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Seawater desalting system modeling and simulation calculation method adopting rolled type film method

A system modeling, rolled membrane technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as low model accuracy and no consideration of seawater spatial changes.

Inactive Publication Date: 2014-09-17
HANGZHOU DIANZI UNIV
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Problems solved by technology

In the past, although researchers also analyzed the mechanism of the reverse osmosis process in many aspects, they mainly considered the performance of the system under rated conditions; Spatial variation, the accuracy of the model established by the lumped parameter method is not high

Method used

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  • Seawater desalting system modeling and simulation calculation method adopting rolled type film method
  • Seawater desalting system modeling and simulation calculation method adopting rolled type film method
  • Seawater desalting system modeling and simulation calculation method adopting rolled type film method

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Embodiment

[0154] In order to verify the effectiveness of the present invention, an example of a roll-type seawater desalination system is used to prove it. The main process of this seawater desalination system is as follows: figure 1 As shown, the system uses 55 pressure vessels to produce water in parallel, and each pressure vessel has multiple SW30HR-380 membrane elements connected in series. The feed operating conditions of the seawater desalination system are shown in Table 1.

[0155] Table 1. Feed conditions for seawater desalination system

[0156] Feed condition (kg / m3) 30 Feed temperature e(°C) 25 Feed pressure (Bar) 59 Feed pH 5-8 Density ρ(kg / m3) 1000 Kinematic viscosity (kg / m / s) 1.02e-6(at0℃)

[0157] In order to verify the effectiveness of this model, the two main performance indicators calculated by this model are compared with the actual factory operation data and ROSA9.0 calculation data. The calculation of this model adop...

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Abstract

The invention discloses a seawater desalting system modeling and simulation calculation method adopting a rolled type film method. In the past, although researchers analyze a mechanism of a reverse osmosis process in multiple aspects, the performance condition of a system is mainly considered under a rated condition; furthermore, in order to achieve the simplicity and the quickness of system simulation calculation, a space change situation of seawater in a film element channel is generally not considered; the precision of a model constructed by a lumped parameter method is low. The invention provides a rolled type seawater desalting system mechanism model constructed by a differential-algebraic equation, and the accurate and stable model simulation calculation method is realized by a simultaneous calculation technology. The model and the calculation method thereof have the advantages of accurate model forecasting, high parameter change adaptability such as temperature, high calculation stability, high precision and the like.

Description

technical field [0001] The invention belongs to the field of seawater desalination treatment, and in particular relates to a method for modeling and simulating solving of a roll-type seawater desalination system. Background technique [0002] Fresh water is one of the basic materials for the survival and development of human society and the source of all life. With the rapid increase of the world's population and the rapid development of industrialization, the shortage of fresh water resources has become increasingly serious and has become a key factor restricting social development. The first two decades of the 21st century are called the 20 years of freshwater crisis in the 21st century. The use of desalination to obtain fresh water resources has become one of the more and more effective and concerned methods, and has formed a consensus in the global scientific and technological circles, and has become a countermeasure for the governments of coastal countries to advocate ...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 江爱朋王剑程文邢长新
Owner HANGZHOU DIANZI UNIV
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