How to Design an Elevating System for High-Temperature Fertilizer?

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Discussion Overview

The discussion revolves around designing an elevating system for high-temperature fertilizer, focusing on specifications such as flow rate, height, temperature, and humidity. Participants explore various design ideas and considerations relevant to the project.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Homework-related

Main Points Raised

  • One participant suggests designing a bucket elevator, a pneumatic conveying system, and a vertical worm as potential solutions.
  • Another participant expresses a preference for the worm idea, referencing screw conveyors for construction inspiration.
  • A participant notes that their team and teacher were not in favor of the worm idea for the elevator but found it suitable for horizontal conveying.
  • Concerns are raised about the feasibility of designing an efficient pneumatic system for the specified tonnage rate.
  • Participants discuss the maximum tonnage rate found for existing systems, which is 200t/h.
  • Questions are posed regarding "Intrinsically Safe" systems and explosion risks associated with the fertilizer, suggesting that safety considerations may influence the choice of conveyor systems.
  • Another participant emphasizes the importance of chemical compatibility between the system components and the fertilizer.

Areas of Agreement / Disagreement

Participants express differing opinions on the suitability of various design ideas, with no consensus reached on the best approach. Concerns about safety and compatibility are acknowledged but not resolved.

Contextual Notes

Participants highlight limitations regarding the maximum tonnage rates of existing systems and the need for chemical compatibility, which may affect design choices. The discussion does not resolve the feasibility of the proposed systems.

Who May Find This Useful

This discussion may be of interest to students and professionals involved in engineering design, particularly in the context of material handling systems and safety considerations in industrial applications.

Materiae Amans
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Greetings,

For my school's project, I have to design an elevating system. Its main function is to continuously elevate a fertilizer disorderly and in bulk (rate of flow ~ 300 tonnes per hour, height of the elevator /course ~ 20 meters, the fertilizer is at 70°C, 5% humidity). My request is as follows : I'd like you guys to suggest any ideas for such a system, either simple or too complex to be considered. The main point is to correctly analyze the specifications and come up with several ideas for the system, to finally choose the most suitable one while justifying the rejection of the other options. Thanks in advance :)
 
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(1) We would like to hear about some of your own ideas on this .

(2) There is certain to be information about existing elevator designs online . Try searching on 'grain elevators' and similar things to begin with .
 
So, my ideas are :

- A bucket elevator
- A pneumatic conveying system
- A huge vertical worm
 
All those ideas are feasible .

I like the worm idea best . Search 'screw conveyor' on Google Images to get some construction ideas .

Sketch a preliminary design and we'll have a look at it .
 
I checked it out, but my teammates and teacher weren't fans of the idea for the elevator. On the other hand, it seems like a great idea for the horizontal conveying system we have to pick as well, it seems more broadly used for that matter.
 
Designing an efficient pneumatic system for such a high a tonnage rate would be difficult I think . So that just leaves the bucket elevator .
 
Indeed, the maximum I've found was 200t/h
 
Any other ideas in mind?
 
Materiae Amans said:
Its main function is to continuously elevate a fertilizer disorderly and in bulk
Has your class discussed "Intrinsically Safe" systems and issues regarding explosions with such systems? How might those considerations guide your choice of conveyor systems? You are not transporting gravel in this application...
 
  • #10
berkeman said:
Has your class discussed "Intrinsically Safe" systems and issues regarding explosions with such systems? How might those considerations guide your choice of conveyor systems? You are not transporting gravel in this application...
Not to my knowledge, what they pointed out is that the system should be chemically compatible with our fertilizer, which means the components shouldn't react with it...
 

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