SU184261A1 - R.A.N.P. Konkov, L.M. Polkova and E.P. Vershig "nal" p; -; 'e-aJBHSKlvfictfA;.' BPB-SOT ^^ pd - Google Patents
R.A.N.P. Konkov, L.M. Polkova and E.P. Vershig "nal" p; -; 'e-aJBHSKlvfictfA;.' BPB-SOT ^^ pdInfo
- Publication number
- SU184261A1 SU184261A1 SU866606A SU866606A SU184261A1 SU 184261 A1 SU184261 A1 SU 184261A1 SU 866606 A SU866606 A SU 866606A SU 866606 A SU866606 A SU 866606A SU 184261 A1 SU184261 A1 SU 184261A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- vershig
- polkova
- konkov
- ajbhsklvfictfa
- bpb
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
Description
Проблема обезвреживани выхлопных газов азотнокислотных цехов до насто щего времени нолностью не разрешена. Азотнокислотные производства выбрасывают большие количества газа с концентрацией окислов азота от 0,4 до 0,8%, что превышает санитарные нормы.The problem of exhaust gas neutralization at nitric acid shops has not been fully resolved to date. Nitric acid production emit large quantities of gas with a concentration of nitrogen oxides from 0.4 to 0.8%, which exceeds sanitary standards.
Способ каталитической очистки выхлопных газов от окислов азота с номощью горючих газов-восстановителей вл етс наиболее эффективным из известных, но в качестве катализаторов при этом используют редкие металлы , что тормозит внедрение в производство указанного метода.The method of catalytic purification of exhaust gases from nitrogen oxides with the use of combustible reducing gases is the most effective known, but rare metals are used as catalysts, which hampers the introduction of this method into production.
По предлагаемому способу в качестве катализатора примен ют активную бкись алюмини в смеси с тонко измельченным каолином, который при давлении 5-6 ати, 520-540°С, содержании кислорода в хвостовых газах 2,7- 4% и соотношении СН4:О2 0,5-0,6 очиш,ает хвостовые нитрозные газы от окислов азота до 0-0,011%.According to the proposed method, active aluminum casting is used as a catalyst in a mixture with finely ground kaolin, which at a pressure of 5-6 ati, 520-540 ° C, oxygen content in tail gases is 2.7-4% and the ratio of CH4: O2 0, 5-0.6 ochish, yields tail nitrous gases from nitrogen oxides to 0-0,011%.
Пример. Процесс провод т при объемной скорости 10000 нмл/мз час, температуре в реакционной зоне 736-830 С и давлении 5- 6 ати. В качестве восстановител используют метановую фракцию, получаемую при разделении коксового газа и содержашую (в %): СН.1-82-84, СО-11 -12, ,5, т желых углеводородов - 0,2-0,4, Ng - до.З. Example. The process is carried out at a space velocity of 10,000 Nl / m3 h, a temperature in the reaction zone of 736-830 C, and a pressure of 5-6 MPa. The methane fraction obtained in the separation of coke oven gas and containing (in%) is used as a reducing agent: СН.1-82-84, СО-11-12, 5, heavy hydrocarbons - 0.2-0.4, Ng - Do.W.
Ниже приведены результаты анализа газов до и после очистки.Below are the results of gas analysis before and after cleaning.
Хвостовые нитрозные газы Tail nitrous gases
%: в смеси с восстановителем%: mixed with reducing agent
после очистки after cleaning
до очистки NO+NOa . . . 0,16-0,25 0,0-0,011 before cleaning NO + NOa. . . 0.16-0.25 0.0-0.011
СН4 2,0 2,2 0,29 CH4 2.0 2.2 0.29
О, 2,7-4,0 0,02 0,36 O, 2.7-4.0 0.02 0.36
СО0,25 0,39 CO0.25 0.39
Н,- 0,0036 H, - 0.0036
КНз .....Азотостальное остальноеCNZ ..... Niostual rest
Расходные коэффициенты: Метанова фракци на 1000 нмExpense coefficients: Methane fraction per 1000 nm
хвостовых нитрозных газов . 24,2 нжз Катализатор при скорости подачи хвостовых нитрозиых газов 1000 в год . . . 198 кгtail nitrous gases. 24.2 nzhz The catalyst at a feed rate of tail nitrosia gases 1000 per year. . . 198 kg
Предмет изобретени Subject invention
Способ очистки хвостовых нитрозных газов производства слабой азотной кислоты от окислов азота восстановлением окислов азота на катализаторе газами-восстановител ми, ог-:личающийс тем, что, с целью повышени степени очистки выхлопных газов от окислов азота, в качестве катализатора примеи ют окись алюмини на каолине.The method of purification of tail nitrous gases of the production of weak nitric acid from nitrogen oxides by reducing the nitrogen oxides on the catalyst with reducing gases, is characterized in that, in order to increase the degree of purification of exhaust gases from nitrogen oxides, aluminum oxide on kaolin is used as a catalyst .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU866606A SU184261A1 (en) | 1963-11-20 | 1963-11-20 | R.A.N.P. Konkov, L.M. Polkova and E.P. Vershig "nal" p; -; 'e-aJBHSKlvfictfA;.' BPB-SOT ^^ pd |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU866606A SU184261A1 (en) | 1963-11-20 | 1963-11-20 | R.A.N.P. Konkov, L.M. Polkova and E.P. Vershig "nal" p; -; 'e-aJBHSKlvfictfA;.' BPB-SOT ^^ pd |
Publications (1)
Publication Number | Publication Date |
---|---|
SU184261A1 true SU184261A1 (en) | 1966-07-21 |
Family
ID=45440669
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU866606A SU184261A1 (en) | 1963-11-20 | 1963-11-20 | R.A.N.P. Konkov, L.M. Polkova and E.P. Vershig "nal" p; -; 'e-aJBHSKlvfictfA;.' BPB-SOT ^^ pd |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU184261A1 (en) |
-
1963
- 1963-11-20 SU SU866606A patent/SU184261A1/en active
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