Analysis and Optimization of Drying of Green Bricks in a Tunnel Dryer

Mançuhan, Ebru

doi:10.1080/07373930902827692

Cited by 16 publications

(5 citation statements)

References 5 publications

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“…Research [5] considered the influence of drying parameters on the properties of the obtained ceramic samples, namely: use a higher air flow rate. This avoids the risk of condensation in the tunnel dryer for green brick drying, however, the higher air flow speeds up the drying rate, thus causing damage.…”

Section: -9969mentioning

confidence: 99%

“…The problem of radioactive waste (RW) is an extremely complex issue of nuclear activity in general and nuclear energy in particular [1]. The experience of eliminating the consequences of accidents at the Chornobyl and Fukushima nuclear power plants [2][3][4][5][6][7] indicates that the existing system of radioactive waste management in real…”

Section: Introductionmentioning

confidence: 99%

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Increase of cracking resistance of ceramic masses of low-plastic clay

Subbota

Spasonova

Sholom

2023

TAPR

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The object of research is the physical and chemical processes of forming the structure and properties of ceramic masses based on local low-melting clay raw materials of the Kyiv region of Ukraine by adjusting the chemical and mineralogical composition and technological regimes. Building ceramic materials are durable, ecological and natural. They provide increased comfort of buildings due to the creation of a favorable temperature and humidity climate of the premises. When using low-melting raw materials in production, there is a need to develop ways and methods to improve the quality of building ceramics. The efficiency of the manufacture of ceramic products largely depends on the processes that occur during drying. This is of crucial importance and affects the quality of finished products and accounts for 10–12 % of the total cost of finished products. Polymineral clay compositions with the addition of natural mineral raw materials are mainly used for the production of construction materials. For effective use of these materials, it is necessary to study their technological properties. Therefore, the question of researching masses based on low-melting clays with high sensitivity to drying, and the use of zeolite-containing mineral rock as an admixture is relevant. This will allow expanding the nomenclature of building ceramics products. Modern physico-chemical and physico-technological methods of research of raw materials and masses based on them during drying were used to solve the task of obtaining ceramic material from local raw materials with the use of a non-deficient natural additive of zeolite-containing rock as an admixture. The conducted studies indicate that the addition of zeolite-containing rock can be used to improve the drying properties of ceramic masses based on low-melting clays. Adding admixture of zeolite-containing rock also increased the compressive strength of finished products, which ensures defect-free transportation of products to other technological operations.

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Section: -9969mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Increase of cracking resistance of ceramic masses of low-plastic clay

Subbota

Spasonova

Sholom

2023

TAPR

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“…Therefore, the optimization studies aim at preserving well-controlled drying rates along the tunnel dryer, which are milder or harsher, depending on whether the clay body fracture risk is high, while consuming the minimum amount of thermal energy in the burners. Compared to other contributions investigating industrial-scale ceramic tunnel dryers, 17,20 this work prioritizes product quality for the development of drying strategies and operating policies through optimization. The rest of this article is organized as follows: Section 2 presents the design and operational characteristics of the industrial tunnel dryer under consideration.…”

Section: Introductionmentioning

confidence: 99%

“…15 Mabrouk et al 16 developed a numerical model to predict the air temperature and the moisture content of the material along a tunnel dryer. Mancuhan 17 employed linear programming to find the optimal values of the hot and outdoor air flowrates and stack temperature so as to avoid the risk of condensation in a tunnel dryer used for brick processing. Salagnac et al 18 conducted a numerical study with the aim of improving the performance of a dryer, while respecting the material constraints.…”

Section: Introductionmentioning

confidence: 99%

Optimal Tunnel Dryer Operating Strategies for the Production of Ceramic Roof Tiles under Tight Quality Considerations

Arvanitidis

Kostoglou

Georgiadis

2023

Ind. Eng. Chem. Res.

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This work presents a model-based approach to systematically derive optimal operating policies for an existing industrial-scale tunnel dryer. The primary focus of the study is to control the shrinkage stage, during which product fracture risk is highest, with the minimum energy cost possible. First, the steady-state dryer operation is optimized with the attained operating policy resulting in 1.5% fuel economy, while assuring product quality. The dryer operation is then optimized at transient state, investigating two case studies, with the derived optimization results being thoroughly compared with those attained when no control actions are taken. The first case considers a 9.57% increase in dryer productivity. It is demonstrated that the derived operating policy guarantees a well-controlled drying process, with the minimum extra fuel consumption being about 7.7%. The second case study considers the coexistence of two different raw clay-based ceramics in the dryer. Once again, the optimal operating scheme assures the final product quality, but with a minimum thermal energy consumption increase of 3.4%.

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“…The applied system has successfully controlled the inlet chamber dumper position. The condensation problem in the stack tunnel was analyzed by Mancuhan (2009). The use of a simulation model, based on the semi-conjugated Kitcher receding model, for optimization of industrial masonry clay dryers was reported in (1997) by Velthius.…”

Section: Introductionmentioning

confidence: 99%

Optimize, Upgrade or Invest in a Novel Dryer? – A Brick Factory Case Study

Vasić¹

2021

IJMEM

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Drying has an enormous impact on the quality of final masonry clay elements. The accumulated knowledge about modeling the drying process, as well as the registered progress in computing the coupling between the heat and mass transfer during the last decade has reached the applicative industrial level. The available novel commercial drying solutions have dropped the drying cycle to 5 hours for hollow clay products and up to 9 hours for clay blocks of large size and weight. The ability to speed up the drying process also strongly depends on the properties of the raw materials. The decision on optimization of the existing dryer and its upgrade or investment in a novel drying facility must be experimentally validated. Results of the one-month monitoring and analysis of the production process in one Serbian brick factory including the material and energy balances are given in this paper. Based on the collected data, raw material limitations and costs of the novel dryer the existing tunnel dryer upgrade and the minimization of the "false" ambient air into the dryer are proposed.

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Analysis and Optimization of Drying of Green Bricks in a Tunnel Dryer

Cited by 16 publications

References 5 publications

Increase of cracking resistance of ceramic masses of low-plastic clay

Increase of cracking resistance of ceramic masses of low-plastic clay

Optimal Tunnel Dryer Operating Strategies for the Production of Ceramic Roof Tiles under Tight Quality Considerations

Optimize, Upgrade or Invest in a Novel Dryer? – A Brick Factory Case Study

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