SU117095A1 - The method of controlling the temperature of the fluidized bed during firing sulphide materials - Google Patents
The method of controlling the temperature of the fluidized bed during firing sulphide materialsInfo
- Publication number
- SU117095A1 SU117095A1 SU580396A SU580396A SU117095A1 SU 117095 A1 SU117095 A1 SU 117095A1 SU 580396 A SU580396 A SU 580396A SU 580396 A SU580396 A SU 580396A SU 117095 A1 SU117095 A1 SU 117095A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- fluidized bed
- temperature
- controlling
- bed during
- during firing
- Prior art date
Links
Landscapes
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Description
Дл регулировани температуры при обжиге сульфидных концентратов в кип щий слой в распыленном состо нии ввод т воду. Это приводит к повышению влажности отход щих газов и снижению концентрации образующейс серной кислоты, избыток которой сбрасываетс в отвал .Water is introduced into the fluidized bed in a sprayed state to control the temperature during calcination of sulfide concentrates. This leads to an increase in the moisture content of the exhaust gases and a decrease in the concentration of sulfuric acid produced, the excess of which is dumped into the dump.
Описываемый способ регулировани температуры кип щего сло при обжиге сульфидных материалов позвол ет получать пазы с повышенной концентрацией сернистого ангидрида и, следовательно, увеличивает концентрацию образующейс серной кислоты, что устран ет необходимость сброса ее в отвал. Достигаетс это тем, что в кип щий слой вместо воды ввод т в распыленном состо нии образующуюс в технологическом цикле промывную серную кислоту невысокой концентрации, которую раньше сбрасывали в отвал. Охлаждение кип щего сло описываемым способом может осуществл тьс также и в сочетании с теплообменниками , охлаждаемыми водой или воздухом.The described method of controlling the temperature of the fluidized bed during calcining of sulphide materials makes it possible to obtain grooves with an increased concentration of sulfur dioxide and, therefore, increases the concentration of sulfuric acid produced, which eliminates the need to dump it. This is achieved by replacing, in the sprayed state, instead of water, in a sprayed state, the sulfuric acid washing in the process cycle of low concentration, which was previously dumped. The cooling of the fluidized bed by the described method can also be carried out in combination with heat exchangers cooled by water or air.
Протекающие при введении в разбавленный слой промывной серной кислоты физико-химические процессы заключаютс в том, что при 800-900° вода в кип щем слое испар етс , а серна кислота диссоциирует с поглощением тепла на пары воды, сернистый ангидрид и кислород . При этом температура кип щего сло снижаетс , обжиговые газы обогащаютс сернистым ангидридом, а кислород окисл ет сульфиды, содержащиес в обжигаемом материале, образу дополнительные количества сернистого ангидрида. Обжиговые газы направл ютс в сернокислотный цех дл получени концентрированной серной кислоты. По пути они проход т промывную бащню, где пары воды конденсируютс с образованием промывной слабой серной кислоты, содержащей моногидрита (H2SO4) 30% и выше.The physicochemical processes that occur when a sulfuric acid wash is introduced into a dilute layer consist in that at 800–900 ° the water in the fluidized bed evaporates and the sulfuric acid dissociates with heat absorption into water vapor, sulfurous anhydride and oxygen. At the same time, the temperature of the fluidized bed is reduced, the burning gases are enriched with sulfuric anhydride, and the oxygen oxidizes the sulfides contained in the material to be calcined, forming additional amounts of sulfurous anhydride. The firing gases are sent to the sulfuric acid plant to produce concentrated sulfuric acid. Along the way, they pass through a wash, where water vapors condense to form a wash with weak sulfuric acid containing monohydrite (H2SO4) 30% or more.
Эта промывна кислота вновь используетс дл охлаждени кип щего сло .This wash acid is again used to cool the bed.
Предмет изобретени Subject invention
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU580396A SU117095A1 (en) | 1957-07-12 | 1957-07-12 | The method of controlling the temperature of the fluidized bed during firing sulphide materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU580396A SU117095A1 (en) | 1957-07-12 | 1957-07-12 | The method of controlling the temperature of the fluidized bed during firing sulphide materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU117095A1 true SU117095A1 (en) | 1957-11-30 |
Family
ID=48389274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU580396A SU117095A1 (en) | 1957-07-12 | 1957-07-12 | The method of controlling the temperature of the fluidized bed during firing sulphide materials |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU117095A1 (en) |
-
1957
- 1957-07-12 SU SU580396A patent/SU117095A1/en active
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