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Method for preparing carbon microspheres from waste phenolic foam as raw material

A technology of phenolic foam and carbon microspheres, which is applied in the field of energy saving and emission reduction, can solve the problems of waste phenolic foam not being treated efficiently, and achieve the effects of low utilization rate, good sphericity, and good adsorption rate

Inactive Publication Date: 2017-06-13
东北大学秦皇岛分校
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problem that waste phenolic foam has not been efficiently treated, the object of the present invention is to provide a method for preparing carbon microspheres using waste phenolic foam as raw material

Method used

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  • Method for preparing carbon microspheres from waste phenolic foam as raw material
  • Method for preparing carbon microspheres from waste phenolic foam as raw material
  • Method for preparing carbon microspheres from waste phenolic foam as raw material

Examples

Experimental program
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Effect test

Embodiment 1

[0032] A method for preparing carbon microspheres with waste phenolic foam as raw material, comprising the following steps:

[0033] S1, the preparation of phenolic resin microspheres:

[0034] S1.1. Take 50g of waste phenolic foam, place it in 300g of deionized water, and add 0.5g of gum arabic powder;

[0035] S1.2. Heat to 95°C, keep warm for 4 hours under mechanical stirring;

[0036] S1.3, after cooling down to room temperature, filter, wash, and dry to obtain phenolic resin microspheres;

[0037] S2. Carbonization activation of phenolic resin microspheres:

[0038] S2.1. Take 150g of phenolic resin microspheres prepared by S1, put them into a quartz crucible and place them in a high-temperature atmosphere furnace, and feed nitrogen into them;

[0039] S2.2. Raise the temperature to 800°C at a heating rate of 3°C / min, keep it warm for 2 hours, and cool the atmosphere furnace to room temperature at a cooling rate of 3°C / min to obtain carbonized microspheres;

[0040] S...

Embodiment 2

[0047] The difference from Example 1 is that the activation temperature in S2.4 is 1050°C.

[0048] Others are with embodiment 1.

Embodiment 3

[0050] The difference from Example 1 is that the activation temperature in S2.4 is 1100°C.

[0051] Others are with embodiment 1.

[0052] Adopt SSA-4300 pore specific surface area analyzer to measure the specific surface area of ​​the target product carbon microspheres of embodiment 1-3 respectively, simultaneously according to national standard GB / T12496.10-1999 to embodiment 1-3 target product carbon microspheres carried out respectively Adsorption determination of methylene blue: first weigh a certain amount of carbon microspheres, put them into an initial solution of a certain concentration, and measure the adsorption rate after adsorption for a certain period of time.

[0053] The test results of specific surface area and adsorption effect are shown in Table 1.

[0054]

[0055] It can be seen from Table 1 that as the activation temperature increases, the reaction speed increases, and the mesopores and macropores increase slowly, leading to an increase in the adsorpt...

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Abstract

The invention belongs to the technical field of energy conservation and emission reduction, and discloses a method for preparing carbon microspheres from waste phenolic foam as a raw material. The method comprises the following steps: heating 40-60g of waste phenolic foam, 200-400g of water and 0.4-0.6g of acacia gum powder to 90-100 DEG C, performing heat-preservation reaction for 3-5 hours with stirring, cooling, filtering, washing, and drying so as to obtain phenolic resin microspheres; and carbonizing the prepared phenolic resin microspheres, and activating, thereby obtaining target products, namely the carbon microspheres. The carbon microspheres prepared from the waste phenolic foam as the raw material have a good degree of sphericity and a good specific surface area, and have a relatively good adsorption rate on microparticles and harmful gases. The carbon microspheres ensure good spherical shapes without reducing specific surface areas and adsorption capacities of carbon microspheres, an effective utilization mode is provided for the waste phenolic foam, the targets of low carbon, energy conversation and emission reduction are met, and the situations that conventional waste phenolic foam is low in utilization rate and poor in regeneration effect are alleviated.

Description

technical field [0001] The invention belongs to the technical field of energy saving and emission reduction, and specifically relates to a method for preparing carbon microspheres by using waste phenolic foam as a raw material. Background technique [0002] In recent years, phenolic rigid foam products have rapidly become popular and are widely used in construction industries such as external wall insulation. For example, since 2011-2013, the production volume of aluminum foil-faced rigid phenolic sandwich panels has been 12.7346 million square meters and 14.5252 million square meters, 17.42 million square meters, with an average annual growth rate of 15%; the production volume of phenolic foam boards for external wall insulation from 2011 to 2013 was 10.2 million square meters, 13.2 million square meters, and 15.84 million square meters, with an average annual growth rate of 25% growth rate, it can be seen that the amount of phenolic foam is large and the scope is wide. Ho...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30B01D53/02
CPCB01J20/20B01D53/02B01D2253/102B01D2253/304B01J20/28016
Inventor 马知雨王海旺何发亮陈铭芸魏新芳朱婉仪卞嘉莉孙含丹徐宏宇吴佳洁邓圆冯敏威
Owner 东北大学秦皇岛分校
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