Outer Cooling Assembly for Refractory Structures

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Solution Overview

Problem

Current solutions for cooling structures with inner refractory lining in high-temperature processes are insufficient and inefficient, leading to overheating, structural risk, and frequent unit shutdowns for repairs.

Innovation Solution

An outer cooling assembly featuring a distributor (weir) for uniform water distribution and a collector (gutter) to direct heated water safely, ensuring laminar flow and visual monitoring of the overheated area.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If localized application of water is used to control temperature in overheated area, then temperature control in specific area is improved, but the cooling is irregular and insufficient, does not cover entire affected surface, and causes corrosion and safety risks

Engineering Contradiction:
Improvetemperature control in overheated areaVSAvoidcooling coverage and safety
Core Design Contradiction:
TemperatureVSReliability

Solution Approach 1:

The cooling system is divided into multiple nozzles arranged in a circular pattern around the structure, with each nozzle contributing to uniform cooling distribution. This segmentation allows the cooling effect to cover the entire affected surface rather than localized areas.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The cooling approach transitions from localized point application to circumferential distribution by arranging nozzles in a circular pattern around the structure. This dimensional change enables uniform cooling coverage across the entire surface perimeter.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Temperature

If steam jetting is applied to reduce temperature in overheated area, then temperature reduction is achieved, but visual monitoring becomes difficult and temperature control precision is insufficient

Engineering Contradiction:
Improvetemperature reductionVSAvoidvisual monitoring capability
Core Design Contradiction:
TemperatureVSDifficulty of detecting and measuring

Solution Approach 1:

Water is introduced as an intermediary cooling medium that flows uniformly over the structure surface. This allows the cooling effect to be visible and monitorable, unlike steam jetting, while still achieving effective temperature control.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Temperature

If water is applied to control temperature, then cooling effect is achieved, but water can reach nearby equipment causing corrosion and safety hazards

Engineering Contradiction:
Improvecooling effectVSAvoidcorrosion and safety risks to nearby equipment
Core Design Contradiction:
TemperatureVSObject-affected harmful factors

Solution Approach 1:

The cooling water is directed locally onto the overheated structure surface through precisely positioned nozzles. The water flows only where needed for cooling, preventing spread to nearby equipment and minimizing harmful effects.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The system uses hydraulic principles to control water flow through nozzles, ensuring water is delivered only to the structure surface and not to nearby equipment. The flow control prevents water dispersion that could cause corrosion hazards.

Inventive Principle:
Principle #29Pneumatics and hydraulics

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 assembly effectively maintains the surface temperature within acceptable limits, reduces the risk of structural failure, and postpones unit shutdowns until scheduled maintenance, while ensuring safety and visibility during cooling.

Implementation Method 1

the cooling fluid is caused to flow over the surface of the zone to which it is supplied

Methodology Applied
Scientific EffectConvection: Convection

Implementation Method 2

flowing over the surface of the heated structure in a laminar manner

Methodology Applied
Scientific EffectHeat transfer: Conduction (thermal)

Data Source

PatentUS20250146755A1Outer Cooling Assembly for Structures with Inner Refractory Lining
Publication Date: 2025.05.08 PETROLEO BRASILEIRO SA PETROBRAS
  • US20250146755A1 patent drawing
  • US20250146755A1 patent drawing
  • US20250146755A1 patent drawing

AI summary

The present invention is applied in the field of heat exchange and temperature regulation and, more specifically, relates to an outer cooling assembly for structures with inner refractory lining, the outer cooling assembly comprising: a distributor arranged on the outer side and around an upper section of a structure with inner refractory lining; and a collector arranged below the distributor and on the outer side and around a lower section of a structure with inner refractory lining; wherein the distributor comprises a fixing plate and cooling fluid injection members arranged on the outer side and around the fixing plate and configured to eject cooling fluid onto the outer surface of the structure.