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Vacuum type multiple-effect membrane distillation system

A multi-effect membrane distillation and vacuum technology, which is applied in the field of membrane distillation, can solve the problems of low heat utilization rate, complex process and high energy consumption in the membrane distillation process, so as to reduce energy consumption, overcome low heat utilization rate, and reduce temperature rise The effect of energy consumption

Pending Publication Date: 2018-07-06
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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Problems solved by technology

[0006] The purpose of the present invention is to provide a vacuum multi-effect membrane distillation system to solve the problems of low heat utilization rate, complicated process and large energy consumption in the membrane distillation process in the prior art

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  • Vacuum type multiple-effect membrane distillation system

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Embodiment Construction

[0024] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

[0026] Such as figure ...

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Abstract

The invention relates to the technical field of membrane distillation and discloses a vacuum type multiple-effect membrane distillation system. The vacuum multiple-effect membrane distillation systemcomprises a steam compressor, a second heat exchanger and a plurality of membrane distillation assemblies, wherein each membrane distillation assembly comprises a first heat exchanger and a membrane distiller, a fourth outlet of the membrane distiller is connected with a corresponding second inlet of the first heat exchanger, a first inlet of the first heat exchanger is connected with a first outlet of the former first heat exchanger, and a third inlet of the membrane distiller is connected with a third outlet of the later membrane distiller; the second heat exchanger comprises a fifth inlet,a fifth outlet, a sixth inlet and a sixth outlet, the second outlet is connected with the fifth inlet through the steam compressor, the sixth inlet is connected with a first outlet of the first heat exchanger at the tail end, and the sixth outlet is connected with a third inlet of the membrane distiller at the tail end. The vacuum type multiple-effect membrane distillation system disclosed by theinvention overcomes the problems that a traditional membrane distillation process has a low heat utilization rate, a complex distillation work procedure, larger energy consumption and the like; by means of gradient utilization of energy, energy consumption of a distillation work procedure is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of membrane distillation, in particular to a vacuum multi-effect membrane distillation system. Background technique [0002] The research and application of membrane distillation (MD) technology began in the 1960s. It was not until the early 1980s that with the rapid development of polymer materials and membrane preparation technology, membrane distillation showed its practical potential. According to the different condensation methods on the membrane permeation side, membrane distillation can be divided into four forms: direct contact membrane distillation (DCMD), vacuum membrane distillation (VMD), air gap membrane distillation (AGMD) and air swept membrane distillation (SGMD). . Now it has gradually expanded from seawater and brackish water desalination and other water purification research to the concentration and recovery of chemical substances and heat-sensitive substances, the removal and recovery of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D61/36B01D61/58
CPCB01D61/364B01D61/366B01D61/58
Inventor 贺明杨俊玲张振涛陈嘉祥杨鲁伟
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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