Multi-Stage Vapor Scrubbing for Rendering Odor and Carcinogen Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for treating vapor-dominated discharge streams from rendering processes, which contain odorous, noxious, hazardous, toxic, mutagenic, and carcinogenic compounds, are inadequate as they fail to effectively remove these substances from commingled gas, liquid, and solid phases, leading to air pollution and equipment damage.
Innovation Solution
A multi-step process involving ambient temperature condensation, advanced condensation, particulate removal, and pH-adjusted wet scrubbing using Fenton chemistry and other oxidizing agents to progressively deplete and neutralize the harmful compounds in the vapor-dominated waste streams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If thermal incineration is used to treat vapor-dominated discharge streams, then harmful compounds are destroyed, but equipment damage and operational costs increase due to corrosive and erosive waste streams
Solution Approach 1:
The treatment process is divided into multiple sequential stages: condensation stage, particulate removal stage, and wet scrubbing stage. Each stage targets specific components of the waste stream, progressively treating the gas before it reaches the final discharge point, thereby protecting downstream equipment from corrosive and erosive effects while effectively removing harmful compounds
Solution Approach 2:
The system performs preliminary condensation and particulate removal before the gas stream enters the wet scrubbing system. This preliminary treatment removes condensable vapors and particulates that would otherwise cause equipment damage, extending equipment lifespan while maintaining effective harmful compound removal
2Quantity of substance
If multi-phase vapor waste streams are discharged directly, then operational costs are reduced, but air pollution and equipment damage occur
Solution Approach 1:
The system extracts and removes specific harmful components from the multi-phase vapor waste stream through targeted treatment stages. Condensation removes condensable vapors, particulate removal captures solid particles, and wet scrubbing absorbs gaseous pollutants, thereby reducing air pollution while managing operational costs through efficient resource utilization
3Device complexity
If conventional treatment methods are used, then device complexity is minimized, but manufacturing precision and treatment effectiveness are insufficient
Solution Approach 1:
The treatment system is segmented into distinct functional units: condensation equipment, particulate removal devices, and wet scrubbing systems. Each unit is optimized for its specific function, allowing for precise treatment of different waste stream components while maintaining manageable overall system complexity through modular design
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 the concentration, mass, and volume of odorous, hazardous, toxic, mutagenic, and carcinogenic compounds, minimizing air pollution and extending equipment lifespan while reducing operational costs.
Implementation Method 1
condensation of chemical vapors, solid particulates, smoke particulates, aerosols, and water vapor
Implementation Method 2
dry electrostatic precipitation oxidation
Implementation Method 3
wet scrubbing techniques... Fenton chemistry
Data Source
AI summary
A method for removing noxious, hazardous, toxic, mutagenic, and/or carcinogenic compounds and/or precursor compounds from a comingled gas, liquid and/or solid stream is described. In one embodiment, the method includes optionally passing the stream through an ambient temperature condenser followed by passing the stream through a spray venturi scrubber, a chilled condenser, a gas/solid separator, and a series of wet scrubbers to remove at least a portion of the compounds.