuff.

Embodiment two

Reclaim the polystyrene solid waste and produce sticky material

Utilize dimethylbenzene-dimethylbenzene to be solvent, polystyrene solid waste fragment is a solute, carries out as above-mentioned step, up to about 2: 1 of the ratio of the initial volume of end product volume and solvent.End product is faint yellow on color, homogeneous and very thickness is dense.As sticky material the time, end product can be used to stick together the various object surfaces of making at many differing materials, and these materials are metal, timber, glass, pottery, fragment of brick, marble, stone material, cement etc. for example.In case after the drying, stick together very by force, and can be able to stand brute force.

Claims (10)

1, a kind of method of handling and reclaiming polystyrene packing material solid refuse, it is characterized in that: this method comprises the following step at least, and preparation is based on a solvent of dimethylbenzene; Add this polystyrene packing material solid refuse and make it and be dissolved in this solvent in this solvent, nationality is to obtain a homogeneous mucus, and wherein this homogeneous mucus system can be used as a sticky material or a coating material.

2, a kind of method of handling and reclaiming polystyrene packing material solid refuse as claimed in claim 1, it is characterized in that: in the step of wherein above-mentioned this solvent of preparation, more comprise this solvent is packed in the reaction vessel, this reaction vessel system can not formed by the material of this dissolution with solvents is prepared by one or more.

3, a kind of method of handling and reclaiming polystyrene packing material solid refuse as claimed in claim 1, it is characterized in that: wherein above-mentionedly add this polystyrene packing material solid refuse and make it and be dissolved in this solvent in this solvent, a plurality of big fragments that more comprise this polystyrene packing material solid refuse are broken into a plurality of steps than small shreds.

4, a kind of method of handling and reclaiming polystyrene packing material solid refuse as claimed in claim 1, it is characterized in that: in this solvent, add this polystyrene packing material solid refuse and make during its step that is dissolved in this solvent carries out, stir simultaneously.

5, a kind of method of handling and reclaiming polystyrene packing material solid refuse as claimed in claim 1 is characterized in that: filtering step, it is to filter this homogeneous mucus to remove a plurality of impurities.

6, a kind of method of handling and reclaiming polystyrene packing material solid refuse as claimed in claim 1, it is characterized in that: more comprise the step of storage, it is this homogeneous mucus to be stored in not by this solvent dissolve in the storage vessel that a kind of or plural kind of material makes.

7, a kind of method of handling and reclaiming polystyrene packing material solid refuse as claimed in claim 1 is characterized in that: more comprise and add the step that plural number is planted coloured dyestuff, so as to producing a coloured coating material.

8, a kind of method of handling and reclaiming polystyrene packing material solid refuse as claimed in claim 1, it is characterized in that: wherein above-mentioned solvent is dimethylbenzene-dimethylbenzene.

9, a kind of method of handling and reclaiming polystyrene packing material solid refuse as claimed in claim 1, it is characterized in that: wherein the ratio of the initial volume of this homogeneous mucous volume and this solvent is about 1.5: 1, and nationality is to produce this coating material.

10, a kind of method of handling and reclaiming polystyrene packing material solid refuse as claimed in claim 1, it is characterized in that: wherein the ratio of the initial volume of this homogeneous mucous volume and this solvent is about 2: 1, and nationality is to produce this sticky material.