A series-parallel integrated multi-effect evaporator

Abstract

The invention discloses a series-parallel integrated multi-effect evaporator, which includes an evaporator body, which is characterized in that: the evaporator body includes a shell, a feeding chamber, a liquid accumulation cylinder and a heater, and the shell is equipped with a main The heating chamber and the main vapor-liquid separation chamber, the several main heating chambers are connected in series through the corresponding main vapor-liquid separation chamber, the main heating chamber includes several auxiliary heating chambers, and the several auxiliary heating chambers The main vapor-liquid separation chambers include several secondary vapor-liquid separation chambers, and the secondary vapor-liquid separation chambers are connected to each other. In the present invention, the auxiliary heating chambers in the same main steam chamber are connected in parallel, and at the same time, different main heating chambers are connected in series to achieve a series-parallel integrated multi-effect evaporator, which makes the present invention better suppress foam The gas-liquid separation is more sufficient, the heating area is more matched, the evaporation is more stable, the performance matching is more balanced, the amount of paste collection is minimized, and the equipment occupies an area.

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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