Built-in anti-adhesion heat exchanger for circulating fluidized bed

Abstract

The invention discloses a built-in anti-adhesion heat exchanger for a circulating fluidized bed. The built-in anti-adhesion heat exchanger for the circulating fluidized bed comprises a heat exchanger tube plate. The inner portion of the heat exchanger tube plate is composed of heat exchange tubes. The top of the heat exchanger tube plate is provided with a hoisting frame. The upper side and the lower side of the heat exchanger tube plate are provided with longitudinal supporting tubes. The front side and the back side of the heat exchanger tube plate are provided with vertical supporting tubes. The right side of the heat exchanger tube plate is provided with a fixing plate. The right end of the heat exchanger tube plate is fixedly connected with a heat exchanger header. A heating medium inlet is formed in the middle of the right end of the heat exchanger header. A heating medium outlet is formed in the lower side of the right end of the heat exchanger header. A heated medium outlet is formed in the front side of the heat exchanger tube plate. The back portion of the heat exchanger tube plate is provided with a heated medium inlet. One end of each longitudinal supporting tube is provided with a flushing or blowing material inlet. The built-in anti-adhesion heat exchanger for the circulating fluidized bed has the advantages that the structural design is reasonable, and a pipeline is not prone to blockage. Besides, the built-in anti-adhesion heat exchanger for the circulating fluidized bed is convenient to clean and can be generally and widely applied and popularized.

Description

technical field [0001] The invention belongs to the technical field of heat exchangers, in particular to a built-in anti-adhesion heat exchanger for a circulating fluidized bed. Background technique [0002] In order to facilitate safe long-distance transportation and long-term storage, as well as reduce transportation or storage costs and save resources or process needs, more and more liquid materials need to be concentrated, dried or granulated. At present, filters are mostly used at home and abroad. , filter press, drying equipment, granulation equipment, etc. In recent years, many industrial processes at home and abroad have used circulating fluidized beds as the main equipment for concentration, drying or granulation, but they are mainly carried out by heating. Drying, circulating fluidized bed is to add the gas-solid (or liquid-solid, or gas-liquid-solid three-phase) material to be dried into the fluidized bed through the feeder. In the fluidized bed, the particles are...

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Problems solved by technology

[0002] In order to facilitate safe long-distance transportation and long-term storage, as well as reduce transportation or storage costs and save resources or process needs, more and more liquid materials need to be concentrated, dried or granulated. At present, filters are mostly used at home and abroad. , filter press, drying equipment, granulation equipment, etc. In recent years, many industrial processes at home and abroad have used circulating fluidized beds as the main equipment for concentration, drying or granulation, but they are mainly carried out by heating. Drying, circulating fluidized bed is to add the gas-solid (or liquid-solid, or gas-liquid-solid three-phase) material to be dried into the fluidized bed through the feeder. In the fluidized bed, the particles are dispersed in the hot air flow driven and heated In the process, the dried or granulated material is discharged from the discharge port, and the undried tiny particles enter the next heating and exothermic cycle with the airflow after the heat is released, and the undried material is further dried, and the remaining heat and residual material It is recycled, and the heated material is directly transferred to the heat exchange equipment. Its thermal efficiency and utilization rate are much higher than the traditional method. However, due to the structure of the heating equipment, the heat exchange tube is a round tube with a large heat exchange area. The flow area is also large and the resistance is large. The frame is all flat steel plates, and the facing surface is flat. There are heated materials bonded to the frame of the heat exchange equipment and the heat exchange tubes, which will block the flow channel, cannot be cleaned during operation, and affect the exchange rate. defects such as heat

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