Double-Plate Distributor for Precise Polymer Devolatilization Heating

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Solution Overview

Problem

Existing devolatilization apparatuses, particularly static ones, struggle with temperature control of temperature-sensitive polymer compositions, leading to non-optimal devolatilization results and increased operational costs due to inefficient heat management.

Innovation Solution

A heatable distributor with a hollow double-plate assembly is introduced, allowing precise temperature control of the devolatilization process by using a vessel with a void chamber and channels connected to a heat medium inlet and outlet, ensuring uniform heating of the composition through falling strands, thereby optimizing the devolatilization process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by stationary object

If a static devolatilization apparatus is used, then energy consumption is reduced and maintenance requirements are minimized, but temperature control precision deteriorates leading to non-optimal devolatilization results

Engineering Contradiction:

Improveenergy consumptionVSAvoidtemperature control precision

Core Design Contradiction:

Use of energy by stationary objectVSManufacturing precision

Solution Approach 1:

The distributor is divided into multiple heating zones with independent temperature control, allowing each zone to be optimized for specific devolatilization requirements while maintaining overall system simplicity and energy efficiency

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The distributor serves multiple functions: it distributes the polymer composition across the devolatilization surface, provides precise temperature control through integrated heating elements, and maintains thermal stability throughout the process, eliminating the need for separate temperature control devices

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Productivity

If temperature is increased to accelerate devolatilization, then diffusion rate of volatile components improves, but polymer degradation risk increases

Engineering Contradiction:

Improvedevolatilization rateVSAvoidpolymer degradation

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

Different sections of the distributor provide different temperature levels through independent zone control, allowing aggressive heating in areas where rapid devolatilization is needed while maintaining lower temperatures in zones where polymer stability is critical

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The system dynamically adjusts temperature parameters across different zones and time periods, starting with moderate temperatures to prevent degradation and progressively increasing to optimal devolatilization temperatures as the process advances

Inventive Principle:

Principle #35Parameter changes

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 heatable distributor enables efficient and cost-effective devolatilization of temperature-sensitive polymers by maintaining optimal operating temperatures, reducing volatile component content to less than 10 ppm, and minimizing capital expenditures.

Implementation Method 1

The hollow space is connected with an inlet for heat medium and with an outlet for heat medium

Methodology Applied

Scientific EffectHeat conduction: Conduction (thermal)

Implementation Method 2

the component to be evaporated needs to have a higher partial pressure or higher thermodynamic activity, respectively, than the polymer

Methodology Applied

Scientific EffectEvaporation: Evaporation

Implementation Method 3

the component to be evaporated needs to have a higher partial pressure or higher thermodynamic activity, respectively, than the polymer

Methodology Applied

Scientific EffectVapor pressure: Vapour Pressure

Implementation Method 4

the component to be evaporated needs to be able to diffuse through the polymer composition to the phase boundary

Methodology Applied

Scientific EffectDiffusion: Diffusion

Data Source

PatentUS20260108828A1A distributor for a devolatilization apparatus comprising a hollow double-plate assembly

Publication Date: 2026.04.23 SULZER MANAGEMENT AG

AI summary

A heatable distributor includes a vessel with an upstream portion and an adjacent downstream portion, the upstream portion includes a first lateral end with an inlet and a second lateral end connected with the downstream portion. the downstream portion includes a first lateral end and a second lateral end, the first lateral end connected with the second lateral end of the upstream portion, and the downstream portion includes a hollow double-plate assembly including an upper plate and a lower plate spaced apart so that a void chamber is defined therebetween. Each plate includes openings, each opening of the upper plate is surrounded by a wall extending through the void chamber and surrounding an opening of the lower plate to form channels being fluid-tightly separated from the hollow space and, the hollow space is connected with an inlet for a heat medium and with an outlet for the heat medium.