Cycle Heating Coal Decomposition Kiln with Radiant Tubes
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Solution Overview
Problem
Conventional coal decomposition methods face challenges such as high material costs, impurity introduction, safety concerns due to complex and leak-prone heating systems, and inefficient heat transfer, leading to suboptimal gas production and difficulty in monitoring combustion processes.
Innovation Solution
A cycle heating gas method and equipment where coal is heated by high-temperature coal decomposed gas or inert gas in an airtight space, allowing for continuous heating without external sources, ensuring purity and safety through closed-loop gas circulation, and utilizing inert gas as a heat transfer medium to enhance efficiency and reduce external fuel needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If flame gas heating pipes are used to heat coal, then heating efficiency is improved, but system complexity increases and leakage risks arise
Solution Approach 1:
The patent extracts the heating function from complex flame gas heating pipes and implements it through simple radiant heating tubes. The heating function is separated from the coal decomposition function, allowing independent optimization of each component and eliminating the leakage risks associated with integrated flame gas systems.
Solution Approach 2:
The patent replaces expensive, complex flame gas heating pipes with simpler, more affordable radiant heating tubes that have shorter service lives but lower initial costs and no leakage risks. This trade-off is acceptable given the elimination of safety hazards and the ability to quickly replace failed components.
2Use of energy by moving object
If combustion chamber is set inside kiln body, then heating is improved, but inspection and maintenance become difficult
Solution Approach 1:
The patent segments the heating system into separate radiant heating tubes positioned outside the kiln body, rather than integrating the combustion chamber inside. This segmentation allows the heating function to be maintained while providing easy access for inspection and maintenance of both the heating tubes and kiln components.
Solution Approach 2:
The patent introduces radiant heating tubes as intermediary elements that transfer heat from the combustion chamber to the coal without requiring direct contact inside the kiln body. This intermediary approach maintains heating effectiveness while enabling easy maintenance of the combustion chamber and heating components separately.
3Temperature
If external heat sources are used, then heating is achieved, but energy consumption increases
Solution Approach 1:
The patent implements a self-service heating system where the coal decomposition process itself generates the heat needed for heating. The endothermic decomposition reactions produce hot gases that are circulated back through the radiant heating tubes to heat incoming coal, eliminating the need for external heat sources and significantly reducing energy consumption.
Solution Approach 2:
The patent recovers and reuses the hot gases produced during coal decomposition that would otherwise be discarded. These hot decomposition gases are captured and directed through the radiant heating tubes to provide heating, converting what would be waste heat into a useful resource and reducing overall energy consumption.
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 high-value coal and gas production with improved safety, reduced energy consumption, and increased resource utilization, enabling efficient and cost-effective coal decomposition while eliminating the need for external heat sources and minimizing impurities.
Implementation Method 1
making the coal sufficiently contact with decomposed gas or inert gas in high temperature in an airtight space to absorb heat and be heated up
Implementation Method 2
coal sufficiently contact with decomposed gas or inert gas in high temperature in an airtight space to absorb heat and be heated up
Implementation Method 3
Heating the coal up to a decomposing temperature so as to decompose the coal to high heating value coal and coal decomposed gas
Implementation Method 4
making the detached inert gas or the other part of the coal decomposed gas into the airtight space react with the undecomposed coal after being heated
Data Source
AI summary
The invention discloses a coal decomposition method and equipment in cycle heating gas style. The coal decomposition equipment can avoid introducing impurity, ensure a pure decomposed gas and keep continuous heating without extrinsic heat source, which includes an airtight kiln body with coal inlet and coal outlet; a facility for impelling and decomposing coal set in the kiln body; a coal decomposed gas collecting pipe set in one end of the airtight kiln body, and a high temperature gas input pipe set in the other end of the airtight kiln body; wherein the coal decomposed gas collecting pipe is connected with a post-processing facility and communicates with the high temperature gas input pipe through a circle pipe, and the circle pipe and/or the high temperature gas input pipe comprises a heating device.