JPH01107082A - Method of precooling air of air separator - Google Patents
Method of precooling air of air separatorInfo
- Publication number
- JPH01107082A JPH01107082A JP62263880A JP26388087A JPH01107082A JP H01107082 A JPH01107082 A JP H01107082A JP 62263880 A JP62263880 A JP 62263880A JP 26388087 A JP26388087 A JP 26388087A JP H01107082 A JPH01107082 A JP H01107082A
- Authority
- JP
- Japan
- Prior art keywords
- air
- water
- cooling tower
- temperature
- amount
- 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
- 238000000034 method Methods 0.000 title claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000002912 waste gas Substances 0.000 claims abstract description 8
- 239000000498 cooling water Substances 0.000 claims abstract 3
- 238000005406 washing Methods 0.000 claims description 15
- 238000000926 separation method Methods 0.000 claims description 6
- 238000001179 sorption measurement Methods 0.000 abstract description 13
- 238000004140 cleaning Methods 0.000 abstract 6
- 238000001704 evaporation Methods 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04763—Start-up or control of the process; Details of the apparatus used
- F25J3/04769—Operation, control and regulation of the process; Instrumentation within the process
- F25J3/04775—Air purification and pre-cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
- F25J3/04157—Afterstage cooling and so-called "pre-cooling" of the feed air upstream the air purification unit and main heat exchange line
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2205/00—Processes or apparatus using other separation and/or other processing means
- F25J2205/30—Processes or apparatus using other separation and/or other processing means using a washing, e.g. "scrubbing" or bubble column for purification purposes
- F25J2205/32—Processes or apparatus using other separation and/or other processing means using a washing, e.g. "scrubbing" or bubble column for purification purposes as direct contact cooling tower to produce a cooled gas stream, e.g. direct contact after cooler [DCAC]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2205/00—Processes or apparatus using other separation and/or other processing means
- F25J2205/30—Processes or apparatus using other separation and/or other processing means using a washing, e.g. "scrubbing" or bubble column for purification purposes
- F25J2205/34—Processes or apparatus using other separation and/or other processing means using a washing, e.g. "scrubbing" or bubble column for purification purposes as evaporative cooling tower to produce chilled water, e.g. evaporative water chiller [EWC]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Separation Of Gases By Adsorption (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、空気分離装置に係り、特に吸着塔にて空気中
の水分を除去する空気前処理装置に好適な空気の予冷却
方法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an air separation device, and particularly to a method for precooling air suitable for an air pretreatment device that removes moisture from the air in an adsorption tower. It is.
従来の装置は第３図に示す如４、流量調節器４によって
水洗冷却塔１および蒸発冷却塔２を循環する水量を一定
とする制御を行なりていた。なお。In the conventional apparatus, as shown in FIG. 3, the amount of water circulating through the water washing cooling tower 1 and the evaporative cooling tower 2 is controlled to be constant using a flow rate regulator 4. In addition.
この種の装置として関連するものには、例えば特公昭６
１−５５０３２号等が挙げられる。Related devices of this type include, for example,
No. 1-55032 and the like.
通常空気分離装置では、製品の酸素および窒素の増減量
運転を行なうため、原料空気量に対する狡
廃ガス量の比率が変動する。上記砥来技術では、空気量
に対する循環水量を予め設定した比率となるよう一定の
流量制御を行なっていた。従って、上記変動により空気
量および廃ガス量が変動しても、循環水量は一定量であ
り、冷却システムとして最適の効率は得られず、水洗冷
却塔２の出口空気温度が所定温度まで冷却されず、該空
気中の水分含有量が増大するために吸着塔の負荷が増大
し、吸着塔の吸着可能時間の短縮や再生不足が生じ、深
冷分離部への水分等の流入、閉塞により装置としての連
続運転が不可となる問題があった。Normally, in an air separation device, the ratio of the amount of waste gas to the amount of raw material air fluctuates because the amount of oxygen and nitrogen in the product is increased or decreased. In the above-mentioned technique, a constant flow rate control is performed so that the amount of circulating water to the amount of air becomes a preset ratio. Therefore, even if the amount of air and waste gas fluctuate due to the above fluctuations, the amount of circulating water remains constant, and the optimal efficiency as a cooling system cannot be obtained, and the outlet air temperature of the water washing cooling tower 2 is cooled to a predetermined temperature. First, the load on the adsorption tower increases due to the increase in moisture content in the air, resulting in a shortening of the adsorption time of the adsorption tower and insufficient regeneration. There was a problem that made continuous operation impossible.
本発明の目的は、空気分離装置の増減量運転に対応して
、冷却動車な最適とし空気の予冷却法を提供することに
ある。SUMMARY OF THE INVENTION An object of the present invention is to provide an optimal method for precooling air in a cooling vehicle in response to increasing and decreasing operation of an air separation device.
上記目的は、冷却塔に循環する水量を冷却塔の空気出口
温度を検出して制御することにより、達成される。The above object is achieved by controlling the amount of water circulating in the cooling tower by sensing the air outlet temperature of the cooling tower.
空気は水洗冷却塔内で、上部より供給される循環水と直
接接触し熱交換により冷却される。空気との熱交換によ
り昇温した該循環水は蒸発冷却塔に送られ、深冷部から
の廃ガスと直接接触し熱交換し冷却され、再び水洗冷却
塔へと再循環される。Inside the water washing cooling tower, the air comes into direct contact with circulating water supplied from the top and is cooled by heat exchange. The circulating water, whose temperature has been raised by heat exchange with the air, is sent to the evaporative cooling tower, where it comes into direct contact with waste gas from the deep cooling section, where it is cooled by heat exchange, and then recirculated to the water washing cooling tower.
製品酸素および窒素の増減量に伴い空気量および廃ガス
量が変化した場合、水洗冷却塔と蒸発冷却塔の熱的バラ
ンスが変化し、この結果水洗冷却塔へ再循環する水温が
変化し、これに伴い空気冷却温度も変化する。If the amount of air and waste gas changes due to the increase or decrease of product oxygen and nitrogen, the thermal balance between the washing cooling tower and the evaporative cooling tower will change, resulting in a change in the temperature of the water recirculated to the washing cooling tower. The air cooling temperature also changes accordingly.
この冷却温度は第２図に示す如く循環水量により変化し
、システムとして最大の冷却効率を得られる最適な循環
水量が存在する。従って、水洗冷却塔出口の空気温度を
検出し、これにより循環水量を調節することにより、空
気の最適な予冷却が可能となる。As shown in FIG. 2, this cooling temperature changes depending on the amount of circulating water, and there is an optimum amount of circulating water that allows the system to obtain the maximum cooling efficiency. Therefore, by detecting the air temperature at the outlet of the water washing cooling tower and adjusting the amount of circulating water based on this, it is possible to optimally pre-cool the air.
以下、本発明の一実施例を第１図により説明する。 An embodiment of the present invention will be described below with reference to FIG.
前段にて圧縮機により昇圧された高温の空気は、水洗冷
却塔ｌにおいて上部より下降する循環水と直接接触して
熱交換することにより、約５℃程度まで冷却される。冷
却された空気は次行程の吸着塔（図示せず）へ送気され
る。一方、熱交換により昇温された循環水は蒸発冷却塔
２に送られ、はぼ大気圧下において、該蒸発冷却塔２内
で深冷部よりの廃ガスと直接接触して熱交換することに
より冷却され、水ポンプ３により昇圧されて水洗冷却塔
１へ再循環される。該循環水量は水洗冷却塔ｌの空気出
口に設けられた温度検出端と接触された温度調節器５に
より作動する調節弁６により調節される。The high-temperature air pressurized by the compressor in the previous stage is cooled to about 5° C. by directly contacting and exchanging heat with the circulating water descending from the top in the water washing cooling tower 1. The cooled air is sent to an adsorption tower (not shown) in the next step. On the other hand, the circulating water whose temperature has been raised by heat exchange is sent to the evaporative cooling tower 2, and in the evaporative cooling tower 2, it directly contacts and exchanges heat with the waste gas from the deep cooling section under almost atmospheric pressure. The water is cooled by the water pump 3, and the pressure is increased by the water pump 3, and the water is recirculated to the water washing cooling tower 1. The amount of circulating water is regulated by a control valve 6 operated by a temperature regulator 5 that is in contact with a temperature detection end provided at the air outlet of the water washing cooling tower 1.
本実施例によれば、空気量および廃ガス量の操作条件に
対応してシステムの冷却効率を高めることができ、最適
な空気の冷却効果を得ることができる。According to this embodiment, the cooling efficiency of the system can be increased in accordance with the operating conditions of the amount of air and the amount of waste gas, and an optimal air cooling effect can be obtained.
・ ３ ・
〔発明の効果〕
本発明によれば、吸着塔へ送気する空気温度を常に低啜
すべく最適な制御が可能であり、吸着塔に持ち込む水分
量を最少にすることができ、萱だ、吸着塔の操作温度を
下げることができる。また、これにより吸着塔の吸着材
充填量を低減できる経済的効果がある。更にソだ、吸着
温度を低く保持することにより再生温度も低くできるの
で、ランニングコストを低減できる。さらに、吸着塔の
負荷を常に最少にできるので、深冷部への水分等の流入
、閉塞も防止することができ、装置としての信頼性も高
めることができる。・ 3 ・ [Effects of the Invention] According to the present invention, it is possible to optimally control the temperature of the air sent to the adsorption tower to always keep it low, and the amount of water brought into the adsorption tower can be minimized. However, the operating temperature of the adsorption tower can be lowered. Moreover, this has the economical effect of reducing the amount of adsorbent packed in the adsorption tower. Furthermore, by keeping the adsorption temperature low, the regeneration temperature can also be lowered, reducing running costs. Furthermore, since the load on the adsorption tower can always be minimized, it is possible to prevent water from entering the deep cooling section and blockage, and the reliability of the apparatus can also be improved.
第１図は本発明の一実施例を示す空気分離装置の空気予
冷却装置の系統図、第２図は循環水量／空気量比と空気
温度の関係線図、第３図は従来の空気予冷却装置の系統
図である。
１・・・・・・水洗冷却塔、２・・・・・・蒸発冷却塔
、３・・・・・・水ポンプ、４・・・・・・流量調節器
、５・・・・・・温度調節器、６・・・・・・調節弁
代理人 弁理士 小 川 勝 男
−５，−４５２−
° ４ 。Fig. 1 is a system diagram of an air pre-cooling device for an air separation device showing an embodiment of the present invention, Fig. 2 is a relationship diagram between the circulating water amount/air amount ratio and air temperature, and Fig. 3 is a conventional air pre-cooling device. It is a system diagram of a cooling device. 1... Water washing cooling tower, 2... Evaporative cooling tower, 3... Water pump, 4... Flow rate regulator, 5... Temperature controller, 6... Control valve representative Patent attorney Katsuo Ogawa -5, -452- ° 4.
Claims (1)
塔で深冷部からの廃ガスにより冷却して再び水洗冷却塔
に循環させる空気分離装置の空気予冷却方法において、
水洗冷却塔出口の空気温度を検出して水洗冷却塔への循
環冷却水量を制御することを特徴とする空気分離装置の
空気予冷却方法。1. In an air pre-cooling method for an air separation device in which the cooling water that has cooled the raw air in the water washing cooling tower is cooled by the waste gas from the deep cooling section in the evaporative cooling tower and then circulated back to the water washing cooling tower,
A method for pre-cooling air in an air separation device, characterized in that the air temperature at the outlet of the water washing cooling tower is detected and the amount of circulating cooling water to the washing cooling tower is controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62263880A JPH01107082A (en) | 1987-10-21 | 1987-10-21 | Method of precooling air of air separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62263880A JPH01107082A (en) | 1987-10-21 | 1987-10-21 | Method of precooling air of air separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01107082A true JPH01107082A (en) | 1989-04-24 |
Family
ID=17395524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62263880A Pending JPH01107082A (en) | 1987-10-21 | 1987-10-21 | Method of precooling air of air separator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01107082A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003069248A1 (en) * | 2002-02-12 | 2003-08-21 | L'air Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L' Exploitation Des Procedes Georges Claude | Cooling process and apparatus for cooling a fluid using coolant water |
| EP1705443A1 (en) * | 2005-02-11 | 2006-09-27 | Linde Aktiengesellschaft | Process and apparatus for cooling a gas by direct heat exchange with a liquid refrigerant |
| US7536873B2 (en) | 2005-02-11 | 2009-05-26 | Linde Aktiengesellschaft | Process and device for cooling a gas by direct heat exchange with a cooling liquid |
| CN103604306A (en) * | 2013-11-21 | 2014-02-26 | 七台河宝泰隆甲醇有限公司 | Cooling method of compressed air in methanol air separation plant |
-
1987
- 1987-10-21 JP JP62263880A patent/JPH01107082A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003069248A1 (en) * | 2002-02-12 | 2003-08-21 | L'air Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L' Exploitation Des Procedes Georges Claude | Cooling process and apparatus for cooling a fluid using coolant water |
| US6912859B2 (en) | 2002-02-12 | 2005-07-05 | Air Liquide Process And Construction, Inc. | Method and apparatus for using a main air compressor to supplement a chill water system |
| CN1325870C (en) * | 2002-02-12 | 2007-07-11 | 液体空气乔治洛德方法利用和研究的具有监督和管理委员会的有限公司 | Cooling process and apparatus for cooling a fluid using cooling water |
| EP1705443A1 (en) * | 2005-02-11 | 2006-09-27 | Linde Aktiengesellschaft | Process and apparatus for cooling a gas by direct heat exchange with a liquid refrigerant |
| US7536873B2 (en) | 2005-02-11 | 2009-05-26 | Linde Aktiengesellschaft | Process and device for cooling a gas by direct heat exchange with a cooling liquid |
| CN103604306A (en) * | 2013-11-21 | 2014-02-26 | 七台河宝泰隆甲醇有限公司 | Cooling method of compressed air in methanol air separation plant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5752731B2 (en) | Method and system for optimizing argon recovery in an air separation unit | |
| EP0517427B1 (en) | Method and apparatus for concentrating chlorine gas | |
| EP0659464B1 (en) | Production of nitrogen using membranes with temperature tracking | |
| JPH07332845A (en) | Control method of capacity of cryogenic rectification system | |
| JPH01107082A (en) | Method of precooling air of air separator | |
| JPS63123422A (en) | Dehumidified air feeder | |
| US4261719A (en) | Method of and apparatus for controlling rate of material air supply to air separation plant | |
| US6622521B2 (en) | Adaptive control for air separation unit | |
| JPH0584418A (en) | Pretreatment of air separator and equipment therefor | |
| RU2047062C1 (en) | Method of and device for flow-temperature separation of krypton- xenon mixture | |
| KR100226933B1 (en) | Oxygen purity control system of air separating apparatus | |
| JP2550205B2 (en) | Air separation method and device | |
| JPS60251380A (en) | Method of controlling surface of liquid in lower tower of fractionating column | |
| JPS63197513A (en) | Temperature control method for inside of adsorption tower | |
| SU1018673A1 (en) | Method of controlling silicon chloride condensation process | |
| SU960504A1 (en) | Method of controlling air separation process in cryogenic unit | |
| JP3213848B2 (en) | Nitrogen production apparatus and control method thereof | |
| JPH0114509B2 (en) | ||
| JP2782355B2 (en) | Mixed gas liquefaction / separation apparatus, method for stopping operation thereof, and method for restarting the same | |
| JPH04203881A (en) | Control method of air separator | |
| JPS6128911B2 (en) | ||
| JPH0413629B2 (en) | ||
| JPS63137728A (en) | Gas dehumidifying device | |
| JPH07103645A (en) | Manufacture of argon | |
| JPH05149679A (en) | Air liquefying and separating device and its controlling method |