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EP3504302A1 - Système de refroidissement de gaz brut - Google Patents

Système de refroidissement de gaz brut

Info

Publication number
EP3504302A1
EP3504302A1 EP17771371.6A EP17771371A EP3504302A1 EP 3504302 A1 EP3504302 A1 EP 3504302A1 EP 17771371 A EP17771371 A EP 17771371A EP 3504302 A1 EP3504302 A1 EP 3504302A1
Authority
EP
European Patent Office
Prior art keywords
quench
raw gas
water
central tube
gas
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.)
Withdrawn
Application number
EP17771371.6A
Other languages
German (de)
English (en)
Inventor
Tino Just
Friedemann Mehlhose
Darek Schmauch
Andreas Meissner
Ralph Schumann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP3504302A1 publication Critical patent/EP3504302A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72—Other features
    • C10J3/82—Gas withdrawal means
    • C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
    • C10J3/845—Quench rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/06—Spray cleaning
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/46—Gasification of granular or pulverulent flues in suspension
    • C10J3/48—Apparatus; Plants
    • C10J3/485—Entrained flow gasifiers

Definitions

  • the invention relates to a Rohgaswaschsystem in an entrained flow gasification device for the reaction of ash-containing fuels with a free oxygen-containing gasification agent to a crude gas with a high hydrogen content, in which the fuel in a gasification reactor at temperatures of 1200 to 1900 ° C and Process pressures up to 10 MPa to raw gas and liquid slag is reacted.
  • the invention relates to a device for quenching and purifying raw gas of an entrained flow gasifier in which a quench space is arranged within a pressure jacket under a reaction space, a guide tube leading from the reaction space into the quench space projects into the quench space and the quench space above a quench sump projects the pressure jacket having passing raw gas outlet.
  • the entrained flow gasification is used for the gasification of various carbonaceous fuels.
  • the reactors used consist of two rooms. In the upper part of the fuel is gasified and, if present, the ash melted. The hot raw gas is fed to the second space (quencher) together with the liquid slag. Under
  • Injection of water takes place in addition to the cooling of the raw gas, the sudden solidification of slag instead.
  • the desired cooling of the raw gas to saturation temperature is called full quenching.
  • the required quantity of quench water is subjected to a safety factor in order to prevent the break-through of hot raw gas into the raw gas outlet.
  • Scrubber quench can be called.
  • the specified internals, in particular the cooled area of the central tube, are expensive.
  • Quenchers has a significantly reduced cargo of particles and on the other hand, the quencher can be safely operated.
  • the problem is solved by a quencher with the features of claim 1.
  • Quench tube decreases the pressure difference, while increasing the mass flow rate.
  • the quench water acts in variants 1 to 3 as quench water and as cooling water for the quench pipe.
  • Quench water is thus assigned an additional function.
  • the benefit lies in additional component cooling without the need to expand existing cooling systems.
  • the quench water is conditioned, in particular with regard to solids content and proportion of dissolved carbonates.
  • the quench device according to the invention has a low water consumption based on the quenching effect.
  • Quencher can be applied to the higher power reactors (greater than 500MW).
  • a conventionally arranged skirt with the entire measurement technology can be omitted.
  • an integration of the monitoring in existing measurement and control technology of Quenchheimnikanks is possible.
  • FIG. 2 detail A from FIG. 1, 3 as variant 2 a free space quench with closed, self-cooling central tube,
  • FIG. 8 shows detail A from FIG. 7, FIG.
  • FIG. 10 shows detail A from FIG. 9.
  • Quench tube can be made conical.
  • the cooled quench tube (4) is connected to the slag drain body (3) in a gastight manner.
  • the quench tube (4) and the central tube (8) have a double jacket.
  • In the intermediate space is water for cooling the jacket, in particular for the side which limits the quench zone (7).
  • Quench tube (4) the quench nozzles (5) are screwed. They are supplied via the intermediate space, water jacket of the quench tube (4). Thus, large amounts of water are available for cooling the quench pipe without the need for a new water source.
  • the quench water (6) is thus assigned a new function in the form of cooling the quench pipe.
  • the quench water (6) is via the quench nozzles (5) of the quench zone (7) and provides a full quench in the central tube
  • the central tube (8) is also cooled via the space, water jacket.
  • the water used for cooling is then injected via the washing nozzles of the central tube (9) in the quench zone (7). This ensures sufficient flushing of the central tube to prevent deposits and blockages.
  • the fully quenched raw gas leaves the central tube (9), is deflected and flows in the outer annulus (13) towards the raw gas outlet (16).
  • additional washing devices shown here with countercurrent scrubbers, 14 and 15
  • the crude gas leaves the reactor via the crude gas outlet (16).
  • Residual quench water (from 6) as well as the wash water (10) from the central tube (8) and the wash water (15) optionally injected in the annular space (13) accumulate in the quench water sump (11) in the water bath. This water is withdrawn into the flash system (12). The slag with a portion of the water from the Quenchersumpf (11) is fed via the slag outlet (17) the downstream slag discharge system.
  • Variant 2 is shown in FIG.
  • the cooled central tube (8) (identical to variant 1) is submerged in the quenching sump (11) in the water bath.
  • the in the central tube (8) fully quenched raw gas is deflected in a water bath and rises to the water surface in the outer annulus (13).
  • Quench and central tube (4.8) has.
  • the mode of operation corresponds to variant 1.
  • the quench tube (4) is not attached in a gas-tight manner to the slag drain body (3).
  • slag drain body (3) and the quench tube (4) are not attached in a gas-tight manner to the slag drain body (3).
  • Quench tube (4) exists a defined gap (18). Cold, saturated raw gas flows from the outer annular space (13) into the quench tube via this gap (18). Thus, the upper region of the quench tube (4) is additionally cooled with cold gas, but the flow of cold gas also prevents hot raw gas from collecting behind the quenching orifices (5). The risk of damaging the quench nozzles (5) and the upper quench pipe (4) is reduced.
  • Variant 4 is shown in FIG. From the reactor (1), the hot raw gas and the molten slag are passed over the slag exhaust body (3) into the quench zone (7).
  • the quench zone (7) is bounded by the central tube (8). This has a double jacket, which is completely filled with water. This water ensures safe cooling of the central tube.
  • the cooling is ensured by heating and partial evaporation of the cooling water.
  • the resulting vapor in the central tube is discharged via a drain valve (19) in the outer annular space (13) and enters the raw gas.
  • the losses of cooling water are compensated by the make-up (18) with fresh cooling water.
  • the evaporation of the cooling water in the central tube requires large amounts of energy. For this reason, the cooling water requirement for the central tube can be minimized. Damage to the central tube can easily be detected. In the event of damage, the amount of water to be replenished increases abruptly.
  • the quench nozzles (5) In the upper part of the central tube are the quench nozzles (5). Below are the washing nozzles (9) arranged. The quench nozzles and the washing nozzles are supplied via separate lines (6, 10). It will be one
  • Quench water 6) and the washing water (10) from the central tube (8) and in the annular space (13) optionally injected wash water (15) collect in the quenching sump (11) in the water.
  • water is drawn off into a flash system (12).
  • the slag with a portion of the water from the Quenchersumpf (11) is fed via the slag outlet (17) the downstream slag discharge system.
  • Variation 5 is shown in FIG. From the reactor (1), the hot raw gas and the molten slag are passed over the slag exhaust body (3) into the quench zone (7).
  • the quench zone (7) is bounded by the central tube (8).
  • This has a double jacket (8), which is cooled with water. This cooling water is taken from an external cooling circuit.
  • FIG. 9 shows an inlet (18) and two outlet nozzles (19). The final number depends on the geometry of the dip tube (8) and constructive boundary conditions. The dissipated heat must be given off again by a suitable heat transfer process.
  • the quenching and the subsequent process control corresponds to variant 4.
  • the present invention has been explained in detail for illustrative purposes with reference to specific embodiments. In this case, elements of the individual embodiments can also be combined with each other. The invention is therefore not intended to be limited to individual embodiments, but merely to be limited by the appended claims.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treating Waste Gases (AREA)
  • Industrial Gases (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

L'invention concerne un système de lavage de gaz brut avec un taux de séparation de particules fines élevé, dans un réacteur de gazéification à flux entraîné pour la conversion, à l'aide d'un agent de gazéification contenant de l'oxygène libre, de combustibles contenant des cendres en gaz brut présentant une teneur élevée en hydrogène, les combustibles étant convertis en gaz brut et en scories liquides dans un réacteur de gazéification à des températures de 1200 à 1900°C et à des pressions de traitement de 10 MPa. Selon l'invention un anneau de lavage additionnel, lequel effectue un lavage du gaz brut, est disposé dans une chambre de refroidissement agencée pour un refroidissement en espace ouvert. Cette configuration permet de réduire dans une mesure importante la charge en particules du gaz brut dans la sortie de gaz brut, ce qui permet d'alléger les étapes de purification ultérieures du gaz brut.
EP17771371.6A 2016-09-29 2017-09-12 Système de refroidissement de gaz brut Withdrawn EP3504302A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016218855.0A DE102016218855A1 (de) 2016-09-29 2016-09-29 Freiraumquench mit selbstkühlendem, mehrmanteligem Zentralrohr
PCT/EP2017/072798 WO2018059924A1 (fr) 2016-09-29 2017-09-12 Système de refroidissement de gaz brut

Publications (1)

Publication Number Publication Date
EP3504302A1 true EP3504302A1 (fr) 2019-07-03

Family

ID=59923404

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17771371.6A Withdrawn EP3504302A1 (fr) 2016-09-29 2017-09-12 Système de refroidissement de gaz brut

Country Status (5)

Country Link
US (1) US20190225898A1 (fr)
EP (1) EP3504302A1 (fr)
CN (1) CN109790476A (fr)
DE (1) DE102016218855A1 (fr)
WO (1) WO2018059924A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021048351A2 (fr) 2019-09-11 2021-03-18 Michiel Cramwinckel Procédé pour transformer un déchet polymère en un produit gazeux
CN112029542B (zh) * 2020-08-17 2021-10-26 新奥科技发展有限公司 加氢气化系统及方法
CN113278449A (zh) * 2021-04-26 2021-08-20 国家能源集团宁夏煤业有限责任公司 干煤粉气化炉激冷组件和干煤粉气化炉
CN117089371A (zh) * 2023-09-19 2023-11-21 中国石油大学(华东) 干法排渣的y型气流床高温分区气化装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2697100Y (zh) * 2003-07-29 2005-05-04 陈家仁 双火层烟煤水煤气发生炉
DE102013209912B4 (de) * 2013-05-28 2015-08-20 Siemens Aktiengesellschaft Schlackeablaufkörper mit thermisch geschützter Abtropfkante
DE102013217447A1 (de) * 2013-09-02 2015-03-05 Siemens Aktiengesellschaft Kombiniertes Quench- und Waschsystem mit Innenmantel für einen Flugstromvergasungsreaktor
DE102013218830A1 (de) 2013-09-19 2015-03-19 Siemens Aktiengesellschaft Geteiltes Zentralrohr eines kombinierten Quench- und Waschsystems für einen Flugstromvergasungsreaktor
DE102014201890A1 (de) * 2014-02-03 2015-08-06 Siemens Aktiengesellschaft Kühlung und Waschung eines Rohgases aus der Flugstromvergasung

Also Published As

Publication number Publication date
US20190225898A1 (en) 2019-07-25
WO2018059924A1 (fr) 2018-04-05
CN109790476A (zh) 2019-05-21
DE102016218855A1 (de) 2018-03-29

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