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Irregular box type mixer

A mixer and special-shaped technology, applied in the direction of fluid mixers, mixers, chemical instruments and methods, etc., can solve the problems of inconvenient installation and disassembly, large pressure loss, high pressure loss, etc., and achieve simple structure and low flow field pressure difference , No flow dead angle effect

Inactive Publication Date: 2018-10-12
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the high flow rate in the pipeline before the reactor, the existing commercial static mixers, such as SK type, SV type, SL type and HEV type, have a high pressure loss on the SCR system, and when equipped with an SCR system , there will be certain requirements for the overall pressure loss of the SCR system, which limits the application of these commercial static mixers
The existing static mixer not only produces a large pressure loss, but also is easy to block and inconvenient to install and disassemble

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The special-shaped box mixer specifically includes a pipeline 1, an inlet pipe 5 is provided on one side of the pipeline 1; an outlet pipe 6 is provided on the other side of the pipeline 1 away from the inlet 5; a plurality of pipes are evenly arranged in the pipeline 1 The special-shaped box 3, the said special-shaped box 3 is a prism-like shape composed of two mutually perpendicular rectangles at the entrance and exit, and the interior of the structure is hollow; the outer wall of the said special-shaped box 3 is provided with a bracket 2, and the special-shaped box 3 passes through the bracket 2 It is fixedly connected with the inner wall of the pipeline 1; the outlet end of the pipeline 1 is provided with a fixed snap ring 4) and the position of the bracket 2 is fixed through the fixed snap ring 4.

Embodiment 2

[0026] The quantity of special-shaped boxes 2 is 5-8 and is all arranged in the pipeline 1, the spacing between the special-shaped boxes 3 is equal, and other structures are the same as in embodiment 1.

[0027] The present invention uses special-shaped box 3 to mix the fluid. When the fluid flows through the first special-shaped box 3, it is divided into two layers. One layer flows along the outside of the special-shaped box 3. Through the diversion of the shell of the special-shaped box 3, the pipeline 1. The central fluid flows outward; the other layer enters the special-shaped box 3 and mixes in the box; part of the fluid flowing out of the first special-shaped box 3 will enter the second special-shaped box 3 for mixing, and the other part will flow along the second special-shaped box 3. The outer sides of the two special-shaped boxes 3 flow. The outlets and inlets corresponding to adjacent special-shaped boxes 3 are perpendicular to each other (as Figure 7 ), so that th...

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Abstract

The invention provides an irregular box type mixer. The irregular box type mixer comprises a pipeline (1), wherein irregular boxes (3) are uniformly distributed in the pipeline (1); each irregular box(3) is in a shape of prism frustum formed by two mutually perpendicular rectangles at an inlet and an outlet and is hollow inside; a support (2) is arranged on the outer wall of each irregular box (3) and each irregular box (3) is fixedly connected with the inner wall of the pipeline through the corresponding support (2); a fixing clamping ring (4) is arranged at an outlet end of the pipeline (1), and the position of each support (2) is fixed through the fixing clamping ring (4). The irregular box type mixer is simple in structure, has no flowing dead corners, is sufficient in mixing and canbe applied to various industrial fields, particularly to mixing of a reducer and flue gas in front of an SCR reactor, so that a mixed solution reaches the expected flue gas removal effect, raw materials are saved, and the environment is protected.

Description

technical field [0001] The present invention relates to a fluid mixing device, in particular to a static mixer. Background technique [0002] SCR post-treatment technology, also known as exhaust post-treatment technology, refers to the technology to properly treat the exhaust gas emitted by the engine to reduce environmental pollution. SCR post-treatment technology has been widely used as a method of flue gas denitrification. Its principle It is the reducing agent that reacts with NOx (nitrogen oxides) in the flue gas under the action of the catalyst to generate nitrogen and water. Among them, the mixing degree of reducing agent and flue gas is an important factor affecting the efficiency of the SCR system. The uneven mixing of reducing agent and flue gas not only reduces the denitrification rate of the system, but also increases the amount of ammonia slip. Therefore, a static mixer is usually installed in front of the SCR system reactor to solve the mixing problem of reduc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F5/06B01D53/86B01D53/56
CPCB01D53/8631B01D2258/0283B01F25/431
Inventor 肖友洪王鑫李全李想朱天宇邵延忠
Owner HARBIN ENG UNIV
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