CN108590733A - A kind of preparation method and product of the explosion-suppressing material for inhibiting methane to explode - Google Patents
A kind of preparation method and product of the explosion-suppressing material for inhibiting methane to explode Download PDFInfo
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- CN108590733A CN108590733A CN201810385066.5A CN201810385066A CN108590733A CN 108590733 A CN108590733 A CN 108590733A CN 201810385066 A CN201810385066 A CN 201810385066A CN 108590733 A CN108590733 A CN 108590733A
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 239000000463 material Substances 0.000 title claims abstract description 62
- 230000002401 inhibitory effect Effects 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 229960000892 attapulgite Drugs 0.000 claims abstract description 76
- 229910052625 palygorskite Inorganic materials 0.000 claims abstract description 76
- 238000004880 explosion Methods 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000006185 dispersion Substances 0.000 claims abstract description 14
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims abstract description 13
- UIIMBOGNXHQVGW-UHFFFAOYSA-M sodium bicarbonate Substances [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims abstract description 13
- 239000000243 solution Substances 0.000 claims description 25
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 24
- 238000001556 precipitation Methods 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 17
- 238000000227 grinding Methods 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 15
- 239000012266 salt solution Substances 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- 239000000725 suspension Substances 0.000 claims description 10
- 238000000746 purification Methods 0.000 claims description 9
- 239000002689 soil Substances 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 5
- 239000000908 ammonium hydroxide Substances 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 230000003068 static effect Effects 0.000 claims description 5
- 238000000967 suction filtration Methods 0.000 claims description 5
- 238000005119 centrifugation Methods 0.000 claims description 4
- 239000000843 powder Substances 0.000 abstract description 9
- 239000002245 particle Substances 0.000 abstract description 5
- 230000005764 inhibitory process Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005979 thermal decomposition reaction Methods 0.000 abstract description 3
- 238000005474 detonation Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 11
- 239000012153 distilled water Substances 0.000 description 9
- 230000001629 suppression Effects 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 239000003245 coal Substances 0.000 description 6
- 235000019441 ethanol Nutrition 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 125000005909 ethyl alcohol group Chemical group 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 150000003254 radicals Chemical class 0.000 description 3
- 238000002604 ultrasonography Methods 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910000000 metal hydroxide Inorganic materials 0.000 description 2
- 150000004692 metal hydroxides Chemical class 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229920004449 Halon® Polymers 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to a kind of preparation methods and product of the explosion-suppressing material of inhibition methane explosion, belong to explosion-suppressing material technical field, and this method is by NaHCO3It is particle loaded to the thermal decomposition caloric receptivity of explosion-suppressing material in the high temperature environment on modified attapulgite, is on the one hand improved, on the other hand improve the specific surface area of the material and the dispersion degree in explosion space.The explosion-suppressing material can also handle secondary detonation, because blast wave impact force can again raise the powder to sink, inhibiting effect is played to subsequent explosion flame.The explosion-suppressing material preparation method is simple to operation and at low cost, is suitble to industrialized production.
Description
Technical field
The invention belongs to explosion-suppressing material technical fields, and in particular to a kind of preparation side for the explosion-suppressing material for inhibiting methane to explode
Method and product.
Background technology
Coal is the important basic resource in China, in the period of following considerably long in, energy supply based on coal and disappear
Expense pattern is difficult to change.Gas is the association product in coal Filling process, based on methane, because methane has combustion when meeting burning things which may cause a fire disaster
The possibility burnt and exploded, so gas explosion disaster becomes one of the major casualty for restricting safe coal exploitation.Gas explosion
It not only causes a tremendous loss of lives, but also roadway facility can be destroyed, interrupt production, can also cause dust explosion, mine sometimes
Fire, roadway such as collapse at the secondary injuries.Therefore, control gas explosion accident is always the main direction of each coal producer's safety of coal mines
One of.
Traditional halon fire agent in an atmosphere by solar radiation after, decomposite chlorine, the free radical of bromine seriously destroys
Ozone layer；The superfine water mist fire extinguishing system of scholar's research at present, although there is certain progress, but still has deficiency, main to consider
Deposit problem both ways：Water mist can be diffused to space wide enough；Sufficiently small and fireballing water particle can be generated.
Therefore, it is badly in need of a kind of explosion-suppressing material environmentally protective, effectiveness of explosion suppression is excellent.
Invention content
In view of this, one of the objects of the present invention is to provide a kind of preparation sides of the explosion-suppressing material of inhibition methane explosion
Method；The second purpose is to provide a kind of explosion-suppressing material of inhibition methane explosion.
In order to achieve the above objectives, the present invention provides the following technical solutions：
1, a kind of preparation method for the explosion-suppressing material for inhibiting methane to explode, described method includes following steps：
(1) 140-200 mesh sieve is crossed after drying attapulgite, extracting screen underflow prepares attapulgite suspension, will be described recessed
Upper layer solid is taken after convex stick soil suspension centrifugation slagging-off, is pulverized after the upper layer solid is dried, it is recessed after being purified
Convex stick soil；
(2) add a concentration of 4-6mol/L's after being added to the water the attapulgite after the purification obtained in step (1)
Hydrochloric acid solution stirs 1-2h at 65-85 DEG C, and metal salt solution is made, the attapulgite and hydrochloric acid solution after the purification
Mass volume ratio is 1:5-6, the mass volume ratio unit are g:mL；
(3) ammonium hydroxide is added dropwise after metal salt solution obtained in step (2) is cooled to room temperature to the metal salt solution
PH value is 7.6-8, forms gel precipitation, adds absolute ethyl alcohol, and 0.5-1h is stirred at 40-50 DEG C, static to place to described
Gel precipitation is precipitated completely；
(4) gel precipitation obtained in step (3) is washed with water and is carried out at the same time suction filtration processing, it then will be described
It pulverizes after gel precipitation drying, modified attapulgite is made；
(5) the modified attapulgite prepared in step (4) is added in absolute ethyl alcohol, modified concave convex rod is made
Native dispersion liquid, then by NaHCO3Solution is added mixing in the modified attapulgite dispersion liquid and obtains mixed liquor, will be described
Mixed liquor filters after standing 1-3h, will pulverize after filter residue and drying, and the explosion-suppressing material for inhibiting methane explosion is made；The mixing
Modified attapulgite and NaHCO in liquid3Mass ratio be 3-4:5.
Preferably, in step (1), the attapulgite drying is specially：By attapulgite at 60-70 DEG C, infrared striation
Dry 8-12h under part, and stir the attapulgite by 12 times/min.
Preferably, in step (1), the speed of the centrifugation is 1300-1500r/min, time 10-15min.
Preferably, in step (1), the upper layer solid drying is specially：The dry 8-12h at 65-85 DEG C；The grinding
Time be 2-3h.
Preferably, in step (3), the addition of the absolute ethyl alcohol is equal to the addition of hydrochloric acid solution in step (2).
Preferably, in step (4), the drying is specially：Dry 8-12h, the time of the grinding are at 65-85 DEG C
1-2h。
Preferably, in step (5), modified attapulgite and anhydrous second in the modified attapulgite dispersion liquid
The mass volume ratio of alcohol is 3-4:10, the mass volume ratio unit is g:mL.
Preferably, in step (5), the NaHCO3NaHCO in solution3Mass volume ratio with water is 1:10, the quality
Volume ratio unit is g:mL.
Preferably, in step (5), the drying is specially：Dry 10-12h, the time of the grinding at 60-70 DEG C
For 1-2h.
2, the explosion-suppressing material for inhibiting methane explosion prepared by the method.
The beneficial effects of the present invention are：The present invention provides a kind of preparation methods of the explosion-suppressing material of inhibition methane explosion
And product, this method is by NaHCO3It is particle loaded on modified attapulgite, on the one hand improve explosion-suppressing material in high temperature
Thermal decomposition caloric receptivity in environment, on the other hand improves the specific surface area of the material and the dispersion degree in explosion space.Wherein,
Modified attapulgite inherit the preferable draw ratio of former attapulgite and abundant inner duct and it is non-ignitable the advantages that, it is this more
The structure of hole makes it have larger specific surface area and higher surface energy, can not only effectively be adsorbed during datonation-inhibition
The living radical generated in explosion reduces living radical concentration, reduces chain reaction activity, forces reaction chain termination, also
Toxic volatile ingredient can be absorbed, environmentally protective requirement is reached；In addition, chemical constituent occurs very in modified attapulgite
Big to change, the alkali metal ions such as aluminium, magnesium are removed in original ingredient, and the metal oxides such as magnesium, aluminium become metal hydroxides,
In hot environment, metal hydroxides can be pyrolyzed water outlet and absorb a large amount of energy, make the explosion-suppressing material finally prepared have compared with
High thermal decomposition caloric receptivity, can effectively reduce the temperature of flare system in mine gas explosion.The suppression prepared by this method
Quick-fried material can also handle secondary detonation, because blast wave impact force can again raise the powder to sink, to subsequent explosion
Flame plays inhibiting effect.The explosion-suppressing material preparation method is simple to operation and at low cost, is suitble to industrialized production.
Description of the drawings
In order to keep the purpose of the present invention, technical solution and advantageous effect clearer, the present invention provides following attached drawing and carries out
Explanation：
Fig. 1 is the scanning electron microscope (SEM) photograph of the explosion-suppressing material prepared in embodiment 2；
Fig. 2 is the explosion-suppressing material that the prepares pressure history figure in methane blast process in embodiment 2.
Specific implementation mode
The preferred embodiment of the present invention will be described in detail below.
Embodiment 1
Prepare the explosion-suppressing material for inhibiting methane explosion
(1) by attapulgite at 60 DEG C, dry 12h, during which stirs attapulgite, so by 12 times/min under the conditions of infrared light
140 mesh sieve is crossed afterwards, and extracting screen underflow prepares attapulgite suspension, and attapulgite suspension is centrifuged by the speed of 1300r/min
Upper layer solid is taken after 15min slagging-off, upper layer solid is pulverized at 65 DEG C after dry 12h, the time of grinding is 3h, is obtained
Attapulgite after purification；
(2) 104mL concentration is added after the attapulgite after the purification obtained in 20g steps (1) being added in distilled water
For the hydrochloric acid solution of 6mol/L, 2h is stirred at 85 DEG C, metal salt solution is made；
(3) ammonium hydroxide is added dropwise after metal salt solution obtained in step (2) is cooled to room temperature to the metal salt solution
PH value is 7.6, forms gel precipitation, adds the absolute ethyl alcohol isometric with hydrochloric acid solution in step (2), is stirred at 50 DEG C
0.5h, static place to the gel precipitation are precipitated completely；
(4) gel precipitation obtained in step (3) is washed with distilled water and is carried out at the same time suction filtration processing, then will
Gel precipitation is pulverized at 65 DEG C after dry 12h, and the time of grinding is 1h, and modified attapulgite is made；
(5) ultrasonic disperse in 40mL absolute ethyl alcohols is added in the modified attapulgite prepared in 12g steps (4)
Modified attapulgite dispersion liquid is made, then by 20g NaHCO in 30min3Ultrasound point in 200mL distilled water is added in powder
30min is dissipated, NaHCO is made3Solution, by the NaHCO3Solution is added mixing in the modified attapulgite dispersion liquid and must mix
Liquid to be closed, is filtered after which is stood 1h, filter residue is pulverized at 65 DEG C after dry 11h, the time of grinding is 1.5h,
The explosion-suppressing material for inhibiting methane explosion is made.
Embodiment 2
Prepare the explosion-suppressing material for inhibiting methane explosion
(1) by attapulgite at 65 DEG C, dry 10h, during which stirs attapulgite, so by 12 times/min under the conditions of infrared light
170 mesh sieve is crossed afterwards, and extracting screen underflow prepares attapulgite suspension, and attapulgite suspension is centrifuged by the speed of 1400r/min
Upper layer solid is taken after 12min slagging-off, upper layer solid is pulverized at 70 DEG C after dry 10h, the time of grinding is 2.5h, is obtained
Attapulgite after must purifying；
(2) 100mL concentration is added after the attapulgite after the purification obtained in 20g steps (1) being added in distilled water
For the hydrochloric acid solution of 5mol/L, 1h is stirred at 65 DEG C, metal salt solution is made；
(3) ammonium hydroxide is added dropwise after metal salt solution obtained in step (2) is cooled to room temperature to the metal salt solution
PH value is 8, forms gel precipitation, adds the absolute ethyl alcohol isometric with hydrochloric acid solution in step (2), is stirred at 40 DEG C
1h, static place to the gel precipitation are precipitated completely；
(4) gel precipitation obtained in step (3) is washed with distilled water and is carried out at the same time suction filtration processing, then will
Gel precipitation is pulverized at 70 DEG C after dry 10h, and the time of grinding is 1.5h, and modified attapulgite is made；
(5) ultrasonic disperse in 40mL absolute ethyl alcohols is added in the modified attapulgite prepared in 15g steps (4)
Modified attapulgite dispersion liquid is made, then by 20g NaHCO in 30min3Ultrasound point in 200mL distilled water is added in powder
30min is dissipated, NaHCO is made3Solution, by the NaHCO3Solution is added mixing in the modified attapulgite dispersion liquid and must mix
Liquid is closed, is filtered after which is stood 3h, filter residue is pulverized at 70 DEG C after dry 10h, the time of grinding is 1h, system
The explosion-suppressing material that methane must be inhibited to explode.
The explosion-suppressing material prepared in embodiment 2 is scanned by scanning electron microscope, the results are shown in Figure 1, can by Fig. 1
Know, synthesized explosion-suppressing material is in micro- rodlike, and particle size is 20 μm, in addition to this, attached in larger attapulgite particle surface
Small crystals, grain size is about 1 μm, thus it is speculated that be the NaHCO for being attached to attapulgite powder body channel surfaces3Crystal.
Embodiment 3
Prepare the explosion-suppressing material for inhibiting methane explosion
(1) by attapulgite at 70 DEG C, dry 8h, during which stirs attapulgite, so by 12 times/min under the conditions of infrared light
200 mesh sieve is crossed afterwards, and extracting screen underflow prepares attapulgite suspension, and attapulgite suspension is centrifuged by the speed of 1500r/min
Upper layer solid is taken after 10min slagging-off, upper layer solid is pulverized at 85 DEG C after dry 8h, the time of grinding is 2h, is obtained
Attapulgite after purification；
(2) 120mL concentration is added after the attapulgite after the purification obtained in 20g steps (1) being added in distilled water
For the hydrochloric acid solution of 4mol/L, 1.5h is stirred at 70 DEG C, metal salt solution is made；
(3) ammonium hydroxide is added dropwise after metal salt solution obtained in step (2) is cooled to room temperature to the metal salt solution
PH value is 7.8, forms gel precipitation, adds the absolute ethyl alcohol isometric with hydrochloric acid solution in step (2), is stirred at 45 DEG C
1h, static place to the gel precipitation are precipitated completely；
(4) gel precipitation obtained in step (3) is washed with distilled water and is carried out at the same time suction filtration processing, then will
Gel precipitation is pulverized at 85 DEG C after dry 8h, and the time of grinding is 2h, and modified attapulgite is made；
(5) ultrasonic disperse in 40mL absolute ethyl alcohols is added in the modified attapulgite prepared in 16g steps (4)
Modified attapulgite dispersion liquid is made, then by 20g NaHCO in 30min3Ultrasound point in 200mL distilled water is added in powder
30min is dissipated, NaHCO is made3Solution, by the NaHCO3Solution is added mixing in the modified attapulgite dispersion liquid and must mix
Liquid is closed, is filtered after which is stood 2h, filter residue is pulverized at 60 DEG C after dry 12h, the time of grinding is 2h, system
The explosion-suppressing material that methane must be inhibited to explode.
Comparative example 1
Difference lies in do not include step (1)-(4), attapulgite modified in step (5) replaced with embodiment 1
For common concave-convex stick soil.
Comparative example 2
The difference from example 2 is that not including step (1)-(4), attapulgite modified in step (5) is replaced
For common concave-convex stick soil.
Comparative example 3
Difference lies in do not include step (1)-(4), attapulgite modified in step (5) replaced with embodiment 3
For common concave-convex stick soil.
By the embodiment 1-3 and comparative example 1-3 explosion-suppressing materials prepared be placed in the environment that methane concentration is 95% into
Row is datonation-inhibition, tests the blast pressure value of each explosion-suppressing material, test result is shown in Table 1.
The blast pressure value test result of explosion-suppressing material prepared by 1 embodiment 1-3 of table and comparative example 1-3
| Experimental group | Comparative example 1 | Comparative example 2 | Comparative example 3 | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Blast pressure value | 82mbar | 68mbar | 73mbar | 75mbar | 61mbar | 70mbar |
As shown in Table 1, containing the attapulgite modified explosion-suppressing material of equivalent to the effectiveness of explosion suppression of methane be substantially higher in containing
There is the explosion-suppressing material of equivalent common concave-convex stick soil.Wherein, in embodiment 1 explosion-suppressing material compared with explosion-suppressing material in comparative example 1, first
The blast pressure value of alkane reduces 7mbar；Explosion-suppressing material is compared with explosion-suppressing material in comparative example 2, the explosion pressure of methane in embodiment 2
Force value reduces 7mbar；Explosion-suppressing material is reduced compared with explosion-suppressing material in comparative example 3, the blast pressure value of methane in embodiment 3
3mbar.It can be seen that modified attapulgite is more preferable to the effectiveness of explosion suppression of methane.Wherein, it is prepared in embodiment 2 datonation-inhibition
Material is best to the effectiveness of explosion suppression of methane.
By the explosion-suppressing material prepared in embodiment 1-3 and it is attapulgite modified be placed in methane concentration be 95% environment in into
Row is datonation-inhibition, tests the blast pressure value of each explosion-suppressing material, test result is shown in Table 2.
As shown in Table 2, simple attapulgite modified explosion-suppressing material and it is compounded with NaHCO3Powder it is attapulgite modified
It compares, it is compound by NaHCO3The attapulgite modified explosion-suppressing material of powder is substantially higher in simple the effectiveness of explosion suppression of methane
Attapulgite modified explosion-suppressing material.Wherein, the explosion-suppressing material that prepared by embodiment 1 is recessed compared with the simple modification prepared in embodiment 1
The blast pressure value of convex stick soil explosion-suppressing material, methane reduces 21mbar；Explosion-suppressing material prepared by embodiment 2 in embodiment 2 compared with making
The blast pressure value of standby simple attapulgite modified explosion-suppressing material, methane reduces 25mbar；Datonation-inhibition material prepared by embodiment 3
Expect that, compared with the simple attapulgite modified explosion-suppressing material prepared in embodiment 3, the blast pressure value of methane reduces 14mbar；Thus
As it can be seen that attapulgite modified and NaHCO3The synergistic effect of powder is more preferable to methane effectiveness of explosion suppression.
The explosion-suppressing material prepared in embodiment 2 is added to progress methane explosive test in methane, is in addition implemented with being not added with
The methane of the explosion-suppressing material prepared in example 2 explodes check experiment group as methane, test result as shown in Fig. 2, as shown in Figure 2,
In addition embodiment 2 after the explosion-suppressing material for preparing, the first peak value and the second peak value of methane explosion decline respectively 1.72kpa and
1.6kpa, while the delay time of the first peak value is 1.6ms, so the addition of the explosion-suppressing material prepared in embodiment 2 is to methane
Bursting strength there is apparent datonation-inhibition effect.
Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (10)
1. a kind of preparation method for the explosion-suppressing material for inhibiting methane to explode, which is characterized in that described method includes following steps：
(1) 140-200 mesh sieve is crossed after drying attapulgite, extracting screen underflow prepares attapulgite suspension, by the concave convex rod
Upper layer solid is taken after native suspension centrifugation slagging-off, is pulverized after the upper layer solid is dried, the concave convex rod after being purified
Soil；
(2) hydrochloric acid of a concentration of 4-6mol/L is added after being added to the water the attapulgite after the purification obtained in step (1)
Solution stirs 1-2h at 65-85 DEG C, and metal salt solution, the quality of attapulgite and hydrochloric acid solution after the purification is made
Volume ratio is 1:5-6, the mass volume ratio unit are g:mL；
(3) ammonium hydroxide is added dropwise after metal salt solution obtained in step (2) is cooled to room temperature to the pH value of the metal salt solution
For 7.6-8, gel precipitation is formed, absolute ethyl alcohol is added, 0.5-1h is stirred at 40-50 DEG C, it is static to place to the gel
Precipitation is precipitated completely；
(4) gel precipitation obtained in step (3) is washed with water and is carried out at the same time suction filtration processing, then by the gel
It pulverizes after precipitation is dry, modified attapulgite is made；
(5) the modified attapulgite prepared in step (4) is added in absolute ethyl alcohol, modified attapulgite point is made
Dispersion liquid, then by NaHCO3Solution is added mixing in the modified attapulgite dispersion liquid and obtains mixed liquor, by the mixing
Liquid filters after standing 1-3h, will pulverize after filter residue and drying, and the explosion-suppressing material for inhibiting methane explosion is made；In the mixed liquor
Modified attapulgite and NaHCO3Mass ratio be 3-4:5.
2. the method as described in claim 1, which is characterized in that in step (1), the attapulgite drying is specially：It will be recessed
Convex stick soil dry 8-12h under the conditions of 60-70 DEG C, infrared light, and stir the attapulgite by 12 times/min.
3. the method as described in claim 1, which is characterized in that in step (1), the speed of the centrifugation is 1300-1500r/
Min, time 10-15min.
4. the method as described in claim 1, which is characterized in that in step (1), the upper layer solid drying is specially：In 65-
Dry 8-12h at 85 DEG C；The time of the grinding is 2-3h.
5. the method as described in claim 1, which is characterized in that in step (3), the addition of the absolute ethyl alcohol is equal to step
(2) addition of hydrochloric acid solution in.
6. the method as described in claim 1, which is characterized in that in step (4), the drying is specially：It is done at 65-85 DEG C
The time of dry 8-12h, the grinding are 1-2h.
7. the method as described in claim 1, which is characterized in that in step (5), in the modified attapulgite dispersion liquid
The mass volume ratio of modified attapulgite and absolute ethyl alcohol is 3-4:10, the mass volume ratio unit is g:mL.
8. the method as described in claim 1, which is characterized in that in step (5), the NaHCO3NaHCO in solution3With water
Mass volume ratio is 1:10, the mass volume ratio unit is g:mL.
9. the method as described in claim 1, which is characterized in that in step (5), the drying is specially：It is done at 60-70 DEG C
The time of dry 10-12h, the grinding are 1-2h.
10. the explosion-suppressing material for inhibiting methane explosion prepared by claim 1-9 any one of them methods.
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