JP4801344B2 - Apparatus and method for preparing mixed fuel oil - Google Patents

Apparatus and method for preparing mixed fuel oil Download PDF

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JP4801344B2
JP4801344B2 JP2004352773A JP2004352773A JP4801344B2 JP 4801344 B2 JP4801344 B2 JP 4801344B2 JP 2004352773 A JP2004352773 A JP 2004352773A JP 2004352773 A JP2004352773 A JP 2004352773A JP 4801344 B2 JP4801344 B2 JP 4801344B2
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heavy oil
base material
viscosity
oil
pipe
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JP2006160851A (en
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三夫 山口
民雄 大沼
広昭 川崎
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Idemitsu Kosan Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a fuel oil blend preparation system which can efficiently blend heavy oil bases. <P>SOLUTION: A plurality of branch pipes 210 each of which connects at one of its ends with one of a plurality of base oil tanks 10 which store heavy oil bases and is provided with a regulation valve 211 and a flowmeter 212 collectively connect at their respective other ends with one end of the main pipe 220. The other end of the main pipe 220 connects with a storage tank 400 storing a fuel oil blend and provided with an agitator 410. The storage tank 400 and one end of the main pipe 220 are connected together through a circulation line 230. The main pipe 220 is provided with a static mixer-equipped pipe mixer 300 positioned downstream of the circulation line 230. Thus, it is possible to markedly shorten the mixing time necessary to prepare a fuel oil blend of a uniform composition, which results in efficient preparation. <P>COPYRIGHT: (C)2006,JPO&amp;NCIPI

Description

本発明は、異なる特性の重油基材が混合された混合燃料油の調製装置およびその方法に関する。   The present invention relates to an apparatus and a method for preparing a mixed fuel oil in which heavy oil base materials having different characteristics are mixed.

従来、例えば船舶における燃料油の調製のための各種方法が知られている。これら従来の燃料油の調製方法として、異なる特性の重油基材を、各種方法により混合する構成が採られている（例えば、特許文献１および特許文献２参照）。   Conventionally, various methods for preparing fuel oil, for example, in a ship are known. As a conventional method for preparing fuel oil, a configuration in which heavy oil base materials having different characteristics are mixed by various methods is employed (see, for example, Patent Document 1 and Patent Document 2).

特許文献１に記載のものは、高粘度重油を燃料供給パイプからブレンダに導入する。そして、ブレンダ内で、低粘度油タンクから供給される低粘度油と混合し、あらかじめ設定された粘度の燃料油に調製する。そして、ブレンダで調製した燃料油は、パイプから燃料油貯蔵タンクに装填する構成が採られている。   The thing of patent document 1 introduce | transduces high-viscosity heavy oil into a blender from a fuel supply pipe. And it mixes with the low-viscosity oil supplied from a low-viscosity oil tank within a blender, and prepares the fuel oil of the preset viscosity. The fuel oil prepared by the blender is loaded into the fuel oil storage tank from the pipe.

特許文献２に記載のものは、本船に設備されている低粘度油タンクから低粘度油を取り出し、高粘度油の中にブレンダを使って混入させて中粘度燃料油を調製する。そして、この調製した中粘度燃料油を本船内二重底の燃料タンクへ送り込む構成が採られている。   The thing of patent document 2 takes out low-viscosity oil from the low-viscosity oil tank with which this ship is equipped, and mixes it in high-viscosity oil using a blender, and prepares medium-viscosity fuel oil. And the structure which sends this prepared medium viscosity fuel oil to the fuel tank of the ship's double bottom is taken.

特開昭６２−１５８９１７号公報（第104頁右下欄〜第106頁右上欄）JP 62-1558917 A (page 104, lower right column to page 106, upper right column) 特開昭５６−８６９９２号公報（第661頁右欄〜第662頁右上欄）JP-A-56-86992 (right column on page 661 to upper right column on page 662)

しかしながら、上述した特許文献１および特許文献２に記載のような従来の燃料油の調製方法では、それぞれブレンダで混合して供給するので、特に混ざりにくい特性が異なる重油基材を略均一に混合されるまでに時間を要するという問題点がある。   However, in the conventional fuel oil preparation methods as described in Patent Document 1 and Patent Document 2 described above, since they are mixed and supplied by a blender, heavy oil base materials having different characteristics that are particularly difficult to mix are mixed substantially uniformly. There is a problem that it takes time to complete.

本発明の目的は、このような問題点に鑑み、効率よく重油基材が混合される混合燃料油の調製装置およびその方法を提供することにある。   In view of such problems, an object of the present invention is to provide a mixed fuel oil preparation apparatus and a method thereof in which a heavy oil base material is efficiently mixed.

本発明の混合燃料油の調製装置は、密度および動粘度が異なる複数の高粘度重油基材および低粘度重油基材を混合してＣ重油を調製する混合燃料油の調製装置であって、前記高粘度重油基材および低粘度重油基材は、少なくとも接触分解装置塔底油、直留軽油および直脱残油であり、前記Ｃ重油を貯蔵する貯蔵タンクと、前記高粘度重油基材および低粘度重油基材がそれぞれ貯蔵される複数の基材タンクおよび前記貯蔵タンクを連通する輸送ラインと、前記輸送ライン中に設けられ前記複数の基材タンクから流出する前記高粘度重油基材および低粘度重油基材を管内混合する管内混合装置と、を具備し、前記輸送ラインは、前記基材タンクに接続され前記高粘度重油基材および低粘度重油基材の流出を調整する調整弁および流量計を備えた支管と、これら支管が連結され前記支管からそれぞれ流れ込む高粘度重油基材および低粘度重油基材を合流して合流重油基材とする１本の本管と、前記貯蔵タンクから前記Ｃ重油の少なくとも一部を前記管内混合装置に返送する循環ラインとを備え、前記管内混合装置は、前記本管に設けられたスタティックミキサであり、前記本管で合流された後の前記合流重油基材とともに前記返送される混合燃料油を管内混合することを特徴とする。 Mixing fuel oil preparation apparatus of the present invention is an apparatus for preparing a mixed fuel oil to prepare the C heavy oil by mixing the density and kinematic viscosity different high viscosity fuel oil base material and the low viscosity heavy oil base, wherein high viscosity fuel oil base material and low viscosity fuel oil base material, at least catalytic cracker bottoms oil, a straight-run gas oil and straight-de-resid, a storage tank for storing the fuel oil C, the high viscosity fuel oil base material and the low A plurality of base material tanks each storing a viscosity heavy oil base material, a transport line communicating with the storage tank, and the high viscosity heavy oil base material and low viscosity provided in the transport line and flowing out of the plurality of base material tanks An in-pipe mixing device that mixes the heavy oil base material in the pipe, and the transport line is connected to the base material tank and adjusts the outflow of the high-viscosity heavy oil base material and the low-viscosity heavy oil base material, and a flow meter Branch with If, one the main pipe to merge oil base joins the high viscosity fuel oil base material flowing from each of these branch pipe is connected the branch pipe and the low-viscosity fuel oil base, at least one said C heavy oil from the storage tank A circulation line for returning a part to the in-pipe mixing device, wherein the in-pipe mixing device is a static mixer provided in the main pipe, and the return together with the joined heavy oil base material after being joined in the main pipe The mixed fuel oil is mixed in the pipe.

この発明では、密度および動粘度が異なる複数の高粘度重油基材および低粘度重油基材をそれぞれ貯蔵する複数の基材タンクと混合燃料油であるＣ重油を貯蔵する貯蔵タンクとを連通する輸送ライン中に、複数の基材タンクから流出する重油基材を管内混合する管内混合装置を設けている。このため、密度差および動粘度差が大きく混合しにくいＣ重油の基材となる各種高粘度重油基材および低粘度重油基材が効率よく短時間で混合され、硫黄分含有量や燃焼熱あるいは粘度などの所定の安定した特性のＣ重油を容易に調製できる。
また、本発明では、貯蔵タンクからＣ重油を管内混合装置に返送する循環ラインを輸送ラインに設け、重油基材とともに循環ラインで返送したＣ重油の少なくとも一部を管内混合装置で管内混合する。このため、より効率よく短時間で所定の安定した特性のＣ重油を調製できる。
さらに、本発明では、管内混合装置としてスタティックミキサを用いる。このため、効率よく短時間で重油基材を混合して所定の特性のＣ重油を調製するための構成が容易に得られるとともに、動力源が不要であることから、調製コストの低減が容易に図れる。
そして、本発明では、基材タンクに接続され高粘度重油基材および低粘度重油基材の流出を調整する調整弁および流量計を備えた支管を連結して１本とした輸送ラインの本管に、管内混合装置を設けている。このため、支管の連結による各高粘度重油基材および低粘度重油基材の合流時にある程度混合される状態となり、管内混合装置での管内混合の効率がより向上し、装置構成の簡略化およびＣ重油のより効率的な調製が簡単な構成で容易に得られる。 In the present invention, transportation that communicates a plurality of base tanks for storing a plurality of high-viscosity heavy oil bases and low-viscosity heavy oil bases having different densities and kinematic viscosities with a storage tank for storing C heavy oil that is a mixed fuel oil. An in-pipe mixing device is provided in the line for mixing the heavy oil base material flowing out from the plurality of base material tanks in the pipe. Accordingly, various high viscosity fuel oil base as a base material of a density difference and less likely C heavy oil kinematic viscosity difference is mixed large and low viscosity fuel oil base material are mixed in a short time efficiently, sulfur content and combustion heat or C heavy oil having predetermined stable characteristics such as viscosity can be easily prepared.
Moreover, in this invention, the circulation line which returns C heavy oil from a storage tank to an in-pipe mixing apparatus is provided in a transport line, and at least one part of C heavy oil returned by the circulation line with the heavy oil base material is mixed in a pipe with an in-pipe mixing apparatus. For this reason, the C heavy oil of the predetermined stable characteristic can be prepared more efficiently in a short time.
Further, in the present invention, a static mixer is used as the in-pipe mixing device. For this reason, it is possible to easily obtain a configuration for preparing C heavy oil having predetermined characteristics by mixing heavy oil base materials efficiently and in a short time, and since no power source is required, preparation cost can be easily reduced. I can plan.
And in this invention, the main line of the transportation line which connected the branch pipe provided with the adjustment valve and flow meter which were connected to the base material tank and adjusted the outflow of a high-viscosity heavy oil base material and a low-viscosity heavy oil base material. In-tube mixing device is provided. For this reason, the high viscosity heavy oil base material and the low viscosity heavy oil base material are mixed to some extent when the branch pipes are connected, so that the efficiency of in-tube mixing in the in-pipe mixing device is further improved, the device configuration is simplified, and C A more efficient preparation of heavy oil is easily obtained with a simple construction.

そして、本発明では、前記貯蔵タンクは、前記Ｃ重油を攪拌する攪拌装置を備えた構成とすることが好ましい。この発明では、貯蔵タンクに貯留するＣ重油を攪拌装置にて攪拌するので、貯蔵中に重油基材が分離することを防止でき、所定の特性のＣ重油を長時間安定して供給できる。 And in this invention, it is preferable that the said storage tank is set as the structure provided with the stirring apparatus which stirs the said C heavy oil . In the present invention, since the C heavy oil stored in the storage tank is stirred by the stirring device, it is possible to prevent the heavy oil base material from being separated during storage, and C heavy oil having a predetermined characteristic can be stably supplied for a long time.

本発明の混合燃料油の調製方法は、密度および動粘度が異なる複数の高粘度重油基材および低粘度重油基材を混合してＣ重油を調製する混合燃料油の調製方法であって、前記高粘度重油基材および低粘度重油基材は、少なくとも接触分解装置塔底油、直留軽油および直脱残油であり、スタティックミキサを用い、各基材タンクにそれぞれ貯蔵された前記高粘度重油基材および低粘度重油基材を所定の割合で合流させた後の合流重油基材を前記スタティックミキサにより管内混合しつつ前記貯蔵タンクへ前記Ｃ重油として流入させ、かつ前記Ｃ重油の少なくとも一部を前記スタティックミキサへ返送して前記合流された後の前記合流重油基材とともに管内混合させることを特徴とする。 Process for the preparation of the mixed fuel oil of the present invention is a density and a process for the preparation of the mixed fuel oil kinematic viscosity to prepare the C heavy oil by mixing different high viscosity fuel oil base material and the low viscosity heavy oil base, wherein The high-viscosity heavy oil base material and the low-viscosity heavy oil base material are at least a catalytic cracking apparatus tower bottom oil, straight-run gas oil, and direct desorption residual oil, and the high-viscosity heavy oil stored in each base tank using a static mixer. The combined heavy oil base material after the base material and the low-viscosity heavy oil base material are joined at a predetermined ratio is introduced into the storage tank as the C heavy oil while being mixed in the pipe by the static mixer, and at least a part of the C heavy oil Is returned to the static mixer and mixed in the pipe together with the merged heavy oil base material after the merge .

この発明では、各基材タンクにそれぞれ貯蔵された前記高粘度重油基材および低粘度重油基材を所定の割合で合流させて管内混合装置で管内混合しつつ前記貯蔵タンクへ前記Ｃ重油として流入させている。このため、密度差および動粘度差が大きく混合しにくいＣ重油の基材となる各種高粘度重油基材および低粘度重油基材が効率よく短時間で混合され、硫黄分含有量や燃焼熱あるいは粘度などの所定の安定した特性のＣ重油を容易に調製できる。
さらに、本発明では、スタティックミキサを用いる。このため、効率よく短時間で重油基材を混合して所定の特性のＣ重油を調製するための構成が容易に得られるとともに、動力源が不要であることから、調製コストの低減が容易に図れる。
そして、本発明では、基材タンクからの高粘度重油基材および低粘度重油基材を合流してスタティックミキサで混合している。このため、各高粘度重油基材および低粘度重油基材の合流時にある程度混合される状態となり、スタティックミキサでの管内混合の効率がより向上し、装置構成の簡略化およびＣ重油のより効率的な調製が簡単な構成で容易に得られる。 In this invention, the high-viscosity heavy oil base material and the low-viscosity heavy oil base material respectively stored in the base material tanks are merged at a predetermined ratio and mixed in the pipe by the in-pipe mixing device, and flow into the storage tank as the C heavy oil. I am letting. Accordingly, various high viscosity fuel oil base as a base material of a density difference and less likely C heavy oil kinematic viscosity difference is mixed large and low viscosity fuel oil base material are mixed in a short time efficiently, sulfur content and combustion heat or C heavy oil having predetermined stable characteristics such as viscosity can be easily prepared.
Further, in the present invention, a static mixer is used. For this reason, it is possible to easily obtain a configuration for preparing C heavy oil having predetermined characteristics by mixing heavy oil base materials efficiently and in a short time, and since no power source is required, preparation cost can be easily reduced. I can plan.
In the present invention, the high-viscosity heavy oil base material and the low-viscosity heavy oil base material from the base material tank are merged and mixed by the static mixer. For this reason, the high viscosity heavy oil base material and the low viscosity heavy oil base material are mixed to some extent, and the efficiency of in-tube mixing in the static mixer is further improved, the device configuration is simplified, and the C heavy oil is more efficient. Can be easily obtained with a simple structure.

そして、本発明では、前記貯蔵タンクに貯蔵された前記Ｃ重油の少なくとも一部を前記スタティックミキサへ返送して前記高粘度重油基材および低粘度重油基材とともに管内混合する。
この発明では、貯蔵タンクに貯蔵されたＣ重油の少なくとも一部をスタティックミキサへ返送して重油基材とともに管内混合するため、より効率よく短時間で所定の安定した特性のＣ重油を調製できる。 In the present invention, at least a part of the C heavy oil stored in the storage tank is returned to the static mixer and mixed in the pipe together with the high viscosity heavy oil base material and the low viscosity heavy oil base material.
In this invention, since at least a part of the C heavy oil stored in the storage tank is returned to the static mixer and mixed with the heavy oil base material in the pipe, the C heavy oil having a predetermined stable characteristic can be prepared more efficiently and in a short time.

以下、本発明の一実施の形態を図面に基づいて説明する。図１は、本実施の形態における混合燃料油の調製装置である混合燃料油調製システムの概略構成を示すブロック図である。図２は、硫黄分０．８質量％のＣ重油の基材主原料の特性を表形式で示す説明図である。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of a mixed fuel oil preparation system which is a mixed fuel oil preparation apparatus in the present embodiment. FIG. 2 is an explanatory view showing the characteristics of the base material of C heavy oil having a sulfur content of 0.8 mass% in a tabular form.

〔混合燃料油調製システムの構成〕
図１において、１００は混合燃料油調製システムで、この混合燃料油調製システム１００は、例えば船舶におけるエンジンなどの内燃機関や燃焼バーナなどの燃料となるＣ重油である硫黄分０．８質量％のＣ重油（以下、０．８Ｃ重油と記載）などの混合燃料油を調製するためのシステムである。そして、混合燃料油調製システム１００は、輸送ライン２００と、管内混合装置３００と、貯蔵タンク４００と、などを備えている。 [Configuration of mixed fuel oil preparation system]
In FIG. 1, reference numeral 100 denotes a mixed fuel oil preparation system. This mixed fuel oil preparation system 100 has a sulfur content of 0.8% by mass, which is C heavy oil used as fuel for an internal combustion engine such as an engine in a ship or a combustion burner. This is a system for preparing a mixed fuel oil such as C heavy oil (hereinafter referred to as 0.8 C heavy oil). The mixed fuel oil preparation system 100 includes a transport line 200, an in-pipe mixing device 300, a storage tank 400, and the like.

輸送ライン２００は、混合燃料油の原料である重油基材が貯蔵される複数の基材タンク１０の略底部に一端がそれぞれ接続された複数の支管２１０を備えている。ここで、重油基材としては、例えば常圧蒸留残渣油（ＲＣ）と、減圧蒸留残渣油（ＶＲ）と、分解軽油（ＬＣＯ）と、接触分解装置塔底油（ＣＬＯ）と、直脱残油（ＤＳＲＣ）と、直留軽油（ＬＧＯ）と、などが利用される。なお、図１は、説明の都合上、ＬＧＯと、ＣＬＯと、流動接触分解装置（図中、ＦＣＣ装置と記載）１５から得られたＣＬＯと、硫黄分０．３質量％のＤＳＲＣと、を適宜混合し、混合燃料油として０．８Ｃ重油を調製するシステム構成を例示する。この０．８Ｃ重油の基材主原料の特性については、図２に表形式で示す。そして、輸送ライン２００が接続される基材タンク１０には、例えば５０℃〜８０℃に加温可能な図示しない加温装置が設けられている。そして、輸送ライン２００の支管２１０には、各基材タンク１０から重油基材を流出させる調整弁２１１と、支管２１０内を流通する例えば歯車タイプの流量計２１２と、などが設けられている。   The transport line 200 includes a plurality of branch pipes 210 each having one end connected to a substantially bottom portion of the plurality of base material tanks 10 in which a heavy oil base material that is a raw material of the mixed fuel oil is stored. Here, examples of the heavy oil base material include atmospheric distillation residue oil (RC), vacuum distillation residue oil (VR), cracked light oil (LCO), catalytic cracker tower bottom oil (CLO), and direct desorption residue. Oil (DSRC), straight run diesel oil (LGO), and the like are used. For convenience of explanation, FIG. 1 shows LGO, CLO, CLO obtained from a fluid catalytic cracking device (described as FCC device in the figure) 15, and DSRC having a sulfur content of 0.3 mass%. A system configuration in which 0.8C heavy oil is prepared as a mixed fuel oil by mixing as appropriate is illustrated. The characteristics of this 0.8C heavy oil base material are shown in tabular form in FIG. The base material tank 10 to which the transport line 200 is connected is provided with a heating device (not shown) that can be heated to, for example, 50 ° C. to 80 ° C. The branch pipe 210 of the transport line 200 is provided with an adjustment valve 211 that causes the heavy oil base material to flow out from each base tank 10, a gear type flow meter 212 that circulates in the branch pipe 210, and the like.

また、輸送ライン２００は、各支管２１０の他端が連結された１本の本管２２０を備えている。この一端に支管２１０が連結された本管２２０は、他端が貯蔵タンク４００に接続され、流通する重油基材を適宜混合して貯蔵タンク４００に流入させる。さらに、輸送ライン２００は、一端が貯蔵タンク４００に接続され、他端が本管２２０の一端側に接続される循環ライン２３０を有している。この循環ライン２３０は、支管と同様に、調整弁２３１と流量計２３２とを備えている。なお、輸送ライン２００には、保温するための構成、例えば断熱材やヒータなどの図示しない加温装置などを備えていてもよい。   The transportation line 200 includes a single main pipe 220 to which the other ends of the branch pipes 210 are connected. The main pipe 220 with one end connected to the branch pipe 210 is connected to the storage tank 400 at the other end, and appropriately mixes the circulating heavy oil base material into the storage tank 400. Further, the transport line 200 has a circulation line 230 having one end connected to the storage tank 400 and the other end connected to one end side of the main pipe 220. The circulation line 230 includes an adjustment valve 231 and a flow meter 232 as with the branch pipe. The transport line 200 may be provided with a configuration for keeping warm, for example, a heating device (not shown) such as a heat insulating material or a heater.

管内混合装置３００は、例えばスタティックミキサが用いられる。この管内混合装置３００は、輸送ライン２００の本管２２０に、循環ライン２３０が接続される位置より下流側に位置して配設されている。なお、スタティックミキサとしては、乱流促進する図示しない攪拌翼の形状としてはいずれのものでも適用できる。また、管内混合装置３００としては、スタティックミキサに限らず、例えば各種オリフィスプレートを利用するなど、流通する重油基材などを効率よく乱流させるいずれの構成のものが利用できる。さらに、管内混合装置３００としては、スタティックミキサやオリフィスプレートなどの動力源が不要な構成に限らず、動力により駆動して流通する重油基材を管内混合するいずれの構成も適用できる。   As the in-pipe mixing apparatus 300, for example, a static mixer is used. This in-pipe mixing apparatus 300 is disposed on the main pipe 220 of the transport line 200 so as to be located downstream from the position where the circulation line 230 is connected. As the static mixer, any shape of a stirring blade (not shown) that promotes turbulence can be applied. Further, the in-pipe mixing apparatus 300 is not limited to a static mixer, and any structure that efficiently turbulently circulates a circulating heavy oil base material such as various orifice plates can be used. Further, the in-pipe mixing device 300 is not limited to a configuration that does not require a power source such as a static mixer or an orifice plate, and any configuration that mixes a heavy oil base material that is driven by power and circulates in the tube can be applied.

貯蔵タンク４００は、輸送ライン２００の本管２２０内で管内混合装置３００にて効率よく重油基材が管内混合されて調製された混合燃料油を貯蔵するタンクである。この貯蔵タンク４００には、上述したように、輸送ライン２００の循環ライン２３０の一端が接続され、貯蔵する混合燃料油の少なくとも一部を本管２２０へ返送可能となっている。また、貯蔵タンク４００には、貯蔵する混合燃料油を攪拌する攪拌装置４１０が設けられている。この攪拌装置４１０は、電動モータ４１１と、この電動モータ４１１の図示しない出力軸に連結され回転駆動が伝達されて回転する攪拌翼４１２と、を備えている。また、貯蔵タンク４００は、基材タンク１０と同様に、混合燃料油を加温する加温装置を備えていてもよい。   The storage tank 400 is a tank that stores the mixed fuel oil prepared by mixing the heavy oil base material in the pipe efficiently in the pipe mixing device 300 in the main pipe 220 of the transport line 200. As described above, one end of the circulation line 230 of the transport line 200 is connected to the storage tank 400, and at least a part of the mixed fuel oil to be stored can be returned to the main pipe 220. The storage tank 400 is provided with a stirring device 410 that stirs the mixed fuel oil to be stored. The stirring device 410 includes an electric motor 411 and an agitating blade 412 that is connected to an output shaft (not shown) of the electric motor 411 and is rotated by rotation transmission. Further, the storage tank 400 may include a heating device that heats the mixed fuel oil, similarly to the base tank 10.

〔混合燃料油調製システムの作用〕
次に、上述した図１に示す混合燃料油調製システム１００の作用として、調製効率の実験について説明する。図３は、管内混合を実施しない比較例の調製システムの概略構成を示すブロック図である。 [Operation of mixed fuel oil preparation system]
Next, as an operation of the mixed fuel oil preparation system 100 shown in FIG. 1 described above, a preparation efficiency experiment will be described. FIG. 3 is a block diagram illustrating a schematic configuration of a comparative preparation system that does not perform in-tube mixing.

混合燃料油の調製効率の実験として、０．８Ｃ重油を調製する効率について実験した。また、比較例のシステム構成として、図３に示すような調製システム５００を利用した。この図３に示す調製システム５００は、図１に示す混合燃料油調製システム１００における輸送ライン２００に管内混合装置３００としてのスタティックミキサを設けない構成である。なお、図３において、同一の構成については、同一の符号を付して説明を省略する。   As an experiment on the preparation efficiency of the mixed fuel oil, an experiment was conducted on the efficiency of preparing 0.8C heavy oil. Moreover, the preparation system 500 as shown in FIG. 3 was utilized as a system configuration of the comparative example. The preparation system 500 shown in FIG. 3 has a configuration in which the static mixer as the in-pipe mixing device 300 is not provided in the transport line 200 in the mixed fuel oil preparation system 100 shown in FIG. In FIG. 3, the same components are denoted by the same reference numerals and description thereof is omitted.

また、実験における混合は、体積比でＬＣＯ：ＬＧＯ＝８５〜９０：１５〜１０となる条件とした。そして、各重油基材は、それぞれ５０℃〜８０℃に加温して混合させた。また、調製処理としては、各重油基材を基材タンク１０から所定の体積比となる状態に流出させて輸送ライン２００を介して貯蔵タンク４００へ流入させる。そして、図１に示す本実施の形態の混合燃料油調製システム１００では、貯蔵タンク４００における貯留量が循環ライン２３０にて返送可能な量となった時点で返送させた。そして、貯蔵タンク４００における流入終了後に、攪拌装置４１０によるタンク内混合を実施した。   Further, the mixing in the experiment was performed under the condition that LCO: LGO = 85 to 90:15 to 10 by volume ratio. And each heavy oil base material was heated and mixed at 50 to 80 degreeC, respectively. Moreover, as a preparation process, each heavy oil base material is made to flow out in the state which becomes a predetermined volume ratio from the base material tank 10, and is made to flow in into the storage tank 400 via the transport line 200. FIG. In the mixed fuel oil preparation system 100 according to the present embodiment shown in FIG. 1, the fuel is returned when the storage amount in the storage tank 400 reaches an amount that can be returned through the circulation line 230. And after completion | finish of inflow in the storage tank 400, the in-tank mixing by the stirring apparatus 410 was implemented.

その結果、比較例のシステム構成では、貯蔵タンク４００内における０．８Ｃ重油の組成が略均一となるまで、タンク内容量の３〜３．５倍の循環量で攪拌、すなわち貯蔵タンク４００に設けた攪拌装置４１０による攪拌で６０〜７５時間を要していた。一方、図１に示す本実施の形態によれば、攪拌装置４１０での攪拌時間が３時間程度で略均一組成の０．８Ｃ重油が得られた。   As a result, in the system configuration of the comparative example, until the composition of 0.8C heavy oil in the storage tank 400 becomes substantially uniform, stirring is performed at a circulation amount of 3 to 3.5 times the tank internal volume, that is, the storage tank 400 is provided. The stirring by the stirring device 410 required 60 to 75 hours. On the other hand, according to the present embodiment shown in FIG. 1, 0.8 C heavy oil having a substantially uniform composition was obtained with a stirring time of about 3 hours in the stirring device 410.

このように、スタティックミキサによる管内混合を実施することで、特に燃料として利用されるＣ重油の基材として利用される重油基材の密度差が０．１５g／cm3（１５℃）〜０．２３g／cm3（１５℃）で、５０℃における動粘度差が２００倍以上で大きく差があるものを混合する混合燃料油の調製でも、極めて短時間で混合でき、均一な組成の混合燃料油の調製効率を格段に向上できることが認められた。したがって、本実施の形態によれば、短時間に効率よく安定した特性の混合燃料油を容易に調製できることがわかる。このことから、混合が不十分で貯蔵タンク４００内で密度差が生じることを防止でき、混合燃料油として供給して燃焼させた際の燃焼変動を防止でき、安定した特性で混合燃料油を提供できる。 Thus, by carrying out the in-pipe mixing by the static mixer, the density difference of the heavy oil base material particularly used as the base material of C heavy oil used as the fuel is 0.15 g / cm 3 (15 ° C.) to 0.00. Even in the preparation of a mixed fuel oil that mixes those having a kinematic viscosity difference of 50 times or more at 50 ° C. at 23 g / cm 3 (15 ° C.), the mixed fuel oil can be mixed in a very short time and has a uniform composition It was found that the preparation efficiency of can be significantly improved. Therefore, according to the present embodiment, it can be understood that a mixed fuel oil having stable characteristics can be easily prepared in a short time. From this, it is possible to prevent insufficient mixing and density differences in the storage tank 400, prevent combustion fluctuations when supplied and burned as mixed fuel oil, and provide mixed fuel oil with stable characteristics it can.

〔混合燃料油調製システムの作用効果〕
上述したように、上記実施の形態によれば、特性が異なる複数の重油基材をそれぞれ貯蔵する複数の基材タンク１０と混合燃料油を貯蔵する貯蔵タンク４００とを連通する輸送ライン２００中に、複数の基材タンク１０から流出する重油基材を管内混合する管内混合装置３００を設けている。このため、密度差が大きく混合しにくい混合燃料油の基材となる各種重油基材が効率よく短時間で混合でき、例えば硫黄分含有量や燃焼熱あるいは粘度などの所定の安定した特性の混合燃料油を容易に調製できる。特に、０．８Ｃ重油などの基材の密度差や動粘度差が大きい重油系の混合燃料油の調製に好適である。 [Effects of mixed fuel oil preparation system]
As described above, according to the above-described embodiment, the transportation line 200 communicates the plurality of base tanks 10 that respectively store the plurality of heavy oil bases having different characteristics and the storage tank 400 that stores the mixed fuel oil. An in-tube mixing device 300 is provided for mixing the heavy oil base material flowing out from the plurality of base material tanks 10 in the tube. For this reason, various heavy oil base materials, which are mixed fuel oil base materials with large density differences and are difficult to mix, can be mixed efficiently and in a short time. For example, mixing with a predetermined stable characteristic such as sulfur content, combustion heat or viscosity. Fuel oil can be easily prepared. In particular, it is suitable for the preparation of heavy oil-based mixed fuel oil having a large density difference or kinematic viscosity difference of a base material such as 0.8C heavy oil.

そして、貯蔵タンク４００に貯留する混合燃料油を攪拌する攪拌装置４１０を設けている。このため、貯蔵中に重油基材が分離せず、貯蔵タンク４００内で密度差が生じることを防止でき、所定の特性の混合燃料油を長時間安定して供給できる。   And the stirring apparatus 410 which stirs the mixed fuel oil stored in the storage tank 400 is provided. For this reason, the heavy oil base material is not separated during storage, and it is possible to prevent the density difference from occurring in the storage tank 400, and it is possible to stably supply the mixed fuel oil having predetermined characteristics for a long time.

また、貯蔵タンク４００から混合燃料油を管内混合装置３００に返送する循環ライン２３０を輸送ライン２００に設け、重油基材とともに循環ライン２３０で返送した混合燃料油を管内混合装置３００で管内混合している。このため、より効率よく短時間で所定の安定した特性の混合燃料油を調製できる。   In addition, a circulation line 230 for returning the mixed fuel oil from the storage tank 400 to the in-pipe mixing device 300 is provided in the transport line 200, and the mixed fuel oil returned in the circulation line 230 together with the heavy oil base material is mixed in the tube by the in-pipe mixing device 300. Yes. For this reason, the mixed fuel oil having the predetermined stable characteristics can be prepared more efficiently and in a short time.

さらに、管内混合装置３００としてスタティックミキサを用いている。このため、効率よく短時間で重油基材を混合して所定の特性の混合燃料油を調製するための構成が容易に得られるとともに、動力源が不要であることから、調製コストの低減も容易に図れる。   Further, a static mixer is used as the in-pipe mixing device 300. For this reason, it is possible to easily obtain a configuration for preparing a mixed fuel oil having a predetermined characteristic by mixing heavy oil base materials efficiently and in a short time, and since a power source is unnecessary, it is easy to reduce the preparation cost. I can plan.

また、基材タンク１０に接続され重油基材の流出を調整する調整弁２１１および流量計２１２を備えた支管２１０を連結して１本とした輸送ライン２００の本管２２０に、管内混合装置３００を設けている。このため、支管２１０の連結による各重油基材の合流時にある程度混合される状態となり、管内混合装置３００での管内混合の効率がより向上し、装置構成の簡略化および混合燃料油のより効率的な調製が簡単な構成で容易に得られる。   Further, an in-pipe mixing device 300 is connected to a main pipe 220 of a transport line 200 that is connected to a base pipe 10 and is connected to a branch pipe 210 that is connected to a base tank 10 and adjusts the outflow of heavy oil base material and a flow meter 212. Is provided. For this reason, it will be in the state mixed to some extent at the time of joining of each heavy oil base material by the connection of the branch pipe 210, the efficiency of in-pipe mixing in the in-pipe mixing apparatus 300 improves more, simplification of an apparatus structure, and more efficient of mixed fuel oil Can be easily obtained with a simple structure.

〔実施の形態の変形〕
なお、本発明は、好適な実施の形態を挙げて説明したが、上述した実施の形態に限定されるものではなく、本発明の目的を達成できる範囲で以下に示されるような変形をも含むものである。 [Modification of Embodiment]
Although the present invention has been described with reference to a preferred embodiment, it is not limited to the above-described embodiment, and includes the following modifications as long as the object of the present invention can be achieved. It is a waste.

例えば、上述したように、０．８Ｃ重油の調製に限らず、各種混合燃料油を対象とすることができる。また、基材原料である重油基材としても、ＲＣ、ＶＲ、ＬＣＯ、ＣＬＯ、ＤＳＲＣ、ＬＧＯに限らず、他のいずれの重油基材を対象とすることができる。さらには、適宜添加剤などを加えてもよい。   For example, as described above, not only the preparation of 0.8C heavy oil but also various mixed fuel oils can be targeted. Further, the heavy oil base material that is the base material is not limited to RC, VR, LCO, CLO, DSRC, and LGO, and any other heavy oil base material can be targeted. Furthermore, you may add an additive etc. suitably.

そして、輸送ライン２００としては、支管２１０が１箇所で本管２２０に連結される構成に限らず、適宜連結されて最終的に１本の本管２２０となる状態にしてもよい。また、輸送ライン２００は、１本の本管２２０に限らず、並列に複数対設けてもよい。さらに、輸送ライン２００に循環ライン２３０を設けなくてもよい。   The transport line 200 is not limited to a configuration in which the branch pipe 210 is connected to the main pipe 220 at one place, but may be appropriately connected to finally become one main pipe 220. Further, the transport line 200 is not limited to one main pipe 220, and a plurality of pairs may be provided in parallel. Furthermore, it is not necessary to provide the circulation line 230 in the transport line 200.

また、本管２２０中に管内混合装置３００を設ける構成に限らず、管内混合装置３００の流入側に各支管２１０、さらには循環ライン２３０を連結し、管内混合装置３００の流出側に本管２２０を接続する構成としてもよい。すなわち、スタティックミキサのシェル部分を本管２２０として機能させるようにしてもよい。また、上述したように、管内混合装置３００は、スタティックミキサに限らず、管内混合機能を有するいずれの構成を適用できる。   Further, the configuration is not limited to the configuration in which the in-tube mixing device 300 is provided in the main tube 220, and each branch pipe 210 and the circulation line 230 are connected to the inflow side of the in-tube mixing device 300, and the main tube 220 is connected to the outflow side of the in-tube mixing device 300. It is good also as a structure which connects. That is, the shell portion of the static mixer may function as the main pipe 220. Further, as described above, the in-tube mixing device 300 is not limited to a static mixer, and any configuration having an in-tube mixing function can be applied.

さらに、貯蔵タンク４００には、攪拌装置４１０を設けなくてもよい。   Further, the storage tank 400 may not be provided with the stirring device 410.

その他、本発明は上述の実施の形態における具体的な構造および手順に限定されるものではなく、本発明の目的を達成できる範囲での変形、改良、設計の変更などは本発明に含まれるものである。   In addition, the present invention is not limited to the specific structures and procedures in the above-described embodiments, and modifications, improvements, design changes, and the like within the scope that can achieve the object of the present invention are included in the present invention. It is.

本発明は、船舶におけるエンジンなどの内燃機関や燃焼バーナなどの燃料となるＣ重油の調製に利用できる。 The present invention, Ru can be used in the preparation of C heavy oil as a fuel, such as internal combustion engine or a combustion burner, such as an engine in a ship.

本発明の一実施の形態における混合燃料油調製システムの概略構成を示すブロック図である。It is a block diagram which shows schematic structure of the mixed fuel oil preparation system in one embodiment of this invention. 前記実施の形態における硫黄分０．８質量％のＣ重油の基材主原料の特性を表形式で示す説明図である。It is explanatory drawing which shows the characteristic of the base material main raw material of C heavy oil with a sulfur content of 0.8 mass% in the said embodiment in a tabular form. 前記実施の形態における調製効率の実験で比較例とした調製システムの概略構成を示すブロック図である。It is a block diagram which shows schematic structure of the preparation system used as the comparative example in the experiment of the preparation efficiency in the said embodiment.

符号の説明Explanation of symbols

１０…基材タンク
１００…混合燃料油の調製装置である混合燃料油調製システム
２００…輸送ライン
２１０…支管
２２０…本管
２３０…循環ライン
３００…管内混合装置
４００…貯蔵タンク
４１０…攪拌装置 DESCRIPTION OF SYMBOLS 10 ... Base material tank 100 ... Mixed fuel oil preparation system 200 which is mixed fuel oil preparation apparatus 200 ... Transportation line 210 ... Branch pipe 220 ... Main pipe 230 ... Circulation line 300 ... In-pipe mixing apparatus 400 ... Storage tank 410 ... Stirring apparatus

Claims (3)

密度および動粘度が異なる複数の高粘度重油基材および低粘度重油基材を混合してＣ重油を調製する混合燃料油の調製装置であって、
前記高粘度重油基材および低粘度重油基材は、少なくとも接触分解装置塔底油、直留軽油および直脱残油であり、
前記Ｃ重油を貯蔵する貯蔵タンクと、
前記高粘度重油基材および低粘度重油基材がそれぞれ貯蔵される複数の基材タンクおよび前記貯蔵タンクを連通する輸送ラインと、
前記輸送ライン中に設けられ前記複数の基材タンクから流出する前記高粘度重油基材および低粘度重油基材を管内混合する管内混合装置と、を具備し、
前記輸送ラインは、前記基材タンクに接続され前記高粘度重油基材および低粘度重油基材の流出を調整する調整弁および流量計を備えた支管と、これら支管が連結され前記支管からそれぞれ流れ込む高粘度重油基材および低粘度重油基材を合流して合流重油基材とする１本の本管と、前記貯蔵タンクから前記Ｃ重油の少なくとも一部を前記管内混合装置に返送する循環ラインとを備え、
前記管内混合装置は、前記本管に設けられたスタティックミキサであり、前記本管で合流された後の前記合流重油基材とともに前記返送される混合燃料油を管内混合する
ことを特徴とした混合燃料油の調製装置。 A mixed fuel oil preparation apparatus for preparing C heavy oil by mixing a plurality of high viscosity heavy oil bases and low viscosity heavy oil bases having different densities and kinematic viscosities ,
The high-viscosity heavy oil base material and the low-viscosity heavy oil base material are at least a catalytic cracking apparatus tower bottom oil, straight-run gas oil, and direct desorption residual oil,
A storage tank for storing the C heavy oil ;
A plurality of base tanks in which the high-viscosity heavy oil base and the low-viscosity heavy oil base are stored, respectively, and a transport line that connects the storage tanks;
An in-pipe mixing device for mixing the high-viscosity heavy oil base material and the low-viscosity heavy oil base material that are provided in the transport line and flow out of the plurality of base material tanks;
The transport line is connected to the base tank, and is provided with an adjustment valve and a flow meter for adjusting the outflow of the high-viscosity heavy oil base and the low-viscosity heavy oil base, and these branch pipes are connected to flow from the branch pipe, respectively. One main pipe that joins the high-viscosity heavy oil base material and the low-viscosity heavy oil base material into a combined heavy oil base material, and a circulation line that returns at least part of the C heavy oil from the storage tank to the in-pipe mixing device. With
The in-pipe mixing device is a static mixer provided in the main pipe, and the mixed fuel oil returned together with the joined heavy oil base material merged in the main pipe is mixed in the pipe. Fuel oil preparation equipment. 請求項１に記載の混合燃料油の調製装置であって、
前記貯蔵タンクは、前記Ｃ重油を攪拌する攪拌装置を備えた
ことを特徴とした混合燃料油の調製装置。 An apparatus for preparing a mixed fuel oil according to claim 1,
The said storage tank was equipped with the stirring apparatus which stirs the said C heavy oil. The mixed fuel oil preparation apparatus characterized by the above-mentioned. 密度および動粘度が異なる複数の高粘度重油基材および低粘度重油基材を混合してＣ重油を調製する混合燃料油の調製方法であって、
前記高粘度重油基材および低粘度重油基材は、少なくとも接触分解装置塔底油、直留軽油および直脱残油であり、
スタティックミキサを用い、
各基材タンクにそれぞれ貯蔵された前記高粘度重油基材および低粘度重油基材を所定の割合で合流させた後の合流重油基材を前記スタティックミキサにより管内混合しつつ前記貯蔵タンクへ前記Ｃ重油として流入させ、かつ前記Ｃ重油の少なくとも一部を前記スタティックミキサへ返送して前記合流された後の前記合流重油基材とともに管内混合させる
ことを特徴とする混合燃料油の調製方法。 A method for preparing a mixed fuel oil comprising preparing a C heavy oil by mixing a plurality of high viscosity heavy oil bases and low viscosity heavy oil bases having different densities and kinematic viscosities ,
The high-viscosity heavy oil base material and the low-viscosity heavy oil base material are at least a catalytic cracking apparatus tower bottom oil, straight-run gas oil, and direct desorption residual oil,
Using a static mixer,
The C to the high viscosity heavy oil base and low viscosity heavy oil base the storage tank confluence heavy substrate after being merged with the tube mixed by the static mixer in a predetermined ratio stored respectively in each base tank A method for preparing a mixed fuel oil, wherein the mixed fuel oil is introduced as heavy oil , and at least a part of the C heavy oil is returned to the static mixer and mixed in the pipe together with the merged heavy oil base material after the merge .
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