Heat exchange assembly and fluidized bed reactor comprising same

Abstract

The invention relates to a heat exchange assembly and a fluidized bed reactor comprising the same. The heat exchange assembly comprises a barrel and a plurality of heat exchange units distributed circumferentially; the multiple heat exchange units are arranged in the barrel; each heat exchange unit comprises a coil unit of which the two ends are connected to a feeding branch pipe and a dischargingbranch pipe correspondingly; the feeding branch pipes are connected with a feeding header pipe through a feeding channel; the discharging branch pipes are connected with a discharging header pipe through a discharging channel; each feeding branch pipe and the corresponding discharging branch pipe are vertically inclined relative to each other; and the distance between the upper end of each feeding branch pipe and the upper end of the corresponding discharging branch pipe is shorter than the distance between the lower end of the feeding branch pipe and the lower end of the corresponding discharging branch pipe. The heat exchange assembly and the fluidized bed reactor comprising the same have the technical advantages of being convenient to mount and maintain, low in internal thermal stressand flow resistance, uniform in heat exchange, not liable to be blocked during stopping and the like.

Description

technical field [0001] The invention relates to a heat exchange component and a fluidized bed reactor comprising the same, belonging to the technical field of heat exchange. Background technique [0002] A heat exchanger is an energy-saving device that realizes heat transfer between materials between two or more fluids at different temperatures. It transfers heat from a fluid with a higher temperature to a fluid with a lower temperature, so that the temperature of the fluid reaches the index specified in the process. , to meet the needs of process conditions, but also one of the main equipment to improve energy utilization. The heat exchanger industry involves nearly 30 industries such as HVAC, pressure vessels, reclaimed water treatment equipment, chemical industry, and petroleum. [0003] Fluidized bed reactor refers to the solid particle material in the state of suspension movement in the equipment under the action of air flow. The solid particle layer in the fluidized ...

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Problems solved by technology

In addition, the processing and installation of the annular pipe have very high requirements for precision, are difficult, and are very inconvenient; Proximity, very inconvenient for repair and maintenance

[0006] (2) The surface of the discharge channel and the feed channel are evenly distributed, but it does not take into account that the temperature near the inlet of the heat exchange molten salt is higher, while the temperature far away from the heat exchange molten salt inlet is lower, so in fact Does not bring uniform heat transfer effect

For the same reason as above, this setting is only to achieve uniformity on the surface. In fact, it does not take into account that when the feed branch pipe enters the heat exchange molten salt at the lower end, the temperature is higher, and the discharge branch pipe discharges the heat exchange molten salt at the upper end. The temperature is low, so the effect of uniform heat transfer is not really realized, and thermal stress concentration will be formed on the feed branch pipe and the discharge branch pipe. leak

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