• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A continuous process for the partial oxidation of methane to produce mixtures of formaldehyde and methanol wherein methane and an oxidizing gas are reacted in a reaction zone in the form of a flame and the resulting reaction mixture is cooled followed by separation of the resulting products, is further improved by controlling the velocity of the oxidizing gas so that it is 50 to 300 meters per second higher than the methane gas with the methane gas being introduced in a velocity of from 1 to 15 meters per second. Also, the stream of methane gas has a volume that is 3 to 100 times greater than the volume of the stream of oxidizing gas introduced into the reaction zone.
    公开号:SU847913A3
    申请号:SU782663453
    申请日:1978-09-19
    公开日:1981-07-15
    发明作者:Брокхауз Рудольф；Франке Ганс-Юрген
    申请人:Хемише Верке Хюльс Аг (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to a method for producing formaldehyde and methanol by partial oxidation of methane. ' A method of producing methanol and formaldehyde by partial oxidation of methane or a mixture of nitrogen with air at 300-600 ° C and 5-200 bar, in the apparatus, represent 0 present a reaction tube, followed by cooling the reaction mixture and separation of the desired products. The speed of methane or its mixture with nitrogen in the cylindrical part of the reaction tube is 1-15 M s 1 . Air velocity does not exceed 30 ms · 1 velocity of 1 methane or its mixture with nitrogen fl].
    The disadvantage of this method is the low yield of formaldehyde and methanol (8-10.7%) in terms of the reacted methane. 2
    The purpose of the invention is to increase the yield of formaldehyde and methanol.
    This goal is achieved by the fact that formaldehyde and methanol are obtained by partial.-Oxidation with air of methane 2 or its mixture with nitrogen at 300-600 ° C and 5-200 bar in the apparatus, which is a reaction tube, by cooling the reaction mixture and separating the target products 3 at a speed of methane or its mixture with nitrogen in the cylindrical part of the reaction tube 1-15 ms-1 ( and a distinctive feature is that air is supplied at a speed exceeding 50-300 ms-<the speed of methane or its mixture with nitrogen. ·
    The drawing shows a diagram of the reaction tube.
    Examples 1-20. Methane or its mixture with nitrogen under the conditions indicated in the table is subjected to partial oxidation with air. After passing through the reaction tube, the reaction product is cooled by cooling in a heat exchanger. The conversion and yield of the target products is determined by analysis of condensed liquid products and exhaust gases. The inner diameter of the reaction 1 and serving to supply air to the inner 2 pipes is shown in the table. The distance from the air stream inlet to the methane gas stream to the gas stream inlet to the heat exchanger is 120 cm. The reaction tube is cooled with air. The results of the experiments are summarized in table.
    The method allows to significantly increase the yield of target products.
    Example,No. The size of the reaction. torus ,, mm Pressure bar Temperature in the reactor, ° C The amount of source gases, HNf * The ratio of methane gas to air Speed, V M> C · ' Conversion sn L ,% The output, in terms of proreagi Georgiaclear methane% sn 4 gas Air & V CH ^ N 2 AIR CH ^ OH HCNO + + CH ' 3 OH 1 2 1 53 3,5 40 435 192 - 28 6.9 1,5 51.5 fifty 2.15 10.9 27.3 38,2 2 53 4 40 473 192 - 52 3,7 1,6 76 74,4 4 10.65 25.5 6 36.2 3 53 2,5 40 477 192 - 40 4.8 1,6 150 148.4 4 16.32. 55.49 71.8 4 53 2,3 40 479 192 - 44 4.4 1,6 196 194.4 4.2 18.05 52.3 70,4 5 53 2,3 40 482 192 - 60 3.2 1,6 268 266/4 4.3 14.35 41.9 7 56.3 6 53 2 40 488 192 - fifty 3.8 1,6 297 295.4 4.2 10.18 18.32 28.5 7 53 2 40 495 192 - 51 3.8 1,6 302 301.6 3.96 9.3 9.1 18,4 8 53 2,3 40 489 192 - 69 2,8 1,6 302 301.6 3.92 9.14 7.1 6 16.3 9 53 1.25 40 484 118 - fifteen 7.9 1 227 226 3.04 16 54,2 70,2 10 20 2 40 467 258 - 40 6.5 fifteen 231 216 2.46 34.1 46.2 80.3 eleven 53 2,5 40 476 192 - 40 4.8 1,6 150 148.4 4 18.89 52.8 9 71.8 12 53 3 ’ 4.0 481 192 - fifty 3.4 1,6 147 145/4 5,6 19.48 44.8 64.3 thirteen 53 2,5 40 486 100 100 40 5 1.7 152 150.3 6.1 13.29 27.9 1 41,2 14 53 1.7 40 536 40 16 0 18 11.1 1.8 158 156.2 5.9 16.67 18.34 35 fifteen 53 2 40 541 40 160 36 5,6 1.8 229 22 7.2 9.8 17.05 15.3 5 32,4 16 53 2,3 40 542 60 24 0 40 7.5 2.7 193 190.3 8.9 16.41 19.68 36.1 17 53 1,5 .80 480 60 240 37 8.1 1.3 194 192.7 9.1 13.71 28.7 9 42.5 18 53 4 5 600 110 - 19 5.8 8.5 259 250,5 1.47 17.5 2.9 20,4 19 20 1 200 300 60 240 42 7.1 3.15168 164.8 7.64 4.16 63.6 4 67.8 20 20 0.85 198 398 60 24 0 42 7.1 3,1 244 24Ts9 9.85 4.4 67.3 71.7
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    The method of producing formaldehyde and methanol by partial oxidation of methane with air or its mixture with nitrogen at 300-600 ° C and 5-200 bar in the apparatus, which is a reaction tube, cooling the reaction mixture and separating the target products, at a rate of methane or its mixture with with nitrogen in the cylindrical part of the reaction tube of 1-15 m-s, characterized in that, in order to increase the yield of the target products, air is supplied at a rate
    exceeding by 50-300 the rate of methane or its mixture with nitrogen.
    Sources of information taken into account in the examination
    . 1, Patent of FRG 2201429, cl. C 07 C 47/04, published 1976
    (prototype).
    Air
    CH U / 7U CH i- nitrogen
    0Xfla dtMt / t
     Jk
    IT
    类似技术:
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    US1134583A|1915-04-06|Process and apparatus for producing chemical action in gases.
    SU331648A1|1979-02-15|Hydrogen production method
    US3917712A|1975-11-04|Process for producing methacrolein
    SU588182A1|1978-01-15|Method of preparing hydroxylamindisulfonate solutions
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    SU566761A1|1977-07-30|Method of carbon oxide conversion
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    SU556133A1|1977-04-30|Method for producing formaldehyde
    US1378271A|1921-05-17|Process for the oxidation of ammonia
    US4067908A|1978-01-10|Process for the production of formaldehyde
    US3341295A|1967-09-12|Thionyltetrafluoride
    同族专利:
    公开号 | 公开日
    NO148710C|1983-11-30|
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    引用文献:
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    FR1411443A|1964-10-13|1965-09-17|Hitachi Ltd|Control device of internal combustion engines for the production of gaseous raw materials|
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    US4618732A|1985-05-20|1986-10-21|Gesser Hyman D|Direct conversion of natural gas to methanol by controlled oxidation|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2743113A|DE2743113C3|1977-09-24|1977-09-24|Process for the production of mixtures of formaldehyde and methanol by partial oxidation of methane|
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