Device for extracting glass fibers from waste printed circuit board and realizing energy utilization
A glass fiber and circuit board technology is applied in the field of recycling, processing and reuse of waste printed circuit boards to achieve the effects of long service life, promotion of resource reuse, speed of response and stability
Inactive Publication Date: 2014-11-05
BEIHANG UNIV
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Problems solved by technology
[0006] At present, there is no report on the use of waste printed circuit board non-metallic materials as energy
Method used
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Embodiment
[0067] use as figure 2 The device shown, a device for extracting glass fiber and energy utilization from waste printed circuit boards, the process is:
[0068] Step 1: Place quartz sand with a particle size of 0.5-1 mm at the air inlet of the fluidized bed reactor 5, and the thickness of the quartz sand is 400 mm at rest.
[0069] The second step: introduce air into the electric heater 2 through A induced draft fan 1 for heating treatment to form a hot air flow and output it to the fluidized bed reactor 5; the temperature of the hot air flow is 600°C; the gas flow rate of A induced draft fan 1 is 1000m 3 / h, wind pressure is p 1 =9KPa.
[0070] Step 3: transport the non-metallic materials of waste printed circuit boards with a particle size of 10-300 μm to the fluidized bed reactor 5 through the feeder 4; the conveying speed of the feeder 4 is 100Kg / h.
[0071] The fourth step: make the quartz sand placed in the first step and the non-metallic material of the waste printed...
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Abstract
The invention discloses a device for extracting glass fibers from a waste printed circuit board and realizing energy utilization. The device comprises an electric heater, a fluidized bed reactor, a middle and low temperature heat pipe exchanger I, a primary cyclone separator, a secondary cyclone separator, high temperature heat pipe exchangers, an intermediate frequency heater, a middle and low temperature heat pipe exchanger II and an induced draft fan B which are sequentially connected between an induced draft fan A and a liquid dust collector, wherein the middle and low temperature heat pipe exchanger I is arranged on the upper part of the fluidized bed reactor; the high temperature heat pipe exchangers are arranged in pipelines at the inlet and outlet ends of the intermediate frequency heater; the middle and low heat pipe exchanger II is arranged in the pipeline downstream the high temperature heat pipe exchanger; and the outlet end of the middle and low heat pipe exchanger II is connected with the inlet end of the induced draft fan B. The device combusts the waste printed circuit board in a fluidized bed at high temperature, performs the energy utilization by the heat pipe exchangers, obtains the glass fibers by the secondary cyclone separator, decomposes gaseous products at the high temperature in the intermediate frequency heater and finally performs dust collection treatment so as to effectively promote resource reutilization, save energy and reduce consumption.
Description
technical field [0001] The invention belongs to the technical field of recovery, treatment and reuse of waste printed circuit boards, in particular to a device for extracting glass fibers from waste printed circuit boards and utilizing energy. Background technique [0002] Printed circuit boards are an important part of electronics. However, with the acceleration of the current upgrading of electronic products, a large amount of electronic waste has also been generated, and the number of waste printed circuit boards has also increased. How to effectively recycle waste printed circuit boards has become a current concern It is a new issue facing my country's economic, social and environmental development. [0003] The physical recycling method of waste printed circuit boards is an environmentally friendly method that is widely used at present, and the recycling technology of metal materials obtained from recycling is very mature. However, when metal materials are recovered by...
Claims
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IPC IPC(8): B09B3/00B09B5/00C08J11/10
CPCY02W30/62Y02W30/82
Inventor 沈志刚麻树林蔡楚江张晓静李超孙志兴邢玉山
Owner BEIHANG UNIV