CN1480399A

CN1480399A - Method for preparing spherical active cardon with base of resin

Info

Publication number: CN1480399A
Application number: CNA031785735A
Authority: CN
Inventors: 凌立成; 吕春祥
Original assignee: Shanxi Institute of Coal Chemistry of CAS
Current assignee: Shanxi Institute of Coal Chemistry of CAS
Priority date: 2003-07-18
Filing date: 2003-07-18
Publication date: 2004-03-10
Anticipated expiration: 2023-07-18
Also published as: CN100417590C

Abstract

A spherical resin-base activated carbon is prepared from spherical resin through oxidizing in air, high-temp charring and steam activating. Its advantages are high strength etc.

Description

A kind of preparation method of resin base spheric active carbon

Technical field:

The invention belongs to a kind of preparation method of gac, being specifically related to a kind of is the method for feedstock production spheric active carbon with the spherical resin.

Background technology:

Characteristics such as spheric active carbon has good sphericity, physical strength height, resistance is little, adsorption desorption speed is fast, nontoxic, physiological compatibility is good have important effect in fields such as environmental protection, medical treatment, military affairs, chemical industry.The raw material of preparation spheric active carbon divides two big classes: (1) coking by-products pitch, tar and petrochemical by-product residual oil, pitch etc., this spheric active carbon becomes asphalt-base globular active carbon.(2) spherical resin raw material, this spheric active carbon is called the resin base spheric active carbon.Zl97101617.8, ZL98104975.3, ZL99102012.X and ZL98123530.1 have reported the method for the preparation and the pore structure control of asphalt-base globular active carbon, with pitch or tar is raw material, with the hydrocarbons is properties-correcting agent, adopt the emulsion process balling-up, prepare spheric active carbon by the oxidation carbonization-activation.ZL98115717.3 has reported the preparation method of alkyd resin based spheric active carbon, is raw material with resol, adds pore-creating agent during nodularization, prepares spheric active carbon through peroxidation, charing and activation again.All there is a common weakness in above-mentioned preparation spheric active carbon, and the established technology step is more, control accuracy height, production cost height.

Summary of the invention:

It is simple to the purpose of this invention is to provide a kind of technology, easy to operate, the preparation method of the resin base spheric active carbon that production cost is low.

It is raw material that the present invention adopts commercial spherical resin, by atmospheric oxidation, again through charing and activation preparation spheric active carbon.Concrete steps are:

1. the oxidation of spherical resin: spherical resin speed with 0.5-5 ℃/min in air is warmed up to 200-300 ℃, makes the full cross-linked curing of spherical resin;

2. the charing of spherical resin and activation: under protection of inert gas, the solidified spherical resin is warming up to 700-1000 ℃ of following charing, feeds steam activation then, make the resin base spheric active carbon.

This patent has following characteristic:

1, raw material sources are extensive, and are cheap.

2, operational path is simple, and is easy to operate, and cost is low.

3, spheric active carbon intensity height.

Embodiment:

Embodiment 1:

In the bake oven type c oxidation furnaces, 100g001 * 7 spherical resins speed with 0.5 ℃/min in air is warmed up to 200 ℃ of crosslinking curings.In fluidized-bed carbonization-activation device, under nitrogen protection, the solidified spherical resin is warming up to 700 ℃ of following charings, the speed with 1ml/min feeds steam activation 90min then, makes the resin base spheric active carbon.Performance sees Table 1.

Embodiment 2-6 and performance see Table 1.

Table 1:

Embodiment	????1	????2	????3	???4	???5	????6
Embodiment	????1	????2	????3	???4	???5	????6	Raw material	??001×7	??D001×7	??201×7	??301	??331	??D401
Rate of oxidation ℃/min	??0.5	??5	??3	??1	??1.5	??5	Raw material	??001×7	??D001×7	??201×7	??301	??331	??D401
Rate of oxidation ℃/min	??0.5	??5	??3	??1	??1.5	??5	Warm eventually ℃ of oxidation	??200	??300	??250	??230	??260	??280
Carbonization-activation temperature ℃	??700	??800	??1000	??850	??820	??900	Warm eventually ℃ of oxidation	??200	??300	??250	??230	??260	??280
Carbonization-activation temperature ℃	??700	??800	??1000	??850	??820	??900	Soak time min	??90	??60	??10	??30	??40	??20
BET specific surface area (m ²/g)	??450	??721	??475	??803	??689	??621	Soak time min	??90	??60	??10	??30	??40	??20
BET specific surface area (m ²/g)	??450	??721	??475	??803	??689	??621	Total pore volume ml/g	??0.25	??0.47	??0.28	??0.45	??0.40	??0.43
Micropore pore volume ml/g	??0.22	??0.39	??0.20	??0.41	??0.35	??0.35	Total pore volume ml/g	??0.25	??0.47	??0.28	??0.45	??0.40	??0.43

Claims

1. the preparation method of a resin base spheric active carbon is characterized in that comprising the steps: the oxidation of (1) spherical resin: spherical resin speed with 0.5-5 ℃/min in air is warmed up to 200-300 ℃, makes the full cross-linked curing of spherical resin; (2) charing of spherical resin and activation: under protection of inert gas, the solidified spherical resin is warming up to 700-1000 ℃ of following charing, feeds steam activation then, make the resin base spheric active carbon.

2. the preparation method of the described a kind of resin base spheric active carbon of claim 1 is characterized in that described carbonization temperature is 800-900 ℃.