CN85100161A - Carbonating technology (CO 2Method) produces pseudo-boehmite - Google Patents

Carbonating technology (CO 2Method) produces pseudo-boehmite Download PDF

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Publication number
CN85100161A
CN85100161A CN198585100161A CN85100161A CN85100161A CN 85100161 A CN85100161 A CN 85100161A CN 198585100161 A CN198585100161 A CN 198585100161A CN 85100161 A CN85100161 A CN 85100161A CN 85100161 A CN85100161 A CN 85100161A
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China
Prior art keywords
glue
gram
carbonic acid
boehmite
hour
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CN198585100161A
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Chinese (zh)
Inventor
侯春楼
田庚有
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SHANDONG ALUMINUM PLANT
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SHANDONG ALUMINUM PLANT
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Priority to CN198585100161A priority Critical patent/CN85100161A/en
Publication of CN85100161A publication Critical patent/CN85100161A/en
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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/14—Aluminium oxide or hydroxide from alkali metal aluminates
    • C01F7/141—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by neutralisation with an acidic agent
    • C01F7/142—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by neutralisation with an acidic agent with carbon dioxide
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/141—Feedstock

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

Carbonating technology (CO 2Method) produces pseudo-boehmite.The present invention belongs to the processing method of producing pseudo-boehmite, and its major technique feature is the process characteristic that combined alkali-lime sinter process is produced aluminum oxide, is raw material with product-industrial sodium aluminate solution in the middle of it, uses high concentration CO 2Gas is made precipitation agent, carbonic acid changes into glue and obtains pseudo-boehmite fast under low-temperature and low-concentration, carbonic acid changes into the glue process can be interrupted and carry out continuously, and it is simple that this method has flow process, and raw material is convenient, the output height, advantages such as cost is low, and is free from environmental pollution, products obtained therefrom crystalline phase purity height, peptization performance is good, is suitable for doing the raw material of binding agent and siccative, scavenging agent, catalyzer and support of the catalyst.

Description

Carbonating technology (CO <base:Sub xmlns:base="http://www.sipo.gov.cn/XMLSchema/base">2</base:Sub>Method) produces pseudo-boehmite
The present invention belongs to the processing method of producing pseudo-boehmite.
Produce the thin aluminium stone of plan at home and mainly adopt industrial Al(OH) 3Reppd method.As with industrial Al(OH) 3Reaction generation sodium aluminate solution in the adding caustic solution adds high purity acid then or the acid-salt neutralization precipitation obtains pseudo-boehmite.What the required sodium aluminate solution of this method was walked is the road of retrogression of process for making alumina, and the Production Flow Chart complexity needs the industrial chemicals of corrosion protection equipment and consume expensive, the difficult pollution of avoiding environment, and industrial scale also is subjected to certain restriction.In the relevant technologies documents and materials, it is a lot of to briefly introduce external preparation boehmite method, and report detailed content or technological parameter are few.The pseudo-boehmite that China is Sb from external import code name is that the organoaluminum hydrolysis forms, and is the product of paying of other productions.
The objective of the invention is for a kind of industrial Al(OH that neither directly uses is provided) 3Make raw material, also consumption acids alkalization worker material not, and can simplify flow sheet equipment, reduce environmental pollution, the novel method of easy realization of large-scale production pseudo-boehmite.Namely produce the process characteristic of aluminium oxide in conjunction with alkali-lime sinter process, utilize its middle product-industrial sodium aluminate solution and high concentration CO 2Gas is made respectively raw material and precipitating reagent, adopts carbonating technology (CO 2Method) produces boehmite.
Carbonating technology (CO of the present invention 2Method) produce dilution and the cooling that its technological process of pseudo-boehmite comprises industrial sodium aluminate solution, filtration, purification, become glue and aging, separate and operations such as washing, oven dry and pulverizing, key is that carbonic acid changes into glue.Each operation process and technical parameter thereof are described in detail as follows: at first with Al 2O 3Concentration 70～130 grams per liters, temperature 70～
100 ℃ industrial sodium aluminate solution adds distilled water or deionized water dilution and is cooled to Al 2O 3Concentration 20～60 grams per liters, 15～45 ℃ of temperature will dilute then cooling solution purify after filtration remove Al(OH) 3Residue passes into concentration and is 30～15% CO again 2Gas carries out quick carbonic acid and changes into glue.Carbonic acid changes into glue and is divided into interruption and continuous dual mode.When adopting interruption carbonic acid to change into glue, logical CO 2Gas velocity 2～8 gram CO 2/ gram Al 2O 3Hour, 10～30 minutes time.When adopting continuous carbonation to become glue, logical CO 2Gas velocity 1～6 gram CO 2/ gram Al 2O 3Hour, the carbonation time is 30～90 minutes.Become the later slurries of glue then to be heated to 70～100 ℃ of temperature, aging 1～6 hour of insulation, or directly carry out in washing process, being worn out after the liquid-solid separation earlier.Separate the solid that obtains and wash 1～4 time with distilled water or the deionized water of 70～100 ℃ of temperature, cleaning solution partly returns is used as the dilution industrial sodium aluminate solution.Separate mother liquor and remain washings and send the alumina producing flow process back to.To wash at last good wet stock dries routinely and processes with grinding mode and obtain the powdery boehmite.
Carbonating technology (CO of the present invention 2Method) with other conventional produce pseudo-boehmite methods compare have process simplification, raw material is convenient, do not need specific installation and do not waste industrial chemicals, waste residue, waste liquid can Returning utilizations, and be free from environmental pollution, superiority such as easy realization of large-scale production.Products obtained therefrom crystalline phase purity height, peptization performance is good, is suitable for doing the raw material of binding agent and scavenging agent, siccative, catalyzer and carrier.In addition, production cost is also lower, and the selling price of dispatching from the factory is about 60% of pseudo-boehmite that the import code name is Sb or domestic other relevant manufacturers.This carbonating technology (CO 2Method) method of production pseudo-boehmite is a domestic initiation, also has more originality and superiority in some aspects more abroad.
Accompanying drawing is the specific embodiment exemplary flow, and accompanying drawing is described in detail as follows: at first with the industrial sodium aluminate solution (Al of storage tank in 1. 2O 3Concentration 90～100 grams per liters, 80～90 ℃ of temperature) be transported to dilution trap 2. in, add water (distilled water or deionized water or return washings) dilution
To Al 2O 3Concentration 35～45 grams per liters are cooled to 25～35 ℃ of dilute solution temperature at dilution trap outer wall trickle 2., dilute then cooling solution through bag filter 3. purify remove Al(OH) 3Residue, enter again carbonic acid change into the glue groove 4. in the concentration of 5. 6. coming out with flowmeter through moisture trap be 35～45% CO 2Gas is becoming the glue groove to be reacted into rapidly glue in 4..When adopt being interrupted carbonic acid and changing into glue, solution from become glue groove top 4. enter (solution amount be cell body long-pending 0.5～0.7), CO 2Gas then passes into from the bottom, and the slurries behind the one-tenth glue are emitted from the lower end sidepiece, is interrupted the logical CO of carbonating 2Gas velocity is 3.5～5.5 gram CO 2/ gram Al 2O 3Hour, 15～25 minutes time.When adopting continuous carbonation to become glue, beginning becomes glue by being interrupted the carbonating mode earlier, and slurries are not emitted, then with solution and CO 2Gas from becoming glue groove bottom 4. to enter continuously, is overflowed by the top behind the slurries tankful simultaneously continuously, and continuous carbonation leads to CO 2Gas velocity is 2～4 gram CO 2/ gram Al 2O 3Hour, solution is 60～80 minutes time of staying in groove.7. the slurries that become glue to emit later on are transported to ageing tank, to 85～95 ℃ of temperature, aging 3～5 hours, 8. the entrance pressure filter separated and washs again with Steam Heating, or aging in mother liquor and after directly 8. the entrance pressure filter carries out liquid-solid separation, in washing process, worn out.Separating the solid obtain is that 85～95 ℃ distilled water or deionized water wash 2～3 time with temperature at filter press in 8. still, the cleaning solution some turns back to dilution trap and rushes rare water in 2., separate mother liquor and remaining cleaning solution and all send the alumina producing adjustment tank back to 9., the wet cake of 8. being unloaded down by filter press is 2.5～3.5 kilograms per centimeter at steam pressure 2Dryer pulverize by 60 orders through Universalpulverizer (11) after the drying in 10., enter at last dry powder finished bin (12) and pack.

Claims (7)

1, a kind ofly utilizes the industrial sodium aluminate solution in the alumina producing to change into the process that glue is produced boehmite through carbonic acid, it is characterized in that Al 2O 3Concentration 70～130 grams per liters, the industrial sodium aluminate solution that temperature is 70～100 ℃ add distilled water or deionized water dilution and are cooled to Al 2O 3Concentration 20～60 grams per liters, 15～45 ℃ of temperature will be diluted then cooling solution and be purified after filtration and remove Al (OH) 3Residue passes into concentration and is 30～45% CO again 2Gas carries out quick carbonic acid and changes into glue, and carbonic acid changes into glue and is divided into interruption and continuous dual mode, when adopting interruption carbonic acid to change into glue, leads to CO 2Gas velocity 2～8 gram CO 2/ gram Al 2O 3Hour, 10～30 minutes time, when adopting continuous carbonation to become glue, logical CO 2Gas velocity 1～6 gram CO 2/ gram Al 2O 3Hour, the carbonation time is 30～90 minutes, become the later slurries of glue then to be heated to 70～100 ℃ of temperature, aging 1～6 hour of insulation or elder generation directly carry out being worn out in washing process after the liquid-solid separation, separating the solid that obtains washs 1～4 time with distilled water or the deionized water of 70～100 ℃ of temperature, cleaning solution partly returns is used as the dilution industrial sodium aluminate solution, separate mother liquor and the residue cleaning solution is sent the alumina producing flow process back to, will wash at last good wet stock and dry routinely with the grinding mode processing and obtain the powdery boehmite.
2, in accordance with the method for claim 1, the cooling temperature that it is characterized in that said industrial sodium aluminate solution is 20～35 ℃.
3, according to claim 1,2 described methods, when it is characterized in that said interruption carbonic acid changes into glue, CO 2The speed of passing into is 3.5～5.5 gram CO 2/ gram Al 2O 3Hour.
4, according to claim 1,2 described methods, when it is characterized in that said continuous carbonation becomes glue, CO 2The speed of passing into is 2～4 gram CO 2/ gram Al 2O 3Hour.
5,, it is characterized in that said one-tenth glue rear slurry digestion time is 3～5 hours according to claim 1,2 described methods.
6, according to claim 1,2 described methods, when it is characterized in that said interruption carbonic acid changes into glue, CO 2The speed of passing into is 3.5～5.5 gram CO 2/ gram Al 2O 3Hour, said one-tenth glue rear slurry ageing time is 3～5 hours.
7, according to claim 1,2 described methods, when it is characterized in that said continuous carbonation becomes glue, CO 2The speed of passing into is 2～4 gram CO 2/ gram Al 2O 3Hour, the ageing time behind the said one-tenth glue is 3～5 hours.
CN198585100161A 1985-04-01 1985-04-01 Carbonating technology (CO 2Method) produces pseudo-boehmite Pending CN85100161A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001026805A1 (en) * 1999-10-14 2001-04-19 China Petrochemical Corporation Catalyst for hydrorefining distillate oil, its carrier and preparation thereof
CN1113037C (en) * 2000-11-01 2003-07-02 中国铝业股份有限公司 Method for preparing super fine aluminium hydroxide
CN101665261B (en) * 2009-10-21 2011-10-26 中国铝业股份有限公司 Technology for preparing pseudo-boehmite by sodium bicarbonate neutralization method
CN103449485A (en) * 2013-08-23 2013-12-18 中国铝业股份有限公司 Method for continuously producing pseudoboehmite by using ejector
CN103449484A (en) * 2013-08-23 2013-12-18 中国铝业股份有限公司 Method for continuously producing pseudoboehmite
CN105347374A (en) * 2015-11-20 2016-02-24 中石化催化剂（北京）有限公司 Production method of pseudo-boehmite
CN106044815A (en) * 2016-07-18 2016-10-26 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 Gibbsite and preparation method thereof
CN106315642A (en) * 2015-06-26 2017-01-11 中国石油化工股份有限公司 Preparation method for pseudo-boehmite and preparation method for gamma-alumina
CN111592022A (en) * 2020-04-20 2020-08-28 中铝山东新材料有限公司 Method for producing pseudo-boehmite
CN116726919A (en) * 2023-05-22 2023-09-12 大连瑞克科技股份有限公司 Modified carrier of catalyst for synthesizing ethylene oxide by oxidizing ethylene and preparation method thereof

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001026805A1 (en) * 1999-10-14 2001-04-19 China Petrochemical Corporation Catalyst for hydrorefining distillate oil, its carrier and preparation thereof
US6518219B1 (en) 1999-10-14 2003-02-11 China Petrochemical Corporation Catalyst for hydrorefining fraction oils, its carrier and preparation
CN1113037C (en) * 2000-11-01 2003-07-02 中国铝业股份有限公司 Method for preparing super fine aluminium hydroxide
CN101665261B (en) * 2009-10-21 2011-10-26 中国铝业股份有限公司 Technology for preparing pseudo-boehmite by sodium bicarbonate neutralization method
CN103449484B (en) * 2013-08-23 2015-07-08 中国铝业股份有限公司 Method for continuously producing pseudoboehmite
CN103449484A (en) * 2013-08-23 2013-12-18 中国铝业股份有限公司 Method for continuously producing pseudoboehmite
CN103449485A (en) * 2013-08-23 2013-12-18 中国铝业股份有限公司 Method for continuously producing pseudoboehmite by using ejector
CN103449485B (en) * 2013-08-23 2015-09-02 中国铝业股份有限公司 A kind of method utilizing ejector continuous seepage pseudo-boehmite
CN106315642A (en) * 2015-06-26 2017-01-11 中国石油化工股份有限公司 Preparation method for pseudo-boehmite and preparation method for gamma-alumina
CN105347374A (en) * 2015-11-20 2016-02-24 中石化催化剂（北京）有限公司 Production method of pseudo-boehmite
CN106044815A (en) * 2016-07-18 2016-10-26 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 Gibbsite and preparation method thereof
CN106044815B (en) * 2016-07-18 2018-03-20 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 A kind of gibbsite and preparation method thereof
CN111592022A (en) * 2020-04-20 2020-08-28 中铝山东新材料有限公司 Method for producing pseudo-boehmite
CN116726919A (en) * 2023-05-22 2023-09-12 大连瑞克科技股份有限公司 Modified carrier of catalyst for synthesizing ethylene oxide by oxidizing ethylene and preparation method thereof
CN116726919B (en) * 2023-05-22 2024-04-09 大连瑞克科技股份有限公司 Modified carrier of catalyst for synthesizing ethylene oxide by oxidizing ethylene and preparation method thereof

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