A solid particle cooler

Abstract

The invention proposes a solid particle cooler, which is characterized in that water or heat-taking medium enters the main unit, steam-water or heated medium flows out from the unit, heat-taking unit, water or heat-taking medium secondary enters the unit, steam-water or heated medium It is composed of auxiliary medium outflow unit, water or heat-taking medium inlet pipe, steam-water or heated medium heat exchange sleeve, etc. Partitions are respectively set inside the water or heat-taking medium main inlet unit and steam-water or heated medium main outflow unit, and are separated from the outside There is a one-to-one correspondence between the inlet of water or heat-taking medium and the outlet of steam-water or heated medium. A catalyst inlet, fluidization gas inlet and distributor are set in the heat-taking unit, and a replacement unit for catalyst-carrying gas can be set under the heat exchange tube. ; Water or heating medium auxiliary entry unit and steam water or heated medium auxiliary outflow unit can be used as a separate partition or divided into several small areas by partitions. In order to solve the problems that the heat exchange tube bundle of the existing solid particle cooler is inconvenient to repair and replace, the use of pipelines and valves is large, and the operability is not strong.

Description

technical field [0001] The invention relates to a solid particle cooler in the technical field of heat exchange, in particular to a heat extraction or solid particle cooler suitable for 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 solid particle cooler is usually used to absorb this part of excess heat to ensure the smooth operation of the process. At the same time, the solid particle cooler 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. Solid particle coolers are widely used in industry due to their large heat gain and easy operation. [0003] There are many types of existing solid particle coolers....

AI Technical Summary

Problems solved by technology

[0004] In order to simplify the system pipeline and reduce investment, the existing technology often designs the heat exchange tube as a tube sheet structure commonly used in heat exchangers. At this time, only one pipeline is needed between the solid particle cooler and the water vapor separator. However, due to the heat transfer intensity of solid particles High, 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

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