Aluminum soil production method

A production method, aluminum sol technology, applied in the direction of sol preparation, chemical instruments and methods, aluminum halide, etc., can solve the problems of potential safety hazards, easy overpressure and overtemperature, complex operating conditions, high energy consumption, etc., to avoid rapid reaction temperature rise, The operation process is stable and safe, and the equipment structure is simple

Active Publication Date: 2017-01-04
REZEL CATALYSTS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The characteristics of this process are: small investment, small output, limited equipment volume, generally use equipment below 5 cubic meters for production, large safety hazards, prone to problems such as tank leakage and flash explosion, and short service life of equipment
In the production process, the operating conditions such as continuous stirring, heating, and cooling are relatively complicated, and the energy consumption is high.
The use of aluminum powder as the aluminum source is prone to problems such as too slow reaction after sinking to the bottom, and too fast reaction after reaching the reaction temperature, which is difficult to operate
It is also easy to block the discharge port when unloading
After unloading, the reactor is prone to a large amount of viscous colloid, and the unloading is not clean
Inconvenient cleaning will occur during downtime
Reactors are generally made of enamel reactors, which are easy to damage, and the service life is generally not more than 1 year, and some are even less than 3 months
Both of the above two methods need to use a condenser, and the pressure in the reaction process is not stable, which may easily cause the rupture of the condenser tubes.
Although aluminum sol has a wide range of uses and a large amount of use, the traditional production process has high energy consumption, long production cycle, unstable product quality, potential safety hazards and easy overpressure and overtemperature; in addition, the daily output is small and the cost is high. Continuous production equipment Large investment

Method used

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  • Aluminum soil production method

Examples

Experimental program
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Effect test

Embodiment 1

[0021] The volume of the reactor is 25m³, the volume of the silo is 3m³, 1.5 tons of aluminum scraps are fed into the single kettle, 16.8 tons of 8wt% hydrochloric acid, and the output of the single kettle is 13 tons. Add 1 / 4 first, and after 30 minutes, the temperature will rise to 75°C, and the temperature will not continue to rise, and white water vapor will overflow from the vent. After maintaining the temperature for 20 minutes, continue to add dilute hydrochloric acid to the reactor, observe the temperature change during the dosing process, and adjust the feeding speed. After the temperature rises to 90°C, add a small amount of dilute hydrochloric acid to maintain the temperature for reaction , A small amount of overflow liquid flows from the reactor overflow port into the circulation storage tank, through the overflow port, it can prevent the tank from leaking. After the hydrochloric acid is added, slowly add the feed liquid from the circulation storage tank to the react...

Embodiment 2

[0023] The volume of the reactor is 35m³, the volume of the silo is 5m³, 3 tons of aluminum chips are fed into the single kettle, 25.6 tons of 10wt% hydrochloric acid, and the output of the single kettle is 15 tons. Add 1 / 3 first, and after 20 minutes, the temperature will rise to 80°C, and the temperature will not continue to rise, and white water vapor will overflow from the vent. After maintaining the temperature for 15 minutes, continue to add dilute hydrochloric acid to the reactor, observe the temperature change during the dosing process, and adjust the feeding speed. After the temperature rises to 100°C, add a small amount of dilute hydrochloric acid to maintain the temperature for reaction , A small amount of overflow liquid flows from the reactor overflow port into the circulation storage tank, through the overflow port, it can prevent the tank from leaking. After the hydrochloric acid is added, slowly add the feed liquid from the circulation storage tank to the reacto...

Embodiment 3

[0025] The volume of the reactor is 30m³, the volume of the silo is 3m³, 2 tons of aluminum chips are fed into the single kettle, 20.5 tons of 9wt% hydrochloric acid, and the output of the single kettle is 14.5 tons. Add 1 / 6, and after 35 minutes, the temperature rises to 70°C. After the temperature does not continue to rise, white water vapor will overflow from the vent. After maintaining the temperature for 30 minutes, continue to add dilute hydrochloric acid to the reaction kettle. During the dosing process, pay attention to observe the temperature change and adjust the feeding speed. After the temperature rises to 97°C, add a small amount of dilute hydrochloric acid to maintain the temperature for reaction , A small amount of overflow liquid flows from the reactor overflow port into the circulation storage tank, through the overflow port, it can prevent the tank from leaking. After the hydrochloric acid is added, slowly add the feed liquid from the circulation storage tank ...

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Abstract

The invention relates to the technical field of chemical industry and in particular relates to an aluminum soil production method. A single-kettle charge production manner is adopted; a reaction kettle internally comprises a stock bin for containing an aluminum source; in a production process, the aluminum source is added into the stock bin and the first part of diluted hydrochloric acid is added into a kettle body, wherein the adding amount is one-tenth to one-third of the total mass; the diluted hydrochloric acid reacts with the aluminum source at the lower part of the stock bin; after reaction temperature is stabilized to 60 DEG C to 80 DEG C, the temperature is kept for 15min to 30min; then the second part of diluted hydrochloric acid is slowly added; after the reaction temperature reaches 85 DEG C to 100 DEG C, the third part of diluted hydrochloric acid is slowly added; the reaction temperature is stabilized to 85 DEG C to 100 DEG C through the speed of adding the third part of diluted hydrochloric acid; after reaction is carried out for 12h to 20h, aluminum soil with the Al / Cl mass ratio of 1.0 to 2.0 and the pH (Potential of Hydrogen) of 2.4 to 3.2 is finally obtained, and total acid adding time is controlled to be 3h to 10h. According to the aluminum soil production method, an intermittent production process is adopted and a normal-pressure spontaneous reaction is carried out; a reaction speed is sufficiently controlled in a reaction process and spontaneous heat generated by the reaction is reasonably utilized; in a whole production process, stirring and steam heating are not needed, so that the energy consumption can be reduced by 80 percent or more when being compared with that of a traditional production process.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a method for producing aluminum sol. Background technique [0002] Aluminum sol is an inorganic adhesive, mainly used in medicine, catalyst, petrochemical and other industries. Aluminum sol has a wide range of uses. According to the different acidic dispersants used, it can be divided into aluminum hydrochloride sol, aluminum sulfate sol, aluminum phosphate sol, etc. The aluminum source used is generally metal aluminum, aluminum hydroxide powder, pseudoboehmite, etc. [0003] There are two traditional production processes for aluminum sol: 1) Melt and granulate metal aluminum ingots at high temperature, put them into a continuous reactor after granulation, and heat the reaction. The contact area between particles and acidic medium is limited. Aluminum particles are generally put in excess and added regularly. The process has high energy consumption, that is, a large a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/00C01F7/00C01F7/56
CPCB01J13/0004C01F7/00C01F7/56
Inventor 王洪飞卓润生
Owner REZEL CATALYSTS CORP
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