CN107758677A - A kind of FCC catalyst kleit preparation method - Google Patents
A kind of FCC catalyst kleit preparation method Download PDFInfo
- Publication number
- CN107758677A CN107758677A CN201711175638.9A CN201711175638A CN107758677A CN 107758677 A CN107758677 A CN 107758677A CN 201711175638 A CN201711175638 A CN 201711175638A CN 107758677 A CN107758677 A CN 107758677A
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- kaolin
- fcc catalyst
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- dispersant
- kleit preparation
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/20—Silicates
- C01B33/26—Aluminium-containing silicates, i.e. silico-aluminates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Catalysts (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention discloses a kind of FCC catalyst kleit preparation method, utilize disintegrating machine, the direct Ultrafine Grinding stripping of the kaolin of 325 mesh is more than or equal to the 82% of product gross mass into the particle less than 2 μm, kaolin utilization rate is high, reaches more than 80% with kaolinic yield using the autochthonal production FCC catalyst in 325 height of eye ridges by the method.The property indices for being used for FCC catalyst with kaolin produced by the present invention simultaneously reach requirement.
Description
Technical field
The present invention relates to the manufacture field of nonmetallic ore, more particularly to a kind of FCC catalyst kleit preparation method.
Background technology
Cracking catalyst is refined oil by major ingredient or full carclazyte of kaolin, it has also become China and foreign countries' oil refining, the main body of petrochemical industry are urged
Agent.On the one hand it is to be used as binder-type catalyst carrier that kaolin, which is used for FCC catalyst, predominantly FCC catalyst carries
Accelerator for physical properties such as preferable abrasion resistance, moderate bulk densities or as active component；On the other hand it is system
Standby full white-clay type catalyst, i.e., Direct Hydrothermal crystallization grows Y type equimolecular sieve catalysts on kaolin microsphere.The technology
Because special preparation technology makes the activity of this kind of catalyst, stability, preventing from heavy metal performance, slag oil cracking performance, gasoline choosing
Select performance and abrasion resistance, regenerability etc. all very well, processing process is simple, is rising FCC catalysis
Agent.
It is different yet with the cause condition in various regions mineral deposit although China's kaolin resource enriches, make the height of different sources
Ridge soil soil is widely different in composition, structure, physicochemical property etc., and application effect is also different, actually being capable of catalytic cracking preparation
, mainly Suzhou Yang Shankuang and Period In Maoming ore deposit few with kaolinic kaolin mineral resources into catalyst.
Current domestic catalyst kleit preparation method, mainly including slurrying, classification, bleaching iron removaling, dehydration, do
The steps such as dry, crushing.The method of classification is mainly utilized as hydrocyclone or horizontal spiral centrifuge is carried out, and extraction is less than 2 μm
Kaolin ore as catalyst kaolin.Because 325 mesh kaolin less than 2 μm of contents only have 30% or so, final catalysis is split
Change the yield of catalyst kaolin product less than 30%, kaolin utilization ratio is low.Therefore how rare height is efficiently utilized
Ridge soil resource is crucial.
The content of the invention
It is an object of the invention to provide a kind of FCC catalyst kleit preparation method, kaolinic utilization is improved
Rate, improve yield.
Technical problem solved by the invention can be realized using following technical scheme：
A kind of FCC catalyst kleit preparation method, it is characterized in that：Comprise the following steps：
Step 1：Slurrying, smashes slurry by 325 mesh kaolin, water and dispersant pulp density is made and exist in 10.0 ~ 20.0%, pH values
Ore pulp between 5.0 ~ 6.5；
Step 2：Iron removal by magnetic separation, it is high in magnetic field intensity 8000-10000 that the kaolin ore slurry made is entered into high gradient magnetic separator
This, 6.0 ~ 15.0m of flow3Iron removal by magnetic separation is carried out under/h, obtains magnetic concentrate；
Step 3：Chemical bleaching iron removaling, by magnetic concentrate add the concentrated sulfuric acid in acid condition, pH values between 2.0 ~ 3.0,
Add reducing agent to be bleached, complexing agent is added after 15 ~ 30 minutes, by the kaolinite Jing Guo chemical bleaching iron removaling after 30 ~ 60 minutes
Soil bleaching ore pulp adds water to carry out 2 ~ 3 dish from thickening and washing, obtains concentration as 20.0 ~ 30.0% under the conditions of pH3.0 ~ 5.0
Bleaching iron removaling ore pulp；
Step 4：Ultrafine Grinding is shelled, and bleaching iron removaling ore pulp is added into dispersant after three sections of mill strippings, the granule content less than 2 μm
More than or equal to the 82.0% of product gross mass, particle diameter reaches D（v.0.5）≤4.0(um)；
Step 5：Dehydration, the ore pulp after Ultrafine Grinding is shelled carry out filter-press dehydration, filter cake are made, and control the moisture of filter cake；
Step 6：Dry, filter cake is dried, and control certain moisture；
Step 7：Crush, dried filter cake is crushed, that is, FCC catalyst kaolin is made.
Preferably, kaolinite content >=80%, Al in 325 mesh kaolin described in step 12O3Content be 37.00 ~
39.0%, Fe2O3Content≤1.00%, K2O+Na2O content≤0.65%, granule content >=product gross mass less than 2 μm
30.0%, 325 mesh screen residue≤0.1%, Free quartz content≤3.60%.
Preferably, dispersant described in step 1 is calgon, and dosage is the 0.10 ~ 0.25% of kaolin dry measure.
Preferably, reducing agent described in step 3 is sodium dithionite, and dosage is the 0.5 ~ 1.5% of kaolin dry measure.
Preferably, complexing agent described in step 3 is oxalic acid, and dosage is the 0.25 ~ 0.75% of kaolin dry measure.
Preferably, dispersant described in step 4 is calgon, in three sections of mill stripping processes dispersant dosage and height
The accounting of ridge soil dry measure is one section 0.10 ~ 0.20%, two section 0.05 ~ 0.15%, three section 0.05 ~ 0.10%.
Preferably, the stripping of Ultrafine Grinding described in step 4 equipment is BP500 disintegrating machines, and treating capacity is 1.0 ~ 2.5m3/h。
Present invention utilizes disintegrating machine, can be more than the direct Ultrafine Grinding stripping of the kaolin of 325 mesh into the particle less than 2 μm
Or 82% equal to product gross mass, kaolin utilization rate is high, and the autochthonal production FCC catalyst in 325 height of eye ridges is utilized by the method
Reach more than 80% with kaolinic yield.The properties for being used for FCC catalyst with kaolin produced by the present invention simultaneously refer to
Mark reaches requirement.
Embodiment
The present invention is described in further detail with reference to embodiment, but the implementation of the present invention is not limited to this.
A kind of FCC catalyst kleit preparation method, it is made up of successively the following steps：
（1）Slurrying：By 325 mesh kaolin, water and dispersant smash slurry be made pulp density 10.0 ~ 20.0%, pH values 5.0 ~
Ore pulp between 6.5；Kaolinite content >=80%, Al in 325 described mesh kaolin2O3Content is 37.00 ~ 39.0%, Fe2O3
Content≤1.00%, K2O+Na2O content≤0.65%, 30.0% of granule content >=product gross mass less than 2 μm, 325 mesh sieves
Remaining≤0.1%, Free quartz content≤3.60%.The dispersant is calgon, dosage for kaolin dry measure 0.10 ~
0.25%；
（2）Iron removal by magnetic separation：The kaolin ore slurry made is entered into high gradient magnetic separator in magnetic field intensity 8000-10000 Gausses, stream
Measure 6.0 ~ 15.0m3Iron removal by magnetic separation is carried out under/h, obtains magnetic concentrate；
（3）Chemical bleaching iron removaling：Magnetic concentrate is added into the concentrated sulfuric acid in acid condition, pH values add between 2.0 ~ 3.0
Reducing agent is bleached, and complexing agent is added after 15 ~ 30 minutes, floats the kaolin Jing Guo chemical bleaching iron removaling after 30 ~ 60 minutes
White ore pulp adds water to carry out 2 ~ 3 dish from thickening and washing, obtains the drift that concentration is 20.0 ~ 30.0% under the conditions of pH3.0 ~ 5.0
White iron removaling ore pulp；The reducing agent is sodium dithionite, and dosage is the 0.5 ~ 1.5% of kaolin dry measure；The complexing agent is grass
Acid, dosage are the 0.25 ~ 0.75% of kaolin dry measure；
（4）Ultrafine Grinding is shelled：Bleaching iron removaling ore pulp is added into dispersant after three sections of mill strippings, the granule content less than 2 μm is more than
Or 82.0% equal to product gross mass, particle diameter reaches D（v.0.5）≤4.0(um)；The dispersant is calgon, three
Section mill stripping process in dispersant dosage and kaolin dry measure accounting for one section 0.10 ~ 0.20%, two section 0.05 ~ 0.15%, three
Section 0.05 ~ 0.10%.The Ultrafine Grinding stripping equipment is BP500 disintegrating machines, and treating capacity is 1.0 ~ 2.5m3/h；
（5）Dehydration：Ore pulp after Ultrafine Grinding is shelled carries out filter-press dehydration, filter cake is made, and control the moisture of filter cake；
（6）Dry：Filter cake is dried, and controls certain moisture；
（7）Crush：Dried filter cake is crushed, that is, the kaolin for preparing FCC catalyst is made.
It is described above, only it is present pre-ferred embodiments, is not intended to limit the scope of the present invention, therefore
Any subtle modifications, equivalent variations and modifications that every technical spirit according to the present invention is made to above example, still fall within
Protection scope of the present invention.
Claims (7)
1. a kind of FCC catalyst kleit preparation method, it is characterized in that：Comprise the following steps：
Step 1：Slurrying, smashes slurry by 325 mesh kaolin, water and dispersant pulp density is made and exist in 10.0 ~ 20.0%, pH values
Ore pulp between 5.0 ~ 6.5；
Step 2：Iron removal by magnetic separation, it is high in magnetic field intensity 8000-10000 that the kaolin ore slurry made is entered into high gradient magnetic separator
This, 6.0 ~ 15.0m of flow3Iron removal by magnetic separation is carried out under/h, obtains magnetic concentrate；
Step 3：Chemical bleaching iron removaling, by magnetic concentrate add the concentrated sulfuric acid in acid condition, pH values between 2.0 ~ 3.0,
Add reducing agent to be bleached, complexing agent is added after 15 ~ 30 minutes, by the kaolinite Jing Guo chemical bleaching iron removaling after 30 ~ 60 minutes
Soil bleaching ore pulp adds water to carry out 2 ~ 3 dish from thickening and washing, obtains concentration as 20.0 ~ 30.0% under the conditions of pH3.0 ~ 5.0
Bleaching iron removaling ore pulp；
Step 4：Ultrafine Grinding is shelled, and bleaching iron removaling ore pulp is added into dispersant after three sections of mill strippings, the granule content less than 2 μm
More than or equal to the 82.0% of product gross mass, particle diameter reaches D（v.0.5）≤4.0(um)；
Step 5：Dehydration, the ore pulp after Ultrafine Grinding is shelled carry out filter-press dehydration, filter cake are made, and control the moisture of filter cake；
Step 6：Dry, filter cake is dried, and control certain moisture；
Step 7：Crush, dried filter cake is crushed, that is, FCC catalyst kaolin is made.
A kind of 2. FCC catalyst kleit preparation method according to claim 1, it is characterised in that：In step 1
Kaolinite content >=80%, Al in 325 described mesh kaolin2O3Content is 37.00 ~ 39.0%, Fe2O3Content≤1.00%, K2O+
Na2O content≤0.65%, 30.0% of granule content >=product gross mass less than 2 μm, 325 mesh screen residue≤0.1%, dissociate stone
English content≤3.60%.
A kind of 3. FCC catalyst kleit preparation method according to claim 1, it is characterised in that：In step 1
The dispersant is calgon, and dosage is the 0.10 ~ 0.25% of kaolin dry measure.
A kind of 4. FCC catalyst kleit preparation method according to claim 1, it is characterised in that：In step 3
The reducing agent is sodium dithionite, and dosage is the 0.5 ~ 1.5% of kaolin dry measure.
A kind of 5. FCC catalyst kleit preparation method according to claim 1, it is characterised in that：In step 3
The complexing agent is oxalic acid, and dosage is the 0.25 ~ 0.75% of kaolin dry measure.
A kind of 6. FCC catalyst kleit preparation method according to claim 1, it is characterised in that：In step 4
The dispersant is calgon, in three sections of mill stripping processes dispersant dosage and the accounting of kaolin dry measure be one section 0.10
~ 0.20%, two section 0.05 ~ 0.15%, three section 0.05 ~ 0.10%.
A kind of 7. FCC catalyst kleit preparation method according to claim 1, it is characterised in that：In step 4
The Ultrafine Grinding stripping equipment is BP500 disintegrating machines, and treating capacity is 1.0 ~ 2.5m3/h。
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| CN201711175638.9A CN107758677A (en) | 2017-11-22 | 2017-11-22 | A kind of FCC catalyst kleit preparation method |
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| CN201711175638.9A CN107758677A (en) | 2017-11-22 | 2017-11-22 | A kind of FCC catalyst kleit preparation method |
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| CN107758677A true CN107758677A (en) | 2018-03-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113683093A (en) * | 2021-08-20 | 2021-11-23 | 中国高岭土有限公司 | Preparation method of kaolin for cracking catalyst |
| CN115365003A (en) * | 2022-07-29 | 2022-11-22 | 江西源昇苏瑞新材料科技有限公司 | Preparation method of high-whiteness superfine kaolin powder |
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| CN1613818A (en) * | 2004-11-09 | 2005-05-11 | 茂名高岭科技有限公司 | Production for superfine kaolin |
| CN101863487A (en) * | 2010-05-28 | 2010-10-20 | 茂名石化矿业有限公司 | Production method of superfine kaolin |
| CN102092724A (en) * | 2010-11-24 | 2011-06-15 | 湖南宝山高岭土科技开发有限公司 | Production method of modified kaolin |
| CN102976348A (en) * | 2012-12-17 | 2013-03-20 | 茂名市茂群高岭土有限公司 | Preparation method of kaolin having high colloid index |
| CN103086390A (en) * | 2012-11-16 | 2013-05-08 | 中国地质大学（武汉） | Technique for efficiently removing iron from kaolin |
| CN104030307A (en) * | 2014-05-16 | 2014-09-10 | 茂名市茂群高岭土有限公司 | Kaolin for preparing heavy-oil catalytic cracking catalyst |
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2017
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113683093A (en) * | 2021-08-20 | 2021-11-23 | 中国高岭土有限公司 | Preparation method of kaolin for cracking catalyst |
| CN115365003A (en) * | 2022-07-29 | 2022-11-22 | 江西源昇苏瑞新材料科技有限公司 | Preparation method of high-whiteness superfine kaolin powder |
| CN115365003B (en) * | 2022-07-29 | 2024-07-26 | 江西源昇苏瑞新材料科技有限公司 | Preparation method of high-whiteness superfine kaolin powder |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 364000 (Longyan economic and Technological Development Zone A), No. 260, state capital building, No. 260, Longyan Avenue, Xi Po Town, Xinluo District, Xinluo District, Fujian Applicant after: Longyan kaolin Limited by Share Ltd Address before: 364000 (Longyan economic and Technological Development Zone A), No. 260, state capital building, No. 260, Longyan Avenue, Xi Po Town, Xinluo District, Xinluo District, Fujian Applicant before: Longyan Kaolin Clay Co., Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180306 |