SK284832B6 - Method of treatment of filter cake from filtration of polymer polyols - Google Patents
Method of treatment of filter cake from filtration of polymer polyols Download PDFInfo
- Publication number
- SK284832B6 SK284832B6 SK1800-2001A SK18002001A SK284832B6 SK 284832 B6 SK284832 B6 SK 284832B6 SK 18002001 A SK18002001 A SK 18002001A SK 284832 B6 SK284832 B6 SK 284832B6
- Authority
- SK
- Slovakia
- Prior art keywords
- filter cake
- polyether polyol
- treating
- production
- filter
- Prior art date
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
- Y02P20/143—Feedstock the feedstock being recycled material, e.g. plastics
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Polyethers (AREA)
Abstract
Description
Vynález sa týka spôsobu úpravy filtračného koláča z filtrácie polymémych polyolov. Vynález patrí do oblasti zhodnocovania a zneškodňovania nebezpečných odpadov.The invention relates to a method for treating a filter cake from the filtration of polymeric polyols. The invention belongs to the field of recovery and disposal of hazardous waste.
Doterajší stav technikyBACKGROUND OF THE INVENTION
V súčasnosti sa pri výrobe polymémych polyolov a ich konečnom čistení používa ako náhrada za extrakciu filtrácia, pričom dochádza k tvorbe filtračného koláča. Problém však nastáva so zneškodňovaním tohto filtračného koláča, a to hlavne z dôvodu vysokého obsahu polymémych polyolov.At present, filtration and the production of a filter cake are used as a substitute for extraction in the production of polymer polyols and their final purification. However, the problem arises with the disposal of this filter cake, mainly because of the high content of polymer polyols.
Takto vzniknutý odpad s obsahom 30 až 40 % hmotn. polymémych polyolov je možné zneškodniť spaľovaním alebo úpravou. Spaľovanie odpadu s obsahom 60 až 70 % hmotn. anorganických látok je ekonomicky nákladné. Vzhľadom na skutočnosť, že ide o odpad s vysokým obsahom fosforu, dochádzalo by k vypadávaniu výmurovky pece spaľovne.The resulting waste with a content of 30 to 40 wt. Polymeric polyols can be destroyed by incineration or treatment. Incineration of waste containing 60 to 70 wt. of inorganic substances is economically expensive. Given that this is a waste with a high phosphorus content, the lining of the incinerator furnace would fall out.
Keďže v súčasnosti nie je doriešený ekonomicky výhodný a ekologicky vhodný spôsob úpravy odpadov s obsahom polymémych polyolov, bolo nutné tento problém riešiť, čo napokon vyústilo do spôsobu úpravy filtračného koláča podľa tohto vynálezuSince the economically advantageous and ecologically acceptable method of treating wastes containing polymeric polyols is currently not solved, this problem has to be solved, which ultimately resulted in the method of treating the filter cake of the present invention.
Podstata vynálezuSUMMARY OF THE INVENTION
Uvedené nedostatky do značnej miery odstraňuje spôsob úpravy filtračného koláča s obsahom 40 až 60 % hmotn. alkalických solí dvojfosforečnanu (P2O7)4', 30 až 40 % hmotn. polyéterpolyolu, 3 až 10 % hmotn. kremeliny (Mg Si O3), 5 až 10 % hmotn. expandovaného oxidu kremičitého (perlitu) tak, aby obsah polymémych polyolov bol minimálny. Podstata vynálezu spočíva v tom, že k filtračnému koláču sa pridá voda v hmotnostnom pomere 0,5 : 1 až 4 : 1 a za stáleho miešania sa zmes zohrieva na teplotu 80 až 85 °C. Taktiež je možné v prvom kroku úpravy nadávkovať odpad - filtračný koláč do vyhriatej vody na 50 až 60 °C. Je možné po 20 až 40 minútach celý obsah prečerpať do deliacej kolóny a nechať rozvrstviť. Po vychladení na 30 až 35 °C sa vodná vrstva oddelí od vrstvy polyéterpolyolu. Rozpustná soľ alkalického dvojfosforečnanu, filtračná kremelina a expandovaný oxid kremičitý prejde do vodnej fázy a na povrchu vynikne vrstva polyéterpolyolu. Po oddelení fáz sa tieto samostatne spracuj ú.The aforementioned drawbacks are largely eliminated by a process for treating a filter cake containing 40 to 60 wt. alkali metal salts of pyrophosphate (P 2 O 7) 4 ', 30 to 40% by weight. % polyether polyol, 3 to 10 wt. % diatomaceous earth (Mg SiO 3 ), 5 to 10 wt. expanded silica (perlite) so that the content of polymer polyols is minimal. SUMMARY OF THE INVENTION The invention is based on the addition of water to the filter cake in a weight ratio of 0.5: 1 to 4: 1 and with stirring, the mixture is heated to a temperature of 80 to 85 ° C. It is also possible in the first treatment step to dispense the waste - filter cake into heated water at 50 to 60 ° C. After 20 to 40 minutes, the entire contents can be pumped into a separating column and stratified. After cooling to 30-35 ° C, the aqueous layer is separated from the polyether polyol layer. The soluble alkaline diphosphate salt, filter diatomaceous earth and expanded silica are transferred to the aqueous phase and a layer of polyether polyol will excel on the surface. After phase separation, these are separately processed.
Je výhodné, že po úprave filtračného koláča spôsobom podľa vynálezu sa môže ešte tento filtračný koláč využiť, kde jednoduchými technologickými operáciami sa docieli znovupoužitic 30 až 40 % hmotn. polyéterpolyolu jako suroviny, alebo je ho možné využiť na energetické účely s výhrevnosťou 29 000 kJ.kg'1, čo je hodnota výhrevnosti čierneho uhlia.It is advantageous that after the treatment of the filter cake by the method according to the invention, the filter cake can still be used, where by simple technological operations 30 to 40 wt. % of polyether polyol as feedstock, or can be used for energy purposes with a calorific value of 29,000 kJ.kg -1 , which is the calorific value of hard coal.
Alkalická soľ dvojfosforečnanu 55 % hmotn.% Alkaline dibasic salt 55 wt.
Polyéterpolyol 35 % hmotn.Polyether polyol 35 wt.
Filtračná kremelina 3 % hmotn.% Kieselguhr 3% wt.
Expandovaný oxid kremičitý 7 % hmotn.Expanded silica 7 wt.
Do vyhriatej vody na 50 až 60 °C sa v prvom kroku úpravy nadávkoval odpad - filtračný koláč v hmotnostnom pomere 1:1. Zmes sa za stáleho miešania vyhriala na 80 až 85 °C. Rozpustná soľ alkalického dvojfosforečnanu, filtračná kremelina a expandovaný oxid kremičitý prejde do vodnej fázy a na povrchu vznikne vrstva polyéterpolyolu. Po 30 minútach sa celý obsah prečerpá do deliacej kolóny a nechá sa rozvrstviť. Po vychladení na 30 až 35 °C sa vodná vrstva oddelí od vrstvy polyéterpolyolu.In the first treatment step, the waste-filter cake was added to the heated water at 50-60 ° C in a 1: 1 weight ratio. The mixture was heated to 80-85 ° C with stirring. The soluble alkaline diphosphate salt, filter diatomaceous earth and expanded silica are transferred to the aqueous phase and a layer of polyether polyol is formed on the surface. After 30 minutes, the entire contents are pumped to a separating column and allowed to stratify. After cooling to 30-35 ° C, the aqueous layer is separated from the polyether polyol layer.
Oddelený polyéterpolyol sa vyznačoval nasledovným zložením:Separated polyether polyol was characterized by the following composition:
Obsah vody podľa Fischera 0,0165 % hmotn.Fischer water content 0.0165 wt.
Spalne teplo a výhrevnosť 28 935 kj. kg'1 Combustion heat and net calorific value 28 935 kj. kg ' 1
Bod vzplanutia podľa Clevelanda 232 °CCleveland flash point 232 ° C
Priemyselná využiteľnosťIndustrial usability
Spôsob úpravy filtračného koláča znehodnoteného dvojfosforečnanom a polyéterpolyolom podľa predloženého vynálezu nachádza uplatnenie v technologickom procese výroby polyéterpolyolov, najmä pri výrobe Slovapropu.The process of treating a filter cake devalued with diphosphate and polyether polyol according to the present invention finds application in the technological process for the production of polyether polyols, in particular in the production of Slovaprop.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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SK1800-2001A SK284832B6 (en) | 2001-12-06 | 2001-12-06 | Method of treatment of filter cake from filtration of polymer polyols |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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SK1800-2001A SK284832B6 (en) | 2001-12-06 | 2001-12-06 | Method of treatment of filter cake from filtration of polymer polyols |
Publications (2)
Publication Number | Publication Date |
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SK18002001A3 SK18002001A3 (en) | 2005-03-04 |
SK284832B6 true SK284832B6 (en) | 2005-12-01 |
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SK1800-2001A SK284832B6 (en) | 2001-12-06 | 2001-12-06 | Method of treatment of filter cake from filtration of polymer polyols |
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Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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EP3574036B1 (en) | 2017-01-25 | 2024-07-17 | Huntsman International LLC | Method for the production of polyether polyols |
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