Continuous cascade film evaporator system

A thin-film evaporator and secondary steam technology, applied in evaporation, multi-effect evaporation, chemical instruments and methods, etc., can solve the problems of large energy consumption, non-reuse of heat, and low automation level

Pending Publication Date: 2021-05-18
SINOPEC SHANGHAI ENG +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The present invention aims at the problems in the prior art that when multiple thin-film evaporators are used at the same time, the heat is not reused, resulting in large energy consumption and low automation level, and provides a continuous cascaded thin-film evaporator system

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  • Continuous cascade film evaporator system

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Embodiment

[0027] Such as figure 1 As shown, this embodiment provides a continuous cascaded thin film evaporator system, including a feed preheater 4, a first thin film evaporator 6, a second thin film evaporator 13, an exhaust condenser 25, and a material temporary storage tank 19 , condensate temporary storage tank 27 and vacuum pump 29;

[0028] The raw material liquid inlet of the first thin film evaporator 6 is connected with the feed preheater 4 through the feed pipe 1, the bottom feed liquid outlet is connected with the second thin film evaporator 13 through the U-shaped bend feed pipe 8, and the solvent secondary steam outlet The secondary steam pipeline 12 of the first solvent is connected to the heating jacket of the second thin film evaporator 13; the inlet of the heating jacket of the first thin film evaporator 6 is connected to the steam pipeline 3, and the steam pipeline 3 is provided with a first regulating valve 5 ; The outlet of the heating jacket of the first thin film...

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Abstract

The invention discloses a continuous cascade film evaporator system which comprises a feed preheater, a first film evaporator, a second film evaporator, a tail gas condenser, a material temporary storage tank, a condensate temporary storage tank and a vacuum pump. According to the continuous cascade film evaporator system, heat can be fully utilized, and it is guaranteed that energy consumption of the system is reduced; besides, a liquid seal is arranged between the two film evaporators, so that the pressure difference between the two film evaporators is ensured, the process system is ensured to be stable by using one vacuum pump, and the system investment is reduced; meanwhile, full-automatic operation ensures the stability and efficiency of the process. According to the continuous cascade film evaporator system, the solvent recovery efficiency in the pharmaceutical chemical industry is improved, and the energy consumption and the fixed investment of solvent recovery are reduced.

Description

technical field [0001] The invention relates to the technical field of thin film evaporation, in particular to a continuous series thin film evaporator system. Background technique [0002] In recent years, with the gradual consumption of energy, people's requirements for energy saving and emission reduction in factories are also increasing day by day. At present, the solvent recovery in the pharmaceutical and chemical industry mainly uses the following equipment: stills, thin film evaporators and rectification towers. Especially for stills and thin-film evaporators, since the current research is mainly focused on the optimization of single equipment, there is no optimal design for the entire solvent recovery system, so that a lot of energy will be wasted by using these two solvent recovery methods, and Most of them are manual intermittent operations, the workload of personnel is heavy, and the probability of misoperation is high. Therefore, in pharmaceutical and chemical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D1/26B01D1/22
CPCB01D1/26B01D1/22
Inventor 刘一鸣洪霞
Owner SINOPEC SHANGHAI ENG
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