Renewable Feedstock Charge Balancing for Phosphorus and Metal Removal
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Solution Overview
Problem
Existing methods are inefficient in removing dissolved phosphorus and metals from renewable feedstocks, particularly for hydroprocessing, leading to catalyst poisoning and processing challenges.
Innovation Solution
A method involving balancing the net elementary charge of a feedstock by mixing it with an elementary charge balancing component and subjecting it to a heat treatment at 180-400°C to precipitate phosphorus and metal compounds, followed by optional removal of these compounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional bleaching or heat treatment is used to remove phosphorus and metals from renewable feedstocks, then some impurities are reduced, but the removal efficiency is insufficient and catalyst poisoning still occurs
Solution Approach 1:
The patent changes the chemical parameters of the feedstock by adjusting the net elementary charge through addition of balancing components (acids or bases). This parameter change enables phosphorus and metals to be converted into forms that precipitate efficiently during heat treatment, achieving removal rates of 60-80% compared to conventional methods. The charge balancing creates optimal chemical conditions for impurity removal without catalyst poisoning.
Solution Approach 2:
The patent applies preliminary charge balancing to the feedstock before heat treatment. By adjusting the net elementary charge in advance through addition of acids or bases, the feedstock is prepared in an optimal state for subsequent heat treatment, ensuring that phosphorus and metals are in the correct chemical form for efficient precipitation and removal during the heat treatment step.
2Quantity of substance
If renewable feedstocks with high phosphorus and metal content are used directly for hydroprocessing, then feedstock availability is maintained, but catalyst deactivation and plugging issues occur
Solution Approach 1:
The patent transforms the chemical parameters of the feedstock by charge balancing, converting high phosphorus and metal content from harmful impurities into precipitable compounds. This parameter transformation allows direct use of high-impurity renewable feedstocks for hydroprocessing by converting the problematic composition into a removable form during heat treatment, maintaining feedstock availability while ensuring processing reliability.
3Reliability
If more aggressive treatment methods are applied to remove phosphorus and metals, then impurity removal efficiency increases, but process complexity and cost increase
Solution Approach 1:
The patent introduces an intermediary charge balancing component (acid or base) that mediates between the feedstock and heat treatment process. This intermediary adjusts the chemical environment to enable efficient phosphorus and metal removal during standard heat treatment, achieving 60-80% removal efficiency without requiring complex specialized equipment or multiple treatment stages.
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
Reduces dissolved phosphorus and metals by at least 60-80% compared to untreated feedstocks, enabling further processing without catalyst deactivation and plugging issues.
Implementation Method 1
subjecting the feedstock to be treated to a heat treatment at a temperature of 180-400° C. in order to precipitate compounds containing said phosphorus and said at least one metal
Implementation Method 2
subjecting the feedstock to be treated to a heat treatment at a temperature of 180-400° C. in order to precipitate compounds containing said phosphorus and said at least one metal
Data Source
AI summary
The present invention relates to a method for reducing an amount of dissolved impurities in an oxygen containing renewable feedstock, the dissolved impurities being selected from impurities comprising phosphorus and impurities comprising at least one metal. The method comprises obtaining a net elementary charge of a first feedstock; mixing the first feedstock with an elementary charge balancing component to obtain the feedstock to be treated, whereby the feedstock to be treated has a net elementary charge which is closer to zero net elementary charge than the net elementary charge of the first feedstock; and subjecting the feedstock to be treated to a heat treatment at a temperature of 180-400° C. in order to precipitate compounds containing said phosphorus and said at least one metal.