Polymeric Hydrogen Donor for Non-Coking Coal Coking
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Solution Overview
Problem
The challenge is to enhance the coking potential of non-coking coal without deteriorating the properties of coke in blast furnaces, as non-coking coal lacks hydrogen generation in the required temperature range, which is crucial for coking processes.
Innovation Solution
A polymeric compound, specifically compounds of Formula I, is introduced that generates hydrogen during co-pyrolysis in the 350-550°C temperature range, improving the coking potential of non-coking coal when blended with coking coal, using a composition comprising the compound, hydrogen donor solvents, carbonaceous materials, and tackifiers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If non-coking coal is used in coal blends, then the cost of coal import is reduced and availability is improved, but the coking potential deteriorates due to lack of hydrogen generation in the required temperature range
Solution Approach 1:
A polymeric compound acts as an intermediary substance that bridges the gap between non-coking coal and coking requirements. The polymer decomposes at 350-550°C to release hydrogen, which then becomes available to non-coking coal during co-pyrolysis, enabling it to develop coking properties without changing the coal itself
Solution Approach 2:
The invention changes the thermal decomposition parameters of the coal blend by introducing a polymer that releases hydrogen at a specific temperature range (350-550°C). This temperature-controlled hydrogen release transforms the thermal behavior of non-coking coal, enabling it to meet coking requirements
2Use of energy by moving object
If hydrogen is released at lower temperatures in non-coking coal, then hydrogen generation occurs more easily, but the hydrogen is not available in the required temperature range (350-550°C) for proper coking
Solution Approach 1:
The polymeric compound serves as a mediator that transfers hydrogen at the correct temperature. Instead of relying on non-coking coal's intrinsic low-temperature hydrogen release, the polymer decomposes at 350-550°C to provide hydrogen at the precise temperature range needed for coking
Solution Approach 2:
The polymer is pre-selected and added to the coal blend before pyrolysis, with its decomposition temperature engineered to match the coking requirement. This preliminary arrangement ensures hydrogen becomes available exactly when and where it is needed during the heating process
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 solution effectively stabilizes the metaplast in the fluidic regime, enhancing the coking properties of coal blends and allowing non-coking coal to be used without compromising coke quality, as evident from improved Crucible Swelling Number (CSN) and Coke Reactivity Indices (CRI) values.
Implementation Method 1
A polymeric compound, specifically compounds of Formula I, is introduced that generates hydrogen during co-pyrolysis in the 350-550°C temperature range
Implementation Method 2
said organic compound(s) is capable of releasing/liberating hydrogen in the plastic region of coal
Data Source
AI summary
The present relates to organic compound(s) [i e compound of formula I or compound of formula IA] and/or a composition comprising said organic compound(s) useful for utilization of non-coking coal in a blend comprising coking coal without deterioration of properties of coking coal, wherein said organic compound(s) is capable of releasing hydrogen in the plastic region of coal. The present disclosure provides a simple, economical, non-toxic and an efficient method for the preparation of said organic polymer and a method for utilization of non-coking coal in blend comprising coking coal without deterioration of properties of coke.