Взаємозв'язок потужності насоса для перемішування рослинної олії та параметрів дискового змішувача

Abstract

UDC 620.92

RELATIONSHIP POWER PUMP FOR MIXING VEGETABLE OIL AND DISK SETTING MIXER

G. Golub, M. Pavlenko, V. Chuba, S. Kuharets, O. Osypchuk

In the production of biodiesel one of the key points is to ensure the full passage esterification process, because it affects the quality of the product. In the process of passing through esterification impact properly selected chemical components, temperature, time, type of process and mixing. Given that in the esterification is mixing two different in density materials (vegetable oil and potassium methylate), properly selected kind of mixing ensures the completeness of the process of passing. To produce biodiesel using mechanical, hydrodynamic and hydro jet mixing. Due to its characteristics, hydro jet mixing in the production of biodiesel is becoming more common. Of particular note is the use of disk with the mixer.

Improvement of equipment and production lines for the production of biodiesel using hydro jet mixing and hydrodynamic involved: MM Baranovsky, MI Tregub, V. Chub, who proposed use in equipment for the production of biodiesel hydraulic cavitation chamber to improve the quality mixing. Developed and equipment for the production of biodiesel using in the esterification hydro jet mixers. Experimentally investigated parameters of the equipment for the production of biodiesel using mixing and circulation is set at which energy costs are minimal. In this equipment perform basic mixing nozzles placed on the walls of the reactor.

However, the question of determining the power consumption depending upon hardware for biodiesel production from hydro jet mixing using the mixer disk remains unexplored.

The influence of process parameters on the power consumption of pump equipment for biodiesel production from hydro jet mixing and use of disk mixer conducted in laboratory conditions using stooge pump for pumping emulsion. To establish a relationship of influence of the gap between the nozzle discs (d), the rotation frequency of the pump (n_D) and immersion depth (h) in the power consumption of the pump (P), an experiment was conducted according to plan Box-Banking.

The results of the experiment were a mathematical model - the regression equation in the form of a second order polynomial, which in decoded form is:

P = 347,8221 +0,4456 n_D – 107,7907d +

+ 0,0007n_D² + 18,1199 d² – 0,0958 n_Dd                      (1)

The analysis showed that with increasing rotational speed of the pump power consumption increases due to rising energy costs due to increased motor performance pump.

With the increase in the gap between the discs injector pump power consumption is reduced, due to a decrease in energy consumption electric motor that turns the pump by reducing the pump pressure.

Analysis of the mutual influence of rotational speed of the pump and the gap between the discs nozzles on the power consumption of the pump using disk mixer shown that an increase in the gap between the discs jets and reduction of frequency of rotation of the pump power consumption of disk mixer reduced by reducing energy consumption for mixing and reduce the power consumption of the motor by reducing the pressure pump.

Minimal power consumption achieved with the gap between the discs nozzle 5.4 mm, speed of rotation of the pump 96 rev. / Min. and is 210 watts. Depth no significant impact on the power consumption of the pump using disk mixer.

Conclusion

Improvement of equipment for the production of biodiesel using disk mixers should move toward reducing power consumption by creating new designs that will blend quality components and will have a minimum hydraulic pressure.