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Cross flow filtration control method, cross flow filtration device and cross flow filtration system

A technology of cross-flow filtration and control method, which is applied in chemical instruments and methods, semi-permeable membrane separation, membrane technology, etc. It can solve the problems that ceramic membranes cannot be fully reflected, can not be achieved, and the filtration time can be extended, so as to achieve high market promotion value , good equipment value, and the effect of prolonging the cross-flow filtration time

Pending Publication Date: 2018-01-23
NINGBO LEHUI INT ENG EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since the research and development of ceramic membrane filtration technology is still in the initial stage, it cannot achieve the best effect of prolonging the filtration time in process control. When the micropores of the ceramic membrane are blocked to a certain extent, it cannot continue to work. As a result, the advantages of using ceramic membranes for cross-flow filtration cannot be fully reflected

Method used

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  • Cross flow filtration control method, cross flow filtration device and cross flow filtration system
  • Cross flow filtration control method, cross flow filtration device and cross flow filtration system
  • Cross flow filtration control method, cross flow filtration device and cross flow filtration system

Examples

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no. 1 example

[0032] as attached figure 1 As shown in , the first embodiment of the present invention provides a cross-flow filtration control method for controlling a cross-flow filtration device 100. The cross-flow filtration device 100 includes a buffer tank 101, a circulation pump 1 and a filter chamber 2. The filter chamber 2 A cross-flow filter membrane 3 is provided in the center, and the cross-flow filter membrane 3 isolates the filter cavity 2 into an inner cavity 21 and an outer cavity 22, and the circulating pump 1 continuously sends the liquid material to be filtered in the buffer tank 101 through the delivery pipe 4 In the inner cavity 21, the remaining liquid material after filtration flows back to the buffer tank 101 through the first pipeline 5 from the inner cavity 21, and the filtered clear liquid is contained in the outer cavity 22 and output through the second pipeline 6, as shown in the attached figure 2 As shown in, the cross-flow filtration control method of the pres...

no. 2 example

[0045] The present invention also provides a cross-flow filtration device 200, such as image 3 As shown in , including a buffer tank 101, a circulation pump 1 and a filter chamber 2, the filter chamber 2 is provided with a cross-flow filter membrane 3, the cross-flow filter membrane 3 isolates the filter chamber into an inner chamber 21 and an outer chamber 22, and the circulation pump 1 The liquid material to be filtered in the buffer tank 101 is continuously sent into the inner cavity through the delivery pipeline 4, and the remaining liquid material after filtering flows back to the buffer tank 101 through the first pipeline 5 from the inner cavity 21, and the clear liquid obtained by filtering Accommodated in the outer cavity 22 and output through the second pipeline 6, the delivery pipeline 4 is provided with a delivery flowmeter 42 for measuring the flow rate of the liquid material in the delivery pipeline, and the first pipeline 5 is provided with a flowmeter for adjust...

no. 3 example

[0056] The present invention also provides a cross-flow filtration system, including the above-mentioned cross-flow filtration device 200 and a controller 300, such as Figure 4 As shown in , the controller 300 includes a receiving module 301, a sending module 302 and an operating module 303. The operating module 303 is provided with a predetermined value A, a first set value B1 and a second set value B2. The filtering process of the filtering device 200 is controlled, specifically:

[0057] Turn on the circulating pump, the receiving module 301 receives the signal from the delivery flow meter 42, and when the liquid flow in the delivery pipeline 4 reaches a predetermined value A, the sending module 302 sends a signal to the first regulating valve 51 and the second regulating valve 61 to fully open the first regulating valve 51 and the second regulating valve 61. A regulating valve 51 and a second regulating valve 61;

[0058] The receiving module 301 receives the signal from...

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Abstract

The invention relates to a cross flow filtration control method for controlling cross flow filtration equipment, a cross flow filtration device and a cross flow filtration system. The cross flow filtration equipment comprises a buffer tank, a circulating pump and a filtration cavity, wherein to-be-filtered liquid in the buffer tank is continuously delivered into the filtration cavity by the circulating pump; liquid remaining after filtration flows back to the buffer tank from the filtration cavity through a first pipe; and clear liquid obtained by filtration is accommodated in an outer cavityand is drained through a second pipe. The filtration method comprises a stage of completely opening the first pipe and the second pipe, a stage of turning down the second pipe when the liquid flow ofthe second pipe is reduced and a stage of turning down the first pipe and turning up power of the circulating pump when the liquid flow of the second pipe continues being reduced; a cross flow filtration process is controlled in a staged manner, so that total cross flow filtration time can be prolonged, functions of a cross flow filtration film can be fulfilled well, equipment value of the cross flow filtration film is embodied well, and the marketing value is quite high.

Description

technical field [0001] The invention relates to a cross-flow filtration control method, a cross-flow filtration device and a cross-flow filtration system. Background technique [0002] In the field of liquid material filtration, during traditional filtration, the filtered liquid is perpendicular to the filter membrane surface, and the sediment accumulates on the surface of the filter medium. When the thickness of the precipitate layer increases to a certain extent, the pores of the filter medium are blocked, and the filtration process is forced to and cross-flow filtration breaks the traditional filtration mechanism. During cross-flow filtration, the flow direction of the liquid material is tangent to the direction of the filter membrane surface, and the shear force generated when the liquid material flows through the membrane surface can bring the particles retained on the membrane surface. Go, so that the pollution layer is kept at a relatively thin level, so that the pore...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D61/00B01D65/02
Inventor 黄粵宁张勇
Owner NINGBO LEHUI INT ENG EQUIP CO LTD
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