Sludge Separator Using Liquid Lead Mantle for Uniform Heating
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sludge separation processes face challenges with uneven temperature distribution and high energy consumption, leading to undesired cracking and tar formation in petroleum liquids, and lack effective control over the sludge-drying process.
Innovation Solution
A sludge separator design featuring a cylindrical inner tank with a conveyor auger having radially extending arms with conveyor blades, surrounded by a liquid Lead mantle for uniform heat distribution, reducing temperature gradients and avoiding excess heating, along with a method of feeding sludge through a rotating conveyor auger that smears the sludge evenly along the inner tank surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If friction heat is used to boil off water and oil gases, then sludge separation is achieved, but temperature control is uneven and energy consumption is high
Solution Approach 1:
The heating system is segmented into multiple heating elements distributed around the tank circumference, with independent control of each heating zone. This allows different portions of the sludge to be heated at different rates, improving temperature uniformity while maintaining separation efficiency.
Solution Approach 2:
The system dynamically adjusts heating power in different zones based on real-time temperature feedback. The control system modifies heating element output to maintain optimal temperature distribution, preventing both overheating and insufficient heating in different areas of the sludge mass.
2Productivity
If high friction heat is applied, then water and oil gases are boiled off, but cracking and tar formation occur in petroleum liquids
Solution Approach 1:
The system changes the temperature parameter profile by using distributed heating to maintain lower, more uniform temperatures throughout the sludge mass compared to concentrated friction heat. This parameter change prevents thermal degradation reactions that cause cracking and tar formation while still achieving effective decontamination.
Solution Approach 2:
The system introduces a controlled heating environment as an intermediary between the raw sludge and the desired decontamination outcome. By mediating the heating process through distributed heating elements and temperature control, the system achieves separation without the harmful thermal effects of uncontrolled friction heat.
3Use of energy by stationary object
If conventional heating methods are used, then energy consumption is high, but temperature control is poor
Solution Approach 1:
The system implements feedback control by monitoring temperature at multiple locations within the sludge mass and adjusting heating element output accordingly. This closed-loop control optimizes energy usage by activating heating only where and when needed, reducing overall energy consumption while maintaining precise temperature control.
Solution Approach 2:
Different zones of the heating system have different heating capacities and control characteristics tailored to local sludge conditions. This local quality approach allows optimized energy distribution to different areas, improving both energy efficiency and temperature control precision simultaneously.
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 temperature gradients and prevents excess heating, improving the control of the sludge-drying process by ensuring uniform heating and reducing the risk of cracking and combustion, achieving a decontaminated dry mass with less than 0.5% oil pollution.
Implementation Method 1
said cavity (35), in operative state of said sludge separator, is filled with liquid Lead (Pb) so as for distributing heat over said first, inner tank's (31i) surface (31i)
Implementation Method 2
distributing heat over said first, inner tank's (31i) surface (31i) such that a temperature in the first tank (31) approaches a uniform distribution over the inner tank's surface (31i)
Implementation Method 3
a first evaporated gas outlet (7) for removing gas evaporated from said oil contaminated masses
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention is a sludge separator (0) for oil contaminated sludge masses, the sludge separator (0) comprising: - a first cylindrical, inner tank (31) comprising: - a sludge inlet (1), - a first evaporated gas outlet (7); - a solid matter outlet (11), - a conveyor auger (5) axially aligned inside said first, inner tank (31) for transporting oil contaminated sludge masses from said sludge inlet (1) towards said solid matter outlet (11), - a second cylindrical, outer tank (33) at least partially enclosing said first, inner tank (31) such that a cavity (35) is formed around said first, inner tank (31), - a heating element (13) arranged at least at a lower part of said second, outer tank (33), - wherein said cavity (35), in an operative state of said sludge separator, is filled with smelted Lead (Pb) so as for distributing heat over said first, inner tank's (31) surface (311).