JPS625656Y2 - - Google Patents
Info
- Publication number
- JPS625656Y2 JPS625656Y2 JP582680U JP582680U JPS625656Y2 JP S625656 Y2 JPS625656 Y2 JP S625656Y2 JP 582680 U JP582680 U JP 582680U JP 582680 U JP582680 U JP 582680U JP S625656 Y2 JPS625656 Y2 JP S625656Y2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- drain pot
- pipe
- mist
- process gas
- 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.)
- Expired
Links
- 238000000034 method Methods 0.000 claims description 26
- 238000005070 sampling Methods 0.000 claims description 14
- 238000009835 boiling Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 239000000428 dust Substances 0.000 claims description 8
- 239000003595 mist Substances 0.000 claims description 6
- 239000004215 Carbon black (E152) Substances 0.000 claims description 5
- 229930195733 hydrocarbon Natural products 0.000 claims description 5
- 150000002430 hydrocarbons Chemical class 0.000 claims description 5
- 238000010992 reflux Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 53
- 239000000498 cooling water Substances 0.000 description 8
- 238000000197 pyrolysis Methods 0.000 description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- -1 ethylene, propylene Chemical group 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Description
【考案の詳細な説明】
本考案はガスサンプリング装置に係り、特にナ
フサ熱分解炉ガスなどのプロセスガスを連続サン
プリングするための炭化水素系ガスサンプリング
装置に関するものである。[Detailed Description of the Invention] The present invention relates to a gas sampling device, and more particularly to a hydrocarbon gas sampling device for continuously sampling process gas such as naphtha pyrolysis furnace gas.
石油化学工業におけるナフサ熱分解プロセス
で、エチレン、プロピレンなどの収率の向上を図
るためには、熱分解炉より出たプロセスガス成分
を連続的に測定する必要がある。しかし熱分解ガ
スは分析するために温度を下げる過程でコーキン
グやタール分の固着が起り、このためプロセスガ
ス導入部の配管系の閉塞が短期的に生じメンテナ
ンスに多大の学力と時間がかかる等の問題があつ
た。 In order to improve the yield of ethylene, propylene, etc. in the naphtha pyrolysis process in the petrochemical industry, it is necessary to continuously measure the process gas components discharged from the pyrolysis furnace. However, during the process of lowering the temperature of pyrolysis gas for analysis, coking and tar particles stick to the gas, resulting in short-term blockage of the piping system at the process gas inlet, requiring a great deal of academic effort and time for maintenance. There was a problem.
またこの熱分解ガス中には徐々に変質してター
ル化するガスが含まれており、このため、プロセ
ス分析計例えばプロセスガスクロマトグラフで云
えば、カラムやバルブの内面がタールで汚染さ
れ、その寿命が短くなるばかりでなく、場合によ
つては配管系が詰ること等により測定不能とな
る。そのためメンテナンス費用も多くかかる等の
問題がある。 In addition, this pyrolysis gas contains gas that gradually changes in quality and turns into tar, and for this reason, in a process analyzer, such as a process gas chromatograph, the inner surfaces of columns and valves become contaminated with tar, which can shorten the service life of the gas. Not only will the length be shortened, but in some cases, the piping system may become clogged, making measurement impossible. Therefore, there are problems such as high maintenance costs.
本考案の目的は上記した従来技術の欠点をなく
し、プロセスガスの分析に際してメンテナンスの
軽減を考慮したガスサンプリング装置を提供する
にある。 An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art and to provide a gas sampling device that takes into account reduced maintenance when analyzing process gases.
ナフサ熱分解炉で生成したタール分を含む炭化
水素系高温ガス（プロセスガス）の低沸点成分を
連続分析するには、前記ガスの一部を試料ガスと
して検出器まで輸送する必要がある。しかし、こ
の間に前記試料ガス中に含まれる反応性のとんだ
成分が重合を起し、タール化し、配管を詰らせ
る。この有害成分は40℃以下に前記試料ガスを冷
却すると凝縮液中に含まれる。ナフサ分解炉のエ
チレン、プロピレン収率の向上のための熱分解炉
の管理には水素及び炭素数４以下の成分の組成分
析で十分である。そこで、プロセスガスの一部を
サンプリング装置へ導入した試料ガスを40℃以下
に冷却し、水蒸気および炭素数５以上のガスを冷
却し、タール分を含んだ凝縮液としてドレンポツ
トに流入させる。このドレンポツトでは凝縮液が
オーバフロして出る出口がプロセスガス導入部配
管となるような構造とし、主として水、ベンゼ
ン、トルエン、キシレンなどを含む高沸点成分を
プロセスガスへ戻るようにする。このような構造
にすることにより、ガス導入部配管に付着するタ
ールをこの凝縮液で洗浄し、配管を詰らせないよ
うにできる。さらにドレンポツトの中にガス導入
部配管を設置することにより試料ガスの予備冷却
が可能になり、40℃以下への冷却が効果的にでき
る。また高沸点成分をプロセスガスに戻すことに
より、凝縮液の廃棄の必要がなくなり、サンプリ
ング装置の安価な設置が可能となる。 In order to continuously analyze the low-boiling point components of a hydrocarbon-based high-temperature gas (process gas) containing tar produced in a naphtha pyrolysis furnace, it is necessary to transport a portion of the gas to a detector as a sample gas. However, during this time, the highly reactive components contained in the sample gas polymerize, turn into tar, and clog the pipes. This harmful component is contained in the condensate when the sample gas is cooled to below 40°C. Compositional analysis of hydrogen and components having 4 or less carbon atoms is sufficient for managing a pyrolysis furnace to improve the yield of ethylene and propylene in a naphtha cracking furnace. Therefore, a part of the process gas is introduced into the sampling device and the sample gas is cooled to below 40°C, and the water vapor and the gas having carbon number of 5 or more are cooled down and flowed into the drain pot as a condensate containing tar. This drain pot is constructed such that the outlet from which the condensate overflows serves as the process gas inlet piping, so that high boiling point components mainly containing water, benzene, toluene, xylene, etc. are returned to the process gas. By adopting such a structure, tar adhering to the gas introduction pipe can be washed with the condensate, thereby preventing clogging of the pipe. Furthermore, by installing the gas inlet piping inside the drain pot, it is possible to pre-cool the sample gas, effectively cooling it to below 40°C. Furthermore, by returning the high-boiling components to the process gas, there is no need to dispose of the condensate, and the sampling device can be installed at low cost.
実施例
以下本発明を実施例により、更に詳細に説明す
る。第１図は本発明の炭化水素系ガスサンプリン
グ装置の一例である。EXAMPLES The present invention will now be explained in more detail with reference to Examples. FIG. 1 is an example of a hydrocarbon gas sampling device of the present invention.
第１図においてプロセスガス１は、プロセスガ
ス配管２に設けられた試料ガス採取部３を通り、
バルブ４−１を通り、ドレンポツト５中の凝縮液
６（ベンゼン、トルエン、キシレン、水等を含む
液）で冷却されたプロセスガス導入配管７を通り
40〜70℃程度に予備冷却される。 In FIG. 1, a process gas 1 passes through a sample gas sampling section 3 provided in a process gas pipe 2,
It passes through the valve 4-1 and through the process gas introduction pipe 7 cooled by the condensate 6 (liquid containing benzene, toluene, xylene, water, etc.) in the drain pot 5.
It is pre-cooled to about 40-70℃.
次に予備冷却されたプロセスガスはドレンポツ
ト５の上方に設けられたガス導入部８から冷却水
９で一定温度に冷却された冷却部１０を通り高沸
点成分が凝縮され、この凝縮された高沸点成分は
ガス導入部８からドレンポツト５の凝縮液６中に
還流し、高沸点成分の除去されたプロセスガスは
ノズル部１１よりミスト・ダストセパレーター１
２に噴射され一定温度に冷却されて高沸点成分が
凝縮して生成したミストと共にダストがドレン出
口１３−１，１３−２を通つてドレンポツト５の
凝縮液６中に還流する。 Next, the precooled process gas passes from the gas introduction section 8 provided above the drain pot 5 to the cooling section 10, which is cooled to a constant temperature with cooling water 9, where high boiling point components are condensed. The components are refluxed from the gas introduction part 8 into the condensate 6 in the drain pot 5, and the process gas from which high boiling point components have been removed is passed from the nozzle part 11 to the mist/dust separator 1.
The dust is injected into the condensate 6 of the drain pot 5 through the drain outlets 13-1 and 13-2, and the dust is generated by condensing the high boiling point components and being cooled to a constant temperature.
この凝縮液６の量が増加すると、この凝縮液の
余分なものはプロセスガス導入配管７内壁をつた
わつてプロセスガス配管２に戻る。その際プロセ
スガス導入配管７内壁に付着しているタール等が
溶解、除去され配管閉塞が防止される。 When the amount of this condensed liquid 6 increases, the excess of this condensed liquid passes through the inner wall of the process gas introduction pipe 7 and returns to the process gas pipe 2. At this time, tar and the like adhering to the inner wall of the process gas introduction pipe 7 are dissolved and removed, thereby preventing pipe clogging.
一方分析される低沸点成分は、分析ガス導入配
管２１、バルブ４−４を通つて分析計（図示せ
ず）に導入され、分析される。 On the other hand, the low boiling point components to be analyzed are introduced into an analyzer (not shown) through the analysis gas introduction pipe 21 and valve 4-4, and analyzed.
なお前記冷却部の冷却は、冷却水９（主に水道
水）を冷却、水配管１４、バルブ４−２を通つて
高沸点トラツプ部１５に導びき、冷却水９の水温
を温度検出器１６で検出する。冷却水９の温度調
節は、蒸気を蒸気入口１７から温度調節弁１８を
通つて冷却水９中の蒸気出口１９へ流すことによ
つて25〜40℃に調節している。 In order to cool the cooling section, the cooling water 9 (mainly tap water) is cooled and guided to the high boiling point trap section 15 through the water pipe 14 and the valve 4-2, and the temperature of the cooling water 9 is measured by a temperature detector 16. Detect with. The temperature of the cooling water 9 is adjusted to 25 to 40°C by flowing steam from a steam inlet 17 through a temperature control valve 18 to a steam outlet 19 in the cooling water 9.
このように第１図の装置で冷却水の温度調節を
行なうのは、第１図の装置でのガス冷却温度とガ
ス損失率の関係は第２図に示すデータＡ，Ｂ，Ｃ
の如くなり、Ｂ（C4成分）では25℃以下から特
にガス損失率が大きくなるからである。また、こ
の冷却水９は冷却配管２０によりドレンポツト１
５内の凝縮液６の冷却にも使用され、排出され
る。 The reason why the temperature of the cooling water is adjusted in the device shown in FIG. 1 is that the relationship between the gas cooling temperature and the gas loss rate in the device shown in FIG.
This is because B ( C4 component) has a particularly large gas loss rate below 25°C. In addition, this cooling water 9 is supplied to the drain pot 1 through a cooling pipe 20.
It is also used to cool the condensate 6 in 5 and is discharged.
また、ドレンポツト１５内には、バルブ４−３
から冷却水９を導入して満しておきサンプリング
を開始する。 Also, inside the drain pot 15 is a valve 4-3.
Cooling water 9 is introduced from the tank to fill it up and sampling is started.
試料ガス採取部３でのプロセスガス２３の温度
は約400℃であり、ガス採取量は１〜２／min
が適当で、ガス導入管７内でのガス滞留時間は
0.5〜２分間程度が好適である。 The temperature of the process gas 23 in the sample gas sampling section 3 is approximately 400°C, and the gas sampling rate is 1 to 2/min.
is appropriate, and the gas residence time in the gas introduction pipe 7 is
Approximately 0.5 to 2 minutes is suitable.
第１図は本考案のガスサンプリング装置の一例
を示す図、第２図は実験データである。
１……プロセスガス、２……プロセス配管、３
……試料ガス採取部、５……ドレンポツト、１０
……冷却部、１１……ノズル部、１２……ミス
ト・ダストセパレーター。
FIG. 1 shows an example of the gas sampling device of the present invention, and FIG. 2 shows experimental data. 1...Process gas, 2...Process piping, 3
... Sample gas sampling section, 5 ... Drain pot, 10
... Cooling section, 11 ... Nozzle section, 12 ... Mist/dust separator.
Claims (1)
るプロセスガス配管とドレンポツトとを接続し、
かつこのドレンポツト中に突出して配管されたプ
ロセスガス導入配管、前記ドレンポツト上方に接
続して設けられた前記炭化水素系ガスを主成分と
する高温ガス中の高沸点成分を凝縮させる冷却
部、この冷却部に接続して設けられたミスト・ダ
ストセパレーターと、このミスト・ダストセパレ
ーターで分離されたミスト・ダストを前記ドレー
ンポツトへ還流させる配管と、前記ミスト・ダス
トセパレーターで分離された試料ガスを分析装置
に導びく配管よりなることを特徴とするガスサン
プリング装置。 Connect the process gas pipe through which high-temperature gas containing hydrocarbon gas as the main component flows and the drain pot.
and a process gas introduction pipe protruding into the drain pot, a cooling section connected above the drain pot for condensing high-boiling components in the high-temperature gas containing hydrocarbon gas as a main component, and cooling the drain pot. A mist/dust separator connected to the section, piping for refluxing the mist/dust separated by the mist/dust separator to the drain pot, and a pipe for returning the sample gas separated by the mist/dust separator to the analyzer. A gas sampling device characterized by comprising a leading pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP582680U JPS625656Y2 (en) | 1980-01-23 | 1980-01-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP582680U JPS625656Y2 (en) | 1980-01-23 | 1980-01-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56109052U JPS56109052U (en) | 1981-08-24 |
| JPS625656Y2 true JPS625656Y2 (en) | 1987-02-09 |
Family
ID=29602494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP582680U Expired JPS625656Y2 (en) | 1980-01-23 | 1980-01-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS625656Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102375041B (en) * | 2011-09-16 | 2015-03-04 | 武汉市天虹仪表有限责任公司 | Online volatile organic matter analyzer and using method thereof |
-
1980
- 1980-01-23 JP JP582680U patent/JPS625656Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56109052U (en) | 1981-08-24 |
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