Phosphate Fertilizer Micronutrient Distribution via Segmented Reactors
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Solution Overview
Problem
It is challenging to uniformly incorporate micronutrients into fertilizers in small quantities due to their very small requirements, making it difficult to deliver them uniformly to plants.
Innovation Solution
A method involving the production of phosphate fertilizers in a pipe cross reactor and a pre-neutralizer, where ammonia is added to react with phosphate, and micronutrients are incorporated into the phosphoric acid to produce enriched acid, allowing for even distribution of micronutrients like zinc, manganese, iron, copper, molybdenum, boron, chlorine, cobalt, and sodium within the fertilizer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If micronutrients are incorporated into fertilizers in very small quantities, then the fertilizer meets plant requirements, but it becomes difficult to deliver small amounts of micronutrients uniformly to each plant
Solution Approach 1:
The phosphate fertilizer production is divided into two separate portions: a first portion produced in a pipe cross reactor and a second portion produced in a pre-neutralizer. This segmentation allows each reactor type to be optimized for its specific function, with the pre-neutralizer specifically designed to incorporate micronutrients uniformly into the phosphate mixture, thereby achieving both small quantity incorporation and uniform distribution.
Solution Approach 2:
The pre-neutralizer acts as an intermediary device between the micronutrient source and the final fertilizer product. It receives micronutrients along with phosphate and ammonia, and facilitates their uniform incorporation into the fertilizer matrix before the final granulation step, ensuring even distribution of trace amounts of micronutrients throughout the fertilizer.
2Device complexity
If a single reactor type is used for phosphate production, then the process is simpler, but it is difficult to achieve both high productivity and uniform micronutrient distribution
Solution Approach 1:
The phosphate production process is segmented into two parallel streams using different reactor types. The pipe cross reactor handles the majority of phosphate production for high productivity, while the pre-neutralizer handles a portion specifically optimized for uniform micronutrient incorporation. This segmentation allows each reactor to be optimized for its specific role, achieving both high overall productivity and uniform micronutrient distribution.
Solution Approach 2:
The system uses multiple reactor types (pipe cross reactor and pre-neutralizer) that can both produce phosphate fertilizer, providing multi-functionality. This allows the system to simultaneously achieve high productivity through the pipe cross reactor and uniform micronutrient distribution through the pre-neutralizer, with both contributing to the final fertilizer product.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method ensures that micronutrients are evenly distributed throughout the fertilizer, enabling uniform delivery to plants, with the micronutrients being present in amounts of 0.01 wt. % to 5 wt. %, effectively addressing the challenge of small quantity distribution.
Implementation Method 1
Ammonia is added to the granulator to react with the first and second portions of the phosphate
Implementation Method 2
a micronutrient is added to phosphoric acid to produce an enriched acid
Data Source
AI summary
According to a method of producing a phosphate fertilizer, a first portion of the phosphate is produced in a pipe cross reactor, and a second portion of the phosphate is produced in a pre-neutralizer. Both the first and second portions of the phosphate are supplied to a granulator. Ammonia is added to the granulator to react with the first and second portions of the phosphate. To produce the first portion of the phosphate, a micronutrient is added to phosphoric acid to produce an enriched acid, and the enriched acid and ammonia are added to the pipe cross reactor where they are allowed to react to produce ammonium phosphate.