Real Time Optimization for steam management in an evaporation section

Merino, Alejandro; Acebes, Luis Felipe; Alves, Raul; Prada, César de

doi:10.1016/j.conengprac.2018.07.010

Cited by 12 publications

(8 citation statements)

References 32 publications

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“…It says that the colour in solution, for the category "extra white sugar" should be not more than 22.5 ICUMSA units. The analysis of the quality requirements to sugar and the prospects of ways to improve the efficiency of the sugar production are given in following works [7,8].…”

Section: 1analysis and Substantiation To Apply Relevant Effective Juice Quality Criteria In Apcs Of The Sugar Mill Evaporatormentioning

confidence: 99%

Determination and Estimation of the Influence of Different Types of Disturbances on the Thick Juice Colour

Liashenko¹

2020

IJETER

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The article considers the inefficient Ukrainian sugar mill operation and the influence of the evaporator automated process control system on energy efficiency of sugar beet production. Sugar production issues which decrease its competitiveness in Ukraine have been identified. Analysis about the impact of the major production departments has been carried out. The influence of the evaporator on the energy efficiency of the factory and on the quality of the products that must be competitive is proved. The study determined the influence of juice quality indicators during evaporation on the quality of sugar and the drawbacks in mathematical support of automated process control systems (APCS), which occur when evaporation conditions change.The article shows the ways to solve issues that happen within decreasing the product quality and inadequate regulation of the production efficiency by means of APCS when the raw materials quality during evaporation has not been taken account. It determines the issues in the work of automated evaporation process control systems. Because of the complexity of juice evaporation in the multiple evaporation station and the influence of various process indicators both technological and qualitative we determine the main vectors of the management at automated process control systems of juice evaporation. To solve the issue, the major criteria of sugar production efficiency, regulatory requirements, theoretical foundations and the practical experience of implementation and the use of quality criteria in APCS in countries using the energy efficient and competitive technologies of sugar production are considered. The efficiency of the proposed product quality criteria for mathematical support of automated evaporation control system is substantiated. Accordingly, there is reason to think that the obtained qualitative criterion of efficiency can be used in mathematical support of automated juice evaporation process control systems at the sugar factory.

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Section: 1analysis and Substantiation To Apply Relevant Effective Juice Quality Criteria In Apcs Of The Sugar Mill Evaporatormentioning

confidence: 99%

Determination and Estimation of the Influence of Different Types of Disturbances on the Thick Juice Colour

Liashenko¹

2020

IJETER

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“…The process generally begins with the sucrose extraction, obtaining a juice, which needs to be refined and concentrated in order to crystallise the sugar in batch vacuum pans [60]. Evaporation is very important in sugar factories, it is the most energy consuming section of the plant and also provides steam to the rest of the plant equipment [61]. Evaporation is formed by several evaporators arranged in series, called a multi-effect evaporation, in which the steam produced in one effect is used in the next one, that operates at a lower pressure (Figure 2).…”

Section: Case Study 1: Evaporation Station Of a Real Sugar Plantmentioning

confidence: 99%

Knowledge based recursive non-linear partial least squares (RNPLS)

et al. 2020

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Soft sensors driven by data are very common in modern industry to predict critical variables which are difficult to measure using other variables that are relatively easier to obtain. The use of soft sensors implies some challenges, such as the predictor variables colinearity, the time-varying and possible non-linear nature of the industrial process. To deal with the first challenge, the partial least square (PLS) regression has been employed for many applications to deal with the linear variable relationships, with noisy and highly correlated data. However, the PLS model needs to deal with the other two issues: the non-linear and the time-varying side behaviour of the processes. In this work, a new knowledge based methodology for a recursive non-linear PLS algorithm (RNPLS) is systematized to deal with these issues. Here, the non-linear PLS algorithm is made by carrying out the PLS regression over the augmented matrix of input, which includes knowledge based non-linear transformations of some of the variables. This transformation depends on the type of the system, and takes into account the available knowledge about the process, which is provided by expert knowledge or em-

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“…˗ difficulty in determining the effective qualitative criterion to calculate the thermal process of evaporation in the mathematical support of the APCS [8,9].…”

Section: Improvement Of Mathematical Support and Implementation Of Modern Criteria Of Juice Quality In The Automated Process Control Systmentioning

confidence: 99%

Improvement of Mathematical Support and Implementation of Modern Criteria of Juice Quality in the Automated Process Control Systems at the Sugar Mill Evaporation Station

Liashenko¹

2020

IJETER

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The article considers the operation of sugar mills in Ukraine and reasons affecting their efficiency. It determines the influence of the evaporation station operation on the energy efficiency of the factory and on qualitative indicators of the products. The study shows the influence of changes in juice qualitative indicators that form during the evaporation on sugar quality. The directions in the work of the automated process control systems (APCS) are shown, which help to eliminate the problems that reduce the efficiency of the evaporation station. An important area in the APCS operation is the control of the product quality and energy efficiency regimes that ensure this quality. Due to the complexity of the juice evaporation in a multiple evaporation station and the influence of various indicators, both technological and qualitative, the main vectors of work in automated process control systems of the juice evaporation are determined. An important way to improve the efficiency of the evaporator is the development and application of mathematical software at the APCS, which will reflect the real changes during the evaporation; and accordingly the software and equipment that are used for the control of the evaporation process and will appropriately respond to these changes. The article considered the main criteria of sugar production efficiency, normative requirements, the oretical bases and practical experience of introduction and use of qualitative criteria in the APCS in the countries using energyefficient and competitive technologies of sugar production. The study justifies the efficiency of the proposed product qualitative criteria in the method and algorithm to calculate the thermal evaporation regime for the mathematical support of the automated process control system. Accordingly, there is reason to believe that the obtained qualitative criterion of efficiency, algorithm and method of calculation of the thermal process, which take into account both indicators of technological nature and indicators of the juice quality, can be used in mathematical software of the APCS at the sugar mill multiple evaporation station.

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Real Time Optimization for steam management in an evaporation section

Cited by 12 publications

References 32 publications

Determination and Estimation of the Influence of Different Types of Disturbances on the Thick Juice Colour

Determination and Estimation of the Influence of Different Types of Disturbances on the Thick Juice Colour

Knowledge based recursive non-linear partial least squares (RNPLS)

Improvement of Mathematical Support and Implementation of Modern Criteria of Juice Quality in the Automated Process Control Systems at the Sugar Mill Evaporation Station

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