SU331663A1 - Method of obtaining caustic soda - Google Patents
Method of obtaining caustic sodaInfo
- Publication number
- SU331663A1 SU331663A1 SU7001467067A SU1467067A SU331663A1 SU 331663 A1 SU331663 A1 SU 331663A1 SU 7001467067 A SU7001467067 A SU 7001467067A SU 1467067 A SU1467067 A SU 1467067A SU 331663 A1 SU331663 A1 SU 331663A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- caustic
- sodium sulfate
- liquor
- sodium
- caustic soda
- Prior art date
Links
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 title claims description 30
- 238000000034 method Methods 0.000 title claims description 7
- 235000011121 sodium hydroxide Nutrition 0.000 title description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 8
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 7
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 6
- 235000011152 sodium sulphate Nutrition 0.000 claims description 6
- 239000003518 caustics Substances 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
- 239000004571 lime Substances 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- 235000017550 sodium carbonate Nutrition 0.000 claims description 2
- 239000012065 filter cake Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Description
Изобретение касаетс получени едкого натри известковым способом.The invention relates to the production of caustic sodium by the lime process.
Известен способ получени едкого натри путем обработки содового раствора известью с получением щелоков, упариванием их до концентрации 630-670 г/л едкого натри и выводом осадка сульфата натри .A method is known for producing sodium hydroxide by treating a soda solution with lime to produce liquors, evaporating them to a concentration of 630-670 g / l sodium hydroxide and removing the sodium sulfate residue.
Предлагаемый способ отличаетс тем, что с целью упрощени процесса вывода сульфата натри и уменьщеии потерь соды и едкого натри вывод осадка сульфата натри осуществл ют после упаривани щелоков до концентрации 350-380 г/л едкого натра.The proposed method is characterized in that, in order to simplify the process of withdrawing sodium sulfate and reduce the loss of soda and caustic sodium, the sodium sulfate precipitate is removed after evaporation of liquor to a concentration of 350-380 g / l sodium hydroxide.
Количество выбрасываемых в отвал соды и едкого натра (NaOH) уменьшаетс в среднем на 60%, сульфата натри увеличиваетс на 50%.The amount of soda and caustic soda (NaOH) discharged into the dumps is reduced by an average of 60%, and sodium sulfate is increased by 50%.
Раствор слабых щелоков из отделени каустификации с температурой 95-98°С и концентрацией NaOH 113-120 г/л, :Ыа2СОз 15- 20 г/л поступает в отделение вакуум-выпарки , где проходит упаривание щелоков.A solution of weak liquor from the caustification unit with a temperature of 95-98 ° C and a NaOH concentration of 113-120 g / l,: Na2CO3 15-20 g / l enters the vacuum evaporation section, where the liquor is evaporated.
Упаренный щелок до концентрации NaOH 350-380 г/л с температурой 90-95°С поступает в декантер - отстойник среднего щелока .One stripped off liquor to a NaOH concentration of 350-380 g / l with a temperature of 90-95 ° C enters the decanter - a settling tank of middle liquor.
Отсто вшийс осадок, образовавшийс при упаривании щелоков в вакуум-аппаратах и содержащий, %: Na2S04 30-55, NaoCOj 10- 20, NaOH 5-15, направл етс на фильтрацию .The sediment formed during evaporation of liquors in vacuum apparatus and containing,%: Na2S04 30-55, NaoCOj 10-20, NaOH 5-15, is sent for filtration.
Отфильтрованный осадок в мешалке репульпируют водой и вывод т в отвал.The filter cake in the mixer is repulped with water and dumped.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU7001467067A SU331663A1 (en) | 1970-08-03 | 1970-08-03 | Method of obtaining caustic soda |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU7001467067A SU331663A1 (en) | 1970-08-03 | 1970-08-03 | Method of obtaining caustic soda |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU331663A1 true SU331663A1 (en) | 1978-02-28 |
Family
ID=20456170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU7001467067A SU331663A1 (en) | 1970-08-03 | 1970-08-03 | Method of obtaining caustic soda |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU331663A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2755186C1 (en) * | 2020-12-25 | 2021-09-14 | Федеральное государственное автономное образовательное учреждение высшего образования "Сибирский федеральный университет" | Method for producing caustic soda |
-
1970
- 1970-08-03 SU SU7001467067A patent/SU331663A1/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2755186C1 (en) * | 2020-12-25 | 2021-09-14 | Федеральное государственное автономное образовательное учреждение высшего образования "Сибирский федеральный университет" | Method for producing caustic soda |
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