Sleeve-type heat exchange unit and non-clogging penetration mixed cyclone high-efficiency sleeve-type heat exchanger

Abstract

The invention discloses a tube-in-tube type heat exchange unit and a non-blocking penetrating mixed swirl efficient tube-in-tube type heat exchanger. The tube-in-tube type heat exchange unit comprisesa tube-in-tube inner tube, a tube-in-tube outer tube and obliquely-arranged strengthened pieces. An inner cavity allowing a heat exchange medium to circulate is defined in the tube-in-tube inner tube. Mounting tank holes are formed in the tube-in-tube inner tube. The tube-in-tube inner tube is sleeved with the tube-in-tube outer tube. An outer cavity allowing the other heat exchange medium to circulate is defined between the tube-in-tube outer tube and the tube-in-tube inner tube. The outer cavity is isolated from the inner cavity. The obliquely-arranged strengthened pieces are mounted on themounting tank holes in a matched manner. Parts of the obliquely-arranged strengthened pieces extend into the inner cavity, and the other parts of the obliquely-arranged strengthened pieces extend into the outer cavity and are provided with chamfers and / or circular beads. According to the tube-in-tube type heat exchange unit and the non-blocking penetrating mixed swirl efficient tube-in-tube typeheat exchanger, two kinds of heat exchange fluids in the tube-in-tube type heat exchange unit can generate the non-blocking penetrating mixed swirl, so that the phenomena of deposition, bonding and blocking of the heat exchange fluids are avoided, the mud-mud long-period stable efficient heat exchange is achieved, and the sludge delivery flow resistance and the pumping power dissipation are lowered remarkably, so that the remarkable energy-saving economic benefits and environmental-protection social benefits of sludge disposal can be obtained.

Description

technical field [0001] The invention relates to the technical field of heat exchangers, more specifically to a non-clogging penetrating mixing swirl high-efficiency casing heat exchanger, in particular to a non-clogging penetrating mixing swirling high-efficiency sleeve for mud-mud efficient heat exchange Tube heat exchanger. Background technique [0002] With the continuous advancement of my country's urbanization and the continuous improvement of environmental protection requirements, more and more attention has been paid to the treatment of sewage sludge. In many sludge treatment technologies, it is necessary to heat the wet sludge to a higher temperature, such as a sludge wet oxidation treatment process, the sludge needs to be heated to 150°C-370°C, and the wet sludge is placed in a high-temperature and high-pressure reactor After the medium reaction, the temperature is lowered and the water is filtered. In the process of heating and cooling wet sludge, it is necessary...

AI Technical Summary

Problems solved by technology

In addition, due to the casing structure, the sludge casing heat exchanger occupies a particularly large area, and the construction cost is high. In some cases, it is even impossible to arrange equipment, etc.

[0005] For sludge plate heat exchangers, although wide channel design is generally adopted and the structure is relatively compact, the above-mentioned problems such as sludge deposition, sticking or even clogging and poor heat transfer performance also exist, especially the debris in sludge is very Easy to clog plate heat exchanger

[0006] In summary, due to the high viscosity, easy cohesiveness, easy sedimentation and shear thinning of wet sludge, and the presence of some impurities in the sludge, especially fiber impurities, the existing sludge heat exchanger There are common problems of sludge deviation, deposition, cohesion, clogging, poor heat transfer performance and rapid and obvious decline in heat transfer performance, as well as the problems of large flow resistance of sludge conveying and large pumping power consumption

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