WO2008144986A1 - Procédé de recyclage de déchets - Google Patents

Procédé de recyclage de déchets Download PDF

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Publication number
WO2008144986A1
WO2008144986A1 PCT/CN2007/070516 CN2007070516W WO2008144986A1 WO 2008144986 A1 WO2008144986 A1 WO 2008144986A1 CN 2007070516 W CN2007070516 W CN 2007070516W WO 2008144986 A1 WO2008144986 A1 WO 2008144986A1
Authority
WO
WIPO (PCT)
Prior art keywords
acid
waste
hazardous
refuse
waste according
Prior art date
Application number
PCT/CN2007/070516
Other languages
English (en)
Chinese (zh)
Inventor
Zhongbo Hu
Jie Ren
Xiaokang Huang
Original Assignee
Beijing Sailige Corporation, Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Sailige Corporation, Ltd. filed Critical Beijing Sailige Corporation, Ltd.
Publication of WO2008144986A1 publication Critical patent/WO2008144986A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/20—Agglomeration, binding or encapsulation of solid waste

Definitions

  • the invention relates to a technology for recycling non-hazardous wastes based on integrated phosphorus-containing inorganic polymers and silica-alumina-based gelling systems, and a treatment technology for harmful wastes, especially for harmless, non-toxic or toxic and hazardous wastes. Processing method. Background technique
  • the technical problem to be solved by the present invention is to reuse a new generation of non-hazardous waste and a treatment technology for harmful wastes by integrating a phosphorus-containing inorganic polymer and a silica-alumina-based gelling system.
  • the technology and technical products of the present invention combine the advantages of the above two technologies and their products, and are the replacement of the above two technologies and their products. It can be used for the reuse of non-hazardous waste and the disposal of hazardous waste in higher performance and higher efficiency. With higher reliability, wider application range and higher efficiency.
  • the technical solution of the present invention to solve the problem is: a method for treating waste, characterized in that the method comprises the following steps: classifying the waste according to the characteristics of the object, respectively Harmful wastes and hazardous wastes; respectively, the separated non-hazardous wastes and hazardous wastes are sent to their respective crushers and pulverized into fine powder or fine-grained waste; and selected for the non-hazardous wastes, harmful
  • the binder of the waste and the raw material of the encapsulant are pretreated, and the pre-treated binder and the encapsulating raw material compound are respectively prepared into a solution with an appropriate amount of water; respectively, the binder and the encapsulant solution are respectively
  • the fine powder or fine particles of the non-hazardous waste or the hazardous waste are stirred into a slurry in respective agitators, and then the respective slurries are injected into respective molds to be solidified.
  • the weight of the waste accounts for 50%-95% of the final product.
  • the step of pretreating the non-hazardous waste, the hazardous waste binder, and the encapsulant raw material compound, including a metal oxide or hydroxide, or a mixture of some of the compounds The pretreatment is performed by heating the object to remove small molecular impurities that may be adsorbed on the surface of the object to be treated.
  • the heating temperature of the pretreatment heating process is 1000 ° C to 1500 ° C
  • the heat treatment time is For 10-60 minutes
  • the container used for the heat treatment is an A1 2 0 3 container or a MgO container or a metal platinum container, wherein the metal oxide or hydroxide is in the form of a powder.
  • the weight ratio of the pretreated oxide, hydroxide or the additive thereof to the pretreated reactant is (5-15): (95-85), and the additive is in the final product.
  • the content in the range is between 0% and 2%.
  • the mixture of the pretreated reactant and the additive may be mixed with a certain acid or a corresponding salt in a certain ratio to form a solution or a slurry; if an acid is used; , the weight ratio of the mixture to 50% acid is 1: 1 (+/-0.1), if salt is used, the weight ratio of the mixture to the salt is 1: 3 (+/- 0.5), and a certain amount of water, water and salt weight is also required.
  • the binder raw material compound includes one or more oxides and hydroxides, one or several acids or corresponding acid ions or corresponding salts, and a small amount of additives.
  • the oxides and hydroxides include, but are not limited to: oxides or hydroxides of the first, second, third, and fourth main groups of metals, oxides or hydroxides of the fourth, fifth, and sixth periodic transition metals. Things.
  • the acid or the corresponding acid ion or the corresponding salt includes all kinds of known phosphoric acid and corresponding phosphate ion or phosphate.
  • the phosphates or sulfates include, but are not limited to, various phosphates of sodium and potassium.
  • the small amount of additives include, but are not limited to, boric acid, oxalic acid, and the like.
  • the oxide of the first, second, third, and fourth main group metals may be Li 2 0, MgO, A1 2 0 3 , GaO, SiO 2 , etc.; the hydroxide may be Mg (0H) 2 , Ca(0H) 2 , NaOH, KOH, etc.; the oxide of the fourth, fifth, and sixth-period transition metals may be Ti0 2 , Fe 2 O 3 , ZrO, W03, etc.; It is Mn (OH) 2 , Zr(0H) 2 and the like.
  • the phosphate or sulfate may be potassium dihydrogen phosphate/sodium phosphate, dipotassium hydrogen phosphate/sodium or the like or a sulfate.
  • the present invention combines the advantages of both the phosphorus-containing inorganic polymer and the silica-alumina gelling system and its products.
  • Production is a complete green process, an absolute zero pollution process.
  • the invention has strong binding and solidifying ability for various harmless and harmful wastes, and will efficiently treat various toxic and harmful wastes, efficiently treat and utilize harmless wastes such as fly ash, coal gangue and metallurgical slag. It is of great application value to reduce pollution, make full use of various types of solid waste, and promote environmental and ecological protection.
  • Fig. 1 is a flow chart showing a method of processing waste. detailed description
  • the invention relates to a method for treating waste, the method comprising the steps of: classifying wastes according to object characteristics, respectively separating non-hazardous wastes and harmful wastes; separately separating the harmless ones Pre-treating the non-hazardous waste, the binder of the hazardous waste, and the encapsulating raw material compound, and preparing the pre-treated adhesive and the encapsulating raw material compound into a solution with an appropriate amount of water;
  • the binder, the encapsulant solution and the fine powder or fine particles of the non-hazardous waste or hazardous waste are stirred into a slurry in respective agitators, and then the respective slurry is injected into the respective mold to be solidified. forming.
  • the weight of the waste accounts for 50%-95% of the final product.
  • the pretreatment is performed by heating the object to remove small molecular impurities that may be adsorbed on the surface of the object to be treated.
  • the heating temperature of the pretreatment heating process is 1000 ° C to 1500 ° C
  • the heat treatment time is For 10-60 minutes
  • the container used for the heat treatment is an A1 2 0 3 container or a MgO container or a metal platinum container, wherein the metal oxide or hydroxide is in the form of a powder.
  • the weight ratio of the additive to the pretreated reactant is (5-15): (95-85), and the additive is in the final product.
  • the content is between 0% and 2%.
  • the mixture of the pretreated reactant and the additive may be mixed with a certain acid or a corresponding salt in a certain ratio to form a solution or a slurry; if an acid is used; , the weight ratio of the mixture to 50% acid is 1:1 (+/-0.1), and if salt is used, the weight ratio of the mixture to the salt is 1:3 (+/-0. 5), also need to add a certain amount of water.
  • the weight ratio of water to salt is 1: 2 (+/- 0.5), and the weight of water in the final product is between 3% and 35%.
  • the binder raw material compound includes one or several oxides and hydroxides, one or several acids or corresponding acid ions or corresponding salts, and a small amount of additives.
  • the oxides and hydroxides include, but are not limited to: oxides or hydroxides of the first, second, third, and fourth main groups of metals, oxides or hydroxides of the fourth, fifth, and sixth periodic transition metals. Things.
  • the acid or the corresponding acid ion or the corresponding salt includes all kinds of known phosphoric acid and corresponding phosphate ion or phosphate.
  • the phosphate or sulfate includes, but is not limited to, various phosphorus of sodium and potassium.
  • Acid salt also, the small amount of additives include, but are not limited to, boric acid, oxalic acid, and the like.
  • the oxide of the first, second, third, and fourth main group metals may be Li 2 0 , MgO , A1 2 0 3 , GaO, S i0 2 , etc.;
  • the hydroxide may be Mg (OH) 2 , Ca (0H) 2 , NaOH, KOH, etc.;
  • the oxide of the fourth, fifth, and sixth-period transition metals may be Ti0 2 , Fe 2 O 3 , ZrO, W0 3 , etc.;
  • the substance may be Mn (0H) 2 , Zr (0H) 2 or the like.
  • the phosphate or sulfate may be potassium dihydrogen phosphate/sodium, dipotassium hydrogen phosphate/sodium or the like.
  • the present invention can produce various types of high-quality building materials of various colors (cement ash, wood chips, furnaces, glass and domestic garbage, underwater sludge, etc.) using almost any kind of harmless solid and colloidal waste (fly ash, wood chips, furnaces, etc.) , building materials, structural materials, fireproof materials, etc.); as another example, the invention can be used to treat various contaminated solids, sludges and liquids, various harmful metals, various low-level radioactive wastes, and various harmful The effective encapsulation treatment of the chemicals; for example, the invention can be used for sludge solidification treatment of reclamation, backfilling and embedding of abandoned mines, and the like.
  • the product can be molded at room temperature or even at low temperature, and the process equipment is single and mature. low cost.
  • the product molding process is a purely inorganic chemical process that does not release any harmful substances and does not cause any secondary pollution.
  • the product has high compressive and flexural strength, excellent thermal stability and radiation resistance.
  • the product is compact. Product performance and cost can be adjusted to some extent.
  • the proportion of waste in the finished product (weight or volume) can be as high as 95%.
  • the invention effectively improves the environment while efficiently utilizing various types of solid wastes to turn waste into treasure. Benefit the country and the people.
  • the invention adopts the mature production process of the single cylinder, and uses various harmless wastes as the main raw materials to prepare products with excellent physical properties such as mechanical, mechanical and thermal stability. Or efficient and reliable packaging of hazardous waste.
  • the process can be described as follows: First, according to the characteristics of the non-hazardous waste to be used or the hazardous waste to be treated, the raw material selected as the adhesive or encapsulant is pretreated, and then pretreated. Several raw materials are mixed with water in proportion to form a solution. One or more kinds of wastes are added to the obtained solution, and stirred to form a slurry. Finally, the obtained slurry is injected into a mold and solidified.
  • the technical features room temperature process, no additional energy; rapid formation of hard, to the quasi-ceramic finished product; finished product performance and molding process can be regulated; extremely high efficiency of handling hazardous waste; extremely high efficiency of using non-hazardous waste; In most cases, the product has a slight expansion during solidification molding, which results in a good seal.
  • the product has excellent tightness; it can be combined with almost any material except plastic and rubber, and has strong plastic/rubbery properties.
  • the preparation equipment and process of the technology are the same as or similar to the common concrete, and no additional molding energy is needed.
  • the extensive utilization of common waste effectively improves the economic benefit of the technology. Considering its particularly excellent physical properties (including low porosity, high resistance) Flammability and high strength), its performance and price ratio is extremely competitive.
  • This technology is a green process with no secondary pollution.
  • the product composed of the method of the invention has a compressive strength of up to 83 MPa and a flexural strength of up to l lMPa.
  • the product has excellent thermal stability and is resistant to radiation.
  • the weight or volume of waste in the finished product can be as high as 95%.
  • Appearance porosity is about 0
  • Compressive strength 8000-12000 ps i can change the flexural strength with fillers and additives 900-1600 ps i (6. 2-l lMPa) Adding fiber can enhance the flexural strength section toughness 0. 3- 5 ⁇ : The addition of fiber, whisker, etc. can enhance the toughness water stability in the range of PH3. 5-11 stable
  • the coefficient of thermal expansion is about 10-7 °c and varies with additives.
  • Flame-retardant adhesive is excellent in flame retardancy even when mixed with wood chips. It has good flame retardancy, heat stability, and good thermal stability. The thermal stability of the finished product may be affected by additives. Radiation resistance (Beta, Gamma ray, etc.) is strong
  • the ratio of binder to filler is the filler
  • the amount of water is generally sensitive to the additive and its particle size by half the weight of the binder. Molding time is a few minutes to a few hours. A small amount of the additive can change the molding speed.
  • the viscosity of the slurry before molding can be 200-1000 cps. Change the viscosity of the heat production exothermic process, can be cured at low temperature.
  • the pH of the exothermic slurry can be controlled by the pretreatment of the additive.
  • the pH of the product from strong acid to neutral liquid is about 8
  • Color pure adhesive porcelain is white. It can be changed by adding ceramic pigments. The dimensional change during solidification molding is slightly expanded. It can be formed according to the complex mold shape.
  • the production equipment is usually used in concrete production equipment and any material outside the plastic. Cement is slightly more expensive, but the performance is superior

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

L'invention concerne un procédé de recyclage de déchets qui consiste à : trier les déchets inoffensifs et les déchets dangereux en fonction de la propriété des déchets; les broyer en poudre fine ou en particules fines respectivement dans un désintégrateur; sélectionner respectivement un agent de liaison et un agent d'encapsulation et effectuer un prétraitement, ajouter une bonne quantité d'eau à l'agent de liaison et à l'agent d'encapsulation après le prétraitement pour obtenir une solution; mélanger respectivement sous forme de boue l'agent de liaison, l'agent d'encapsulation, la poudre fine ou les particules fines des déchets inoffensifs et des déchets dangereux dans un mélangeur, et injecter la boue dans un moule et solidifier le moule. Ce procédé offre une bonne capacité de liaison et de solidification à tous types de déchets inoffensifs et dangereux, et permet d'éliminer efficacement les types de déchets dangereux et d'éliminer et d'utiliser efficacement les déchets inoffensifs tels que la cendre volante, la gangue et le mâchefer de la métallurgie.
PCT/CN2007/070516 2007-05-30 2007-08-17 Procédé de recyclage de déchets WO2008144986A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNB2007101057933A CN100453190C (zh) 2007-05-30 2007-05-30 废弃物的处理方法
CN200710105793.3 2007-05-30

Publications (1)

Publication Number Publication Date
WO2008144986A1 true WO2008144986A1 (fr) 2008-12-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2007/070516 WO2008144986A1 (fr) 2007-05-30 2007-08-17 Procédé de recyclage de déchets

Country Status (3)

Country Link
CN (1) CN100453190C (fr)
HK (1) HK1110262A1 (fr)
WO (1) WO2008144986A1 (fr)

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CN101319126A (zh) * 2008-07-15 2008-12-10 北京赛力格科技发展有限公司 无机粘合剂及其制备方法和应用
CN101328031A (zh) * 2008-08-04 2008-12-24 北京赛力格科技发展有限公司 固化剂和聚合物及方法
CN103011711A (zh) * 2012-12-24 2013-04-03 胡中波 无机固体废弃物用粘结剂和方法
CN110756548A (zh) * 2019-09-26 2020-02-07 安徽科技学院 一种城市生活垃圾固废处理管理系统
CN115722518B (zh) * 2022-10-21 2023-10-24 太仓金马智能装备有限公司 一种建筑装修垃圾低碳高效资源化处置系统及其方法

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US5265545A (en) * 1989-04-12 1993-11-30 Miltox Holdings Pte, Limited Method and apparatus for waste treatment
CN1167897C (zh) * 1995-11-08 2004-09-22 Plas有限公司 废物的处理方法和装置
CN1300647A (zh) * 1999-12-22 2001-06-27 张中明 一种利用生活垃圾制备室外建材的工艺
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Publication number Publication date
HK1110262A1 (en) 2008-07-11
CN100453190C (zh) 2009-01-21
CN101099971A (zh) 2008-01-09

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