CN2616525Y - Reactor for preparing aluminium hydroxide - Google Patents
Reactor for preparing aluminium hydroxide Download PDFInfo
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- CN2616525Y CN2616525Y CN 03211823 CN03211823U CN2616525Y CN 2616525 Y CN2616525 Y CN 2616525Y CN 03211823 CN03211823 CN 03211823 CN 03211823 U CN03211823 U CN 03211823U CN 2616525 Y CN2616525 Y CN 2616525Y
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- gas
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Abstract
The utility model provides a new reactor used in preparation of aluminum hydroxide, comprising a reaction gas cylinder and a distribution device. The reaction cylinder of the reactor is a jacket structure to regulate temperature with water and water vapor. Two gas distribution inlets can be both flexible adjustment of inlet gas and switching. The distribution of gas in the inlets between the two with full, 0.5 to 2 mm diameter circular hole of the gas distribution, gas distribution plate and synergies to achieve the intake secondary distribution of the gas in response to uniform distribution system and improve the mixing impact of the reaction system. The utility model is used for the preparation of aluminum hydroxide from carbon dioxide and sodium aluminate reaction, and also can be used for other gas-liquid or liquid-liquid contact reaction.
Description
1, technical field
The utility model belongs to a kind of reactor, specifically, relates to the reactor that a kind of gas liquid reaction generation solid product, especially sodium aluminate solution and carbon dioxide reaction prepare aluminium hydroxide.
2, background technology
Sodium aluminate aqueous solution and carbon dioxide reaction are one of important method of preparation activated alumina precursor-aluminium hydroxide.The characteristics of this method are to generate solid matter by gas liquid reaction, so the uniform distribution of gas and make full use of and the accurate control of acid-base neutralisation reaction conditions is the important factor of decision reaction.Traditional mechanically stirred reactor not only energy consumption is big, and gas is distributed very equably, thereby the performance of product can not get guaranteeing that the utilization ratio of gas is not high yet.Chinese patent ZL96213433.3 has designed a kind of tower reactor for preparing aluminium hydroxide according to the characteristics of gas liquid reaction, by forming at the bottom of tower body, tower cap, the tower, be characterized in that the junction at the bottom of tower body and tower is equipped with gas distribution grid, the percentage of open area of grid distributor is 0.5%～7%, and the diameter in hole is 0.5～3mm on the grid distributor.The bubble that bloats plays the effect of stirred solution, but this reactor has the following disadvantages in actual use: at first, temperature of reaction can't accuracy controlling, and temperature of reaction is the important factor that influences the aluminium hydroxide product characteristics; Secondly, owing to only establish an inlet mouth at the bottom of tower, the dilution of gas and switching are very inconvenient; The 3rd, the gas by gas distribution grid does not reach very uniformly and distributes.
3, summary of the invention
The purpose of this utility model is exactly the shortcoming that overcomes above-mentioned reactor, but invent a kind of accuracy controlling temperature of reaction, the air inlet easy switching is flexible, and gas distribution very uniform gas-liquid contact reactor, particularly sodium aluminate solution and carbon dioxide reaction prepare the reactor of activated alumina precursor-aluminium hydroxide.The utility model reactor also can be used for other gas-liquid or liquid liquid contact reacts.
The utility model reactor comprises reactor shell and gas distributor, and reactor shell is a jacket type structure, and material import and export (being generally the three pairs of openings in position, upper, middle and lower) is set on the cylindrical shell, and chuck is upper and lower to be had import and export each one.Gas distributor is connected with cylindrical shell by flange, is arranged on the cylindrical shell bottom.Gas distributor comprises gas distribution tube and gas distribution grid, gas distribution tube below gas distribution grid, gas distribution tube and two inlet pipe UNICOMs.
The novel reactor that is used to prepare aluminium hydroxide of the present utility model has following outstanding advantage:
(1) simple and practical, be easy to make installation and easy to operate;
(2) but accuracy controlling temperature of reaction and pH value;
(3) feeding of gas and switch flexible;
(4) gas of feeding reactor reaches very uniformly through two sub-distribution and distributes, and has improved the stirring efficiency of the utilization ratio and the reaction system of gas;
(5) can satisfy the requirement of periodical operation and operate continuously, can be at the regulated in wider range operating parameters.
4, description of drawings
1 is leakage fluid dram, and 2 and 3 is two inlet mouths of gas distributor, and 13 is gas distribution tube, and 14 is gas distribution grid, and their mutual group become the gas distributor of the utility model reactor; The top of gas distributor is reacting cylinder body, 5,6,7,8,9,10 material import and exports that are respectively three positions, reacting cylinder body upper, middle and lower, each opening all can be used as opening for feed or discharge port, also can be used for measuring temperature, pH value or uses as thief hatch; 4 are the reactor jacket inlet, and 11 is Jacket outlet, and they are used for the circulation turnover of chuck temperature adjusting medium; 12 is the venting port on reactor top; 15 is the reactor loam cake.
5, embodiment
Reactor of the present utility model is made up of reacting cylinder body and gas distributor.Reacting cylinder body is a jacket type structure, can feed temperature control medium such as water, water vapor etc.Respectively there is pair of openings at three positions, the upper, middle and lower of reacting cylinder body, are used for charging or discharging, measurement temperature and pH value and sampling analysis etc.Each one of import and outlet is arranged on the chuck, be used for feeding and deriving temperature control mediums such as water, water vapor.
Gas distributor is connected with reacting cylinder body by flange, is arranged on the cylindrical shell bottom.Gas distributor comprises gas distribution tube and gas distribution grid, and gas distribution tube is below gas distribution grid.Gas distribution tube and two inlet pipe UNICOMs, can be in reaction beginning, finish or the switching of realization response gas and dilution or bubbling stirring inter gas is easily carried out in the process in reaction, simultaneously also can the two-way air inlet, in gas distributor, make the reactant gases dilution.
The gas that enters reactor at first after gas distribution tube distributes, carries out secondary distribution through gas distribution grid again, distributes thereby the gas that enters reactor is reached very uniformly.Gas distribution tube can use materials such as plastics, rubber, synthetic glass, stainless steel to make the circular aperture of uniform distribution φ 0.5～2mm on the pipe.Gas distribution tube can be single tube and structures such as comb or coil pipe.Gas distribution grid can be structures such as sieve plate, bubble plate.
Reactor described in the utility model adopts materials such as stainless steel, synthetic glass, glass, quartz, pottery to make.This reactor shape is cylindrical, and aspect ratio is 5～20: 1.
Below in conjunction with accompanying drawing 1 usefulness embodiment the use of novel reactor of the present utility model is described further.
When periodical operation, close leakage fluid dram 1, open venting port 12, feed the air of certain flow from inlet mouth 2.Slowly add a certain amount of NaAlO from opening for feed 9 then
2Solution, Jacket inlet 4 feeds water coolant or hot water, derives water from Jacket outlet 11, and temperature and the flow of regulating water make NaAlO
2Solution reaches required temperature of reaction.Feed the CO of finite concentration and flow then from inlet mouth 3
2Gas, air and CO
2Gas carries out secondary distribution through gas distribution grid 14 again after primary distribution is carried out in gas distribution tube 13 mixing, form equally distributed bubble and NaAlO
2Solution carries out contact reacts.Need constantly the flow of adjusting water invariable in the reaction process to guarantee temperature of reaction.Behind the reaction certain hour, close inlet mouth 3 and stop to feed CO
2Gas, inlet mouth 2 continue bubbling air and wear out.Behind the aging certain hour, discharge aluminum hydroxide slurry, through washing, drying, promptly get aluminum hydroxide solid elastomer again from discharge port 5.The charging and discharging mouth 7,8 of reactor uses as temperature-measuring port and thief hatch, with temperature in the assaying reaction process and pH value etc.
Reactor of the present utility model also can carry out operate continuously, detailed process is: close leakage fluid dram 1, open rafting gas port 12, feed the air of certain flow from inlet mouth 2, put into a certain amount of water purification and make air bubbling therein from opening for feed 9, feed water coolant or hot water or water vapor then from chuck, derive water or water vapor from Jacket outlet 11, the water purifying temperature is to reacting temperature required in the conditioned reaction device.After treating water temperature-resistant, feed certain density NaAlO with constant flow rate from opening for feed 6
2Solution feeds the CO of certain flow simultaneously from inlet mouth 3
2Gas or CO
2Gas and Air mixing gas, the slurries of generation are continuously discharged from discharge port 9.The slurries of discharging promptly get aluminum hydroxide solid elastomer through aging, washing, drying treatment.The charging and discharging mouth 7,8 of reactor uses as temperature-measuring port and thief hatch, with temperature in the assaying reaction process and pH value etc.
Claims (9)
1, a kind of reactor for preparing aluminium hydroxide comprises reactor shell and gas distributor, it is characterized in that reactor shell is a jacket type structure, and material import and export is set on the cylindrical shell, and chuck is upper and lower to be had import and export each one; Gas distributor is arranged on cylindrical shell bottom, and gas distributor comprises gas distribution tube and gas distribution grid, gas distribution tube below gas distribution grid, gas distribution tube and inlet pipe UNICOM.
2,, it is characterized in that there are three pairs of material openings at the position, upper, middle and lower of described cylindrical shell according to the described reactor of claim 1.
3,, it is characterized in that described gas distributor is connected with cylindrical shell by flange according to the described reactor of claim 1.
4,, it is characterized in that described gas distribution tube and two inlet pipe UNICOMs according to the described reactor of claim 1.
5,, it is characterized in that described gas distribution tube is single tube and comb or coil arrangement according to the described reactor of claim 1.
6,, it is characterized in that described gas distribution tube uses plastics, rubber, synthetic glass or stainless steel to make the circular aperture of uniform distribution φ 0.5～2mm on the pipe according to the described reactor of claim 1.
7,, it is characterized in that described gas distribution grid is sieve plate or bubble plate structure according to the described reactor of claim 1.
8,, it is characterized in that described reactor shell adopts stainless steel, synthetic glass, glass, quartz or stupalith to make according to the described reactor of claim 1.
9, according to the described reactor of claim 1, it is cylindrical to it is characterized in that described reactor shell is shaped as, and aspect ratio is 5～20: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03211823 CN2616525Y (en) | 2003-03-10 | 2003-03-10 | Reactor for preparing aluminium hydroxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03211823 CN2616525Y (en) | 2003-03-10 | 2003-03-10 | Reactor for preparing aluminium hydroxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2616525Y true CN2616525Y (en) | 2004-05-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03211823 Expired - Lifetime CN2616525Y (en) | 2003-03-10 | 2003-03-10 | Reactor for preparing aluminium hydroxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2616525Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102838148A (en) * | 2011-06-23 | 2012-12-26 | 中国石油化工股份有限公司 | Reactor and method used for preparing aluminum hydroxide |
| CN103449484A (en) * | 2013-08-23 | 2013-12-18 | 中国铝业股份有限公司 | Method for continuously producing pseudoboehmite |
| CN109553121A (en) * | 2018-12-24 | 2019-04-02 | 中铝山东有限公司 | A kind of preparation method of high-purity low-sodium aluminum hydroxide |
| CN110790293A (en) * | 2018-08-01 | 2020-02-14 | 中国石油化工股份有限公司 | Method for preparing pseudoboehmite |
| CN114522632A (en) * | 2020-11-06 | 2022-05-24 | 中国石油化工股份有限公司 | Preparation device and preparation method of pseudo-boehmite |
-
2003
- 2003-03-10 CN CN 03211823 patent/CN2616525Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102838148A (en) * | 2011-06-23 | 2012-12-26 | 中国石油化工股份有限公司 | Reactor and method used for preparing aluminum hydroxide |
| CN102838148B (en) * | 2011-06-23 | 2014-04-02 | 中国石油化工股份有限公司 | Reactor and method used for preparing aluminum hydroxide |
| CN103449484A (en) * | 2013-08-23 | 2013-12-18 | 中国铝业股份有限公司 | Method for continuously producing pseudoboehmite |
| CN103449484B (en) * | 2013-08-23 | 2015-07-08 | 中国铝业股份有限公司 | Method for continuously producing pseudoboehmite |
| CN110790293A (en) * | 2018-08-01 | 2020-02-14 | 中国石油化工股份有限公司 | Method for preparing pseudoboehmite |
| CN110790293B (en) * | 2018-08-01 | 2022-06-07 | 中国石油化工股份有限公司 | Method for preparing pseudoboehmite |
| CN109553121A (en) * | 2018-12-24 | 2019-04-02 | 中铝山东有限公司 | A kind of preparation method of high-purity low-sodium aluminum hydroxide |
| CN109553121B (en) * | 2018-12-24 | 2021-06-08 | 中铝山东有限公司 | Preparation method of high-purity low-sodium aluminum hydroxide |
| CN114522632A (en) * | 2020-11-06 | 2022-05-24 | 中国石油化工股份有限公司 | Preparation device and preparation method of pseudo-boehmite |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130310 Granted publication date: 20040519 |