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 ^^ pd

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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
Application number
SU866606A
Other languages
Russian (ru)
Original Assignee
Б. М. Фарбер, П. Пословска А. Д. Марков,
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 Б. М. Фарбер, П. Пословска А. Д. Марков, filed Critical Б. М. Фарбер, П. Пословска А. Д. Марков,
Priority to SU866606A priority Critical patent/SU184261A1/en
Application granted granted Critical
Publication of SU184261A1 publication Critical patent/SU184261A1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/8621Removing nitrogen compounds
    • B01D53/8625Nitrogen oxides

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  • 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 .

SU866606A 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 SU184261A1 (en)

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)

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