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Device for cracking tar and method for cracking tar

A tar cracking and tar technology, which is applied in the multi-stage series cracking process treatment, petroleum industry, hydrocarbon oil treatment, etc. The effect of tar cracking efficiency, avoiding pipeline blockage and improving work efficiency

Active Publication Date: 2017-07-11
SHENWU TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Most of the current thermal cracking or catalytic cracking decoking devices have a low degree of tar cracking, high tar content in the cracked products, and pipeline blockage due to cooling and condensation of tar during the cracking process, and catalyst deactivation due to carbon deposition. And it is difficult to replace and other problems, so it seriously affects the efficiency of tar cracking

Method used

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  • Device for cracking tar and method for cracking tar
  • Device for cracking tar and method for cracking tar
  • Device for cracking tar and method for cracking tar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0101] Tar-containing gas (tar content 550mg / Nm 3 ) enters the tar catalytic cracking device through the crude gas inlet 300, steam enters through the steam inlet 400, and the tar-containing gas and steam are mixed by the air distribution plate 600 and then uniformly enter the catalytic unit; the tar-containing gas passes through the thermal cracking chamber at 900 degrees Celsius and the 850 Celsius catalytic cracking chamber to achieve alternate cracking.

[0102] Among them, the catalyst is a spherical catalyst with a particle size of 2 mm, and the main component is Ni / Al 2 o 3 (Ni loading is 7.5 quality %), and catalyst layer pore diameter is 1mm; Through the cleavage product of alternate cracking (tar content 8mg / Nm 3 ) is discharged from the pyrolysis product outlet 500; the catalyst 210 in the catalytic cracking chamber 200 is sent into the catalyst activation pipeline 2000 via the catalyst transport assembly 2300, and the flue gas (1100°C) is blown into the catalyst ...

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Abstract

The invention provides a tar cracking device and method. The device comprises a cracker, radiant tubes, catalysts, catalyst feeding openings, catalyst discharging openings and catalyst activation pipelines, wherein the cracker is partitioned into thermal cracking chambers and catalytic cracking chambers by partition plates, and the partition plates are provided with through holes; the radiant tubes are arranged in the thermal cracking chambers; the catalysts are arranged in the catalytic cracking chambers; the catalyst feeding openings are formed in the tops of the catalytic cracking chambers; the catalyst discharging openings are formed in the bottoms of the catalytic cracking chambers; the catalyst activated pipelines are connected with the catalyst feeding openings and the catalyst discharging openings respectively. By means of the tar cracking device and method, tar cracking efficiency of the device is improved.

Description

technical field [0001] The invention relates to a device for cracking tar and a method for cracking tar. Background technique [0002] Tar is an important chemical product with complex components, mainly composed of polycyclic aromatic hydrocarbons such as naphthalene, anthracene, and phenanthrene. Tar is mainly derived from the decomposition of organic matter in the process of pyrolysis and gasification. Untreated tar is difficult to burn completely, and it is easy to produce carbon black particles, which will seriously damage gas equipment. In addition, tar is easy to condense into a viscous liquid below 300 degrees Celsius, which is easy to burn with Mixing water and fly ash can block pipes, valves and other equipment. Therefore, the separation and purification of tar has an important position in the chemical industry. [0003] At present, there are two main technologies for removing tar produced during the decomposition of organic matter: cold decoking and thermal deco...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G51/04
CPCC10G51/04C10G2300/703
Inventor 赵延兵陈水渺姜朝兴任守强马正民孙祖平薛逊吴道洪
Owner SHENWU TECH GRP CO LTD
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