Three-stage dioxin emission reduction method in process of firing municipal sludge to prepare ceramsite
A municipal sludge, three-stage technology, applied in separation methods, dispersed particle filtration, chemical instruments and methods, etc., can solve problems such as control and treatment of dioxin pollutants that are not mentioned, and achieve dioxin emission reduction methods. Simple and practical, suppress the generation of dioxin, and realize the effect of low-cost emission reduction control
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0025] The dehydrated municipal sewage treatment plant municipal sludge and other ingredients are added to the mixing tank according to the formula, in which ammonium sulfate is 0.03% of the total mass, stirred and mixed for 30 minutes to homogenize the materials, and the evenly mixed materials are sent to into the granulator, the particle size is controlled between 6mm, and the temperature gradient is 150°C-650°C, the pellets are sent into the rotary kiln, and the fuel oil is sprayed into the pellets by the fuel injection machine to fully burn the pellets. The high-temperature sintering temperature is 1050° C., and the time is 30 minutes. The temperature of the flue gas in the rotary kiln is controlled above 1000°C, and the residence time of the flue gas is more than 2s, so that the flue gas is fully stirred, and the flue gas outlet of the rotary kiln is O 2 Content 6-10%, CO3 , the concentration of dioxin is less than 0.1 ngTEQ / m 3 . The ceramsite is output through the out...
Embodiment 2
[0028] After dehydration, the sludge from the sewage treatment workshop of the printing and dyeing factory and other ingredients are added to the mixing tank according to the formula, and the auxiliary material ammonium chloride is 0.05% of the total mass. Stir and mix for 30 minutes to homogenize the materials. Send it into the granulator, the particle size is controlled between 6mm, the temperature gradient is 150°C-650°C, the pellets are sent into the rotary kiln, and the fuel oil is sprayed into the pellets through the fuel injection machine to fully burn the pellets. The high-temperature sintering temperature is 1050° C., and the time is 30 minutes. The temperature of the flue gas in the rotary kiln is controlled above 1000°C, and the residence time of the flue gas is more than 2s, so that the flue gas is fully stirred, and the flue gas outlet of the rotary kiln is O 2 Content 6-10%, COg / Nm 3 , the dioxin concentration is less than 0.1n g TEQ / m 3 . The ceramsite is o...
Embodiment 3
[0030]The dehydrated river sludge and other ingredients are added to the mixing tank according to the formula, and the auxiliary material ammonium bicarbonate is 0.06% of the total mass. Stir and mix for 30 minutes to homogenize the materials, and send the uniformly mixed materials into granulation In the machine, the particle size is controlled between 6mm and the temperature gradient is 150°C-650°C. The pellets are sent into the rotary kiln, and the fuel oil is sprayed into the pellets through the fuel injection machine to fully burn the pellets and carry out high temperature sintering. to 1050°C for 30 minutes. The temperature of the flue gas in the rotary kiln is controlled above 1000°C, and the residence time of the flue gas is more than 2s, so that the flue gas is fully stirred, and the flue gas outlet of the rotary kiln is O 2 Content 6-10%, COg / Nm 3 , the dioxin concentration is less than 0.1n g TEQ / m 3 . The ceramsite is output through the outlet pipeline, and is...
PUM
Property | Measurement | Unit |
---|---|---|
particle size | aaaaa | aaaaa |
particle diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com