Environmental protection recycling method of deserted brominated flame retardant plastics

A recovery method and a brominated flame retardant technology are applied in the removal of solid waste, special forms of dry distillation, coke ovens, etc., to achieve the effects of low cost, reduced resource cost and simple process

Active Publication Date: 2010-08-11
上海开鸿环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The comprehensive utilization rate of this kind of solid waste is only about 15%, which brings great pressure to the environment

Method used

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  • Environmental protection recycling method of deserted brominated flame retardant plastics
  • Environmental protection recycling method of deserted brominated flame retardant plastics

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Embodiment 1

[0028] Such as figure 1 Shown, carry out the inventive method according to the following steps:

[0029] 1) Grind relatively dry calcium carbide with a moisture content of not more than 10% to 80-100 mesh, and measure the moisture content of each batch of calcium carbide for batching; then mix calcium carbide and clay in a weight ratio of 1:0.3 Mix, make the bead that diameter is less than 0.5cm with the ball making machine (the molding pressure of ball making machine is 20MPa) and ventilate and dry, guarantee moisture content2 , which will not be broken after pyrolysis so as to facilitate separation and recovery;

[0030] 2) Coarsely crushing waste brominated flame-retardant plastics to fragments whose size meets the requirements for feeding the pyrolysis furnace;

[0031] 3) Next, mix the calcium carbide pellets obtained in step 1) and the plastic fragments obtained in step 2) in a weight ratio of 4:1, and then feed them into a feed pyrolysis furnace in an inert atmosphere ...

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Abstract

The invention relates to an environmental protection recycling method of deserted brominated flame retardant plastics. The method comprises the following step: pyrolyzing deserted flame retardant plastics and industrial waste residue calcium carbide together to distribute bromine in solid residues for further recycling and inhibit the generation of brominated tetrachloro dibenzo-p-dioxin / furan (PBDD / F). By adopting the invention, the problem of the common pyrolytic process that bromine in the three-phase product is not easy to recycle, the purification processing cost is high and PBDD / F is generated is solved and the win-win situation for resources and environment can be realized.

Description

Technical field: [0001] The invention relates to an environment-friendly recovery method of brominated flame-retardant plastics. Specifically, the present invention relates to a co-pyrolysis of industrial waste slag electric lime and waste brominated flame-retardant plastics, so that bromine can be better controlled in the residue and can be exchanged for bromine that can inhibit the formation of brominated dioxin-like pollutants. An environmentally friendly recycling method for alternative flame-retardant plastics. Background technique: [0002] Brominated Flame Retardants (BFR) are widely used in electronic products such as circuit boards (PCBs), connectors, wires and cables, and housings for their excellent electrical insulation, adhesiveness, and self-flammability. Parts with flame retardant properties, etc. Most BFRs have high persistence and lipophilicity and are easy to accumulate in humans and animals, endangering the endocrine system and affecting the balance of h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B09B5/00C10B53/07C10B57/04
CPCY02P20/143
Inventor 关杰李英顺徐敏李靖陈胜文苏丽
Owner 上海开鸿环保科技有限公司
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