DE1758976A1 - Process and device for extracting the gases produced during the continuous wind-freshening process - Google Patents

Description

P A T E hf T A N W A L T STUTTGART

A 10740

September 8, 1968

INSTITUT DB RECHERCHBS DB LA SIDERÜRGIE PRANCAISE Saint Germain-en ~ laye (Υτ 11ηβ), France

Process and device for the extraction of the gases resulting from the continuous wind-free process,

The invention relates to a method of suction of the Gases generated by continuous wind conditions and a device for carrying out the method. at the evacuation of the gases generated during wind-freshening Problems which the conventional methods and devices have difficulty solving. at The gases escaping from the Priaoh container must be used in this process at the same time. continuously sucked off and also

109887/0522 -2-

A 10 740
8.8ept. 196Θ
i ~ ha

daa refurbished metal and dia 8ohlaoke continulerlloh be withdrawn. Dia hlersu serving devices have In addition to the suction opening for the gases, open further openings, of which in particular the amount of money for the soil drainage Constantly standing in the air of the outside air Difficulties arise when "we want to prevent" that the 8ohlaokenabfluaaea gases escape at this point known »that sur control daa windfriscbproseeees one Masenahae consists in reducing the quantity of the escaping gases and adding them to the anal Spielsweiee their obsession with carbon dioxide and carbonic acid, see below These catfish determine the progressive decarburization follow the metal hall. It follows from this that it is absolutely necessary to remove all of the table-top containers Recover escaping gases and any loss of gas and thus in particular the loss of essential items for the analysis " Avoid carbon monoxide and carbon dioxide. A further difficulty consists in the fact that devices for carrying out the hairdressing process generally have several containers connected to one another, ao that considerations be employed where the most favorable point for the connection of the gas suction line is. let only a single one Suction line provided, it causes difficulties

109887/0522

, BADORlGtNAL

A 10 740

Sep 8, 1968

Rearrange them so that any escape is safe of fresh gases into the atmosphere, but also everything Sucking in exhaust air into the suction line is avoided will. The last would have been no detrimental Influence on the determination of the carbon content in the Smoke gases and consequently on the control of the Prischproeesees; However, the suction of outside air increases large values, so is the serious part a significant change in the temperature of the flue gases with the susätsllohen risk of a considerable solution bound by nitrogen in metal. For these reasons, efforts are made to not only take in outside air Get control of it, but rather it completely if possible To announce. The invention is therefore the object based on avoiding these powers and in particular report the escape or the ringing of oases at the point of the slag drainage.

The invention is based on a method for suction of the oasis that occurs when a metal melt is continuously seen by means of two gas discharge lines, whose one to the reaction container and the other to the container having a hose to drain the atmosphere connected 1st, and sees only avoidance of the oasis

109887/0522 ■ · ♦ -

A 10 740
8.8ept. 1968
1-ha

or the Oeaeintritte en the point of the Sohlackenabflueeee, the Nn <e of the gas sucked out of the reaction vessel to a value which is below the Loreal value Q of the relevant arrangement, and the amount of the gas sucked out of the vessel having the slag outflow to a value q * to be regulated, dexfLm substantially corresponds to the difference Q - q * For this purpose, the difference between the pressure p _{a of} the outside air and the pressure P ₁ inside the container is advantageously measured continuously at the point of the slag discharge and the gas discharge in both of them is common Lines leading to the gas exhaust duct are regulated so that this difference ^ ρ * P ₁ - p _{a is} practically 0 1st. Advantageously, a regulator is used to control the fume cupboard, which is controlled by means of the gross ρ. A device with two containers of the aforementioned type is used to carry out this process, in which the two Oasabaugsleltungen are connected to a common gas outlet duct, which, like at least one of the two gas outlet lines, has a control system for the gas outlet, which is supplied by a device according to the pressure difference ^ Δρ is controlled, which is determined by means of two pressure gauges, which in the vicinity of the 8chlaokenabflu88ßß the pressure pj inside the last container and

109887/0522

. c. BATH ORIGINAL

A 10 740

September 8, 1968

Measure the pressure p _{fi of} the outside air. The gas exhaust duct can either open freely into the space delimited by a gas collecting tube or it can also be connected directly to the intake port of a fan. The gas exhaust duct can also be arranged vertically and connected to a chimney be educated. If in this way an equilibrium between the external and internal pressure is achieved at the point where the slag is drained, it is ensured that the total amount Q of the gases escaping from the containers get into the gas discharge duct and that no outside air penetrates into it. In addition, a combustion of the flue gases is avoided, so that a perfect gas analysis and thus also a flawless control of the hairdressing process can be carried out «

With this arrangement it is also possible to act on the gas vent in such a way that only the partial amount q of the total amount Q of the reaction gases is sucked out of ^{the reaction container and only the remaining amount q 1 is sucked out of the last container} Reactfcionu container to the last, the hose to drain up, send Bf * hai tor according to the unrelated procedure onabo-J! Ugur ■ · «··; ■> u are effected

A 10 740

8, Sept. 1968 /

i ~ ha Ψ

This oaaslrkulatlon brings the w «lter« η advantage old β loh, that the single containers and their contents at the favorable Ige ten Teeperm door held «can earth and bo the ge · oejite W & raebilans the plant can be improved. Ina special on this level, the slag can be kept at a temperature that promotes its flow and drainage will.

The system can be controlled automatically in a simple manner take place »in the two at the point of the echlackenabfluseee Pressure sensors are arranged »aittele their display via a Ironing device the suction eo is controlled that at the point of Sole drains twiaehen the inside and the outside Pressure equilibrium prevails »

The erfindungsgeafia9e (toeabsugssyet ^ ea can refer to different Catfish are realized. 8o can for example point to it ▼ can be seen »in the old connected reaction tank Provide a tent 11 for suction line. Knows them Sesaataenge Q of the operation of the plant in question.

so that the length q of the gases flowing through them can be determined

on line etröaenden ββββ from the start / an aerklieh set a lower value, for example 5/4 Q. With a a i » essential constant, la Toraus hestiaaten Aneaug-Ünterdruok

109887 / 0S22 BAD ORIfflNAL

A 1β 740

September 8, 1968

i-ha h

gives the cross-section of this line such a size, that the amount of gas sucked duroh this line as a result of the Pressure drop assumes the value q. In this case, the control device acts on the control organs learning the train in the other line and possibly in the common line Suction channel only act eo that the total amount of suctioned Gases Q amounts to corresponds to a value representing the minor fluctuations around this mean value are taken into account.

The common gas suction channel can be designed and arranged in various ways. Sr can, for example, ver should never be short and in that of a normal Gas ™ Catching hood bounded tree open, this catching hood is connected to a fan. But he can can also be connected directly to the fan via a connecting line. If you use a long enough vertically arranged Abeugkanal, so serves as a Chimney, so that no fan is required to extract the entire amount of gas «

In the drawing are some embodiments of the he

In

inventive device ^ chematisoher Weioe shown.

109887/0522

A 10 740

β. Bept '1968

Be selgen

Ed. 1 the frlson plant alt Abeaugsyet ^ ea ta Aufriss;

fig. 2 and; FIg,>

swel further AuefUhmmgebeleplele de · OesabBug-Sjretheas.

01 · Plant neon Mg «1 uafeset a« la · * sideways finleeetuteen 9 «afeeeeiiden eeaktionebebfilter ■ ittele iiBirliBN 11 frlvohg «· ala ^ blaMn ¥ lrd, · ον1 · an old the ··· BeIHlUr d «raw a» about friends «Wide BebÄlter 12 old an upper floor formed by a rare wall 19 ·

Bb · OaMbsugeyeVMi divides into an old de «container 10 Terbvodenea line 14 and an old dea Beb & lter 12-connected line 15, which ends the urn of this BebUter · shrouding fur of the» upper Abeonlueeplette _t -et «· overflow dee Soteeeolteneba angeeohloeeen 1st · The two lines lead su elnea gelneen> «eoht an ordered Abeugkanal 16, in which a Breb * ehleber 17 arranged let · This Eanai ends vaalttelbar under elnerAaffengiMttbe 18» which over a time 19 old ananggebllM 20 Terbvnden let · this arrangement did Glelehaeltlg the door part, like an overpressure valve eu act »obee that they at the inventing · *

109887 / 0S22 ^ ⁹ - bad

A 10 740

8th Sept. 1968

If a device is required, care must be taken with this arrangement that, as a result of internal and external pressure under the hood 18, the gas duct 16 and the line 19 remain constant, eo this arrangement corresponds to the arrangement according to PIg. 2, in which the channel 16 is directly connected to a line 21 leading to the south of the blower. In the case of a predetermined rental of the suction fan, the extracted gas volume is regulated by means of the rotary valve to the value Q corresponding to local operation. The cross section s of the line 14 is so possessed * that it is a “cross section corresponds” to that it is smaller than the cross section that would be required for the suction of the entire escaping oasis. This line is designed in such a way that the amount of gas q sucked off through it is smaller than the mixture Q that arises when the plant is operated locally abetroat. This outflowing partial length q ^f is ■ Q - q.

109887/0522

-10-

A 10 740

9 Sept. 1968

i-ha / 0

The line 1 $ Dung eia valve 22 and a connection S on »da weeentlloh grfteaer tat ale Aar Quoraoanltt a Aar line 14- Maaar Quereonalt iat ao baaaaaea, AaB at completely ottmmm lentil alma eterke im- fngyng rcm outside air. Hleraua Iat ereiohtlioh, AaS ββ aiaa 8talliuie Alaaas ¥ «atUaa there, at Aar Ala Aero * Al · lei do« ab0eaa «£ te Qmmm0ngß Qq iat. SIa la Αββ OarAt 29 Vorgenoaeene Qaeanalyaa represents aoajlt a for the Friechprosaa characterakferiatieohen Wart, ao AaB Aar friaohpromeee to Huiaeaaa Αββ Srgebnleaae Aar Geaaaalyee came to be gaateuert.

At Aer 8t "lle Aaa Sehleokenabfluaeee and" Wei BruokfUhler 24a and 24b rerisiert "aaa Aeraa information the DtruekAlf fereut A P ^β P ₁ - p _m is received. The Binatellune Aaa valves 22 therefore follows as a function of Aaa Vertee ^ p. The word of Δ, as In voratahanAea aoagefiaurt became, should be · 0; He * can, however, have anoh small nagatlTe values / waa a slight Anaaugong of Aaeaealuft ^ Bw can then be a part of the gate when the system is subjected to unusual operating conditions. The regulation of the valves 22 and you that Aaa Ventilee 17 takes place more advantageously welae autoaatlech. Bin Stevergerltt 25, in Aaa Aar value ρ inputVlrdt controls aittele aotoriaoher drives 26 and 27, the two valves 22 and 17

109887/0522

-11- BAD ORIQiNAL

A 10 740

9 Sept. 1968

These two Tantila also determine the proportion of the Oeae who have escaped from the inspection container and who have read the dakantier container. Ea iet ao aöglicb that the ratio q ¹ / q, alao the amount of the regenerating oasis BU rergreasern, in dea aan the opening of the valve la ratio to that of the valve 17 increases. This can be done as an alternative to a control variable entered in the control unit 25.

Compared to the one shown in Fig. 1, the executionafora as shown in Fig. 2 can offer certain tortelles. Will aan catch and sang the oeee without burning, much like when operating the aeate converter but since then there is no longer any kind of standard equipment, old which a pressure washer used to be Is recovered inside the collecting hood.
In dea Ansfunrungsbelspiel according to Fig. 3, the height of the

vertical suction ducts 16 ao selected so that the rising hot gases create a sufficiently large is called. This Syet ^^^ ea will then be beneficial applied when on a dust collector or an etickgewinmmgsani age can be rertiohtet.

The effectiveness of the exhaust system remains

same if on the arrangement of a valve 22 in the * for

109887 / 0S22 -12-

1788976

1 Io 74 _{/ t}

9. S ^ tttftav 196β β

JL ** st

dltem Hall tngtr tattftt Xtltng 15 venOtlrttt «ad d *» lttr tim TenUl la «· * teitoag 14« ^ ttKdatt wild · A & etell · olil «bex» TMitll «n ijBuyf —lbftdl« ttoh

b «U« bi «t« ader · Tttttllt »WitpttXtntltt SJtkttetB Ttnr ·» -

• 13 · ■ 109887/0522 BAD original

Claims (8)

-ι niVhi jc.!, -., _; - ;. ft v, 'e September 9, 1968 ' - μ - 9 $ - · Procedure evr suction "the oasis created in" continuous for one ketallschjelse enter Terwendang a lordnanst at an erate container (reaction container) a last "one old of the free atmosphere in Terbindang arranged sehlaekenahlaBlaBeende container" the two each a OeeabKngsleittaag "ngeechloasin are" gekennseiohnet characterized ₉ that "or Teraeidong dee Oaaaustritts b« w · dea Oaeeintritte at the point (13) of Sohlaokenahflneeee q the amount of aas dea reaction vessel (1o) abgeeattgten oasis "to a value" the enter semi dea loxaalirertes Q of the arrangement in question lies and the amount of gas extracted from the last container to a value g. ¹ is regulated, which essentially corresponds to the diffarena Q - q. is equivalent to" 2. Terfahren according to claim 1 _V characterized marked, dej at the point (13) of the Sohlaokenabflasses the difference between the pressure p _{a of} the AueenluXt and the pressure P ₁ within the container kontlnalarlioh 109887/0522 ^{1 j} BATH ▲ 1o 74ο 9. Scptesber 1968 _iU - «e / T Eat nod der Qasabsug In the two lines (14 · 15) going south to the gssjalnsa ■ en Qaeabsugakanal (16) it is regulated in such a way that this difference ^ P ■ P _A - P _a practically XiBOh m o is . 3 · method according to claims 1 and 2 »thereby marked that «or control of the gas suction a Qerfit (25) is used »the old tale of OröseZip is controlled 4 · Device for surrouding the experienced person according to claim 1 by means of an arrangement in which a first container (reaction container) is arranged in a last container which has an old of the free at- osphlre connected sole outflow, both of which are connected to an oas suction line , gekennselohnet by Dafi the two Oasabsugsleltungen (14 _f 15) are angesohlossen to a genoineaaen Qasabsugskanal (16) "of as well nlndestens one of the two Qasabsugsleltnngen (U ₉ 15) a control member (17, 22) FTIR the Gasabsug having" the of Elnesj device (25) is controlled according to the Sruokdlfferens ^ ρ »which aittels sweier pressure sensor (24a» 24b) is determined, which in the height of the SohlaokenabOLueeee the pressure P ₁ la inside 109887/0522 - 15 - ORIGIMAL BATHROOM A 1o 74o 9 September 1968
i dee letsten container "did deft pressure p _a outside air Aessen * 5 «. Device according to claim 4 «characterized in that that the Oasabsugskanal (16) freely in the of an Oagaoffanghaobe (18) green building. 6 "Device according to claim 4, characterized in that that the gas suction channel (16) immediately attached to the aneaugstutsen (21) of a suction fan (2o) is· 7 · Device according to claim 4 »characterized in that that the suction channel (16) is arranged vertically and is designed as a laain or connected to a rabbit. 8. Device naoh the claims 4 to 7, characterized in that the regulating members (17, 22) fttr the gas suction valves are 9 · device NaOH to claims 4 to 7, characterized _f in that the control organs are formed (17 '22) for the Gaeabeog by Sjektoren. 109887/0522