SU982771A1 - Method of automatic control of bacteria-yeast biomass granulation process - Google Patents

Description

(3, to

de a., a, a, a, a., a. - constant values - the flow of the suspension of the mass into the granulator;

air flow in the B03S null;

Qnp

the amount of the product;

T 8u respectively those PR

HIGH

The inlet air, the leaving air, product, ensures that the desired moisture content of the output product is maintained. This conclusion can be obtained from the consideration of the following system of equations of the material and heat ball; The material balance equation for biomass in the granulator can be written as. ; biome PR - 8L where P0l is the amount of evaporated moisture. "5 oom ° 2 eozd BH -%" VO-R biom 2-B1C e MOM IBX J: G8. V. g aj - Cfr (1-x); ae C, ". Thus, the maintenance of a given humidity X.2 corresponds to the maintenance of the ratio C), the signal from the thermocouple 2 measuring the temperature of the fluidized bed and the granulator 1 is fed to the controller b and the computing unit 5. At the same The unit receives signals from flow sensors 7 and 8, installed respectively on the supply lines of the suspension of bacterial-yeast biomass and air to the granulator, and thermocouples 2-4, measuring temperatures c. fluidized bed at the inlet and outlet of the gravitator. Computing unit 5 generates a correction signal. P proportional to the value of the formula (1), depending on the signal from the sensors 7 and 8 and the thermal pair 2-4. The signal produced by block 5 is fed to regulator 6, Regulator i6 acts on the actuating mechanism 9 installed on the bacterial-yeast biomass suspension supply line to the granulator.

The equation of material balance for moisture in the granulator can be written

(3)

+ G

 ABOUT

ow

etc

where h. and Xg- humidity respectively

Claims (2)

suspensions of biomass and obtained granules The equation of the thermal balance of a granulator can be written 39827714 Maintaining a given ratio of RVI exalted 4 6io | C out at 6th, etc., 4. , “.A.,.„ ..., BOZA ex -; const, (1 - a Q T 6 Biome out -AAB B biome Yai in boad blf- BX (4) WERE you where Tcx is the temperature of the incoming biomass; heat capacity, respectively (. & SPR) suspension of biomass, inlet air, exhaust air and Solving equations (2), (3) and (4 relative to the moisture content of the granules, respectively), we obtain the equation x ° 4® biome biome direct The annual technical and economic effect from the implementation of the proposed method in the Rasskazovsky biochemical plant is approximately 2500 rubles. Invention Formula automatic control of the granulation process the root biomass by stabilizing the temperature inside the fluidized bed of biomass granules by changing the flow rate of the biomass suspension, adjusting the temperature inside the fluidized bed according to the ratio of the temperature of the incoming air inside and outside the fluidized bed, in order to improve the accuracy maintaining the moisture content of the finished product, the temperature inside the fluidized bed is adjusted depending on the correlation of the flow rate of the biomass suspension and the flow rate of the incoming ozduha Sources of information taken into account in the examination 1.Romankov PG, Rashkovska NB Drying in a suspended layer. L., 1968, p. 349-351. 2. USSR author's certificate number 649935, cl. F 26 B25 / 22, 1977. J