CS214445B1 - Method of safe storing of solid toxical refuse with contents of cyamids - Google Patents
Method of safe storing of solid toxical refuse with contents of cyamids Download PDFInfo
- Publication number
- CS214445B1 CS214445B1 CS83281A CS83281A CS214445B1 CS 214445 B1 CS214445 B1 CS 214445B1 CS 83281 A CS83281 A CS 83281A CS 83281 A CS83281 A CS 83281A CS 214445 B1 CS214445 B1 CS 214445B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- solid
- cyamids
- toxical
- refuse
- contents
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 4
- 239000007787 solid Substances 0.000 title claims description 3
- 231100000331 toxic Toxicity 0.000 title claims description 3
- 230000002588 toxic effect Effects 0.000 title claims description 3
- 239000002699 waste material Substances 0.000 claims description 11
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 claims description 7
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 5
- 239000000920 calcium hydroxide Substances 0.000 claims description 5
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 5
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 7
- 239000011575 calcium Substances 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- CWVZGJORVTZXFW-UHFFFAOYSA-N [benzyl(dimethyl)silyl]methyl carbamate Chemical compound NC(=O)OC[Si](C)(C)CC1=CC=CC=C1 CWVZGJORVTZXFW-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- NNFCIKHAZHQZJG-UHFFFAOYSA-N potassium cyanide Chemical compound [K+].N#[C-] NNFCIKHAZHQZJG-UHFFFAOYSA-N 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Description
Vynález se týká bezpečného skladování pevných toxických odpadů s obsahem kyanidů.The invention relates to the safe storage of solid toxic cyanide-containing wastes.
Dosud se odpadní kyanidové odpady skladují v plechových sudech, které v žádném případě nejsou vzduchotěsně uzavřeny. Vlivem kysličníku uhličitého ze vzduchu dochází, vzhledem к tomu, že kyselina uhličitá je silnější než kyselina kyanovodíková, к vývinu kyanovodíku podle reakce*So far, waste cyanide waste has been stored in metal drums, which are in no way sealed. Due to the effect of carbon dioxide from the air, since carbonic acid is stronger than hydrocyanic acid, hydrogen cyanide evolves according to the reaction *
2NaCN + CO2 + HgO . 2HCN + Na2CO3 2NaCN + CO 2 + HgO. 2HCN + Na 2 CO 3
V důsledku toho je sklad nebezpečně zamořen prudce jedovatým plynem kyanovodíkem a smrtelně ohrožuje pracovníky ve skladu, nebo v případě intenzivního odvětrávání okolí skladu.As a result, the warehouse is dangerously contaminated by violently poisonous hydrogen cyanide gas and fatally endangers the workers in the warehouse, or in case of intensive ventilation around the warehouse.
Toto nebezpečí odstraňuje způsob skladování podle vynálezu, který spočívá v tom, že se vždy po nasypání kyanidových odpadů do sudu posype povrch odpadů hydroxidem vápenatým. Tím se zamezí styku kysličníku uhličitého z atmosféry s kyanidem, poněvadž hydroxid vápenatý s kysličníkem uhličitým přednostně reaguje za vzniku uhličitanu vápenatého podle reakceThis danger is eliminated by the storage method according to the invention, which consists in always pouring the surface of the waste with calcium hydroxide after the cyanide waste has been poured into the drum. This prevents contact of the carbon dioxide from the atmosphere with the cyanide, since the calcium hydroxide and the carbon dioxide react preferentially to form calcium carbonate according to the reaction.
Ca(OH)2 + C02 - CaCOj + HgOCa (OH) 2 + CO 2 - CaCO 3 + HgO
V případě, že by kyanovodík vznikal uvnitř skladovaných odpadů, musí projít vrstvou hydroxidu vápenatého, se kterým bude reagovat za vzniku kyanidu vápenatého podle reakceIn the event that hydrogen cyanide is produced inside the stored waste, it must pass through a layer of calcium hydroxide with which it will react to form calcium cyanide according to the reaction
2HCN + Ca(OH)2 « Ca(CN)2 + 2H202HCN + Ca (OH) 2 · Ca (CN) 2 + 2H 2 O
Výhodou způsobu skladování podle vynálezu je, že bezpečně odstraní potenciální nebezpečí, které představuje vyvíjející se kyanovodík z uskladněných kyanidových odpadů. PříkladAn advantage of the storage method of the invention is that it safely removes the potential danger posed by developing hydrogen cyanide from stored cyanide waste. Example
V závodě se skladuje v manipulačním skladě průběžně 10 tun odpadů s obsahem kyanidu draselného v plechových sudech.At the plant, 10 tonnes of potassium cyanide-containing waste are stored in a handling warehouse continuously in sheet metal drums.
Při každém naplnění sudu kyanidovými odpady se překryje horní vrstva odpadů slabou vrstvou hydroxidu vápenatého, čímž se zamezí úniku kyanovodíku do prostoru skladu.Each time the drum is filled with cyanide waste, the top layer of waste is covered with a thin layer of calcium hydroxide to prevent leakage of hydrogen cyanide into the storage area.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS83281A CS214445B1 (en) | 1981-02-04 | 1981-02-04 | Method of safe storing of solid toxical refuse with contents of cyamids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS83281A CS214445B1 (en) | 1981-02-04 | 1981-02-04 | Method of safe storing of solid toxical refuse with contents of cyamids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS214445B1 true CS214445B1 (en) | 1982-04-09 |
Family
ID=5341221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS83281A CS214445B1 (en) | 1981-02-04 | 1981-02-04 | Method of safe storing of solid toxical refuse with contents of cyamids |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS214445B1 (en) |
-
1981
- 1981-02-04 CS CS83281A patent/CS214445B1/en unknown
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