JPH026994B2 - - Google Patents
Info
- Publication number
- JPH026994B2 JPH026994B2 JP599582A JP599582A JPH026994B2 JP H026994 B2 JPH026994 B2 JP H026994B2 JP 599582 A JP599582 A JP 599582A JP 599582 A JP599582 A JP 599582A JP H026994 B2 JPH026994 B2 JP H026994B2
- Authority
- JP
- Japan
- Prior art keywords
- return gas
- heat exchanger
- cooling tower
- reversible heat
- air
- 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
- 239000007789 gas Substances 0.000 claims description 44
- 238000001816 cooling Methods 0.000 claims description 34
- 230000002441 reversible effect Effects 0.000 claims description 31
- 238000000926 separation method Methods 0.000 claims description 13
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 10
- 239000000498 cooling water Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 5
- 239000001569 carbon dioxide Substances 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 238000000859 sublimation Methods 0.000 claims description 2
- 230000008022 sublimation Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 2
Landscapes
- Separation By Low-Temperature Treatments (AREA)
Description
【発明の詳細な説明】
本発明は、蒸発冷却塔への戻りガス供給量変動
緩和法に係り、特に、空気分離装置の原料空気前
処理装置を構成する可逆熱交換器での流路切替時
における蒸発冷却塔への戻りガス供給量の変動を
緩和するのに好適な蒸発冷却塔への戻りガス供給
法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for alleviating fluctuations in the amount of return gas supplied to an evaporative cooling tower. The present invention relates to a method of supplying return gas to an evaporative cooling tower suitable for alleviating fluctuations in the amount of return gas supplied to the evaporative cooling tower.
第１図は、空気分離装置の従来の原料空気前処
理装置の系統図で、空気圧縮機１０で昇圧された
約５Kg／cm2Ｇ、100℃の原料空気は導管２０を経
て水洗冷却塔１１に供給され、冷却水と向流接触
することにより約25℃に冷却されると共に、原料
空気中のダスト及び水溶性ガスが水洗除去され
る。ダスト及び水溶性ガスが水洗除去された原料
空気は、導管２１、途中に切替弁５０が設けられ
た導管２２を経て可逆熱交換器１２に供給され
る。可逆熱交換器１２に供給された原料空気は周
期的に切替えられる流路４０を流通し、この間、
空気分離装置（図示省略）から導管２３，２４及
び逆止弁５１が設けられた導管２５をそれぞれ経
て可逆熱交換器１２に供給され流路４１，４２及
び周期的に切替えられる流路４３をそれぞれ流通
する製品窒素、製品酸素及び戻りガス、例えば、
不純窒素との熱交換により更に冷却される。この
冷却過程において、原料空気中の水分、炭酸ガス
は流路４０壁面に折出し原料空気は精製される。
流路４０，４３は切替弁５０及び導管２６に設け
られた切替弁５２により周期的に切替えられ、流
路４０を戻りガスが流通することにより流路４０
壁面に折出した水分、炭酸ガスは昇華除去され
る。その後、可逆熱交換器１２を出た戻りガスは
導管２６、途中に切替弁５３が設けられた導管２
７を経て蒸発冷却塔１３に供給され、水洗冷却塔
１１から導管２８を経て蒸発冷却塔１３に回収さ
れた冷却水を冷却した後に大気放出されるか、又
は導管２７より分岐し切替弁５４が設けられた導
管２９より大気放出される。又、蒸発冷却塔１３
で冷却された冷却水は、水ポンプ１４で昇圧され
導管３０を経て水洗冷却塔１１に供給される。
尚、可逆熱交換器１２で精製された原料空気は、
逆止弁５１を介し導管３１より空気分離装置に送
給される。 FIG. 1 is a system diagram of a conventional feed air pretreatment device for an air separation device, in which the feed air at a temperature of approximately 5 kg/cm 2 G and 100° C., which is pressurized by an air compressor 10, is sent through a conduit 20 to a water washing cooling tower 11. The air is cooled to about 25°C by countercurrent contact with cooling water, and the dust and water-soluble gases in the raw air are washed away. The raw air from which dust and water-soluble gases have been washed away is supplied to the reversible heat exchanger 12 through a conduit 21 and a conduit 22 in which a switching valve 50 is provided in the middle. The raw air supplied to the reversible heat exchanger 12 flows through a flow path 40 that is periodically switched, and during this period,
Flow paths 41, 42 and a periodically switched flow path 43 are supplied from an air separation device (not shown) to the reversible heat exchanger 12 through conduits 23, 24 and a conduit 25 provided with a check valve 51, respectively. Circulating product nitrogen, product oxygen and return gases, e.g.
It is further cooled by heat exchange with impure nitrogen. In this cooling process, moisture and carbon dioxide in the raw material air are deposited on the wall surface of the flow path 40, and the raw material air is purified.
The flow paths 40 and 43 are periodically switched by a switching valve 50 and a switching valve 52 provided in the conduit 26, and the flow path 40 is switched by the return gas flowing through the flow path 40.
Moisture and carbon dioxide deposited on the wall are removed by sublimation. Thereafter, the return gas leaving the reversible heat exchanger 12 is transferred to a conduit 26, and a conduit 2 with a switching valve 53 disposed in the middle.
The cooling water is supplied to the evaporative cooling tower 13 via the water washing cooling tower 11 via the conduit 28, and is then discharged into the atmosphere after being cooled. It is discharged to the atmosphere through a conduit 29 provided. Also, evaporative cooling tower 13
The cooled water is pressurized by the water pump 14 and supplied to the water washing cooling tower 11 via the conduit 30.
In addition, the raw material air purified by the reversible heat exchanger 12 is
It is fed from the conduit 31 via the check valve 51 to the air separation device.
このような原料空気前処理装置では、空気分離
装置からの戻りガスの全量を可逆熱交換器の周期
的に切替えられる流路に流通させているため、可
逆熱交換器での流路切替時における蒸発冷却塔へ
の戻りガス供給量が全量から０へ、０から全量へ
と大きく変動し、これにより、蒸発冷却塔の振
動、冷却水量の変動、冷却水並びに原料空気温度
の変動が生じるといつた欠点があつた。 In such a feed air pretreatment device, the entire amount of return gas from the air separation device is passed through the periodically switched flow path of the reversible heat exchanger, so when the flow path is switched in the reversible heat exchanger, When the return gas supply amount to the evaporative cooling tower fluctuates greatly from full volume to 0 and from 0 to full volume, this causes vibrations in the evaporative cooling tower, fluctuations in the amount of cooling water, and fluctuations in the temperature of the cooling water and raw air. There were some shortcomings.
本発明は、上記欠点の除去を目的としたもの
で、空気分離装置からの戻りガスを可逆熱交換器
の前流側で分流させ、該分流した戻りガスを該可
逆熱交換器に常時供給し、可逆熱交換器の後流側
で合流させ蒸発冷却塔に供給することを特徴と
し、可逆熱交換器での流路切替時における蒸発冷
却塔への戻りガス供給量の変動を緩和し、これに
より、蒸発冷却塔の振動、冷却水量の変動、冷却
水並びに原料空気温度の変動を抑制できる蒸発冷
却塔への戻りガス供給法を提供するものである。 The present invention is aimed at eliminating the above-mentioned drawbacks, and involves dividing the return gas from the air separation device on the upstream side of the reversible heat exchanger, and constantly supplying the divided return gas to the reversible heat exchanger. , which is characterized by combining the gas on the downstream side of the reversible heat exchanger and supplying it to the evaporative cooling tower, which alleviates fluctuations in the amount of return gas supplied to the evaporative cooling tower when switching channels in the reversible heat exchanger. This provides a method for supplying return gas to an evaporative cooling tower that can suppress vibrations of the evaporative cooling tower, fluctuations in the amount of cooling water, and fluctuations in the temperature of the cooling water and raw air.
本発明の一実施例を第２図により説明する。 An embodiment of the present invention will be explained with reference to FIG.
第２図は、本発明を実施した空気分離装置の原
料空気前処理装置の系統図で、尚、第１図と同一
装置、部品等は同一符号で示し説明を省略する。 FIG. 2 is a system diagram of a feed air pretreatment device of an air separation device embodying the present invention, and the same devices, parts, etc. as in FIG.
第２図で、可逆熱交換器１２には、切替えられ
ない流路４４が追加して設けられ、流路４４の入
口側には、可逆熱交換器１２の前流側で導管２５
より分岐された導管３２が、又、出口側には、可
逆熱交換器１２の後流側で導管２７より分岐され
た導管３３がそれぞれ連結されている。 In FIG. 2, the reversible heat exchanger 12 is additionally provided with a flow path 44 that cannot be switched, and on the inlet side of the flow path 44, a conduit 25 is provided on the upstream side of the reversible heat exchanger 12.
A conduit 32 branched from the conduit 27 on the downstream side of the reversible heat exchanger 12 is connected to the outlet side.
通常、酸素採りの空気分離装置では、周期的に
切替えられる流路壁面に折出した原料空気中の水
分、炭酸ガスを良好に昇華するには、戻りガス量
は原料空気量を100％とした場合、約60％の量で
十分である。ところが、空気分離装置（図示省
略）からは約79％の量の戻りガスが導管２５を経
て可逆熱交換器１２に供給される。そこで、約19
％の量余剰である戻りガスを導管３２を経て可逆
熱交換器１２に供給し、流路４４を流通する間
に、周期的に切替えられる流路４０を流通する原
料空気と熱交換させ、温度回復させた後に、導管
３３を経て、周期的に切替えられる流路４３を流
通した後、導管２７を流通する約60％の量の戻り
ガスに合流させ導管２７を経て蒸発冷却塔１３に
供給する。 Normally, in an air separation device that collects oxygen, the amount of return gas is set to 100% of the amount of feed air in order to sublimate moisture and carbon dioxide gas in the feed air that is precipitated on the wall of the flow path that is periodically switched. In this case, an amount of about 60% is sufficient. However, about 79% of the return gas from the air separation device (not shown) is supplied to the reversible heat exchanger 12 via the conduit 25. So, about 19
% excess return gas is supplied to the reversible heat exchanger 12 via the conduit 32, and while flowing through the flow path 44, heat is exchanged with the raw material air flowing through the flow path 40 which is periodically switched, and the temperature is increased. After being recovered, the gas passes through the conduit 33 and flows through the periodically switched flow path 43, and then joins with about 60% of the return gas flowing through the conduit 27 and is supplied to the evaporative cooling tower 13 through the conduit 27. .
本実施例のような蒸発冷却塔への戻りガス供給
量変動緩和法では、蒸発冷却塔に供給される戻り
ガス量は、可逆熱交換器での流路切替時において
も従来のように０とはならないので、その分だ
け、可逆熱交換器での流路切替時における蒸発冷
却塔への戻りガス供給量の変動を緩和することが
できる。 In the method for alleviating fluctuations in the amount of return gas supplied to the evaporative cooling tower as in this embodiment, the amount of return gas supplied to the evaporative cooling tower remains 0 even when switching the flow path in the reversible heat exchanger. Therefore, fluctuations in the amount of return gas supplied to the evaporative cooling tower at the time of channel switching in the reversible heat exchanger can be alleviated by that amount.
本発明は、以上説明したように、空気分離装置
の原料空気前処理装置を構成する可逆熱交換器で
の流路切替時における蒸発冷却塔への戻りガス供
給量の変動を緩和する方法において、戻りガスを
可逆熱交換器の前流側で分流させ、該分流した戻
りガスを可逆熱交換器に常時供給し、可逆熱交換
器の後流側で合流させ蒸発冷却塔に供給するとい
うことで、可逆熱交換器での流路切替時における
蒸発冷却塔への戻りガス供給量の変動を緩和でき
るので、蒸発冷却塔の振動、冷却水量の変動、冷
却水並びに原料空気温度の変動を抑制できる効果
がある。 As explained above, the present invention provides a method for alleviating fluctuations in the amount of return gas supplied to an evaporative cooling tower when switching channels in a reversible heat exchanger constituting a feed air pretreatment device of an air separation device. The return gas is divided on the upstream side of the reversible heat exchanger, and the divided return gas is constantly supplied to the reversible heat exchanger, and is combined on the downstream side of the reversible heat exchanger and supplied to the evaporative cooling tower. It is possible to reduce fluctuations in the amount of gas returned to the evaporative cooling tower when switching channels in the reversible heat exchanger, thereby suppressing vibrations in the evaporative cooling tower, fluctuations in the amount of cooling water, and fluctuations in the temperature of cooling water and feed air. effective.
第１図は、空気分離装置の従来の原料空気前処
理装置の系統図、第２図は、本発明の一実施例を
説明するもので、空気分離装置の本発明を実施し
た原料空気前処理装置の系統図である。
１０……空気圧縮機、１１……水洗冷却塔、１
２……可逆熱交換器、１３……蒸発冷却塔、２
５，２７，３２，３３……導管、４０，４３，４
４……流路。
Fig. 1 is a system diagram of a conventional feed air pretreatment device for an air separation device, and Fig. 2 is a diagram illustrating an embodiment of the present invention. It is a system diagram of a device. 10...Air compressor, 11...Water cooling tower, 1
2... Reversible heat exchanger, 13... Evaporative cooling tower, 2
5, 27, 32, 33... conduit, 40, 43, 4
4...Flow path.
Claims (1)
縮機で昇圧された原料空気を冷却水で冷却する水
洗冷却塔と、前記冷却水を空気分離装置からの戻
りガスで冷却する蒸発冷却塔と、前記水洗冷却塔
で冷却された原料空気を前記空気分離装置からの
製品窒素、製品酸素および前記戻りガスで冷却す
ると共に、前記原料空気中の水分、炭酸ガスを除
去する、前記原料空気の流路と前記戻りガスの流
路とが周期的に切替えられる可逆熱交換器とで構
成される原料空気前処理装置の前記蒸発冷却塔へ
の前記戻りガスの変動を緩和する方法において、 前記戻りガスを前記可逆熱交換器の前流側で分
流させ、該分流した戻りガスを該可逆熱交換器に
常時供給し、可逆熱交換器の後流側で合流させ前
記蒸発冷却塔に供給することを特徴とする蒸発冷
却塔への戻りガス供給法。 ２ 前記可逆熱交換器の前流側で分流させる前記
戻りガス量を、前記空気分離装置からの戻りガス
量と可逆熱交換器の前記流路に析出した水分、炭
酸ガスの昇華除去に必要な戻りガス量との差量と
する特許請求の範囲第１項記載の蒸発冷却塔への
戻りガス供給法。 ３ 前記分流させた戻りガスを前記可逆熱交換器
で温度回復させる特許請求の範囲第１項又は第２
項記載の蒸発冷却塔への戻りガス供給法。[Claims] 1. An air compressor that pressurizes raw material air, a water washing cooling tower that uses cooling water to cool the raw material air pressurized by the air compressor, and a water washing cooling tower that uses return gas from an air separation device to use the cooling water. The feed air cooled by the evaporative cooling tower and the water washing cooling tower is cooled by the product nitrogen, product oxygen, and the return gas from the air separation device, and at the same time, moisture and carbon dioxide in the feed air are removed. , reducing fluctuations in the return gas to the evaporative cooling tower of a feed air pretreatment device comprising a reversible heat exchanger in which the flow path of the feed air and the flow path of the return gas are periodically switched. In the method, the return gas is divided on the upstream side of the reversible heat exchanger, the divided return gas is constantly supplied to the reversible heat exchanger, and the return gas is combined on the downstream side of the reversible heat exchanger to achieve the evaporative cooling. A method of supplying return gas to an evaporative cooling tower, characterized in that the return gas is supplied to the tower. 2 The amount of return gas to be separated on the upstream side of the reversible heat exchanger is equal to the amount of return gas from the air separation device and the amount of water necessary for sublimation removal of moisture and carbon dioxide precipitated in the flow path of the reversible heat exchanger. A method for supplying return gas to an evaporative cooling tower according to claim 1, wherein the amount is the difference between the amount of return gas and the amount of return gas. 3. Claim 1 or 2, wherein the temperature of the divided return gas is recovered by the reversible heat exchanger.
Method of supplying return gas to the evaporative cooling tower as described in Section 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP599582A JPS58124187A (en) | 1982-01-20 | 1982-01-20 | Method of relaxing variation of quantity of return gas supplied to vaporizing cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP599582A JPS58124187A (en) | 1982-01-20 | 1982-01-20 | Method of relaxing variation of quantity of return gas supplied to vaporizing cooling tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58124187A JPS58124187A (en) | 1983-07-23 |
| JPH026994B2 true JPH026994B2 (en) | 1990-02-14 |
Family
ID=11626363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP599582A Granted JPS58124187A (en) | 1982-01-20 | 1982-01-20 | Method of relaxing variation of quantity of return gas supplied to vaporizing cooling tower |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58124187A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0414916U (en) * | 1990-05-30 | 1992-02-06 | ||
| JPH0513358U (en) * | 1991-08-08 | 1993-02-23 | 象印マホービン株式会社 | Tableware dryer |
-
1982
- 1982-01-20 JP JP599582A patent/JPS58124187A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0414916U (en) * | 1990-05-30 | 1992-02-06 | ||
| JPH0513358U (en) * | 1991-08-08 | 1993-02-23 | 象印マホービン株式会社 | Tableware dryer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58124187A (en) | 1983-07-23 |
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