Silicate Bacteria-Enhanced Pulp for Flue Gas Desulfurization
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Solution Overview
Problem
Current wet methods for sulfur dioxide removal from flue gas, such as the pulp method, face challenges in achieving high desulfurization efficiency due to low-grade ores and pulp heterogeneity, leading to inefficient resource utilization and environmental concerns.
Innovation Solution
A method involving the activation and domestication of silicate bacteria to enhance pulp desulfurization, where ore waste residue is treated and mixed with activated silicate bacteria, nutrients, and water to create a pulp that effectively decomposes silicate minerals, releasing valuable elements and enhancing sulfur dioxide removal through a contact reaction with flue gas, followed by resource utilization and recycling processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the pulp method is used to remove sulfur dioxide from flue gas, then sulfur dioxide removal is achieved, but desulfurization efficiency is low due to low-grade ore and pulp heterogeneity
Solution Approach 1:
The patent introduces silicate bacteria as a biological parameter to change the chemical and physical properties of the pulp. The bacteria modify the ore surface characteristics and enhance the leaching capability, transforming the pulp from a heterogeneous mixture with low reactivity to a biologically enhanced medium with improved desulfurization efficiency and more consistent performance.
Solution Approach 2:
The patent creates a composite material system combining silicate bacteria with ore waste residue and pulping agents. This composite structure integrates the biological activity of bacteria with the mineral composition of ore, forming a synergistic system that improves both desulfurization efficiency and pulp homogeneity through biological modification of the mineral matrix.
2Productivity
If silicate bacteria are introduced to enhance pulp desulfurization, then desulfurization efficiency is improved, but process complexity increases
Solution Approach 1:
The silicate bacteria system operates autonomously through biological metabolism, requiring no external energy input or complex control mechanisms. The bacteria self-regulate their activity through natural physiological processes, converting silicate minerals and releasing elements that enhance desulfurization, thereby improving efficiency without proportionally increasing process complexity.
Solution Approach 2:
The introduction of silicate bacteria modifies key parameters of the pulp system, including surface area, chemical composition, and reactivity. These parameter changes are achieved through biological action rather than complex mechanical or chemical processing, allowing efficiency improvement with minimal increase in process complexity.
3Adaptability or versatility
If ore waste residue is used in pulp, then resource utilization is improved, but pulp heterogeneity increases
Solution Approach 1:
Silicate bacteria act as biological modifiers that change the physical and chemical parameters of ore waste residue. Through bacterial metabolism and surface modification, the heterogeneous ore particles are uniformly distributed and chemically activated, transforming the pulp from a heterogeneous mixture to a more homogeneous and reliable desulfurization medium while maintaining resource utilization benefits.
Solution Approach 2:
Silicate bacteria serve as an intermediary between the heterogeneous ore waste residue and the desulfurization process. The bacteria mediate the interaction between ore particles and flue gas, creating a uniform biological interface that enhances desulfurization efficiency while masking the underlying heterogeneity of the ore waste composition.
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 significantly improves desulfurization efficiency, promotes resource recycling, and reduces waste generation, offering economic and environmental benefits by leveraging the catalytic and leaching capabilities of silicate bacteria to enhance sulfur dioxide removal and recover valuable metals.
Implementation Method 1
the silicate bacteria can effectively decompose silicate minerals in the ore waste residue to release elements such as phosphorus, potassium, manganese, and iron
Implementation Method 2
acids produced by the metabolism of silicate bacteria can promote the leaching of transition metal ions, such as Fe and Mn, in the ore waste residue, and have desirable catalytic oxidation ability
Implementation Method 3
contact with a certain concentration of sulfur dioxide in flue gas. The metal in pulp is leached under acidic conditions, and the sulfur dioxide is absorbed by the pulp
Data Source
AI summary
The present disclosure provides a method for wet removal of sulfur dioxide by silicate bacteria-enhanced pulp. The method includes: treatment of ore waste residue, activation and domestication of silicate bacteria, preparation of pulp, removal of sulfur dioxide, and resource utilization of a desulfurization product. The present disclosure combines flue gas desulfurization with resource utilization of the ore waste residue, and improves a desulfurization efficiency of the method by the pulp and a utilization rate of ore waste residue resources through silicate bacteria. The present disclosure has a high desulfurization efficiency, simple production process, and low cost, and realizes the recycling of resources such as the ore waste residue, the sulfur dioxide, and silicon. The present disclosure has obvious economic and environmental benefits and broad prospects for use.