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Method for intensifying heat transformation in high-temperature heat transmission or high-temperature reaction process

A technology for high temperature reaction and heat transfer enhancement, applied in heat transfer modification, heat exchange equipment, lighting and heating equipment, etc., to achieve the effect of improving thermal efficiency, improving temperature distribution, and enhancing the effect of fluid heat transfer

Inactive Publication Date: 2007-10-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For high-temperature heat transfer or high-temperature reaction processes, gaseous substances are in a high-temperature environment (780-920°C), and it takes a short time (0.01-0.7s) to meet the conditions required for the reaction. The above methods of enhancing heat transfer exist. adaptive problem

Method used

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  • Method for intensifying heat transformation in high-temperature heat transmission or high-temperature reaction process
  • Method for intensifying heat transformation in high-temperature heat transmission or high-temperature reaction process
  • Method for intensifying heat transformation in high-temperature heat transmission or high-temperature reaction process

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Experimental program
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Effect test

Embodiment 1

[0023] A honeycomb porous cordierite ceramic inner member is inserted into the furnace tube of the pyrolysis reaction radiant section, and the structure of the inner member is shown in FIG. 1 . Naphtha is used as the raw material for cracking, and the cracking test is carried out on the micro-reactor test device for simulated cracking evaluation. The test device is composed of three parts: feed system, cracking reaction system and cryogenic separation system. The whole set of devices is controlled by a computer and operated Monitor operation. Cracking operating conditions are shown in Table 1.

[0024] Under the cracking evaluation test condition of table 1, use thermocouple to measure the outlet temperature of reactant flow at the furnace tube outlet of cracking reaction radiant section; measure the cracking conversion rate of raw material by cryogenic separation and gas chromatography of cracked gas analysis, etc. The results are shown in Table 2.

Embodiment 2

[0026] A cross-shaped inner member of quartz material is inserted into the furnace tube of the pyrolysis reaction radiant section, and the structure of the inner member is shown in FIG. 2 . The test device and cracking operating conditions are the same as in Example 1. The results of the cracking evaluation test are shown in Table 2.

Embodiment 3

[0031] A honeycomb porous cordierite ceramic inner member is inserted into the furnace tube of the pyrolysis reaction radiant section, and the structure of the inner member is shown in FIG. 1 . Using nitrogen as a raw material, a high temperature heat transfer test was carried out on a high temperature heating furnace. See Table 3 for operating conditions.

[0032] Under the test conditions in Table 3, use thermocouples to measure the radial temperature distribution and outlet temperature of the reactant flow inside the heating furnace tube and at the outlet of the tube, and the results are shown in Table 4 and Figure 3.

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Abstract

The invention relates to an intensified heat transmitting method in the high temperature heat transmitting or high temperature reaction process, a high temperature heat transmitting device or a high temperature reaction device is inserted with an inner component material with a same or a comparative diameter with the inner diameter of the pipe. The method could effectively improve the temperature distribution inside the high temperature heat transmitting device or the high temperature reaction device, to intensify liquid body heat transmitting effect and to improve heat efficiency.

Description

technical field [0001] The invention relates to the field of heat exchange in high temperature reaction or heat transfer process, more specifically, it belongs to a method for enhancing heat transfer and saving energy. Background technique [0002] Heat transfer enhancement technology has been widely used in various fields of processes due to its ability to increase heat transfer rate and save energy. It is usually divided into active heat transfer enhancement and passive heat transfer enhancement technology. Since the latter does not require energy input from the outside, it is easier to be adopted in actual engineering. [0003] In the process of high-temperature heat transfer or high-temperature reaction, the heat generated by the combustion of fuel is transferred to the outer wall of the furnace tube by radiation, and then conducted to the material in the tube by the outer wall of the furnace tube, so that the material in the tube reaches the temp...

Claims

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Application Information

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IPC IPC(8): F28F13/02
Inventor 崔德春贺振富王子军包晓东邵潜李阳
Owner CHINA PETROLEUM & CHEM CORP
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