CN110368918A - A kind of Spray granulation method of boehmite powder - Google Patents
A kind of Spray granulation method of boehmite powder Download PDFInfo
- Publication number
- CN110368918A CN110368918A CN201910752465.5A CN201910752465A CN110368918A CN 110368918 A CN110368918 A CN 110368918A CN 201910752465 A CN201910752465 A CN 201910752465A CN 110368918 A CN110368918 A CN 110368918A
- Authority
- CN
- China
- Prior art keywords
- powder
- boehmite powder
- spray granulation
- boehmite
- granulation method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000843 powder Substances 0.000 title claims abstract description 75
- 229910001593 boehmite Inorganic materials 0.000 title claims abstract description 45
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000005469 granulation Methods 0.000 title claims abstract description 17
- 230000003179 granulation Effects 0.000 title claims abstract description 17
- 239000007921 spray Substances 0.000 title claims abstract description 17
- 239000002002 slurry Substances 0.000 claims abstract description 39
- 239000003595 mist Substances 0.000 claims abstract description 20
- 238000005245 sintering Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000011230 binding agent Substances 0.000 claims abstract description 11
- 239000006185 dispersion Substances 0.000 claims abstract description 11
- 239000002270 dispersing agent Substances 0.000 claims abstract description 10
- 239000008236 heating water Substances 0.000 claims abstract description 10
- 239000008367 deionised water Substances 0.000 claims abstract description 9
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 9
- 239000007787 solid Substances 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 238000005516 engineering process Methods 0.000 claims abstract description 5
- 239000004615 ingredient Substances 0.000 claims abstract description 3
- -1 sintering aid Substances 0.000 claims abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 20
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 19
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 19
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 19
- 239000002202 Polyethylene glycol Substances 0.000 claims description 18
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 18
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 18
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 18
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 18
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 18
- 229920001223 polyethylene glycol Polymers 0.000 claims description 18
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 18
- 229920000609 methyl cellulose Polymers 0.000 claims description 16
- 239000001923 methylcellulose Substances 0.000 claims description 16
- 235000010981 methylcellulose Nutrition 0.000 claims description 16
- 239000004927 clay Substances 0.000 claims description 14
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 12
- 239000005995 Aluminium silicate Substances 0.000 claims description 11
- 235000012211 aluminium silicate Nutrition 0.000 claims description 11
- PSZYNBSKGUBXEH-UHFFFAOYSA-M naphthalene-1-sulfonate Chemical compound C1=CC=C2C(S(=O)(=O)[O-])=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-M 0.000 claims description 11
- 239000000377 silicon dioxide Substances 0.000 claims description 10
- 229940009868 aluminum magnesium silicate Drugs 0.000 claims description 9
- WMGSQTMJHBYJMQ-UHFFFAOYSA-N aluminum;magnesium;silicate Chemical compound [Mg+2].[Al+3].[O-][Si]([O-])([O-])[O-] WMGSQTMJHBYJMQ-UHFFFAOYSA-N 0.000 claims description 9
- 239000000440 bentonite Substances 0.000 claims description 8
- 229910000278 bentonite Inorganic materials 0.000 claims description 8
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 8
- 238000007914 intraventricular administration Methods 0.000 claims description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 6
- 239000011734 sodium Substances 0.000 claims description 6
- 229920000058 polyacrylate Polymers 0.000 claims description 5
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 4
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 4
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 4
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- ZRXADTFMGYNRKV-UHFFFAOYSA-N [S].C1=CC=CC2=CC=CC=C21 Chemical compound [S].C1=CC=CC2=CC=CC=C21 ZRXADTFMGYNRKV-UHFFFAOYSA-N 0.000 claims 1
- 229910052622 kaolinite Inorganic materials 0.000 claims 1
- 238000002360 preparation method Methods 0.000 claims 1
- 239000002689 soil Substances 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 13
- 239000003054 catalyst Substances 0.000 abstract description 10
- 238000000465 moulding Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000000314 lubricant Substances 0.000 abstract description 2
- 238000007493 shaping process Methods 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229910001051 Magnalium Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 150000001336 alkenes Chemical class 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
- 238000000889 atomisation Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 238000010998 test method Methods 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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
- B01J21/04—Alumina
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
- B01J37/0018—Addition of a binding agent or of material, later completely removed among others as result of heat treatment, leaching or washing,(e.g. forming of pores; protective layer, desintegrating by heat)
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
- B01J37/0027—Powdering
- B01J37/0045—Drying a slurry, e.g. spray drying
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
- B01J37/0063—Granulating
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
Abstract
The present invention provides a kind of Spray granulation method of boehmite powder, belongs to shaping of catalyst technical field.It include: 1) ingredient: in terms of slurries gross mass, boehmite powder, sintering aid, binder, dispersing agent are weighed according to following mass fraction: 35~50wt% of boehmite powder, 2.5~5.5wt% of sintering aid, 1.0~4.0wt% of binder, 1.0~4.0wt% of dispersing agent, deionized water is added, heating water bath and stirring are made into the stable dispersion slurries that solid content is 38~55%；2) mist projection granulating: obtained slurries are directly sprayed in people's pelletizer, and control atomizing granulating technology parameter obtains being granulated powder.The mist projection granulating powder particles being prepared using the method for the present invention are in regular ball, and porous media is uniform, centralized particle diameter and controllable.Mist projection granulating powder mobility, compactness and reproducible can carry out continuous automatic moulding it is not necessary that lubricant is added, and save the cost improves production efficiency.
Description
Technical field
The invention belongs to shaping of catalyst technical field, specially a kind of Spray granulation method of boehmite powder.
Background technique
Boehmite also known as false boehmite, nontoxic, tasteless, odorless, white powder, with specific surface area
Greatly, with high purity, anticorrosive good, it is a kind of important large Inorganic Chemicals, in chemical industry catalysis, petroleum hydrofinishing, synthesis
The catalyst fields such as chlorine, car tail gas purification are widely used, and are mainly used as production catalyst carrier --- the original of activated alumina
Material.
With the development of boehmite moulding process, people to how to prepare high-performance boehmite and its it is related at
Type technical study is more and more, specifically how prepares that a kind of good fluidity, particle is spherical in shape, particle diameter distribution is uniform, compactness
Good powder body material is more by the favor of researcher.Spray granulation is mentioned with to powder body material building-up property requirement
Height starts to be applied to catalyst carrier forming field.Carrying out mist projection granulating to boehmite slurry not only can be to avoid each component
Reunite again and sedimentation separation, maintain the original uniformity of slurry；Slurry atomization is uniform simultaneously, obtains regular shape, partial size
It is evenly distributed, good fluidity and the granulation powder for being suitble to continuous automatic moulding.The production efficiency for improving catalyst carrier, more has
Conducive to the uniformity, stability and anti-sintering property of carrier quality, the service life of catalyst is extended, is brought more to enterprise
More economic benefits has good prospects for commercial application.
Summary of the invention
The purpose of the present invention is to provide a kind of Spray granulation methods of boehmite powder.Boehmite after spraying
Powder fluidity greatly improves, and diameter of particle is evenly distributed, compactness is good, is appropriate for continuous automatic moulding, produces high quality
Catalyst carrier.
The object of the invention is achieved through the following technical solutions:
A kind of Spray granulation method of boehmite powder, comprising the following steps:
1) ingredient: in terms of slurries gross mass, by boehmite powder, sintering aid, binder, dispersing agent according to following matter
Amount score is weighed: boehmite 35~50wt% of powder, 2.5~5.5wt% of sintering aid, and binder 1.0~
Deionized water is added in 4.0wt%, 1.0~4.0wt% of dispersing agent, and it is 38~55% that heating water bath and stirring, which are made into solid content,
Stable dispersion slurries；
2) mist projection granulating: obtained slurries are directly sprayed in people's pelletizer, and control atomizing granulating technology parameter is granulated
Powder.
Further, the sintering aid is one of clay, bentonite, kaolin or a variety of.It is preferred that sintering aid energy
The mechanical strength for enough improving powder tabletting carrier, reduces the rate of wear of catalyst, extends the service life of catalyst.
Further, the binder is polyvinyl alcohol (PVA), silica solution, ammonium polyacrylate, hydroxypropyl methyl cellulose
(HPMC), one of aluminum magnesium silicate or a variety of.Preferred binder can enhance the viscosity of slurries phase, form netted knot in water
Structure effectively delays the generation of powder sedimentation, coalescence, improves the stability of slurries.
Further, the dispersing agent is polyethylene glycol (PEG), sodium carboxymethylcellulose (CMC-Na), methylcellulose
(MC), one of polyvinylpyrrolidone (PVP), naphthalene sulfonate D-425 or a variety of.Preferred dispersants can be adsorbed on powder
Particle surface acts on forming stronger protective barrier by steric hindrance, prevents powder particles from assembling again, and make powder particles
Surface is easy to soak, and keeps the dispersion of each substance in slurries more uniform, stable.
Further, in terms of slurries gross mass, the mass fraction of the sintering aid each component is clay: 0.0~
3.5wt%, bentonite: 0.0~3.0wt%, kaolin: 0.0~4.0wt%.
Further, in terms of slurries gross mass, the mass fraction of the binder each component is polyvinyl alcohol (PVA): 0.0~
1.5wt%, silica solution: 0.0~1.5wt%, ammonium polyacrylate: 0.0~0.6wt%, hydroxypropyl methyl cellulose (HPMC):
0.0~1.8wt%, aluminum magnesium silicate: 0.0~0.8wt%.
Further, in terms of slurries gross mass, the mass fraction of the dispersing agent each component is polyethylene glycol (PEG): 0.0~
1.5wt%, sodium carboxymethylcellulose (CMC-Na): 0.0~1.0wt%, methylcellulose (MC): 0.0~2.0wt%, poly- second
Alkene pyrrolidone (PVP): 0.0~1.5wt%, naphthalene sulfonate D-425:0.0~1.0wt.
Further, the water bath heating temperature is 70~95 DEG C, and mixing time is 1~3h.Water-bath can improve in solution
The effect of the surface hydroxyl of hydrogen ion and boehmite, improves the sour dispersion index of boehmite.
Further, the sponging granulator is air-flowing type sponging granulator, and inlet temperature is 240~270 DEG C, outlet temperature
It is 120~150 DEG C, feed rate 55rap/min, dry intraventricular pressure difference is 30~55Pa.Preferably air-stream spraying pelletizer
The contact of gas-liquid two-phase is more flexible when making spraying, it is ensured that droplet has enough residence times；Spray drying tower is smaller, structure
Simply, easy to process；Atomizer operating is convenient, can easily be accommodated.
A kind of boehmite powder, is prepared using method described above.
Compared with prior art, the invention has the following advantages:
It is in regular ball using the mist projection granulating powder particles that the method for the present invention is prepared, porous media is uniform, grain
Diameter distribution is concentrated and controllable.
The mist projection granulating powder mobility that is prepared using the method for the present invention, compactness and reproducible, without being added
Lubricant can carry out continuous automatic moulding, and save the cost improves production efficiency.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Embodiment 1
1, weigh 450.0g boehmite powder, 36.0g clay, 9.0g PVA, 4.5g aluminum magnesium silicate, 9.0g PEG,
563.0g deionized water is added in 6.75g PVP, 4.5g naphthalene sulfonate D-425, and heating water bath is to 75 DEG C and stirs 2h, is made into solid
The stable dispersion slurries that content is 48%.
In terms of slurries gross mass, wherein boehmite powder accounts for 41.56%, and clay accounts for 3.32%, PVA and accounts for 0.83%, silicon
Sour magnalium, which accounts for 0.42%, PEG and accounts for 0.83%, PVP, accounts for 0.62%, and naphthalene sulfonate D-425 accounts for 0.42%；
2, above-mentioned slurries are injected directly into air-flowing type sponging granulator, inlet temperature is 260 DEG C, outlet temperature 150
DEG C, feed rate 55rap/min, dry intraventricular pressure difference is 30~55Pa, obtains mist projection granulating powder, number 1#.
Embodiment 2
1, weigh 450.0g boehmite powder, 13.5g clay, 31.5g kaolin, 13.5g PVA, 4.5g HPMC,
9.0g PEG, 9.0g CMC-Na, 4.5g PVP are weighed in proportion, be added 580.13g deionized water, heating water bath to 85 DEG C simultaneously
2.5h is stirred, the stable dispersion slurries that solid content is 48% are made into.
In terms of slurries gross mass, wherein boehmite powder accounts for 40.34%, and clay accounts for 1.21%, and kaolin accounts for 2.82%,
PVA, which accounts for 1.21%, HPMC and accounts for 0.40%, PEG and account for 0.81%, CMC-Na and account for 0.81%, PVP, accounts for 0.40%；
2, above-mentioned slurries are injected directly into air-flowing type sponging granulator, inlet temperature is 250 DEG C, outlet temperature 140
DEG C, feed rate 55rap/min, dry intraventricular pressure difference is 30~55Pa, obtains mist projection granulating powder, number 2#.
Embodiment 3
1,450.0g boehmite powder, 31.5g bentonite, 22.5g kaolin, 13.5g silica solution, 9.0g are weighed
HPMC, 6.75g aluminum magnesium silicate, 18.0g MC, 13.5g PVP, 9.0g naphthalene sulfonate D-425 are weighed in proportion, and 673.53g is added
Deionized water, heating water bath is to 90 DEG C and stirs 2.5h, is made into the stable dispersion slurries that solid content is 46%.
In terms of slurries gross mass, wherein boehmite powder accounts for 36.08%, and bentonite accounts for 2.53%, and kaolin accounts for
1.80%, silica solution accounts for 1.08%, HPMC and accounts for 0.72%, and aluminum magnesium silicate, which accounts for 0.54%, MC and accounts for 1.44%, PVP, accounts for 1.08%, naphthalene
Sulfonate D-425 accounts for 0.72%；
2, above-mentioned slurries are injected directly into air-flowing type sponging granulator, inlet temperature is 270 DEG C, outlet temperature 130
DEG C, feed rate 55rap/min, dry intraventricular pressure difference is 30~55Pa, obtains mist projection granulating powder, number 3#.
Embodiment 4
1,450.0g boehmite powder, 27.0g clay, 18.0g bentonite, 13.5g PVA, 4.5g polyacrylic acid are weighed
Ammonium, 9.0g HPMC, 4.5g aluminum magnesium silicate, 13.5g PEG, 4.5g MC, 4.5g PVP are weighed in proportion, be added 549.0g go from
Sub- water, heating water bath is to 80 DEG C and stirs 3h, is made into the stable dispersion slurries that solid content is 50%.
In terms of slurries gross mass, wherein boehmite powder accounts for 40.98%, and clay accounts for 2.46%, and bentonite accounts for 1.64%,
PVA accounts for 1.23%, and ammonium polyacrylate accounts for 0.41%, HPMC and accounts for 0.82%, and aluminum magnesium silicate, which accounts for 0.41%, PEG and accounts for 1.23%, MC, to be accounted for
0.41%, PVP account for 0.41%；
2, above-mentioned slurries are injected directly into air-flowing type sponging granulator, inlet temperature is 240 DEG C, outlet temperature 120
DEG C, feed rate 55rap/min, dry intraventricular pressure difference is 30~55Pa, obtains mist projection granulating powder, number 4#.
Embodiment 5
1, weigh 450.0g boehmite powder, 13.5g clay, 36.0g kaolin, 9.0g PVA, 13.5g silica solution,
13.5g HPMC, 4.5g PEG, 9.0g MC, 13.5g PVP, 9.0g naphthalene sulfonate D-425 are weighed in proportion, and 644.46g is added
Deionized water, heating water bath is to 80 DEG C and stirs 3h, is made into the stable dispersion slurries that solid content is 47%.
In terms of slurries gross mass, wherein boehmite powder accounts for 37.01%, and clay accounts for 1.11%, and kaolin accounts for 2.96%,
PVA accounts for 0.74%, and silica solution, which accounts for 1.11%, HPMC and accounts for 1.11%, PEG and account for 0.37%, MC and account for 0.74%, PVP, accounts for 1.11%, naphthalene
Sulfonate D-425 accounts for 0.74%；
2, above-mentioned slurries are injected directly into air-flowing type sponging granulator, inlet temperature is 250 DEG C, outlet temperature 130
DEG C, feed rate 55rap/min, dry intraventricular pressure difference is 30~55Pa, obtains mist projection granulating powder, number 5#.
Embodiment 6
1, weigh 450.0g boehmite powder, 13.5g clay, 36.0g kaolin, 9.0g PVA, 13.5g silica solution,
13.5g HPMC, 4.5g PEG, 9.0g MC, 13.5g PVP, 9.0g naphthalene sulfonate D-425 are weighed in proportion, and 644.46g is added
Deionized water, heating water bath is to 30 DEG C and stirs 1h, is made into the stable dispersion slurries that solid content is 47%.
In terms of slurries gross mass, wherein boehmite powder accounts for 37.01%, and clay accounts for 1.11%, and kaolin accounts for 2.96%,
PVA accounts for 0.74%, and silica solution, which accounts for 1.11%, HPMC and accounts for 1.11%, PEG and account for 0.37%, MC and account for 0.74%, PVP, accounts for 1.11%, naphthalene
Sulfonate D-425 accounts for 0.74%；
2, above-mentioned slurries are injected directly into air-flowing type sponging granulator, inlet temperature is 210 DEG C, outlet temperature 100
DEG C, feed rate 40rap/min, dry intraventricular pressure difference is 65Pa, obtains mist projection granulating powder, number 6#.
Mist projection granulating powder and the test of original powder partial size
Partial size test method: taking 4g powder to be put into 20ml graduated cylinder, and 15g deionized water is added, and is stirred with plastic dropper equal
It is even and take 3ml solution sample, each sample powder particle size is tested using laser particle size analyzer.
Test result is as follows shown in table 1 for 1 to 6 mist projection granulating powder of embodiment and the partial size of original powder.
1 embodiment of table, 1 to 6 mist projection granulating powder and original powder partial size test result
| Number | 1# | 2# | 3# | 4# | 5# | 6# | Original powder # |
| Partial size/μm | 127.496 | 138.438 | 187.287 | 153.504 | 146.359 | 73.479 | 10.086 |
As shown in Table 1,1#~5# boehmite powder through mist projection granulating of the present invention processing after partial size much higher than spray
10.086 μm of original powder partial size before mist, powder mobility greatly improves, and automatic moulding performance is remarkably reinforced.6# boehmite powder
Expect that atomizing granulating technology parameter does not limit in range in the present invention, though powder particle size is increased slightly compared with original powder partial size after spraying,
It is obvious to be far below 2~3 times of powder particle size obtained through preferably atomizing granulating technology parameter of the invention.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of Spray granulation method of boehmite powder, which comprises the following steps:
1) ingredient: in terms of slurries gross mass, by boehmite powder, sintering aid, binder, dispersing agent according to following quality point
Number is weighed: boehmite 35~50wt% of powder, 2.5~5.5wt% of sintering aid, 1.0~4.0wt% of binder, point
1.0~4.0wt% of powder, is added deionized water, and heating water bath simultaneously stirs the stable dispersion slurry for being made into that solid content is 38~55%
Liquid；
2) mist projection granulating: obtained slurries are directly sprayed in people's pelletizer, and control atomizing granulating technology parameter obtains being granulated powder.
2. a kind of Spray granulation method of boehmite powder as described in claim 1, which is characterized in that the sintering aid
For one of clay, bentonite, kaolin or a variety of.
3. a kind of Spray granulation method of boehmite powder as described in claim 1, which is characterized in that the binder is
One of polyvinyl alcohol (PVA), silica solution, ammonium polyacrylate, hydroxypropyl methyl cellulose (HPMC), aluminum magnesium silicate are more
Kind.
4. a kind of Spray granulation method of boehmite powder as described in claim 1, which is characterized in that the dispersing agent is
Polyethylene glycol (PEG), sodium carboxymethylcellulose (CMC-Na), methylcellulose (MC), polyvinylpyrrolidone (PVP), naphthalene sulphur
One of hydrochlorate D-425 or a variety of.
5. a kind of Spray granulation method of boehmite powder as described in claim 1, which is characterized in that with slurries gross mass
Meter, the mass fraction of the sintering aid each component are clay: 0.0~3.5wt%, bentonite: 0.0~3.0wt%, kaolinite
Soil: 0.0~4.0wt%
6. a kind of Spray granulation method of boehmite powder as described in claim 1, which is characterized in that with slurries gross mass
Meter, the mass fraction of the binder each component are polyvinyl alcohol (PVA): 0.0~1.5wt%, silica solution: 0.0~
1.5wt%, ammonium polyacrylate: 0.0~0.6wt%, hydroxypropyl methyl cellulose (HPMC): 0.0~1.8wt%, aluminum magnesium silicate:
0.0~0.8wt%.
7. a kind of Spray granulation method of boehmite powder as described in claim 1, which is characterized in that with slurries gross mass
Meter, the mass fraction of the dispersing agent each component are polyethylene glycol (PEG): 0.0~1.5wt%, sodium carboxymethylcellulose (CMC-
Na): 0.0~1.0wt%, methylcellulose (MC): 0.0~2.0wt%, polyvinylpyrrolidone (PVP): 0.0~
1.5wt%, naphthalene sulfonate D-425:0.0~1.0wt.
8. a kind of Spray granulation method of boehmite powder as described in claim 1, which is characterized in that the heating water bath
Temperature is 70~95 DEG C, and mixing time is 1~3h.
9. a kind of Spray granulation method of boehmite powder as described in claim 1, which is characterized in that the mist projection granulating
Machine is air-flowing type sponging granulator, and inlet temperature is 240~270 DEG C, and outlet temperature is 120~150 DEG C, and feed rate is
55rap/min, dry intraventricular pressure difference are 30~55Pa.
10. a kind of boehmite powder, which is characterized in that using the described in any item method preparations of the claims 1 to 9
It obtains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910752465.5A CN110368918A (en) | 2019-08-15 | 2019-08-15 | A kind of Spray granulation method of boehmite powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910752465.5A CN110368918A (en) | 2019-08-15 | 2019-08-15 | A kind of Spray granulation method of boehmite powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110368918A true CN110368918A (en) | 2019-10-25 |
Family
ID=68259382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910752465.5A Pending CN110368918A (en) | 2019-08-15 | 2019-08-15 | A kind of Spray granulation method of boehmite powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110368918A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111470522A (en) * | 2020-03-31 | 2020-07-31 | 洛阳中超新材料股份有限公司 | Spherical alumina and preparation method and application thereof |
| CN116265108A (en) * | 2021-12-17 | 2023-06-20 | 中国石油天然气股份有限公司 | Preparation method of catalytic cracking catalyst for producing more gasoline |
| CN116265107A (en) * | 2021-12-17 | 2023-06-20 | 中国石油天然气股份有限公司 | Preparation method of catalytic cracking catalyst for producing diesel oil in large quantity |
| CN116265106A (en) * | 2021-12-17 | 2023-06-20 | 中国石油天然气股份有限公司 | Preparation method of catalytic cracking catalyst for high yield of low carbon olefin |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006079208A1 (en) * | 2005-01-26 | 2006-08-03 | Global Synfrac Inc. | Lightweight proppant and method of making same |
| CN102188989A (en) * | 2011-03-24 | 2011-09-21 | 中国天辰工程有限公司 | Fluidized bed catalyst and preparation method thereof |
| WO2013123296A1 (en) * | 2012-02-17 | 2013-08-22 | Kior, Inc. | Catalyst compositions comprising in situ grown zeolites on clay matrixes exhibiting hierarchical pore structures |
| CN103920431A (en) * | 2014-04-24 | 2014-07-16 | 上海仙佳化工有限公司 | Microsphere fluidizing reagent for start debugging of fluidized bed reactor and preparation method of microsphere fluidizing reagent |
| CN104667824A (en) * | 2013-11-26 | 2015-06-03 | 宋永法 | Spray granulation method of silicon carbide powder |
| CN105503191A (en) * | 2015-12-15 | 2016-04-20 | 中国兵器科学研究院宁波分院 | Method for preparing boron carbide spray granulation powder |
| CN106475023A (en) * | 2016-11-15 | 2017-03-08 | 中国海洋石油总公司 | A kind of preparation method of big pore volume aluminum oxide micro-sphere |
| CN106854081A (en) * | 2015-12-08 | 2017-06-16 | 尤世元 | A kind of Spray granulation method of silicon carbide powder |
| CN106904948A (en) * | 2017-02-28 | 2017-06-30 | 山东鲲鹏新材料科技股份有限公司 | A kind of quasi- nano wearproof alpha-aluminium oxide ball preparation method |
| CN108083810A (en) * | 2016-11-20 | 2018-05-29 | 刘明明 | A kind of Spray granulation method of silicon carbide powder |
| CN108218433A (en) * | 2016-12-13 | 2018-06-29 | 刘明明 | A kind of Spray granulation method of silicon carbide powder |
| CN108358613A (en) * | 2018-01-31 | 2018-08-03 | 武汉理工大学 | A kind of compound hot spray powder of alundum (Al2O3)/TiO 2 precursor and preparation method thereof |
| CN109111232A (en) * | 2017-06-23 | 2019-01-01 | 刘明明 | A kind of Spray granulation method of silicon carbide powder |
-
2019
- 2019-08-15 CN CN201910752465.5A patent/CN110368918A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006079208A1 (en) * | 2005-01-26 | 2006-08-03 | Global Synfrac Inc. | Lightweight proppant and method of making same |
| CN102188989A (en) * | 2011-03-24 | 2011-09-21 | 中国天辰工程有限公司 | Fluidized bed catalyst and preparation method thereof |
| WO2013123296A1 (en) * | 2012-02-17 | 2013-08-22 | Kior, Inc. | Catalyst compositions comprising in situ grown zeolites on clay matrixes exhibiting hierarchical pore structures |
| CN104667824A (en) * | 2013-11-26 | 2015-06-03 | 宋永法 | Spray granulation method of silicon carbide powder |
| CN103920431A (en) * | 2014-04-24 | 2014-07-16 | 上海仙佳化工有限公司 | Microsphere fluidizing reagent for start debugging of fluidized bed reactor and preparation method of microsphere fluidizing reagent |
| CN106854081A (en) * | 2015-12-08 | 2017-06-16 | 尤世元 | A kind of Spray granulation method of silicon carbide powder |
| CN105503191A (en) * | 2015-12-15 | 2016-04-20 | 中国兵器科学研究院宁波分院 | Method for preparing boron carbide spray granulation powder |
| CN106475023A (en) * | 2016-11-15 | 2017-03-08 | 中国海洋石油总公司 | A kind of preparation method of big pore volume aluminum oxide micro-sphere |
| CN108083810A (en) * | 2016-11-20 | 2018-05-29 | 刘明明 | A kind of Spray granulation method of silicon carbide powder |
| CN108218433A (en) * | 2016-12-13 | 2018-06-29 | 刘明明 | A kind of Spray granulation method of silicon carbide powder |
| CN106904948A (en) * | 2017-02-28 | 2017-06-30 | 山东鲲鹏新材料科技股份有限公司 | A kind of quasi- nano wearproof alpha-aluminium oxide ball preparation method |
| CN109111232A (en) * | 2017-06-23 | 2019-01-01 | 刘明明 | A kind of Spray granulation method of silicon carbide powder |
| CN108358613A (en) * | 2018-01-31 | 2018-08-03 | 武汉理工大学 | A kind of compound hot spray powder of alundum (Al2O3)/TiO 2 precursor and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| ABHISEK CHOUDHARY等: ""Experimental Investigation on Flowability and Compaction Behavior of Spray Granulated Submicron Alumina Granules"", 《ISRN CERAMICS》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111470522A (en) * | 2020-03-31 | 2020-07-31 | 洛阳中超新材料股份有限公司 | Spherical alumina and preparation method and application thereof |
| CN111470522B (en) * | 2020-03-31 | 2021-12-07 | 洛阳中超新材料股份有限公司 | Spherical alumina and preparation method and application thereof |
| CN116265108A (en) * | 2021-12-17 | 2023-06-20 | 中国石油天然气股份有限公司 | Preparation method of catalytic cracking catalyst for producing more gasoline |
| CN116265107A (en) * | 2021-12-17 | 2023-06-20 | 中国石油天然气股份有限公司 | Preparation method of catalytic cracking catalyst for producing diesel oil in large quantity |
| CN116265106A (en) * | 2021-12-17 | 2023-06-20 | 中国石油天然气股份有限公司 | Preparation method of catalytic cracking catalyst for high yield of low carbon olefin |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110368918A (en) | A kind of Spray granulation method of boehmite powder | |
| CN104923801B (en) | A kind of method that mass prepares nano-silver powder | |
| CN106179264B (en) | A kind of resin base meso-porous nano composite material and preparation method and application | |
| CN102151527B (en) | Preparation method of monodisperse silicon oxide magnetic microspheres used for DNA purification and protein separation | |
| CN103623720B (en) | A kind of differential preparing nano-fluid adds aerosol dispersion method and apparatus | |
| CN101966994B (en) | Preparation method of porous silicon dioxide hollow microspheres | |
| CN109745870A (en) | A kind of preparation method of porous metal film | |
| CN103270014B (en) | The manufacture method of tertiary amine | |
| CN103100426B (en) | Preparation method of alumina carrier | |
| CN110282642B (en) | Gamma-alumina microsphere and preparation method thereof | |
| CN106946278A (en) | A kind of boehmite and preparation method thereof | |
| CN104667824A (en) | Spray granulation method of silicon carbide powder | |
| CN106517219B (en) | Airsetting glueballs and preparation method thereof | |
| CN109454752A (en) | A kind of ceramic microsphere preparation method and its device | |
| CN102219250B (en) | Method for preparing nanometer barium sulfate grains | |
| CN114000031B (en) | Porous conductive ceramic material for heating and preparation method thereof | |
| CN108144602B (en) | Preparation method of high-wear-resistance micron noble metal loaded silicon oxide carrier catalyst | |
| US20170173567A1 (en) | Method of preparing selective catalytic reduction composite catalyst | |
| CN103288093A (en) | Method for preparing hollow silicon oxide microspheres by spray drying | |
| CN102881884A (en) | Manufacturing process for Al-clad spherical nickel-cobalt-manganese ternary material | |
| CN103360529A (en) | Controllable synthetic method of micro-sized mono-disperse polystyrene microsphere | |
| CN103041868B (en) | Preparation method of spherical catalyst carrier | |
| CN103041837B (en) | A kind of preparation method of spherical hydrogenation catalyst | |
| CN103272543B (en) | Method for preparing hollow silicon ball by self-templating method | |
| CN102553502A (en) | Preparation device and preparation method for electronic ink microcapsule |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191025 |