SU1237243A1 - Method of cleaning gases from nitrogen oxides - Google Patents
Method of cleaning gases from nitrogen oxides Download PDFInfo
- Publication number
- SU1237243A1 SU1237243A1 SU843771924A SU3771924A SU1237243A1 SU 1237243 A1 SU1237243 A1 SU 1237243A1 SU 843771924 A SU843771924 A SU 843771924A SU 3771924 A SU3771924 A SU 3771924A SU 1237243 A1 SU1237243 A1 SU 1237243A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- nitrogen oxides
- cleaning gases
- urea
- sulfamic acid
- absorber
- Prior art date
Links
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 title claims description 20
- 239000007789 gas Substances 0.000 title claims description 5
- 238000000034 method Methods 0.000 title claims description 5
- 238000004140 cleaning Methods 0.000 title claims 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 7
- 239000004202 carbamide Substances 0.000 claims description 7
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 4
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000002262 irrigation Effects 0.000 description 2
- 238000003973 irrigation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000012224 working solution Substances 0.000 description 2
- 239000002360 explosive Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011012 sanitization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Description
Изобретение, относитс к способам санитарной очистки вентил ционных выбросов, содержащих оксиды азота, и может быть применено в химической и других отрасл х промышленности.The invention relates to methods for sanitizing ventilation emissions containing nitrogen oxides, and can be applied in the chemical and other industries.
Цель изобретени - снижение расхода мочевины.The purpose of the invention is to reduce the consumption of urea.
Пример. На опытно-промьшшен- ной установке в качестве абсорбента использовали раствор, содержащий 5- 10% раствора мочевины и до 0,3-0,5% сульфаминовой кислоты, нагретый до 75-80 С, при следующих технологических параметрах:Example. At the pilot plant, a solution containing 5-10% urea solution and up to 0.3-0.5% sulfamic acid heated to 75-80 ° C was used as an absorbent with the following process parameters:
ПроизводительностьPerformance
по газу, м /ч 900 Концентраци gas m / h 900 Concentration
N0 на входе, г/м 0,5-5,4 Гидравлическое сопротивление абсорбера, кгс 1,4 Скорость газа в сечении насадоч- ного сло , м/с 3,0 Плотность 1 N0 at the inlet, g / m 0.5-5.4 Hydraulic resistance of the absorber, kgf 1.4 Gas velocity in the cross section of the packed layer, m / s 3.0 Density 1
орошени , л/м 0,35 Температура газа, поступающего.на очистку, С 20-34irrigation, l / m 0.35 Temperature of gas entering. For purification, C 20-34
5five
00
5five
Дл подогрева абсорбента примен ли электрообогреваемую емкость, одновременно использутопотос дл приготовлени рабочего раствора.An electrically heated container was used to heat the absorbent, while simultaneously using a mixture to prepare the working solution.
Мочевину и сульфаминопую кислоту вводрши в воду в сухом виде расчетными порци ми.Urea and sulfamic acid are introduced into the water in dry form in calculated portions.
Подача рабочего раствора на орошение осуществл лась из электрообо- греваемой емкости насосом по схеме: емкость - инерционно-фильтрующий абсорбер - емкость.The working solution for irrigation was supplied from the electrically heated tank by the pump according to the scheme: tank — inertial filter absorber — tank.
При этом оксиды азота восстанавливались до азота; сульфаминова кислота также принимала участие в восстановлении с образованием азота и серной кислоты, преп тствующей образованию взрывоопасных нитратов.At the same time, nitrogen oxides were reduced to nitrogen; Sulfamic acid was also involved in the reduction with the formation of nitrogen and sulfuric acid, which prevents the formation of explosive nitrates.
Степень восстановлени оксидов азота водным раствором смеси мочевины с сульфаминовой кислотой в зависимости от температуры представлена в таблице.The degree of reduction of nitrogen oxides with an aqueous solution of a mixture of urea and sulfamic acid, depending on the temperature, is presented in the table.
Расход мочевины при 99,8%-ной степени очистки от NOy составил 0,82 т, а сульфаминовой кислоты 0,03 т на I т обезвреженных NOy.The consumption of urea at 99.8% degree of purification from NOy was 0.82 tons, and sulfamic acid was 0.03 tons per I t of neutralized NOy.
Конпентрают оксидов азота, г/мThe concentration of nitrogen oxides, g / m
на входе в абсорберat the entrance to the absorber
2,26 3,16 5,062.26 3.16 5.06
на выходе из абсорбераat the outlet of the absorber
0,014 0,035 0,0100.014 0.035 0.010
Составитель Г.Винокурова Редактор Л.Пчелинска Техред Л.Олейник Корректор Т.КолбCompiler G.Vinokurova Editor L.Pchelinska Tehred L.Oleinik Proofreader T.Kolb
3222/83222/8
Тираж 663ПодписноеCirculation 663 Subscription
ВНИИПИ Государственного комитета СССРVNIIPI USSR State Committee
по делам изобретений и открытий N3035, Москва, Ж-35, Раушска наб., д.4/5for inventions and discoveries N3035, Moscow, Zh-35, Raushsk nab., 4/5
Производственно-полиграфическое предпри тие, г.Ужгород, ул.Проектна ,4Production and printing company, Uzhgorod, Projecto st., 4
12372431237243
Продолжение таблицыTable continuation
Степень восстановлени оксидов азота.The degree of reduction of nitrogen oxides.
Исходна степень окислен- ности N0,Initial degree of oxidation is N0,
99,4 98,9 99,899.4 98.9 99.8
76 76 7876 76 78
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU843771924A SU1237243A1 (en) | 1984-07-31 | 1984-07-31 | Method of cleaning gases from nitrogen oxides |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU843771924A SU1237243A1 (en) | 1984-07-31 | 1984-07-31 | Method of cleaning gases from nitrogen oxides |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1237243A1 true SU1237243A1 (en) | 1986-06-15 |
Family
ID=21131197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU843771924A SU1237243A1 (en) | 1984-07-31 | 1984-07-31 | Method of cleaning gases from nitrogen oxides |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1237243A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5693190A (en) * | 1993-07-01 | 1997-12-02 | Basf Aktiengesellschaft | Recovery of glycols from used antifreeze compositions by distillation |
| EA016351B1 (en) * | 2009-11-09 | 2012-04-30 | Открытое Акционерное Общество "Научно-Исследовательский Институт По Удобрениям И Инсектофунгицидам Им. Профессора Я.В. Самойлова" | Method for producing sulfuric acid from hydrosulfuric gas |
| RU2501596C2 (en) * | 2008-08-08 | 2013-12-20 | Лаб Са | Method and plant for purification of combustion gases containing nitrogen oxides |
-
1984
- 1984-07-31 SU SU843771924A patent/SU1237243A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Авторское свидетельство СССР № 186985, кл. В 01 D 53/14 1966. - Патент US № 3565575, кл. В 01 D 53/00, 1971. * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5693190A (en) * | 1993-07-01 | 1997-12-02 | Basf Aktiengesellschaft | Recovery of glycols from used antifreeze compositions by distillation |
| RU2501596C2 (en) * | 2008-08-08 | 2013-12-20 | Лаб Са | Method and plant for purification of combustion gases containing nitrogen oxides |
| EA016351B1 (en) * | 2009-11-09 | 2012-04-30 | Открытое Акционерное Общество "Научно-Исследовательский Институт По Удобрениям И Инсектофунгицидам Им. Профессора Я.В. Самойлова" | Method for producing sulfuric acid from hydrosulfuric gas |
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