Angled Primary Air Distribution in Coke Oven Gas Space

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Solution Overview

Problem

Existing coke oven systems require multiple opening ports to achieve even distribution of primary air, which is inefficient and can be improved with a system that distributes air at a chamfered angle for better coverage.

Innovation Solution

A distribution system that introduces primary air through opening ports in the coke oven top at an angle greater than 0° relative to the perpendicular, allowing for even distribution in lateral directions using gas-conducting devices and angled openings, which can be configured as channels, disks, or U-tube shapes, and equipped with blowers or twisting elements for enhanced air mixing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If multiple opening ports are used to achieve even distribution of primary air, then the distribution uniformity is improved, but the device complexity increases

Engineering Contradiction:
Improvedistribution uniformityVSAvoidnumber of opening ports
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The single opening port is segmented into multiple gas-conducting devices (nozzles, channels, or U-tubes) that are integrated within it. Each gas-conducting device directs air at different angles to achieve even distribution across the coke cake surface, effectively dividing the function of multiple ports into a consolidated structure with internal segmentation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The gas-conducting devices introduce primary air not only in the vertical direction but also in lateral horizontal directions at chamfered angles. This multi-dimensional air introduction approach enables even distribution across the coke cake surface while using fewer opening ports, transitioning from one-dimensional vertical injection to three-dimensional angled injection.

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

2Manufacturing precision

If multiple opening ports are used to achieve even distribution of primary air, then the distribution uniformity is improved, but the ease of operation deteriorates

Engineering Contradiction:
Improvedistribution uniformityVSAvoidease of operation
Core Design Contradiction:
Manufacturing precisionVSEase of operation

Solution Approach 1:

Multiple gas-conducting devices are merged into a single integrated opening port structure. This consolidation maintains the air distribution functionality of multiple ports while simplifying the operational interface, as only one opening port needs to be accessed and maintained rather than multiple separate ports.

Inventive Principle:
Principle #5Merging (Combining)

3Device complexity

If primary air is introduced vertically onto the coke cake, then the device complexity is reduced, but the distribution uniformity deteriorates

Engineering Contradiction:
Improvestructure simplicityVSAvoiddistribution uniformity
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The gas-conducting devices are designed with asymmetric chamfered angles relative to the vertical axis. This asymmetric geometry causes the primary air to be directed at oblique angles rather than strictly vertically, creating a fan-like distribution pattern that covers a wider area and achieves more uniform distribution across the coke cake surface.

Inventive Principle:
Principle #4Asymmetry

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 solution enables efficient and even distribution of primary air in the gas space above the coke cake with a reduced number of opening ports, improving heat distribution and energy utilization while being resistant to high temperatures and chemical influences.

Implementation Method 1

these opening ports have a distribution system that introduces the inflowing primary air at a chamfered angle into the gas space above the coke cake

Methodology Applied
Scientific EffectFluid flow:

Implementation Method 2

the coking gas developing during coal carbonization is brought in contact with the desired quantity of primary air for partial combustion of coking gas

Methodology Applied
Scientific EffectConvection: Convection

Implementation Method 3

combustion with primary air is incomplete and occurs in a gas-filled space above the coke cake

Methodology Applied
Scientific EffectCombustion: Combustion

Implementation Method 4

coking gas is brought in contact with the primary air for partial combustion of coking gas

Methodology Applied
Scientific EffectExothermic reaction: Exothermic Reaction

Implementation Method 5

heat from combustion is additionally utilized to generate energy

Methodology Applied
Scientific EffectThermal radiation: Thermal Radiation

Implementation Method 6

A more homogeneous heat distribution of the entire coke cake is achieved in this manner

Methodology Applied
Scientific EffectConvection: Convection

Data Source

PatentUS9284491B2Device for a directed introduction of primary combustion air into the gas space of a coke battery
Publication Date: 2016.03.15 THYSSENKRUPP IND SOLUTIONS AG
  • US9284491B2 patent drawing
  • US9284491B2 patent drawing
  • US9284491B2 patent drawing

AI summary

A device for a directed gas routing of primary air into a coke chamber oven is disclosed. The primary air is conducted through the coke chamber top into the gas space of a coke oven battery and is laterally deflected as it enters into the gas space of the coke chamber. Also disclosed is a method for lateral deflection of primary air as it enters into the coke oven chamber, thus improving the distribution of the primary air in the coke oven chamber.