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Method and device of simultaneously carrying out formaldehyde loaded activated carbon regeneration and desorbed gas quenching

A regeneration device and activated carbon technology, applied in chemical instruments and methods, separation methods, filter regeneration, etc., can solve the problems of complicated regeneration devices, increase regeneration costs, etc. Effects of processing steps

Inactive Publication Date: 2017-05-31
魏汝涵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This complicates the regeneration device and increases the regeneration cost

Method used

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  • Method and device of simultaneously carrying out formaldehyde loaded activated carbon regeneration and desorbed gas quenching
  • Method and device of simultaneously carrying out formaldehyde loaded activated carbon regeneration and desorbed gas quenching

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0013] 1. Prepare saturated formaldehyde-loaded activated carbon in advance, and calculate and record the adsorption capacity of activated carbon.

[0014] 2. Carry out a blank test without metal wire (metal powder), that is, simple microwave radiation regeneration as a control. Weigh 5g of formaldehyde-loaded activated carbon and put it into the regeneration device 3 and seal it. Then put the regeneration device 3 in the microwave oven and connect the pipeline. Keep purging until the end of the experiment. After the experiment, the desorbed gas was purified. The adsorption characteristics of activated carbon after microwave regeneration, the pore structure of activated carbon and the basic physical and chemical characteristics of activated carbon under different conditions such as microwave power, regeneration time, and activated carbon particle size were investigated.

[0015] 3. Take by weighing 5g of formaldehyde-loaded activated carbon and an appropriate amount of metal...

specific Embodiment approach 2

[0019] 1. Prepare saturated formaldehyde-loaded activated carbon in advance, and calculate and record the adsorption capacity of activated carbon.

[0020] 2. Weigh 50 kg of formaldehyde-laden activated carbon and metal wire (mass ratio 49:1) and put them into the storage hopper 1 on the regeneration device. The maximum continuous processing capacity of the microwave regeneration device 3 is 100 kg / h. By controlling the feed 2 and the output The rotating speed of the feeding device 6 is regulated; the output power of the microwave magnetron 4 is continuously adjustable from 0 to 10 kW. Before the start of the microwave, 3 L / min of nitrogen was introduced to purge the regeneration device 3, and the purge was kept until the end of the experiment. The adsorption characteristics of activated carbon after microwave regeneration, the pore structure of activated carbon, and the loss on ignition of activated carbon under different microwave power and regeneration time conditions were ...

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Abstract

The invention discloses a method and a device of simultaneously carrying out formaldehyde loaded activated carbon regeneration and desorbed gas quenching. Metal powder or a metal wire is placed in a regeneration device, and formaldehyde loaded activated carbon regeneration and desorbed gas quenching are realized simultaneously by utilizing microwave-induced metal discharge. The method and the device have two advantages that firstly, a heat effect of microwave-induced metal discharge: a great quantity of heat is released within a short time to enable the ambient temperature to rise at high speed, and the regeneration rate of activated carbon can be increased; and a plasma phenomenon: plasmas have the certain catalysis to chemical reaction, but are excited and generated by metal discharge, so that degradation and desorption of generated formaldehyde are accelerated, amorphous carbon is generated to be adhered to and deposited in the surface interface of the regenerative activated carbon, and modified activation action is exerted on the regenerative activated carbon; and secondly, from the angles of economy and the regeneration device, activated carbon regeneration and desorbed gas quenching are simultaneously carried out in the same device, the step of processing desorbed gas after regeneration is saved, and thus the regeneration cost is saved.

Description

technical field [0001] The invention relates to the technical field of energy saving and emission reduction, in particular to a method and a device for synchronously performing regeneration of activated carbon loaded with formaldehyde and quenching of desorption gas. Background technique [0002] Formaldehyde in indoor air has become the main pollutant affecting human health, especially formaldehyde in winter air is the most harmful to human body. The main sources of formaldehyde in the air of our country are as follows: (1) Artificial boards such as plywood, blockboard, medium density fiberboard and particle board used for interior decoration. The adhesive used in the production of wood-based panels uses formaldehyde as the main component. The residual and unreacted formaldehyde in the panels will gradually be released to the surrounding environment, which is the main formaldehyde in the indoor air. (2) Furniture made of wood-based panels. In order to pursue profits, some...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/34B01J20/20
CPCB01J20/3441B01J20/3416
Inventor 魏汝涵
Owner 魏汝涵
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