WO2017134019A1

WO2017134019A1 - Separating device

Info

Publication number: WO2017134019A1
Application number: PCT/EP2017/051959
Authority: WO
Inventors: Simon Buck; Sebastian BARNER
Original assignee: Elringklinger Ag
Priority date: 2016-02-04
Filing date: 2017-01-30
Publication date: 2017-08-10
Also published as: DE102016201715A1

Abstract

In order to create a separating device that has a simple design and allows impurities to be eliminated efficiently and reliably, the separating device comprises the following: a housing that surrounds an at least approximately cylindrical separation chamber in the separating device; a rotary separator in the separation chamber to separate impurities, in particular drops of liquid, from the crude gas flow; a feeding unit for feeding a crude gas flow to the rotary separator; and a discharge unit for discharging a purified gas flow from the separation chamber; the discharge unit includes a first discharging section, a second discharging section and a flow deflecting section between the two discharging sections.

Description

separating

The present invention relates to a separation device, in particular an oil separator. A separation device is used in particular for separating impurities from a crude gas stream. For example, the separator may serve to separate oil droplets from a stream of crude gas containing oil droplets.

Separating devices are known for example from DE 10 2012 104 598 AI, DE 199 14 166 AI, DE 699 06 019 T2, DE 103 50 562 AI and DE 10 2013 207 058 AI.

The present invention has for its object to provide a separation device, which is simple in construction and allows efficient separation of impurities.

This object is achieved according to the invention by a separation device for separating impurities from a stream of raw gas, the separation device comprising:

a housing which has an at least approximately cylindrical

Surrounds the separation chamber of the separator;

a arranged in the separation chamber rotary separator for

Separation of impurities, in particular liquid droplets, from the

raw gas stream;

a supply device for supplying a raw gas flow to the rotary separator;

a discharge device for discharging a clean gas flow from the separation chamber, the discharge device comprising a first discharge section, a second discharge section and a flow deflection section arranged between the two discharge sections. - -

Due to the fact that the separation device comprises a flow deflection section, an undesired discharge of contaminants from the

Separating space preferably reduced to a minimum or completely avoidable.

In one embodiment of the invention can be provided that the first discharge section surrounds the second discharge section at least partially annular or cylinder jacket-shaped or cone-shaped.

The first discharge section is preferably at least in sections an annular channel or cylinder jacket-shaped or cone-shaped channel which surrounds the second discharge section at least in sections.

It may be favorable if the second discharge section comprises a discharge nozzle or discharge channel, which projects into the first discharge section.

Furthermore, it can be provided that the second discharge section is formed by a discharge nozzle or discharge channel, which projects into the first discharge section.

The first discharge section and the second discharge section preferably have a common wall, which is in particular at least approximately cylindrical jacket-shaped or cone-shaped.

It may be advantageous if the first discharge section at least

in sections through a bulge in a separation room

surrounding segregation wall of the housing is formed.

Relative to a rotational axis of the rotary separator, this bulge is preferably designed radially outward in the separation wall. - -

The axis of rotation of the rotary separator is preferably also an axis of rotation or axis of symmetry of the separating chamber and the separating wall.

The bulge, which forms at least part of the first discharge section, is preferably a niche formed in the separation wall.

It may be favorable if the bulge connects in the radial direction on the outside to the rotary separator.

Preferably, the bulge is at least largely arranged at the same height as the rotary separator, in particular with respect to a direction parallel to the axis of rotation of the rotary separator.

A bottom wall bounding the first discharge section in a direction of gravity downward preferably comprises a drainage slope or is designed as a drainage slope.

The drainage slope preferably opens into the separation chamber. This means, in particular, that a liquid draining on the drainage slope flows directly into the separation chamber. In this way, in particular, a separated liquid can be held in the separation chamber or returned to it in order to avoid an undesired escape via the discharge section.

It can be advantageous if the housing comprises two housing halves.

The first discharge section, the second discharge section and / or the

Strömungsumlenkabschnitt are preferably formed by a single of the two housing halves and / or formed integrally with the housing half. - -

Furthermore, it can be provided that at least part of the first discharge section, at least part of the second discharge section and / or at least part of the flow deflection section is formed by a single one of the housing halves or is integrally formed with a housing half.

The housing is preferably formed of a plastic material or comprises a plastic material.

In particular, it can be provided that the housing comprises two housing halves, which are designed as injection-molded components.

The two housing halves are in particular plastic injection-molded components.

It can be provided that the clean gas flow in the first discharge section against the direction of gravity can be guided upwards, in particular to over an upper edge of the rotary separator.

In the second discharge section, the clean gas flow is preferably feasible downwards in the direction of gravity.

It may be favorable if the clean gas flow can be deflected by at least approximately 180 ° by means of the flow deflection section.

It may be advantageous if the clean gas flow in the first discharge section can be guided or guided essentially in the form of a ring or cylinder jacket or cone jacket.

The clean gas flow is preferably substantially cylindrical or conically guided or guided in the second discharge section.

It can be advantageous if the clean gas flow by means of the Strömungsumlenkabschnitts of an annular or cylinder jacket-shaped or cone-shaped current in the first discharge in a - - Cylindrical or conical flow in the second discharge section can be transferred.

The Strömungsumlenkabschnitt is preferably formed in sections of a housing half and sections of a fixed or definable on the housing half cover element.

The cover element may for example be fixed positively and / or non-positively on the housing half, for example by means of a clip connection, a welded connection and / or a snap-hook connection.

In one embodiment of the invention can be provided that the

Flow deflection section comprises a pressure control valve.

By means of such a pressure regulating valve, in particular a fluid connection between the first discharge section and the second discharge section is selectively releasable or lockable, in particular depending on prevailing pressure conditions in the first discharge section, in the second discharge section and / or in an environment of the separation device.

A pressure regulating valve may be provided, in particular, when the separating device is used in or on a motor device with a closed crankcase ventilation. A pressure control valve may preferably be dispensable if the separation device is used in or on a motor device with (to the environment) open crankcase ventilation.

It can be advantageous if the first discharge section and / or the second discharge section and / or the flow deflection section comprise one or more filling elements and / or separating elements.

A filling element and / or a separating element can be, for example, a fleece, a filter element or another element through which it can flow. - -

A separating element can furthermore be, for example, a baffle element or another flow baffle element.

By means of one or more spacers is preferably a distance between the one or more filling elements and / or the one or more deposition elements on the one hand and one or more the first discharge section and / or the second discharge section forming walls on the other hand produced.

A filling element and / or a separating element is in particular a

Coalescing element, for example from a coalescing medium, in which in the gas stream entrained impurities, in particular liquid droplets, are deposited.

It can be advantageous if a surface of the first discharge section, of the deflection section and / or of the second discharge section facing the clean gas flow to be discharged has a coating or other surface treatment. In particular, an adhesion-reducing coating and / or surface treatment can be provided in order to promote the drainage of impurities, in particular liquids.

In one embodiment of the invention can be provided that the

Separating device comprises a separation wall surrounding the separation space, which comprises at least one run-off edge for interrupting an otherwise substantially circular cylindrical inner surface of the separation wall.

The run-off edge preferably forms an obstacle to a peripheral flow which circulates in the circumferential direction relative to the rotational axis of the rotary separator, which arises in particular due to the rotation of the rotary separator and the gas flow generated thereby. - -

The run-off edge preferably runs essentially obliquely to the circumferential direction and / or obliquely to the rotation axis.

However, it can also be provided that the drainage edge runs parallel to the axis of rotation and / or perpendicular to the circumferential direction.

The separating wall, which surrounds the separating space, is preferably at least approximately cylindrical-jacket-shaped, in particular apart from a bulge forming at least a part of the first discharge section and / or apart from the at least one discharge edge.

Due to the outflow edge, there is preferably a local accumulation of impurities, in particular liquid, along the circumferential direction of the separation wall, which facilitates downflow in the direction of gravity.

The first discharge section and / or the second discharge section are preferably slightly conical, at least in sections, in particular in order to facilitate demolding during production in the injection molding process.

The separation device is preferably an oil separation device for separating oil mist from an oil mist-containing gas stream.

Further preferred features and / or advantages of the invention are the subject of the following description and the drawings of exemplary embodiments.

In the drawings show:

Fig. 1 is a schematic perspective view of a

Separation device; FIG. 1 is a schematic plan view of an upper side of the separation device of FIG. 1; FIG. a schematic section through the separating device of FIG. 1 along the line 3-3 in Fig. 2; an enlarged view of the area IV in FIG. 3; a schematic perspective view of a housing half of a housing of the separator of FIG. 1 ; a further schematic perspective view of the housing half of FIG. 5; a schematic perspective view of a further housing half of the housing of the separator of FIG. 1; a schematic longitudinal section through the separating device of FIG. 1 along the line 8-8 in FIG. 2; 4 a corresponding schematic representation of an alternative embodiment of a discharge device of the separation device from FIG. 1 ; and an enlarged view of the area X in FIG. 9th

Identical or functionally equivalent elements are provided with the same reference numerals in all figures.

A first embodiment of a separating device designated as a whole as 100 in FIGS. 1 to 8 is, for example, an oil separator. - -

Sheath device and serves to remove oil mist from a crude oil stream containing oil mist.

The separation device 100 comprises a housing 102, which is formed in particular from two housing halves 104.

The housing 102 surrounds an interior 106, which is in particular divided into several parts.

A part of the interior 106 is in particular a separation chamber 108 in which, in the assembled state of the separation device 100, a rotary separator 110 is rotatably arranged, in particular mounted.

The rotary separator 110 comprises in particular a stack 112 of flow elements 114.

Via a feed device 116 of the separator 100 is the

Rotary separator 110 preferably a crude gas stream containing impurities can be supplied.

In particular, the raw gas stream can be introduced centrally into the stack 112 of flow elements 114 along a rotation axis 118 (see in particular FIG. 8).

In the radial outward direction, the raw gas stream can flow through the stack 112 of flow elements 114, impurities contained in the raw gas stream being deposited on the flow elements 114 and / or on a separation wall 120 surrounding the separation chamber 108 and thus being separated from the gas stream.

The untreated crude gas stream is then a clean gas stream. - -

The rotary separator 110 is in particular mounted on a shaft 122 or provided with a shaft 122.

Also arranged on the shaft 122 is preferably a drive element 124, for example a turbine element 126.

By means of a nozzle 128, preferably a fluid jet, in particular an oil jet, can be directed onto the drive element 124 in order to set the drive element 124 together with the shaft 122 and the stack 112 of flow elements 114 in rotation.

The drive element 124 is preferably arranged outside of the separation chamber 108, in particular in order to avoid an undesired contamination of the purified gas flow with the fluid from the nozzle 128.

As in particular the Fig. 3 and 4, the separation device 100 preferably comprises a discharge device 130 for discharging purified gas (clean gas), in particular for discharging the clean gas flow, out of the separation chamber 108.

The removal device 130 is arranged and / or formed in particular adjacent to the separation chamber 108.

In particular, the discharge device 130 comprises a first discharge section 132 which, for example, by a bulge 134 in the

Abscheideraum 108 surrounding separation wall 120 is formed.

The first discharge section 132 is formed in sections annular or cylindrical jacket-shaped or cone-shaped and bounded with respect to the direction of gravity g downwards by a drainage slope 136. - -

The drainage slope 136 is in particular designed and / or arranged such that liquid flowing off via this drainage slope 136 flows back directly into the separation chamber 108.

The discharge device 130 further includes a second discharge section 138.

The second discharge section 138 comprises in particular a discharge nozzle 140 or discharge channel 142, which projects into the first discharge section 132 and / or is surrounded by the first discharge section 132.

The first discharge section 132 is preferably arranged adjacent to the separation chamber 108 in such a way that gas discharged from the separation chamber 108 can flow away from the rotary separator 110 in the radial direction and can flow into the first discharge section 132.

By means of the first discharge section 132, the discharged clean gas stream is preferably conducted upwards, at least in sections, counter to the direction of gravity g.

The first discharge section 132 preferably ends above an upper edge 144 of the stack 112 of flow elements 114.

The second discharge section 138 preferably begins above the upper edge 144 of the stack 112 of flow elements 114.

In particular, preferably an outlet opening 146 of the first

Abführabschnitts 132 and an inlet opening 148 of the second discharge section 138 above the upper edge 144 of the stack 112 of flow elements 114 arranged.

The first discharge section 132 and the second discharge section 138 are preferably fluidly connected to one another by means of a flow deflection section 150. - -

In particular, by means of the flow deflecting section 150, the clean gas flow guided upwards in the first discharge section 132 against the direction of gravity g can be deflected and introduced downward in the direction of gravity g into the second discharge section 138.

By means of the Strömungsumlenkabschnitts 150 thus in particular a flow deflection of 180 ° is possible.

Further, by means of the Strömungsumlenkabschnitts 150 preferably the first annular or cylinder jacket-shaped or cone-shaped clean gas stream in the first discharge 132 is centrally combined and as a cylindrical or conical gas flow through the second

Abführabschnitt 138 discharged.

The second discharge section 138 is preferably approximately hollow cylindrical, wherein, in particular for facilitating a simplified production, a slightly conical inner shape and / or outer shape can be provided.

At the opposite end of the inlet opening 148 of the second

Abführabschnitts 138 is the outlet opening 152 of the second discharge section 138, via which the clean gas stream for further use or cleaning can be supplied or discharged to the environment of the separation device 100.

The housing halves 104 of the housing 102 of the separating device 100 are in particular formed as one-piece plastic injection-molded components.

The first discharge section 132, the second discharge section 138 and at least part of the flow deflection section 150 are preferably

Part of a one-piece housing half 104th - -

For completing the Strömungsumlenkabschnitts 150, for example, a cover member 154 may be provided.

This cover element 154 is placed in particular on the first discharge section 132 and the second discharge section 138 and thus covers the first discharge section 132 and the second discharge section 138, in particular against the direction of gravity g.

As in particular the Fig. 5 to 7, one or both housing halves 104 preferably each comprise at least one, in particular two, discharge edges 156.

The run-off edges 156 are formed in particular on the separation wall 120 surrounding the separation chamber 108.

The trailing edges 156 form an obliquely or perpendicular to a

Circumferential direction of the separation chamber 108 extending obstacle.

By means of the outlet edge 156 can be effected that a circulating flow of impurities, in particular liquid, such as oil, which due to the rotation of the rotary separator 110 in

Separating chamber 108 along the separation wall 120 results, is interrupted locally. The respectively accumulating liquid in the region of the run-off edge 156 can then run down more easily in the direction of gravity g.

In particular, it can be prevented by means of the one or more drain edges 156 that liquid, in particular oil, flows into the discharge device 130, in particular into the first discharge section 132.

One in FIGS. 9 and 10 illustrated alternative embodiment of the discharge device 130 differs from that shown in Figs. 1-8 - - First embodiment essentially exclusively by the use of additional components and / or elements.

For example, it can be provided that the flow deflection section 150 of the discharge device 130 forms or comprises a receptacle 158 for a valve, for example a pressure regulating valve 160.

The flow deflecting section 150 can thus selectively release or close a fluid connection between the first discharge section 132 and the second discharge section 138 by means of the valve, in particular the pressure regulating valve 160.

In this case, the pressure regulating valve 160 can prevent unwanted return flows or cross flows in the separation device 100, in particular through suitable fluid connection to an environment of the separation device 100.

The discharge device 130 may further comprise, for example, a filling element 162, in particular a fleece.

The filling element 162 may, for example, be arranged in the first discharge section 132 and / or in the flow deflection section 150 and serve for the additional separation of impurities.

For example, the filling element 162 fills the first discharge section 132 in sections.

The filling element 162 can be flowed through in particular with the clean gas flow.

As in particular Fig. 10, it can be provided that the filling element 162 is held by means of spacers 164 spaced from a radially outer outer wall 166 of the first discharge section 132. - -

As a result, in particular, a gap 168 between the filling element 162 and the outer wall 166 can be produced and / or maintained. This gap 168 in particular allows a flow of liquids deposited by means of the filling element 162 or above the filling element 162 and a flow back into the separation space 108.

Furthermore, it can be provided that the discharge device 130 comprises one or more impact elements 170.

Such baffles 170 serve in particular to influence the

Flow within the discharge device 130, to ultimately prevent unwanted discharge of impurities, in particular liquid, via the discharge device 130 to the environment of the separation device 100.

All elements shown and described with reference to FIGS. 9 and 10 may be provided individually or in any combination with each other, to the in Figs. 1 to 8 illustrated embodiment of a separation device 100 further.

Claims

claims

A separation apparatus (100) for separating contaminants from a raw gas stream, comprising:

a housing (102) surrounding an at least approximately cylindrical separation space (108) of the separation device (100);

a rotary separator (110) arranged in the separation chamber (100) for separating impurities, in particular liquid droplets, from the raw gas stream; a supply device (116) for supplying a raw gas flow to the rotary separator (110);

a discharge device (130) for discharging a clean gas flow from the separation chamber (108), the discharge device (130) having a first discharge section (132), a second discharge section (138), and a flow deflection section (150) disposed between the two discharge sections (132, 138) ).

2. Separating device (100) according to claim 1, characterized in that the first discharge section (132) surrounds the second discharge section (138) at least in sections in an annular or cylinder jacket-shaped or cone-shaped manner.

3. Separating device (100) according to one of claims 1 or 2,

characterized in that the second discharge section (138) by a discharge nozzle (140) or discharge channel (142) is formed, which projects into the first discharge section (132).

4. Separating device (100) according to any one of claims 1 to 3, characterized in that the first discharge section (132) at least in sections by a bulge (134) in a separation chamber (108) surrounding separation wall (120) is formed.

5. Separating device (100) according to claim 4, characterized in that the first discharge section (132) in a direction of gravity (g) downwardly bounding bottom wall comprises a drainage slope (136) or is formed as a drainage slope (136), wherein the drainage slope (136) opens into the separation chamber (108).

6. separator (100) according to any one of claims 1 to 5, characterized in that the housing (102) comprises two housing halves (104), wherein the first discharge section (132), the second discharge section (138) and / or the Strömungsumlenkabschnitt ( 150) is formed by a single one of the housing halves (104).

7. deposition device (100) according to one of claims 1 to 6, characterized in that the housing (102) is formed of a plastic material.

8. Separating device (100) according to one of claims 1 to 7, characterized in that the housing (102) comprises two housing halves (104) which are formed as injection-molded components.

9. Separating device (100) according to one of claims 1 to 8, characterized in that the clean gas flow in the first discharge section (132) counter to a direction of gravity (g) can be guided upwards, in particular to an upper edge (144) of the rotary separator (110) ,

10. Separating device (100) according to one of claims 1 to 9, characterized in that the clean gas flow by means of the Strömungsumlenkabschnitts (150) is deflected by at least approximately 180 °.

11. Separating device (100) according to one of claims 1 to 10,

characterized in that the clean gas flow in the first discharge section (132) substantially annular or cylinder jacket-shaped or cone-shaped lead-out or guided, that the clean gas flow in the second discharge section (138) is substantially annular or cylindrical or conically guided or guided and that the clean gas flow by means of Strömungsumlenkabschnitts (150) of an annular or cylinder jacket or cone-shaped current in the first discharge section (132 ) can be converted into a cylindrical or conical flow in the second discharge section (138).

12. Separating device (100) according to one of claims 1 to 11,

characterized in that the Strömungsumlenkabschnitt (150) in sections from a housing half (104) and partially from a on the housing half (104) fixed or definable lid member (154) is formed.

13. Separating device (100) according to one of claims 1 to 12,

characterized in that the flow diverting section (150) comprises a pressure regulating valve (160).

14. Separating device (100) according to one of claims 1 to 13,

characterized in that the first discharge section (132) and / or the second discharge section (138) and / or the Strömungsumlenkabschnitt (150) one or more filling elements (162) and / or

Separating elements comprises.

15. Separating device (100) according to one of claims 1 to 14,

characterized in that a separating space (108)

surrounding separation wall (120) comprises at least one run-off edge (156) for interrupting an otherwise substantially circular-cylindrical inner surface of the separation wall (120).