Feedstock Purification via Calcium-Based Phase Separation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods are inadequate for purifying feedstocks with high impurity levels, making them unsuitable for use as fuel or chemical sources due to inability to remove impurities effectively, which hampers further processing such as catalytic cracking and results in significant oil losses.
Innovation Solution
A process involving the addition of a substance capable of forming a separate phase with impurities in the feedstock, followed by heating and optional water removal, allows for the separation and removal of impurities through techniques like filtration, centrifugation, or decantation, effectively purifying the feedstock.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional purification methods are used on feedstock with high impurity levels, then the process can proceed, but the purification effectiveness is insufficient and oil losses are significant
Solution Approach 1:
The patent applies parameter changes by modifying the chemical environment through pH adjustment and adding specific chemicals (calcium oxide, calcium hydroxide, calcium carbonate) to transform the state of impurities. This causes phosphorous compounds to precipitate and separates them from the feedstock, achieving effective purification while minimizing oil losses through controlled chemical reactions rather than physical removal methods
Solution Approach 2:
The patent uses calcium-based compounds as intermediary substances that react with phosphorous impurities to form separable precipitates. These intermediaries (CaO, Ca(OH)2, CaCO3) mediate the separation process by binding to phosphorous compounds, allowing effective removal without direct mechanical separation that would cause oil losses
2Quantity of substance
If feedstock with high impurity levels is used, then more feedstock can be processed, but the impurities poison catalysts and prevent further processing
Solution Approach 1:
The patent implements preliminary action by performing purification treatment before catalytic processing. The method removes phosphorous and metal impurities that would otherwise poison catalysts in subsequent cracking or hydrotreatment processes. This preliminary purification ensures catalyst reliability while allowing higher volumes of previously unusable feedstock to be processed
Solution Approach 2:
The patent converts the harmful effect of high impurity content into a benefit by using the impurities themselves as indicators for targeted removal. The phosphorous compounds, which would normally poison catalysts, are selectively precipitated using calcium-based reagents, transforming a harmful characteristic into a controlled separation process that enables catalyst protection
3Manufacturing precision
If acids are used to remove impurities, then impurity removal effectiveness improves, but carbonization of organic material occurs
Solution Approach 1:
The patent replaces strong acids with calcium-based compounds (CaO, Ca(OH)2, CaCO3) that serve as disposable reagents for impurity removal. These materials effectively precipitate phosphorous compounds without causing carbonization, providing a milder alternative that achieves purification without the harmful side effects of acid treatment
Solution Approach 2:
The patent changes the chemical parameter from acidic to alkaline/neutral conditions by using calcium oxide, calcium hydroxide, or calcium carbonate. This parameter change allows effective impurity removal through precipitation while avoiding the carbonization problem associated with acid treatment, maintaining organic material integrity
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 process significantly reduces impurity levels and oil losses, enabling the use of previously uneconomical feedstocks in catalytic processes like catalytic cracking and hydrotreatment, while minimizing entrained feedstock and losses.
Implementation Method 1
adding to the feedstock a substance capable of forming a separate phase with the impurities present in the feedstock
Implementation Method 2
heating the admixture b)
Implementation Method 3
removing the separated phase from the heat treated feedstock to obtain a purified feedstock
Data Source
AI summary
Present invention relates to a novel process for purification of feedstock for further use as a source of fuel or chemicals.