1.1.2 Stage of dispensing

Mixers in the reactor (pos. Р-301 (Р-302)) and the miniamalgamator (pos. МС-301 (МС-302)) are switched on and a necessary speed of mixing is established. The stop valve is opened on the pipelines, which feed reagents in miniamalgamator and a line, connecting miniamalgamator with the reactor. Dosing pumps (pos. G-301, G302) are switched on and the dispensing of solutions organomagnesium combination (from pos. М-314) and TEOS (from pos. М-315) is executed. The correlation of flow organomagnesium combination to TEOS should be equal 2:1.

Depending on the modification of the received magnesium-bearing alloy, the duration of dispensing time changes from 2 to 12 hours and more. The time of preliminary mixing in the miniamalgamator is from 8 to 60 seconds. It is defined by the capacity of the miniamalgamator and the speed of dispensing the components. The speed of dispensing the solutions МОС and TEOS during synthesis is kept to be a constant, as well as keeping the established correlation of volume speeds.

During the dosing of components in the reactor (pos. Р301 (Р-302)) the constant temperature of (35-40) ^оС is held.

In the process of dispensing the speed of mixing in the reactor increases (1,5-2) times. The quantity of turns of the engine of the mixer (pos. HCSA-301m (HCSA -302m)) is regulated automatically by means of the frequency converter (pos. LIRCSAHL-301 (LIRCSAHL-302)) depending on the change of liquid level in the reactor.

1.1.3 Stage of heat treatment

After the dispensing termination, the heat treatment of the reactionary mix in the reactor (pos. Р-301 (Р-302)) is executed on a following mode:

the reactionary mix is kept during 0,5 hour at the temperature of dispensing (35-40) ^оС;

the temperature is evenly raised from that of dispensing (35−40) ^оС to (60-70) ^оС during (0,5-2) hours;

endurance at (60-70) ^оС during (1-2) hours.

1.1.4 Stage of washing

Upon the termination of the heat treatment, the mixing in the reactor (pos. Р-301 (Р-302)) is stopped (the mixer is stopped) and the sedimentation of the mixture in the reactor is executed during (45-60) minutes.

The liquid phase is deleted from the reactor in the collection of mother waters (pos. Е-307), representing a vertical cylindrical device with capacity 6,3 m³.

The removal of the liquid phase from the reactor (pos. Р-301 (Р-302)) is executed step by step, at gradual immersion of a mobile siphon up to appearance of the suspension of the magnesium-bearing alloy in the run-down box (pos. FS-303 (FS-307)).

The possibility of removal of mother waters from "pos. Р-301 (Р-302)" is provided by means of a mobile siphon with a filter. In this case the sediment of suspension of the magnesium-bearing alloy is not executed, the reactor mixer is switched off, and the mobile siphon falls to the bottom a reactor. After that the mother waters are moved through the filter, which has been built in the siphon by the pressure of nitrogen in "pos. Е-307". The control of the process of the moving is executed in accordance with the run-down box (pos. FS-304).

Then quadruple washing of the magnesium-bearing alloy is executed at temperature (50−60) ^оС. For this purpose in "pos. М-311" the necessary quantity of drained heptane is accepted. "Hot" oil is moved to the jacket (pos. М-311) and the heptane is warmed up to temperature (50-60) ^оС. The warmed heptane is moved into the reactor through the bottom (pos. М-311). The reactor mixer is switched on, the temperature (50−60) ^оС is established and sluising during 20 minutes is executed. Then mixing is stopped, the sedimentation is executed during (30-40) minutes, and then the decanting of the washing solution takes place through a mobile siphon, through a run-down box (pos. FS-303 (FS-307)) in "pos. Е-303". The possibility of removal of the washing solution from the reactor is provided through a mobile siphon with a filter. In this case the sedimentation of the suspension of the magnesium-bearing alloy is not executed, the reactor mixer is switched off, and the mobile siphon falls on the bottom of the reactor. After that mother waters through the filter, which has been built in the siphon, are moved by the pressure of nitrogen in "pos. Е-303".

The washing operation repeats three more times. The washing solution after the first and second washing goes in "pos. Е-303", and after the third and fourth washings - in "pos. Е-304/1" and is used as the washing solution of the first and second washing for the next synthesis of the magnesium-bearing alloy. The washing solution comes back into the reactor by the pipeline through the counter (pos. FQIRSAH-304) with a task possibility of giving the necessary quantity of a solvent with automatic closing cutoff valve (pos. HSA-304) at the achievement of the adjusted quantity on symbolic circuit ASU TP.

In case of using the returned washing solutions as solvent for the first and second washing, for the third and fourth washing pure solvent from "pos. М-311" or from "pos. Е-101/2" is used.

The possibility of a ventilating by nitrogen the pipeline of introduction of returnable washing solutions through bypass (pos. FQIRSAH-304, HSA-304) in "pos. Е-303, Е-304/1, Е-304/2" is provided.

The collection-container of washing solutions (pos. Е-303) represents a vertical cylindrical device capacity with 1 m³, intended for gathering the washing solution after the first and second washing of the magnesium-bearing alloy.

Possibility of clearing of washing solutions (pos. Е-303) in collection-containerthrough the pump (pos. Н-304) is provided on external installation, and also it is possible to have a recycle of the washing solution from "pos. Е-303" through the pump (pos. Н-304) with return to "pos. Е-303".

The collection-container of washing solutions (pos. Е-304/1) represents a vertical cylindrical device with capacity 1 m³, intended for gathering of washing solution after the third and fourth washing of the magnesium-bearing alloy with the following return to "pos. Р-301 (Р-302)" as a solvent for the first and second washings of the magnesium-bearing alloy of the next synthesis.

There is a possibility of clearing the washing solutions (pos. Е-304/1) in collection-container through the pump (pos. Н-304) on the external installation, and also it is possible to recycle the washing solution from "pos. Е-304/1" through the pump (pos. Н-304) with return to "pos. Е-304/1".

The pump (pos. Н-304) works in three modes:

1. "Work with pos. Е-303":

recycle of a washing solution with return to "pos. Е-303";

return of a washing solution to the reactor (pos. Р-301 (Р-302));

clearing "pos. Е-303" on external installation.

2. "Work with pos. Е-304/1":

recycle of a washing solution with return to "pos. Е-304/1";

return of a washing solution to the reactor (pos. Р-301 (Р-302));

clearing "pos. Е-304/1" on external installation.

3. "Work with pos. Е-304/2":

recycle of a washing solution with return to "pos. Е-304/2";

return of a washing solution to the reactor (pos. Р-301 (Р-302));

clearing "pos. Е-304/2" on external installation.