JP2001055585A - Treatment of petroleum and treating system thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for treating petroleum which enables recovery of a lot of value-added fractions having a boiling point lower than that of light oil by cracking a distillation residual oil under the normal pressure, thereby enables the economical and effective use of the distillation residual oil under the normal pressure, extremely simplifies a treating process and a treating system for an economical treatment of petroleum compared to a conventional process and a conventional system of discretely treating each distilled component by hydrogenating distilled oil under the normal pressure and low boiling point fractions obtained by cracking the distillation residual oil under the normal pressure at a time and to provide a treating system of petroleum having such a simple construction which can economically treat petroleum. SOLUTION: This method for treating petroleum comprises a process (A) of distilling crude oil under the normal pressure to separate the crude oil into distilled fractions under the normal pressure and a distillation residual oil under the normal pressure, a process (B) of cracking at least a part of the distillation residual oil under the normal pressure, a process (C) of separating the cracked compounds obtained by process (B) into low boiling point fractions and high boiling point fractions and a process (D) of hydrogenating the distilled oil under the normal pressure together with the low boiling point fractions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method and an apparatus for treating petroleum. Specifically, crude oil is subjected to atmospheric distillation to separate it into atmospheric distillate and atmospheric distillate residue, and the atmospheric distillate and the light fraction obtained by decomposing the atmospheric distillate residue. And a method and apparatus for treating petroleum.

[0002]

BACKGROUND OF THE INVENTION In conventional general petroleum refining, crude oil is subjected to atmospheric distillation in an atmospheric distillation apparatus, and separated into various fractions such as light gas, LPG, light naphtha, heavy naphtha, kerosene and light oil. After separation, each fraction is individually hydrogenated and desulfurized. In addition, in the case of vacuum distillation of atmospheric distillation residue produced by atmospheric distillation, vacuum gas oil, which is a distillate of vacuum distillation, is subjected to a separate hydrogenation treatment for desulfurization.

[0003] As described above, in the conventional petroleum refining method, each of the fractions such as light gas, LPG, light naphtha, heavy naphtha, kerosene and gas oil obtained by atmospheric distillation and reduced pressure gas oil are individually hydrogenated. Since each fraction can be processed under suitable conditions because it is refined by a processing unit such as a refiner, the equipment configuration of an oil refinery plant becomes complicated and large-scale, construction costs increase, and large facilities There was a problem that an area was required. Further, since it is necessary to individually control and maintain a large number of devices, there is a problem that control and maintenance are complicated and running costs are increased.

[0004] Further, such an oil production method is performed uniformly regardless of the amount of crude oil to be processed. Therefore, particularly when the amount of crude oil to be processed is small, the oil processing apparatus can be simplified and downsized. It is desired to reduce the cost of petroleum refining. On the other hand, the present applicant has proposed a method in which a distillate obtained by distilling crude oil under atmospheric pressure is subjected to hydrotreating in a single hydrotreating apparatus (Japanese Patent Laid-Open No. 7-825).
No. 73). According to this method, the configuration of the apparatus can be greatly simplified as compared with the case where a hydrotreating apparatus is provided for each fraction, construction costs and equipment area can be reduced, and maintenance can be performed collectively. Can be. This method is particularly useful when the throughput of crude oil is small.

On the other hand, the atmospheric distillation residue may be used as a fuel oil as it is, but since it is generally desired to obtain more light oil, the atmospheric distillation residue is distilled under reduced pressure to obtain a relatively light oil. 2. Description of the Related Art Conventionally, light vacuum gas oil and vacuum distillation residue are separated and used. In vacuum distillation of atmospheric distillation residue, usually, the atmospheric distillation residue is extracted, sent to a heating furnace by a pump, preheated to a vacuum distillation temperature by a heating furnace, and then introduced into a vacuum distillation unit where the pressure is reduced by a vacuum device. Then, the distillation is performed by a step of performing distillation under reduced pressure to obtain a reduced-pressure gas oil and a reduced-pressure distillation residual oil, which requires a large-scale apparatus configuration. When the obtained decompressed gas oil is subjected to hydrotreating and used, an apparatus for hydrotreating is separately provided, a facility for supplying hydrogen to the hydrotreating apparatus, a compressor for adjusting hydrogen pressure, It is necessary to provide a device for removing hydrogen sulfide that has been removed, and it is necessary to control these devices individually and perform maintenance separately.

[0006] For this reason, when the amount of crude oil to be treated is small, it is possible to effectively utilize the residual oil at normal pressure, further simplify the equipment configuration, and perform petroleum processing at low cost.
Development of a method and apparatus for treating petroleum has been desired.

[0007]

An object of the present invention is to provide a petroleum processing method and apparatus for separating and hydrotreating crude oil with a simplified facility configuration. More specifically, crude oil is separated and hydrogenated by a simplified equipment configuration by batch hydrogenation of atmospheric distillate and low-boiling fraction obtained by cracking atmospheric distillation residue. It is an object of the present invention to provide a method and an apparatus for treating petroleum.

[0008]

SUMMARY OF THE INVENTION According to the present invention, there is provided a method for treating petroleum, wherein crude oil is separated into an atmospheric distillate and an atmospheric distillation residue, and the crude oil is subjected to an atmospheric distillation step (A); Cracking step (B) of cracking at least a portion of the atmospheric distillation residue obtained in
And (C) separating the decomposition product obtained in the step (B) into a low-boiling fraction and a high-boiling fraction, and the atmospheric distillate obtained in the step (A). And a batch hydrotreating step (D) in which the low-boiling fraction obtained in the step (C) is subjected to a batch hydrogenation process.

Further, the petroleum processing apparatus of the present invention comprises:
Crude oil atmospheric distillation means for separating crude oil into atmospheric distillate and atmospheric distillation residue, (b) cracking means for cracking at least a part of the atmospheric distillation residue, (c) cracking means (B)
A separating means for separating the obtained decomposed product into a low-boiling fraction and a high-boiling fraction, and (d) hydrotreating the atmospheric distillate and the low-boiling fraction collectively. It is characterized by having a batch hydrogenation means.

[0010]

DETAILED DESCRIPTION OF THE INVENTION Hereinafter, the present invention will be described specifically. <Petroleum Treatment Method> One embodiment of the petroleum treatment method of the present invention will be described with reference to FIG. First, the preheated crude oil is introduced from the line (11) into the atmospheric distillation unit (1),
An atmospheric distillation step (A) of separating crude oil into atmospheric distillate and atmospheric distillation residue is performed. This atmospheric distillate usually comprises gas oil and a fraction having a lower boiling point than gas oil.

Subsequently, the atmospheric distillation residue obtained in the atmospheric distillation unit (1) is brought into contact with a catalyst and water through a line (13) to obtain at least the atmospheric distillation residue. It is introduced into a heavy oil steam converter (2), a device that partially decomposes, and is subjected to mild thermal cracking and hydrogenation by contact with a nickel-based catalyst and water to remove atmospheric distillation residue oil. The decomposition step (B) for decomposing is performed to obtain a decomposition product.

In the decomposition step (B), FIG.
As described above, the process of performing mild pyrolysis and hydrogenation using the heavy oil steam converter (2) is exemplified. However, at least a part of the atmospheric distillation residue is decomposed and a low-boiling fraction is distilled. Any method may be used as long as it generates the fraction, and the method of decomposition is not particularly limited. That is, as the decomposition performed in the decomposition step (B), any of decomposition methods such as mild thermal decomposition under contact, contact hydrovisbreaking, thermal decomposition, and decomposition in which these are combined can be suitably used. . Such cracking methods include, for example, a heavy oil steam conversion method in which an atmospheric distillation residue is brought into contact with a catalyst and water as described above, a cracking method in which an atmospheric distillation residue is brought into contact with a catalyst and hydrogen, and coking. A thermal decomposition method and the like can be mentioned, and any of these methods for decomposing at least a part of the atmospheric distillation residue oil can be suitably employed. As a reactor type in the decomposition method, a fixed bed system, a fluidized bed system, a boiling bed system, or the like can be used.

Subsequently, the decomposition product obtained in the decomposition step (B) is introduced into the separator (3) through the line (14), and is separated into a low-boiling component and a high-boiling liquid component (C).
I do. In the separation step (C), the high-boiling liquid component obtained from the separator (3) through the line (17) is obtained as fuel oil from the line (24) after the catalyst is separated by the catalyst recovery device (10) if necessary. Can be The fraction separated as a low-boiling component in this separation step is usually a fraction having a boiling point lower than that of light oil and light oil, and depending on the separation conditions and desired product properties, a fraction having a boiling point of 370 ° C or lower. Preferably it is.

On the other hand, the whole amount of the atmospheric distillate obtained by the atmospheric distillation unit (1) is introduced into the batch hydrotreating unit (4) through the lines (12) and (16). The low-boiling components obtained from the separator (3) are also introduced into the batch hydrotreating unit (4) together with the above-mentioned atmospheric distillate through line (15) and line (16). . In the lump hydrotreating unit (4), the introduced atmospheric distillate and low-boiling components obtained by decomposing the atmospheric distillation residue are batched without being separated into respective fractions. To perform a batch hydrogenation step (D). The hydrotreating performed in the batch hydrotreating step (D) is intended to 1) hydrodesulfurize for the purpose of removing impurities such as sulfur compounds, and 2) to improve product properties by saturating unsaturated hydrocarbons. And 3) hydrocracking for the purpose of reducing the weight of the product, or the case where these reactions occur simultaneously.

In the batch hydrotreating step (D), the crude oil is separated by atmospheric distillation into fractions such as light gas, LPG, light naphtha, heavy naphtha, kerosene and light oil, and each fraction is separated. The petroleum processing equipment for hydroprocessing can be greatly simplified compared to the conventional processing steps in which individual hydroprocessing is performed and components obtained from atmospheric distillation residual oil are separately hydrotreated. , Reduce construction costs of oil refinery plants,
The site area can be reduced. Further, with the simplification of the device, the device control becomes easy, and the device can be controlled at low cost. Further, maintenance costs can be reduced with simplification of the apparatus. This batch hydrogenation step (D) requires hydrogen, but as for the hydrogen source used here, the consumed amount is introduced as make-up hydrogen from the line (18), and the remainder is used as a hydrogen sulfide removal step (E) described later. It is economically preferable to supply with the gas containing hydrogen as a main component, from which hydrogen sulfide has been removed, obtained in the step (1).

The hydrogenated product obtained in the batch hydrotreating step (D) is introduced into a gas-liquid separator (5) through a line (19), and mainly contains hydrogen containing hydrogen sulfide generated in the hydrotreating. It is preferable to separate the gas into a component (gas component) and a liquid component. The gas mainly composed of hydrogen containing H ₂ S generated in the hydrotreating step (D) separated as a gas in the gas-liquid separator (5) is passed through a line (21) to remove hydrogen sulfide (6). And subjecting it to an amine treatment to perform the hydrogen sulfide removal step (E). The gas containing hydrogen as a main component after the hydrogen sulfide removal step (E) is
Introduced to the compressor (7) through the line (22) from the hydrogen sulfide removal device (6), and the batch hydrogenation process (D)
After the pressure is adjusted to the desired pressure in (1), it is preferably introduced into the batch hydrogenation apparatus (4) through the line (23) and recycled as a hydrogen source in the batch hydrogenation step (D). In the hydrogenation treatment step (D), if hydrogen sulfide is not generated or is very small, the hydrogen sulfide removal step (E) may not be performed.

The liquid component obtained in the gas-liquid separator (5) is introduced into a fractionation device (8) through a line (20), and a fractionation step (F) is performed. In the fractionation device (8), off-gas, LPG, naphtha, kerosene, light oil and other fractions are separated according to the boiling point. Each of the separated fractions is subjected to a treatment such as reforming as necessary, and can be appropriately used as a petroleum product base material.

According to such a method for treating petroleum of the present invention, a higher value-added fraction of light oil or less is recovered by cracking the atmospheric distillation residual oil than in the case where the atmospheric distillation residual oil is distilled under reduced pressure. Thus, the residual oil at normal pressure can be effectively used. In addition, the atmospheric distillate and the low-boiling components obtained by decomposing the atmospheric distillation residue can be subjected to batch hydrotreating without being separated into respective fractions, which simplifies the process. It is possible to economically process petroleum with the above-mentioned processing step. <Petroleum Processing Apparatus> The petroleum processing apparatus of the present invention comprises (a)
Crude oil atmospheric distillation means for separating crude oil into atmospheric distillate and atmospheric distillation residue, (b) cracking means for cracking at least a part of the atmospheric distillation residue, (c) cracking means (B)
A separating means for separating the obtained decomposed product into a low-boiling fraction and a high-boiling fraction, and (d) hydrotreating the atmospheric distillate and the low-boiling fraction collectively. Equipped with batch hydrogenation means.

One embodiment of the present invention will be described with reference to FIG. 1. As a crude oil atmospheric distillation means (a) for separating crude oil into atmospheric distillate and atmospheric distillation residue, ordinary oil is used. Pressure distillation apparatus (1), heavy oil steam conversion apparatus (2) as cracking means (b) for cracking at least a part of atmospheric distillation residual oil, cracked product obtained from cracking means (b), As a separating means (c) for separating into a low-boiling fraction and a high-boiling fraction, a separator (3), an atmospheric distillate, and the low-boiling fraction are subjected to hydrotreating at once. A batch hydrogenation apparatus (4) is provided as the batch hydrogenation means (d).

Further, in the present invention, the processing apparatus described above may further include other additional means. Further, in the present invention, hydrogen sulfide such as an amine treatment apparatus for removing hydrogen sulfide from gaseous components containing hydrogen as a main component separated from the hydrogenated product obtained from the batch hydrotreating means (d) It is preferable to have a removing means (e) and a fractionating means (f) such as a distillation column. In FIG. 1, the hydrogen sulfide removing device (6) is used as the hydrogen sulfide removing means (e), and the fractionating means (f) And a fractionation device (8). In addition, there is provided a separation means for separating the hydrogenated product obtained from the batch hydrogenation means (d) into a gaseous component containing hydrogen as a main component and a liquid component. It has a vessel (5).

In the present invention, each of the above means is not particularly limited as long as each means can achieve each object. For example, in FIG. 1, as described above,
As a cracking means (b) for cracking at least a part of the atmospheric distillation residue, a heavy oil steam converter (2) is provided. As the cracking means (b), other than a heavy oil steam converter is used. Cracking devices may be used, such as thermal cracking devices such as contact hydrovisbreaking devices and coking devices (cokers) that decompose at least a part of atmospheric distillation residue by contacting the atmospheric distillation residue with a catalyst and hydrogen. Any decomposing means capable of decomposing at least a part of the pressure distillation residual oil can be suitably used, and a device used for decomposing the vacuum distillation residual oil can be appropriately used.

A heavy oil steam converter, which is used as the cracking means (b) and is a device for decomposing at least a part of the atmospheric distillation residue by contacting the atmospheric distillation residue with a catalyst and water. Is preferably a device capable of decomposing at least a portion of the atmospheric distillation residue by contacting the atmospheric distillation residue with a nickel-based catalyst and water in the device. Further, as a contact hydrovisbreaking device, which is used as the cracking means (b) and is a device for decomposing at least a part of the atmospheric distillation residue by contacting the atmospheric distillation residue with a catalyst and hydrogen, It is desirable that the apparatus be capable of hydrocracking at least a part of the atmospheric distillation residue by adding an ultrafine hydrocracking catalyst or the like to the pressure distillation residue. Further, as the pyrolysis apparatus preferably used as the cracking means (b), coking is performed in which the pyrolysis is performed in the apparatus to obtain a coke component serving as a raw material for petroleum coke and a light pyrolysis oil from the residual oil at atmospheric pressure. The device is preferred. When the cracking means (b) is a thermal cracking device such as a caulking device, the cracked product contains a large amount of olefins. For example, as shown in FIG. 5 and FIG. It is preferable to add a processing device (9).

In FIG. 1, an atmospheric distillation unit (1) is used as a crude oil atmospheric distillation unit (a), and the decomposed product obtained from the decomposition unit (b) is divided into a low boiling fraction and a high boiling fraction. Although each of the separators (3) is used as the separation means (c) for separating into oil, an apparatus in which the crude oil atmospheric distillation means (a) and the separation means (c) are integrally formed may be used. As shown in FIG. 2, FIG. 4, and FIG. 6, an atmospheric pressure distillation apparatus (1 ′) with an additional separation function, which is an atmospheric pressure distillation column having a bottom divided by partition walls, may be used. When such a separation function-added atmospheric distillation apparatus (1 ′) is used as the crude oil atmospheric distillation means (a) and the separation means (c) of the present invention, the crude oil atmospheric distillation means (a) and Compared to the case where the separation means (c) is separately provided, the construction cost, the equipment area, the supply line, and the like can be reduced, and the labor for controlling and maintaining the apparatus can be further reduced, which is economical.

Crude oil atmospheric distillation means (a) and separation means (c)
May be a device in which crude oil atmospheric distillation means (a) and separation means (c) are combined, but preferably the bottom of the atmospheric distillation column is separated by a partition. It is desirable that the apparatus is divided, specifically, an apparatus in which the bottom of the atmospheric distillation column is divided by a partition wall, and a crude oil for performing atmospheric distillation is introduced into one of the separated partitions, and the other is introduced. And the entire amount of the decomposed product obtained from the decomposing means (b) is introduced, and the distillates derived from both raw materials and distilled at normal pressure distillation temperature (generally, light oil and lighter light oil-derived fractions) are collected. It is desirable that the device be capable of being taken out.

According to the present invention, the atmospheric distillation residue is economically and effectively utilized by a device which is significantly simplified as compared with the case where the atmospheric distillation residue is treated using a vacuum distillation apparatus. In addition, it is possible to provide an economical petroleum processing apparatus that can save the area of the apparatus by a simplified facility configuration and reduce the trouble of controlling and maintaining the apparatus.

[0026]

According to the present invention, it is possible to recover a high value-added fraction of light oil or less by cracking the atmospheric distillation residue oil, and to economically utilize the atmospheric distillation residue oil effectively. In addition, since the atmospheric distillate and the low-boiling fraction obtained by decomposing the atmospheric distillation residue are subjected to a hydrotreating process at a time, each fraction in the atmospheric distillate and the atmospheric pressure are removed. A petroleum processing method that greatly simplifies the processing steps and equipment and can economically process petroleum, compared with the case of individually hydrotreating low-boiling fractions obtained by decomposing distillation residue oil. Can be provided.

Further, with the simplified equipment configuration,
An oil processing device capable of economically processing oil can be provided. Furthermore, crude oil atmospheric distillation means,
In the case of using a device having a facility configuration integrally formed with a means for separating a decomposed product of the atmospheric distillation residue, the processing steps and facilities can be greatly simplified, and the petroleum can be economically processed.

According to the method and apparatus for treating petroleum of the present invention, particularly a small amount of crude oil can be economically treated.

[0029]

EXAMPLES Hereinafter, the method of carrying out the present invention will be described more specifically with reference to the case of treating 50,000 BPSD of Arabian light crude oil, but the present invention is not limited to these examples. In the following examples, a batch hydrotreating apparatus (batch hydrodesulfurization apparatus) for batch hydrotreating atmospheric distillate distillate oils usually uses nickel, cobalt, molybdenum, or the like as an active component. However, the present invention is not limited to such an embodiment.

[0030]

[Example 1] Using the flow shown in Fig. 1, arabian light crude oil preheated to 360 ° C was applied to line (11) through 50,000 BPSD.
To the atmospheric distillation unit (1) to separate into a distillate (30,000 BPSD) obtained from the top of the column and an atmospheric distillation residue (20,000 BPSD) obtained from the bottom of the column.

Subsequently, the atmospheric distillation residue obtained in the atmospheric distillation unit (1) is introduced into a heavy oil steam converter (2) through a line (13) to decompose the atmospheric distillation residue oil. , To obtain a decomposition product. In the cracking of the atmospheric distillation residue, the heavy oil steam converter (2) introduces the atmospheric distillation residue and a catalyst (a catalyst containing sodium, potassium, nickel and cobalt) and water. Performs mild pyrolysis and hydrogenation.

The decomposition product obtained from the heavy oil steam converter (2) through the line (14) is introduced into the separator (3), and the low boiling component obtained from the line (15) and the line (17) It is separated from the higher boiling components obtained. The high boiling component (14,450 BPSD) obtained from the line (17) is used as fuel oil after the catalyst is recovered and removed by the catalyst recovery device (10).

The atmospheric distillate obtained from the atmospheric distillation unit (1) through the line (12) is entirely introduced into the batch hydrotreating unit (4) through the line (16). Also,
The low boiling point component (6,000 BPSD) obtained from the separator (3) through the line (15) is also introduced into the batch hydrotreating unit (4) together with the atmospheric distillate through the line (16). At this time, the pressure at the top of the batch hydrodesulfurization unit (4) (near the raw material inlet) is 50 kg / cm ² G.

In the batch hydrotreating device (4), the introduced atmospheric distillate and the low-boiling component obtained by decomposing the atmospheric residue are separated into respective fractions. Hydrotreating (hydrodesulfurization) at once. In this hydrogenation treatment, a cobalt-molybdenum catalyst is used. The hydrogen consumed in this batch hydrogenation unit (4) is introduced as make-up hydrogen from the line (18).
m ³ / h of hydrogen gas and 15,820 Nm ³ / h of hydrogen, which is recycled from the line (23), is used as the main component.

The hydrogenated product obtained by the batch hydrotreating apparatus (4) is introduced into a gas-liquid separator (5) through a line (19) and mainly contains hydrogen containing hydrogen sulfide generated in the hydrotreating. It is separated into a gas (gas component) as a component and a liquid component. This liquid component is introduced into the fractionation device (8) through the line (20), and is separated into off-gas, LPG, naphtha, kerosene, and light oil fractions by boiling point.

On the other hand, the gas containing hydrogen as a main component and containing H ₂ S generated in the hydrogenation treatment, which has been separated as a gas in the gas-liquid separator (5), passes through the line (21) through the hydrogen sulfide removing device (6). And subject to amine treatment to remove hydrogen sulfide. The gas mainly containing hydrogen from which hydrogen sulfide has been removed is introduced into the compressor (7) from the hydrogen sulfide removing device (6) through the line (22), and is pressurized to 56 kg / cm ² G. 23) Batch hydroprocessing unit (4)
And use it for recycling.

[0037]

Example 2 A flow shown in FIG. 2 in which an atmospheric distillation apparatus and a fractionating apparatus are integrally formed and a separation function-added atmospheric distillation apparatus (1 ′) is provided, and crude oil is applied along the flow. Process. In Fig. 2, the atmospheric distillation unit with additional separation function (1 ')
50,000 BPS of Arabian light crude oil preheated to 360 ° C
D is introduced from the line (11), and under this condition, atmospheric distillation of crude oil and separation of the decomposition product obtained from the heavy oil steam converter (2) are performed.

Here, the atmospheric pressure distillation apparatus (1 ') with a separation function is an apparatus in which the bottom of the atmospheric pressure distillation column is divided by a partition, and crude oil is passed through one of the divided lines through a line (11). , The other side introduces the cracked product through line (14), and the distillate (36,000 BPS
D) is obtained collectively from line (12). The atmospheric distillation residue obtained in the atmospheric pressure distillation apparatus with separation function (1 ′) is introduced into the heavy oil steam converter (2) as in Example 1 through the line (13) to decompose, The obtained decomposed product is introduced into a normal pressure distillation apparatus (1 ') with a separation function through a line (14). The introduced decomposed product is separated by the separation function part of the atmospheric distillation unit with additional separation function (1 '), and the distillate (low-boiling fraction) is collected together with the atmospheric distillate from line (12). It is introduced into a hydrotreating apparatus (4), and treated in the same manner as in Example 1. On the other hand, the high-boiling components obtained from the line (17) are used as fuel oil after the catalyst is recovered by the catalyst recovery device (10).

The petroleum processing apparatus used in Example 2 using the separation function-added atmospheric distillation apparatus (1 ') in which the atmospheric distillation apparatus and the fractionating apparatus are integrally formed includes: an atmospheric distillation apparatus; Since a device for separating the decomposed product into a low-boiling fraction and a high-boiling fraction is not provided separately but is integrated, the apparatus has a simple and economical configuration in which the number of separation devices and piping is reduced.

[0040]

Example 3 In Example 1, as a device for decomposing atmospheric distillation residue, a contact hydrovisbreaking device (2 ') was provided instead of the heavy oil steam converter (2).
Using the flow shown in FIG. 3 without the catalyst recovery unit (10), 50,000 BPSD of Arabian light crude oil preheated to 360 ° C. is processed according to the flow.

In FIG. 3, the distillate (30,000 BPS) obtained from the top of the atmospheric distillation unit (1) through the line (12)
D) and the low-boiling component (4,000 BPSD) obtained from the separator (3) through the line (15) are introduced into the batch hydrotreating apparatus (4), and are treated in the same manner as in Example 1.

[0042]

Embodiment 4 In Embodiment 2, as a device for decomposing atmospheric distillation residual oil, a contact hydrovisbreaking device (2 ′) similar to that of Example 3 is used instead of the heavy oil steam converter (2). In accordance with the flow shown in FIG. 4 and provided without the catalyst recovery unit (10), 50,000 BPSD of Arabian light crude oil preheated to 360 ° C. is processed along the flow.

In FIG. 4, the atmospheric distillation residue obtained in the atmospheric distillation apparatus with additional separation function (1 ') is passed through a line (13).
And into the contact hydrovisbreaking device (2 ') to decompose, and the obtained decomposed product is introduced into the atmospheric distillation device (1') with a separation function through the line (14).
The introduced decomposition product is separated by the separation function part of the atmospheric distillation apparatus (1 ′) with a separation function. A distillate (34,000 BPS) derived from both crude oil and cracked products obtained from this atmospheric pressure distillation unit with additional separation function (1 ') through line (12)
D) is further introduced into the batch hydrogenation apparatus (4), and is treated in the same manner as in Example 2 below.

[0044]

[Example 5] In Example 1, instead of the heavy oil steam converter (2), a pyrolysis unit (coker) (2 '') was used instead of a heavy oil steam conversion unit in Example 1, Preliminary hydrotreating unit for preliminarily hydrotreating oil (9)
5, and 50,000 BPSD of Arabian light crude oil preheated to 360 ° C. is processed according to the flow shown in FIG. 5 without the catalyst recovery unit (10).

In FIG. 5, the atmospheric distillation residue obtained from the bottom of the atmospheric distillation unit (1) is introduced into a pyrolysis unit (coker) (2 ″) through a line (13), and the coke raw material is removed. Obtain the decomposition product. The decomposition product obtained here is introduced into the pre-hydrotreating unit (9) through the line (14) and preliminarily hydrotreated (hydrogenated), and the obtained hydrotreated product is separated through the line (26) Introduce into vessel (3). In addition, hydrogen is supplied to the preliminary hydrotreating apparatus (9) through a line (25).

From the top of the atmospheric distillation unit (1), a line (1
The distillate (30,000 BPSD) obtained through 2) and the low-boiling component (1) obtained through line (15) from separator (3)
BPSD) is introduced into the batch hydrotreating apparatus (4) through the line (16), and is treated in the same manner as in Example 1.

[0047]

Embodiment 6 In Embodiment 2, a pyrolysis unit (coker) (2 ″) similar to that of Embodiment 5 is used instead of the heavy oil steam conversion unit (2) to decompose the atmospheric distillation residue. )
And a preliminary hydrotreating unit (9) for preliminarily hydrotreating the pyrolysis oil, and without a catalyst recovery unit (10), adopting the flow shown in FIG. 360 ℃
Process 50,000 BPSD of preheated Arabian light crude oil.

In FIG. 6, the atmospheric distillation residue obtained in the atmospheric pressure distillation apparatus with separation function (1 ′) is transferred to a line (13).
Into a pyrolysis unit (coker) (2 '') for pyrolysis to obtain coke raw materials and decomposition products. The decomposition product obtained here is introduced into the pre-hydrotreating device (9) through the line (14) and preliminarily hydrotreated (hydrogenated),
The obtained hydrotreated product is introduced into the separation function section of the atmospheric distillation apparatus (1 ′) with a separation function through the line (26) to be separated. In addition, hydrogen is supplied to the preliminary hydrotreating apparatus (9) through a line (25).

The distillate (40,000 BPSD) derived from both the crude oil and the decomposed product obtained from the atmospheric distillation unit (1 ') with additional separation function through the line (12) is fed to the batch hydrotreating unit (4) And then processed in the same manner as in Example 2.

[Brief description of the drawings]

FIG. 1 is a schematic process drawing of Example 1.

FIG. 2 is a schematic process drawing of Example 2.

FIG. 3 is a schematic process diagram of Example 3.

FIG. 4 is a schematic process drawing of Example 4.

FIG. 5 is a schematic process drawing of Example 5.

FIG. 6 is a schematic process drawing of Example 6.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Atmospheric distillation unit 1 '... Atmospheric distillation unit with additional separation function 2 ... Heavy oil steam conversion unit 2' ... Contact hydrovisbreaking unit 2 "... Pyrolysis unit 3 ... Separator 4 ... Batch hydrogenation Treatment (hydrodesulfurization) device 5 ... gas-liquid separator 6 ... hydrogen sulfide removal device 7 ... compressor 8 ... fractionation device 9 ... pre-hydrotreating device 10 ... catalyst recovery device 11-26 ... line

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) // C10G 9/00 C10G 9/00 11/20 11/20 19/00 19/00 45/08 45 / 08 Z (72) Inventor Makoto Inomata 2205 Narita-cho, Oarai-machi, Higashi-Ibaraki-gun, Ibaraki Prefecture Within JGC Technical Research Institute (72) Inventor Akira Sugimoto 2-3-1 Minatomirai, Nishi-ku, Yokohama-shi, Kanagawa Prefecture Within JGC Corporation (72) Inventor Shigeki Nagamatsu 2205 Narita-cho, Oarai-machi, Higashi-Ibaraki-gun, Ibaraki F-term in JGC Corporation Technical Research Institute (reference) 4H029 AA13 AB05 AB06 AB08 AB10 AB11 AB13 BA13 BB05 BB06 BB10 BB11 BB13 BD01 BD17 CA00 DA00 DA01 DA02 DA03 DA04 DA09 DA12

Claims (14)

[Claims] 1. A crude oil atmospheric distillation step (A) for separating crude oil into an atmospheric distillation distillate and an atmospheric distillation residue, and the atmospheric distillation residue obtained in the step (A). A decomposition step (B) of decomposing at least a part of the above, a separation step (C) of separating the decomposition product obtained in the step (B) into a low-boiling fraction and a high-boiling fraction, A batch hydrotreating step (D) of batch hydrotreating the atmospheric distillate obtained in (A) and the low-boiling fraction obtained in step (C). A method for treating petroleum. 2. A hydrogen sulfide removing step (E) for removing hydrogen sulfide from the batch hydrogenation product obtained in the batch hydrogenation process (D), and separating the batch hydrogenation product into respective fractions. The method for treating petroleum according to claim 1, comprising a fractionation step (F). 3. The hydrogen sulfide removing step (E) separates the batch hydrogenated product obtained in the batch hydrogenation step (D) into a gas containing hydrogen as a main component and other fractions. The method for treating petroleum according to claim 2, wherein the step is a step of removing hydrogen sulfide from the gas containing hydrogen as a main component. 4. The method according to claim 1, wherein the cracking step (B) is a step of cracking at least a part of the atmospheric distillation residue by contacting the atmospheric distillation residue with a catalyst and water. The method for treating petroleum according to item 1. 5. The cracking step (B) is a step of contacting the atmospheric distillation residue with a catalyst and hydrogen to decompose at least a part of the atmospheric distillation residue. The method for treating petroleum according to item 1. 6. The method according to claim 1, wherein the cracking step (B) is a step of thermally cracking at least a part of the atmospheric distillation residue and hydrotreating the resulting cracked oil. A method for treating petroleum as described. 7. The separation step (C) is a crude oil atmospheric distillation step (A).
The method for treating petroleum according to any one of claims 1 to 6, wherein the method is performed in an apparatus that performs the following. 8. A crude oil atmospheric distillation means for separating (a) a crude oil into an atmospheric distillate and an atmospheric distillation residue, and (b) cracking for decomposing at least a part of the atmospheric distillation residue. Means, (c)
Separating means for separating the decomposed product obtained from the decomposing means (b) into a low-boiling fraction and a high-boiling fraction; and (d) collectively combining the atmospheric distillate and the low-boiling fraction with the low-boiling fraction. A petroleum processing apparatus, comprising: a batch hydrotreating unit for performing a hydrotreating process. 9. A separating means for separating the batch hydrogenated product obtained by said batch hydrogenation means (d) into a gas containing hydrogen as a main component and other fractions; 9. The petroleum processing apparatus according to claim 8, further comprising hydrogen sulfide removing means (e) for removing hydrogen sulfide from the gas to be treated, and fractionating means (f) for separating other fractions into respective fractions. . 10. Crude oil atmospheric distillation means (a) and separation means (c)
10. The petroleum processing apparatus according to claim 8, wherein the components are integrally formed. 11. The petroleum treatment according to claim 10, wherein the crude oil atmospheric distillation means (a) and the separation means (c), which are integrally formed, are an atmospheric distillation column having a bottom divided by a partition. apparatus. 12. The apparatus according to claim 8, wherein the cracking means (b) is a device for cracking at least a part of the atmospheric distillation residue by bringing the atmospheric distillation residue into contact with a catalyst and water. A petroleum processing unit according to any of the claims. 13. The apparatus according to claim 8, wherein the cracking means (b) is a device for cracking at least a part of the atmospheric distillation residue by contacting the atmospheric distillation residue with a catalyst and hydrogen. A petroleum processing unit according to any of the claims. 14. The petroleum processing apparatus according to claim 8, wherein said cracking means (b) is a caulking apparatus.