JPS62175575A - Method of treating chlorine gas - Google Patents
Method of treating chlorine gasInfo
- Publication number
- JPS62175575A JPS62175575A JP28235385A JP28235385A JPS62175575A JP S62175575 A JPS62175575 A JP S62175575A JP 28235385 A JP28235385 A JP 28235385A JP 28235385 A JP28235385 A JP 28235385A JP S62175575 A JPS62175575 A JP S62175575A
- Authority
- JP
- Japan
- Prior art keywords
- chlorine
- heat
- chlorine gas
- storage medium
- liquefied
- 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
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 title claims description 36
- 238000000034 method Methods 0.000 title claims description 16
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 27
- 239000000460 chlorine Substances 0.000 claims description 27
- 229910052801 chlorine Inorganic materials 0.000 claims description 27
- 238000005338 heat storage Methods 0.000 claims description 16
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 13
- 230000005496 eutectics Effects 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000011780 sodium chloride Substances 0.000 claims description 7
- 230000008014 freezing Effects 0.000 claims description 3
- 238000007710 freezing Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000009834 vaporization Methods 0.000 claims description 3
- 230000008016 vaporization Effects 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 8
- 239000002904 solvent Substances 0.000 description 5
- 230000004927 fusion Effects 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- -1 carbon tetrachloride Chemical class 0.000 description 1
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- WEQHQGJDZLDFID-UHFFFAOYSA-J thorium(iv) chloride Chemical compound Cl[Th](Cl)(Cl)Cl WEQHQGJDZLDFID-UHFFFAOYSA-J 0.000 description 1
Landscapes
- Separation By Low-Temperature Treatments (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は塩素ガスの処理方法に関し、さらに詳しくは塩
素ガスの製造と使用の間にあって、一時的に塩素を貯蔵
する経済的な処理方法に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for treating chlorine gas, and more particularly to an economical method for temporarily storing chlorine between the production and use of chlorine gas. It is something.
塩素ガスの製造は、一般的には塩化ナトリウム水溶液、
塩化カリ水溶液の電解により行われるが、製造と使用の
時間的ずれ、或いは量的ずれを生ずることが多く、製造
した塩素ガスの一時的な貯蔵が必要となる。このため、
従来より塩素を溶剤に溶解させて貯蔵する方法、或いは
加圧液化して貯蔵する方法が採られている。しかしこれ
らの方法は次の様な欠点を有している。Chlorine gas is generally produced using a sodium chloride aqueous solution,
Although it is carried out by electrolysis of an aqueous potassium chloride solution, there is often a lag in time or quantity between production and use, and temporary storage of the produced chlorine gas is required. For this reason,
Conventionally, chlorine has been stored by dissolving it in a solvent, or by liquefying it under pressure and storing it. However, these methods have the following drawbacks.
即ち、溶剤に溶解させる方法は塩素に対して不活性な溶
剤、例えば四塩化炭素等の塩素化炭化水素に塩素ガスを
溶解せしめて一時的に貯蔵する方法であるが、一定量の
溶剤に溶解する塩素量に制限があるため、大量に溶剤を
使用する必要があり、貯槽が大容量のものとなる。さら
に塩素の溶解・放散に際しては大量の熱の除去・付加が
必要となり、貯蔵コストは非常に高いものとなる。また
、塩素ガスの使用目的によっては使用に際して、同伴さ
れる溶剤の除去をしなければならないという欠点もある
。In other words, the method of dissolving chlorine gas in a solvent is a method of dissolving chlorine gas in a solvent that is inert to chlorine, such as chlorinated hydrocarbons such as carbon tetrachloride, and temporarily storing it. Since there is a limit to the amount of chlorine that can be used, it is necessary to use a large amount of solvent, which requires a large capacity storage tank. Furthermore, when dissolving and dissipating chlorine, it is necessary to remove and add a large amount of heat, resulting in extremely high storage costs. Furthermore, depending on the intended use of chlorine gas, there is also the drawback that entrained solvent must be removed before use.
以上の様な理由から塩素ガスを加圧冷却し、液化して貯
蔵する方法が一般的に行われている。For the reasons mentioned above, a method of cooling chlorine gas under pressure, liquefying it, and storing it is generally practiced.
しかし、この方法に於いても多大の経費を必要とする。However, even this method requires a large amount of expense.
即ち、電解槽から得られる塩素ガスの温度は４０〜６０
℃であり、液化温度は一３０〜０℃であるので、液化温
度まで冷却させるのに塩素１ ｋｇ当たり５〜１０ｋｃ
ａｌの熱量を除く必要がある。又凝縮の潜熱は約６９
ｋｃａ ｌ ／ ｋｇであるので、液化には約７０〜８
０ ｋｃａｌ ／ ｋｇの熱量を除去しなければならず
、蒸発に際してはこれに近い量の熱を必要とする。また
、実際には、この他さらに設備の吸熱骨の熱量の除去が
必要である。従って大容量の冷却機が必要であり、設備
は大規模となり、その運転コストも高くなるのである。That is, the temperature of chlorine gas obtained from the electrolytic cell is 40 to 60℃.
℃, and the liquefaction temperature is -30 to 0℃, so 5 to 10 kc of chlorine per 1 kg of chlorine is required to cool it to the liquefaction temperature.
It is necessary to remove the heat amount of al. Also, the latent heat of condensation is approximately 69
kcal/kg, so for liquefaction it takes about 70-8
0 kcal/kg of heat has to be removed, and evaporation requires a similar amount of heat. In addition, in practice, it is necessary to remove the amount of heat from the endothermic bones of the equipment. Therefore, a large-capacity cooler is required, and the equipment becomes large-scale and its operating cost becomes high.
本発明の目的は塩素ガスの一時的貯蔵法に関し、従来の
欠点を解消し、より経済的な処理方法を提供することに
ある。An object of the present invention is to overcome the conventional drawbacks of a method for temporarily storing chlorine gas and to provide a more economical method for processing chlorine gas.
即ち、本発明は断熱系において蓄熱媒体として塩化ナト
リウムと水との混合物又は水を使用し、塩素ガスを液化
し貯蔵する際には塩素ガスと該蓄熱媒体とを熱交換する
ことにより該蓄熱媒体を融解させ、液化塩素をガス化す
る際には、その気化熱により該蓄熱媒体を氷結させるこ
とを特徴とする塩素ガスの処理方法に関するものである
。That is, the present invention uses a mixture of sodium chloride and water or water as a heat storage medium in an adiabatic system, and when liquefying and storing chlorine gas, heat exchange is performed between the chlorine gas and the heat storage medium. The present invention relates to a method for treating chlorine gas, characterized in that when liquefied chlorine is melted and gasified, the heat storage medium is frozen by the heat of vaporization.
本発明の蓄熱媒体たる塩化すトリウムと水との混合物又
は水は熱容量が大きいことが使用における大いなる利点
となっている。ここで蓄熱媒体として最も好ましいもの
は塩化ナトリウムと水との共融共晶体である。この共融
共晶体は塩化ナトリウム２３．３１部及び水７６．６９
部からなり、その凝固点は−２１，１２℃、凝固（融解
）熱は約６５ｋｃａｌ／ｋｇである。即ち、熱容量が大
きい上にその凝固点が塩素の沸点に近いという利点があ
る。従ってそれだけ塩素の加圧エネルギーが少なくて済
むのである。The heat storage medium of the present invention, a mixture of thorium chloride and water, or water has a large heat capacity, which is a great advantage in use. The most preferred heat storage medium here is a eutectic eutectic of sodium chloride and water. This eutectic contains 23.31 parts of sodium chloride and 76.69 parts of water.
The freezing point is -21.12°C and the heat of solidification (melting) is about 65 kcal/kg. That is, it has the advantage that it has a large heat capacity and its freezing point is close to the boiling point of chlorine. Therefore, the energy required to pressurize chlorine can be reduced accordingly.
次に本発明の詳細を図に基づいて例示的に説明する。図
１において２は多管式の熱交換器を示しており、シェル
側には前述の蓄熱媒体が充填されており、また外部は断
熱材により覆っである。電解槽等で発生させた塩素ガス
は乾燥した後、加圧し、仕込みライン１より熱交換器２
のチューブ内に仕込まれる。熱交換器２内では冷媒とし
て蓄熱媒体の融解熱を利用して塩素ガスを冷却し液化さ
せるが、蓄熱媒体の融解熱で液化しない部分はライン５
を通り補助冷却機６と接触させることにより液化させ、
液化した塩素はチューブ内に一時的に貯蔵をする。尚、
塩素ガス中に水素、炭酸ガス、空気等の不純物が含まれ
ている場合は、排ガスライン３よりこれらのガスを系外
に放出することによって塩素の精製も同時に行うことが
できる。Next, details of the present invention will be explained by way of example based on the drawings. In FIG. 1, reference numeral 2 indicates a multi-tubular heat exchanger, the shell side of which is filled with the above-mentioned heat storage medium, and the outside covered with a heat insulating material. After drying the chlorine gas generated in the electrolytic tank, etc., it is pressurized and sent from the preparation line 1 to the heat exchanger 2.
It is placed in a tube. In the heat exchanger 2, the heat of fusion of the heat storage medium is used as a refrigerant to cool and liquefy the chlorine gas, but the portion that is not liquefied by the heat of fusion of the heat storage medium is in the line 5.
liquefied by passing through and coming into contact with the auxiliary cooler 6,
The liquefied chlorine is temporarily stored in the tube. still,
When the chlorine gas contains impurities such as hydrogen, carbon dioxide, and air, chlorine can be purified at the same time by discharging these gases from the exhaust gas line 3 to the outside of the system.
塩素を使用する場合はライン４より塩素をガスとして取
り出すが、塩素が気化熱を、蓄熱媒体より奪うことによ
って蓄熱媒体が凝固する。この操作をくりかえすことに
よりわずかの冷却熱を補充することにより効率良く塩素
を貯蔵し、使用することができるのである。When using chlorine, the chlorine is taken out as a gas through line 4, but the heat storage medium solidifies as the chlorine takes away the heat of vaporization from the heat storage medium. By repeating this operation and replenishing a small amount of cooling heat, chlorine can be efficiently stored and used.
また、別の方法は仕込みライン１より熱交換器２へ塩素
ガスを仕込む以前に塩素ガスを補助冷却機６により冷却
し、不足の冷却熱を予め補う方法であり、図２に例示を
しである。尚、熱交換器形式及び蓄熱媒体と塩素ガスと
の熱交換の形式については例示に限定されるものではな
く種々の形式をとることが可能である。Another method is to cool the chlorine gas with the auxiliary cooler 6 before charging the chlorine gas from the charging line 1 to the heat exchanger 2 to compensate for the insufficient cooling heat, as shown in FIG. be. Note that the type of heat exchanger and the type of heat exchange between the heat storage medium and chlorine gas are not limited to the examples shown, and various types can be used.
以下、図１に示すプロセスによる実施例を示して本発明
を更に説明する。Hereinafter, the present invention will be further explained by showing an example based on the process shown in FIG.
実施例１
図１において２の多管式の熱交換器は軟ｍ製で、その外
部は断熱材で被覆しである。熱交換器のシェル側には１
２００ ｉｔ、、の塩化ナトリウムと水との共融共晶体
（約１Ｍ）を充填しである。Example 1 The shell-and-tube heat exchanger 2 in FIG. 1 is made of soft mould, and the outside thereof is covered with a heat insulating material. 1 on the shell side of the heat exchanger
It was filled with 200 liters of a eutectic eutectic of sodium chloride and water (approximately 1M).
仕込みラインｌより塩素ガス（２０〜３０℃、２．２ａ
ｔｍ）を１０６０ ｋｇ仕込む。ガスは熱交換器２で共
融共晶体の融解熱によって冷却され、仕込んだ塩素ガス
の内９９０ ｋｇが液化した。残部の７０ｋｇはライン
５を通り補助冷却器６で冷媒と接触し液化した。この残
部の塩素ガスの液化に要した冷却熱は約５１５０ｋｃａ
ｌであり、仕込み全塩素量を液化するに必要な冷却熱量
の約７％であり、液化した塩素の温度は約−１５°Ｃで
あった。この液化した塩素全量をライン４よりガス（１
，３ａＬｍ）状でユーザーに送付した。Chlorine gas (20-30℃, 2.2a
Prepare 1060 kg of tm). The gas was cooled in heat exchanger 2 by the heat of fusion of the eutectic eutectic, and 990 kg of the charged chlorine gas was liquefied. The remaining 70 kg passed through line 5 and was liquefied in contact with the refrigerant in auxiliary cooler 6. The cooling heat required to liquefy this remaining chlorine gas is approximately 5150kca.
1, which was about 7% of the amount of cooling heat required to liquefy the total amount of chlorine charged, and the temperature of the liquefied chlorine was about -15°C. The entire amount of liquefied chlorine is transferred from line 4 to gas (1
, 3aLm) was sent to the user.
次いでライン１より前記と同一条件で塩素ガスを仕込み
液化したが、補助冷却器６で未凝縮の塩素ガスを液化す
るのに要した冷却熱は前回と同様に約５１５０ｋｃａｌ
であった。Next, chlorine gas was charged and liquefied from line 1 under the same conditions as above, but the cooling heat required to liquefy the uncondensed chlorine gas in auxiliary cooler 6 was about 5150 kcal, the same as before.
Met.
次に、この液化した塩素の内３５０ ｋｇをガス（１，
３ａｔｍ）状でとり出し、次いで再び仕込みライン１よ
り同量の塩素ガスを仕込み、不凝縮骨を補助冷却器６で
液化する操作をくりかえし行った。この操作で使用した
補助冷却熱量は仕込み全塩素量を液化するに必要な冷却
熱量の約７％であった。Next, 350 kg of this liquefied chlorine was transferred to gas (1,
3 atm), then the same amount of chlorine gas was charged again from the charging line 1, and the operation of liquefying the non-condensable bones in the auxiliary cooler 6 was repeated. The amount of auxiliary cooling heat used in this operation was about 7% of the amount of cooling heat required to liquefy the total amount of chlorine charged.
実施例２
実施例１の共融共晶体にかえて９８０ ｋｇの氷が熱交
換器のシェル側に充填しである。Example 2 Instead of the eutectic eutectic of Example 1, 980 kg of ice was packed into the shell side of the heat exchanger.
仕込みライン１より塩素ガス（４０〜５０°Ｃ，３，２
ａ Ｌｍ）を実施例１と同様に１０６０ ｋｇ仕込む。Chlorine gas (40-50°C, 3,2
a Lm) in an amount of 1060 kg in the same manner as in Example 1.
液化された塩素は９００ ｋｇであり、残部の１６０ｋ
ｇは補助冷却器６で冷媒と接触し液化した。この残部の
塩素ガスの液化に要した冷却熱量は全塩素を液化するに
必要な冷却熱量の約７％であり、液化した塩素の温度は
約２°Ｃであった。この液化した塩素全量をライン４よ
りガス状でユーザーに送付した。The liquefied chlorine was 900 kg, and the remaining 160 kg
g came into contact with the refrigerant in the auxiliary cooler 6 and liquefied. The amount of cooling heat required to liquefy the remaining chlorine gas was about 7% of the amount of cooling heat required to liquefy all the chlorine, and the temperature of the liquefied chlorine was about 2°C. The entire amount of liquefied chlorine was sent to the user in gas form through line 4.
次いでラインｌより前記と同一条件で塩素ガスを仕込み
液化したが、補助冷却器６で未凝縮の塩素ガスを液化す
るのに要した冷却熱は約５２００ｋｃａｌであり、全塩
素量を液化するのに必要な冷却熱量の約７％であり、以
後この操作をくりかえし同様の結果を得た。Next, chlorine gas was charged and liquefied from line 1 under the same conditions as above, but the cooling heat required to liquefy the uncondensed chlorine gas in the auxiliary cooler 6 was approximately 5,200 kcal, and it was necessary to liquefy the total amount of chlorine. This was about 7% of the required amount of cooling heat, and this operation was repeated thereafter to obtain similar results.
図１及び２は本発明の実施例を示すフローシートである
。
Ｉ：塩素ガス仕込みライン ２：熱交換器３：排ガスラ
イン ４，５：塩素ガスライン６：補助冷却器1 and 2 are flow sheets illustrating an embodiment of the present invention. I: Chlorine gas preparation line 2: Heat exchanger 3: Exhaust gas line 4, 5: Chlorine gas line 6: Auxiliary cooler
Claims (1)
との混合物又は水を使用し、塩素ガスを液化し貯蔵する
際には塩素ガスと該蓄熱媒体とを熱交換することにより
該蓄熱媒体を融解させ、液化塩素をガス化する際には、
その気化熱により該蓄熱媒体を氷結させることを特徴と
する塩素ガスの処理方法。 ２ 不足する冷却熱量を補助冷却器によって供給する特
許請求の範囲第１項記載の処理方法。 ３ 蓄熱媒体が塩化ナトリウムと水との共融共晶体であ
る特許請求の範囲第１項又は第２項記載の処理方法。[Scope of Claims] 1. A mixture of sodium chloride and water or water is used as a heat storage medium in an adiabatic system, and when chlorine gas is liquefied and stored, chlorine gas and the heat storage medium are heat exchanged. When melting the heat storage medium and gasifying liquefied chlorine,
A method for treating chlorine gas, which comprises freezing the heat storage medium using the heat of vaporization. 2. The treatment method according to claim 1, wherein the insufficient amount of cooling heat is supplied by an auxiliary cooler. 3. The treatment method according to claim 1 or 2, wherein the heat storage medium is a eutectic eutectic of sodium chloride and water.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22827685 | 1985-10-14 | ||
| JP60-228276 | 1985-10-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62175575A true JPS62175575A (en) | 1987-08-01 |
Family
ID=16873940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28235385A Pending JPS62175575A (en) | 1985-10-14 | 1985-12-16 | Method of treating chlorine gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62175575A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013521210A (en) * | 2010-03-06 | 2013-06-10 | ノラム インターナショナル リミテッド | Method and apparatus for vaporizing liquid chlorine containing nitrogen trichloride |
| JP2013521211A (en) * | 2010-03-06 | 2013-06-10 | ノラム インターナショナル リミテッド | Method for treating liquid chlorine containing nitrogen trichloride |
-
1985
- 1985-12-16 JP JP28235385A patent/JPS62175575A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013521210A (en) * | 2010-03-06 | 2013-06-10 | ノラム インターナショナル リミテッド | Method and apparatus for vaporizing liquid chlorine containing nitrogen trichloride |
| JP2013521211A (en) * | 2010-03-06 | 2013-06-10 | ノラム インターナショナル リミテッド | Method for treating liquid chlorine containing nitrogen trichloride |
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