SU386661A1 - CATALYST FOR SELECTIVE GAS CLEANING FROM NITROGEN OXIDES - Google Patents

CATALYST FOR SELECTIVE GAS CLEANING FROM NITROGEN OXIDES

Info

Publication number
SU386661A1
SU386661A1 SU1420341A SU1420341A SU386661A1 SU 386661 A1 SU386661 A1 SU 386661A1 SU 1420341 A SU1420341 A SU 1420341A SU 1420341 A SU1420341 A SU 1420341A SU 386661 A1 SU386661 A1 SU 386661A1
Authority
SU
USSR - Soviet Union
Prior art keywords
catalyst
nitrogen oxides
gas cleaning
selective gas
hours
Prior art date
Application number
SU1420341A
Other languages
Russian (ru)
Inventor
В. И. Атрощенко О. Н. Кулиш Харьковский ордена Ленина политехнический институт В. И. Ленина витель А. П. Засорин
Original Assignee
Авторы изобретени
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Авторы изобретени filed Critical Авторы изобретени
Priority to SU1420341A priority Critical patent/SU386661A1/en
Application granted granted Critical
Publication of SU386661A1 publication Critical patent/SU386661A1/en

Links

Landscapes

  • Catalysts (AREA)

Description

1one

Изобретение относитс  к каталитическим способам очистки отход щих газов от окислов азота, выбрасываемых в атмосферу в различных производствах, - азотной кислоты, некоторых катализаторов, нитрита аммони  дл  капролактама, р да производств органического синтеза и др.This invention relates to catalytic methods for purifying waste gases from nitrogen oxides released into the atmosphere in various industries — nitric acid, certain catalysts, ammonium nitrite for caprolactam, a number of organic synthesis industries, and others.

Известен катализатор дл  селективной очистки газов от окислов азота, состо щий из окислов щелочных металлов и/или окиси бари  на носителе, например окиси магни .A known catalyst for the selective purification of gases from nitrogen oxides, consisting of alkali metal oxides and / or barium oxide on a carrier, for example, magnesium oxide.

Однако при этом отмечаетс  невысока  степень очистки газа.However, there is a low degree of gas purification.

С целью повышени  степени очистки газов предложен катализатор, активна  фаза которого содержит 1,0-2,0 вес. % К, Na, Си, Zn, а в качестве носител  вз то 98,0-99,0 вес. % РегОз.In order to increase the degree of gas purification, a catalyst has been proposed, the active phase of which contains 1.0-2.0 wt. % K, Na, Cu, Zn, and 98.0-99.0 wt. As a carrier. % RegOz.

Этот катализатор позвол ет повысить степень конверсии до 95,0-95,5% при 330-400°С и избытке аммиака не более 20-25% против стехиометрического.This catalyst allows to increase the degree of conversion to 95.0-95.5% at 330-400 ° C and an excess of ammonia of no more than 20-25% against stoichiometric.

Дл  получени  катализатора берут раствор, сульфата железа с добавками Na, К, Си и Zn возможно большей чистоты, к которому припивают раствор гидрата аммони  до выпадени  осадка. Затем раствор подогревают, осадку дают отсто тьс  и жидкость декантируют. Затем осадок промывают до полного удалени  ионов SO4 и сушат в течение 5 час при температуре до 200°С. Полученный порошок прессуют в таблетки размером 5X5 мм, а затем в течение 2 час прокаливают при температуре до 600°С. Полученный катализатор перед работой в контактном аппарате восстанавливают в течение 3-5 час в токе водорода или азотно-водородной смеси при 300- 350°С и объемной скорости 1000-2000 час . При этом катализаторе степень разложени  окислов азота 95-96% при объемных скорост х 10000-40000 час температуре контактировани  330-400°С и избытке аммиака 20-25% против стехиометрического при содержании в газах до 3-5% кислорода.In order to obtain a catalyst, a solution is taken of ferrous sulfate with additives of Na, K, Cu and Zn of the highest purity possible, to which a solution of ammonium hydrate is added to the precipitate. The solution is then heated, the precipitate is allowed to settle and the liquid is decanted. Then the precipitate is washed until all the SO4 ions are completely removed and dried for 5 hours at a temperature of up to 200 ° C. The resulting powder is pressed into tablets of size 5X5 mm, and then calcined for 2 hours at temperatures up to 600 ° C. The catalyst obtained, before operating in a contact apparatus, is reduced within 3-5 hours in a stream of hydrogen or a nitrogen-hydrogen mixture at 300-350 ° C and a space velocity of 1000-2000 hours. In this catalyst, the degree of decomposition of nitrogen oxides is 95-96% at volumetric speeds of 10,000-40000 hours and the contact temperature is 330-400 ° C and an excess of ammonia of 20-25% versus stoichiometric content of up to 3-5% oxygen in gases.

Предмет изобретени Subject invention

Катализатор дл  селективной очистки газов от окислов азота, состо щий из активной фазы, включающей щелочной металл, и носител , отличающийс  тем, что, с целью повышени  степени очистки газа, активна  фазаA catalyst for the selective purification of gases from nitrogen oxides, consisting of an active phase comprising an alkali metal and a carrier, characterized in that, in order to increase the degree of gas purification, the active phase

содержит 1,0-2,0 вес. % К, Na, Си, Zn, а в качестве носител  вз то 98,0-99,0 вес. % РегОз.contains 1.0-2.0 weight. % K, Na, Cu, Zn, and 98.0-99.0 wt. As a carrier. % RegOz.

SU1420341A 1970-03-27 1970-03-27 CATALYST FOR SELECTIVE GAS CLEANING FROM NITROGEN OXIDES SU386661A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1420341A SU386661A1 (en) 1970-03-27 1970-03-27 CATALYST FOR SELECTIVE GAS CLEANING FROM NITROGEN OXIDES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1420341A SU386661A1 (en) 1970-03-27 1970-03-27 CATALYST FOR SELECTIVE GAS CLEANING FROM NITROGEN OXIDES

Publications (1)

Publication Number Publication Date
SU386661A1 true SU386661A1 (en) 1973-06-21

Family

ID=20451313

Family Applications (1)

Application Number Title Priority Date Filing Date
SU1420341A SU386661A1 (en) 1970-03-27 1970-03-27 CATALYST FOR SELECTIVE GAS CLEANING FROM NITROGEN OXIDES

Country Status (1)

Country Link
SU (1) SU386661A1 (en)

Similar Documents

Publication Publication Date Title
ATE257403T1 (en) METHOD FOR SIMULTANEOUSLY REMOVAL OF NITROGEN OXIDES AND DINITROGEN OXIDE FROM GASES
GB1362659A (en) Oxidative dehydrogenation of organic compounds
US3008796A (en) Method of purifying gases containing oxygen and oxides of nitrogen
GB1361913A (en) Removing nitrogen oxides from gases
EP0317293A3 (en) A process for removing nitrogen oxides and a catalyst used for the process
NL8001309A (en) CATALYST FOR THE REMOVAL OF NITROGEN OXIDES FROM THIS GAS FLOW.
SU386661A1 (en) CATALYST FOR SELECTIVE GAS CLEANING FROM NITROGEN OXIDES
US3981971A (en) Process for reducing nitrogen oxides
US3512925A (en) Selective removal of nitrogen dioxide and/or oxygen from gas mixtures containing nitric oxide
GB1058970A (en) Production of nitric oxide
SU421166A3 (en)
GB1229107A (en)
US1391332A (en) Process of oxidizing gases
JPH0356779B2 (en)
IL40262A (en) A catalyst,its method of production and the utilisation of same for the purification of exhaust gases from internal combustion engines
JPH01219013A (en) Zeolite containing copper, its production, catalyst for removing o2 from co gas, consisting of zeolite and method for removing o2 in co gas
PL225942B1 (en) Monolithic catalyst for low- and medium temperature decomposition of dinitrogen monoxide and method for producing it
EP0657384B1 (en) Process for producing hydrogen cyanide
JPS581615B2 (en) Ammonia
SU220241A1 (en) The method of deep purification of nitrous gases from nitrogen oxides
JPS5837009B2 (en) NH3 Niyori Endo Gaskara NOX Ojiyokyo Surhouhou
US4105745A (en) Catalyst and process for reducing nitrogen oxides
JPS6219895B2 (en)
RU2077933C1 (en) Method for scrubbing gases against nitrogen compounds
JPS5845887B2 (en) Method for removing nitrogen oxides from exhaust gas