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Oxygen feeding device, and corresponding methane tri-reforming reaction device and method

A reforming reaction and feeding device technology, applied in feeding devices, chemical instruments and methods, hydrogen/synthesis gas production, etc., can solve the problems of small ratio, too fast temperature rise of catalyst bed, large amount of catalyst, etc., to achieve Solve the effects of rapid temperature rise, not easy to crush, and eliminate carbon deposits

Active Publication Date: 2015-04-22
SHENWU TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The present invention aims to overcome the excessively fast temperature rise of the catalyst bed and the large amount of catalyst used in the existing triple reforming technology of methane, and the CO, H in the main components of the prepared synthesis gas. 2 The proportion of small defects, an oxygen feed device and the corresponding device and method for preparing synthesis gas by triple reforming of methane are provided

Method used

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  • Oxygen feeding device, and corresponding methane tri-reforming reaction device and method
  • Oxygen feeding device, and corresponding methane tri-reforming reaction device and method

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Embodiment 1

[0043] According to the present invention, a device for preparing synthesis gas by methane triple reforming using subsonic oxygen comprises a fixed bed shell 1, an oxygen feed device 3, a catalyst bed 4, a mixed gas inlet 2 and a synthesis gas outlet 5, wherein the The mixed gas inlet 2 is set on one side of the fixed bed shell 1, the synthesis gas outlet 5 is set on the other side of the fixed bed shell 1, and the catalyst bed 4 is set in the middle of the fixed bed shell 1 , the oxygen feeding device 3 is arranged on the fixed bed shell 1 at a position close to the catalyst bed 4 .

[0044] Preferably, the oxygen feeding device 3 adopts a special structure, and the whole oxygen feeding device includes a conical core with a hemispherical bottom and an outer tube, and the two ends of the outer tube are two tubes with different diameters , the middle part of the outer tube is a conical tube connecting the two ends of the tube, the conical core is fixed in the outer tube, includ...

Embodiment 2

[0052] Preferably, the reaction bed layer used in the above-mentioned triple methane reforming reaction device is a fixed bed shell 1 . The design dimensions of the oxygen feeding device 3 are as follows: the ratio of the spherical bottom diameter of the conical core to the inner diameter of the tube in the compression zone is 0.8:1; the apex angle of the cone body is 50°; the angle between the conical tube and the straight pipe is 135°; The ratio of the inner diameter of the pipeline in the working area to the inner diameter of the pipeline in the compression area is: 1:3; the ratio of the length of the working area to the inner diameter of the working area is: 8:1; the angle between the oxygen outlet end and the catalyst bed is 60o; the distance between the oxygen outlet end and the catalyst bed is 80mm.

[0053] Utilize above-mentioned reaction device, according to a kind of method that utilizes the methane triple reforming of subsonic speed oxygen of the present invention ...

Embodiment 3

[0064] Preferably, the reaction bed used in the above-mentioned triple methane reforming reaction device is a fixed bed shell 1 . The design dimensions of the oxygen feeding device 3 are as follows: the ratio of the spherical bottom diameter of the conical core to the inner diameter of the tube in the compression zone is 0.8:1; the apex angle of the conical body is: 50 o ; The angle between the tapered pipe and the straight pipe is: 135 o ;The inner diameter ratio of the pipeline in the working area and the inner diameter of the pipeline in the compression area is: 1:3; the ratio of the length of the working area to the inner diameter of the working area is: 8:1; the angle between the oxygen outlet end and the catalyst bed is 60° o ; The distance between the oxygen outlet port and the catalyst bed is 80mm. The difference from the second embodiment is that the feeding method of oxygen is continuous air intake.

[0065] Utilize above-mentioned reaction device, according to ano...

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Abstract

The invention relates to the technical field of methane tri-reforming, in particular to an oxygen feeding device, and corresponding methane tri-reforming device and method for preparing a synthetic gas. The oxygen feeding device comprises a conical core and an outer pipe, wherein the conical core is provided with a hemispherical bottom; two straight pipes which are different in diameters are arranged at two ends of the outer pipe; a conical pipe which is connected with the straight pipes at two ends is arranged on the middle part of the outer pipe; the conical core is fixed in the outer pipe and comprises a conical hemispherical bottom and a conical body; and at least part of the conical body is arranged in the conical pipe. According to the oxygen feeding device, low-temperature high-speed feeding is achieved; the traditional oxygen feeding mode is changed; oxygen can rapidly react with carbon deposit on the surface of the catalyst, so that carbon deposit is removed; and the oxygen is prevented from staying for a long period of time to react with CO and H2 in the synthetic gas.

Description

technical field [0001] The invention relates to the technical field of methane triple reforming, in particular to an oxygen feeding device and a corresponding device and method for preparing synthesis gas by methane triple reforming. technical background [0002] With the continuous development of the natural gas industry, the consumption of natural gas is increasing year by year. Research on the production of synthetic gas by reforming natural gas has also been gradually deepened. At present, the technologies for reforming natural gas to synthesis gas mainly include steam reforming of methane, carbon dioxide reforming of methane, and carbon dioxide and steam reforming of methane. [0003] CH in coke oven gas 4 , CO, H 2 and CO 2 . Using carbon dioxide to reform methane technology can convert CH 4 and CO 2 Further conversion to syngas CO and H 2 . So as to further increase the effective components in the syngas and reduce the CH in the syngas 4 and CO 2 content, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J4/00B01J8/02C01B3/38
CPCB01J4/001B01J8/02B01J2204/002C01B3/38C01B2203/0227C01B2203/1011C01B2203/1058C01B2203/1082C01B2203/1241
Inventor 吴道洪闫琛洋史雪君
Owner SHENWU TECH GRP CO LTD
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