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An apparatus and a method for introducing a first fluid into the flow path of a second fluid and use of such an apparatus

A first fluid, fluid technology, applied in chemical instruments and methods, flow control, fluid mixers, etc., can solve the problems of insufficient steam mixing, difficult to mix or diffuse blended fluids, implosion, etc., to reduce steam The effect of implosion

Active Publication Date: 2013-07-31
ANDRITZ AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] One problem with the previously known systems mentioned above is that they have difficulty mixing or diffusing the blended fluids effectively when the fluid flow in which they are being mixed changes suddenly.
In case of sudden fluctuations in the flow rate of the liquid or suspension, there is a risk that the mixing of the steam becomes insufficient, wherein there is a risk of intermittent steam implosions

Method used

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  • An apparatus and a method for introducing a first fluid into the flow path of a second fluid and use of such an apparatus
  • An apparatus and a method for introducing a first fluid into the flow path of a second fluid and use of such an apparatus
  • An apparatus and a method for introducing a first fluid into the flow path of a second fluid and use of such an apparatus

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Embodiment Construction

[0040]The embodiments of the invention described below are intended for use in process installations where a first fluid in the form of steam is mixed into the flow path of a second fluid in the form of a cellulose pulp suspension, wherein hot steam is used to heat the pulp suspension to Desired temperature, eg a temperature suitable for the subsequent bleaching step. However, it should be understood that the principles of the present invention can be used to mix other fluids into the pulp suspension, for example gases such as oxygen, chlorine or ozone or liquids such as pH adjusting fluids, chlorine dioxide or other treatment fluids. class of liquids. It should also be understood that the second fluid may be of another type than a pulp suspension, eg a process solution.

[0041] The device comprises a substantially parallelepiped housing 1 for receiving pulp suspension from a first conduit 2 upstream and for discharging the pulp suspension into a second conduit 3 downstream....

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Abstract

An apparatus for mixing a first fluid into a flow path (44) of a second fluid, said apparatus having a chamber (12), which encloses the flow path and exhibits a first inlet (13) for receiving the second fluid, a second inlet (15) arranged downstream of the first inlet for receiving the first fluid, as well as an outlet arranged downstream of the second inlet for discharging a mixture of the first fluid and the second fluid, said flow path extending from the first inlet to the outlet and said second inlet opening into the flow path, a throttle body (29), which is pivotally arranged inside the chamber for controlling the flow area of the flow path, and pivoting means (50, 51) for pivoting the throttle body for said controlling of the flow area. According to the invention, the pivoting means is adapted to pivot the throttle body so that the flow area decreases with a decreasing flow rate of the second fluid and increases with an increasing flow rate of the second fluid, in order to maintain the flow velocity of the second fluid at the second inlet within a predetermined range.

Description

technical field [0001] The invention relates to an apparatus for mixing a first fluid into the flow path of a second fluid, said apparatus comprising: [0002] The chamber surrounds the flow path and has a first inlet for receiving the second fluid, a second inlet for receiving the second fluid, a second inlet for receiving the first fluid downstream of the first inlet, and an outlet for receiving the second fluid. downstream of an inlet to discharge a mixture of a first fluid and a second fluid, the flow path extending from the first inlet to an outlet, the second inlet communicating with the flow path; [0003] a throttle body pivotally disposed inside the chamber for controlling the flow area of ​​the flow path; and [0004] The pivoting device is used to pivot the throttle body to control the flow area. [0005] The invention also relates to a method for mixing a first fluid into the flow path of a second fluid, comprising the steps of: [0006] flowing a second fluid f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F5/04B01F5/06D21C9/00D21C9/10G05D7/00B01F25/30B01F25/314B01F25/315B01F25/42B01F25/431B01F25/44B01F25/442B01F35/20B01F35/221B01F35/222B01F35/83
CPCD21C9/001D21C9/00B01F5/0471B01F15/00344Y10T137/87652Y10T137/0357Y10T137/87643Y10T137/7898Y10T137/87619B01F25/314B01F25/4311B01F35/2211D21C9/1005B01F25/30B01F25/315B01F25/42B01F25/44B01F25/4422B01F35/20B01F35/222B01F35/2213B01F35/2214B01F35/833B01F2215/04
Inventor U.詹森J.比约克斯特罗姆
Owner ANDRITZ AB
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