RU2175952C1 - Method of drying aluminium hydroxochloride solution or paste - Google Patents
Method of drying aluminium hydroxochloride solution or paste Download PDFInfo
- Publication number
- RU2175952C1 RU2175952C1 RU2000115358A RU2000115358A RU2175952C1 RU 2175952 C1 RU2175952 C1 RU 2175952C1 RU 2000115358 A RU2000115358 A RU 2000115358A RU 2000115358 A RU2000115358 A RU 2000115358A RU 2175952 C1 RU2175952 C1 RU 2175952C1
- Authority
- RU
- Russia
- Prior art keywords
- drying
- hydroxochloride
- solution
- paste
- minutes
- Prior art date
Links
- 238000001035 drying Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 6
- 239000004411 aluminium Substances 0.000 title abstract 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract description 4
- 239000012535 impurity Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 229910000041 hydrogen chloride Inorganic materials 0.000 abstract description 2
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 9
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 2
- NNCOOIBIVIODKO-UHFFFAOYSA-N aluminum;hypochlorous acid Chemical compound [Al].ClO NNCOOIBIVIODKO-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000002274 desiccant Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical class Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 1
- -1 aluminum hydroxyl chloride Chemical compound 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012254 powdered material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Catalysts (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
Изобретение относится к химической промышленности и цветной металлургии, связано с техникой получения сухого гидроксохлорида алюминия, который находит широкое применение в различных отраслях промышленности, в том числе для очистки питьевых и промышленных сточных вод. The invention relates to the chemical industry and non-ferrous metallurgy, is associated with the technique of obtaining dry aluminum hydroxychloride, which is widely used in various industries, including for the treatment of drinking and industrial wastewater.
Известен способ получения порошкообразного гидроксохлорида алюминия путем сушки его водного раствора при прямоточном распылении пневматическими форсунками в сушильном барабане с получением конечного продукта с содержанием 20-40% Al2O3 (Л. Г. Романков, Н.Б. Рашковская. Сушка во взвешенном состоянии, Л.: Химия, 1968 г., с.70-85).A known method of producing powdered aluminum hydroxychloride by drying its aqueous solution by direct-flow spraying with pneumatic nozzles in a drying drum to obtain the final product with a content of 20-40% Al 2 O 3 (L. G. Romankov, NB Rashkovskaya. Suspended drying , L .: Chemistry, 1968, p. 70-85).
Недостатком данного способа является неравномерность термообработки в связи с неоднородностью размеров капель раствора, что приводит, с одной стороны, к недосыханию части продукта, а с другой стороны, к частичному разложению продукта. The disadvantage of this method is the unevenness of the heat treatment due to the heterogeneity of the size of the droplets of the solution, which leads, on the one hand, to the drying of part of the product, and on the other hand, to partial decomposition of the product.
Наиболее близким к изобретению является способ получения сухого гидроксохлорида алюминия, включающий прямоточное пневматическое распыливание раствора, содержащего хлористые соединения алюминия, агентом, имеющим скорость 60-100 м/сек, обработку их сушильным агентом с последующей досушкой полученного продукта в фильтрующем слое с подачей дополнительного сушильного агента с температурой 90-110oC в течение 30-60 мин. При этом был получен гидроксохлорид алюминия с содержанием 25-30% оксида алюминия в активной форме и 1,1-2,0% нерастворимых примесей.Closest to the invention is a method for producing dry aluminum hydroxo chloride, including direct-flow pneumatic spraying of a solution containing aluminum chloride compounds with an agent having a speed of 60-100 m / s, processing them with a drying agent, followed by drying of the obtained product in the filter layer with the addition of an additional drying agent with a temperature of 90-110 o C for 30-60 minutes In this case, aluminum hydroxyl chloride was obtained with a content of 25-30% of aluminum oxide in the active form and 1.1-2.0% of insoluble impurities.
К числу недостатков этого способа сушки следует отнести следующее:
- существенное содержание (1,1-2,0%) нерастворимых примесей;
- переход в газовую фазу значительной части хлористого водорода во время сушки;
- большие капитальные вложения при создании сушильной установки, что обусловлено необходимостью улавливания порошкообразного материала и соляной кислоты, перешедшей в газовую фазу с последующим возвращением ее в процесс.The disadvantages of this drying method include the following:
- significant content (1.1-2.0%) of insoluble impurities;
- the transition to the gas phase of a significant portion of hydrogen chloride during drying;
- large capital investments in the creation of the drying unit, which is due to the need to capture the powdered material and hydrochloric acid, which passed into the gas phase with its subsequent return to the process.
Задачей изобретения является устранение вышеуказанных недостатков. The objective of the invention is to remedy the above disadvantages.
Поставленная задача достигается способом сушки раствора или пасты гидроксохлорида алюминия токами высокой частоты в течение 5-20 мин при температуре 60-120oC и толщине слоя 1-15 см с получением порошкообразного продукта.The problem is achieved by drying the solution or paste of aluminum hydroxide with high frequency currents for 5-20 minutes at a temperature of 60-120 o C and a layer thickness of 1-15 cm to obtain a powdery product.
При такой сушке можно точнее регулировать температуру и влажность материала. Материал при этом прогревается по всему объему, что не приводит к перегреву отдельных его частиц, как в других видах сушки, и, следовательно, не происходит интенсивного разложения продукта. Из-за отсутствия теплового агента в виде топочных газов пылевынос незначительный, а поэтому нет необходимости в дорогостоящем пылеулавливающем оборудовании. With such drying, it is possible to more accurately control the temperature and humidity of the material. In this case, the material is heated throughout the entire volume, which does not lead to overheating of its individual particles, as in other types of drying, and, therefore, there is no intensive decomposition of the product. Due to the lack of a thermal agent in the form of flue gases, dust removal is negligible, and therefore there is no need for expensive dust removal equipment.
При толщине слоя менее 1 см, времени менее 5 мин и температуре менее 60oC материал плохо прогревается, снижается производительность процесса.When the layer thickness is less than 1 cm, the time is less than 5 minutes and the temperature is less than 60 o C, the material is poorly heated, the process productivity is reduced.
А при увеличении слоя более 15 см, времени более 10 мин и температуре более 120oC увеличивается содержание нерастворимого остатка, снижается выход продукта.And with an increase in the layer of more than 15 cm, a time of more than 10 minutes and a temperature of more than 120 o C, the content of insoluble residue increases, the yield of the product decreases.
Показано, что время сушки может составлять 5-15 мин при температуре 60-120oC и толщине слоя 5-15 см. В этих условиях можно получить гидроксохлорид алюминия с содержанием нерастворимого вещества 0,64% через 6 мин, 0,85% - через 13 мин и 2,2% - только через 26 мин при общем содержании Al2O3 в продукте 35-40%.It was shown that the drying time can be 5-15 minutes at a temperature of 60-120 o C and a layer thickness of 5-15 cm. Under these conditions, it is possible to obtain aluminum hydroxochloride with an insoluble matter content of 0.64% after 6 minutes, 0.85% after 13 minutes and 2.2% - only after 26 minutes with a total Al 2 O 3 content in the product of 35-40%.
Пример. Example.
На установке СВЧ мощностью 0,6 кВт осуществлялась сушка токами высокой частоты раствора гидроксохлорида алюминия с содержанием 15% по Al2O3 в количестве 400 г при температуре 85oC и толщине слоя 3 см в течение 10 мин. Получен порошкообразный продукт с содержанием 3,5% Al2O3 и 0,7% нерастворимого остатка. Продукт быстро в течение 2 мин растворился в воде.At a microwave installation with a power of 0.6 kW, high-frequency currents were dried with an aluminum hydroxide solution of 15% Al 2 O 3 in an amount of 400 g at a temperature of 85 ° C and a layer thickness of 3 cm for 10 minutes. A powdery product was obtained with a content of 3.5% Al 2 O 3 and 0.7% insoluble residue. The product quickly dissolved in water within 2 minutes.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2000115358A RU2175952C1 (en) | 2000-06-16 | 2000-06-16 | Method of drying aluminium hydroxochloride solution or paste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2000115358A RU2175952C1 (en) | 2000-06-16 | 2000-06-16 | Method of drying aluminium hydroxochloride solution or paste |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RU2175952C1 true RU2175952C1 (en) | 2001-11-20 |
Family
ID=20236193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2000115358A RU2175952C1 (en) | 2000-06-16 | 2000-06-16 | Method of drying aluminium hydroxochloride solution or paste |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2175952C1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2241673C1 (en) * | 2003-05-20 | 2004-12-10 | Флисюк Олег Михайлович | Method of drying aluminum hydroxochloride in fluidized-bed apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3920406A (en) * | 1972-12-23 | 1975-11-18 | Hoechst Ag | Process for the preparation of aluminium hydroxy halide powders |
| GB1460966A (en) * | 1973-02-27 | 1977-01-06 | Hoechst Ag | Process for the preparation of basic aluminium chlorides |
| US4944933A (en) * | 1986-03-27 | 1990-07-31 | Lever Brothers Company | Preparation of basic aluminium halides |
| DE4121276A1 (en) * | 1991-06-27 | 1993-01-14 | Metallgesellschaft Ag | METHOD FOR PRODUCING SULFATE-BASIC POLYALUMINUM CHLORIDE SOLUTIONS |
-
2000
- 2000-06-16 RU RU2000115358A patent/RU2175952C1/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3920406A (en) * | 1972-12-23 | 1975-11-18 | Hoechst Ag | Process for the preparation of aluminium hydroxy halide powders |
| GB1458039A (en) * | 1972-12-23 | 1976-12-08 | Hoechst Ag | Preparation of aluminium hydroxy halide powders |
| GB1460966A (en) * | 1973-02-27 | 1977-01-06 | Hoechst Ag | Process for the preparation of basic aluminium chlorides |
| US4944933A (en) * | 1986-03-27 | 1990-07-31 | Lever Brothers Company | Preparation of basic aluminium halides |
| DE4121276A1 (en) * | 1991-06-27 | 1993-01-14 | Metallgesellschaft Ag | METHOD FOR PRODUCING SULFATE-BASIC POLYALUMINUM CHLORIDE SOLUTIONS |
Non-Patent Citations (1)
| Title |
|---|
| Л.Г.РОМАНКОВ, Н.Б.РАШКОВСКАЯ. Сушка во взвешенном состоянии. - Л.: Химия, 1968, с.70-85. * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2241673C1 (en) * | 2003-05-20 | 2004-12-10 | Флисюк Олег Михайлович | Method of drying aluminum hydroxochloride in fluidized-bed apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US12129183B2 (en) | Method for preparing basic copper carbonate | |
| RU2175952C1 (en) | Method of drying aluminium hydroxochloride solution or paste | |
| CN107585792B (en) | Preparation method of ferrous chloride dihydrate solid and ferrous chloride dihydrate solid | |
| JP2001288201A (en) | Hydrolysis and depolymerization method of cellulose ether with acid catalyst | |
| JPH11504374A (en) | Purification method of polyvinyl alcohol | |
| FR2549462A1 (en) | MANUFACTURE OF ALUMINUM AND FLUORINE COMPOUNDS | |
| CN107082740A (en) | It is a kind of to improve the method that chloro method prepares prenol yield | |
| EP3468917A1 (en) | Production of nanoparticulate titanium dioxide | |
| US3953528A (en) | Process for sublimation purification of crude hydroquinone with stirred and fluidized bed | |
| US4248849A (en) | Process for the continuous dehydration and calcination of hydrated aluminum fluoride for the manufacture of high purity aluminum fluoride | |
| RU2241673C1 (en) | Method of drying aluminum hydroxochloride in fluidized-bed apparatus | |
| JPS6045126B2 (en) | How to convert hydrargilite to boehmite | |
| JPH1160221A (en) | Production of alkali metal condensed phosphate | |
| RU2125018C1 (en) | Pigment titanium dioxide production method | |
| JP3053414B2 (en) | New or old graphite powder processing method to improve its effectiveness as metal catalyst support | |
| JPH05255771A (en) | Reduction method for noble metal | |
| RU2004491C1 (en) | Method for cleaning detonation diamonds | |
| CN108946800A (en) | A kind of titanium dioxide and its preparation method and application of crystal face exposure | |
| SU1765114A1 (en) | Method of expanded graphite production | |
| Mason | The solubilities of four amino butyric acids and the densities of aqueous solutions of the acids at 25 | |
| WO2021138054A1 (en) | Process for making high purity salts of cis-1,2-cyclohexandicarboxylic acid | |
| FI78055C (en) | FOERFARANDE FOER FRAMSTAELLNING AV TAETT VATTENFRITT SATRIUMKARBONAT OCH MEDELST DETTA FOERFARANDE FRAMSTAELLT TAETT VATTENFRITT SATRIUMKARBONAT. | |
| JPS6245552A (en) | Production of alkali sorbate | |
| CA1259775A (en) | Purification and reconcentration of waste sulphuric acid | |
| SU1108074A1 (en) | Method of obtaining cuprous oxide |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20130617 |