CN107970888A - The preparation process of modified high-efficient acid-resistance gas active charcoal - Google Patents
The preparation process of modified high-efficient acid-resistance gas active charcoal Download PDFInfo
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- CN107970888A CN107970888A CN201711194499.4A CN201711194499A CN107970888A CN 107970888 A CN107970888 A CN 107970888A CN 201711194499 A CN201711194499 A CN 201711194499A CN 107970888 A CN107970888 A CN 107970888A
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- 239000003610 charcoal Substances 0.000 title claims abstract description 63
- 238000002360 preparation method Methods 0.000 title claims abstract description 38
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 238000001035 drying Methods 0.000 claims abstract description 31
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 20
- 239000011265 semifinished product Substances 0.000 claims abstract description 16
- 238000010521 absorption reaction Methods 0.000 claims abstract description 14
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 10
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims abstract description 9
- 230000009102 absorption Effects 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 239000000047 product Substances 0.000 claims description 11
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 8
- 238000013019 agitation Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 20
- 239000003814 drug Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 238000001179 sorption measurement Methods 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 238000007598 dipping method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000003916 acid precipitation Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- 240000007049 Juglans regia Species 0.000 description 1
- 235000009496 Juglans regia Nutrition 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 235000009827 Prunus armeniaca Nutrition 0.000 description 1
- 244000018633 Prunus armeniaca Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000002156 adsorbate Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 231100000518 lethal Toxicity 0.000 description 1
- 230000001665 lethal effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical class C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 235000020234 walnut Nutrition 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
- B01J20/043—Carbonates or bicarbonates, e.g. limestone, dolomite, aragonite
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
- B01J20/3289—Coatings involving more than one layer of same or different nature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/606—Carbonates
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
This application discloses a kind of preparation process of modified high-efficient acid-resistance gas active charcoal.The preparation process of the modified high-efficient acid-resistance gas active charcoal, it is comprised the following steps that：(1), sorting：It is base charcoal to select activated carbon；(2), the first mixed liquor is prepared：Sodium acid carbonate is dissolved in water and obtains the first mixed liquor；(3), the second mixed liquor is prepared：Sodium carbonate is dissolved in water and obtains the second mixed liquor；(4), impregnate：The base charcoal is placed in first mixed liquor and is impregnated；(5), dry：The base charcoal that absorption has first mixed liquor is dried into obtain semi-finished product；(6), the 3rd mixed liquor is prepared：First mixed liquor and the second mixed liquor are mixed into obtain the 3rd mixed liquor；(7), double-steeping：The semi-finished product are impregnated in the 3rd mixed liquor；(8), secondary drying：Semi-finished product after double-steeping are subjected to secondary drying.The adsorbable sour gas of activated carbon that the preparation process of the modified high-efficient acid-resistance gas active charcoal produces.
Description
Technical field
This application involves field of environment protection, more particularly to a kind of preparation process of modified high-efficient acid-resistance gas active charcoal.
Background technology
Sour gas is harmful to our mankind, and sulfur dioxide, sulfur trioxide are contained if air has been contaminated wherein
Chemically reacted Deng, these gases in rainy day and oxygen etc., generate the highly acid chemical substance of sulfuric acid, sulfuric acid has strong rotten
Erosion acts on, and corrosion is just had naturally to the object on ground, and here it is acid rain, acid rain is particularly the influence maximum to trees, can be with
It is lethal, environment for human survival is seriously affected, so the whole world pays special attention to environment, it is empty to reduce production pollution to formulate many measures
The factory of gas, develops green economy, green living
In the prior art on the preparation process for the activated carbon for purifying air, in terms of selected raw material, not by activated carbon
Water capacity take into account, activated carbon depends on the adsorbance of medicament the size of its water capacity, if additive amount of medicament is less than
Water capacity does not reach effect then, and additive amount of medicament exceedes water capacity, and it will cause unnecessary waste；It is existing in terms of medicament preparation
Have that medicament kind in technology and comparison of ingredients are single, and guard time deficiency, the group that can be reacted are less；City at present
The product quality that mainly the main forming charcoal of the preparation process of modified acid-resistance gas active charcoal is produced on field be not it is fine,
Limited sorption capacity, does not possess good adsorption capacity to special adsorbate, that is, sour gas.Service life is short, not secondary
Dipping process, medicament appendix are not abundant enough；The medicament of addition fails fully to cure so that later stage guard time deficiency, effect is not
It is good.So need to propose to improve.
The content of the invention
It is an object of the invention to provide a kind of preparation process of modified high-efficient acid-resistance gas active charcoal, its work manufactured
Property charcoal have intensity is high, adsorption capacity is strong, adsorption capacity is big, ash content is few, the rate of adsorption is fast, guard time is long, protection effect is good,
The features such as protecting long lifespan.
To achieve the above object, the present invention provides following technical solution：
The embodiment of the present application discloses a kind of preparation process of modified high-efficient acid-resistance gas active charcoal, its specific steps is such as
Under：
(1), sorting：It is base charcoal to select activated carbon；
(2), the first mixed liquor is prepared：Sodium acid carbonate is dissolved in water and obtains the first mixed liquor；
(3), the second mixed liquor is prepared：Sodium carbonate is dissolved in water and obtains the second mixed liquor；
(4), impregnate：The base charcoal is placed in first mixed liquor and is impregnated；
(5), dry：The base charcoal that absorption has first mixed liquor is dried into obtain semi-finished product；
(6), the 3rd mixed liquor is prepared：First mixed liquor and the second mixed liquor are mixed into obtain the 3rd mixed liquor；
(7), double-steeping：Semi-finished product after drying are impregnated in the 3rd mixed liquor；
(8), secondary drying：Semi-finished product after double-steeping are subjected to secondary drying.
Preferably, in the preparation process of above-mentioned modified high-efficient acid-resistance gas active charcoal, the base charcoal described in step (1)
Water capacity be not less than 80%, moisture be not more than 3%, intensity be not less than 85%, benzene vapour guard time is not less than
45min。
Preferably, in the preparation process of above-mentioned modified high-efficient acid-resistance gas active charcoal, in step (2), the carbon
The mass ratio of sour hydrogen sodium and water is 3：1, the sodium acid carbonate is heated to 30-50 DEG C under agitation after being added to the water, and
20min is kept the temperature, first mixed liquor is heated to 70 DEG C after insulation, insulation 10min postcoolings to room temperature.
Preferably, in the preparation process of above-mentioned modified high-efficient acid-resistance gas active charcoal, in step (3), the carbon
Sour sodium and water are launched according to the ratio of 30g sodium carbonate in the water of every 500ml.
Preferably, in the preparation process of above-mentioned modified high-efficient acid-resistance gas active charcoal, second is mixed obtained by step (3)
The quality for closing liquid is the 3% of the base charcoal quality.
Preferably, in the preparation process of above-mentioned modified high-efficient acid-resistance gas active charcoal, in step (4), described
The amount of one mixed liquor addition subtracts the moisture of base charcoal with the mass percent of the base charcoal for the water capacity of the base charcoal, will
Absorb the base charcoal after first mixed liquor and be fitted into polybag and seal.
Preferably, in the preparation process of above-mentioned modified high-efficient acid-resistance gas active charcoal, in step (5), first
Drying in-furnace temperature is when reaching 100-150 DEG C, and the activated carbon that the absorption obtained by step (4) has first mixed liquor is put into the
Drying in one drying oven, and continue to heat, after the first drying oven air outlet temperature reaches more than 125 ± 5 DEG C, the reaction was continued
30-50min；Reaction end continues to be heated to 130 ± 5 DEG C, and the moisture of base charcoal is dried to 1-3% obtains semi-finished product.
Preferably, in the preparation process of above-mentioned modified high-efficient acid-resistance gas active charcoal, in step (6), described
Mixes to obtain the 3rd mixed liquor in one mixed liquor and the second mixed liquor input water, first mixed liquor, the second mixed liquor and
Water is with 4:3:1 ratio is prepared, and the temperature of the water is 30-40 DEG C, and the 3rd mixed liquor is accomplished to before not from preparation
12h must be exceeded, in whole process for preparation, the temperature of the 3rd mixed liquor should be maintained at 30-50 DEG C.
Preferably, in the preparation process of above-mentioned modified high-efficient acid-resistance gas active charcoal, have being absorbed in step (7)
The semi-finished product of 3rd mixed liquor are fitted into sealing in polybag and place more than 8h.
Preferably, in the preparation process of above-mentioned modified high-efficient acid-resistance gas active charcoal, in step (8), when second
When drying in-furnace temperature reaches 60 DEG C, the semi-finished product that the absorption obtained by step (7) has the 3rd mixed liquor are put into the second baking
Dry stove, and continue to heat, after activated carbon temperature reaches more than 80 DEG C, the reaction was continued 30-50min；Reaction end continues to heat
To 90 ± 5 DEG C, semi-finished product are dried to the finished product that moisture is 1-3%.
Compared with prior art, the advantage of the invention is that：The preparation process of the modified high-efficient acid-resistance gas active charcoal
The water capacity of activated carbon is considered during sorting, so can reach absorption property in dipping and cause to waste；It is living
Property charcoal in a variety of mixed liquors of absorption, sodium acid carbonate plays in weak base and the premise of the effect of sour gas in the first mixed liquor
Under, sodium carbonate continues to lift up barrier propterty in the second mixed liquor, product guard time, protection effect is significantly improved；Two
Secondary drying is dried using gradient temperature, there is insulation and temperature gradients process, the product with stable quality for coming out drying.
Brief description of the drawings
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in application, for those of ordinary skill in the art, without creative efforts,
Other attached drawings can also be obtained according to these attached drawings.
Fig. 1 show the preparation process route map of modified high-efficient acid-resistance gas active charcoal in the specific embodiment of the invention.
Embodiment
The present invention is described further by the following example：According to following embodiments, the present invention may be better understood.
However, as it will be easily appreciated by one skilled in the art that embodiment described specific material ratio, process conditions and its result are only used
In the explanation present invention, without the present invention described in detail in claims should will not be limited.
Embodiment
With reference to shown in Fig. 1, a kind of preparation process of modified high-efficient acid-resistance gas active charcoal, includes the following steps：
(1), sorting：Selection activated carbon is base charcoal, and the water capacity of selected activated carbon is 85%, moisture 2%, intensity
Be 50min to benzene vapour guard time for 90%, certain activated carbon is not limited only to coal quality column charcoal, can also be coconut husk, apricot shell,
Walnut shell, wooden column, bamboo charcoal, alumina base ball etc. other contain adsorptivity, be adapted to when catalyst carrier material；
(2), the first mixed liquor is prepared：It is 3 by the mass ratio of sodium acid carbonate and water：1 mixes to obtain the first mixed liquor, carbonic acid
Hydrogen sodium is heated to 45 DEG C under agitation after being added to the water, and keeps the temperature 20min, adds first mixed liquor after insulation
Heat is to 70 DEG C, insulation 10min postcoolings to room temperature；
(3), the second mixed liquor is prepared：Sodium carbonate and water are launched according to the ratio of 30g sodium carbonate in the water of every 500ml, most
The quality for preparing the second mixed liquor eventually is the 3% of the quality of activated carbon；
(4), impregnate：The activated carbon is placed in first mixed liquor and is impregnated, the amount of the first mixed liquor addition
For the 83% of base charcoal quality；
(5), dry：When the first drying in-furnace temperature reaches 130 DEG C, the absorption obtained by step (4) is had described first
The activated carbon of mixed liquor is put into drying in the first drying oven, and continues to heat, when the first drying oven air outlet temperature reaches 130 DEG C
More than after, keep the temperature and the reaction was continued 45min, reaction end continue to be heated to 135 DEG C, half that base charcoal is dried to that moisture is 2%
Finished product；
(6), the 3rd mixed liquor is prepared：The 3rd mixed liquor is mixed to obtain in first mixed liquor and the second mixed liquor input water, the
One mixed liquor, the second mixed liquor and water are with 4:3:1 ratio is prepared, and the temperature control of water is at 35 DEG C before mixing, the 3rd mixed liquor
All come into operation after completion 3h is prepared, in whole process for preparation, the temperature of the 3rd mixed liquor should be maintained at 30-50 DEG C；
(7), double-steeping：Activated carbon after drying is impregnated in the 3rd mixed liquor, absorption is had into the 3rd mixed liquor
Activated carbon be fitted into polybag sealing and place 12h；
(8), secondary drying：When the second drying in-furnace temperature reaches 60 DEG C, the absorption obtained by step (7) is had described the
The activated carbon of three mixed liquors is put into the second drying oven, and continues to heat, and after activated carbon temperature reaches 80 DEG C, is further continued for reacting
45min, reaction end continue to be heated to 95 DEG C, and semi-finished product are dried to the finished product that moisture is 2%.
Obtained finished activated charcoal is tested according to national standard GB 2890-2009, protects the time of sour gas to reach
45min, reaches 1 grade of standard of national regulation.
In conclusion the preparation process of the modified high-efficient acid-resistance gas active charcoal considers activated carbon during sorting
Water capacity, so can reach absorption property in dipping and cause to waste；The a variety of mixed liquors of absorption in activated carbon,
Sodium acid carbonate is played in weak base and on the premise of the effect of sour gas in first mixed liquor, and sodium carbonate continues in the second mixed liquor
Barrier propterty is lifted, product guard time, protection effect is significantly improved；Drying is dried using gradient temperature twice, is had
Insulation and temperature gradients process, the product with stable quality for coming out drying.
Here, it should also be noted that, in order to avoid having obscured the present invention because of unnecessary details, in the accompanying drawings only
Show the structure and/or processing step closely related with scheme according to the present invention, and eliminate little with relation of the present invention
Other details.
Finally, it is to be noted that, term " comprising ", "comprising" or its any other variant be intended to it is non-exclusive
Property includes, so that process, method, article or equipment including a series of elements not only include those key elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Key element.
Claims (10)
1. a kind of preparation process of modified high-efficient acid-resistance gas active charcoal, it is characterised in that comprise the following steps that：
(1), sorting：It is base charcoal to select activated carbon；
(2), the first mixed liquor is prepared：Sodium acid carbonate is dissolved in water and obtains the first mixed liquor；
(3), the second mixed liquor is prepared：Sodium carbonate is dissolved in water and obtains the second mixed liquor；
(4), impregnate：The base charcoal is placed in first mixed liquor and is impregnated；
(5), dry：The base charcoal that absorption has first mixed liquor is dried into obtain semi-finished product；
(6), the 3rd mixed liquor is prepared：First mixed liquor and the second mixed liquor are mixed into obtain the 3rd mixed liquor；
(7), double-steeping：Semi-finished product after drying are impregnated in the 3rd mixed liquor；
(8), secondary drying：Semi-finished product after double-steeping are subjected to secondary drying.
2. the preparation process of modified high-efficient acid-resistance gas active charcoal according to claim 1, it is characterised in that：Step
(1) water capacity of the base charcoal described in is not less than 80%, and moisture is not more than 3%, and intensity is not less than 85%, and benzene vapour is protected
Time is not less than 45min.
3. the preparation process of modified high-efficient acid-resistance gas active charcoal according to claim 1, it is characterised in that：Step
(2) in, the mass ratio of the sodium acid carbonate and water is 3：1, the sodium acid carbonate heats under agitation after being added to the water
To 30-50 DEG C, and 20min is kept the temperature, first mixed liquor is heated to 70 DEG C after insulation, insulation 10min postcoolings are extremely
Room temperature.
4. the preparation process of modified high-efficient acid-resistance gas active charcoal according to claim 1, it is characterised in that：Step
(3) in, the sodium carbonate and water are launched according to the ratio of 30g sodium carbonate in the water of every 500ml.
5. the preparation process of modified high-efficient acid-resistance gas active charcoal according to claim 4, it is characterised in that：Step
(3) quality of the second mixed liquor of gained is the 3% of the base charcoal quality.
6. the preparation process of modified high-efficient acid-resistance gas active charcoal according to claim 1, it is characterised in that：Step
(4) in, the amount and the mass percent of the base charcoal of the first mixed liquor addition subtract base charcoal for the water capacity of the base charcoal
Moisture, the base charcoal after first mixed liquor will be absorbed be fitted into polybag and seal.
7. the preparation process of modified high-efficient acid-resistance gas active charcoal according to claim 1, it is characterised in that：Step
(5) in, when the first drying in-furnace temperature reaches 100-150 DEG C, the absorption obtained by step (4) there is into first mixed liquor
Activated carbon is put into drying in the first drying oven, and continues to heat, when the first drying oven air outlet temperature reaches more than 125 ± 5 DEG C
Afterwards, the reaction was continued 30-50min；Reaction end continues to be heated to 130 ± 5 DEG C, by the moisture of base charcoal be dried to 1-3% obtain half into
Product.
8. the preparation process of modified high-efficient acid-resistance gas active charcoal according to claim 1, it is characterised in that：Step
(6) in, first mixed liquor and the second mixed liquor, which are put into water, mixes to obtain the 3rd mixed liquor, first mixed liquor,
Second mixed liquor and water are with 4:3:1 ratio is prepared, and the temperature of the water is 30-40 DEG C, and the 3rd mixed liquor is from having prepared
Into to must not exceed 12h before use, in whole process for preparation, the temperature of the 3rd mixed liquor should be maintained at 30-50 DEG C.
9. the preparation process of modified high-efficient acid-resistance gas active charcoal according to claim 1, it is characterised in that：By step
(7) semi-finished product that being absorbed in has the 3rd mixed liquor are fitted into sealing in polybag and place more than 8h.
10. the preparation process of modified high-efficient acid-resistance gas active charcoal according to claim 1, it is characterised in that：Step
(8) in, when second drying in-furnace temperature reach 60 DEG C when, by absorptions obtained by step (7) have the 3rd mixed liquor partly into
Product are put into the second drying oven, and continue to heat, after activated carbon temperature reaches more than 80 DEG C, the reaction was continued 30-50min；Reaction
End continues to be heated to 90 ± 5 DEG C, and semi-finished product are dried to the finished product that moisture is 1-3%.
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