Economic Optimization of Spray Dryer Operation using Nonlinear Model Predictive Control with State Estimation

Petersen, Lars Norbert; Jørgensen, John Bagterp; Rawlings, James B.

doi:10.1016/j.ifacol.2015.09.018

Cited by 16 publications

(5 citation statements)

References 12 publications

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“…The air flow had no effect in the responses and belonged to the low damage treatments. The spray dryers which followed the geometric restriction according to (Mujumdar, 2013) were not dimensionally possible in pilot scale, with dimensions in treatments (1), (2), (9) and 10 The treatments of Suryanarayana showed negative answers to the geometric restrictions of (Mujumdar, 2013) in all treatments in the L/D and L/V relations. This behavior could be attributed to the correlations of the model that produced responses with differences no bigger than 0.3566 cm between diameter and length, Figure 3, and relation no smaller than 0.752 cm between the length and the volume, Figure 4.…”

Section: Mujumdarmentioning

confidence: 98%

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A comprehensive analysis of critical variables used to design a spray dryer of whey protein concentrates

Barrios

Perez

Telotte

2020

CI&CEQ

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Section: Mujumdarmentioning

confidence: 98%

“…Each model design has been developed from knowledge and experience of the researcher [9]. The focus of this study is to find the common variables in four different design models and evaluate how these variables affect the sizing of the spray dryer [10].…”

mentioning

confidence: 99%

A comprehensive analysis of critical variables used to design a spray dryer of whey protein concentrates

Barrios

Perez

Telotte

2020

CI&CEQ

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“…The solution, sometimes called an slurry, is sprayed through a nozzle into a heating chamber with hot air simultaneously being blown into it. The hot air temperature in the heating chamber has to be maintained stable to increase the powder quality and to minimize the energy consumption [3,6,8]. Therefore, it is necessary to implemented control strategy in spray dryer.…”

Section: Temperature Electronics Closed Loop Controllermentioning

confidence: 99%

“…The large amount of water on the vapor form of the liquid inlet need to be evaporated. The energy consumption on the spray dryer chamber has been extended observed [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Design and Experimental Investigation of an Electronics Spray Dryer Process Control

Parastiwi¹,

Ekojono²,

Irawan³

et al. 2019

IJAST

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Spray drying technology is an effective postharvest process for making fruit and vegetable powders with long shelf life. In general, spray dryer machine needs electricity energy for more than 5KW which can't be afforded by farmer community. In this study, low electricity energy spray drying machine was designed for farmer community. The machine use food grade stainless steel with the combination of electrical energy and liquid petroleum gas (LPG) energy. Electrical energy is used for electronics control system and air compressor, whereas LPG energy use for heat exchanger for the drying chamber. The electronics process controller is implemented to convert fresh fruit or vegetable into a fruit or vegetable powder form of a desired quality at a minimum cost. A simulation of a PID controller with Ziegler-Nichols tuning in the form of an Excel spreadsheet give the parameters used for the machine. Experiment was done to produce tomato powder from fresh tomato, whereas air inlet temperature of 150℃, the pressure of 3 bar and hot air outlet set to 100℃ with the addition of Maltodextrin 40mL/Liter has increase the powder quality, however adding more Maltodextrin make the tomato powder has less natural flavor. Increasing hot air temperature make the powder quality increase, in contrary the energy consumption of making the powder increased.

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“…In addition, many materials can only be used after drying, such as tobacco, coffee, tea, and seeds. The disadvantage of the drying process is that it changes the physical properties of the original material and the chemical properties contained in the material [5]. In carrying out the drying process, several factors affect drying, including the surface area of the dryer, the drying temperature, the speed of air flow in the dryer, the given air pressure, and the time during the drying process [6].…”

Section: Introductionmentioning

confidence: 99%

Energy Saving on Spray Drying Process by Modifying the Hot Air Flow

Setyadi

Yoga

Anggrainy

et al. 2022

J. Phys.: Conf. Ser.

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The drying machine works with the Spray Dryer method to dry particles from a liquid state through continuous spraying in the drying chamber. This Spray Dryer uses an atomizer in the form of a 0.2mm mist nozzle type injector with a spraying capacity of 0.00045 kg/s. Function for atomization during the drying process occurs with a change in the vortex angle of 35°. In this study, the liquid used was pure cow’s milk with a specific heat value of 3930 J/kg K. To increase the total amount of solids, increase the volume, speed up the drying process, and prevent material damage due to high temperatures, the milk was mixed with maltodextrin, water, and salt. In this drying process, the temperatures used are 100°C, 105°C, and 110°C. The humidity of the surrounding air can be reduced by using a dehumidifier containing a zeolite stone type molecular sieve measuring 1.7-2.5mm as an absorbent. The results of this study indicate that the moisture content of dry powdered milk products is 10.01% using a temperature of 105°C with a drying air flow speed of 16 m/sec. In addition, the drying time process was taken a time of 73 minutes which resulted in a drying rate of 0.455gram/second. This dehumidifier affects the temperature in the drying chamber to be constant between 101°C-104°C and lowers the humidity of the air by 7%, resulting in a 222gram milk soak. The efficiency value of the drying machine with a temperature of 105°C is 18.68%.

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Economic Optimization of Spray Dryer Operation using Nonlinear Model Predictive Control with State Estimation

Cited by 16 publications

References 12 publications

A comprehensive analysis of critical variables used to design a spray dryer of whey protein concentrates

A comprehensive analysis of critical variables used to design a spray dryer of whey protein concentrates

Design and Experimental Investigation of an Electronics Spray Dryer Process Control

Energy Saving on Spray Drying Process by Modifying the Hot Air Flow

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