CN1317186C - Process for preparing forming active carbod by biomess derived carbonaceous medium phase - Google Patents
Process for preparing forming active carbod by biomess derived carbonaceous medium phase Download PDFInfo
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- CN1317186C CN1317186C CNB2005101122223A CN200510112222A CN1317186C CN 1317186 C CN1317186 C CN 1317186C CN B2005101122223 A CNB2005101122223 A CN B2005101122223A CN 200510112222 A CN200510112222 A CN 200510112222A CN 1317186 C CN1317186 C CN 1317186C
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- carbonaceous mesophase
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Abstract
The present invention relates to a method for preparing and forming activated carbon by derivative biomess carbon mesophase, which belongs to the technical field of a material. The present invention uniformly mixes a derivative biomess carbon mesophase powder body and a lignocellulose substance powder body or powdered activated carbon mutually, and then, the mixed powder body is molded and compressed to be formed by a mold; a formed precursor with a designed shape is obtained. The formed precursor is further carbonized in a vacuum carbide furnace or a gas protection carbide furnace, and the formed activated carbon with given shape and dimension is obtained. A raw material adopted by the present invention is the derivative biomess carbon mesophase which is a new formed activated carbon preparation raw material. The derivative biomess carbon mesophase has good performance and self-bonding performance, self-sintering performance and simple preparation technology, and the formed activated carbon of the large size range from small size to large size is prepared and obtained.
Description
Technical field
What the present invention relates to is the method in a kind of material technology field, particularly a kind ofly prepares the moulding process of active carbon mutually by the biomass derived carbonaceous mesophase.
Background technology
Powdered Activated Carbon, because some defectives on its performance, its use is subjected to many limitations.And the moulding gac has bigger size and certain shape, and higher bulk density and intensity are arranged, and still has flourishing pore structure and specific surface area simultaneously.Compare with Powdered Activated Carbon, pressed active carbon is because its molding bonded technology, may cause that specific surface area has certain loss under its equal in quality, be that the unit mass adsorptive capacity is lower than Powdered Activated Carbon, yet owing to its density increases substantially, so the unit volume adsorptive capacity will be higher than Powdered Activated Carbon far away.In the storage transportation, the pressed active carbon that density large volume adsorptive capacity is high has advantage more.In addition, intensity that pressed active carbon possessed and workability more help satisfying the multiple use of different industries.
In the last few years, domestic and international many people adopted the whole bag of tricks to be prepared the research of pressed active carbon.Present preparation method roughly can be divided three classes: the first kind is directly will have the natural phant carbonization-activations such as timber of setting shape and size to obtain pressed active carbon; Second class is with carbonaceous precursor material molding bonded, carbonization-activation then with binding agent; The 3rd class is to adopt binding agent with powder active carbon or activated carbon fiber molding bonded, then carbonization-activation or directly obtain pressed active carbon.Wherein using more is second class and the 3rd class, and key wherein is the binding agent that is adopted.Interpreted in its broadest sense, ie, the component materials that plays the moulding effect is exactly a binding agent.The binding agent that obtains at present reporting has many types, mainly comprises thermosetting resin such as resol, natural polymer and derivative thereof such as carboxymethyl cellulose, lignin derivative, and oil, coal deutero-pitch and coal tar wet goods material.Because the use of binding agent in most of the cases can reduce the specific surface area of block absorbent charcoal, but gives block pressed active carbon shape and intensity, binding agent also has great effect to the preparation technology parameter and the price of pressed active carbon simultaneously.
Find through literature search prior art, publish in science periodical " Carbon " (carbon), n4,2002, article on the P2817-2825 " Activated carbon monoliths for methane storage:influence of the binder " (pressed active carbon that is used for storing methane: the impact effect of binding agent), introducing the technology prepare pressed active carbon up till now in this article mainly adopts absorbent charcoal powder body is mixed mold pressing afterwards with binding agent, and then the technical process of pyrolysis processing, and in text, adopted same preparation technology, compared different binding agents to the pressed active carbon Effect on Performance.The binding agent that is adopted has humic acid sodium salt, polyvinyl alcohol, linear phenolic resin, ptfe emulsion, cellulose-based binder.The kind of binding agent and consumption have great effect to the pore structure of product.If obtain having the pressed active carbon of high-specific surface area, need reduce the binding agent consumption as far as possible.
Summary of the invention
The objective of the invention is at the problem in the background technology, provide a kind of and prepare the moulding process of active carbon mutually by the biomass derived carbonaceous mesophase, make its good self-adhesive that utilizes biomass derived carbonaceous mesophase phase and carbonization characteristic, obtain the pressed active carbon of high comprehensive performance, compare with traditional pressed active carbon preparation method, the raw material that the present invention adopts is special, does not add extra binding agent, moulding process is simple, high comprehensive performance.
The present invention is achieved by the following technical solutions; the present invention mixes biomass derived carbonaceous mesophase phase powder and lignocellulose material or powdered carbon mutually; adopt suitable mould the mixed powder compression molding to be obtained the moulding presoma of design shape then as required; further, obtain setting the pressed active carbon of shape and size with the carbonization in vacuum carburization stove or atmosphere protection carbide furnace of this moulding presoma.
Described biomass derived carbonaceous mesophase phase, its state is a powder, size range is 3 microns-1 centimetre.
Described lignocellulose material, its kind is unrestricted, comprises various materials such as timber, stalk, apple residue, chaff, flour.Its form is a powder, and size range is 5 microns-1 centimetre.
Described powdered carbon, its size range are 5 microns-1 centimetre.
Described biomass derived carbonaceous mesophase phase powder mixes mutually with lignocellulose material or powdered carbon, and the part by weight scope is 10: 1 to 1: 5.
Described pressed active carbon, the carbonization temperature scope of employing is the 600-900 degree, is 30 minutes-9 hours in the following hold-time of carbonization temperature.
The present invention has substantive distinguishing features and marked improvement, compare with performance with the manufacture method of traditional pressed active carbon, the starting material that the present invention adopts are biomass derived carbonaceous mesophase phases, are that a kind of pressed active carbon prepares starting material, its excellent property has self-adhesive and self sintering simultaneously; Preparation technology is very simple, includes only raw material mixing, moulding and three steps of carbonization, need not activation; Can prepare the pressed active carbon of small size to the large size larger size range.The present invention is a kind of application to biomass derived carbonaceous mesophase phase.
Embodiment
Content in conjunction with the inventive method further provides following examples:
Embodiment one:
Biomass derived carbonaceous mesophase phase powder 10 grams that are of a size of the 3-20 micron are even with the mutual mix of maize straw powder 1 gram that is of a size of the 5-20 micron, obtain cylindric presoma block with the compression molding of circle mould then, the diameter of cylindrical piece is 3 centimetres, highly is 2.5 centimetres.With cylindric presoma piece in the vacuum carburization stove in 600 degree carbonizations 2 hours, obtaining diameter is 2 centimetres, highly is 1.5 centimetres cylindrical pressed active carbon, its ultimate compression strength reaches 6.1MPa, specific surface area reaches 350 meters squared per gram.
Embodiment two:
Biomass derived carbonaceous mesophase phase powder 50 grams that are of a size of 0.1-1 centimetre were mixed the back ball milling 4 hours with wood chip powder 25 grams that are of a size of 0.1-1 centimetre, obtain rectangle presoma block with the square dies compression molding then, the length of rectangle block is respectively 10 centimetres, 8 centimetres and 1.5 centimetres.Rectangular parallelepiped presoma piece is spent carbonizations 4 hours in 900 in the nitrogen protection High Temperature Furnaces Heating Apparatus; obtain the rectangular parallelepiped pressed active carbon that length is respectively 6.5 centimetres, 5.2 centimetres and 1.2 centimetres; its ultimate compression strength reaches 13MPa, and specific surface area reaches 550 meters squared per gram.
Embodiment three:
Biomass derived carbonaceous mesophase phase powder 20 grams that are of a size of the 50-200 micron were mixed the back ball milling 2 hours with apple residue powder 100 grams that are of a size of the 20-100 micron, obtain square presoma block with square mould compression molding then, the length of square block is respectively 10 centimetres, 10 centimetres and 2 centimetres.With square presoma piece in ammonia destruction furnace in 800 degree carbonizations 6 hours, obtain the positive square pressed active carbon that length is respectively 6.5 centimetres, 6.4 centimetres and 1.5 centimetres, its ultimate compression strength reaches 9MPa, specific surface area reaches 820 meters squared per gram.
Embodiment four:
Biomass derived carbonaceous mesophase phase powder 30 grams that are of a size of the 100-200 micron were mixed the back ball milling 2 hours with absorbent charcoal powder body 30 grams that are of a size of the 5-20 micron, obtain cylindrical presoma block with the cylindrical die compression molding then, the diameter of this block is 10 centimetres, highly is 1.5 centimetres.With cylindrical presoma piece in vacuum oven in 700 degree carbonizations 4 hours, obtaining diameter is 6 centimetres, highly is 1 centimetre discoid pressed active carbon, its ultimate compression strength reaches 12MPa, specific surface area reaches 940 meters squared per gram.
Embodiment five:
Biomass derived carbonaceous mesophase phase powder 1000 grams that are of a size of the 20-100 micron were mixed the back ball milling 3 hours with absorbent charcoal powder body 300 grams that are of a size of 0.2-1.0 centimetre, obtain cylindrical presoma block with the cylindrical die compression molding then, the diameter of this block is 40 centimetres, highly is 30 centimetres.With cylindrical presoma piece in vacuum oven in 800 degree carbonizations 9 hours, obtaining diameter is 25 centimetres, highly is 20 centimetres cylindrical shape pressed active carbon, its ultimate compression strength reaches 18MPa, specific surface area reaches 550 meters squared per gram.
Embodiment six:
Biomass derived carbonaceous mesophase phase powder 50 grams that are of a size of the 20-100 micron are mixed with the absorbent charcoal powder body 25 gram mixs that are of a size of the 100-200 micron, obtain cylindrical presoma block with the cylindrical die compression molding then, the diameter of this block is 8 centimetres, highly is 5 centimetres.With cylindrical presoma piece in vacuum oven in 700 degree carbonizations 2 hours, obtaining diameter is 4.6 centimetres, highly is 12.2 centimetres cylindrical shape pressed active carbon, its ultimate compression strength reaches 13MPa, specific surface area reaches 760 meters squared per gram.
Embodiment seven:
Biomass derived carbonaceous mesophase phase powder 20 grams that are of a size of the 20-100 micron are mixed with the absorbent charcoal powder body 20 gram mixs that are of a size of the 150-200 micron, obtain square presoma block with square mould compression molding then, the length of this block is respectively 8 centimetres, 8 centimetres, 2 centimetres.Square presoma piece is spent carbonizations 2 hours in 800 in the heat treatment furnace of argon gas atmosphere protection; obtain the square pressed active carbon that length is respectively 4.5 centimetres, 4.5 centimetres, 1.3 centimetres; its ultimate compression strength reaches 8MPa, and specific surface area reaches 585 meters squared per gram.
Claims (6)
1, a kind ofly prepares the moulding process of active carbon mutually by the biomass derived carbonaceous mesophase; it is characterized in that; biomass derived carbonaceous mesophase phase powder and lignocellulose material or powdered carbon are mixed mutually; adopt mould the mixed powder compression molding to be obtained the moulding presoma of design shape then; further, obtain setting the pressed active carbon of shape and size with the carbonization in vacuum carburization stove or atmosphere protection carbide furnace of this moulding presoma.
2, according to claim 1ly prepare the moulding process of active carbon mutually, it is characterized in that by the biomass derived carbonaceous mesophase, described biomass derived carbonaceous mesophase phase powder, size range is 3 microns-1 centimetre.
3, according to claim 1ly prepare the moulding process of active carbon mutually, it is characterized in that by the biomass derived carbonaceous mesophase, described lignocellulose material, its form is a powder, size range is 5 microns-1 centimetre.
4, according to claim 1ly prepare the moulding process of active carbon mutually, it is characterized in that by the biomass derived carbonaceous mesophase, described powdered carbon, its size range is 5 microns-1 centimetre.
5, describedly prepare the moulding process of active carbon mutually according to claim 1 or 2 by the biomass derived carbonaceous mesophase, it is characterized in that, described biomass derived carbonaceous mesophase phase powder, it mixes mutually with lignocellulose material or powdered carbon, and the part by weight scope is 10: 1 to 1: 5.
6, according to claim 1ly prepare the moulding process of active carbon mutually, it is characterized in that by the biomass derived carbonaceous mesophase, described pressed active carbon, the carbonization temperature scope of employing is the 600-900 degree, is 30 minutes-9 hours in the following hold-time of carbonization temperature.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100402422C (en) * | 2006-09-04 | 2008-07-16 | 江苏工业学院 | Method capable of reducing energy consumption of reaction for preparing super active carbon |
| CN102807210B (en) * | 2012-08-20 | 2014-06-25 | 上海交通大学 | Method for preparing graphene by biomass derived carbonaceous mesophase |
| CN103451777B (en) * | 2013-09-10 | 2015-06-17 | 北京梦狐宇通竹纤维研究开发中心 | Process method for preparing intermediate phase lignin and carbon fibers thereof |
| CN103754870B (en) * | 2014-01-21 | 2016-04-27 | 中国石油大学(华东) | One step activation method prepares the method for coke-based pressed active carbon |
| CN104923162A (en) * | 2015-07-13 | 2015-09-23 | 长沙深橙生物科技有限公司 | Molded active carbon free from bonding |
| CN111087068B (en) * | 2019-12-24 | 2022-03-29 | 南京公诚节能新材料研究院有限公司 | Preparation method of biological filter material for water purification treatment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1245776A (en) * | 1999-08-31 | 2000-03-01 | 林天安 | Method for preparing vehicular active carbon by using straw stalks and saw dust |
| CN1421447A (en) * | 2001-11-27 | 2003-06-04 | 陶氏康宁公司 | Improved process for producing organic silicane |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1245776A (en) * | 1999-08-31 | 2000-03-01 | 林天安 | Method for preparing vehicular active carbon by using straw stalks and saw dust |
| CN1421447A (en) * | 2001-11-27 | 2003-06-04 | 陶氏康宁公司 | Improved process for producing organic silicane |
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Effective date of registration: 20160725 Address after: 273100 west side of Railway Station Road, Qufu Economic Development Zone, Shandong, Jining province (Lu Cheng) Patentee after: Qufu Tian Bojing carbon Science and Technology Ltd. Address before: 200240 Dongchuan Road, Shanghai, No. 800, No. Patentee before: Shanghai Jiao Tong University |
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Effective date of registration: 20220402 Address after: 272114 No. 8 Anyang Road, Da'an Town, Yanzhou District, Jining City, Shandong Province Patentee after: Shandong Qingsu environmental protection material Co.,Ltd. Address before: 273100 west side of Railway Station Road, Qufu Economic Development Zone, Jining City, Shandong Province (Lucheng) Patentee before: Qufu Tianbo Crystallized Carbon Technology Co.,Ltd. |
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