CN110156008A - Phosphoric acid permeating method in phosphoric acid method wood activated charcoal production process - Google Patents
Phosphoric acid permeating method in phosphoric acid method wood activated charcoal production process Download PDFInfo
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- CN110156008A CN110156008A CN201910595096.3A CN201910595096A CN110156008A CN 110156008 A CN110156008 A CN 110156008A CN 201910595096 A CN201910595096 A CN 201910595096A CN 110156008 A CN110156008 A CN 110156008A
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- phosphoric acid
- sawdust
- production process
- activated charcoal
- wood activated
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/318—Preparation characterised by the starting materials
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/342—Preparation characterised by non-gaseous activating agents
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Carbon And Carbon Compounds (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses the phosphoric acid permeating methods in phosphoric acid method wood activated charcoal production process, belong to active carbon field；Phosphoric acid permeating method in phosphoric acid method wood activated charcoal production process, comprising the following steps: S1: phosphoric acid and sawdust are taken according to the proportion that phosphoric acid and sawdust butt (removing water) mass ratio are 4:1-5.5:1；S2: phosphoric acid is configured to the phosphoric acid solution that mass fraction is 55%-80%, is heated to 60-80 °C；S3: phosphoric acid solution is sprayed into the mixing arrangement equipped with sawdust, stirs evenly, obtains mixture, mixture is kept the temperature by mixing arrangement；S4: mixture in step 3 being sent into slow-speed of revolution continuous centrifugal machine and is centrifuged with 100-300 revs/min of revolving speed, obtains considering to be worth doing containing sourwood；The present invention improves depth and the uniformity that phosphoric acid penetrates into sawdust by impregnating the phosphoric acid solution of high concentration after heating to sawdust.
Description
Technical field
The present invention relates to the phosphoric acid infiltrations in technical field of active carbon more particularly to phosphoric acid method wood activated charcoal production process
Method.
Background technique
Active carbon has a flourishing pore structure, huge specific surface area, purification, separation, purification and carrier, recycling,
The fields such as precious metal refineries have a wide range of applications；The method of production wood activated charcoal is mainly chemical method, including zinc chloride is lived
Change method, phosphoric acid activation method, activation of potassium hydroxide method and other chemicals activation method, what is be commonly used at present is phosphoric acid activation method.
In the production of phosphoric acid method wood activated charcoal, determine that one of most important process of activated carbon adsorptive capacity is exactly phosphoric acid infiltration
To the quality of sawdust inside configuration；If phosphoric acid penetrates into, sawdust is uniformly full and controllable, and the active carbon after the techniques such as activated is inhaled
Attached ability is just very strong, and product quality is with regard to fine.
Phosphoric acid infiltration in phosphoric acid method wood activated charcoal production process at present, using sawdust after drying, is directly added into through counting
After calculating a certain amount of phosphoric acid of a certain concentration needed, after remixing uniformly, it is directly entered activation procedure；Phosphoric acid is caused to penetrate into sawdust
Unevenly not deeply, activated carbon adsorptive capacity, which does not perform to generally, should level.
Summary of the invention
The purpose of the present invention is to solve the problems of the prior art, and the phosphoric acid method wood activated charcoal proposed produced
Phosphoric acid permeating method in journey.
To achieve the goals above, present invention employs following technical solutions:
Phosphoric acid permeating method in phosphoric acid method wood activated charcoal production process, comprising the following steps:
S1: according to phosphoric acid and sawdust butt quality than taking phosphoric acid and sawdust for the proportion of 4:1-5.5:1；
S2: phosphoric acid is configured to the phosphoric acid solution that mass fraction is 55%-80%, is heated to 60-80 °C；
S3: phosphoric acid solution is sprayed into the mixing arrangement equipped with sawdust, stirs evenly, obtains mixture, pass through mixing arrangement pair
Mixture is kept the temperature；
S4: mixture in step 3 is sent into slow-speed of revolution continuous centrifugal machine, centrifugation point is carried out with 100-300 revs/min of revolving speed
From, obtain containing sourwood consider to be worth doing.
Preferably, the phosphoric acid solution that centrifuge described in step 4 is centrifugated out is sent into concentration systems, and reuse is concentrated.
It preferably, is 1.5:1-2.5:1 containing phosphoric acid in sourwood bits and sawdust butt quality ratio described in step 4.
Preferably, mixing arrangement soaking time described in step 3 is 2-3h.
Compared with prior art, the present invention provides the phosphoric acid permeating method in phosphoric acid method wood activated charcoal production process,
Have it is following the utility model has the advantages that
The present invention impregnates sawdust by using the phosphoric acid solution of more times of amounts of the actual requirement after heating, and then guarantees
Phosphoric acid improves depth and uniformity that phosphoric acid penetrates into butt sawdust to the fully penetrated of sawdust, and then improves containing sourwood bits activation
Etc. the activated carbon adsorptive capacity for preparing after techniques, the phosphoric acid solution separated after centrifugation, or new phosphoric acid or partial concentration is added
It improves concentration and gives reuse, adjustment proportion is to after needing concentration, then is back to next immersion process, improves the level of resources utilization.
Detailed description of the invention
Fig. 1 is the flow chart element of the phosphoric acid permeating method in phosphoric acid method wood activated charcoal production process proposed by the present invention
Figure.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", "top",
The orientation or positional relationship of the instructions such as "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, merely to just
In description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with
Specific orientation construction and operation, therefore be not considered as limiting the invention.
Embodiment 1:
Referring to Fig.1, the phosphoric acid permeating method in phosphoric acid method wood activated charcoal production process, comprising the following steps:
S1: according to phosphoric acid and sawdust butt quality than taking phosphoric acid and sawdust for the proportion of 4:1；
S2: phosphoric acid is configured to the phosphoric acid solution that mass fraction is 55%, is heated to 70 °C；
S3: phosphoric acid solution is sprayed into the mixing arrangement equipped with sawdust, stirs evenly, obtains mixture, pass through mixing arrangement pair
Mixture is kept the temperature, and 2h is kept the temperature；
S4: mixture in step 3 being sent into slow-speed of revolution continuous centrifugal machine and is centrifuged with 200 revs/min of revolving speed,
Obtaining is 1.6:1 containing phosphoric acid in sourwood bits and butt sawdust mass ratio, and the phosphoric acid solution that centrifuge is centrifugated out is sent into dense
Reuse is concentrated in compression system.
Embodiment 2:
The present embodiment and the difference of embodiment 1 are only that: according to phosphoric acid and sawdust butt quality than taking phosphorus for the proportion of 5.5:1
Phosphoric acid is configured to the phosphoric acid solution that mass fraction is 80% by acid and sawdust, and what is obtained contains phosphoric acid and sawdust butt matter in sourwood bits
Amount is than being 2.2:1.
Embodiment 3:
The present embodiment and the difference of embodiment 1 are only that: in slow-speed of revolution continuous centrifugal machine with 300 revs/min of revolving speed carry out from
Heart separation, obtaining is less than 1.6 containing phosphoric acid in sourwood bits and sawdust butt quality ratio.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (4)
1. the phosphoric acid permeating method in phosphoric acid method wood activated charcoal production process, which comprises the following steps:
S1: phosphoric acid and sawdust are taken according to the proportion that phosphoric acid and sawdust butt (removing water) mass ratio are 4:1-5.5:1；
S2: phosphoric acid is configured to the phosphoric acid solution that mass fraction is 55%-80%, is heated to 60-80 °C；
S3: phosphoric acid solution is sprayed into the mixing arrangement equipped with sawdust, stirs evenly, obtains mixture, pass through mixing arrangement pair
Mixture is kept the temperature；
S4: mixture in step 3 is sent into slow-speed of revolution continuous centrifugal machine, centrifugation point is carried out with 100-300 revs/min of revolving speed
From, obtain containing sourwood consider to be worth doing.
2. the phosphoric acid permeating method in phosphoric acid method wood activated charcoal production process according to claim 1, which is characterized in that
The phosphoric acid solution that centrifuge described in step 4 is centrifugated out is sent into concentration systems, and reuse is concentrated.
3. the phosphoric acid permeating method in phosphoric acid method wood activated charcoal production process according to claim 2, which is characterized in that
Containing phosphoric acid and sawdust butt quality ratio in sourwood bits described in step 4 is 1.5:1-2.5:1.
4. the phosphoric acid permeating method in phosphoric acid method wood activated charcoal production process according to claim 1-3,
It is characterized in that, mixing arrangement soaking time described in step 3 is 2-3h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910595096.3A CN110156008A (en) | 2019-07-03 | 2019-07-03 | Phosphoric acid permeating method in phosphoric acid method wood activated charcoal production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910595096.3A CN110156008A (en) | 2019-07-03 | 2019-07-03 | Phosphoric acid permeating method in phosphoric acid method wood activated charcoal production process |
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| CN110156008A true CN110156008A (en) | 2019-08-23 |
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| CN201910595096.3A Pending CN110156008A (en) | 2019-07-03 | 2019-07-03 | Phosphoric acid permeating method in phosphoric acid method wood activated charcoal production process |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101391766A (en) * | 2008-10-21 | 2009-03-25 | 广西大学 | Method for preparing activated carbon from pulp and paper mill sludge |
| CN102153082A (en) * | 2011-04-25 | 2011-08-17 | 福建省将乐县乐洪活性炭有限公司 | Method for preparing wood activated carbon by phosphoric acid method |
| CN102786051A (en) * | 2012-07-16 | 2012-11-21 | 太仓市联林活性炭厂 | Method for preparing active carbon by low temperature pretreating with phosphoric acid |
| US20130190542A1 (en) * | 2006-11-08 | 2013-07-25 | The Curators Of The University Of Missouri | High surface area carbon and process for its production |
| CN106629718A (en) * | 2016-12-22 | 2017-05-10 | 桂东县湘浙活性炭有限公司 | Process of producing wood activated carbon by low phosphorylation method |
| CN109796015A (en) * | 2019-02-21 | 2019-05-24 | 浙江省林业科学研究院 | The continuous automatic blending mixing apparatus of sawdust and phosphoric acid solution |
-
2019
- 2019-07-03 CN CN201910595096.3A patent/CN110156008A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130190542A1 (en) * | 2006-11-08 | 2013-07-25 | The Curators Of The University Of Missouri | High surface area carbon and process for its production |
| CN101391766A (en) * | 2008-10-21 | 2009-03-25 | 广西大学 | Method for preparing activated carbon from pulp and paper mill sludge |
| CN102153082A (en) * | 2011-04-25 | 2011-08-17 | 福建省将乐县乐洪活性炭有限公司 | Method for preparing wood activated carbon by phosphoric acid method |
| CN102786051A (en) * | 2012-07-16 | 2012-11-21 | 太仓市联林活性炭厂 | Method for preparing active carbon by low temperature pretreating with phosphoric acid |
| CN106629718A (en) * | 2016-12-22 | 2017-05-10 | 桂东县湘浙活性炭有限公司 | Process of producing wood activated carbon by low phosphorylation method |
| CN109796015A (en) * | 2019-02-21 | 2019-05-24 | 浙江省林业科学研究院 | The continuous automatic blending mixing apparatus of sawdust and phosphoric acid solution |
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Application publication date: 20190823 |
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