Treatment method and device for solid waste

A technology of solid waste and treatment method, applied in the field of high-efficiency resource utilization of solid waste, can solve the problems of increasing treatment costs, difficulty in landfill site selection, and limitation of incineration treatment methods, and achieves great social and economic benefits, Achieve efficient resource utilization and alleviate the effect of fossil energy shortage

Inactive Publication Date: 2017-12-26
HUIZHOU RES INST OF SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sanitary landfill is a solid waste treatment method that improves the traditional landfill technology. Although this method has the advantages of simple process, low investment, large processing capacity and low operating cost in terms of solid waste treatment, there are also disadvantages. Many defects: occupying a large amount of land, it is more and more difficult to select the site of the landfill; The waste explodes and poses a threat to human health; therefore, in the solid waste disposal methods of various countries, the proportion of sanitary landfill is gradually decreasing
But there are also many shortcomings: the composting cycle is long and the area is large; bricks, plastics, metals and other solid waste materials that cannot be degraded by microorganisms must be sorted out, which increases the cost of

Method used

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  • Treatment method and device for solid waste

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Effect test

Embodiment 1

[0033] Catalyst preparation: Classify carbon nanotubes according to size and pore size to obtain graded carbon sources as hard templates; then dissolve 1.0 g sodium metaaluminate in 2 mL deionized water, add organic structure-directing agent tetraethyl hydroxide Ammonium, and then under the premise of controlling the silicon-aluminum ratio (1:10), add tetraethyl silicate, stir well and form a gel, transfer it to a high-temperature and high-pressure reactor with a polytetrafluoroethylene liner, and place Crystallization was carried out in a drying oven at 120 °C for 48 h. Afterwards, the reaction solution was transferred into an aqueous solution containing graded inorganic carbon materials, stirred for 5 h, and continued to crystallize for 48 h. After the crystallization is completed, the solid is separated by centrifugation, filtered by suction, washed, dried, and calcined at 600°C to obtain a multi-stage molecular sieve. A high-efficiency catalyst, Ni-ZSM-5, is obtained by l...

Embodiment 2

[0036] Catalyst preparation: Classify carbon nanofibers according to size and pore size, and obtain graded carbon sources as hard templates; then dissolve 1.0 g of sodium metaaluminate in 2 mL of deionized water, add organic structure-directing agent tetraethyl base ammonium hydroxide, and then under the premise of controlling the silicon-aluminum ratio (1:20), add tetraethyl silicate, stir well and form a gel, and transfer it to a high-temperature and high-pressure reactor with a polytetrafluoroethylene liner , placed in a drying oven at 120 °C for 48 h to crystallize. Afterwards, the reaction solution was transferred into an aqueous solution containing graded inorganic carbon materials, stirred for 5 h, and continued to crystallize for 48 h. After the crystallization is completed, the solid is separated by centrifugation, filtered by suction, washed, dried, and calcined at 600°C to obtain a multi-stage molecular sieve. A high-efficiency catalyst, Au-ZSM-5, was obtained by l...

Embodiment 3

[0039] Catalyst preparation: Classify carbon nanotubes according to size and pore size, etc., to obtain graded carbon sources as hard templates; then dissolve 1.0 g of sodium metaaluminate in 2 mL of deionized water, add organic structure-directing agent tetraethyl base ammonium hydroxide, and then under the premise of controlling the silicon-aluminum ratio (1:20), add tetraethyl silicate, stir well and form a gel, and transfer it to a high-temperature and high-pressure reactor with a polytetrafluoroethylene liner , placed in a drying oven at 120 °C for 48 h to crystallize. Afterwards, the reaction solution was transferred into an aqueous solution containing graded inorganic carbon materials, stirred for 5 h, and continued to crystallize for 48 h. After the crystallization is completed, the solid is separated by centrifugation, filtered by suction, washed, dried, and calcined at 600°C to obtain a multi-stage molecular sieve. A high-efficiency catalyst, Co-ZSM-5, was obtained ...

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Abstract

The invention discloses a treatment method and device for solid waste. The treatment method comprises the following steps that (1) the solid waste is pyrolyzed; and (2) solid residues generated by pyrolysis are activated into activated carbon, and gas generated by pyrolysis is catalytically modified through a catalyst. The treatment device is composed of six parts of a pyrolysis furnace, an activation furnace, a catalysis tower, a rectifying tower, a liquid storage tank and a gas storage tank. The pyrolysis reaction of the solid waste is conducted in the pyrolysis furnace, and the generated solid residues enter the activation furnace to be activated to generate the activated carbon; generated organic matter is catalytically modified through the catalysis tower and then passes through the rectifying tower, and thus organic fine chemicals are obtained; and generated non-condensable combustible gas enters the gas storage tank, and combustible gas generated in the activation furnace enters the gas storage tank as well. The fine chemicals with the high additional value can be obtained, meanwhile, the solid residues are effectively converted into the activated carbon, and accordingly efficient multi-component resource utilization of the solid waste is achieved.

Description

technical field [0001] The invention relates to a method for efficient resource utilization of solid waste, in particular to a treatment technology for solid waste. Background technique [0002] In recent years, due to the increasing shortage of energy and resources in the world and the emergence of various solid waste resource utilization methods, solid waste has shifted from the narrow concept of simple collection, transportation, treatment, and landfill to suppressing solid waste production and improving solid waste production. Material resource utilization rate is up. It is a general trend that solid waste is developed and utilized as a resource. At present, solid waste treatment should achieve "three modernizations", that is, harmlessness, reduction, and recycling. The disadvantages of the landfill method have made it limited. For example, Switzerland has promulgated laws to cancel the solid waste landfill method; composting treatment methods should not be expanded du...

Claims

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Application Information

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IPC IPC(8): B09B3/00C10B53/00C10B53/02C01B32/324
CPCC10B53/00C10B53/02B09B3/40Y02E50/10
Inventor 陈宇纪红兵周建玲段迪陈曾
Owner HUIZHOU RES INST OF SUN YAT SEN UNIV
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