RU2633671C1 - Mixer-turbulator - Google Patents

Abstract

FIELD: machine engineering.

SUBSTANCE: mixer-turbulator comprises a body, in which there is a through cavity filled with inserts. A fairing is in the middle part of the body between the inserts. The inserts are made in form of coaxial rings, at that there are grooves are made on the outer and inner surfaces of the inserts. A row of standing near inserts form a smoothly narrowing inlet and a smoothly widening outlet.

EFFECT: increased values of turbulent diffusion coefficients in channels for providing mixing and crushing of drops during one-three pipeline passes behind the mixer.

6 cl, 2 dwg

Description

The invention relates to the field of devices intended for mixing heterogeneous mixtures, and can be used in the petrochemical, chemical, gas, oil refining, coke and other industries in the processes of absorption and extraction.

Known (RU patent md No. 110738, publ. 11/27/2011) mixer-turbulator, which is a steel cylindrical tank, equipped with inlet and outlet nozzles, built-in turbulence elements, which are partitions fixed on the inner surface of the tank alternately on opposite sides containers, with a slope in the direction of flow, and the passage section between the turbulizing element and the inner wall of the container is as close as possible to the passage section of the inlet pipe, and the diameter e bone exceeds the diameter of the inlet and outlet pipes not less than twice.

Also known (RU patent No. 2080164, publ. 27.05.97) is a multi-cone inkjet apparatus in the form of a sealed container in which a series of conical nozzles are arranged centrally arranged in series with each other with the formation of an annular gap between them, a conical channel for product passage with the top with the input side of the workflow.

The disadvantage of both known devices should be recognized as the instability of the turbulent flow and the resulting insufficient efficiency of the interaction of the contacting heterogeneous flows.

The closest analogue of the developed device can be recognized (RU patent No. 2298430, publ. 10.05.2007) a turbulent reactor for mixing heterogeneous mixtures, containing a cylindrical body with nozzles for feeding the mixed reagents and alternating coaxial inserts arranged in it in the form of confuser-diffuser elements, moreover, the confuser-diffuser elements are installed with a certain step.

A disadvantage of the known device should be recognized as insufficient efficiency due to insufficient turbulence of flows in the mixing zone.

The technical problem, solved using the developed device, is to expand the range of mixer-turbulators.

The technical result achieved by the implementation of the developed design of the mixer-turbulator is to increase the values of the turbulent diffusion coefficients in the channels formed so as to provide maximum flow turbulence, which will provide significant turbulization at the mixer outlet, ensuring the process of mixing and crushing drops for one to three pipe gauges behind the mixer.

To achieve the specified technical result, it is proposed to use a mixer-tubulator of a developed design. The mixer-turbulator contains a housing in which a through cavity filled with inserts is made, a fairing is located between the inserts in the middle part of the housing, the inserts are made in the form of coaxial rings, and grooves are made on the outer and inner surfaces of the inserts.

The gas flow with fluid inclusions passing through adjacent inserts is disturbed by grooves grooved on the inserts. In this case, there is a breakdown of fluid inclusions into small components, as well as intensive mixing of the flow.

Nearby standing inserts form a smoothly tapering inlet and a smoothly expanding outlet, which ensures minimal pressure loss on the device. The fairing in this case aligns the flow in front of the mixer-turbulator. In addition to the function of a mixer-turbulator, the developed device can perform the function of an absorber due to good mixing of flows (for example, glycol and gas with water vapor, when glycol absorbs water during the drying of natural gas).

The mixer-turbulator is designed to mix several substances in any aggregate states: gas-gas, liquid-liquid, liquid-gas. In the latter case, the liquid present in the gas stream is crushed into the smallest drops (up to 4-20 microns). The cost ratio of the miscible components is arbitrary. They may be comparable or some components may be supplied in the form of additives, the consumption of which is a fraction of a percent of the total consumption. Good mixing is achieved due to the high values of the turbulent diffusion coefficients in the channels formed so as to provide maximum flow turbulization. Significant turbulization is maintained at the outlet of the mixer-turbulator, so the process of mixing and crushing drops continues for one to three calibers of the pipeline behind the mixer.

In some embodiments, two flange connections may be disposed on the housing for mounting the mixer-turbulator in the pipeline. However, the connection with the pipeline can be made using pipes or welding.

Preferably, the inserts are fixed in the housing using pylons. The pylon in this case is a multi-beam design, on the rays of which grooves are made to fix the inserts. Preferably made of a chemically resistant material (polymer or metal alloy).

Typically, the grooves on the surface of the inserts are perpendicular to the axis of the housing.

The grooves can be made of arbitrary shape (rectangular, trihedral, etc.), which maximizes the turbulence of the flow.

At least one nozzle can be installed at the inlet of the device, which improves mixture formation.

In FIG. 1 shows a General view of the developed device, with the following notation: inserts 1, fairing 2, pylon 3, housing 4; in FIG. 2 shows an insert on the surface of which a groove 5 is made.

The developed device operates as follows.

In natural gas, which is fed to compressors or turboexpander, there are inclusions of liquid (condensate). Liquid entering the compressor pistons or turbo expander blades results in water hammer. The mixer-turbulator breaks the liquid into fine dust, i.e. creates a homogeneous flow. This leads to stable operation of compressors and turbo expanders.

When drying gas, the developed mixer-turbulator is used as a means of water absorption. To do this, natural gas and glycol are passed through the device. After a mixture of natural gas and glycol passes through a developed mixer-turbulator, a turbolized stream of natural gas is formed with water vapor and microdrops of glycol, which absorb water vapor. Then the microdroplets of glycol with absorbed water are separated from the gas stream.

Using the developed device allows to increase the coefficients of turbulent diffusion by 22%.

Claims (6)

1. A mixer-turbulator containing a housing in which a through cavity filled with inserts is made, characterized in that a fairing is located between the inserts in the middle part of the housing, the inserts are made in the form of coaxial rings, grooves are made on the outer and inner surfaces of the inserts, and adjacent inserts form a smoothly tapering entrance and a smoothly expanding exit. 2. The mixer-turbulator according to claim 1, characterized in that on the body there are two elements of flange connections for mounting the mixer-turbulator in the pipeline. 3. The mixer-turbulator according to claim 1, characterized in that the inserts are fixed in the housing using pylons. 4. The mixer-turbulator according to claim 1, characterized in that the grooves on the surface of the inserts are perpendicular to the axis of the housing. 5. The mixer-turbulator according to claim 1, characterized in that the grooves are made in a form that maximizes the turbulence of the flow. 6. The mixer-turbolizer according to claim 1, characterized in that at least one nozzle is installed at its inlet.

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