Agitated Thin Film Evaporator: A Project Report

Introduction

ATFD is stands for evaporation of water/solvents to make concentrated liquid to dry powder or flakes. ATFD is the ideal apparatus for continuous processing of concentrated material to dry solids. ATFD is consist of cylindrical, vertical body with heating jacket and a rotor inside of the shell which is equipped with rows and pendulum blades all over the length of the dryer. The hinged blades spread the wet feed product in a thin film over the heated wall. The turbulance increases as the product passes through the clearance before entering calming zone situated behind the blades as the heat will transfer from jacket to main shell under the smooth agitation water/solvent will evaporate and liquid will convert to slurry, to cake or to dry powder or flex. The vapors produced rise upward, counter-curruently to the liquid and pass through Cyclone separator mounted of vapor outlet of ATFD. Further these vapor will be condensed in condenser and recovered as condensate. System will be Operated under vacuum for temerature sensitive products and atmospheric condition for normal drying.

Understanding About Design Thinking

Design thinking as the name suggests, to think about anything which can change the scenario of present. This can be based on anything, it can be new or can be modification of existing ones. According to our group, we decided to implement the newer design of the Agitated thin film dryer which will decrease its operational cost and will be efficient in its work. It will make a good substituent for ordinary dryers and crystallisers. It will promote working for clean and green environment.

Importance Of Design Thinking

Design Thinking is relatively a fun. In this process we are able to explore our mind the about to how much extent we can think about a specific prototype on which we are going to work. Here we can understand each other’s ideas and can easily have an outlook towards the problem and can have an easier approach to the solution. It helps us to learn how to compile a bunch of ideas together to get a best of it. It involes the spirit of teamwork.

Literature Surveya. E. I. O. U Mapping

The A. E. I. O. U is the perfect platform which provides us better idea about areas of concern after having a survey of a specific arena. This provides us a basic idea that where we have to focus on and what are the problems faced by the users and the stakeholders. It helps us to collect all theproblems of the particular device, installation, machine etc. , and what are its adverse effects onthe environment.

O. U Mappingideation Canvas

It is the canvas which helps us to revalidate all the things which we have seen the industry and to list out the cons and pros of it.

PEOPLE. It consists of all the people present at the factory and how it is useful to them.

1. Owner
2. Engineers
3. Industrialists
4. Municipal Corporation
5. Visitors
6. Dealers
7. Traders
8. Customers
9. Supervisors
10. Workers
11. Clients

Activities

What are the activities that are performed by the point of concern i. e, the project on which we are working on.

1. Evaporation
2. Purification
3. Removal of volatile impurities
4. Thermal separation
5. Contributor to zero liquid discharge
6. Drying
7. Distilled water generation
8. Sludge drainage
9. Environment friendly
10. Satisfying customers
11. Reduction in power consumption
12. T. D. S removal

Situation/Context/Location

The area at which it is most necessary and where and on what conditions it should be installed, what would be its location of installation and why would be installing it.

1. For water removal from impure water
2. Removal of waste
3. In order to get water as the constituent
4. For the recovery of water from sludge
5. Recycles the water for factory’s uses
6. Facilitating water to workers, clients etc.
7. Recovery of waste salts available in tray.

Props

What are the things which were present there at the site

1. Stainless steel
2. Mild steel
3. Impeller
4. Galvanised iron
5. Welding machine
6. Lathing machine
7. Motor
8. Sheet cutter
9. Spray painting machine
10. Cranes
11. Rollers
12. Pipes
13. Tubes
14. Vapour separators
15. Condensers
16. Pumps

Ideation Canvas

Recovers extra bottoms product from overhead. In twentieth Century the expansion within the Chemical Sector was enhanced by Chemical industries increasing there was tremendous increasing in Chemical Waste and sub-product. it had been tough to gather and store these chemicals. it had been additionally harmful to nature and humans. it had been necessary to scale back the increasing rate of chemical and dispose it properly by order of chemical of united nation, that why slurry convert liquid chemical into solid powder. Lateran, some improvement enforced on the evaporator style to form it’s a lot of economical and reliable.

The design of agitated film appliance (ATFD) is tough each automatically and method engineering purpose of work describes the essential flow pattern in ATFD in terms of low wave and its transformation on the appliance height. The result of flow, jacket aspect heating medium temperature and speed of the rotor has been studied for a pilot scale ATFD. 3. 2 Bishop P. Cheremisinoff. We might organize water treatment technologies into 3 general areas: Physical ways, Chemical ways, and Energy Intensive ways. Physical ways of waste matter treatment represent a body of technologies that we tend to refer mostly to as solid-liquid separations techniques, of that filtration plays a dominant role. Agitated thin film evaporator square measure enticing for the concentration, distillation, husking or deodorization of liquids in broad form of chemical-process-industries applications wherever the method streams square measure temperature sensitive, viscous, or tend to foul or foam. once this sort instrumentation will appear to be the proper selection in an exceedingly given scenario, the common, and sound, approach is to raise associate degree evaporator manufacturer to conduct associate degree analysis associate degreed build an instrumentation quotation. The thin-film method - familiar to associate degree understanding of what a thin-film evaporator is and the way it works. A vertical thin-film evaporator consists of 2 major assemblies: a heated body and a close-clearance rotor. the method fluid enters the unit tangentially on top of the heated zone, and is distributed equally over the inner surface of the body wall by a distribution ring mounted on the rotor. The rotor blades unfold the merchandise over the entire heated wall, and generate extremely flow conditions within the skinny layer of liquid. the merchandise spirals down the wall, whereas the turbulent conditions developed by the rotor blades generate optional heat flux, a pace evaporating volatile elements. The ensuing vapours flow upward through the unit into a centrifugal setup, that returns entrained droplets or froth directly back to the heating zone. Clean vapor outlet prepared for compressing or additional process.

Meanwhile, the targeted liquid stream leaves the evaporator through its bottom round shape outlet. Continuous outlet by the bow waves generated by the rotor minimizes surface fouling of the thermal wall, wherever the targeted liquid or residue is most prevailing. Thin-film evaporators square measure commercially obtainable in varied basic or commonplace versions. they will have vertical or horizontal styles, with cylindrical or tapered bodies and rotors. The rotor will use any of many zero clearance styles, or a rigid fastened clearance style, The fundamentals for rescale from the manufacturer’s pilot testing program square measure identical for all.