JPS5551474A - Ash treatment - Google Patents
Ash treatmentInfo
- Publication number
- JPS5551474A JPS5551474A JP12580378A JP12580378A JPS5551474A JP S5551474 A JPS5551474 A JP S5551474A JP 12580378 A JP12580378 A JP 12580378A JP 12580378 A JP12580378 A JP 12580378A JP S5551474 A JPS5551474 A JP S5551474A
- Authority
- JP
- Japan
- Prior art keywords
- ash
- heated
- granules
- kiln
- sulfate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000008187 granular material Substances 0.000 abstract 5
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 4
- 239000012530 fluid Substances 0.000 abstract 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract 1
- 235000011941 Tilia x europaea Nutrition 0.000 abstract 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract 1
- 235000011116 calcium hydroxide Nutrition 0.000 abstract 1
- 239000000920 calcium hydroxide Substances 0.000 abstract 1
- 239000000428 dust Substances 0.000 abstract 1
- 239000000446 fuel Substances 0.000 abstract 1
- 229910052602 gypsum Inorganic materials 0.000 abstract 1
- 239000010440 gypsum Substances 0.000 abstract 1
- 239000004571 lime Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
Landscapes
- Treating Waste Gases (AREA)
- Processing Of Solid Wastes (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
PURPOSE: For simple and safe treatment of ash containing sulfate of NH3, such ash is added with heat medium of heat resistant granules and heated to thereby remove sulfate of NH3 from the ash.
CONSTITUTION: Ash 1 containing sulfate of NH3 collected by an electric dust collector and heat resistant granules heated to about 800°C or higher in the fluid layer furnace 4 are mixed in the kiln 2 and heated. The mixture in the kiln 2 is heated to about 350W400°C to allow sulfate of NH3 to be thermally decompsed into NH3 and SO3. The SO3 reacts with slaked lime contained in the ash or with lime added later to the ash and forms into gypsum, thus being solidified. NH3 is sucked through the outlet of the kiln 2 and recovered. NH3-free ash and granules are discharged from the kiln 2 and separated by the vibrating sieve 3 into the ash and granules. The granules are returned to the furnace 4 and heated in fluid condition by burnt gas of fuel 6 and air 7.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12580378A JPS5551474A (en) | 1978-10-13 | 1978-10-13 | Ash treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12580378A JPS5551474A (en) | 1978-10-13 | 1978-10-13 | Ash treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5551474A true JPS5551474A (en) | 1980-04-15 |
Family
ID=14919282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12580378A Pending JPS5551474A (en) | 1978-10-13 | 1978-10-13 | Ash treatment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5551474A (en) |
-
1978
- 1978-10-13 JP JP12580378A patent/JPS5551474A/en active Pending
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