CN106865554A

CN106865554A - A kind of glass refuse processing method

Info

Publication number: CN106865554A
Application number: CN201510926907.5A
Authority: CN
Inventors: 程谟杰; 王秀玲; 区定容
Original assignee: Dalian Institute of Chemical Physics of CAS
Current assignee: Dalian Institute of Chemical Physics of CAS
Priority date: 2015-12-12
Filing date: 2015-12-12
Publication date: 2017-06-20
Anticipated expiration: 2035-12-12
Also published as: CN106865554B

Abstract

The invention belongs to scrap glass resource technology field, and in particular to a kind of glass refuse processing method.Realize in specific hydro-thermal reaction system, be directly that raw material and deionized water are solvent using glass discarded object, the hydro-thermal degraded glass discarded object under conditions of temperature range is 150~300 DEG C and certain reaction time.And the control by the addition realization to temperature, the change of time and additive to product.

Description

A kind of glass refuse processing method

Technical field

The invention belongs to scrap glass resource technology field, and in particular to a kind of novel glass refuse processing method.

Background technology

With the rapid development of science and technology with the increasingly raising of living standards of the people, glass is widely used in Among building construction and the daily life of the people.At the same time many glass have also been inevitably generated to discard Thing, forms substantial amounts of cullet.For example, 5%~25% corner can be produced under glass normal production conditions Waste material；Under non-normal condition, because the cullet and glassware that produce unstable generation are being transported and made Loss during, its quantity is difficult to estimate.The glass packaging Bottle ＆ Can abandoned in other people's daily life And the windowpane fragment smashed etc. is also one of the source for producing cullet.According to statistics, China produces every year Cullet has 10,400,000 t, accounts for the 5% of solid waste total amount.However, being difficult to discarded glass by following naturally Ring and general physico-chemical process are decomposed and processed, and have had a strong impact on ecological environment purification.This will Ask and cullet is for recycling and reuse.Glass is reclaimed in addition to waste material is reduced, and is also saved raw material, is saved The energy, slow down many merits such as mining process.

Because the comprehensive utilization work of cullet has certain economic benefit and environmental benefit, thus the world is each State is just recycling the work of cullet in Efforts To Develop.Recycling approach primarily now has following several： (1) direct circulation is recycled, and this is concentrated mainly on glass container, such as beer bottle and pop bottle.In the term of validity It is interior, the number of times of its Reusability is improved, utilization ratio can be not only improved, production cost can also be reduced. But the method for the direct recycling is confined to complete glass container, and these glass containers have certain Service life.(2) using discarded glass as glass production raw material, the method can reduce glass in technique Melt temperature, reduce the energy and save raw material.But the Glass optical deformation produced is serious, color depth, The defects such as bubble, pit, sand grains, scuffing are more, and easily crush.(3) by discarded glass architectural engineering material In the production of material, such as production of building facing material, insulation, acoustic material or various composites. Raw material are this method save, production cost is reduced, but processing preparation technology is complicated, and cost is of a relatively high.

To ensure that cullet continues efficient recycling, it is necessary to explore new cullet utilization ways, city is developed The new product that field needs.The present invention is degraded using hydrothermal method to glass discarded object.By controlling to react Temperature, pressure and additive content, the species and concentration of products therefrom can be adjusted.The method is grasped Make simple, with low cost, for the resource of cullet provides new approach.

The content of the invention

It is an object of the present invention to be directed to the limitation of existing glass refuse processing method, overcome and be processed into The problems such as this height, complex treatment process, the present invention provides a kind of glass simple to operate, with low cost and discards Substance treating method.

Technical scheme is as follows：

A kind of method of hydro-thermal degraded glass discarded object, comprises the following steps that：

(1) reactant glass discarded object is mixed with water, is placed in reaction vessel, addition additive regulation pH Value；

(2) reactant is reacted a period of time under given conditions；

(3) product that will be obtained is separated.

With scrap glass that particle diameter is 20~60 mesh as reactant in step (1), with water as solvent, resistance to height is placed in In pressure, corrosion resistant reaction vessel, the mass values of reactant and solvent are 1:20~1:Between 5, solvent Addition is the 20~60% of reactor volume.

Additive therefor is organic acid or inorganic acid, such as hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, acetic acid in step (1) In one or two, pH value is adjusted between 0~7, preferably pH be 2~5 between.

The reaction vessel that compound is will be equipped with step (2) is placed in baking oven, in the range of 150~300 DEG C, pressure Power is within the scope of 0.48~8.58MPa, and 30~120min of heated at constant temperature with this understanding, takes out reactor It is cooled to room temperature.

The optimal conditions of step (2) reaction are 200 ± 5 DEG C, and pressure is 1.55 ± 0.15MPa, and the reaction time is 60±5min。

In step (3) separation method used for filtering, complexing, precipitation, selectivity pass through or ion exchange in Any one.

Glass discarded object is silicate glass, the one kind in sillico aluminate glass, silicon borate glass or two kinds More than.

Reaction primary product is silicic acid, and accessory substance is chloride, sulfate, nitrate, phosphate or acetic acid One or two or more kinds in salt.

Advantage of the invention is that：

(1) it is that the resource of glass discarded object is opened there is provided a kind of new glass refuse processing method New approach.

(2) the method is simple to operate, with low cost.Directly mix with water using by glass discarded object, 30~120min is reacted at 180~300 DEG C, it is to avoid high-temperature fusion during traditional recycling, so that significantly Cost is reduced, the energy has been saved.

(3) product can be used as industrial chemicals.By hydro-thermal reaction, glass is degraded to silicic acid and corresponding Salt, such as chloride, sulfate, nitrate, phosphate, acetate.The product is former as chemical industry Material, there is certain application market.

Specific embodiment

The present invention is further described below by specific embodiment

Embodiment 1：

(1) laboratory abandoned quartz container, broken 20~60 mesh particles that sieve to obtain, weighs 1g cullet Particle and 20mL deionized waters, are placed in autoclave, with salt acid for adjusting pH value to 1.

(2) reactor is placed in baking oven, is warming up to 150 DEG C (pressure is 0.48MPa) and is incubated 120min, Then it is down to room temperature.

(3) reaction obtains the mixture of silicic acid and hydrochloric acid, is divided product using the method being separated by filtration after coagulation From.

Embodiment 2：

(1) building doors and windows glass discarded object, broken 20~60 mesh particles that sieve to obtain, weighs 1g cullet particles With 10mL deionized waters, it is placed in autoclave, with sulphur acid for adjusting pH value to 5.

(2) reactor is placed in baking oven, is warming up to 200 DEG C (pressure is 1.55MPa) and is incubated 30min, Then it is down to room temperature.

(3) reaction obtains the mixture of sodium sulphate, calcium sulfate, silicic acid, sulfuric acid.By filtering, the side of precipitation Method separates product.

Embodiment 3：

(1) the sealant glass discarded object of alkaline including earth metal (Sr, Ba), broken 20~60 mesh particles that sieve to obtain, 1g cullet particle and 5mL deionized waters are weighed, is placed in autoclave, with nitre acid for adjusting pH value extremely 3。

(2) reactor is placed in baking oven, is warming up to 300 DEG C (pressure is 8.58MPa) and is incubated 60min, Then it is down to room temperature.

(3) reaction obtains the mixture of strontium nitrate, barium nitrate, silicic acid, nitric acid.By filtering, the side of precipitation Method separates product.

Claims

1. a kind of glass refuse processing method, it is characterised in that comprise the following steps that：

(2) reactant is reacted under hydrothermal conditions；

(3) product that will be obtained is separated.

2. the method for claim 1, it is characterised in that step (1) is useless by 20~60 purposes of particle diameter Glass is abandoned for reactant, with water as solvent, is placed in high pressure resistant, corrosion resistant reaction vessel, reactant and The mass values of solvent are 1:20~1:Between 5, the addition of solvent is the 20~60% of reactor volume.

3. the method for claim 1, it is characterised in that additive therefor is organic acid or inorganic acid, Such as one or two in hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, acetic acid, pH value is adjusted between 0~7, excellent PH is selected between 2~5.

4. the method for claim 1, it is characterised in that the reaction vessel equipped with compound is placed in baking In case, in the range of 150~300 DEG C, pressure is within the scope of 0.48~8.58MPa and permanent with this understanding Temperature 30~120min of heating, takes out reactor and is cooled to room temperature.

5. method as claimed in claim 4, the optimal conditions of reaction are 200 ± 5 DEG C, pressure is 1.55 ± 0.15MPa, the reaction time is 60 ± 5min.

6. the method for claim 1, it is characterised in that the separation method used by step (3) is filtering, Complexing, precipitation, selectivity pass through or ion exchange in any one or more than two kinds.

7. the method as described in claim 1-6 is any, it is characterised in that glass discarded object is silicate glass, One or two or more kinds in sillico aluminate glass, silicon borate glass.

8. method as claimed in claim 7, it is characterised in that reaction primary product is silicic acid, accessory substance It is one or two or more kinds in chloride, sulfate, nitrate, phosphate or acetate.