JPS6343994A - Method of collecting crude low-boiling oil contained in coke oven gas - Google Patents
Method of collecting crude low-boiling oil contained in coke oven gasInfo
- Publication number
- JPS6343994A JPS6343994A JP18725086A JP18725086A JPS6343994A JP S6343994 A JPS6343994 A JP S6343994A JP 18725086 A JP18725086 A JP 18725086A JP 18725086 A JP18725086 A JP 18725086A JP S6343994 A JPS6343994 A JP S6343994A
- Authority
- JP
- Japan
- Prior art keywords
- oven gas
- coke oven
- tower
- thin
- packed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000571 coke Substances 0.000 title claims description 19
- 238000000034 method Methods 0.000 title claims description 17
- 238000009835 boiling Methods 0.000 title abstract 3
- 238000012856 packing Methods 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 abstract description 16
- 239000010935 stainless steel Substances 0.000 abstract description 4
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 4
- 229910000975 Carbon steel Inorganic materials 0.000 abstract description 2
- 229910001069 Ti alloy Inorganic materials 0.000 abstract description 2
- 239000010962 carbon steel Substances 0.000 abstract description 2
- 230000002745 absorbent Effects 0.000 abstract 3
- 239000002250 absorbent Substances 0.000 abstract 3
- 238000003475 lamination Methods 0.000 abstract 2
- 239000000945 filler Substances 0.000 description 13
- 239000004743 Polypropylene Substances 0.000 description 7
- -1 polypropylene Polymers 0.000 description 7
- 229920001155 polypropylene Polymers 0.000 description 7
- 239000010802 sludge Substances 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Landscapes
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、コークス炉ガス中に含有されるベンゼン、
トルエン、キシレン等の芳香族炭化水素を主成分とする
、いわゆる粗軽油を捕集する方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to benzene contained in coke oven gas,
The present invention relates to a method for collecting so-called crude light oil, which is mainly composed of aromatic hydrocarbons such as toluene and xylene.
従来の技術
］−ウス炉ガス中の粗軽油を捕集する方法としては、従
来から吸収油と接触させる方法が採用されている。Prior Art] As a method for collecting crude light oil in gaseous furnace gas, a method of bringing it into contact with absorbed oil has conventionally been adopted.
その方法としては、吸収油を充填物の表面に薄膜状で落
下させ、充填物の間隙を流れるガスと気液接触させる充
填塔方式と、塔内で吸収油を多数の微細な液滴としてガ
ス中に分散させ、塔底より送入されるコークス炉ガスと
向流接触させるスプレー塔方式がある。Two methods are available: the packed tower method, in which the absorbed oil is dropped in a thin film form onto the surface of the packing material, and is brought into gas-liquid contact with the gas flowing through the gaps between the packing materials; There is a spray tower method in which coke oven gas is dispersed inside the tower and brought into countercurrent contact with the coke oven gas introduced from the bottom of the tower.
代表的な充填塔方式によるコークス炉ガス中の粗軽油の
捕集方法としては、塔内にポリプロピレン成型物を充填
し、塔底より主として芳香族炭化水素よりなる粗軽油を
含有するガスを導入し、塔頂より吸収油を散布して４０
’Ｃ以下で向流接触せしめる方法（特公昭４９−１７８
４１号公報）、あるいはポリプロピレン成型物を充填材
とする工業的規模の充填塔でコークス炉ガスと吸収油と
を接触させコークス炉ガス中の粗軽油を捕集するに当た
り、充填塔内の１段当たりの充Ｊ眞高さを８００ｍ＋ｎ
以下とした多段の充填層を持つ１以上の充填塔を用いる
方法（特公昭５４−１６９６２号公報）、ポリプロピレ
ン成型物を充填材とする充填塔でコークス炉ガスと吸収
油とを接触させてコークス炉ガス中の粗軽油を捕集する
に当たり、充填塔内の１段当たりの充填高さを、段間隔
の０．１〜０．０５倍とし、かつ、ガス基準の１総括移
動車位当たりの高さが０．７〜１である多段の充填層を
有する少なくとも１個の充填塔を用いる方法（特公昭５
４−２９５２５．＠公報）、多段スプレー塩の各段に充
填高さとして、段間隔の０．１〜０．２１倍である充填
材を充填した少なくとも１個の多段スプレー塩を用いる
方法（特開昭６１−１２６１９５号公報）等が提案され
ている。A typical method for collecting crude light oil in coke oven gas using a packed tower method is to fill the tower with polypropylene moldings and introduce gas containing crude light oil, which is mainly composed of aromatic hydrocarbons, from the bottom of the tower. , by spraying absorbed oil from the top of the tower.
'Countercurrent contact method below C (Special Publication No. 49-178
41 Publication), or when collecting crude light oil in coke oven gas by bringing coke oven gas into contact with absorbed oil in an industrial-scale packed column using polypropylene molded material as a filler, one stage in the packed column is used. The height of the hit J is 800m+n
A method using one or more packed towers having multi-stage packed beds as described below (Japanese Patent Publication No. 16962/1989), in which coke oven gas and absorbed oil are brought into contact with each other in a packed tower filled with polypropylene molded material, and coke is produced. When collecting crude light oil in the furnace gas, the filling height per stage in the packed tower is set to 0.1 to 0.05 times the stage interval, and the height per one overall moving vehicle position of the gas standard is set to 0.1 to 0.05 times the stage interval. A method using at least one packed column having multi-stage packed beds with a diameter of 0.7 to 1 (Japanese Patent Publication No. 5
4-29525. @Publication), a method using at least one multi-stage spray salt filled with a filler whose filling height is 0.1 to 0.21 times the stage spacing in each stage of the multi-stage spray salt (Japanese Unexamined Patent Publication No. 1986- 126195) etc. have been proposed.
発明が解決しようとする問題点
しかし、充填塔方式は気液接触が良好で捕集効率が高い
という利点がある反面、充填材による圧力損失やスラッ
ジによる閉塞等により差圧が増大する欠点がある。Problems to be Solved by the Invention However, while the packed column system has the advantage of good gas-liquid contact and high collection efficiency, it has the disadvantage of increasing differential pressure due to pressure loss due to the packing material and blockage due to sludge, etc. .
又、上記ポリプロピレン成型物を充填材とする方法は、
ポリプロピレン成型物は軽量であるため、既設の無充填
塔を塔本体および基礎の補強を特に必要とせず、充填塔
に改造することができる等の優れた利点がある反面、ポ
リプロピレン成型物は、不規則充填材であるため、１段
当たりの充填高さを高くすると、スラッジ類の堆積によ
り差圧が増加し、薬剤洗浄等の対策が必要となる。この
ため、１段当たりの充填高さを８００ｍｍ以下とし、多
段の充填層を形成する必要がある。In addition, the method of using the above-mentioned polypropylene molded product as a filler is as follows:
Since polypropylene molded products are lightweight, they have excellent advantages such as being able to convert existing unpacked towers into packed towers without the need for reinforcement of the tower body or foundation. Since it is a regular packing material, if the filling height per stage is increased, the differential pressure will increase due to the accumulation of sludge, and countermeasures such as chemical cleaning will be required. Therefore, it is necessary to form a multi-stage filling layer by setting the filling height per stage to 800 mm or less.
ざらに、スプレー塔方式は圧力損失が少なく、閉塞の可
能性が少ないという利点がある反面、充填塔方式に比べ
吸収効率が低い欠点がある。Generally speaking, while the spray tower system has the advantage of low pressure loss and low possibility of blockage, it has the disadvantage of lower absorption efficiency than the packed tower system.
かかる現状にかんがみ、この発明は、充填塔方式の利点
を生かし、コークス炉ガス中の粗軽油を高収率で捕集す
ると共に、充填材による圧力損失が少なく、しかもスラ
ッジ類の堆積のほとんどないコークス炉ガス中の粗軽油
捕集方法を提供するものである。In view of the current situation, the present invention utilizes the advantages of the packed column system to collect crude light oil in coke oven gas at a high yield, with little pressure loss due to the filling material, and with almost no sludge accumulation. The present invention provides a method for collecting crude light oil in coke oven gas.
問題点を解決するための手段
この発明は、コークス炉ガス中の粗軽油を捕集するに際
し、塔内に薄肉軽量の金属製規則充填材、を積層充填し
た少なくとも１個の充填塔を用い、塔底よりコークス炉
ガスを導入し、塔頂より吸収油を散布して向流接触せし
めることを要旨とする。Means for Solving the Problems This invention uses at least one packed tower in which thin-walled, light-weight metal regular packing materials are stacked and packed in the tower when collecting crude light oil in coke oven gas, The gist of the system is to introduce coke oven gas from the bottom of the tower, and to spray absorbed oil from the top of the tower to create countercurrent contact.
この発明で使用する薄肉軽量の金属製規則充填材は種々
のものがあるが、例えば比表面積２５０ｍ２ ／ ｍ３
程度、重量 １００ ｋｇ ／ ｍ’前後、空間率９５
％以上のものが使用される。There are various types of thin and lightweight metal ordered filler used in this invention, but for example, one with a specific surface area of 250 m2/m3
Approximately, weight: around 100 kg/m', void ratio: 95
% or more is used.
又、金属製規則充填材の材質としては、構造用炭素鋼、
ステンレス鋼、チタニウム合金等が利用できるが、吸収
油に対し耐食性の大きなステンレス鋼の使用が望ましい
。In addition, the materials for the metal regular filler include structural carbon steel,
Stainless steel, titanium alloy, etc. can be used, but it is preferable to use stainless steel, which has high corrosion resistance against absorbed oil.
作 用
薄肉軽量の金属製規則充填材は、従来のポリプロピレン
製不規則充填材に比較し、重量が同程度で比表面積が大
きいため、充填容量が少なくてすむ。又、規則充填のた
め充填塔方式の利点である気液接触の良好性が保持され
、しかも圧力損失が少ない。さらに、吸収油の流速が大
きく、充填材の自浄作用によりスラッジが付着しにくい
。Function: Compared to conventional polypropylene irregular fillers, the thin and lightweight metal regular filler has a similar weight and a larger specific surface area, so it requires less filling capacity. Furthermore, due to regular packing, good gas-liquid contact, which is an advantage of the packed column system, is maintained, and pressure loss is small. Furthermore, the flow rate of the absorbed oil is high and the self-cleaning action of the filler material makes it difficult for sludge to adhere.
発明の効果
この発明は、薄肉軽量の金属製規則充填材を使用するこ
とを特徴としており、充填容量が少なくてすむため塔径
ならびに塔高を小さくできる。Effects of the Invention The present invention is characterized by the use of a thin and lightweight metal regular packing material, and since the packing capacity is small, the column diameter and column height can be reduced.
したがって、既設のスプレー塩を充填塔に改造する場合
には、気液接触効率が格段に向上するため、塔径ならび
に塔高を小さくできるので、薄肉軽量の金属製規則充填
材を既設スプレー塩より小径の内筒に積層充填したもの
を前もって準備しておき、既設塔頂部より挿入する工法
を採用すれ【（、工事期間を大幅に短縮することができ
、粗軽油の減産による損益を小さくできる。この発明者
等の試算によれば、前記ポリプロピレン製不規則充填材
を充填する場合の改造工事期間の約３７５程度に短縮す
ることができる。Therefore, when converting an existing spray salt into a packed column, the gas-liquid contact efficiency is greatly improved, and the column diameter and tower height can be made smaller. By preparing a small-diameter inner cylinder in advance and inserting it from the top of the existing tower, the construction period can be significantly shortened, and profits and losses due to reduced production of crude light oil can be reduced. According to the calculations made by the inventors, it is possible to shorten the remodeling work period by about 375 seconds compared to when filling with the polypropylene irregular filler.
又、充填材の自浄作用によりスラッジが付着しにくいた
め、長期間の連続運転に耐え得る。In addition, the self-cleaning action of the filler prevents sludge from adhering to it, so it can withstand continuous operation for a long period of time.
実 施 例 以下、この発明の実施例を示す。Example Examples of this invention will be shown below.
スプレー塔方式の２塔式吸収塔の後段の吸収塔（内径５
００ｋｍ、塔高３８５００ｍｍ ）に、比表面積２５０
ｍ２／ｍ３、重量１００ｋｑ／ ｍ３、空間率９８％、
ＳＵＳ ３０４製の薄肉軽量の金属製規則充填材（商品
名：住友メラバック）を、吸収塔より小径の内筒（径３
４００ｍｍ）に第１表に示す条件で充填し、吸収塔上部
より挿入して充填塔に改造した。そしてコークス炉ガス
を導入し、タール系吸収油によりコークス炉ガス中の粗
軽油を捕集し、充填塔に改造する前の捕集率と比較した
。その結果を第２表に示す。The latter stage of the spray tower type two-column absorption tower (inner diameter 5
00km, tower height 38500mm), specific surface area 250
m2/m3, weight 100kq/m3, space ratio 98%,
A thin-walled lightweight metal regular packing material made of SUS 304 (product name: Sumitomo Merabac) was packed into an inner cylinder with a diameter smaller than that of the absorption tower (diameter 3
400 mm) under the conditions shown in Table 1, and inserted from the top of the absorption tower to convert it into a packed tower. Then, coke oven gas was introduced, and crude light oil in the coke oven gas was collected using tar-based absorption oil, and the collection rate was compared with that before the conversion to a packed tower. The results are shown in Table 2.
第 １ 表
（以下余白）
第 ２ 表
第２表に示すとおり、薄肉軽量の金属製規則充填物を充
填したこの発明の場合は、改造前のスプレー塔方式に比
較し、粗軽油の捕集効率が約１０％向上しており、その
効果は明らかである。Table 1 (blank below) Table 2 As shown in Table 2, in the case of this invention filled with thin-walled and lightweight metal regular packing, the crude light oil collection efficiency is higher than that of the spray tower system before modification. is improved by about 10%, and the effect is clear.
又、６ケ月連続運転後、充填物を取り出し、スラッジの
付着の有無を調べた。その結果、充填材表面に吸収油が
界面張力により付着していることが観察されたが、スラ
ッジの付着は′Ｉ！３無でおった。After 6 months of continuous operation, the filler was taken out and checked for sludge adhesion. As a result, it was observed that the absorbed oil adhered to the surface of the filler due to interfacial tension, but the adhesion of sludge was 'I! I left with 3.
これは充填物の自）争作用等によるものと思われる。This seems to be due to the auto-articulation of the filler.
なお、浴出入口の差圧は、６ケ月経過後も殆ど差が認め
られなかった。In addition, almost no difference was observed in the differential pressure at the bath entrance and exit even after 6 months had passed.
Claims (1)
に際し、塔内に薄肉軽量の金属製規則充填物を積層充填
し、塔底よりコークス炉ガスを導入し、塔頂より吸収油
を散布して向流接触せしめることを特徴とするコークス
炉ガス中の粗軽油捕集方法。 ２、既設スプレー塔より小径の内筒に薄肉軽量の金属製
規則充填物を前もって積層充填し、該内筒を既設塔の塔
頂より挿入した塔を用いることを特徴とする特許請求の
範囲第１項記載のコークス炉ガス中の粗軽油捕集方法。[Scope of Claims] 1. When collecting crude light oil in coke oven gas by absorbing oil, thin and lightweight metal regular packings are stacked and packed in a column, and coke oven gas is introduced from the bottom of the column, A method for collecting crude light oil in coke oven gas, characterized by scattering absorbed oil from the top of the tower and bringing it into countercurrent contact. 2. A tower is used, in which an inner cylinder having a smaller diameter than the existing spray tower is filled in advance with thin-walled and lightweight metal regular packing, and the inner cylinder is inserted from the top of the existing tower. The method for collecting crude light oil in coke oven gas according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18725086A JPS6343994A (en) | 1986-08-08 | 1986-08-08 | Method of collecting crude low-boiling oil contained in coke oven gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18725086A JPS6343994A (en) | 1986-08-08 | 1986-08-08 | Method of collecting crude low-boiling oil contained in coke oven gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6343994A true JPS6343994A (en) | 1988-02-25 |
Family
ID=16202674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18725086A Pending JPS6343994A (en) | 1986-08-08 | 1986-08-08 | Method of collecting crude low-boiling oil contained in coke oven gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6343994A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006316205A (en) * | 2005-05-16 | 2006-11-24 | Nippon Steel Corp | Equipment for recovering light oil from coke oven gas |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS518115A (en) * | 1974-07-10 | 1976-01-22 | Hitachi Ltd | Igatano seisakuho |
| JPS5234587A (en) * | 1975-08-26 | 1977-03-16 | Wolff Friedrich | Machine for planely radiating ultraviolet rays |
| JPS5289563A (en) * | 1976-01-22 | 1977-07-27 | Ishii Tekkosho Kk | Packing material for inside of tower |
| JPS5416962A (en) * | 1977-07-07 | 1979-02-07 | Mitsubishi Electric Corp | Frquency synthesizer |
| JPS5429525A (en) * | 1977-08-04 | 1979-03-05 | Siemens Ag | Page recording medium moving device |
| JPS61126195A (en) * | 1984-11-22 | 1986-06-13 | Kawasaki Steel Corp | Recovery of light oil in coke oven gas |
-
1986
- 1986-08-08 JP JP18725086A patent/JPS6343994A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS518115A (en) * | 1974-07-10 | 1976-01-22 | Hitachi Ltd | Igatano seisakuho |
| JPS5234587A (en) * | 1975-08-26 | 1977-03-16 | Wolff Friedrich | Machine for planely radiating ultraviolet rays |
| JPS5289563A (en) * | 1976-01-22 | 1977-07-27 | Ishii Tekkosho Kk | Packing material for inside of tower |
| JPS5416962A (en) * | 1977-07-07 | 1979-02-07 | Mitsubishi Electric Corp | Frquency synthesizer |
| JPS5429525A (en) * | 1977-08-04 | 1979-03-05 | Siemens Ag | Page recording medium moving device |
| JPS61126195A (en) * | 1984-11-22 | 1986-06-13 | Kawasaki Steel Corp | Recovery of light oil in coke oven gas |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006316205A (en) * | 2005-05-16 | 2006-11-24 | Nippon Steel Corp | Equipment for recovering light oil from coke oven gas |
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