SU245036A1 - METHOD FOR CLEANING GAS FROM CHLORINE AND CHLORINE HYDROGEN - Google Patents
METHOD FOR CLEANING GAS FROM CHLORINE AND CHLORINE HYDROGENInfo
- Publication number
- SU245036A1 SU245036A1 SU1213165A SU1213165A SU245036A1 SU 245036 A1 SU245036 A1 SU 245036A1 SU 1213165 A SU1213165 A SU 1213165A SU 1213165 A SU1213165 A SU 1213165A SU 245036 A1 SU245036 A1 SU 245036A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- chlorine
- hydrogen
- cleaning gas
- stage
- suspension
- Prior art date
Links
- 239000007789 gas Substances 0.000 title description 11
- 239000000460 chlorine Substances 0.000 title description 10
- 229910052801 chlorine Inorganic materials 0.000 title description 10
- ZAMOUSCENKQFHK-UHFFFAOYSA-N chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 title description 9
- 238000004140 cleaning Methods 0.000 title description 3
- -1 CHLORINE HYDROGEN Chemical class 0.000 title 1
- 239000001257 hydrogen Substances 0.000 title 1
- 229910052739 hydrogen Inorganic materials 0.000 title 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- 239000000725 suspension Substances 0.000 description 8
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 6
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 6
- 229960003563 Calcium Carbonate Drugs 0.000 description 5
- AXCZMVOFGPJBDE-UHFFFAOYSA-L Calcium hydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 description 5
- 238000000746 purification Methods 0.000 description 5
- 239000001110 calcium chloride Substances 0.000 description 4
- 229910001628 calcium chloride Inorganic materials 0.000 description 4
- 235000011148 calcium chloride Nutrition 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L cacl2 Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 235000015450 Tilia cordata Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 230000005591 charge neutralization Effects 0.000 description 1
- NHYCGSASNAIGLD-UHFFFAOYSA-N chlorine monoxide Inorganic materials Cl[O] NHYCGSASNAIGLD-UHFFFAOYSA-N 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001264 neutralization Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- YZCKVEUIGOORGS-IGMARMGPSA-N protium Chemical compound [1H] YZCKVEUIGOORGS-IGMARMGPSA-N 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000001238 wet grinding Methods 0.000 description 1
Description
Изобретение относитс к области очистки газов от хлора и хлористого водорода.The invention relates to the field of gas purification from chlorine and hydrogen chloride.
Известен способ очистки газов от хлора и хлористого водорода в две ступени путем обработки его известковым молоком на второй ступени. На первой ступени газы обрабатывают водой. В результате получают слабый раствор сол ной кислоты, не наход щий применение .A known method of purification of gases from chlorine and hydrogen chloride in two stages by treating it with lime milk at the second stage. In the first stage, the gases are treated with water. The result is a weak solution of hydrochloric acid that is not used.
С целью повышени эффективности способа предлагаетс очищаемые газы на .первой ступени обрабатывать суспензией карбоната кальци в растворе хлористого кальци . Концентраци в растворе вследствие поглощени хлора и хлористого водорода и испарени воды повышаетс и может быть доведена до 350-450 г/л. Это дает возможность эффективно использовать раствор дл химических производств, например дл производства безводного СаСЬ при помощи распылительной сущки.In order to increase the efficiency of the process, it is proposed to purify the gases of the first stage with a suspension of calcium carbonate in a solution of calcium chloride. Concentration in solution due to the absorption of chlorine and hydrogen chloride and the evaporation of water increases and can be increased to 350-450 g / l. This makes it possible to effectively use the solution for chemical productions, for example, for the production of anhydrous CaCI using a spray spray.
Хлор, оставшийс в газах после первой ступени очистки, поглощаетс на последующих ступен х промывкой известковым молоком. Отработанное известковое молоко обрабатывают известными способами, с целью перевода Са(С1О)2 в СаСЬ, и после отделени твердых взвесей оно может быть использовано дл приготовлени суспензии карбоната кальци , направл емой в первую ступень очистки.The chlorine remaining in the gases after the first cleaning stage is absorbed in subsequent stages by washing with lime milk. Waste milk of lime is processed by known methods, in order to convert Ca (ClO) 2 to CaCl2, and after separating solid suspensions, it can be used to prepare a suspension of calcium carbonate, which is sent to the first purification stage.
Таким образом, предлагаемый способ не предусматривает образование сточных вод, содержащих кислоты, щелочи или соли. Сокращаетс потребность в известковом молоке в св зи с поглощением основного количества хлора на первой ступени очистки известн ком и отсутствием кислотных вод, требующих нейтрализации .Thus, the proposed method does not provide for the formation of wastewater containing acids, alkalis or salts. The need for lime milk is reduced due to the absorption of the main amount of chlorine in the first stage of purification by lime and the absence of acidic water requiring neutralization.
Дл мокрого измельчени известн ка и приготовлени исходной суспензии можно использовать сточные воды химических и металлургических производств, содержащие СаСЬ, что повышает экономическую эффективность извлечени СаСЬ и снижает загр знение водного бассейна сол ми кальци .For wet grinding of limestone and preparing the initial suspension, chemical and metallurgical wastewater containing CaCI can be used, which increases the economic efficiency of CaCI extraction and reduces the pollution of the water basin with calcium salts.
Пример. Газ, содержащий 10 мг/л хлористого водорода и 1 мг/л хлора, обрабатывают суспензией, состо щей из 93 г/л карбоната кальци и 350 г/л хлористого кальци . Врем контактировани газа с суспензией 2,8 сек, температура 50-60°С.Example. A gas containing 10 mg / l of hydrogen chloride and 1 mg / l of chlorine is treated with a suspension consisting of 93 g / l of calcium carbonate and 350 g / l of calcium chloride. The contact time of the gas with the suspension is 2.8 seconds, the temperature is 50-60 ° C.
После контактировани получают газ со степенью очистки от хлористого водорода на 100%, от хлора на 50% (от 64 до 36%).After contacting, gas is obtained with a degree of purification from hydrogen chloride by 100%, from chlorine by 50% (from 64 to 36%).
2525
Анализ суспензии в конце опыта: Карбонат кальци , г/л44 3 Предмет изобретени Способ очистки газов от хлора и хлористого водорода в две ступени путем обработки его известковым молоком на второй ступени, 5 4 отличающийс тем, что, с целью повышени эффективности саособа, очищаемые газы на первой ступени обрабатывают суспензией карбоната кальци в растворе хлористого кальци .Analysis of the suspension at the end of the experiment: Calcium carbonate, g / l 44 3 Subject of the invention. A method for purifying gases from chlorine and hydrogen chloride in two stages by treating it with lime milk in the second stage, 5 4 characterized in that, in order to increase the efficiency of the process, the gases to be cleaned in the first stage, it is treated with a suspension of calcium carbonate in a solution of calcium chloride.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU245036A1 true SU245036A1 (en) |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4362709A (en) * | 1980-11-07 | 1982-12-07 | Veitscheer Magnesitwerke-Actien-Gesellschaft | Process of preparing sinter magnesia |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4362709A (en) * | 1980-11-07 | 1982-12-07 | Veitscheer Magnesitwerke-Actien-Gesellschaft | Process of preparing sinter magnesia |
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