DE102010037674A1 - Rotor pulsation device for use as homogenizer for treating oil in e.g. ships, has rotor cavities arranged in periphery of panel, and feed channel formed in drive shaft for connecting inlet hole with working chamber - Google Patents

Abstract

The device has a circular cavity (10) with nozzles (11) and a ring drainage canal (12), and a disk piston (13) rigidly secured on a drive shaft (8) in a cabinet (1). Rotor cavities (14, 15) are rigidly secured in rotors (5, 6), where each rotor cavity is formed as a cylinder with constant slots. Each rotor is formed as a panel (18) with two radial acceleration channels (19). The rotor cavities are arranged in a periphery of each panel, and a feed channel (21) is formed in the drive shaft for connecting an inlet hole (3) with a working chamber (7).

Description

The invention relates to a homogenizer for heavy fuels according to the preamble of claim 1.

The disclosed heavy fuel homogenizer relates to the field of mixers with rotary mixing equipment in stationary containers. The homogenizer can be used in the chemical, oil, food, pharmaceutical, energy and fuel industries, etc., for mixing, dispersing, homogenizing and mass transfer in homogeneous and heterogeneous systems, including for the preparation of heavy fuel oil for use on ships and in coastal operations.

From the patent RU 2124935 (B01F 5/06, B01F 7/10) a rotor pulsation device is known, which has a rotor and stator disc with toothed elements. The tooth elements are housed on alternating concentric circles.

The tooth elements are designed on the concentric circles with a shift. In this case, the distance between the neighboring tooth elements of a concentric circle is smaller than or equal to the width of the tooth element of the next concentric circle in the peripheral direction. The tooth elements of one or more circles of the rotor or stator are shifted to a distance which ensures an overlap of a continuous section between the tooth elements of the neighboring pair of concentric circles of the rotor and stator in the open state of the continuous section of each pair of neighbors.

Furthermore, from the RU 331811 (B01F 11/02) discloses a rotor pulsation device for easy fluid system conditioning comprising stators with a set of coaxial cylinders with slots and a rotor in the form of a disk. On both sides of the disc coaxial cylinders are attached with slots. The slots are located between the cylinders of the stators. The disc has openings and radial wings which are fixed on both sides.

The disadvantage of the mentioned devices consists in a relative inhomogeneity of the treated substance, in its high viscosity at the outlet of the homogenizer, d. H. in a low quality of homogenization in particular heavy fuel oils containing asphalts.

From the Swiss patent 372537 (Kl 50 c, 18/01, 1963) is also known a rotor pulsation device in which the fluid is treated with two rotors which rotate in opposite directions. The apparatus has a housing, a cover of the housing, inlet and outlet openings, two rotors housed axially and oppositely in the housing, which form a working chamber therebetween and which rotate in opposite directions to each other. Each rotor has its own drive shaft.

Particularly close to the disclosed invention, said rotor pulsation device is in terms of its function, the technical nature and the technical result achieved.

The disadvantage of said device consists in a relative inhomogeneity of the treated material, in its high viscosity at the outlet of the homogenizer, d. H. in a low quality of homogenization in particular heavy fuel oils containing asphalts.

It is an object of the invention to further develop the construction of a homogenizer so that it makes it possible to ensure a higher quality of the final product, which is characterized by its homogeneity and viscosity. This is particularly relevant nowadays for heavy fuel oils containing asphalts on ships and in coastal industries.

The stated object is solved by the features of claim 1.

The stated object is achieved by developing the disclosed homogenizer for heavy fuels. The homogenizer has a housing, a cover of the housing, an inlet and outlet opening and two rotors. The rotors are arranged axially and opposite to each other. Two rotors form a working chamber in between. The rotors rotate in opposite directions. Each rotor has its own drive shaft. The homogenizer is equipped with a ring cavitator with nozzles and an annular drainage channel and a disc piston with rotor cavitators. The disc piston is rigidly attached to one of the drive shafts in the homogenizer housing. The rotor cavitators are each fixed rigidly in the rotor. Each of the rotor cavitators is formed in the form of a cylinder with continuous slots in the form of windows on the wall. Each rotor is designed in the form of a disk with two radial acceleration channels. At the periphery of the disc in each case two cavitators of an acceleration channel are arranged. In one of the drive shafts, a supply channel is formed, which connects the inlet opening with the working chamber.

• – Rotationsvorrichtung, die in Form von einem Homogenisator für schwere Brennstoffe ausgebildet ist,
• – mit einem Gehäuse
• – mit einem Deckel des Gehäuses,
• – mit Eintritts- und Austrittsöffnungen,
• – mit zwei axial und entgegengesetzt zu einander
• – untergebrachten Rotoren,
• – die dazwischen eine Arbeitskammer bilden,
• – die in entgegengesetzte Richtungen drehen,
• – wobei jeder Rotor mit einer eigenen Antriebswelle versehen ist.

The general essential features of the invention particularly close to the invention The rotor pulsation device and the registered heavy fuel homogenizer are as follows:

• Rotating device, which is in the form of a heavy fuel homogenizer,
• - with a housing
• With a cover of the housing,
• - with inlet and outlet openings,
• - with two axially and opposite to each other
• - housed rotors,
• - which form a working chamber in between,
• - turning in opposite directions,
• - Each rotor is provided with its own drive shaft.

• – der Homogenisator umfasst einen Ringkavitator
• – mit Düsen
• – und mit einem Ringabflusskanal,
• – einem Scheibenkolben,
• – der auf einer der Antriebswellen im Homogenisatorgehäuse starr befestigt ist,
• – mit Rotorkavitatoren,
• – die jeweils im eigenen Rotor starr befestigt sind,
• – die in Form von einem Zylinder
• – mit durchgängigen Schlitzen in Fensterform auf dessen Wandung ausgebildet sind,
• – wobei jeder Rotor in Form einer Scheibe
• – mit radialen Beschleunigungskanälen ausgebildet ist,
• – wobei die Peripherie der Scheibe mit zwei Kavitatoren des Beschleunigungskanals ausgestattet ist,
• – in einer der Antriebswellen ist ein Zufuhrkanal ausgebildet, der die Eintrittsöffnung mit der Arbeitskammer verbindet.

Essential features that distinguish the disclosed heavy fuel homogenizer from the prototype:

• - The homogenizer comprises a ring cavitator
• - with nozzles
• - and with a ring drainage channel,
• - a disc piston,
• - Is rigidly mounted on one of the drive shafts in Homogenisatorgehäuse,
• - with rotor cavitators,
• - Which are rigidly fixed in their own rotor,
• - in the form of a cylinder
• Are formed with continuous slots in the form of windows on the wall,
• - Each rotor in the form of a disc
• Is formed with radial acceleration channels,
• - Wherein the periphery of the disc is equipped with two cavitators of the acceleration channel,
• - In one of the drive shafts, a supply channel is formed, which connects the inlet opening with the working chamber.

The execution of the disclosed invention with the aforementioned generality of features and with essential features that distinguish the invention from the prototype, has made it possible to increase the viscosity of the treated heavy fuel oils containing asphaltic resins from 10 ° Engler (conventional viscosity unit) 7 ° Engler degree to reduce. It also made it possible to improve the homogeneity of the fuel oils at the outlet. These improvements are possible because the ripple of the high velocity flow is performed simultaneously with turbulization. The homogeneity is achieved by a constant change of the direction and the speed of the flow of the processed material.

The invention will be explained in more detail with reference to an embodiment shown in the drawings. Show it:

1 the elongated section of the declared heavy fuel homogenizer,

2 Section AA of the declared heavy fuel homogenizer,

3 the cavitator of the rotor and

4 the section BB of the cavitator of the rotor.

• – mit einem Ringkavitator 10 mit Düsen 11 und
• – einem Ringabflusskanal 12,
• – einem Scheibenkolben 13, der an der Antriebswelle 9 im Homogenisatorgehäuse 1 starr befestigt ist,
• – mit Kavitatoren 14 des Rotors 5 und
• – Kavitatoren 15 des Rotors 6, die jeweils im Rotor starr befestigt sind,
• – ausgestattet.

The disclosed heavy fuel homogenizer has a housing 1 , a lid 2 of the housing 1 , an entrance opening 3 , an exit opening 4 , a rotor 5 and a rotor 6 which are arranged axially and opposite to each other. Two rotors 5 and 6 form a working chamber in between 7 , The rotors 5 and 6 turn in opposite directions. The rotor 5 is with a drive shaft 8th , the rotor 6 with a drive shaft 9 fitted. Here is the homogenizer

• - with a ring cockpit 10 with nozzles 11 and
• - a ring drainage channel 12 .
• - a disc piston 13 that is attached to the drive shaft 9 in the homogenizer housing 1 is rigidly attached,
• - with cavitators 14 of the rotor 5 and
• - Cavitators 15 of the rotor 6 , which are each rigidly fixed in the rotor,
• - fitted.

The cavitators 14 and 15 are each in the form of a cylinder 16 with continuous slots 17 formed in the form of windows on the wall. Every rotor is here 5 and 6 in the form of a disk 18 with two radial acceleration channels 19 educated. At the periphery of the disc 18 each are two cavitators 20 of the acceleration channel 19 arranged. In the drive shaft 8th is a supply channel 21 formed, which the entrance opening 3 with the working chamber 7 combines.

The disclosed heavy fuel homogenizer functions as follows:
The heavy fuel oil containing asphalts is M100 fuel oil with a viscosity of 10 ° Engler-grade after filtering in a separator through the inlet 3 over the supply channel 21 in the working chamber 7 introduced. The fuel is due to the centrifugal force caused by the rotation of the disc piston 13 arises on the periphery of the working chamber 7 thrown into the zone of the first stage of homogenization. The first stage of homogenization of the fuel is by the rotors rotating in opposite directions 5 and 6 by means of the cavitators 14 and 15 , Thereafter, the fuel is due to the centrifugal force to the periphery of the discs 18 via the acceleration channels 19 and the cavitators 20 in the zone of the second stage of homogenization spun. Here comes another homogenization under the effect of a turbulent pulsation of the speed of the fuel flow. The third stage of homogenization occurs through cavitation processes when the fuel passes through the cavitators 11 of the Ringkavitators 10 flows. So is the processed fuel through the ring drainage channel 12 over the exit opening 3 led to the consumers.

After multiple experimental observations, it has been found that M100 heating oil contains finer asphaltene resin structures and smaller water particles compared to the untreated (initial) product after processing in the disclosed heavy fuel homogenizer. In addition, the viscosity of the heating oil M100 is reduced after the preparation of 10 ° to 7 ° Engler degree.

The implementation of the disclosed invention has made it possible to achieve the pending technical result. Ie. reduce the viscosity of treated heavy fuel oils containing asphaltic pitches from 10 ° to 7 ° Engler grade and improve the homogeneity of fuel oils at the outlet. This is possible because the ripple of the high-speed flow is performed simultaneously with the turbolization. The homogeneity is achieved by the constant change of the direction and the speed of the flow of the processed material.

To improve the homogenization is the number of cavitators 14 and 15 decisive. Therefore, the cavitators exist 14 and 15 from four, six or even eight rotors. The rotors are balanced after the construction of the cavitators.

It is also important that the drive shafts 8th and 9 well stored. For this purpose, at least three rolling bearings are used per drive shaft, which are preferably designed as ceramic plain bearings, which are lubricated with heavy fuels.

If the pipe outlet is provided with a pressure gauge and a pipe diversion, then the liquid can be passed over these devices and the process of the rotor pulsation device can be monitored.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• RU 2124935 [0003]
• RU 331811 [0005]
• CH 372537 [0007]

Claims (7)

Rotor pulsation device in the form of a homogenizer for heavy fuels with a housing ( 1 ), a lid ( 2 ) of the housing ( 1 ), an inlet and an outlet ( 3 and 4 ), as well as two rotors ( 5 and 6 ), the rotors ( 5 and 6 ) are arranged axially and opposite to each other and between a working chamber ( 7 ), and wherein the rotors ( 5 and 6 ) in opposite directions, each rotor ( 5 and 6 ) a separate drive shaft ( 8th and 9 ), characterized in that the homogenizer - with a Ringkavitator ( 10 ) with nozzles ( 11 ) and an annular drainage channel ( 12 ), - with a disc piston ( 13 ) mounted on one of the drive shafts ( 8th or 9 ) in the homogenizer housing ( 1 ) is fixed rigidly, - with rotor cavitators ( 14 and 15 ), each in the rotor ( 5 and 6 ) are fixed rigidly and in the form of a cylinder ( 16 ) with continuous slots ( 17 ) are formed in the shape of a window on the wall thereof, each rotor ( 5 and 6 ) in the form of a disk ( 18 ) with two radial acceleration channels ( 19 ) is formed, that at the periphery of the disc ( 18 ) two cavitators each ( 14 and 15 ) of the acceleration channel ( 19 ) are arranged and that in one of the drive shafts ( 8th ) a supply channel ( 21 ) is formed, which the inlet opening ( 3 ) with the working chamber ( 7 ) connects. Rotor pulsation device according to claim 1, characterized, that the ripple of the high-speed flow is performed simultaneously with a turbolization. Rotor pulsation device according to claim 1, characterized, that the homogeneity of the processed material is achieved by a constant change in the direction and the speed of the flow. Rotor pulsation device according to claim 1 to 3, characterized, the viscosity of the treated heating oils with asphalt resins is reduced from 10 ° to 7 ° Engler (conventional viscosity unit). Rotor pulsation device according to claim 1 to 4, characterized in that to improve the homogenization, the cavitators ( 14 . 15 ) consist of four, six or eight rotors, which are balanced after construction. Rotor pulsation device according to claim 1 to 5, characterized in that the drive shafts ( 8th . 9 ) but at least three rolling bearings, preferably ceramic plain bearings, are stored, which are lubricated with heavy fuels. Rotor pulsation device according to claim 1 to 6, characterized, that at the pipe outlet, the liquid is passed through a pressure gauge and a pipe bypass.

Images