SU245012A1 - METHOD FOR CLEANING OUT OF GASES IN SULFUR ACID STATE SYSTEMS - Google Patents
METHOD FOR CLEANING OUT OF GASES IN SULFUR ACID STATE SYSTEMSInfo
- Publication number
- SU245012A1 SU245012A1 SU1232463A SU1232463A SU245012A1 SU 245012 A1 SU245012 A1 SU 245012A1 SU 1232463 A SU1232463 A SU 1232463A SU 1232463 A SU1232463 A SU 1232463A SU 245012 A1 SU245012 A1 SU 245012A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- gases
- hydrogen peroxide
- sulfur acid
- cleaning out
- acid state
- Prior art date
Links
- 239000007789 gas Substances 0.000 title claims description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 title claims description 7
- 238000004140 cleaning Methods 0.000 title description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 14
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 14
- 239000006096 absorbing agent Substances 0.000 claims description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 238000000746 purification Methods 0.000 claims description 2
- 239000000243 solution Substances 0.000 claims description 2
- 239000002912 waste gas Substances 0.000 claims 1
- RAHZWNYVWXNFOC-UHFFFAOYSA-N sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 8
- 229910052813 nitrogen oxide Inorganic materials 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N nitric acid Chemical class O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 230000001590 oxidative Effects 0.000 description 1
- 239000003415 peat Substances 0.000 description 1
- 239000012224 working solution Substances 0.000 description 1
Description
Изобретение относитс к очистке газов от окислов азота и двуокиси серы.This invention relates to the purification of gases from nitrogen oxides and sulfur dioxide.
Известен способ очистки газов от указанных примесей путем поглощени их торфом с щелочными добавками.A known method of cleaning gases from these impurities by absorbing them with peat with alkaline additives.
Дл расширени ассортимента примен емых поглотителей, а также повышени степени очистки по предложенному способу в качестве поглотител используют водный раствор перекиси водорода в присутствии аммиака.To expand the range of absorbers used, as well as to increase the purity of the proposed method, an aqueous solution of hydrogen peroxide in the presence of ammonia is used as an absorber.
Пример. Выхлопные газы с содержанием окпслов азота 0,3-0,4% и двуокиси серы 0,15-0,25% подают в башню, установленную в конце системы и орошаемую водным раствором перекиси водорода. При взаимодействии последней с кислыми газами образуетс серна и азотна кислоты, возвращаемые в голову системы. Если абсорбционный аппарат выполнен в виде абсорбера с пенным контактом фаз, то поглотительный раствор на последней по ходу газа полке, куда поступает свежа перекись водорода, должен иметь щелочную среду. С этой целью на верхнюю полку аппарата вместе с перекисью водорода подают аммиак в количестве, обеспечивающем поддержание щелочной среды рН 10-12. АммиакExample. Exhaust gases with a content of nitrogen oxides of 0.3-0.4% and sulfur dioxide 0.15-0.25% are fed to a tower installed at the end of the system and irrigated with an aqueous solution of hydrogen peroxide. When the latter interacts with acid gases, sulfuric and nitric acids are returned to the system’s head. If the absorption apparatus is made in the form of an absorber with foamy phase contact, then the absorption solution on the last shelf along the gas, where fresh hydrogen peroxide enters, must have an alkaline medium. To this end, ammonia is supplied to the upper shelf of the apparatus along with hydrogen peroxide in an amount that ensures the maintenance of an alkaline medium pH 10-12. Ammonia
играет роль катализатора, ускор ющего процесс окислени окиси азота и двуокиси серы. Кроме того, он создает щелочную среду рабочего раствора, в которой окись азота не выдел етс в газовую фазу. Содерл апие двуокиси серы в очищенном газе 0,005%, окислов азота 0,01%. Расход перекиси водорода 0,5-1,0 кг на т серной кислоты.plays the role of a catalyst that accelerates the process of oxidizing nitric oxide and sulfur dioxide. In addition, it creates an alkaline working solution environment in which nitric oxide is not released into the gas phase. Soderl apie sulfur dioxide in the purified gas of 0.005%, nitrogen oxides 0.01%. The consumption of hydrogen peroxide is 0.5-1.0 kg per ton of sulfuric acid.
Предложенный способ позвол ет также снизить количество выбрасываемых окислов азота с выхлопными газами с 10-20 кг до 6-7 кг на 1 т .получаемой серной кислоты.The proposed method also makes it possible to reduce the amount of nitrogen oxides emitted with exhaust gases from 10–20 kg to 6–7 kg per ton of sulfuric acid produced.
Предмет изобретени Subject invention
Claims (2)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU245012A1 true SU245012A1 (en) |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2148244A1 (en) * | 1970-09-30 | 1972-04-06 | Air Liquide | Methods for cleaning up combustion products before they are released into the atmosphere |
| RU2692382C1 (en) * | 2018-08-01 | 2019-06-24 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Челябинский государственный университет" | Method for removing off gases from sulfur oxides with obtaining commercial products |
| RU2740015C1 (en) * | 2019-12-03 | 2020-12-30 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Челябинский государственный университет" | Method of cleaning off-gases from chlorine and sulfur oxide to obtain binder |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2148244A1 (en) * | 1970-09-30 | 1972-04-06 | Air Liquide | Methods for cleaning up combustion products before they are released into the atmosphere |
| RU2692382C1 (en) * | 2018-08-01 | 2019-06-24 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Челябинский государственный университет" | Method for removing off gases from sulfur oxides with obtaining commercial products |
| RU2740015C1 (en) * | 2019-12-03 | 2020-12-30 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Челябинский государственный университет" | Method of cleaning off-gases from chlorine and sulfur oxide to obtain binder |
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