Course detail

# Chemical Engineering for the Environment I

FCH-MC_CHI1_ZAcad. year: 2023/2024

Chemical and biochemical processes and apparatus fundamentals. Lectures are complemented by the computational and laboratory exercises. Mass balance, fluid flow, pumping, filtration, fluidization, mixing and particulate solids processing (characterisation of particulate systems, grain size measurment, comminution, separation, conveying systems, mechanics of particulate solids, storage systems).

Language of instruction

Number of ECTS credits

Mode of study

Guarantor

Department

Entry knowledge

Physics - basis of mass point, hydrodynamics, thermodynamics and diffusion basis;

Instumentaions - physics quantities measurement, transmission and processing;

Chemical engineering I.

Rules for evaluation and completion of the course

Partcipation on the prescribed Calculation exs, reports of all Calc. exs in the desiderative quality, the written part of Exam on the 25 points level min. of the 50poits sum-

Aims

Students will obtain the basic knowledge about the mathematical aparatus of the Fluids and Particle Solids Unit operations of Chemical Engineering which take place in the design and pass judgments of the separate processes of the chemical and other production technologies in the laboratory and production plant size as well.

Study aids

Prerequisites and corequisites

Basic literature

Richter J., Stehlík P., Svěrák T.: Chemické inženýrství, VUT v Brně, 2004. (CS)

Novák V., Rieger F., Vavro K.: Hydraulické pochody v chemickém a potravinářském průmyslu, SNTL Praha (1989) (CS)

Míka V.: Základy chemického inženýrství, SNTL Praha, 1977 (CS)

Gavin Towler: Chemical Engineering Design, Principles, Practice and Economics of Plant and Process Design, Elsevier 2012, ISBN: 978-0-08-096659-5 9;"Gavin Towler: Chemical Engineering Design, Principles, Practice and Economics of Plant and Process Design, Elsevier 2012, ISBN: 978-0-08-096659-5";2012;;1;rozšiřující;;cs (CS)

Bafrnec M., Báleš V., Langfelder I., Longauer J.: Chemické inžinierstvo I, Malé centrum Bratislava, 1999 (CS)

Recommended reading

eLearning

**eLearning:**currently opened course

#### Type of course unit

Lecture

Teacher / Lecturer

Syllabus

2. Energy flow balance; Bernoulli's equation; continuity equation; Reynolds criterion and its application in processes; branched systems.

3. Presure losses in piping systems; the expression of losses in equivalent lengths; Navier-Stockes equation; Darcy's equation; Moody's diagram; basics of aerodynamics.

4. Pumping of liquids; working height of the pump; pipeline characteristics; placing the pump in the pumping process; head height; cavitation; power and efficiency of the pump; methods of controlling the flow of liquids by the pump; types of hydrodynamic and volumetric pumps.

5. Sedimentation processes; Stokes' relationship; Archimed Criterion; the procedure for calculating the sedimentation speed; nomograms of sedimentation rate calculation and minimum particle size of the sedimentation particle; correction of sedimentation velocity for non-particle particles; settling of the particles in the suspension; continuous sedimentation equipment in practice.

6. Mixing; perfectly segregated, mixed and random mix; issues of sampling and homogeneity assessment; mixing devices; the criteria used to calculate the homogeneity, mixer power, heat and mass transfer rate; splitting types of mechanical agitators by purpose and mixing modes; dissipation of mechanical energy; laboratory mixers; trends of sparkling mixers; static mixer zones; kinetics of homogenization;

7. Particulate matter; parameters specifying a particular system; granulometry and an overview of granulometric methods used; conveyors and particle dispensers; disintegration of the solid phase; jet milling; media mills; calculations of grinding energy; grinding bodies; nanomaterials and applications of nanomaterials; basics of mechanochemistry; basics of grinding ingredients.

8. Flow through a porous partition; the equivalent diameter of the canvases; definition of specific surfaces; Ergun formula for coefficient of hydrodynamic resistance; two-phase flow columns; structured and bulk layers; Ramm diagram; application of porous layers in filtration, chromatography and TWC automotive catalysts; logic of asymmetric porous layers;

9. Fluidization; fluidization columns and fluidization modes; fluid combustion; pressure drop in the fluidized bed; ripple; dependence of the pressure and expansion of the fluid bed; mixed fluid layers.

10. Pressure filtration, general filtration equation; a partial solution for constant pressure filtration and a constant flow rate; graphical solutions of filter constants; types of filtration according to the size of the separated particles.

11. Heat sharing; basic concepts of heat sharing; Heat Transfer by Radiation, Stefan - Boltzmann's Law; absolutely black and white bodies; emissivity; heat sharing on scaling; general heat conduction equation; coefficients of thermal and thermal conductivity; steady heat conduction for planar and circular surfaces; steady heat conduction with a composite sandwich surface; thermal insulation of pipes; the problem of heat resistance of windows.

12. Convection heat sharing; Basic criteria for calculating heat transfer; convection natural and forced; the placement of physical constants into critical relationships.

13. Heat transfer; heat sharing during phase change; condensation processes and their calculations, Nusselt's relationship; var kapaliny; the heat flow / heat transfer coefficient of combustion at the boiler temperature gradient; exchanging and regenerative heat exchangers and their calculations; types of exchangers in practice.

Guided consultation in combined form of studies

Teacher / Lecturer

eLearning

**eLearning:**currently opened course