CN109574009A - The preparation process of low ammonia residual protection activity charcoal - Google Patents
The preparation process of low ammonia residual protection activity charcoal Download PDFInfo
- Publication number
- CN109574009A CN109574009A CN201811547617.XA CN201811547617A CN109574009A CN 109574009 A CN109574009 A CN 109574009A CN 201811547617 A CN201811547617 A CN 201811547617A CN 109574009 A CN109574009 A CN 109574009A
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- Prior art keywords
- mixed liquor
- preparation process
- low ammonia
- charcoal
- protection activity
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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
- C01B32/354—After-treatment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
This application discloses a kind of preparation processes of low ammonia residual protection activity charcoal.The preparation process of the low ammonia residual protection activity charcoal, the specific steps of which are as follows: (1), picking of raw material；(2), the first mixed liquor is prepared；(3), the second mixed liquor is prepared；(4), it impregnates；(5), it dries；(6), third mixed liquor is prepared；(7) double-steeping；(8), secondary drying；(9), deamination is handled.The preparation process active carbon obtained for civil air defense constructions and installations of the low ammonia residual protection activity charcoal is high with intensity, adsorption capacity is strong, adsorption capacity is big, ash content is few, the rate of adsorption is fast, appearance is without obvious crackle；There is very good effect in industrial waste gas processing, protection of toxic and harmful gas etc., there is excellent absorption property not available for conventional granulates charcoal especially for benzene, hydrogen cyanide, the chloroethanes etc. in exhaust gas；The addition of heavy metal, more conducively energy conservation and environmental protection are avoided simultaneously.
Description
Technical field
The present invention relates to purification air field activity charcoal technical fields, remain protection activity more particularly to a kind of low ammonia
The preparation process of charcoal.
Background technique
Active carbon is applied in many fields, especially now as a kind of very outstanding filter medium
It is in environment protection field, the effect of purification air field activity charcoal is most important, becomes current leading role；Prior art side
Product causes have ammonia residual in finished product mostly using ammonia as solvent in case, while irritation gas is also easy to produce under hot and humid environment
Taste causes user to have any problem in use.
Summary of the invention
The purpose of the present invention is to provide a kind of preparation processes of low ammonia residual protection activity charcoal, to overcome the prior art
In deficiency.
To achieve the above object, the invention provides the following technical scheme:
The embodiment of the present application discloses a kind of preparation process of low ammonia residual protection activity charcoal, the specific steps of which are as follows:
(1), picking of raw material: selecting active carbon of the water capacity not less than 80% is base charcoal；(2), the first mixed liquor is prepared: by copper sulphate
Or zinc chloride is added in the mixed liquor of ammonium hydroxide and water, obtains the first mixed liquor；(3), it prepares the second mixed liquor: sodium carbonate is dissolved in
In water, the second mixed liquor is obtained；(4), it impregnates: base charcoal being impregnated in first mixed liquor, and is fitted into hermetic bag and seals；
(5), it dries: the base charcoal after first mixed liquor will be impregnated in and dried to obtain semi-finished product；(6), third mixing is prepared
Liquid: the first and second mixed liquors are proportionally uniformly mixed to get third mixed liquor；(7) double-steeping: semi-finished product are soaked
Stain is fitted into hermetic bag and seals in the third mixed liquor；(8), secondary drying: the base charcoal after double-steeping is dried, is obtained
Finished product；(9), deamination is handled: finished product being passed through steam and carries out deamination processing.
Preferably, in the preparation process of above-mentioned low ammonia residual protection activity charcoal, the moisture of base charcoal described in step (1)
Content is not more than 3%, and intensity is not less than 85%, is not less than 45min to benzene vapour guard time.
Preferably, in the preparation process of above-mentioned low ammonia residual protection activity charcoal, in step (2) acid cleaning process, step
(2) ratio of ammonium hydroxide described in and water is 3:1, and is heated to 30-50 DEG C under agitation, copper sulphate or zinc chloride
Quality is the 10% of the mixed liquor of ammonium hydroxide and water, after copper sulphate or zinc chloride are dissolved in the mixed liquor of ammonium hydroxide and water, heat preservation
20min, and it is heated to 70 DEG C.
Preferably, in the preparation process of above-mentioned low ammonia residual protection activity charcoal, the quality of sodium carbonate is in step (3)
3% base charcoal, and mixed according to the ratio that the sodium carbonate of every 30g is dissolved in the water of 500ml.
Preferably, in the preparation process of above-mentioned low ammonia residual protection activity charcoal, the first mixed liquor described in step (4)
Additive amount be equal to the water capacity of base charcoal and subtract the moisture content of base charcoal.
Preferably, in the preparation process of above-mentioned low ammonia residual protection activity charcoal, in step (5), when drying in-furnace temperature
When reaching 100-150 DEG C, addition is impregnated in the base charcoal after first mixed liquor, and the air outlet temperature of furnace to be dried reaches 125
After ± 5 DEG C or more, it is further continued for reaction 30-50min, and temperature is controlled at 130 ± 5 DEG C.
Preferably, in the preparation process of above-mentioned low ammonia residual protection activity charcoal, the first mixed liquor described in step (6)
It is 3:1 with the ratio of the second mixed liquor, the temperature of third mixed liquor described in process for preparation is maintained at 40-60 DEG C, and described the
The standing time of three mixed liquors must not exceed 12h.
Preferably, in the preparation process of above-mentioned low ammonia residual protection activity charcoal, step is impregnated in the third in (7)
Semi-finished product after mixed liquor are fitted into the time sealed in hermetic bag not less than 8h.
Preferably, in the preparation process of above-mentioned low ammonia residual protection activity charcoal, in step (8), when warm in drying oven
When degree reaches 60 DEG C, the semi-finished product for absorbing and having the third mixed liquor are added, the semi-finished product continue at a temperature of 90 ± 5 DEG C
React 30-50min.
Compared with the prior art, the advantages of the present invention are as follows: made from the preparation process of the low ammonia residual protection activity charcoal
Active carbon for civil air defense constructions and installations has that intensity is high, adsorption capacity is strong, adsorption capacity is big, ash content is few, the rate of adsorption is fast, appearance
Without obvious crackle；There is very good effect in industrial waste gas processing, protection of toxic and harmful gas etc., especially for
Benzene, hydrogen cyanide, chloroethanes in exhaust gas etc. have excellent absorption property not available for conventional granulates charcoal；Weight is avoided simultaneously
The addition of metal, more conducively energy conservation and environmental protection.
Specific embodiment
The present invention is described further by the following example: according to following embodiments, this hair may be better understood
It is bright.However, as it will be easily appreciated by one skilled in the art that specific material ratio, process conditions and its result described in embodiment
It is merely to illustrate the present invention, without the present invention described in detail in claims should will not be limited.
Embodiment
The preparation process of the residual protection activity charcoal of low ammonia described in the specific embodiment of the invention the following steps are included: (1),
Picking of raw material: selecting active carbon for base charcoal, and the active carbon as base charcoal requires water capacity to be not less than 80%, and moisture content is little
In 3%, intensity is not less than 85%, is not less than 45min to benzene vapour guard time, accurately calculates in dipping, is reaching absorption
Waste is not will cause while performance；(2), prepare the first mixed liquor: water intaking and ammonium hydroxide, the two are 1:3 mixing in proportion,
It is heated to 30-50 DEG C under stirring state, 10% copper sulphate is added in the mixed liquor of water and ammonium hydroxide, keeps the temperature 20min, finally
It is heated to 70 DEG C；(3), the second mixed liquor is prepared: by the sodium carbonate of base charcoal 3% according to being put into 30g sodium carbonate in 500ml water
Ratio is soluble in water, obtains the second mixed liquor；(4), it impregnates: base charcoal being impregnated in the first mixed liquor, the first mixed liquor is according to activity
The water capacity (%) of charcoal=the+the first mixed liquor additive amount of active carbon moisture (%) percentage (%) is added, and is stirred rapidly
It mixes, then the active carbon for having the first mixed liquor will be absorbed and is fitted into polybag sealing for use；(5), it dries: when drying in-furnace temperature
When reaching 100-150 DEG C, being added to absorb has the base charcoal after the first mixed liquor, and the air outlet temperature of furnace to be dried reaches 125 ± 5
DEG C or more after, be further continued for reaction 50min, and by temperature control at 130 ± 5 DEG C, obtain semi-finished product；(6), third mixing is prepared
Liquid: being mixed to get third mixed liquor according to the ratio uniform of 3:1 for the first and second mixed liquors, and third mixes in process for preparation
The temperature of liquid is maintained at 40-60 DEG C, and the standing time of third mixed liquor must not exceed 12h；(7) double-steeping: semi-finished product are soaked
Stain will absorb the semi-finished product for having third mixed liquor and be fitted into sealing placement 8h or more in hermetic bag in the third mixed liquor, it is ensured that
Absorption completely；(8), it secondary drying: when drying in-furnace temperature reaches 60 DEG C, is added and absorbs have the third mixed liquor half
Finished product, semi-finished product the reaction was continued at a temperature of 90 ± 5 DEG C 50min, obtains finished product；(9), deamination is handled: after secondary drying
After finished product cooling, it is passed through steam, and material is made sufficiently to roll, guarantees that material and steam come into full contact with, by the residual ammonia in material
Removal.
The sodium bicarbonate produced in third mixed liquor loads agent as first as the first load agent, the second mixed liquor,
First load agent sodium bicarbonate plays in weak base and under the premise of the effect of sour gas, and the second load agent sodium carbonate continues to mention
Protective performance is risen, product guard time, protection effect is made to be significantly improved, it, more completely will load by impregnating twice
Agent is carried on base charcoal, and drying is dried using gradient temperature twice, there is heat preservation and temperature gradients process, the product for coming out drying
Stay in grade, finally, remaining ammonia in removal product, the product is under high humidity hot conditions, without penetrating odor.
In conclusion the preparation process active carbon obtained for civil air defense constructions and installations of the low ammonia residual protection activity charcoal has
Have that intensity is high, adsorption capacity is strong, adsorption capacity is big, ash content is few, the rate of adsorption is fast, appearance is without obvious crackle；At industrial waste gas
Reason, protection of toxic and harmful gas etc. have very good effect, especially for benzene, hydrogen cyanide, the chloroethanes in exhaust gas
Deng with excellent absorption property not available for conventional granulates charcoal；The addition of heavy metal, more conducively energy-saving ring are avoided simultaneously
It protects.
Here, it should also be noted that, in order to avoid having obscured the present invention because of unnecessary details, in embodiment
Illustrate only with closely related structure and/or processing step according to the solution of the present invention, and be omitted and relationship of the present invention
Little other details.
Finally, it is to be noted that, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or equipment for including a series of elements not only includes those elements, and
It and further include other elements that are not explicitly listed, or further include solid by this process, method, article or equipment
Some elements.
Claims (9)
1. a kind of preparation process of low ammonia residual protection activity charcoal, it is characterised in that specific step is as follows: (1), picking of raw material: choosing
Selecting active carbon of the water capacity not less than 80% is base charcoal；(2), it prepares the first mixed liquor: ammonium hydroxide is added in copper sulphate or zinc chloride
In the mixed liquor of water, the first mixed liquor is obtained；(3), the second mixed liquor is prepared: sodium carbonate is soluble in water, obtain the second mixed liquor；
(4), it impregnates: base charcoal being impregnated in first mixed liquor, and is fitted into hermetic bag and seals；(5), it dries: will be impregnated in described
Base charcoal after first mixed liquor is dried to obtain semi-finished product；(6), it prepares third mixed liquor: the first and second mixed liquors is pressed
Third mixed liquor is mixed to get according to ratio uniform；(7) double-steeping: semi-finished product are impregnated in the third mixed liquor, and are packed into
It is sealed in hermetic bag；(8), secondary drying: the base charcoal after double-steeping is dried, finished product is obtained；(9), deamination is handled: finished product is led to
Enter steam and carries out deamination processing.
2. the preparation process of low ammonia residual protection activity charcoal according to claim 1, it is characterised in that: institute in step (1)
The moisture content of base charcoal is stated no more than 3%, intensity is not less than 85%, is not less than 45min to benzene vapour guard time.
3. the preparation process of low ammonia residual protection activity charcoal according to claim 1, it is characterised in that: institute in step (2)
The ratio for stating ammonium hydroxide and water is 3:1, and is heated to 30-50 DEG C under agitation, and the quality of copper sulphate or zinc chloride is ammonia
After the 10% of the mixed liquor of water and water, copper sulphate or zinc chloride are dissolved in the mixed liquor of ammonium hydroxide and water, 20min is kept the temperature, and heat
To 70 DEG C.
4. the preparation process of low ammonia residual protection activity charcoal according to claim 1, it is characterised in that: carbon in step (3)
The base charcoal that the quality of sour sodium is 3%, and mixed according to the ratio that the sodium carbonate of every 30g is dissolved in the water of 500ml.
5. the preparation process of low ammonia residual protection activity charcoal according to claim 1, it is characterised in that: institute in step (4)
The additive amount for stating the first mixed liquor subtracts the moisture content of base charcoal equal to the water capacity of base charcoal.
6. the preparation process of low ammonia residual protection activity charcoal according to claim 5, it is characterised in that: in step (5), when
When drying in-furnace temperature reaches 100-150 DEG C, addition is impregnated in the base charcoal after first mixed liquor, the air outlet of furnace to be dried
After temperature reaches 125 ± 5 DEG C or more, it is further continued for reaction 30-50min, and temperature is controlled at 130 ± 5 DEG C.
7. the preparation process of low ammonia residual protection activity charcoal according to claim 1, it is characterised in that: institute in step (6)
The ratio for stating the first mixed liquor and the second mixed liquor is 3:1, and the temperature of third mixed liquor described in process for preparation is maintained at 40-
60 DEG C, the standing time of the third mixed liquor must not exceed 12h.
8. the preparation process of low ammonia residual protection activity charcoal according to claim 1, it is characterised in that: leaching in step (7)
Semi-finished product of the stain after the third mixed liquor are fitted into the time sealed in hermetic bag not less than 8h.
9. the preparation process of low ammonia residual protection activity charcoal according to claim 1, it is characterised in that: in step (8),
When drying in-furnace temperature reaches 60 DEG C, the semi-finished product for absorbing and having the third mixed liquor are added, the semi-finished product are at 90 ± 5 DEG C
At a temperature of the reaction was continued 30-50min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811547617.XA CN109574009A (en) | 2018-12-18 | 2018-12-18 | The preparation process of low ammonia residual protection activity charcoal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811547617.XA CN109574009A (en) | 2018-12-18 | 2018-12-18 | The preparation process of low ammonia residual protection activity charcoal |
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| Publication Number | Publication Date |
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| CN109574009A true CN109574009A (en) | 2019-04-05 |
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ID=65929807
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811547617.XA Pending CN109574009A (en) | 2018-12-18 | 2018-12-18 | The preparation process of low ammonia residual protection activity charcoal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111646470A (en) * | 2020-06-17 | 2020-09-11 | 宁夏浦士达环保科技有限公司 | Ammonia-free acid gas-resistant activated carbon and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111646470A (en) * | 2020-06-17 | 2020-09-11 | 宁夏浦士达环保科技有限公司 | Ammonia-free acid gas-resistant activated carbon and preparation method thereof |
| CN111646470B (en) * | 2020-06-17 | 2023-10-20 | 宁夏浦士达环保科技有限公司 | Ammonia-free acid gas prevention active carbon and preparation method thereof |
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Application publication date: 20190405 |