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A method and an apparatus for mixing chemicals having opposite electric charges into a process liquid flow

A technology for chemical substances, mixing equipment, applied in mixing methods, chemical instruments and methods, chemical/physical processes, etc., which can solve problems such as immediate contact

Active Publication Date: 2015-02-11
WETEND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The reason for the above problem is that the relatively compact (due to the requirement that the jet has to penetrate deeply into the process fluid delivery pipe) of the injection mixer have such a high concentration of chemicals in the discharge jet that the oppositely charged chemical Substances inevitably come into contact almost immediately within a single jet or within two parallel jets

Method used

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  • A method and an apparatus for mixing chemicals having opposite electric charges into a process liquid flow
  • A method and an apparatus for mixing chemicals having opposite electric charges into a process liquid flow
  • A method and an apparatus for mixing chemicals having opposite electric charges into a process liquid flow

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Embodiment Construction

[0032] Figure 1 illustrates an existing mixing device such as that discussed in WO-A1-2006008333. The mixing device 10 of FIG. 1 has an inlet 12 for the feed / injection and a centrally disposed hollow member 14 into which the chemical is fed via a conduit 16 . At the lower end of the component 12 there is preferably an annular opening 18 via which the retention chemical is allowed to drain into the fiber suspension. Thus, the mixing of the chemical species with the feed fluid occurs substantially simultaneously with the feeding of the chemical species into the process fluid stream. In addition to the conduit 16 for introducing the chemicals, the mixing device is provided with an inner axial tube 20 running through the hollow member 14 and terminating at the annular opening 18 . The axial pipe 20 can be used to introduce a so-called mixed liquor into a process fluid, such as clean water, recycled water from a paper mill, white water, clear filtrate or some other unclean turbid ...

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PUM

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Abstract

A method including: introducing a first chemical to a first passage of a mixing apparatus attached to the process liquid flow pipe; introducing an injection liquid into a second passage of the mixing apparatus; introducing to a third passage of the mixing apparatus a second chemical having an electrical charge opposite to the electric charge of the first chemical; injecting the first chemical into the injection liquid by passing the first chemical through a passage between the first passage and the second passage; introducing the mixture of the first chemical and the injection liquid to a process liquid flowing through the process liquid flow pipe, and introducing the second chemical from the third passage to the process liquid in the process liquid flow pipe, wherein the second chemical passes from the third passage to the process liquid a distance from the injection of the first chemical into the injection liquid.

Description

technical field [0001] The present invention relates to a method and apparatus for mixing oppositely charged chemical species into a process fluid stream. Accordingly, the method and apparatus of the present invention are well suited for mixing into process fluid streams chemicals that either react rapidly with each other, bond with each other, or otherwise affect the operation of each other. According to an advantageous embodiment of the present invention, the method and the apparatus can be applied, for example, in the pulp and paper industry for mixing for example processing pulp or paper chemicals like retention chemicals with opposite charges into in the fiber suspension stream. Background technique [0002] Of course, there are virtually countless prior art methods of mixing various chemicals into a liquid stream. However, these methods can be divided into several main categories as can be seen below. Firstly, it is quite possible to simply allow the liquid to be ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F3/08B01F5/04D21H23/20
CPCB01F5/0405D21H23/20B01F3/0803B01F5/0463B01F5/048B01F2215/0036B01F2015/0221B01F3/0865B01F5/04B01F15/0254B01F5/0458B01F5/0471B01F23/451B01F25/311B01F25/31323B01F25/31331B01F25/314B01F25/31423B01F35/715B01F25/20B01F25/30B01F23/405B01F35/7179B01F2101/2204
Inventor J.马图拉J.梅金恩
Owner WETEND TECH