Bituminous Dryer Combustion System for Emission Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for producing bituminous conglomerates are ineffective in reducing polluting emissions, particularly fugitive emissions containing organic compounds and polycyclic aromatic hydrocarbons, during production, storage, and transportation, leading to clogging issues in filtering systems and periodic maintenance needs.
Innovation Solution
A dryer system with a burner that generates temperatures above 400°C to combust polluting compounds, combined with a suction system that increases the residence time of these compounds within the dryer, ensuring effective thermal oxidation and minimizing environmental release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If filtering means are used to capture polluting compounds, then polluting compound emissions are reduced, but the filtering means are subject to frequent clogs requiring periodic maintenance
Solution Approach 1:
The patent applies combustion to convert harmful polluting compounds into less harmful combustion products. The burner transforms organic compounds and polycyclic aromatic hydrocarbons into CO2, H2O, and other stable substances, eliminating the need for filtering means that would clog with oily components.
Solution Approach 2:
The patent replaces the mechanical filtering system with a thermal combustion system. Instead of using filters that physically trap and clog with pollutants, the system uses a burner to thermally oxidize pollutants, substituting a mechanical separation process with a chemical transformation process.
2Object-affected harmful factors
If filtering means are installed to reduce polluting emissions, then environmental release is minimized, but functionality is reduced due to frequent clogs
Solution Approach 1:
The combustion process converts harmful polluting compounds into beneficial or neutral combustion products. The burner transforms organic compounds and polycyclic aromatic hydrocarbons into CO2, H2O, and other stable substances, maintaining reliable emission control without the clogging issues of filters.
Solution Approach 2:
The patent changes the physical and chemical parameters of the polluting compounds by exposing them to high temperatures (typically above 600°C) and oxygen-rich environments. This thermal oxidation transforms the chemical composition and state of the pollutants, converting them from harmful organic compounds to stable combustion products.
3Productivity
If conventional dryer operation is used, then production efficiency is maintained, but polluting compounds are released into the environment during production and loading phases
Solution Approach 1:
The patent merges the drying function with the pollution control function by integrating a burner into the dryer system. The same thermal field used for drying aggregates simultaneously combusts polluting compounds, eliminating the need for separate emission treatment systems and maintaining production efficiency while reducing emissions.
Solution Approach 2:
The dryer system is designed to perform multiple functions: drying aggregates, heating bitumen, and combusting polluting compounds. This multi-functionality allows the system to maintain high productivity while simultaneously controlling emissions during production and loading phases.
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
Significantly reduces polluting compound emissions during production and loading phases, prevents clogging in filtering systems, and eliminates the need for frequent maintenance by ensuring complete combustion of pollutants.
Implementation Method 1
A dryer system with a burner that generates temperatures above 400°C to combust polluting compounds
Implementation Method 2
ensuring effective thermal oxidation and minimizing environmental release
Implementation Method 3
a suction system that increases the residence time of these compounds within the dryer
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Dryer (4) for a plant (21) for the production and distribution of bituminous conglomerates and operating method of said dryer, wherein the dryer comprises an inlet mouth (37) of inert materials (53), at least one burner (5) generating drying heat for the materials (53), at least one discharge head (42) for the extraction of the materials (53) from the dryer (4), a suction system (49) of air from the dryer (4), and wherein the dryer further comprises a damping system (58) of polluting compounds.