Two-Component Foam Inhibitor for Urea Humate Foaming
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Solution Overview
Problem
The production of urea humate is plagued by foaming issues due to the alkalinity of humic acid, leading to air bubbles, low particle strength, excessive dust, and reduced production efficiency, which affects both industrial and agricultural enthusiasm for urea humate use.
Innovation Solution
A two-component foam inhibitor comprising a foam control agent (lactic acid, acetic acid, and metal oxide) and a suspension adsorbent (vegetable oil, glycan, organic acid, and adsorbent) is used to prevent humate solution condensation and adsorb ammonia, reducing foaming during urea humate production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If the pH value of the humate solution is lowered to reduce foaming, then the foaming is reduced, but the humate solution condenses and precipitates
Solution Approach 1:
The patent introduces a two-component foam inhibitor system that acts as an intermediary between the humate solution and the urea melt. The first component suppresses foaming by interfering with ammonia gas release, while the second component prevents condensation and precipitation by maintaining solution stability. This mediator system resolves the contradiction by allowing pH adjustment for foaming control without triggering humate precipitation.
Solution Approach 2:
The patent applies parameter changes by using a two-component foam inhibitor system where the first component (foam suppressor) and second component (stability maintainer) work synergistically. By changing the approach from simple pH adjustment to a dual-component system, the patent achieves both foaming reduction and prevention of humate solution condensation, resolving the technical contradiction through parameter optimization and system transformation.
2Productivity
If humate solution is added to urea melt, then urea humate is produced, but serious foaming occurs leading to air bubbles and low particle strength
Solution Approach 1:
The patent applies preliminary action by adding the two-component foam inhibitor to the humate solution before it is introduced to the urea melt. The first component of the inhibitor is already in place to suppress foaming when the humate solution contacts the urea melt, preventing air bubble formation and ensuring strong granule structure from the beginning of the granulation process.
3Productivity
If humate solution is added to urea melt, then urea humate is produced, but excessive dust is generated reducing production efficiency
Solution Approach 1:
The two-component foam inhibitor acts as an intermediary that addresses multiple harmful effects simultaneously. The first component suppresses foaming and the second component stabilizes the solution, together reducing dust generation during the granulation process. This mediator system improves production efficiency by eliminating dust-related problems while maintaining productive urea humate formation.
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
The inhibitor effectively reduces foaming, improves particle strength, decreases dust generation, and enhances production efficiency by eliminating air bubbles and maintaining humate solution fluidity, thus improving the quality and output of urea humate.
Implementation Method 1
a foam control agent in the two-component foam inhibitor lowers a pH value of a humate solution to reduce the production of ammonia in a urea melt
Implementation Method 2
the lactic acid and acetic acid form complexes with metal ions in the metal oxide, and the complexes can avoid the combination of humic acid and metal ions
Implementation Method 3
A suspension adsorbent in the two-component foam inhibitor can adsorb free ammonia in the urea melt and ammonia generated after adding the humate solution
Data Source
AI summary
The present disclosure belongs to the technical field of value-added urea preparation, and specifically relates to a two-component foam inhibitor and a preparation method thereof, and a method for reducing foaming in production of urea humate. In the present disclosure, a foam control agent in the two-component foam inhibitor lowers a pH value of a humate solution to reduce the production of ammonia in a urea melt, and can avoid condensation of the humate solution caused by lowering the pH value and a difficulty in adding the humate solution to the urea melt. A suspension adsorbent in the two-component foam inhibitor can adsorb free ammonia in the urea melt and ammonia generated after adding the humate solution. In summary, the two-component foam inhibitor can effectively reduce a foaming reaction during production of the urea humate, avoid powdering of urea humate particles, and improve a production efficiency.