Serial/parallel integrated multi-effect evaporator

Abstract

The invention discloses a serial / parallel integrated multi-effect evaporator. The serial / parallel integrated multi-effect evaporator comprises an evaporator body and is characterized in that the evaporator body comprises a shell, a feeding cavity, a liquid collection cylinder and a heater, wherein main heating cavities and main steam-water separation chambers are arranged in the shell; the plurality of main heating cavities are connected in series through the corresponding main steam-water separation chambers; each main heating cavity comprises a plurality of secondary heating cavities; the plurality of secondary heating cavities are communicated; each main steam-water separation chamber comprises a plurality of secondary steam-water separation chambers; the secondary steam-water separation chambers are communicated. According to the serial / parallel integrated multi-effect evaporator disclosed by the invention, the secondary heating cavities in the same main steam chamber are connectedin parallel; meanwhile, the different main heating cavities are connected in series so that the serial / parallel integrated multi-effect evaporator is obtained; the serial / parallel integrated multi-effect evaporator can be used for inhibiting the generation of foams better and steam-water separation is more sufficient; a heating area is matched better and the evaporation is more stable; the performance matching is more balanced and the paste yield is minimized; meanwhile, the land occupation of equipment is minimized.

Description

technical field [0001] The invention relates to the technical field of evaporation and concentration equipment, in particular to a series-parallel integrated multi-effect evaporator. Background technique [0002] At present, in the manufacturing process of products in the chemical, pharmaceutical, paper, and salt industries, processes such as steam concentration, evaporative crystallization, and low-temperature evaporation are required. The concentration and crystallization of the solution are mostly realized by industrial steam. Traditional evaporators such as single-effect or multi-effect evaporators have a series of shortcomings such as low thermal efficiency, high power consumption, high operating costs, and waste of resources. Harmful gases such as carbon dioxide and sulfur dioxide have brought many adverse effects on social economy and human development. [0003] In response to the above problems, the existing technology has also developed an integrated parallel multi...

AI Technical Summary

Problems solved by technology

The concentration and crystallization of the solution are mostly realized by industrial steam. Traditional evaporators such as single-effect or multi-effect evaporators have a series of shortcomings such as low thermal efficiency, high power consumption, high operating costs, and waste of resources. Harmful gases such as carbon dioxide and sulfur dioxide have brought many adverse effects on social economy and human development

[0003] In response to the above problems, the existing technology has also developed an integrated parallel multi-effect MVR evaporator and an integrated series multi-effect MVR evaporator. Although the integrated parallel 3-effect MVR evaporator operates stably in the Roots centrifuge, it cannot There are several obvious defects: 1) It is not suitable for washing and foaming materials; 2) The minimum paste volume and paste loss are still high; 3) When the centrifuge is used as a heat source, there is still a surge; 4) The collection The paste density is low, only 1.2g / mL; while the integrated series multi-effect MVR evaporator has certain advantages in terms of energy saving compared with the parallel connection, but it also has many defects, for example: 1) It is easy to foam and run out when starting up, Poor material adaptability; 2) It is difficult to match the heating area among the various effects, and it is difficult to solve the problems of appearance, area balance, and minimum ointment collection; 3) MVR compressors are difficult to control, and life is difficult to guarantee

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