Two-range radiant section boiler tube ethene cracking furnace and application of ethene cracking furnace in chemical field
An ethylene cracking furnace and process radiation technology, which is used in cracking, hydrocarbon cracking to hydrocarbon production, and non-catalytic thermal cracking, etc., can solve the problem of affecting the uniform flow distribution, the decline of key indicators such as the olefin yield of processing capacity, and the increase of cracking furnace pressure, etc. problems, to achieve the effect of improving overall performance, good industrial application prospects, and improving yield
Active Publication Date: 2014-05-14
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
However, the technical solution of adding twisted sheets will increase the pressure of the cracking furnace, affecting the uniform distribution of flow, resulting in a decrease in key indicators such as processing capacity and olefin yield
Method used
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Embodiment 1
[0100] Take an ethylene cracking furnace with an annual output of 100,000 tons as an example. The ethylene cracking furnace is improved according to a preferred embodiment of the present invention. Under the same process conditions, use the ethylene cracking furnace according to the prior art (the heat exchange tube of the radiant section is not provided with twisted sheets) and the ethylene cracking furnace according to the present invention to carry out comparative experiments, and the process data comparison of the experimental results is as shown in Table 1 As can be seen from Table 1, the pressure drop at the outlet of the radiant section decreases after the styrene heating furnace according to the present invention is used, and the pressure drop at the furnace tube of the radiant section decreases.
[0101]
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The invention discloses a two-range radiant section boiler tube ethene cracking furnace, which comprises a radiant section, the radiant section comprises a heat exchange tube (10), wherein, a reinforcement heat transfer element is arranged in the heat exchange tube (10), the reinforcement heat transfer element comprises a distortion sheet, and the distortion sheet comprises apertures. The invention also provides an application of the ethene cracking furnace in a chemical field. According to the technical scheme, the reinforcement heat transfer element is arranged in the heat exchange tube of the radiant section of the two-range radiant section boiler tube ethene cracking furnace, good heat transfer effect is realized, the coking rate of the ethene cracking furnace is reduced, the cleaning period of the furnace tube is prolonged, the decoking operation is convenient, the integral performance of the ethene cracking furnace is increased, pressure drop in the furnace tube is effectively reduced, the products alkene yield is increased, and the two-range radiant section boiler tube ethene cracking furnace has good industrial application and prospect.
Description
technical field [0001] The invention relates to the field of chemical industry, in particular to an ethylene cracking furnace with two-pass radiation section furnace tubes and its application in the field of petrochemical industry. Background technique [0002] Petroleum hydrocarbon cracking to ethylene is a high-temperature and strong endothermic process, so it is not only necessary to heat the reaction material to a relatively high temperature to initiate the cracking reaction, but also to continuously provide sufficient energy to achieve the required conversion during the reaction process Rate. [0003] At present, the industrial production of ethylene mainly adopts the method of pyrolysis of high-temperature steam in a tubular reactor. For cracking furnaces producing ethylene, the structure of radiant furnace tubes is closely related to the selectivity of cracking products, the increase of olefin yield of cracking products and the adaptability to raw materials, and is t...
Claims
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IPC IPC(8): C10G9/20C07C4/04C07C11/04
Inventor 张利军王国清张永刚周先锋刘俊杰杜志国周丛
Owner CHINA PETROLEUM & CHEM CORP
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