an external heat extractor
A technology of external heat extractor and heat medium extraction, which is applied in the types of heat exchangers, heat exchanger shells, indirect heat exchangers, etc., and can solve the problems of high heat exchange intensity of solid particles, inability to use equipment, and catalyst wear. , to achieve the effect of saving space layout, reducing heat loss and reducing steel waste
Active Publication Date: 2017-11-03
QINGDAO JINGRUN PETROCHEM ENG
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Problems solved by technology
However, due to the high heat transfer intensity of solid particles, uneven temperature, catalyst wear, etc., the heat exchange tube is the most prone to damage during the heat exchange process.
When there is a problem with any one of the water inlet pipe and the steam-water mixture casing, the conventional tube-sheet structure will cause the entire equipment to fail to be put into use
Method used
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[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments to help readers understand the characteristics and essence of the present invention, but the accompanying drawings and specific embodiments do not limit the scope of the present invention.
[0032] like figure 1 Shown, a kind of invention external heat extractor, it comprises heat extraction unit 3, and this unit is provided with the fluidization gas inlet port 34 and the lower shell 31, catalyst inlet port 32, lower seal head 33 and lower housing 31 bottoms and Distributor 35 is composed of steam-water or heat-taking medium heat exchange sleeve 7 and fixed guide frame 8 arranged inside; it also includes steam-water or heat-taking medium outflow unit 2 located on the upper part of heat-taking unit 3, which is composed of upper shell 21 And the outlet 22 for steam water or heat-taking medium provided on the upper shell 21, the water or h...
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The invention proposes an external heat extractor, which is characterized in that water or heat extracting medium enters the unit, steam water or heat extracting medium flows out of the unit, heat extracting unit, tube plate, water or heat extracting medium enters the tube and steam water or heat extracting Composed of medium heat exchange sleeves, etc., partitions are respectively set inside the water or heat extraction medium inlet unit and the steam water or heat extraction medium outflow unit, corresponding to the external water or heat extraction medium inlet, steam water or heat extraction medium outlet. The heat extraction unit is provided with a catalyst inlet, a fluidization gas inlet, a distributor, etc.; a catalyst-carrying gas replacement unit can be installed under the heat exchange tube; to solve the problem that the heat exchange tube bundle of the existing external heat extractor is not easy to maintain and replace, and the pipeline And problems such as large amount of valve usage and poor operability.
Description
technical field [0001] The invention relates to an external heat extractor in the technical field of heat exchange, which is suitable for solid particle cooling and heat exchange, and is particularly suitable for an external heat extractor for removing excess heat of a gas-solid fluidized bed during a gas-solid fluidized bed reaction process. Background technique [0002] During exothermic reaction processes such as catalytic cracking regeneration, fluidized bed methanol to olefins, and fluidized bed methanol to aromatics, it is necessary to take out part of the heat or cool solid particles such as catalysts to obtain heat. A heat collector is usually used to absorb this part of the heat to ensure the smooth progress of the process operation. At the same time, the heat receiver also uses this part of excess heat to generate steam or heat other media, which has become an important energy-saving measure in the device. The external heat extractor is widely used in industry due...
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IPC IPC(8): F28D7/10F28F9/06
Inventor 石宝珍郭俊辉孙弘
Owner QINGDAO JINGRUN PETROCHEM ENG