JPS6295118A - Dehydration method using glycol - Google Patents
Dehydration method using glycolInfo
- Publication number
- JPS6295118A JPS6295118A JP60233520A JP23352085A JPS6295118A JP S6295118 A JPS6295118 A JP S6295118A JP 60233520 A JP60233520 A JP 60233520A JP 23352085 A JP23352085 A JP 23352085A JP S6295118 A JPS6295118 A JP S6295118A
- Authority
- JP
- Japan
- Prior art keywords
- glycol
- gas
- tower
- reboiler
- dehydration
- 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
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野］
本発明はグリコールを用いる脱水方法に関し、特に、天
然ガス圧送設備、その他の各種プラントに設置されるグ
ライコールデバイトレーターにおいて硫化水素を除去す
る工程を有する脱水方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a dehydration method using glycol, and in particular to a process for removing hydrogen sulfide in a glycol devitrator installed in natural gas pumping equipment and other various plants. The present invention relates to a dehydration method comprising:
（従来の技術）
第２図に示す通り、グリコール脱水塔１１の下部から出
て来る水分を多く含んだグリコール（以下、リッチグリ
コールＪはフラッシュドラム１２で王として炭化水素ガ
スをフラッシュ分離した后、グリコール再生リボイラ１
５で再生されグリコール゛脱水塔上部へ導かれる。フラ
ッシュドラムｆｊｒ−出たグリコールにはなお多量の硫
化水素が溶は込んでおり、この硫化水素はグリコール再
生リボイラ１５上部より水蒸気と共にベントスタック１
４全通して、大気へ排出されるかまたＶｉミツレアース
タック焼却される。(Prior Art) As shown in FIG. 2, glycol containing a large amount of water (hereinafter referred to as rich glycol J) comes out from the lower part of the glycol dehydration tower 11 after flash separation of hydrocarbon gas in the flash drum 12. Glycol regeneration reboiler 1
5 and guided to the upper part of the glycol dehydration tower. Flash drum fjr - A large amount of hydrogen sulfide is still dissolved in the discharged glycol, and this hydrogen sulfide is discharged from the upper part of the glycol regeneration reboiler 15 together with water vapor into the vent stack 1.
4. The entire product is either exhausted to the atmosphere or incinerated in the Vi Mitsrea stack.
硫化水素を含むガス（例、天然ガス）全グリコールで脱
水する設備において、グリコ−ｋｔｒｌその特性から水
と共に比較的多量の硫化水素を吸収した状態で脱水塔１
１工り再生系へ返される。このリッチグリコールに溶け
こんだ硫化水素の一部は炭化水素と共にその再生過程に
あるフラッシュドラム１２で分離除去されるがフラッシ
ュドラム１２全出たリッチグリコールはかなりの倹の硫
化水素を含んだままグリコール再生リポイラ１５へ供給
される為グリコール中の硫化水素に水蒸気とともにこの
再生リボイラ１５上部から大気圧の状態で排出される。In equipment for dehydrating gas containing hydrogen sulfide (e.g. natural gas) using whole glycol, the dehydration tower 1 is heated in a state in which a relatively large amount of hydrogen sulfide has been absorbed along with water due to the characteristics of Glyco-ktrl.
It is returned to the one-work regeneration system. A part of the hydrogen sulfide dissolved in this rich glycol is separated and removed along with the hydrocarbons in the flash drum 12 during its regeneration process, but the rich glycol that has completely come out of the flash drum 12 remains a glycol containing a considerable amount of hydrogen sulfide. In order to be supplied to the regeneration reboiler 15, the hydrogen sulfide in the glycol is discharged from the upper part of the regeneration reboiler 15 at atmospheric pressure together with water vapor.
この排出ガス全直接大気中へ排出するのが問題となる。The problem is that all of this exhaust gas is directly discharged into the atmosphere.
（発明が解決しようとする問題点）
本発明は従来のグリコールを用いる脱水方法の欠点を解
消し、処理ガスからグリコール中に水分とともに移行す
る硫化水素をグリコール再生用リボイラの前段で除くこ
とにより該リボイラの排気ガス全大気に放出すること全
可能としたグリコールを用いる脱水方法を提供しようと
するものである。(Problems to be Solved by the Invention) The present invention solves the drawbacks of conventional dehydration methods using glycol, and removes hydrogen sulfide, which migrates from the process gas into glycol together with moisture, at the front stage of the reboiler for glycol regeneration. It is an object of the present invention to provide a dehydration method using glycol that allows exhaust gas from a reboiler to be released into the entire atmosphere.
（問題点を解決するための手段］
本発明は硫化水素含有ガス全脱水塔でグリコールと接触
させて脱水し、ドライガス全回収するとともに、脱水塔
から排出されるグリコール全フラッシュドラムに導入し
てフラッシュ分離し、オフガスを除き、次いでグリコー
ルをグリコール再生リポイラに移して水全除き、再生グ
リコールを脱水塔に返して再び利用するグリコール全円
いる脱水方法において、フラッシュドラムでオフガスを
分離したグリコールヲ脱ガス塔に導入して再生カスと接
触させることによりグリコールから硫化水素全除去する
ことを特徴とするグリコール全円いる脱水方法である。(Means for Solving the Problems) The present invention dehydrates hydrogen sulfide-containing gas by contacting it with glycol in a total dehydration tower, recovers all of the dry gas, and introduces the entire glycol discharged from the dehydration tower into a flash drum. In the dehydration method that involves flash separation, off-gas is removed, and then the glycol is transferred to a glycol regeneration lipoiler to remove all water, and the regenerated glycol is returned to the dehydration tower for reuse. This is a complete glycol dehydration method characterized by completely removing hydrogen sulfide from glycol by introducing it into a gas tower and bringing it into contact with recycled residue.
なお、再生ガスは例えば天然ガスを用いることができる
。そして、脱ガス塔１５で硫化水素が除去されるので、
グリコール再生リボイラ１５から排出されるガス中の硫
化水素量全大巾に低くすることが出来、公害防止上有利
となる。また脱ガス塔μ圧力下で操作されるので脱ガス
塔１５からのオフカスは自己ガス処理設備の低圧ガス系
へ特別な設備？設けることなく回収出来る。Note that natural gas, for example, can be used as the regeneration gas. Then, since hydrogen sulfide is removed in the degassing tower 15,
The total amount of hydrogen sulfide in the gas discharged from the glycol regeneration reboiler 15 can be greatly reduced, which is advantageous in terms of pollution prevention. Also, since the degassing tower is operated under μ pressure, the off-gas from the degassing tower 15 is sent to the low pressure gas system of the self-gas treatment equipment using special equipment. It can be collected without any installation.
（実施例う
本発明の１つの実施例の概略フローシートを第１図に示
す。水及び硫化水素を含んだリッチグリコールが天然ガ
スの脱水塔１１の下部からグリコール再生系へ返される
。まずグリコールＶｉ５ ” ４ ｋｇ／ｃｒｌで操作
されるフラッシュドラム１２で溶存炭化水素ガスと硫化
水素の一部が放散分離される。フラッシュドラム１２を
出たグリコールは脱ガス塔１５の上部へ供給され、そこ
で再生ガス（脱硫天然ガスまたは天然ガス）と接触させ
る。脱ガス塔１５の上部から出九オフガスはフラッシュ
ドラムからの脱ガスと共にガス処理設備の低圧系（圧縮
機入口）へ返される。脱ガス塔１５の下部から出たグリ
コールはグリコール再生リボイラ１３へ導かれ、低濃度
の硫化水素を含むリボイラからの排ガスはベントスタッ
ク１４から排出される。(Example) A schematic flow sheet of one embodiment of the present invention is shown in FIG. 1. Rich glycol containing water and hydrogen sulfide is returned to the glycol regeneration system from the lower part of the natural gas dehydration tower 11. Dissolved hydrocarbon gas and a portion of hydrogen sulfide are separated by dissipation in the flash drum 12 operated at Vi5" 4 kg/crl. Glycol leaving the flash drum 12 is supplied to the upper part of the degassing tower 15, where it is regenerated Contact with gas (desulfurized natural gas or natural gas).The off-gas exiting from the upper part of the degassing tower 15 is returned to the low pressure system (compressor inlet) of the gas treatment equipment together with the degassing from the flash drum.Degassing tower 15 The glycol discharged from the lower part of the reactor is led to the glycol regeneration reboiler 13, and the exhaust gas from the reboiler containing a low concentration of hydrogen sulfide is discharged from the vent stack 14.
グリコールデバイトレーターのリッチグリコールの再生
過程に比較的高い圧力下にて操作される脱ガス塔１５全
設けることによジ、脱ガス塔１５からのオフガス回収を
低圧ガス系へ返すなど容易に行なうことが出来る。グラ
イコール再生リボイラ１５からでてくる排ガス中の鈍化
水素の量は従来法に比べ数倍から１０倍８度小さく出来
るのでスタックからその１１１１７１’出するかまたは
焼却するなど処理がしやすくなる。By providing the entire degassing tower 15 operated under relatively high pressure in the regeneration process of rich glycol in the glycol devitrator, off-gas recovery from the degassing tower 15 can be easily performed by returning it to the low-pressure gas system. I can do it. The amount of desensitized hydrogen in the exhaust gas coming out of the glycol regeneration reboiler 15 can be reduced by 8 degrees from several times to 10 times compared to the conventional method, making it easier to dispose of it by removing it from the stack or incinerating it.
第１図は本発明の方法を実施するためのデバイトレータ
ーの７０−シート図、第２図は従来法におけるデバイト
レーターのフロ−７−ト図である。
復代理人 内 １） 明
復代理人 萩 原 亮 −
復代理人 安 西 篤 夫FIG. 1 is a 70-sheet diagram of a devitrator for carrying out the method of the present invention, and FIG. 2 is a float diagram of a devitator in a conventional method. Sub-Agents 1) Meifuku Agent Ryo Hagiwara − Sub-Agent Atsuo Anzai
Claims (1)
水し、ドライガスを回収するとともに、脱水塔から排出
されるグリコールをフラッシュドラムに導入してフラッ
シュ分離し、オフガスを除き、次いでグリコールをグリ
コール再生リボイラに移して水を除き、再生グリコール
を脱水塔に返して再び利用するグリコールを用いる脱水
方法において、フラッシュドラムでオフガスを分離した
グリコールを脱ガス塔に導入して再生ガスと接触させる
ことによりグリコールから硫化水素を除去することを特
徴とするグリコールを用いる脱水方法。Hydrogen sulfide-containing gas is brought into contact with glycol in a dehydration tower to be dehydrated and dry gas is recovered, and the glycol discharged from the dehydration tower is introduced into a flash drum for flash separation to remove off-gas, and then the glycol is regenerated into glycol. In the dehydration method using glycol, in which the recycled glycol is transferred to a reboiler to remove water and then returned to the dehydration tower for reuse, the glycol from which off-gas has been separated in a flash drum is introduced into the degassing tower and brought into contact with the regenerated gas. A dehydration method using glycol, characterized by removing hydrogen sulfide from.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60233520A JPS6295118A (en) | 1985-10-21 | 1985-10-21 | Dehydration method using glycol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60233520A JPS6295118A (en) | 1985-10-21 | 1985-10-21 | Dehydration method using glycol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6295118A true JPS6295118A (en) | 1987-05-01 |
Family
ID=16956317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60233520A Pending JPS6295118A (en) | 1985-10-21 | 1985-10-21 | Dehydration method using glycol |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6295118A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010091638A1 (en) | 2009-02-16 | 2010-08-19 | 北京博源恒升高科技有限公司 | Method for removing sox from gas using polyethylene glycol |
| WO2015035878A1 (en) | 2013-09-10 | 2015-03-19 | 北京博源恒升高科技有限公司 | Method for removing sox from gas using modified polyethylene glycol |
| WO2015055104A1 (en) | 2013-10-15 | 2015-04-23 | 北京博源恒升高科技有限公司 | METHOD FOR REMOVAL OF SOx FROM GAS USING COMPOUND AMINE ALCOHOL SOLUTION |
| WO2015085879A1 (en) | 2013-12-12 | 2015-06-18 | 北京博源恒升高科技有限公司 | Method for removing sox from gas using polyol complex solution |
| WO2015085880A1 (en) | 2013-12-12 | 2015-06-18 | 北京博源恒升高科技有限公司 | Method for removing sox in gas by using ethylene glycol complex solution |
-
1985
- 1985-10-21 JP JP60233520A patent/JPS6295118A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010091638A1 (en) | 2009-02-16 | 2010-08-19 | 北京博源恒升高科技有限公司 | Method for removing sox from gas using polyethylene glycol |
| WO2015035878A1 (en) | 2013-09-10 | 2015-03-19 | 北京博源恒升高科技有限公司 | Method for removing sox from gas using modified polyethylene glycol |
| US9795917B2 (en) | 2013-09-10 | 2017-10-24 | Beijing Boyuan Hengsheng High-Technology Co., Ltd | Method for removing SOx from gas with modified polyethylene glycol |
| WO2015055104A1 (en) | 2013-10-15 | 2015-04-23 | 北京博源恒升高科技有限公司 | METHOD FOR REMOVAL OF SOx FROM GAS USING COMPOUND AMINE ALCOHOL SOLUTION |
| KR20160070129A (en) | 2013-10-15 | 2016-06-17 | 베이징 보위안 헝셩 하이-테크놀로지 컴퍼니 리미티드 | METHOD FOR REMOVAL OF SOx FROM GAS USING COMPOUND AMINE ALCOHOL SOLUTION |
| US9999852B2 (en) | 2013-10-15 | 2018-06-19 | Beijing Boyuan Hengsheng High-Technology Co., Ltd | Method for removing SOx from gas with compound alcohol-amine solution |
| WO2015085879A1 (en) | 2013-12-12 | 2015-06-18 | 北京博源恒升高科技有限公司 | Method for removing sox from gas using polyol complex solution |
| WO2015085880A1 (en) | 2013-12-12 | 2015-06-18 | 北京博源恒升高科技有限公司 | Method for removing sox in gas by using ethylene glycol complex solution |
| US9815017B2 (en) | 2013-12-12 | 2017-11-14 | Beijing Boyuan Hengsheng High-Technology Co., Ltd. | Method for removing SOx from gas using ethylene glycol composite solution |
| US10207218B2 (en) | 2013-12-12 | 2019-02-19 | Beijing Boyuan Hengsheng High-Technology Co., Ltd | Method for removing SOx from gas using polyol composite solution |
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