Reactor Gas Distribution for Uniform Pyrolysis
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Solution Overview
Problem
Existing pyrolysis processes face challenges in achieving even gas distribution and control within the reactor, leading to uneven processing and increased process costs due to regions of the material bed being unevenly processed, which affects the quality of the pyrolysis products.
Innovation Solution
The implementation of a gas distribution system with a centrally arranged gas distribution pipe and gas inlet units at the bottom of the reactor, which generates a pressure fall across the gas inlet openings exceeding the pressure fall within the material bed, ensuring even gas distribution and monitoring, and includes gas outlet units on the jacket for efficient gas flow control, preventing re-condensation of vaporized pyrolysis oil.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a gas distribution pipe with inlet units is used to supply gas to the material bed, then gas flow control is improved, but uneven gas distribution occurs in certain regions of the material bed
Solution Approach 1:
The gas distribution system is segmented into multiple inlet units arranged around the peripheral surface of the reactor, with each inlet unit having multiple openings distributed over the peripheral surface. This segmentation allows gas to be supplied to different regions of the material bed more uniformly, preventing the gas from following paths of lowest resistance and ensuring even processing throughout the entire bed.
2Ease of operation
If gas is supplied through a centralized distribution pipe, then gas supply regulation is improved, but processing time increases due to uneven gas distribution
Solution Approach 1:
The gas distribution system transitions from a single centralized pipe to multiple inlet units arranged around the peripheral surface of the reactor, distributing gas supply across multiple spatial dimensions. This dimensional distribution ensures that gas reaches all regions of the material bed simultaneously and uniformly, reducing the processing time required for complete pyrolysis.
3Device complexity
If the gas distribution system is simplified, then device complexity is reduced, but control and monitoring of operating parameters becomes difficult
Solution Approach 1:
The gas distribution system incorporates monitoring capabilities that allow real-time detection and measurement of gas flow rates, pressure drops across the material bed, and operating conditions. This feedback mechanism enables operators to detect and correct uneven gas distribution or abnormal processing conditions, maintaining high manufacturing precision without requiring an overly complex system structure.
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 approach results in more efficient and complete pyrolysis, producing a product with minimal residues and high-quality carbon black, where all oil is vaporized and removed with the process gas, ensuring even processing and reduced process duration.
Implementation Method 1
generates a pressure fall across the gas inlet openings through which gas flows in the gas inlet unit that exceeds the pressure fall of the gas in the bed of input material
Implementation Method 2
During pyrolysis, organic input material is heated in the absence of oxygen whereby the material, instead of being combusted, is converted to simpler components in the form of products in fluid and gaseous forms
Implementation Method 3
whereby the vaporized pyrolysis oil also leaving the reactor rapidly, and re-condensation of the oil is prevented
Data Source
AI summary
An arrangement for the recycling of carbon and hydrocarbon compounds from organic input material is provided. The arrangement includes: a reactor comprising a chamber that is limited by a jacket and upper and lower end-wall sections, gas inlet means for the supply of heated inert gas to the input material, whereby the gas inlet means is connected in a manner that transfers gas to a gas emission source, and gas outlets for leading the gas out of the chamber, where the gas outlet means comprises openings through which gas flows intended to supply the gas into the chamber, whereby the openings through which gas flows are arranged such that a fall in pressure is generated during the supply of gas that exceeds the fall in pressure of the gas during passage through the input material that has been introduced into the chamber. A corresponding method is also described.