Perforated Distillation Column Stripping Device for Fouling Prevention
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Solution Overview
Problem
The existing steam stripping processes for removing unreacted monomers from polymerization reaction products suffer from fouling phenomena due to bubble formation, leading to reduced process efficiency and increased device and energy costs.
Innovation Solution
A novel stripping device and method that integrates a perforated distillation column with a stripping vessel and includes spray nozzles at the upper portion of the stripping vessel to prevent bubble formation and reduce the need for additional devices and heat exchangers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-temperature steam is injected into the stripping vessel containing additives, then the unreacted monomer is effectively removed from the reaction product, but bubbles are formed causing fouling phenomenon in steam transfer lines and heat exchangers
Solution Approach 1:
The invention extracts and removes the harmful bubbles formed during steam stripping before the steam enters the transfer lines and heat exchangers. A bubble removal device is installed in the steam transfer line to separate and eliminate bubbles from the steam stream, preventing fouling while maintaining effective monomer removal in the stripping vessel
Solution Approach 2:
The invention introduces an intermediary bubble removal device as a mediator between the stripping vessel and the heat exchanger. This device acts as an intermediate stage that processes the steam by removing bubbles, allowing the steam to be cleanly transferred to subsequent equipment without causing fouling
2Reliability
If a buffer tank and multiple devices (pipes, pump, heat exchanger) are used to continuously feed steam to the distillation column, then continuous operation is achieved, but device cost and energy cost are increased
Solution Approach 1:
The invention merges the buffer tank function directly into the distillation column by providing a liquid collection space at the bottom of the column. This integration eliminates the need for a separate buffer tank and reduces the number of intermediate devices, achieving continuous operation with simpler equipment
Solution Approach 2:
The distillation column is designed to perform multiple functions: it serves as both the distillation unit for separating monomer and water, and as a steam stripper for removing unreacted monomer from the reaction product. The liquid collection space at the bottom provides continuous operation capability, making the column a multi-functional device that replaces several separate units
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 integrated stripping device and method effectively prevent fouling, enhance process efficiency, and decrease device and energy costs by eliminating the need for separate buffer tanks, pumps, and heat exchangers.
Implementation Method 1
one or more spray nozzles provided at an upper portion of the stripping vessel... suppressing bubbles formed by injection of the high-temperature steam into the stripping vessel
Implementation Method 2
a distillation column of which at least a part or the entirety of a lower portion is perforated
Implementation Method 3
steam including the unreacted monomer and a polymer slurry are separated through a steam stripping process using a stripping vessel
Implementation Method 4
the steam including the unreacted monomer is condensed through a heat exchanger
Implementation Method 5
separated into the unreacted monomer and water through a subsequent distillation process
Data Source
AI summary
The present disclosure relates to a stripping device and a stripping method, and more particularly, to a stripping device including: a distillation column of which at least a part or the entirety of a lower portion is perforated; a stripping vessel integrally connected to the lower portion of the distillation column; and one or more spray nozzles provided at an upper portion of the stripping vessel, and a stripping method using the same.