DE3324196A1 - METHOD AND DEVICE FOR THE CONTINUOUS PRODUCTION OF GREASE - Google Patents

Description

1. MTA Müszaki Kemiai Kutato Intezet, Veszprem / Hungary

2. Komaromi Köolajipari Vällalat, Komärom / Hungary

Method and device for the continuous production of lubricating grease

The invention "relates to a method and an apparatus for the continuous production of lubricating grease.

It is well known that the methods of making grease vary depending on the type of grease used differentiate gel-forming components, but essentially from saponification, from dehydration of the resulting from the saponification or in the Mixture, water introduced and / or the solvent content or the desolvation of the latter, dispersing the soap melt as well as cooling and Consist of homogenizing the mixture.

The saponification includes, as far as the operations are concerned, the mixing of the components as well as those for acceleration heat required for reaction. This step not available if prepared, preformed soaps. or other gel-forming substances are used

The dispersion runs partly parallel to the soap preparation, since the saponification in most of the known ones Preset recipes in a mineral oil as a medium will. The dispersion can be achieved by stirring, heating and by. Exploitation of shear forces can be improved.

That formed during the saponification or into the

The water and solvent introduced into the system are drained by der ^ dation or desolvation removes the In modern continuous processes, this is mostly done in film evaporators equipped with stirring blades.

By appropriately designing the rotor of the rotary filament steamer it can be achieved that the heated

or material to be freed from water and solvent as a very thin film in very strong turbulence comes into contact with the heat transferring surface for only a very short time. 3 for highly viscous and non-Newtonian Liquids can practically not occur in the medium forming the front wave, damaging local overheating, Deposits and caking on the #and are not possible because Due to the high speed of the rotor, the film is constantly changing

renewed·
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The gel structure that is responsible for the crystallization of the soap melt and their respective dispersion is formed in the /. Heat treatment s and cooling device.

Cooling is often done by adding the "remaining portion of the oil component and subsequent indirect cooling. In the end The consistency of the structure can be altered by shear forces set in the desired "aSe."

The operations mentioned are mostly in heatable and coolable kettles in which ^ counter-rotating, with Scratch knives provided with clocks are. Known and In many cases, a high-speed mixer in which the mixture is forced is also used, a proportionate one to traverse narrow space, which means' good heat transfer and excellent dispersing effect are guaranteed.

The continuous technology for the production of greases based on Ca, Na and Li (US-FS 3,158,574) can be divided into three sections: the reactor, the dehydration section and the cooling section. In the first portion of Hohrapparates which operates at 27 kPa pressure and 150 ⁰ C, the components are dosed with a pump of the formulation, accordingly, so that a Yerweilzeit 5 minutes is set. The Dehydratationseinheit operates at 35 kPa pressure and 190 ⁰ C. In Sndabschnitt of the cooler is maintained a residence time of less than one minute.

Also known is a process "in which the saponification" is carried out at 108.5 kPa and 3 ^ -0 ⁰ C, in a tubular reactor. In another continuous process for the production of machine grease, the saponification "takes place at room temperature in a grinding device. In this" the fatty acid-containing oil component and the lye move at high speed between the high-speed corrugated rotor and the "stator, with the reaction and

the dispersion take place at the same time. 10

A heat exchanger-disperser is also used for the saponification known, which consists essentially of two concentric cylinders. The outer cylinder is from that surrounding heat transfer medium while the inner cylinder T5 rotates; by means of vanes attached to the surfaces the material was scraped off the wall of both cylinders, whereby a mildew effect is exerted. With this device can a very intensive heat exchange can be achieved.

Known "c is also, a homogenizer in which the zoaponents on a turntable due to strong shear forces disintegrate into elementary particles and mix.

Finally grease to make scream with a fixed proportion of lubricant or for the production of Heavy fluids; in the first step the solid lubricants in the presence of a grinding liquid also in vibratory mills ground. The suspension is then in a static stirrerE ^ provided pipes with the additives and the oil component mixed, the liquid is then-in a film evaporator separated and fed back into the first step of the process. This process involves dispersing accordingly in a special device, in the vibration mill, and the homogenization of the suspension is carried out in a other device made with static guides. In the suitable for the implementation of such procedures,

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Static mixing elements containing pipes are the Material flow cross-sections are identical and are only used to mix the material. In this static Mi see im. the speed of the material flows is therefore the same; this does not allow such intensive mixing that the material flow would also be dispersed at the same time. That's why the material must be dispersed in the vibratory mill.

In summary it can be said that with the described Process mostly with mechanical components in dialing devices is dispersed, and the devices for heat treatment contain scratch knives or the like.

The aim of the invention is to perfect the previously known methods and a method or a Elaborate device with which while maintaining the Advantages of the continuous working method on the mechanical Stirring devices can be dispensed with, l'it the The desired solution should be the number of to carry out the Process required operations, the investment costs and the operating costs are substantially reduced can, the manufacturing process should be accelerated

and deliver a lubricating grease of consistent quality. 25th

The invention accordingly provides a process for the continuous production of lubricating greases, in which Gradient oil, glycerides and / or fatty acids and / or oxidized Paraffin and / or oxy fatty acids and / or other additives be dispersed and saponified in the mixture, dehydrated and / or desolvated the seaction mixture and the Eettgrundlage obtained with stirring in a heat treatment device - if necessary with the addition of additional oil module centers and / or other additives - noir, if necessary is cooled and homogenized while dispersing.

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ORIGINAL INSPECTED BAD ORIGINAL

The process according to the invention is characterized by that the material flows of the components of the starting mixture separated from one another and / or combined and optionally preheated once or repeatedly in one static mixing unit forming Seaktnr, then the dehydrated Fat base after the addition of the oil component in a heated heat treatment device that forms a further static heating unit and finally the mass, if necessary after the addition of further Cl components and / or other Additions, in one also a static Hischeiniieit forming cooling device as a material flow or as several parallel and rectified flows of material leads, while the speed of the material flow (of the material flow) is constantly changing in the opposite sense, whereby one changes in speed in individual sections the lines flowing in at least two space parts separated from one another by a partition wall with one another Ξοη-cakt brings, if necessary one or more Lledien ra.it one or more material streams set in flow, thereby changing the sifting of the material flow and on dispersed in this way and saponified in the reactor, in the heat treatment device (the dehydrated fat base maintaining their temperature, with single or repeated, at least partial recirculation) the fat structure forms and in the cooling device cools the fat, homogenizes it and adjusts its consistency.

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According to one embodiment of the method according to the invention v / is in the static mixing unit, in one or in several of their mater! al stream, at least in one Part of the section of the alternately opposing speed change a direction of flow deviating from the axial direction, Im ixi; renifali generated to this flow running approximately at right angles.

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It is also preferred in the static mixing units that of the main flow running in the axial direction deviating, in the extreme case approximately perpendicular to this. Material flow at the end of the oppositely alternating Section and / or to generate afterwards.

That of the main flow ape, in extreme cases radial flow component can also be generated by the curvature of the partition creating a radial forced flow, ■ j O According to a preferred embodiment of the invention In the process, the material flow in the static mixing units therefore deviates from the main direction Direction of flow, in the extreme case approximately radially by means of

the partitions subjected to a forced flow. 15th

In the method according to the invention, the material

strone contacted one another through discontinuities (holes) in the partition walls. The contact can be at the discontinuity or through them. In the interests of better mixing, material always becomes faster flowing stream brought into contact with one or more slower flowing material streams. Between the faster flowing and the slower flowing material flow • the contact in each section of the · speed change, acceleration or deceleration. For this purpose, in the invention Procedure in the static units in the individual Sections of the changes in speed are the streams of material brought into contact with one another at interruptions in the partition walls.

In the invention, so-called η method, quality or Hatred of saponification, of crystallization, of Dispersing, heating, cooling and homogenizing ice can still be increased by the fact that one is in the static lliscJiunits which are separated from each other by partitions, parallel material flows at the discontinuities of the

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Partition walls by means of those facing the flow edges of the partitions at the same time or in flow direction shifted against each other in partial flows.

According to another preferred embodiment of the method according to the invention, the parallel running Material flows through the static mixing units behind the discontinuities of the partition walls, opposite to the flow and based on the 3nd of the previous dividing wall divided by a certain angle twisted edges into partial flows.

The invention also relates to a device for Production of lubricating greases by means of the implementation of the method according to the invention. The device consists of containers for the starting materials, stirrers, a heated one Saponification reactor, a dehydration and / or desolvation construction, a heated 7 / heat treatment device as well as a cooling and homogenizing device.

The essence of the device according to the invention consists in that their heated saponification reactor, their 7 / era treatment device as well as their cooling device as an independent static mixing unit, with in the interior

delimiting and dividing walls arranged around the longitudinal axis

are provided, and the saponification reactor, the ^äriaebehandluagsvorriclitung and the cooling device - in the following static mixing unit - are designed in such a way that that their with the longitudinal axis and / or with in the direction of a 3-plane laid through the longitudinal axis or with delimiting walls running around the longitudinal axis at least partially including alternating acute and obtuse angles Partition walls together with the partition walls one in sight 5 of the longitudinal axis at least, partly form existing space from alternately wider and narrower seams.

3s is preferred if the static mixing units are involved

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ORIGINAL INSPECTED

have in their interior partitions, which extend with the longitudinal axis or a through this, before certain levels or with those running around the longitudinal axis Delimiting walls alternately include acute and obtuse angles.

It is also preferred if inside the mixing units Partitions "with discontinuities are attached.

It is also preferred if inside the mixing units helical partitions are arranged with the longitudinal axis alternating acute and obtuse angles, with a 3-plane laid through the longitudinal axis one continuously Include changing angle.

It is also preferred, v / hen inside the static [iiischeinheiten successively oppositely threaded partitions are arranged. '■

According to a preferred embodiment of the invention Devices are inside the static mixing device the partition walls following the end of a partition opposite the ersuen by a certain / tine 1 offset.

It is also advantageous if inside the static Mixed units partly self-contained, one starry Partition walls enclosing the hood part are arranged.

Finally, it is preferred according to the invention if the arranged inside the static mixing units, with the Longitudinal axis and / or a predetermined one through the longitudinal axis running jDplane or ■ with those around the longitudinal axis boundary walls running around at least partly alternating pointed and curved partition walls enclosing angular dividing walls of opposing pointed or blunt ". '/ including legs, forming narrowing and wider grounding parts of the skin, self-contained partitions are crossed. .

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With the method according to the invention, lubricating greases with minimal machine effort and minimal Energy expenditure with high productivity and in a constant

Quality are produced.
5

The invention is illustrated by the following exemplary embodiments explained in more detail with reference to the drawings. FIGS. 1-14 show those for the saponification reactor for which Heat treatment device and static mixing units used for the cooling device in section, during 15-17 the schematic arrangement of the execution a complete device for the production of lubricating grease.

As FIG. 1 shows, the boundary wall is circular in this case, and the partition walls 2 form with the longitudinal axis, for example, acute and obtuse angles that change in the direction of the arrow AB. In the illustrated and execu approximate shape are designated .Vinkel supplementary angle. The spatial part I becomes narrower in the direction of the longitudinal axis, ie in the direction of the arrow A3, while the spatial part II becomes wider in the same direction. The head part III, which is only surrounded by the circular boundary 1, has a constant cross-section, the head part 17 becomes narrower in the direction of the longitudinal axis, and the space part V in the same direction. 3o the room part I and the following room parts IV and VII, or the main parts II-V-VIII U57 /. alternately narrower and wider, and at the same time the spatial parts I and II, or IV and 7 etc.

According to another embodiment of the invention

nsL3en device, the room parts I, IV, VII etc. alternately narrower and wider, while the cross-section of the r.auuOeile II, V, VIII etc. always remains the same. the 5 partition walls 2 in FIG. 1 can also be regarded as a single partition wall 2 which has discontinuities at the points 5. In Fig. 1, the arrow A shows the entry of the one, the arrow 3 the entry of the other üaterialstromes while the arrow A3 dea emerges the mixed material

"I.

material flow symbolizes.

In Fig. 2, the section CC of Fig. Λ is shown. A single partition 2, which divides the room into two room parts, is arranged within the circular delimitation wall. In? Ig. 3 can be seen three with each other a -.Yinkel enclosing partition walls 2, which divide the space within the delimitation wall 1 into three parts of the room. According to FIG. 4, six partition walls 2 meet in the axis, and accordingly the inner space is divided into six spatial parts.

According to FIGS. 5 and 6, the boundary wall 2 encloses Square, the partitions 2, 3 and 4- are of different j Length. The partition 3 extends up to the Ab Grenz'.vand 1 and er. j enables the lateral introduction of the material flow 3. The. j Partition walls 2 and 4- form a single, contiguous partition wall which has 5 discontinuities. In Fig. 1, the I. Discontinuity a perforated hole or a screen mesh. '

According to FIGS. 7 and 8, the partition 2 includes a plane a-b running through the longitudinal axis alternately acute and obtuse angles. In Fig. 7 is the Selected 3-level a-b perpendicular to the level of the drawing. In relation to this plane, the partition 2 alternately forms acute and obtuse angles, but it also forms the longitudinal axis related to pointed and obtuse angles. Fig. 8 shows an extreme case of the preceding device which unites the selected Sbere a-b with the plane of the drawing Includes any angle and the partitions 2 with the Planes a-b alternately include acute and obtuse angles. San rotates the plane a-b in the plane of FIG. 8, so close the partitions 2 sit the plane a-b partly a right , Vinkel a, i.e. stand perpendicular to it.

Buttocks of the execution forms shown in FIGS. 9 and 10 are shown, the partition walls 2 do not include any .Vinkel mit-

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each other, but lie in one plane. The partition walls 2 can also be viewed as a single partition wall 2 which has 5 discontinuities. On the boundary wall 1, the square cross-section in this embodiment has, are formed by indentations 6, namely by round and angular indentations 6, constrictions. Together with the partition 2 in the direction of the flow, these first form a narrowing wall, then a wider one nascent space. 11 shows a static mixing unit, which is separated by two partition walls 2 is divided into four parts.

According to FIGS. 12 and 15, the partition walls 2 are as with the longitudinal axis a .Vinkel enclosing helical Arranged structures. In this way, the partitions 2 close with the previously selected one running through the longitudinal axis Level a-b a constantly changing angle. The one on top of the other following trenawalls 2 are in the opposite direction screwed, and based on the end of the previous partition 2, the beginning of the following partition 2 is around one arranged offset at a certain angle. The cross-sections of the spatial parts formed by the partition 2 change constantly.

According to FIG. 14 the dividing walls 2, which are arranged alternately at acute and obtuse angles, are crossed by self-contained dividing walls 7 which form narrower and wider parts of the room and are arranged in acute or obtuse "angles".

3Q When the cooling units according to the invention are functioning neither of the units nor of their elements made any movement; at least one lets through the units zv, -ei partial flows flow; it can also happen that the both partial flows are identical, in this case they differ in, for example, a physical constant, like the temperature. 3You can also split them into two parts beforehand in the interests of better miscibility been sen. The streams of material flow according to the figures

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A and B in the direction of the arrows in the device and at the end of the day they leave this static unit completely mixed as material flow A3.

The invention is illustrated by the following examples explained in more detail.

example 1

In the flask equipped with a stirrer 10 heatable container 11,315 »5 kg lubricating oil component are pumped and heated to 70-80 ⁰ C. Then 6.6 kg of aluminum distearate, 55> 2 kg of stearic acid and 0.06 kg of foam inhibitor are added.

■ p5 In another heatable container 13 »the one with a "" "Uhrer 12 is equipped with 120 liters of 7 / water per 70 g heated and with intensive stirring with 7.2 kg zinc hydrate, 2.3 kg of sodium hydroxide and 60 kg of calcium acetate are added.

From the containers 11 and 13, their contents are transferred continuously and in a ratio of 2: 1 by means of the pumps 1A and 15, respectively, at a metering rate of 100 kg / h in the heated reactor 16, which is provided with static Mi see lern ent s, ττο the Saponification takes place at 90 ⁰ C- The exiting reaction mixture is in a Ro-

2 ο

station evaporator 17 a with 1.3 m area and 160 C jacket temperature temperature in which the '.Yasser is completely evaporated.

The anhydrous emerging at the bottom of the film evaporator 17 Fat base becomes with a punroe in one with static The heat treatment device 18 provided with elements, pumped. In the first section, a mineral oil component is also added to the fat base, which was previously added still provided with the required amount of additives became.

■ In the '.Värsebehandlungseinrichtung 18 the fat

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heat-treated under continuous feed and continuous Hezirkulation at 220 ⁰ C. The 7färmebeh from the ^e ndlungsvorrichtung 18 continuously at a rate of 100 kg / h discharged amount of fat is passed in the equipped with static mixing elements cooler 19, where it is cooled to 30-80 ⁰ C and continuously packaged. In addition, the consistency of the fat is adjusted and homogenized in the cooling device 19.

TO example 2

In the one provided with the Hührer 10, as a duplicator trained container 11 are pumped 315 kg lubricating oil component, introduced the solution of 2.3 kg of sodium hydroxide in 20 liters of water, 0.06 kg of antifoam. That Mixture is heated to 70-80 C and then with 6.6 kg aluminum distearate, 55 »2 kg of stearic acid, 7.2 kg of calcium hydroxide and 60 kg calcium acetate added.

Under pre recessed means of the pump 14 constant recirculation of the prepared suspension is ax a rate of; 230 kg / h in the ulisch- with static • reactor equipped elements 16 fed, at 90 ⁰ C where the soap formation takes place. The exiting heat sink is passed into the film evaporator 17 mentioned in Example 1, where the water contained in it is freed.

The subsequent treatment of the fat with the necessary The lubricating oil component containing additives is applied to the in 3 Example 1 described manner.

Example 3

In the first section of a heated, pressurized reactor 20 provided with static elements, 180 kg / h of lubricating oil components of 30-4-0 C '' temperature are pumped from storage containers (not shown in the drawing) and in the second section 90 ⁰ C 4-6 kg / h 12-Hydroxystear inäur e introduced.

After in the first and second section of the Hohrreaktors

Heated 20, the 'oil and the 12-hydr oxy stearic acid at 90 ⁰ C

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- 19 -

becomes 40 ^ ige at the beginning of the third section - Aqueous lithium hydride solution at a rate of 23-4 kg / h admitted. Soap formation takes place in the last section of the

Bohrrealetors 20 took place.
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The reaction mixture is fed into the "heated rotary evaporator 17, from which the water content in J? Orm escape of steam. At the bottom of the film evaporator 160 ⁰ C heat fat base and exits by means of the pump with

TO static mixing elements provided heatable heat treatment device 18 transferred. In the heat treatment device 18, at the point of entry from a storage vessel not shown in the drawing, 200 kg / h of lubricating oil components are continuously added. In the Wäraebehandlungsvorrichtung 18 takes place under constant Hezirkulation at 180-210 ⁰ C, the dissolution of the soap in the oil. In addition to the Pert emerging continuously from the heat treatment device 18 in an amount of 430 kg / h, the required additional amount of cold oil is added!

component headed. The fat is learned in the static mix containing cooling device 19 homogenized. From the cooler 19 the finished oil emerges and is stored in a packaging machine not shown in the figure .

ORIGINAL INSPECTED

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Claims (1)

HOFFMANN '. EITLE * & PARTNER PATENT AND LAWYERS PATENTANWÄLTE DIPL.-ING. W. EITLE. DR. RER. NAT. K. HOFFMANN - DIPL.-ΙΝβ. W. LEHN DIPL.-1NG. K. FOCHSLE DR. RER. NAT. B. HANSEN · DR. RER. NAT. HA. BRAUNS DIFL.-1NG. K. GORG DIPL.-ING. K. KOHLMANN ■ LAWYER A. NcTTE 38 859 1. MTA Müszaki Kemiai Kutato Intezet, Veszprem / Hungary 2. Komäromi KÖolajipari Vällatat ^ Komärom / Hungary Process and apparatus for continuous production of grease Claims M.JProcess for the continuous production of ■ •. • Lubricating greases, in the course of which oil, glycerides and / or Fatty acids and / or oxidized paraffin and / or Cxyfatty acids and / or other additives in a mixture, dispersed and saponified, the reaction mixture is dehydrated and / or desolvated and the Pett base obtained under Stirring in a heat treatment device - if necessary with the addition of further oil components and / or other Additives - if necessary, cooled while dispersing and is homogenized, thereby g e k e η η ζ eichnet that the material flows of the components of the starting mixture separated from each other and / or combined and optionally preheated once or repeatedly in a reactor forming a static mixing unit, then the dehydrated one Fat base after adding the oil component in a heated, COPY _BA D ORIGINAL n.onnn another static hole unit forming heat treatment device and finally the mass, if necessary after the addition of further Cl components and / or other additives, in one that also forms a static table unit Cooling device as a material flow or as several parallel and rectified material flows leads, thereby the speed of the material flow (the material flows) constantly in opposite senses changes, with one in individual sections of the speed change the media flowing in at least two roughness parts separated from one another by a partition wall with one another brings into contact, optionally one or more media set in flow with one or more streams of material, thereby changing the sighting of the material flow and increasing it dispersed and saponified in this way in the reactor, in the heat treatment device (the dehydrated fat base maintaining their temperature, with single or repeated, at least partial recirculation) the fat structure forms and in the cooling device cools the fat, homogenizes it and adjusts its consistency. BAD ORIGINAL ORIGINAL INSPECTED COPY 3 j ζ 4 ι d ö 2. The method according to claim. 1, characterized in that that in the static MiseR units, in or in several of their material flows, at least in part of the Section of the alternately opposing speed changes one that deviates from the main flow direction running in the axial direction, in the extreme case from this an approximately right-angled flow is generated. 3 · Method according to claim. 2, characterized in that -10 is generated in the static iJischeinheit the deviating in the axial direction, in the extreme case approximately perpendicular to this running material flow at the end of the oppositely alternating section and / or thereafter.
15th 4. The method according to any one of claims 1-3 »thereby characterized that one is in the static Lüeinheit the material flow in the direction of flow deviating from the main direction, in the extreme case approximately radially by means of the Partitions subjected to a forced flow. 5. The method according to any one of claims 1-4, characterized in, that in the static mixing units in the individual sections of the speed change the material flows through continuous interruptions in the partitions contacted each other. 6. The method according to any one of claims 1-5 »characterized in that that in the static Liischeinheit the separated by -Irennwar.de, running in parallel ^ aterial streams at the discontinuities of the dividing walls by means of the edges of the opposite to the flow Partition walls at the same time or against each other in the direction of flow shifted into partial flows.
35 7. The method according to any one of claims 1-6, characterized characterized in that the static mixing units parallel running material flows through (in flow COPY ORIGINAL INSPECTED BAD ORIGINAL direction) behind the discontinuities of the dividing walls, opposite to the flow, the beginning of the next partition forming and "offset from the end of the previous partition by a certain angle Edges are divided into Telstrom'me. 8. Device for the continuous production of lubricating greases by means of the method according to one of claims 1-7, consisting of containers for the starting materials, Hührorganen, a heated saponification reactor, a dehydration and / or desolvation system, a heated vtfärmebehandlungseinrichtung and a cooling and H ' Homogenization device, characterized in that its heated saponification reactor (16, 20), its .Värmebehandlungseinrichtung (18) and its cooling device (19) are each designed as a static mixing unit in which one or more boundary walls (1) and partitions around the axis (2) are present, and the partition walls (2) with the longitudinal axis and / or with in the direction of a 3-level (ab) laid through the longitudinal axis or with delimiting walls (1) running around the longitudinal axis at least in part alternating acute and obtuse angles (2 ) zusa mm en Abgrenzwänden with (1) a longitudinal axis in the direction of at least partly consisting of alternating ". further and again narrowing murmurs (I-VIII) existing space. 9. Device according to claim 3, characterized in that the static mixing units have dividing walls (2, 3 »4 ·) in their interior, which with the longitudinal axis or a previously determined plane running through it (ab) or with να the longitudinal axis running around the boundary walls (1) alternately pointed and blunt Include angles.
35 10. Vorrichtu n g as claimed in claim 3 or 9, characterized in that daJ3 inside the static -. Iischeinheiten with BAD ORlGlN ^AL COPY ORIGINAL INSPECTED Discontinuities (5) provided partition walls (2) are arranged. 11 · Device according to one of claims 8-10, characterized in that inside the mixing unit helical partition walls (2) are arranged which alternate with acute and obtuse angles with the longitudinal axis, enclose a continuously changing angle with a 3-plane (a-b) laid through the longitudinal axis. 12. The device according to claim 11, characterized in that one another inside the static mixing units following oppositely screwed '! partition walls (2) are arranged. 15 · Device according to one of claims 8-12, characterized characterized in that, inside the static fish units, the partition (2) following the 3nd of a partition (2}) is offset by a certain angle relative to the first 14. Device according to one of claims 8-13 »'thereby. gel draws in that inside the static;.; i see inhe it en partially self-contained, a certain part of the head enclosing partitions (7) are arranged. 15. Device according to claim 14, characterized in that that the inside of the static mixing units arranged, with the longitudinal axis and / or a predetermined, through the longitudinal axis 3-plane (a-b) or with the boundaries running around the longitudinal axis (1) At least in part alternately pointed and blunt Prong1 enclosing partitions (2) from opposing pointed or obtuse angles enclosing narrowed and widening hem parts forming self-contained I-rar: nwalls £. (7) be crossed. ORIGfNAL INSPECTED! COPY ^BAD ORIGINAL