CN101337671B - Method for preparing column-shaped active carbon - Google Patents

Abstract

The invention relates to the activated carbon manufacturing field, in particular to a method of manufacturing columnar activated carbon, and solves the problems of high production cost, environmental pollution, low productivity, etc. caused by the addition of coal tar and hydraulic shaping devices required by the prior columnar activated carbon. A shaping device adopted by the invention when shaping is a feed granulation device manufactured by Fuji Seiki Equipment Manufacture Company, and the type of the shaping device is F-150. When coal is proportioned, coal powder is 72-78 percent, asphalt is 8-12 percent, water is 12-18 percent, the temperature of the coal powder is 18-20 DEG C, the temperature of water is 50-80DEG C, and the coal powder consists of 30-45 percent of soft coal, 25-35 percent of coke powder and 30-45 percent of coking coal. With the adoption of the shaping device, the method has the advantages of low shaping pressure, moderate operation conditions, improved productivity, simple process, reduced environmental pollution, saved heat energy, reduced production cost, and significantly improved the yield of products. The technical data of the prepared finished columnar activated carbon granules can be completely in accordance with the requirements. Furthermore, the method overcomes the technical prejudice of the technical field that only coal tar and the hydraulic shaping device can ensure the shaping of coal quality and the strength of activated carbon.

Description

A kind of manufacture method of columnar activated carbon

Technical field

The present invention relates to gac and make the field, be specially a kind of manufacture method of columnar activated carbon.

Background technology

Gac is a kind of carbonaceous material of hole prosperity, have very big specific surface area and good adsorption performance, excellent chemical stability and physical strength, acid-and base-resisting, heat-resisting is widely used in chemical metallurgy, light textile, national defence, field such as environmental protection and daily life, along with the raising of progress of science and technology and people's living standard, the purposes of gac will be more and more widely.A kind of-columnar activated carbon as gac is with selected fat coal, through fragmentation, abrasive dust, mix pinch, operations such as moulding, charing and activation make, and have physical strength height, characteristics that specific surface area is big, rate of adsorption is fast, bed resistance is little, and is easy to regeneration; Be black particle shape, nonpoisonous and tasteless, press the difference of aspects such as feed coal character, charing and activating process, the columnar activated carbon of making has various properties: rational pore texture, good adsorption performance, physical strength height, easy repeated regeneration, characteristics such as cost is low; Be used for the purification of toxic gas, off gas treatment, the purifying treatment of industry and domestic water, aspects such as solvent recuperation.

At present, the ature of coal columnar activated carbon all is with coal tar or adopts coal tar to add the production method of pitch as binding agent, the adding proportion of coal tar is bigger, and employing hydraulic efficiency installation moulding, the defective that exists is as follows: the large usage quantity of coal tar, make production cost move in a high position along with the rise of coal tar price, the profit margin of whole industry is progressively dwindled; Coal tar can decompose generation some harmful, toxic substances in process of production, and smell is abominable, and environment is caused severe contamination; In addition, coal tar all must carry out under the uninterrupted heating condition of steam in storage, preparation, course of conveying, and heat energy consumption is bigger; Adopt hydraulic efficiency installation during moulding at last, throughput is less, and forming pressure is bigger, and operational condition is relatively poor.

Summary of the invention

The present invention need add coal tar and adopt shaped by fluid pressure equipment in order to solve existing columnar activated carbon moulding, causes problems such as production cost height, contaminate environment, throughput are little, and a kind of manufacture method of columnar activated carbon is provided.

The present invention adopts following technical scheme to realize: a kind of manufacture method of columnar activated carbon, comprise feed coal is broken and wear into coal dust, add tackiness agent then and carry out coal blending, kneading, moulding, the molding device that innovative point of the present invention adopts when being moulding is that Japanese only device fabrication company produces, model is the feed granulating equipment of F-150, and granulation pressure is 6.0-8.0MPa;

During coal blending, coal dust is 72-78%, and tackiness agent is 8-12%, and water is 12-18%, and the temperature of coal dust is 18-30 ℃, and the temperature of water is 50-80 ℃; Described tackiness agent is a pitch, and used coal dust is made of 30-45% bituminous coal, 25-35% coke powder and 30-45% coking coal.

With raw coal with grind into the 150-200 order after pitch mixes according to the above ratio, the water that adds corresponding weight then, after mixing and mediating certain hour, send into produce by Japan only device fabrication company, model is the feed granulating equipment of F-150, at granulation pressure is under the condition of 6.0-8.0MPa, rolling extruding by the equipment pressure roller, shaped granule is extruded from the mould below, cut into the strip particle of length uniformity again through cutting knife, after charing, activation procedure obtain the finished product, after testing, its index is briquetting intensity 〉=40kg/cm ², desulfurization value 〉=20mg/g, moisture content≤3% can satisfy the service requirements of users at home and abroad fully.Above-mentioned model is that the feed granulating equipment of F-150 is existing known products, and its concrete structure and principle of work do not elaborate at this.

The present invention adopts the known equipment that is used for the feed granulation at present, at lower pressure and do not add coal tar and under above-mentioned optimum condition, make and have the following advantages active carbon forming:

1, owing to adopted this molding device, forming pressure is lower, the operational condition gentleness, and improved throughput greatly;

2, broken away from the method that adopts coal tar production granulated active carbon fully, technology is easy, has reduced environmental pollution, has saved heat energy, and production cost has reduced by 1/4th, meets the requirement of national energy-saving and emission-reduction fully;

3, this molding device is stable, makes the product yield significantly improve;

4, the finished product columnar activated carbon particulate technical indicator that makes can meet the demands fully;

In a word, the present invention has overcome the technology prejudice that the present technique field can only could guarantee ature of coal moulding and gac intensity with coal tar and shaped by fluid pressure equipment, for whole gac industry and national energy-saving and emission-reduction work, has made epoch-making contribution.

Embodiment

Embodiment 1:

A kind of manufacture method of columnar activated carbon, comprise feed coal is broken and wear into coal dust, add tackiness agent then and carry out coal blending, kneading, moulding, the molding device that adopts during moulding is that Japanese only device fabrication company produces, model is the feed granulating equipment of F-150, and granulation pressure is 6.0-8.0MPa; During coal blending, coal dust is 72%, and pitch is 12%, and water is 16%, and the temperature of coal dust is 18 ℃, and the temperature of water is 50 ℃; Used coal dust is made of 30% bituminous coal, 35% coke powder and 35% coking coal.With raw coal with grind into 150 orders after pitch mixes according to the above ratio, the water that adds corresponding weight then, after mixing and mediating certain hour, send into produce by Japan only device fabrication company, model is the feed granulating equipment of F-150, is under the condition of 6.0MPa at granulation pressure, by the rolling extruding of equipment pressure roller, shaped granule is extruded from the mould below, cut into the strip particle of length uniformity through cutting knife again, after charing, activation procedure obtain the finished product.

Embodiment 2:

A kind of manufacture method of columnar activated carbon, comprise feed coal is broken and wear into coal dust, add tackiness agent then and carry out coal blending, kneading, moulding, the molding device that adopts during moulding is that Japanese only device fabrication company produces, model is the feed granulating equipment of F-150, and granulation pressure is 6.0-8.0MPa; During coal blending, coal dust is 78%, and pitch is 8%, and water is 14%, and the temperature of coal dust is 30 ℃, and the temperature of water is 80 ℃; Used coal dust is made of 45% bituminous coal, 25% coke powder and 30% coking coal.With raw coal with grind into 200 orders after pitch mixes according to the above ratio, the water that adds corresponding weight then, after mixing and mediating certain hour, send into produce by Japan only device fabrication company, model is the feed granulating equipment of F-150, is under the condition of 8.0MPa at granulation pressure, by the rolling extruding of equipment pressure roller, shaped granule is extruded from the mould below, cut into the strip particle of length uniformity through cutting knife again, after charing, activation procedure obtain the finished product.

Embodiment 3:

A kind of manufacture method of columnar activated carbon, comprise feed coal is broken and wear into coal dust, add tackiness agent then and carry out coal blending, kneading, moulding, the molding device that adopts during moulding is that Japanese only device fabrication company produces, model is the feed granulating equipment of F-150, and granulation pressure is 6.0-8.0MPa; During coal blending, coal dust is 78%, and pitch is 10%, and water is 12%, and the temperature of coal dust is 25 ℃, and the temperature of water is 65 ℃; Used coal dust is made of 32% bituminous coal, 28% coke powder and 40% coking coal.With raw coal with grind into 165 orders after pitch mixes according to the above ratio, the water that adds corresponding weight then, after mixing and mediating certain hour, send into produce by Japan only device fabrication company, model is the feed granulating equipment of F-150, is under the condition of 7.0MPa at granulation pressure, by the rolling extruding of equipment pressure roller, shaped granule is extruded from the mould below, cut into the strip particle of length uniformity through cutting knife again, after charing, activation procedure obtain the finished product.

Embodiment 4:

A kind of manufacture method of columnar activated carbon, comprise feed coal is broken and wear into coal dust, add tackiness agent then and carry out coal blending, kneading, moulding, the molding device that adopts during moulding is that Japanese only device fabrication company produces, model is the feed granulating equipment of F-150, and granulation pressure is 6.0-8.0MPa; During coal blending, coal dust is 74%, and pitch is 8%, and water is 18%, and the temperature of coal dust is 28 ℃, and the temperature of water is 75 ℃; Used coal dust is made of 30% bituminous coal, 25% coke powder and 45% coking coal.With raw coal with grind into 180 orders after pitch mixes according to the above ratio, the water that adds corresponding weight then, after mixing and mediating certain hour, send into produce by Japan only device fabrication company, model is the feed granulating equipment of F-150, is under the condition of 7.5MPa at granulation pressure, by the rolling extruding of equipment pressure roller, shaped granule is extruded from the mould below, cut into the strip particle of length uniformity through cutting knife again, after charing, activation procedure obtain the finished product.

Claims (1)

1. the manufacture method of a columnar activated carbon, comprise feed coal is broken and wear into coal dust, add tackiness agent then and carry out coal blending, kneading, moulding, after charing, activation procedure, obtain the finished product, the molding device that adopts when it is characterized in that moulding is that Japanese only device fabrication company produces, model is the feed granulating equipment of F-150, and granulation pressure is 6.0-8.0MPa;

During coal blending, coal dust is 72-78%, and tackiness agent is 8-12%, and water is 12-18%, and the temperature of coal dust is 18-30 ℃, and the temperature of water is 50-80 ℃; Described tackiness agent is a pitch, and used coal dust is made of 30-45% bituminous coal, 25-35% coke powder and 30-45% coking coal.