Method of conditioning liquid hydrocarbon and a device for its implementation

 

(57) Abstract:

Air conditioning hydrocarbon liquids before fractionation is performed by means of mechanical vibrations, involves feeding a liquid into the cavity of the impeller, the release of liquid in the annular chamber formed by the impeller and the stator, through a series of outlet openings of the impeller and the outlet fluid from the annular chamber. In such cases, the empirical correlation of R=(1,05-1,28), mm, R = (1,05-1,28)In mm and n=(3,6-4,1)-1,5106about. /min, where R is the radius of the peripheral surface of the impeller, R is the radial size of the annular n - rotational speed of the impeller, the number of output openings of the impeller, In - integer in the range 1-K/2. The invention improves the efficiency of the air conditioning process and subsequent fractionation of hydrocarbon liquids. 2 S. and 4 C. p. F.-ly, 4 Il., table 2.

The invention relates to a process for the preparation of hydrocarbon liquids to their further processing and directly relates to a method and device for pre-conditioning of hydrocarbon liquids prior to their subsequent fractionation produced by processing using mettupalaiyam and other industries, related to the technological processing of hydrocarbon liquids as a source of raw materials and intermediate products. Pre-conditioning according to the invention can be, in particular, crude oil prior to distillation, the oil before re-distillation or cracking of the gas oil prior to catalytic cracking, naphtha before reforming, etc., and synthetic hydrocarbon fluid in front of the respective treatment.

In the prior art well-known methods of pre-conditioning liquid hydrocarbon feedstock prior to its subsequent fractionation produced by treatment with mechanical impact, in particular, by pre-filtering, dehydration, desalting, etc., This treatment facilitates subsequent fractionation, but has no effect on the physico-chemical properties of the original hydrocarbon raw materials or semi-products and hence the yield of light fractions.

For example, it is known a device for preparing oil emulsion to further processing (USSR author's certificate N 986475 from 1980), contains a rotor with impeller made in the form of di which ranks the impeller wall with a number of holes, attached with a minimum clearance to the peripheral annular wall of the impeller, the inlet opening for flow of the treated fluid into the cavity of the impeller and an outlet opening for removal of the treated liquid.

During the rotation of the impeller the fluid intermittently flowing through the holes therein and concentric with the wall of the stator is subjected to forced mechanical vibrations of sound frequency, depending on the frequency of rotation of the impeller and the number of its outlets. This achieves a certain conditioning of the treated hydrocarbon liquid, but the yield of light products subsequent fractionation remains at a normal level.

In the prior art there is also known a method of conditioning a hydrocarbon liquids by means of mechanical impact (international application WO 94/10261 from 11.05.94, the closest equivalent), including the submission to be processed liquid in the cavity of the first of several rotating wheels; the release of the treated fluid from the cavity of the impeller through a number of output holes, evenly spaced on its periphery an annular surface; an inlet treated water in prosym clearance to the peripheral annular surface of the impeller; the removal of the treated liquid from the cavity of the stator and its flow into the cavity of the next impeller, and so on; the diversion of treated fluid from the outlet of the stator.

Device to perform the described known method of conditioning a hydrocarbon liquids includes a rotor including mounted in bearings shaft and several mounted thereon wheels, each of which is made in the form of a disk with a peripheral annular wall that has a number of outlets for the treated fluid, uniformly distributed over the circumference; the stator having concentric with each of the impellers walls, each of which has a number of apertures for the passage of the treated liquid in the cavity of the stator, an inlet opening for flow of the treated fluid communicated with the first cavity of the impellers, and the outlet for removal of treated liquid from the cavity of the stator; means for bringing the rotor into rotation. While peripheral annular wall of the impeller adjacent to the respective concentric with the walls of the stator with the minimum technically feasible gap.

Describes the known method and device for air-conditioning the x concomitant or subsequent fractionation increases the yield of the most valuable of light fractions. However, the potential of such a fractionation of hydrocarbon liquids used here insufficient for the, in particular, the reason that the analogue is not important to select the optimum ratios of the main process parameters and the implementing device, such as the radius of the peripheral annular surface of the impeller, the frequency of rotation and the number of output holes.

The present invention is directed to solving the problem of creation on the basis of the prior art, and his own studies of this method of conditioning a hydrocarbon liquids and device for its implementation, which would affect the physico-chemical properties of hydrocarbon fluids such an optimal way to increase the efficiency of their air conditioning and thereby possible to raise the yield of the most valuable light products fractionation.

This problem is solved according to the invention by treating liquids by means of mechanical impact on the process of rotational motion with a certain linear velocity at a certain radius of rotation with a superimposed oscillatory process the Oia between the number of output holes on the peripheral surface of the impeller, on the one hand, and the radius of this surface, as well as the frequency of rotation of the impeller, on the other hand.

For this purpose, the proposed method of conditioning, as known, are filing to be processed liquid in the cavity of the rotating impeller; the release of the treated fluid from the cavity of the impeller through a number of output holes, evenly spaced on its peripheral surface; a drain of at least one exhaust hole of the stator. According to the basic embodiment of the invention, the release of liquid from the cavity of the impeller is carried out in an annular chamber formed in its peripheral surface and the concentric surface of the stator, and the radius R of the peripheral surface of the impeller and the frequency of rotation n set depending on the selected number To the outlet openings of the impeller according to the empirical relations

R = (1,05 - 1,28), mm, and

n = (3,6 - 4,1)-1,5106about./minutes

Outside the specified ranges of parameters the effect of the conditioning fluid, as determined experimentally, is expressed sufficiently.

In the most preferred Wapiti from the selected number To its outputs according to the empirical relations

R = 1,1614 K, mm, and

n = 3,8396 TO-1,5106about./min

In another preferred embodiment of the method of conditioning the removal of treated liquid from the annular chamber formed by the peripheral surface of the impeller and the concentric surface of the stator, are carried out through a number of outlets evenly spaced in a concentric surface of the stator, which during the rotation of the impeller are consistently against its outputs.

In the above main embodiment of the method of conditioning a hydrocarbon liquids in the above mentioned ranges of the choice of the parameters R and n are fundamentally achieved such influence on the physico-chemical properties of the liquid, which in its subsequent fractionation of the yield of the most valuable low-boiling fractions is increased to such an extent that it is permissible to speak about effective practical use. This effect can be explained, without claiming to be exhaustive analysis of the internal physico-chemical processes, destructive transformation of the internal connections on the molecular level, initiating the proceedings under the influence of mechanical vibrations on a rotating liquid at certain frequencies azannyh nominal values of the parameters R and n, established experimentally, the effect of conditioning manifests itself most strongly. Another preferred embodiment of the method of conditioning can improve the effect due to the combined vibrational effects on the first liquid when it enters through the openings of the impeller in the annular chamber, and then when it exits from the annular chamber through the holes on the concentric surface of the stator.

The method of conditioning a hydrocarbon liquids according to the invention can be carried out only by using the following device, which is an integral part of the General inventive concept.

Device for conditioning a hydrocarbon liquids, as known, includes a rotor including mounted in bearings shaft and at least one United with the shaft the impeller is made in the form of a disk with a peripheral annular wall, which made a number of outlet openings for the liquid, uniformly distributed over the circumference; a stator concentric with the impeller wall, an inlet opening for the fluid, communicated with the cavity of the impeller, and at least one exhaust otverstiyami invention concentric with the wall of the stator forms together with the peripheral annular wall of the impeller annular chamber, communicated with at least one hole for drainage, and the radius R of the outer surface of the peripheral annular wall of the impeller is

R = (1,05 - 1,28), mm ,

where K is the selected number of output openings of the impeller and the radial dimension R of the annular chamber is

R = (1,05 - 1,28) mm,

where B is a selected integer in the interval 1.../2.

In the most preferred embodiment of the device for conditioning the radius R of the outer surface of the peripheral annular wall of the impeller is nominally

R = 1,1614 K, mm,

where K is the selected number of output openings of the impeller and the radial dimension R of the annular chamber is nominally

R = 1,1614 mm,

where - selected integer in the interval 1/5.

In another preferred embodiment of the device for conditioning the stator has a cavity for receiving fluid from the annular chamber provided with an outlet hole for drainage, and concentric with the wall of the stator evenly spaced around the circumference in the plane of arrangement of the outlet openings of the impeller made a number of outlets reporting the cavity of the stator with an annular chamber, the number of Colorline, illustrated with schematic drawings, on which:

Fig. 1 is a longitudinal axial section of the device for air conditioning in the main and the most preferred embodiments;

Fig. 2, 4 is a partial cross section of the annular chamber;

Fig. 3 is a longitudinal axial section of the device for air conditioning in one of the preferred embodiments.

According to the basic embodiment (Fig. 1, 2) method of conditioning a hydrocarbon fluid by using mechanical action to be processed liquid is supplied into the cavity 1 of the rotating impeller 2 through the inlet 3. During rotation of the impeller 2 of the processed liquid is discharged from cavity 1 in the annular chamber 4 formed in the peripheral cylindrical surface 5 of the impeller 2 and concentric with the surface 6 of the stator 7, through a series of outlet openings 8 located on the peripheral surface 5 of the impeller 2 and uniformly distributed around the circumference. Within the annular chamber 4 of the processed liquid, continuing the rotation about the Central axis 9, by law, free flow, is subjected to mechanical vibrations caused by the interaction with to the I 8 of the impeller 2. The treated fluid from the annular chamber 4 through the outlet 10.

The radius R of the peripheral surface 5 and the rotational speed n of the impeller 2 are determined by the selected number To its output holes 8 in the range according to the following empirical relations

R = (1,05 - 1,28), mm, and

n = (3,6 - 4,1)-1,5106about./minutes

According to the most preferred embodiment of the method of conditioning the radius R and the rotational speed n of the impeller 2 is nominally determined by the selected number K of its outputs according to the empirical relations

R = 1,1614 K, mm, and

n = 3,8396 TO-1,5106about./minutes

According to another preferred embodiment (Fig. 3, 4) method of conditioning the removal of treated liquid from the annular chamber 4 formed by the peripheral surface 5 of the impeller 2 and concentric with the surface 6 of the stator 7, through one, several or a number of outlet openings 11 in concentric surface 6 of the stator 7. These outlet openings 11 of the annular chamber 4 during the rotation of the impeller 2 are consistently against the outlet openings 8, causing periodic perturbation of the flow and with the ring 11 of the chamber 4, the liquid flows into the cavity 12 of the stator 7, whence it is discharged through the outlet 13.

The number of the exhaust holes 11 of the annular chamber 4 is selected in the range from one to To take into consideration that with the increase in the number of outlets 11 ceteris paribus adequately increases the volumetric efficiency of the process, but decreases the degree of conditioning.

According to the basic embodiment (Fig. 1, 2) of an apparatus for implementing the described method of conditioning it contains the rotor 14 includes a shaft 15 mounted in bearings 16 and 17 and provided with a seal 18. The rotor 14 includes at least one impeller 2, United with the shaft 15 and is made in the form of a disk 19 with a peripheral annular wall 20 having a cylindrical outer surface 5. This wall 20 is made of a set of output holes 8 for liquid, evenly distributed around the circumference.

The stator 7, which accommodates the impeller 2 has an inlet 3 for the supply of liquid to the processing and outlet 10 for removal of the treated liquid. Cavity 1 impeller 2 for the reception to be processed fluid is formed by a disk 19 and the annular wall 20 of the impeller 2, and in this case adjacent icena in the radial direction of the annular wall 20 of the impeller 2 and the concentric wall 22 of the stator 7 and communicated with the exhaust hole 10 for removal of the treated liquid.

The characteristic geometrical dimensions of the impeller 2 and the annular chamber 4 are

R = (1,05 - 1,28), mm, and

R = (1,05 - 1,28) mm,

where K is the selected number of output holes 8 of the impeller 2;

R is the radius of the outer surface 5 of the peripheral annular wall 20 of the impeller 2;

In - selected integer in the interval 1 - K/2,

R is the radial size of the annular chamber 4.

In the most preferred embodiment (Fig. 1, 2) device for conditioning the nominal value of the radius R is

R = 1,1614 K, mm,

and the nominal radial size R is

R = 1,1614 B, mm,

where - selected integer in the interval 1 - K/5.

According to another preferred embodiment of /Fig. 3, 4/ device for conditioning the stator 7 has a cavity 12 adjacent to its concentric wall 22, for receiving fluid from the annular chamber 4 is communicated with the exhaust hole 13 for removal of the treated liquid. The cavity 12 of the stator 7 is communicated with the annular chamber 4 outlet holes 11 for the release of fluid from the annular chamber 4 and at the same time to its intake into the cavity 12 of the stator 7 is performed in concentric wall 22 of the stator 7. These outlet openings 11 are the number of holes 11 is from one to K, and their number is greater than To, it is impractical due to the significant reduction, ceteris paribus, the effect of conditioning.

The rotor 14 is connected by means of shaft 15 and the coupling 23 with means to drive the estimated rotational speed, for example, by an electric motor 24.

The rotor may contain more impellers mounted on the same shaft as that for the fluid flow are connected in series. Each impeller may be equipped with blades.

Cast impellers during rotation can be performed on specifically designed for the purpose of the engine (electric, hydraulic, mechanical, wind and others), and from mobile and especially rotating parts vehicles for delivery of hydrocarbon liquids.

There may be both internal and external by-pass channel with shut-off and regulating body for the reverse flow of the treated fluid to exit the device at its input for re-processing.

The whole device may take any spatial position.

The number To the outlet openings 8 of the impeller 2 is selected based on the desired frequency F you the solution

F = 63,993 K-0,5, kHz,

with regard to achievable and appropriate geometric dimensions of the device as a whole.

The value of B is selected in the above range, depending on the physical properties of the treated fluid, particularly its viscosity and changes in viscosity when heated, taking into account acceptable geometric dimensions of the unit as a whole.

The list of species of the treated fluid is quite wide - natural and artificial hydrocarbon and silicone fluids, and all sorts of solutions, emulsions and suspensions based on them, in a wide range of viscosity and other physical-chemical properties.

The choice of the number of holes 11 for the release of fluid from the annular chamber 4 is made depending on the desired ratio of the volumetric performance of the device and an acceptable degree of conditioning.

The width of the holes 8 of the impeller 2 in the circumferential direction on its peripheral surface 5 is preferably half of their district step on the circle of radius R. the Width of the outlet 11 of the annular chamber 4 in the circumferential direction on its concentric surface 6, regardless of their number is melting in the direction parallel to the Central axis 9, the shape of the holes 8 and 11, as schematically depicted in Fig. 3.

Device for conditioning a hydrocarbon liquids according to the invention operates as follows.

Mainly and most preferred embodiments of the device (Fig. 1, 2) of the processed liquid is supplied through the inlet 3 into the cavity 1 of the impeller 2 in the direction shown by the arrow. The rotor 14 together with the impeller 2 is driven by an electric motor 24 through the sleeve 23 and the shaft 15 with the calculated rotational speed n. At the same time entering into the cavity 1 of the impeller 2, the fluid under pressure released from the cavity 1 through the number of the outlet openings 8 in the peripheral annular wall 20 of the impeller 2, acting in the annular chamber 4, a limited annular wall 20 of the impeller 2 and the concentric wall 22 of the stator 7. From the annular chamber 4, the treated liquid is removed for further processing or re-processing through the outlet 10 of the stator 7 in the direction shown by the arrow.

In another preferred embodiment of the device (Fig. 3, 4) is the same as above, except that from the annular chamber 4 are processed. the C cavity 12 of the treated liquid is removed for further processing or re-processing through the outlet 13 of the stator 7 in the direction shown by the arrow.

It is possible to integrate relevant to the invention process and equipment in the traditional technological chain fractionation rational combination of operations pumping hydrocarbon liquids between technological positions.

In table. 1 and 2 shows specific examples of practical implementation of the invention, a method of conditioning (the term "conditioning" refers to the giving of the processed raw materials physico-chemical properties, favorable from the point of view of its further processing) hydrocarbon liquids and devices for its implementation.

1. The method of conditioning a hydrocarbon liquids by mechanical impact, including the submission to be processed liquid in the cavity of the rotating impeller, the release of treated liquid from the cavity of the impeller through a number of output holes, evenly spaced on its peripheral surface, draining at least one outlet article is organised its peripheral surface and the concentric surface of the stator, moreover, the radius R of the peripheral surface of the impeller and the frequency of rotation n set depending on the selected number K of the outlet openings of the impeller according to the empirical relations

R = (1,05 - 1,28) K, mm, and

n = (3,6 - 4,1) K-1,5106, rpm

2. The method according to p. 1, characterized in that the parameters R and n are nominally set depending on the parameter K according to the empirical relations

R = 1,1614 K, mm, and

n = 3,8396 K-1,5106, rpm

3. The method according to p. 1 or 2, characterized in that the outflow of fluid from annular carried out through a number of outlets evenly spaced in a concentric surface of the stator, which during the rotation of the impeller are consistently against its outputs.

4. Device for conditioning of hydrocarbon liquids by means of mechanical impact, which includes a rotor including mounted in bearings shaft and at least one United with the shaft the impeller in the form of a disk with a peripheral annular wall, which made a number of outlet openings for the liquid, evenly distributed around the circumference, the stator having concentric with the impeller is an outlet for discharge of liquid, means for driving the rotor with the calculated rotational speed, characterized in that the concentric wall of the stator forms together with the peripheral annular wall of the impeller annular chamber provided with at least one outlet opening for discharge of liquid, and the radius R of the outer surface of the peripheral annular wall of the impeller is

R = (1,05 - 1,28) K, mm,

where K is the selected number of output openings of the impeller and the radial dimension R of the annular chamber is

R = (1,05 - 1,28) B, mm,

where B is a selected integer in the interval 1 - K/2.

5. The device according to p. 4, characterized in that the radius R of the outer surface of the peripheral annular wall of the impeller is nominally

R = 1,1614 K, mm,

where K is the selected number of output openings of the impeller and the radial dimension R of the annular chamber is nominally

R = 1,1614 B, mm,

where B is a selected integer in the interval 1 - K/5.

6. The device under item 4 or 5, characterized in that the stator has a cavity for receiving fluid from the annular chamber provided with an outlet hole for drainage, and concentric with the wall of the stator evenly spaced around the circumference in the plane raspolozheniu stator, the number of which is 1 - K.

 

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