SU996331A1 - Method for inhibiting hydrogen sulfide oxidation in solutions - Google Patents
Method for inhibiting hydrogen sulfide oxidation in solutions Download PDFInfo
- Publication number
- SU996331A1 SU996331A1 SU813274231A SU3274231A SU996331A1 SU 996331 A1 SU996331 A1 SU 996331A1 SU 813274231 A SU813274231 A SU 813274231A SU 3274231 A SU3274231 A SU 3274231A SU 996331 A1 SU996331 A1 SU 996331A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- solution
- hydrogen sulfide
- urea
- elemental sulfur
- solutions
- Prior art date
Links
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 title claims description 9
- 229910000037 hydrogen sulfide Inorganic materials 0.000 title claims description 9
- 238000000034 method Methods 0.000 title claims description 9
- 230000002401 inhibitory effect Effects 0.000 title claims description 4
- 230000003647 oxidation Effects 0.000 title claims description 4
- 238000007254 oxidation reaction Methods 0.000 title claims description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 22
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 13
- 239000004202 carbamide Substances 0.000 claims description 11
- 235000013877 carbamide Nutrition 0.000 claims description 11
- 239000003153 chemical reaction reagent Substances 0.000 claims description 4
- 238000005188 flotation Methods 0.000 claims description 4
- 230000005764 inhibitory process Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- 239000011593 sulfur Substances 0.000 claims description 2
- QIVUCLWGARAQIO-OLIXTKCUSA-N (3s)-n-[(3s,5s,6r)-6-methyl-2-oxo-1-(2,2,2-trifluoroethyl)-5-(2,3,6-trifluorophenyl)piperidin-3-yl]-2-oxospiro[1h-pyrrolo[2,3-b]pyridine-3,6'-5,7-dihydrocyclopenta[b]pyridine]-3'-carboxamide Chemical compound C1([C@H]2[C@H](N(C(=O)[C@@H](NC(=O)C=3C=C4C[C@]5(CC4=NC=3)C3=CC=CN=C3NC5=O)C2)CC(F)(F)F)C)=C(F)C=CC(F)=C1F QIVUCLWGARAQIO-OLIXTKCUSA-N 0.000 claims 1
- 238000000746 purification Methods 0.000 claims 1
- 239000003643 water by type Substances 0.000 claims 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 230000007423 decrease Effects 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- -1 hydrosulfide ions Chemical class 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 1
- 150000004056 anthraquinones Chemical class 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Removal Of Specific Substances (AREA)
- Treating Waste Gases (AREA)
Description
Изобретение относится к очистке сточных вод, а именно к очистке сточ ных вод, содержащих сероводород. Известен способ перевода гидросульфИДных ионов HS и сульфидных ионов S1 в молекулярно растворенный HjS при продувке воды дымовыми газами, содержащими. СО^, либо подкислением серной или соляной кислотой до рН£ 5 [1].уThe invention relates to wastewater treatment, namely to the treatment of wastewater containing hydrogen sulfide. A known method of converting hydrosulfide ions HS and sulfide ions S 1 to molecularly dissolved HjS by blowing water with flue gases containing. СО ^, or acidification with sulfuric or hydrochloric acid to pH £ 5 [1].
Однако этот способ требует сложного аппаратурного оформления из антикоррозионных материалов. Кроме того, при продувке дымовыми газами возможен вынос сероводорода в атмосферу.However, this method requires complex hardware design of anti-corrosion materials. In addition, when purging with flue gases, the removal of hydrogen sulfide into the atmosphere is possible.
Наиболее близким к предлагаемому по технической сущности и достигаемому результату является способ ингибирования окисления сероводорода в растворах путем введения антрахинона. Процесс осуществляют в сильног щелочной среде при pH 9-12. При понижении pH 70-80% сероводорода окисляется до·' элементарной серы £23.Closest to the proposed technical essence and the achieved result is a method of inhibiting the oxidation of hydrogen sulfide in solutions by introducing anthraquinone. The process is carried out in a strong alkaline environment at a pH of 9-12. With a decrease in pH of 70-80%, hydrogen sulfide is oxidized to 'elemental sulfur of £ 23.
Недостатком известного способа является низкая степень ингибирования.The disadvantage of this method is the low degree of inhibition.
Цель изобретения - повышение степени ингибирования.The purpose of the invention is to increase the degree of inhibition.
Поставленная цель достигается тем, что согласно способу ингибирования окисления сероводорода в растворах путем введения реагента, в качестве реагента вводят карбамид.The goal is achieved in that according to the method of inhibiting the oxidation of hydrogen sulfide in solutions by introducing a reagent, carbamide is introduced as a reagent.
Карбамид вводят в количестве 0,20,3 г/л.Urea is introduced in an amount of 0.20.3 g / L.
Пример 1. В раствор, содержащий 8 г/л серной кислоты и 50 мг/л сероводорода, вводят о,02кг/л карбамида. Через двое суток в растворе обнаружено 18 мг/л элементарной серы. Без введения карбамида в том же растворе обнаружено 25 мг/л.элементарной серы.Example 1. In a solution containing 8 g / l of sulfuric acid and 50 mg / l of hydrogen sulfide, o, 02 to g / l of urea is introduced. After two days, 18 mg / L of elemental sulfur was detected in the solution. Without the introduction of urea, 25 mg / L of elemental sulfur was found in the same solution.
Пр им ер 2. В раствор состава по примеру 1 вводят 0,03 г/л карбамида. Через двое суток в растворе обнаружено 15 мг/л элементарной серы.Example 2. Into a solution of the composition of Example 1, 0.03 g / L of urea is introduced. After two days, 15 mg / L of elemental sulfur was detected in the solution.
ПримерЗ. В раствор, содержащий 100 г/л серной кислоты, ЗООг/л сульфата натрия, 160 мг/л сероводорода и 20 мг/л элементарной серы, вводят 0,2 г/л карбамида и перемешивают в закрытом сосуде. Через 4 ч в растворе обнаружено 44 мг/л элемен* тарной серы. Без введения карбамида в том же растворе и при тех же условиях обнаружено 96 мг/л элементарной серы.Example 3. 0.2 g / l of urea are introduced into a solution containing 100 g / l of sulfuric acid, ZOOg / l of sodium sulfate, 160 mg / l of hydrogen sulfide and 20 mg / l of elemental sulfur and mixed in a closed vessel. After 4 hours, 44 mg / L of elemental sulfur was detected in the solution. Without the introduction of urea, 96 mg / L of elemental sulfur was found in the same solution and under the same conditions.
Пример 4. В раствор состава по примеру 3 вводят 0,3 г/л карбамида. Через 4 ч в растворе обнаружено 38 мг/л элементарной серы.Example 4. In the solution of the composition according to example 3 injected 0.3 g / l of urea. After 4 hours, 38 mg / L of elemental sulfur was detected in the solution.
Изобретение позволяет в 2-3 раза уменьшить содержание элементарной серы в растворе. При этом соответственно уменьшается нагрузка на фильт ровальное или флотационное оборудование для удаления серы, в результате чего уменьшается необходимое число флотационных аппаратов или увеличивается время работы фильтров между их промывками. Одновременно улучшается работа всего технологического обо-15 рудования.The invention allows to reduce the content of elemental sulfur in a solution by 2-3 times. In this case, the load on the filtering or flotation equipment for sulfur removal decreases correspondingly, as a result of which the required number of flotation apparatuses decreases or the operating time of the filters between their washes increases. At the same time, the work of all technological equipment is improving.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU813274231A SU996331A1 (en) | 1981-04-07 | 1981-04-07 | Method for inhibiting hydrogen sulfide oxidation in solutions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU813274231A SU996331A1 (en) | 1981-04-07 | 1981-04-07 | Method for inhibiting hydrogen sulfide oxidation in solutions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU996331A1 true SU996331A1 (en) | 1983-02-15 |
Family
ID=20952863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU813274231A SU996331A1 (en) | 1981-04-07 | 1981-04-07 | Method for inhibiting hydrogen sulfide oxidation in solutions |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU996331A1 (en) |
-
1981
- 1981-04-07 SU SU813274231A patent/SU996331A1/en active
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