DE1592281A1 - Process for the economical conversion of carbon monoxide by means of water vapor - Google Patents

Description

VEB Leuna-Werk · "Walter Ulbricht" Leuna, din _ne Patent department S / DG, Hi / 5y ²⁶

L.P. 664

Process for the economic conversion of coal " monoxide by means of Waeserdampfe

The invention relates to a method for the economic utilization of the waste heat that occurs during the conversion of carbon monoxide into carbon dioxide and hydrogen by means of Waaaerdampfe.

The conversion of carbon monoxide by means of water vapor takes place, depending on the properties of the catalysts used, at temperatures between 170 and 550 ⁰ O. To be able to carry out the conversion as completely as possible, a large excess of water vapor in the fresh gas is necessary, which is a multiple of the water vapor converted during the reaction amounts to. A part of this amount of water vapor is added to the fresh gas in a saturator by direct sprinkling with hot water. The remaining steam must be added as external steam.

Is known a process for the recovery of the waste heat that leaves the converter Contact gas gives off part of its heat to the fresh gas preheated in a saturator and this up to the door Reaction temperature preheated. To a significant proportion to save on additional steam, this will add to the saturator leading · hot water brightened as high as possible beforehand. ”At this 2“ corner, the indirect heat exchange is used Waste heat of the Xontaktgasea sur lightening of the water. The further cooling of the set gas takes place in an int he moist. Here, the direct heat exchange is returned to the water leaving the saturator in part of the heat given there. Om becomes water frozen in Ireisltuf over saturators and humidifiers. the 008849/1497 'bathroom. original. - / -

159228-T 664 - a -. ■

reatliehe Aufwärmimg this Kreislaufwaaaare geeehieht Xm mentioned indirect heat exchange with da * Kontaktgaβ enters $ n dtn Bntfeucht49 · 01 · SchluäkUhlung 441 u »- Qaaaa done by cold frieefc · PDAR & UckkUh4-ιβ, β, ββ"

In the known procedure, the gaaamte Warms excess, 4th h. dia «it dam Zuaatadampf listed · Heat aovila dia reaction heat, given to the KUhXwaaaer Jj * Sohluöklinler and thus goes for an economic Use lost "

A method is also known in which excess heat is partially recovered in that at τοη the rom saturator to the dehumidifier draws off a portion, passes it through a heat exchanger and then passes it to the dehumidifier at a closer point, ie above the Feeding of the uncooled circulation water, supplied again. In the heat exchanger, the heat that is not used in the process is used for other technical purposes, e.g. B. for warming up τοη feed water or warming up the circulating water of a second graining system, the contact gas of which has a lower dew point than the contact gas of the first system. Downstream of the heat exchanger, a further T _G ll flow of the water can be cooled to the lowest possible temperature in a surface cooler and used for the final cooling of the gas.

This process for heat recovery in conversion systems is all the more economical, the higher the dew point of the Qaaea, ie. yes higher the operating pressure of the plant is · Dennooh is dieae water waste heat as sensible heat contained only in a relatively low temperature range up to about 160 ⁰ C aar available in dam circuit. The use of the waste heat to generate steam is therefore uneconomical from the outset, otherwise the proposed recycling in a second conversion plant operated at lower pressure daa Torhandenaeia

009849/1497 _BAD original

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a solo plant ahead uad let autodta ittetk lloh eingMOhrttnkt, dal the slide offered · perceptible · Wtfn »Ü · Krsialeufwaaaere bai the low Teaperat «IA dia« · * Order of magnitude on dl · ·· whale · · nor ία a gulag «* Τ · 11 recycled «erdan can ·

The finer, well-known, heat recovery process consists in the fact that a teletom gas is passed in parallel to the heat exchanger via an evaporator and the heat exchanger diffraction nuts ₍ the contact gas is noble except for a few Qrad Celdua above a dew point "Bine economical · waste heat maintenance on the gate floor layers fei ·· iat only given if the dew point is as low as possible." This process is therefore limited to pressureless and pressure conversion systems.

The purpose of the invention is ea, the merchandise management one especially with a higher struck conversion - Improve the system in such a way that the disadvantages associated with the known processes are avoided.

Thus, the task was to develop carbon monoxide with water vapor and carbon dioxide and hydrogen in a process which would allow the contact gases to contain latent heat of condensation and the sensible heat of the contact gas in a heat consumer as Ubereohußwärmi largely use bu.

This object is achieved by using water in circular runners as a heat transfer medium, wiping converted Qas in the inside moist and fresh gas in the saturator according to the invention in that the converted Oe * after the heat exchange with the frieohgee, gepbenenfells at increased »pressure, in two separate humidifiers, that operated at different temperatures and through water circuits with the equally separated |

Saturators are connected, cooling continues and da · 0 ··;

one to a «i ^ hen dl · both Int moist he geeohalted Wtrm # - instead of flowing through it, with a weeefctlloher portion

CU98A9 / U97

Atf tu Ami koHMMitrtta Oti iur VtrfUguag ttthtaAta latent KondaatttloatwtrM At · WteterAtApfet and Ait fUhibftvt Wämatagt At · OtMt discharged uaA wirtsohsftlioh Be tared.

^V <Vaeh AMi the inventive method can in principle also be operated without pressure, but te recommends working under pressure, so that increasing pressure also increases the efficiency of the process 20 to 50 *% achieved.

Ia colder circle on the bottom of the water is already rorgakUhltan Xontaktgaaaa in tine «iweittn Int · humid, whereby also here, 4 · & ao ^{& dtn} technological requirements, a part of the water - corresponding to the already known procedure * in a surface possible deep tea temperature is cooled. The Tom contact gas transferred to the Krtielaufwaeeer in the "wide Intfeuchter" is sub-feeding and saturating the Priachgaeea nit ΙββιβΓάβηφί in elnea first saturator. In a circuit operated at a higher temperature, the water la indirect heat exchange with the contact gas is brought to the highest possible temperature τοη at about 140 to 220 ⁰ O and then given to the second saturator for further brightening and saturation of the fresh gas. Until the water that leaves the saturation is then heated up again in (learn) the humidifier by the contact gas in direct heat * and material condensation.

The one in the heat exchanger that swisohen the two The dehumidifier is switched on can sam warm up τοη Keeaelepei eewaeeer or sur Breeu gung τοη Miederdrsekdempf be auagenutit. Dsbti trfoXgft a cooling of the oaee to below the dew point. Bt is Tortailhsft, the ta heat exchange from the qaecond * sat great or partly as Speieewaaser for Ata Wsrmsau, operated as a steam generator, just asher tu nuttta

009849 / U97

LP 664 - 5 -

The feeling of exhaustion then takes place in the prepared geuriuiiton -3i * iöiton dehumidifier with the help of de; j water;:! ouch dam kai doors open the door, the dabot aua the contact ;; 13 kmidenaioi.'endan Wa-aoerdampfmßngen aind in the iiet / fil greater ala 'ii <Q in the harvest saturator quantities consumed »uo rl.aü a bsyfctinmbe v '/ aaüermsnga aua can be deducted from this cycle muli ,, Dtio iüi v / poorer circulation vifaaser deficit wi ^ ci tJurcsh dieaea überachußveaaser as well as by a part ; .l3 ?. ' Conditional amount that is in the WtirniQaus ta anchor from the Kon f; ak fcgao aua füll t, au ageg.lichon.

Dna demonstration is explained in a presentation -) * h ι · j ί id -Χ a ί · β -j he ilia ti π ch β η 2 β ich tin ng na oh ο t β h ei id:

Sin iraJl '^ n, ji'i'iijv-hiiäij ialt standing under a DrueIr of 30 at; ^! nam GO-GehaH of about 47 VoL. ~% Is in ■ -; lj: n; i Μΐ ·: ΐί; - · ^ίη:. - * iü- ft igar tu 1 and a second Giittlger hui 1 '-) 2 ^{Μ Π} nufgfihoict and aaaerdmnpf genutttgt with Y /. Da- nv.-hw ■: 'Foi & b Mo ^ aitare preheating to 33 *>' ¹ C in the Oegenij " ^! " I '-..- m ^ α Ui Kn'ifciktijus in the WUrmeaua exchanger η 3 and 4. j) "'I- Vraat'.danipf is drawn via valve 5 to the priocfcigae3 £! 3i ;;; t» Var entry into converter 6 is the fresh handle; Ira heat exchanger 7 on a reaction atanparatur 'roil JiJ ⁰ O iiutgöhaLzfci the heat used for this purpose is dliii au.i the rr ^ lth layer of the converter 6 with a ΐ oüspara of 410 ° G entering before converted Gaa

i / acti Vörlaassn the ei'afcen Katai ^ aatorachicht is ds ν fin I ^ 11 ¹ orn through egg.tidüsen von Waaaer aua dam Wasaerkrela-! .IiU (Ο, 4Β6 Irp / liiü- * Kohgau) through the pipe 8 in front of L , i ^s £ 7; £ it * m K-Uül. / aatüraohicht zwiachönga cools. Daa vorkoii ^ '^ fciet' ^ ö Gau occurs with a temperature of 370 0 Ι / 41 $ ti%> it, t (: TcIiIoafc «iea Convertaro 6 and; lr:";. ::!?,. « 1t οία or fampsratur 'of 375 ⁰ G and ή In an ^^ l-iH -rau j Vo] * · ■% £, Mia «« B KontüktgaH then becomes .Lsi den i ^ i'B'i? Tau μ hur »N 1 and 3 to a temperature of 252 - ·: .-, 'kul3 H :, ib» ih iHu'ciiafcrtimen das naohge.inhaltatau vvv- vxf: ϊί · ■ * »··"<*} fe " ? itt 1h9 Kant α ktgaa raSi one ■ »■■ · :;" i '.} /''ii in -1'-? ^f i · »{·?!; eii E.! it wetter 10 to Jana oh In

BAD CRiCiNAL

LP 664 ~ 6 ~

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? ' . ' -1 ■: ί: ί. - ϊ fi : <: \; - A: i j .; -im, -. i..t /: i .- :( t. '.! l'b8 £' til <! h VOiI \ [G C blö! 50 Ö ■ -. ', - ν ■: ■> ■■ · .-) you _; - - ^ t: ί ι r; .-> · / ^: <'-. \ Λ nita hum in the second ent * ■■'»'■ - ίη, * · ι- l; * au lan _: / i: i τ duü k; ii door circuit üoer i ..- _i: ;;!: i _; λ / i iuü füii »ii: i ... si; rttV, * - fi'iiiiisif-inj ^ äriue becomes in the first. '■ •, t ti i.vet'! ; γ,> l.-jü Fi-iß; H,; IAi ab ^ sgehöii. The pump «13 C '■ .i.'iij'i. I: ti; l'V'i :. .:;,;: ίΓ · ■ λ -'C ^ r / <> ui Sivultön Entfsuchtar \ 2 bj; i jiiidi «-räuuer:; ? ^u: / '' a H ^"<J> 0 UUF d 'a first ünttii ar 1" i. fl :: \ M ^ G l "b i ■"; Ι ...-..- i J'iJ Ota-kab ta Π 03 im Synfcem π i ■: * · f ■ -iii IiKi ij i) r ■ ·· i.'i ii 1 ".! V ^; -i - / - WLv hen dam saturator 1 and ■■ ϊ ■ * .v. ^!: 'pU ^ iit Ki; ν: - i: f / ν ;:. ^ / ii''1; ρ / · -. "^ asks dna Wuuaer '';: ■ {; 'i; i · :!' ϊ ι «?! = ;; .. ':. <■■} L ¹ f ^f > n l.'O "'"' ν o, u Jättiger 1 zum Ent-ί "u - '^ tir ä."., I ⁽ .r: j'il.i ^ l ·: ·; 7, a: .i.'i ^ i'iJ v is used before Auf ^ abo on · ■ ·. · · ■:>'.(' -ι :> ■■ Ul ri! ". ■. U-JTt (..- iAiiLiihier 11 rnltteld Γ.- ·; .-. ,, - ii ^ r.-. --ΜΓ \ iw 'PfMi.-H'Mt-ii' vwii 40 ⁰ C nb-ekühlt. . the .. ■ <^ i> - ίίί 'ίΐϋα | · ^i; Te.r.'hti'ü ¹ IO i.'ii.t äliier iTemperatur of.

μ -. vV: ■ Mr P ^ ₁ ¹ J: '^; 5 .jr .. .j; i: i Uacti.-.- ur 2 printed and yor- i: · - ' ■ .; » vj; 4 / ic <· :; r - :. v .. ^j 'V;Miii>? J on aim * temperature of 195 C ■■ • uif; - ': iioi7.t- ka -.'- i liiei ·; ·.; »Ϊ.ι / Γ. · Ί · in Ί & ν Hegel the pressure difference •. ■ • ■ .li-i'-iiftn do ;:: j- ^: i. ··. ^r t, <f »r · i uni daii: Defeuohte.? 12 to ·.! ■? K: · ", 1 i-ii- · IULV; * -;""*!·;:. Lt i *! ./ iüi ¹ Τ *? Ι;: μ? J.'atur VOtI 1 6 3 ° G VOJtt ■ ν ·!.!. ·.; ^ Ϊ- J vui: bn hat, f- ;; » Writer? N ^ u promote. Dan Oil ·: i -.- i iixnl; \ r: i - ;.) '···; c ^; jj! Üi! Ί: β reu Kroltj] uiffc.'i wifd »auaaiiunen i.-iifc; -: Ln-im i'etl ^! di; u '.' /:. u · me muh ta us-, her 11 accruing ';.; «:«. .laoaaatii.i, .rs ϋ >-; · -Χυη; Α «le ^; i V / a3iierdefizit3 in the

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BAD OFMGINAt

Claims (1)

Terfafcrea mv Ktawtiereag * oa tfialatJMMlU «a \% ma **** Md1nrli MMt limfrtiff at arhSate * ftreek, eartar fW itMlat ife I * fiuurt ·· ffMMT «1« iita «tiiM« iwImMb «mi Om ta aitf «ooht« · MA * m DfUMfM I «9ItItMVt MMMOMiOhMt ₉ 4üB «M MWtJTt · Q ·· MOh IKrMMuatauBoh «it 4mi KrlaohM« in Mti fttVftMtoa letf «ueht« rn (10 | 12), dl · b »i oat« r «ohUdIIcMA tMptfftttiTM are operated m4 dar oh V« Merkrel «li« f% alt it »« Mafall · separate ltttig «ra (If 2} in Terblataac« teäta, »parentgekühlt nird and de« Ge · a tnieohen dl «Int wetter geaoheltenen ürMaattaiMoh« (11) where el «» β ee nt High proportion of au · de «koaf« rtitvt "A Ott sur TerfUgung existing latent condensation mKnM Mt Waeaerdaapfe" as well as the tangible färaeaente dta Qattt can be removed and economically exploited, 2. Terfehren naoh Anepruoh 1 »daduroh ctktanMlohatt, that the university entrance qualification for a "ftrook Toa 80 ti · 50 at not operated 3 · Terfahren naoh Anapruoh 1 uad 2, dadurth ftkaan- * elohnet that dlt in the commodity consumption dooher do * the request atMadt Abwäraw sur warming up tone Keaeelepelaewaattr odat b «p Xrseugung τοη Hiederdruck-Daapf Ttrwtndtt becomes ** 4. Procedure, naoh Anepruoh 1 bia 3, dadaroh gtktnfi · ee Ichnet that there · in Wiretauetauher (11) accruing «Qm * condensate Tolletändie or tellwtl · · ala lpe1 about · aer for the heat consumer operated by all steam generators will. BAD OP'GINAL 009849 / U97 Blank page