RO83091B1 - PROCESS FOR RECOVERY OF NaOH FROM THE SPENT LYES DISCHARGED IN THE TEXTILE INDUSTRY AND INSTALLATION FOR CARRYING OUT THE PROCESS - Google Patents
PROCESS FOR RECOVERY OF NaOH FROM THE SPENT LYES DISCHARGED IN THE TEXTILE INDUSTRY AND INSTALLATION FOR CARRYING OUT THE PROCESSInfo
- Publication number
- RO83091B1 RO83091B1 RO104967A RO10496781A RO83091B1 RO 83091 B1 RO83091 B1 RO 83091B1 RO 104967 A RO104967 A RO 104967A RO 10496781 A RO10496781 A RO 10496781A RO 83091 B1 RO83091 B1 RO 83091B1
- Authority
- RO
- Romania
- Prior art keywords
- naoh
- recovery
- discharged
- installation
- carrying
- Prior art date
Links
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 title abstract 6
- 238000000034 method Methods 0.000 title abstract 5
- 238000009434 installation Methods 0.000 title abstract 2
- 238000011084 recovery Methods 0.000 title abstract 2
- 239000004753 textile Substances 0.000 title abstract 2
- 238000009835 boiling Methods 0.000 abstract 2
- 239000012535 impurity Substances 0.000 abstract 2
- 238000000926 separation method Methods 0.000 abstract 2
- 238000009834 vaporization Methods 0.000 abstract 2
- 230000008016 vaporization Effects 0.000 abstract 2
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000011403 purification operation Methods 0.000 abstract 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
Inventia se refera la un procedeu pentru recuperarea NaOH din lesiile reziduale evacuate în procesele tehnologice ale industriei textile caracterizat prin aceea ca colectarea lesiei se face selectiv, dupa criteriul concentrasiei la punctul de evacuare si apoi este supusa operatiei de purificare într-o prima treapta, de separare a impuritatilor uleioase si gravimetrice, urmata de o a doua treapta, pentru separarea impuritatilor fibroase, dupa care este preîncalzita temperaturii de saturatie, introdusa la evaporarea într-un evaporator multiplu circulatia între trepte facîndu-se în echicurent la presiuni si temperaturi descrescatoare fierberea si vaporizarea facîndu-se pe baza unei diferente între temperatura care împarte între corpuri în limite satisfacatoare pentru asigurarea temperaturii de fierbere în corpuri la toate conditiile date pentru agentul încalzitor si la o instalatie pentru realizarea procedeului constituita dintr-un dispozitiv de colectare selectiva, format din pîlnii tronconice, un separator niste trepte de vaporizare cu efect multiplu, un condensator de suprafata racit cu apa, legat la o pompa de vid si un decantor.The invention relates to a process for the recovery of NaOH from residual leachates discharged in the technological processes of the textile industry characterized in that the collection of the lee is selectively, according to the concentration criterion at the outlet point and then subjected to the purification operation in a first step Separation of oily and gravimetric impurities followed by a second step for the separation of fibrous impurities, after which the saturation temperature is preheated and introduced into the evaporator in a multiple evaporator, the circulation between the stages is effected at the same time at decreasing pressures and temperatures Boiling and vaporization on the basis of a difference between the temperature which divides between bodies within satisfactory limits to ensure the boiling temperature in the bodies under all the conditions given for the heater agent and to an installation for carrying out the process consisting of a selective collection device d in the truncated funnels, a separator of multiple vaporization steps, a water-cooled surface condenser connected to a vacuum pump and a decanter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO104967A RO83091B1 (en) | 1981-07-24 | 1981-07-24 | PROCESS FOR RECOVERY OF NaOH FROM THE SPENT LYES DISCHARGED IN THE TEXTILE INDUSTRY AND INSTALLATION FOR CARRYING OUT THE PROCESS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO104967A RO83091B1 (en) | 1981-07-24 | 1981-07-24 | PROCESS FOR RECOVERY OF NaOH FROM THE SPENT LYES DISCHARGED IN THE TEXTILE INDUSTRY AND INSTALLATION FOR CARRYING OUT THE PROCESS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO83091A2 RO83091A2 (en) | 1984-02-21 |
| RO83091B1 true RO83091B1 (en) | 1984-02-28 |
Family
ID=20110276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO104967A RO83091B1 (en) | 1981-07-24 | 1981-07-24 | PROCESS FOR RECOVERY OF NaOH FROM THE SPENT LYES DISCHARGED IN THE TEXTILE INDUSTRY AND INSTALLATION FOR CARRYING OUT THE PROCESS |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO83091B1 (en) |
-
1981
- 1981-07-24 RO RO104967A patent/RO83091B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO83091A2 (en) | 1984-02-21 |
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