CA2079508A1 - Method and apparatus for rendering waste substances harmless - Google Patents
Method and apparatus for rendering waste substances harmlessInfo
- Publication number
- CA2079508A1 CA2079508A1 CA 2079508 CA2079508A CA2079508A1 CA 2079508 A1 CA2079508 A1 CA 2079508A1 CA 2079508 CA2079508 CA 2079508 CA 2079508 A CA2079508 A CA 2079508A CA 2079508 A1 CA2079508 A1 CA 2079508A1
- Authority
- CA
- Canada
- Prior art keywords
- soil
- lime
- hydrocarbon
- reaction vessel
- decontaminated
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title abstract 3
- 238000009877 rendering Methods 0.000 title 1
- 239000000126 substance Substances 0.000 title 1
- 239000002699 waste material Substances 0.000 title 1
- 239000002689 soil Substances 0.000 abstract 8
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract 4
- 235000011941 Tilia x europaea Nutrition 0.000 abstract 4
- 238000006243 chemical reaction Methods 0.000 abstract 4
- 239000004571 lime Substances 0.000 abstract 4
- 229930195733 hydrocarbon Natural products 0.000 abstract 3
- 150000002430 hydrocarbons Chemical class 0.000 abstract 3
- 239000000047 product Substances 0.000 abstract 3
- 235000014113 dietary fatty acids Nutrition 0.000 abstract 2
- 229930195729 fatty acid Natural products 0.000 abstract 2
- 239000000194 fatty acid Substances 0.000 abstract 2
- 150000004665 fatty acids Chemical class 0.000 abstract 2
- 238000006703 hydration reaction Methods 0.000 abstract 2
- 238000006460 hydrolysis reaction Methods 0.000 abstract 2
- 230000003647 oxidation Effects 0.000 abstract 2
- 238000007254 oxidation reaction Methods 0.000 abstract 2
- 239000004094 surface-active agent Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 239000004215 Carbon black (E152) Substances 0.000 abstract 1
- 239000012190 activator Substances 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 230000007073 chemical hydrolysis Effects 0.000 abstract 1
- 230000001143 conditioned effect Effects 0.000 abstract 1
- 230000003750 conditioning effect Effects 0.000 abstract 1
- 239000000356 contaminant Substances 0.000 abstract 1
- 239000007857 degradation product Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 230000036571 hydration Effects 0.000 abstract 1
- 230000007062 hydrolysis Effects 0.000 abstract 1
- 230000002209 hydrophobic effect Effects 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
A method and apparatus are provided for the treatment of hydrocarbon-contaminated soil by chemical hydrolysis and/or oxidation of the hydrocarbons in the hydrocarbon-contaminated soil. The method includes conditioning lime with a particularly-specified fatty-acid activator. The conditioned lime is blended with physically-preconditioned, moist, hydrocarbon-contaminated soil, the degree of blending being at least near microscopic level. A charge of the blended lime/soil is conveyed to an enclosed reaction vessel, where hydration of the lime is carried out. The heat of the hydration reaction is retained within the vessel, so that hydrolysis of the fatty acid conditioner and/or hydrocarbon contaminants in the soil is effected. Air or oxygen-enriched air is substantially-simultaneously introduced into the reaction vessel together with steam and/or water as required by the chemical reactions, thereby to effect a flameless, intermediate-temperature oxidation of the hydrocarbons and their hydrolysed degradation products. Decontaminated soil product is discharged from the reaction vessel by passing the decontaminated soil product, in dry, dusty, hydrophobic form, through a treating zone where it is sprayed with a surfactant. The surfactant-treated solid is passed to a blender where it is mixed with sufficient water to provide a substantially dust-free decontaminated soil product.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/866,472 US5414206A (en) | 1991-12-09 | 1992-04-10 | Method and process for rendering waste substances harmless |
| US07/866,472 | 1992-04-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2079508A1 true CA2079508A1 (en) | 1993-10-11 |
| CA2079508C CA2079508C (en) | 1998-05-05 |
Family
ID=25347686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2079508 Expired - Fee Related CA2079508C (en) | 1992-04-10 | 1992-09-30 | Method and apparatus for rendering waste substances harmless |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA2079508C (en) |
| PL (1) | PL169282B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825032A (en) * | 2017-03-22 | 2017-06-13 | 中国石油大学(华东) | Chromium-polluted soil humic acid is segmented clean and effective prosthetic device |
-
1992
- 1992-09-30 CA CA 2079508 patent/CA2079508C/en not_active Expired - Fee Related
- 1992-12-08 PL PL30968792A patent/PL169282B1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825032A (en) * | 2017-03-22 | 2017-06-13 | 中国石油大学(华东) | Chromium-polluted soil humic acid is segmented clean and effective prosthetic device |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2079508C (en) | 1998-05-05 |
| PL169282B1 (en) | 1996-06-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |