JPH0674451B2 - Gas humidity control method - Google Patents
Gas humidity control methodInfo
- Publication number
- JPH0674451B2 JPH0674451B2 JP58075618A JP7561883A JPH0674451B2 JP H0674451 B2 JPH0674451 B2 JP H0674451B2 JP 58075618 A JP58075618 A JP 58075618A JP 7561883 A JP7561883 A JP 7561883A JP H0674451 B2 JPH0674451 B2 JP H0674451B2
- Authority
- JP
- Japan
- Prior art keywords
- series
- gas
- flow rate
- dry gas
- dew point
- 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 - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 238000002156 mixing Methods 0.000 claims description 8
- 239000012808 vapor phase Substances 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 description 125
- 238000000137 annealing Methods 0.000 description 18
- 239000007921 spray Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/76—Adjusting the composition of the atmosphere
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Air Humidification (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、工業用ガス等のガスを調湿するガス調湿法
に関するものである。TECHNICAL FIELD The present invention relates to a gas humidity control method for controlling the humidity of a gas such as an industrial gas.
〔従来の技術〕 工業用ガスは、水蒸気を付与され調湿されて使用される
ことが多い。例えば、冷延鋼板の焼鈍炉では、焼鈍中の
鋼板表面のカーボン汚れの防止および加窒抑制を行うた
め、窒素および水素を主成分とする焼鈍雰囲気ガスを調
湿して炉内に供給することが行われている。しかも、焼
鈍炉では、焼鈍の工程中において焼鈍の程度に合わせて
雰囲気ガスを、露点温度で−40℃から＋40℃までの広い
範囲のうちの適宜の露点に精密に制御することが求めら
れる。しかしながら、現実にこのようにすることは容易
ではない。すなわち、一基の焼鈍炉だけでも上記のよう
に雰囲気ガスの露点を精密に制御することは容易でな
い。ところが、通常、焼鈍炉は複数基が一セツトになつ
ているため、複数基の焼鈍炉のそれぞれについて焼鈍の
程度に合わせて雰囲気ガスの露点を各別に精密に制御す
ることが求められる。しかしながら、このようにするこ
とは極めて困難である。[Prior Art] Industrial gases are often used after being subjected to moisture control and humidity adjustment. For example, in a cold-rolled steel sheet annealing furnace, in order to prevent carbon stains on the surface of the steel sheet during annealing and to suppress nitrification, an annealing atmosphere gas containing nitrogen and hydrogen as main components is conditioned and supplied into the furnace. Is being done. Moreover, in the annealing furnace, it is required that the atmosphere gas be precisely controlled during the annealing process to an appropriate dew point within a wide range from −40 ° C. to + 40 ° C. in dew point temperature in accordance with the degree of annealing. However, in reality it is not easy to do this. That is, it is not easy to precisely control the dew point of the atmospheric gas as described above even with only one annealing furnace. However, since the annealing furnace usually has a plurality of units in one set, it is required to precisely control the dew point of the atmosphere gas for each of the plurality of annealing furnaces in accordance with the degree of annealing. However, this is extremely difficult to do.
ところで、従来の工業用ガスの調湿法には、電気ボイ
ラー等で発生させた水蒸気を、ガスミキサーに導入する
と同時に、乾燥ガスも導入し、ガスミキサー中で両者を
混合することにより乾燥ガスを調湿する際、上記水蒸気
の吹込量を制御して調湿度合を制御するという方法（特
開昭50−75906号）、乾燥ガスを温水槽中に吹込みそ
の吹込みガス気泡が温水表面に浮上する間に加湿し、こ
の加湿ガスを、これとは別な系列の流路で流される乾燥
ガスと混合して調湿する方法とがある。しかしながら、
このような方法では、焼鈍炉に要求される、精密で、し
かも各炉ごとの調湿に十分応えることができない。すな
わち、の方法は、高圧水蒸気を直接乾燥ガスに吹込む
ため、低露点側で制御を行おうとする場合には、吹込み
水蒸気量の僅かな変動によつて露点が著しく変動するよ
うになり、精密な制御が困難となる。極端な場合には、
露点のハンチング現象を伴い制御不能の状態になる。ま
た、の方法は、乾燥ガスの流量変動に伴い温水槽内に
吹込まれるガス気泡の状態が変化するため、一定露点に
調節することが困難である。しかもこの流量変動は、ガ
ス吹込み時の圧力を変動させ加湿されたガスの圧力を変
動させるため、その後加湿ガスを、別な系列で流される
乾燥ガスと混合して所定の露点の調湿ガス化しようとす
る際、調湿制御性（混合精度）に悪影響を与える。さら
に、この方法は、加湿ガスと乾燥ガスを混合して調湿す
る際に、加湿ガスの流量だけを調節するため混合精度が
低く、特に低露点域で乾燥ガスの流量変動を伴う場合に
は精密な露点制御が困難である。このように、これまで
の調湿方法は、いずれも焼鈍炉に要求される精密な調湿
に応えることができず、ましてや各炉ごとの調湿の要求
には応えることができていないのが実情である。By the way, in the conventional humidity control method for industrial gas, the steam generated by an electric boiler or the like is introduced into the gas mixer, and at the same time, the dry gas is also introduced, and the dry gas is mixed by mixing the both in the gas mixer. When controlling the humidity, a method of controlling the amount of steam to control the humidity control (Japanese Patent Laid-Open No. 50-75906), in which a dry gas is blown into a hot water tank and the blown gas bubbles form on the hot water surface. There is a method of humidifying while ascending and mixing the humidified gas with a dry gas that is flowed through a flow path of a different series to adjust the humidity. However,
With such a method, the precision required for the annealing furnace and the humidity control of each furnace cannot be sufficiently satisfied. That is, the method of, since high-pressure steam is blown directly into the dry gas, when trying to perform control on the low dew point side, the dew point will change significantly due to a slight change in the amount of injected steam, Precise control becomes difficult. In extreme cases,
It becomes uncontrollable with dew point hunting. In the method (1), it is difficult to adjust the dew point to a constant value because the state of gas bubbles blown into the hot water tank changes as the flow rate of the dry gas changes. Moreover, since this flow rate fluctuation fluctuates the pressure at the time of gas injection to change the pressure of the humidified gas, the humidified gas is then mixed with the dry gas that is flowed in another series, and the humidified gas having a predetermined dew point is mixed. When attempting to realize this, the humidity controllability (mixing accuracy) is adversely affected. Furthermore, this method has a low mixing accuracy because only the flow rate of the humidifying gas is adjusted when the humidifying gas and the dry gas are mixed to adjust the humidity, and especially when the flow rate of the dry gas varies in the low dew point range. Precise dew point control is difficult. As described above, none of the conventional humidity control methods can meet the precise humidity control required for the annealing furnace, let alone the humidity control request for each furnace. It's a reality.
この発明は、このような事情に鑑みなされたもので、焼
鈍炉に要求される精密な調湿に十分応えることができ、
しかも自由に露点の調整をすることができ、複数の焼鈍
炉の各別の調湿の要求に十分応えることができるガス調
湿法の提供をその目的とする。The present invention has been made in view of such circumstances, and can sufficiently meet the precise humidity control required for an annealing furnace,
Moreover, it is an object of the present invention to provide a gas humidity control method capable of freely adjusting the dew point and sufficiently satisfying the requirements of each humidity control of a plurality of annealing furnaces.
上記の目的を達成するため、この発明のガス調湿法は、
乾燥ガスの流路を端部から２系列に分岐させ、一方の系
列では乾燥ガスをそのまま流し、他方の系列では乾燥ガ
スを、温水を上部から散水する加湿塔の気相空間に導入
し、高露点加湿ガス化して流し、上記一方の系列の乾燥
ガスおよび他方の系列の高露点加湿ガスを、上記一方の
系列の乾燥ガスの流量と乾燥ガスの流量と他方の系列の
高露点加湿ガスの流量とを、一方の系列の流量が増加す
れば、その分だけ他方の系列の流量が減るように流量制
御する弁を通して合流混合することにより所定の調湿度
の調湿ガスにするという構成をとる。In order to achieve the above object, the gas humidity control method of the present invention comprises:
The flow path of the dry gas is branched into two series from the end, one series allows the dry gas to flow as it is, and the other series introduces the dry gas into the vapor phase space of the humidification tower where hot water is sprinkled from the upper part, Dew point humidified gas is made to flow, and the above-mentioned one series of dry gas and the other series of high dew point humidified gas are supplied to the above one series of dry gas flow rate and dry gas flow rate and the other series of high dew point humidified gas flow rate. When the flow rate of one series increases, and are combined and mixed through a valve for controlling the flow rate so that the flow rate of the other series decreases by that amount, thereby forming a humidity-controlled gas having a predetermined humidity control.
すなわち、この発明は、元となる乾燥ガス流路を、乾燥
ガスをそのまま流す系列とそれを加湿して流す系列に分
岐させるとともに、それらの系列の終端に、一方の系列
の流量が増加すればその分だけ他方の系列の流量が減る
ように流量制御する弁を配置して両系列のガスを合流混
合するため、元の乾燥ガス流路に供給される乾燥ガス
は、全て、上記弁の作動状態に応じた割合で一方の系列
と他方の系列に分かれて流れる。したがつて、元の乾燥
ガス流路の乾燥ガス流路が変化しても乾燥ガスはその変
化した分も含めて一方の系列と他方の系列に、弁の作動
状態に応じた割合で分かれて流れ、終端で合流されて調
湿される。そのため、常に設定したとおりの調湿度合の
調湿ガスが得られるようになる。すなわち、この発明の
方法によれば、乾燥ガスの流量変動が生じても精密な露
点制御をしうるようになる。特に、この発明では、乾燥
ガスを温水中に吹込んで加湿するのではなく、加湿塔の
気相空間に導入して加湿するため、乾燥ガスの大きな流
量変動時にも精密な露点制御ができるようになる。ま
た、この発明の方法は、加湿ガスだけでなく乾燥ガスの
流量も調節して調湿するため露点制御の精度が著しく向
上する。また、水蒸気を直接乾燥ガスに吹込んで調湿す
るのではなく、加湿ガスを用い、これを乾燥ガスと混合
して調湿するめ、低露点側でも精密な制御を行いうるよ
うになるという優れた効果が得られるようになる。さら
に、この発明の方法によれば、調湿ガス露点の調整は、
１系列の乾燥ガスと他の系列の加湿ガスの比率を変更す
るだけであり、両系列に流れるガス量の合計は元の乾燥
ガス流路の乾燥ガス流量と同じであつて乾燥ガス流量が
変動しない限り一定であるから、露点の調整で、得られ
る調湿ガスの流量に影響を生じることがない。したがつ
て、自由に露点の調整ができるようになる。That is, the present invention divides the original dry gas flow path into a series in which the dry gas is flowed as it is and a series in which the dry gas is humidified and flows, and if the flow rate of one series increases at the end of those series. A valve for controlling the flow rate is arranged so that the flow rate of the other series is reduced by that amount, and the gases of both series are merged and mixed, so that all of the dry gas supplied to the original dry gas flow path is operated by the valve. It flows into one stream and the other stream at a rate according to the state. Therefore, even if the dry gas flow path of the original dry gas flow path changes, the dry gas including the changed amount is divided into one series and the other series at a rate according to the operating state of the valve. At the end of the flow, the flow is joined and the humidity is adjusted. Therefore, it is possible to always obtain the humidity control gas having the humidity control value as set. That is, according to the method of the present invention, precise dew point control can be performed even if the flow rate of the dry gas fluctuates. In particular, in the present invention, since the dry gas is not blown into warm water for humidification but is introduced into the vapor phase space of the humidification tower for humidification, precise dew point control can be performed even when a large flow rate of the dry gas fluctuates. Become. Further, according to the method of the present invention, not only the humidified gas but also the flow rate of the dry gas is adjusted to adjust the humidity, so that the accuracy of the dew point control is significantly improved. In addition, rather than blowing steam directly into the dry gas to control the humidity, a humidified gas is used, and this is mixed with the dry gas to control the humidity, which makes it possible to perform precise control even at the low dew point side. The effect will be obtained. Further, according to the method of the present invention, the adjustment of the humidity control gas dew point is
Simply changing the ratio of the dry gas of one series to the humidified gas of the other series, the total amount of gas flowing in both series is the same as the dry gas flow rate of the original dry gas flow path, and the dry gas flow rate fluctuates. Unless the temperature is constant, the adjustment of the dew point does not affect the flow rate of the obtained humidity control gas. Therefore, the dew point can be adjusted freely.
つぎに、この発明を実施例にもとづいて詳しく説明す
る。Next, the present invention will be described in detail based on examples.
第１図はこの発明の一実施例の構成図である。図におい
て、１は元の乾燥ガス流路で、端部から、乾燥ガスをそ
のまま流す一方の系列２と、乾燥ガスを加湿して流す他
方の系列３に分岐している。上記一方の系列２には乾燥
ガスを加熱する加熱器４が設けられており、他方の系列
３には、乾燥ガスを加湿する加湿塔５が設けられてい
る。この加湿塔５は、圧力損失の少ない加湿装置であつ
て内部に気液接触をよくするための充填物６を備えてお
り、乾燥ガスを底部近傍から内部に導入しノズル７から
噴出させて塔５内を上昇させ、同時に底部に溜められた
温水８をポンプ９で塔５の上部に送つてスプレーノズル
10からスプレーし、このスプレーされた温水８と上記乾
燥ガスを向流接触させて乾燥ガスを加湿する。すなわ
ち、乾燥ガスは、充填物６の隙間を上昇してゆく間に、
スプレーノズル10からスプレーされた温水８と向流接触
して加温加湿され、温水温度とほぼ同程度の温度の高露
点加湿ガスとなり加湿塔５の塔頂から送出される。な
お、11は温水スプレー流路12に設けられた温水加熱器
で、乾燥ガスと向流接触して蒸発潜熱を奪われ温度が下
がつた状態で加湿塔５の底部に溜まつた温水８を加熱し
て所定の温度に高める作用をする。13は、流量制御弁
で、加湿塔５の塔頂から送出された高露点加湿ガスの露
点を測定する露点計14と連結されている露点調節計15に
よつて制御され、加湿塔５内のガス流量の変動にかかわ
らず常に塔頂から得られる高露点加湿ガスの露点を一定
に保つようにスプレーノズル10からスプレーする温水流
量を調節する。16は高露点加湿ガス中の水分の再凝縮を
防ぐための加熱器で、高露点加湿ガスを、露点を充分越
える温度に加熱する。17は加湿塔５の底部の温水量が低
減したときに給水する給水槽で、電磁弁18によつて自動
給水するようになつている。FIG. 1 is a block diagram of an embodiment of the present invention. In the figure, reference numeral 1 denotes an original dry gas flow path, which is branched from an end portion into one series 2 in which the dry gas is flowed as it is and another series 3 in which the dry gas is humidified and flows. The one series 2 is provided with a heater 4 for heating the dry gas, and the other series 3 is provided with a humidifying tower 5 for humidifying the dry gas. This humidifying tower 5 is a humidifying device with little pressure loss, and is equipped with a filling material 6 for improving gas-liquid contact inside, and a drying gas is introduced into the inside from the vicinity of the bottom and jetted from a nozzle 7 to make the tower dry. 5, the hot water 8 accumulated at the bottom is sent to the upper part of the tower 5 by the pump 9, and the spray nozzle
Spraying is performed from 10, and the sprayed warm water 8 is brought into countercurrent contact with the dry gas to humidify the dry gas. That is, the dry gas rises in the gap between the fillers 6,
The hot water 8 sprayed from the spray nozzle 10 is countercurrently contacted with it to be humidified by heating, and becomes a high dew point humidifying gas having a temperature almost the same as the temperature of the hot water and sent from the top of the humidifying tower 5. Reference numeral 11 is a hot water heater provided in the hot water spray flow passage 12, and the hot water 8 collected at the bottom of the humidification tower 5 in a state where the latent heat of vaporization is absorbed by the countercurrent contact with the dry gas to lower the temperature. It works by heating and raising it to a predetermined temperature. 13 is a flow control valve, which is controlled by a dew point controller 15 connected to a dew point meter 14 for measuring the dew point of the high dew point humidified gas sent from the top of the humidifying tower 5, The hot water flow rate sprayed from the spray nozzle 10 is adjusted so that the dew point of the high dew point humidified gas obtained from the top of the tower is always kept constant regardless of the fluctuation of the gas flow rate. Reference numeral 16 is a heater for preventing recondensation of water in the high dew point humidified gas, which heats the high dew point humidified gas to a temperature sufficiently exceeding the dew point. Reference numeral 17 is a water supply tank for supplying water when the amount of hot water at the bottom of the humidification tower 5 is reduced, and is automatically supplied by a solenoid valve 18.
一方の系列２および他方の系列３の終端近傍には、それ
ぞれ圧力調節弁19およびリニアポート弁20が設けられて
おり、一方の系列２の乾燥ガスおよび他方の系列３の高
露点加湿ガスがこれらの弁19,20を通つて合流路21で合
流し、混合して所定の露点の調湿ガスとなる。上記リニ
アポート弁20は、弁開度と通過流量の関係が直線（比
例）関係をもち、合流路21の露点計22と連絡されている
露点調節計23からの１つの信号で、２個の弁20,20が相
互に逆動作するようにクロス制御される。この結果、リ
ニアポート弁20は、上記一方の系列２の乾燥ガスおよび
他方の系列３の高露点加湿ガスを、一方の系列２の乾燥
ガス流量と他方の系列３の高露点加湿ガスの流量とが反
比例するように流量制御する。24は調湿ガス取出弁であ
る。A pressure control valve 19 and a linear port valve 20 are provided near the ends of one series 2 and the other series 3, respectively, and dry gas of one series 2 and high dew point humidifying gas of the other series 3 are provided. After passing through the valves 19 and 20 of the above, they join together in the joint flow passage 21 and are mixed to become a humidity control gas having a predetermined dew point. The linear port valve 20 has a linear (proportional) relationship between the valve opening and the passing flow rate, and one signal from the dew point controller 23 connected to the dew point meter 22 of the combined flow path 21 is used to generate two signals. The valves 20 and 20 are cross-controlled so that they operate in reverse. As a result, the linear port valve 20 sets the dry gas of one series 2 and the high dew point humidified gas of the other series 3 to the dry gas flow rate of one series 2 and the high dew point humidified gas of the other series 3. The flow rate is controlled so that is inversely proportional to. Reference numeral 24 is a humidity control gas extraction valve.
ガス供給源（図示せず）から乾燥ガス流路１に送入され
る乾燥ガス（例えば露点−40℃）は、一方の系列２と他
方の系列３に分かれて流れる。一方の系列２を流れる乾
燥ガスは、加熱器４で加熱されて終端に到達する。ま
た、他方の系列３を流れる乾燥ガスは、加湿器５で加湿
され、かつ露点計14,露点調節計15,流量制御弁13の作用
により一定露点に設定された高露点加湿ガスとなり終端
に到達する。そして、一方の系列２の乾燥ガスと合流さ
れ調湿ガス化される。この場合、上記一方の系列２およ
び他方の系列３の終点近傍には、リニアポート弁20が設
けられていて、露点調節計23の出力信号により、一方の
系列２の流量が増加すれば他方の系列３の流量がその分
だけ減るように両系列2,3の流量制御を行うため、乾燥
ガス流路１に送入される乾燥ガスは、全てリニアポート
弁20の作動状態に応じた割合で一方の系列２および他方
の系列３に流れる。したがつて、ガス供給源から乾燥ガ
ス流路１に送入される乾燥ガスに流量の変動があつて
も、その変動分もリニアポート弁20の作動状態に応じて
一方の系列２と他方の系列３に分かれて流れるため、設
定どおりの調湿度合の調湿ガスが得られるのである。ま
た、この実施例は、湿度100％の水蒸気ではなく、高露
点の加湿ガスを用い、これと乾燥ガスとを、相互の流量
が反比例するように流量制御して調湿ガスを得るため、
精密な露点制御を全範囲にわたつて実現しうるようにな
る。そのうえ、調湿ガス露点の調整は、一方の系列２の
乾燥ガスと他の系列３の加湿ガスの比率を変更するだけ
であり、両系列2,3に流れるガス量の合計は元の乾燥ガ
ス流路１に供給される乾燥ガス流量と同じであつて乾燥
ガス流量が変動しない限り一定であるから、露点の調整
で、得られる調湿ガスの流量に影響を生じることがな
い。したがつて、自由に露点の調整ができるようになる
ため、複数の焼鈍炉の各別の調湿の要求に充分応えるよ
うになる。The dry gas (for example, dew point −40 ° C.) sent from the gas supply source (not shown) to the dry gas flow path 1 separately flows into one series 2 and the other series 3. The dry gas flowing in one of the series 2 is heated by the heater 4 and reaches the end. The dry gas flowing through the other series 3 is humidified by the humidifier 5 and becomes a high dew point humidified gas set to a constant dew point by the action of the dew point meter 14, the dew point controller 15, and the flow rate control valve 13, and reaches the end. To do. Then, it is combined with one of the series 2 dry gases to be a humidity-controlled gas. In this case, a linear port valve 20 is provided near the end points of the one series 2 and the other series 3, and if the output signal of the dew point controller 23 increases the flow rate of the one series 2, the other Since the flow rate of both series 2 and 3 is controlled so that the flow rate of series 3 is reduced by that amount, the dry gas fed into the dry gas flow path 1 is at a ratio according to the operating state of the linear port valve 20. Flow to one series 2 and the other series 3. Therefore, even if the flow rate of the dry gas fed from the gas supply source to the dry gas flow path 1 varies, the variation amount of the one series 2 and the other series 2 is also changed according to the operating state of the linear port valve 20. Since the flow is divided into the series 3, the humidity control gas having the humidity control value as set can be obtained. In addition, this embodiment uses a humidifying gas having a high dew point, rather than steam having a humidity of 100%, to obtain a humidity control gas by controlling the flow rates of the humidifying gas and the dry gas so that the mutual flow rates are inversely proportional to each other.
Precise dew point control can be realized over the entire range. Moreover, the adjustment of the humidity control gas dew point only changes the ratio of the dry gas of one series 2 to the humid gas of the other series 3, and the total amount of gas flowing in both series 2 and 3 is the original dry gas. Since it is the same as the flow rate of the dry gas supplied to the flow path 1 and is constant as long as the flow rate of the dry gas does not fluctuate, the adjustment of the dew point does not affect the flow rate of the obtained humidity control gas. Therefore, since the dew point can be freely adjusted, it is possible to sufficiently meet the requirements for humidity control for each of the plurality of annealing furnaces.
第２図はこの発明の他の実施例の構成図である。この実
施例は、第１図の実施例のリニアポート弁20,露点調節
計23および露点計22に代えて、リニア特性をもつた三方
混合弁30を使用している。それ以外の部分は第１図の実
施例と同一であるから同一部分に同一符号を付してい
る。FIG. 2 is a block diagram of another embodiment of the present invention. This embodiment uses a three-way mixing valve 30 having a linear characteristic in place of the linear port valve 20, dew point controller 23 and dew point meter 22 of the embodiment shown in FIG. Since the other parts are the same as those in the embodiment of FIG. 1, the same parts are designated by the same reference numerals.
この実施例も第１図の実施例と同一の作用効果を奏する
ほか、さらに三方混合弁30が安価であるため、全体のコ
ストが安価になるという効果が得られる。This embodiment has the same effects as the embodiment shown in FIG. 1, and further, since the three-way mixing valve 30 is inexpensive, the overall cost can be reduced.
なお、第２図の実施例でも露点計および露点制御計を設
けて三方混合弁30を制御し調湿ガスの露点を自動調節す
るようにしてもよい。また、弁開度と調湿ガスの露点の
関係同志を予め調査しておけば、任意の露点が弁開度を
変えるだけで得られるようになる。また、上記の実施例
は、いずれも加湿塔５で乾燥ガスを加湿するようにして
いるが、設定どおりの高露点加湿ガスを調整できればこ
れに限らずどのような装置を用いてもよい。In the embodiment shown in FIG. 2 also, a dew point meter and a dew point controller may be provided to control the three-way mixing valve 30 to automatically adjust the dew point of the humidity control gas. Further, if the relationship between the valve opening degree and the dew point of the humidity control gas is investigated in advance, an arbitrary dew point can be obtained only by changing the valve opening degree. Further, in the above-mentioned embodiments, the humidification tower 5 humidifies the dry gas, but any device may be used as long as it can adjust the high dew point humidified gas as set.
この発明は、以上のようにして乾燥ガスの調湿を行うた
め、全露点域において精密な露点制御をなしうるように
なる。そのうえ、この発明の方法は流量を変えることな
く自由に露点の調節が行えるため、例えば複数の焼鈍炉
のそれぞれについて焼鈍の程度に合わせて雰囲気ガスの
露点を精密に制御しうるようになる。したがつて、この
発明の方法は、特に焼鈍炉の雰囲気ガスの調湿に最適で
ある。According to the present invention, since the humidity of the dry gas is adjusted as described above, precise dew point control can be performed in the entire dew point range. In addition, since the method of the present invention can freely adjust the dew point without changing the flow rate, for example, the dew point of the atmospheric gas can be precisely controlled according to the degree of annealing in each of the plurality of annealing furnaces. Therefore, the method of the present invention is particularly suitable for controlling the humidity of the atmosphere gas in the annealing furnace.
第１図はこの発明の一実施例の構成図、第２図は他の実
施例の構成図である。 １……乾燥ガス流路、２……一方の系列、３……他方の
系列、４……加熱器、５……加湿塔、６……充填物、7,
10……ノズル、８……温水、９……ポンプ、11……温水
加熱器、12……温水スプレー流路、13……流量制御弁、
14,22……露点計、15,23……露点制御計、19……圧力調
節弁、20……リニアポート弁、21……合流路FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a block diagram of another embodiment. 1 ... Dry gas flow path, 2 ... One series, 3 ... Other series, 4 ... Heater, 5 ... Humidifying tower, 6 ... Packing material, 7,
10 …… Nozzle, 8 …… Hot water, 9 …… Pump, 11 …… Hot water heater, 12 …… Hot water spray passage, 13 …… Flow control valve,
14,22 …… Dew point meter, 15,23 …… Dew point controller, 19 …… Pressure control valve, 20 …… Linear port valve, 21 …… Combined flow path
フロントページの続き (72)発明者 吉野 明 大阪府南河内郡狭山町西山台２丁目30番13 号 (72)発明者 木山 洋実 大阪府高石市羽衣２−１ 羽衣団地Ｃ− 404 (56)参考文献 特開 昭54−45605（ＪＰ，Ａ) 特開 昭50−75906（ＪＰ，Ａ) 特開 昭59−1626（ＪＰ，Ａ) 実公 昭56−32509（ＪＰ，Ｙ２)Front page continuation (72) Inventor Akira Yoshino 2-30-13 Nishiyamadai, Sayama-cho, Minamikawachi-gun, Osaka (72) Inventor Hiromi Kiyama 2-1, Hagoromo, Takaishi-shi, Osaka C-404 (56) References Special Kai 54-45605 (JP, A) JP 50-75906 (JP, A) JP 59-1626 (JP, A) JP 56-32509 (JP, Y2)
Claims (4)
せ、一方の系列では乾燥ガスをそのまま流し、他方の系
列では乾燥ガスを、温水を上部から散水する加湿塔の気
相空間に導入し、高露点加湿ガス化して流し、上記一方
の系列の乾燥ガスおよび他方の系列の高露点加湿ガス
を、上記一方の系列の乾燥ガスの流量と他方の系列の高
露点加湿ガスの流量とを、一方の系列の流量が増加すれ
ば、その分だけ他方の系列の流量が減るように流量制御
する弁を通して合流混合することにより所定の調湿度の
調湿ガスにすることを特徴とするガス調湿法。1. A vapor phase space of a humidification tower in which a flow path of a dry gas is branched into two series from an end, one series allows the dry gas to flow as it is, and the other series sprinkles the dry gas with hot water from above. Introduced into a high dew point humidified gas to flow, the one series of dry gas and the other series of high dew point humidified gas, the above one series of dry gas flow rate and the other series of high dew point humidified gas flow rate. Is characterized in that when the flow rate of one series increases, the mixed flow is mixed and mixed through a valve for controlling the flow rate so that the flow rate of the other series decreases by that amount, thereby producing a humidity control gas having a predetermined humidity control. Gas humidity control method.
内部に導入し、これを、内部の上部から散水される温水
と向流接触させて加湿する加湿塔である特許請求の範囲
第１項記載のガス調湿法。2. A humidification tower in which the humidity control apparatus introduces a dry gas into the interior from the vicinity of the bottom, and countercurrently contacts the dry gas with hot water sprinkled from the upper part of the interior to humidify the humidification tower. The gas humidity control method according to item 1.
分だけ他方の系列の流量が減るように流量制御する弁
が、露点調節計からの１つの信号で相互に逆動作する一
対のリニアポート弁であって、それぞれ一方の系列およ
び他方の系列の終端近傍に配設されているものである特
許請求の範囲第１項または第２項記載のガス調湿法。3. A pair of valves for controlling the flow rate such that if the flow rate of one of the series is increased, the flow rate of the other series is decreased correspondingly by one signal from the dew point controller. The gas humidity control method according to claim 1 or 2, wherein the linear port valves are arranged near the ends of one series and the other series, respectively.
系列の乾燥ガスの流量とが反比例するように流量制御す
る弁が三方混合弁である特許請求の範囲第１項ないし第
３項のいずれかに記載のガス調湿法。4. A three-way mixing valve as the valve for controlling the flow rate so that the flow rate of the dry gas in one of the series and the flow rate of the dry gas in the other series are inversely proportional to each other. The gas humidity control method according to any one of 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58075618A JPH0674451B2 (en) | 1983-04-27 | 1983-04-27 | Gas humidity control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58075618A JPH0674451B2 (en) | 1983-04-27 | 1983-04-27 | Gas humidity control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59200719A JPS59200719A (en) | 1984-11-14 |
| JPH0674451B2 true JPH0674451B2 (en) | 1994-09-21 |
Family
ID=13581372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58075618A Expired - Lifetime JPH0674451B2 (en) | 1983-04-27 | 1983-04-27 | Gas humidity control method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0674451B2 (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01316417A (en) * | 1988-06-16 | 1989-12-21 | Ngk Spark Plug Co Ltd | Device for controlling dew point in atmospheric furnace |
| JP2612604B2 (en) * | 1988-09-16 | 1997-05-21 | 川崎製鉄株式会社 | Dew point control method of furnace atmosphere gas |
| JP2002349901A (en) * | 2001-05-23 | 2002-12-04 | Tadahiko Ibamoto | Dew point temperature control method and external conditioner using the same |
| JP4618936B2 (en) * | 2001-06-15 | 2011-01-26 | 三機工業株式会社 | Gas supply device and inspection system |
| JP4734904B2 (en) * | 2004-12-02 | 2011-07-27 | 株式会社豊田中央研究所 | Humidifier |
| JP4541903B2 (en) * | 2005-01-07 | 2010-09-08 | 株式会社日鉄エレックス | High-speed response type humidified gas supply system and humidified gas supply method |
| JP5376821B2 (en) * | 2008-03-26 | 2013-12-25 | 光洋サーモシステム株式会社 | Gas generator and method for generating dilution gas |
| DE102010032919B4 (en) * | 2010-07-30 | 2023-10-05 | Air Liquide Deutschland Gmbh | Method and device for humidifying a combustible gas |
| MX393846B (en) * | 2014-02-25 | 2025-03-24 | Jfe Steel Corp | METHOD FOR CONTROLLING DEW POINT IN REDUCTION FURNACE, AND REDUCTION FURNACE. |
| JP6131919B2 (en) | 2014-07-07 | 2017-05-24 | Ｊｆｅスチール株式会社 | Method for producing galvannealed steel sheet |
| JP6128068B2 (en) * | 2014-07-07 | 2017-05-17 | Ｊｆｅスチール株式会社 | Method for producing galvannealed steel sheet |
| JP6020605B2 (en) * | 2015-01-08 | 2016-11-02 | Ｊｆｅスチール株式会社 | Method for producing galvannealed steel sheet |
| JP6671118B2 (en) * | 2015-07-27 | 2020-03-25 | アズビル株式会社 | Gas treatment equipment |
| JP6774345B2 (en) * | 2017-01-26 | 2020-10-21 | アズビル株式会社 | Gas processing equipment |
| JP6774346B2 (en) * | 2017-01-26 | 2020-10-21 | アズビル株式会社 | Gas processing equipment |
| CN106995876B (en) * | 2017-05-26 | 2018-05-15 | 鞍钢蒂森克虏伯（重庆）汽车钢有限公司 | A kind of annealing furnace humidifier pipe-line system and its operating method |
| RU189336U1 (en) * | 2018-12-27 | 2019-05-21 | Федеральное Государственное Унитарное Предприятие "Всероссийский Научно-Исследовательский Институт Физико-Технических И Радиотехнических Измерений" (Фгуп "Вниифтри") | WET GAS GENERATOR |
| CN111690805A (en) * | 2019-03-14 | 2020-09-22 | 上海东新冶金技术工程有限公司 | Dry and wet nitrogen mixing and humidifying device in cold-rolled strip steel annealing furnace and using method thereof |
| JP2023147925A (en) * | 2022-03-30 | 2023-10-13 | 住友化学株式会社 | Apparatus for producing a catalyst for producing methacrylic acid and method for producing a catalyst for producing methacrylic acid |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5075906A (en) * | 1973-11-12 | 1975-06-21 | ||
| JPS5445605A (en) * | 1977-09-19 | 1979-04-11 | Nippon Steel Corp | Humidifying atmospheric gas for tempering furnace |
| JPS5632509U (en) * | 1979-08-20 | 1981-03-30 | ||
| JPS6058286B2 (en) * | 1982-06-28 | 1985-12-19 | 中外炉工業株式会社 | Atmosphere gas humidifier |
-
1983
- 1983-04-27 JP JP58075618A patent/JPH0674451B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59200719A (en) | 1984-11-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0674451B2 (en) | Gas humidity control method | |
| CN101200000B (en) | Method for reducing molybdenum oxide by adjusting dew point of hydrogen | |
| JP4913714B2 (en) | System and method for generating a gas sample of known and adjustable relative humidity | |
| JPH04288418A (en) | Method and device for air conditioning | |
| WO2003043115A3 (en) | A gas humidification device for operation, testing, and evaluation of fuel cells | |
| JP2011080718A (en) | Method and device for drying coating film | |
| JP3081866B1 (en) | Humidifier | |
| CN201605295U (en) | High-precision humidifying device for continuous annealing furnace | |
| CN104152648A (en) | Gas distributing method in low-dew point atmosphere in continuous annealing furnace | |
| JPS57120042A (en) | Method of controlling air conditioner | |
| JP3465983B2 (en) | Solid polymer electrolyte fuel cell and fuel gas or oxidizing gas supply method for solid polymer electrolyte fuel cell | |
| JP2612604B2 (en) | Dew point control method of furnace atmosphere gas | |
| JP2000019056A (en) | Wind tunnel testing device | |
| JP2842652B2 (en) | Air conditioner | |
| JP2712828B2 (en) | Environmental test equipment | |
| JPS6058286B2 (en) | Atmosphere gas humidifier | |
| JP2005264305A (en) | Method and apparatus for humidifying atmospheric gas | |
| CN218783063U (en) | Air supply humidifying device of fuel cell testing platform | |
| JP3892533B2 (en) | Atmospheric gas humidifier | |
| JPS5995324A (en) | Air conditioner | |
| JP2927633B2 (en) | Blast furnace blast moisture control method and apparatus | |
| JPH06108146A (en) | Low dew point humidification method for atmospheric gas | |
| JPH0643173Y2 (en) | Atmosphere gas humidifier for heat treatment furnace | |
| JPS6018075Y2 (en) | Koji making equipment | |
| CA2081176C (en) | Vapor pressure device |