WO2017054949A1 - Élément d'acheminement de gaz pour transporter des flux de poussière - Google Patents

Élément d'acheminement de gaz pour transporter des flux de poussière Download PDF

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Publication number
WO2017054949A1
WO2017054949A1 PCT/EP2016/066572 EP2016066572W WO2017054949A1 WO 2017054949 A1 WO2017054949 A1 WO 2017054949A1 EP 2016066572 W EP2016066572 W EP 2016066572W WO 2017054949 A1 WO2017054949 A1 WO 2017054949A1
Authority
WO
WIPO (PCT)
Prior art keywords
dust
auxiliary gas
part according
pipe part
housing
Prior art date
Application number
PCT/EP2016/066572
Other languages
German (de)
English (en)
Inventor
Maximilian Maiwald
Frank Hannemann
Manfred Schingnitz
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2017054949A1 publication Critical patent/WO2017054949A1/fr

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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
    • C10J3/46—Gasification of granular or pulverulent flues in suspension
    • C10J3/48—Apparatus; Plants
    • C10J3/50—Fuel charging devices
    • C10J3/506—Fuel charging devices for entrained flow gasifiers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
    • B65G53/16—Gas pressure systems operating with fluidisation of the materials
    • B65G53/18—Gas pressure systems operating with fluidisation of the materials through a porous wall

Definitions

  • the invention relates to a pipe part for conveying a solid particulate material under high pressure with the features of claim 1.
  • the invention relates to a device for the continuous pneumatic conveying of dusts in the field of flow conveying at conveying densities of 100 to 550 kg / m 3 .
  • the gas supply element is used in the supply of fuel dust in reactors for entrained flow gasification, in the tuyeres of blast furnaces and in the supply of
  • the feeding of the fuel dust into the gasification system which is under the above-mentioned pressures takes place by means of a pulverized fuel carrier gas suspension with conveying densities of 250-450 kg / m 3 in the region of the flow conveying.
  • the fuel dust produced in a grinding and drying plant is fed via a conventional Dünnstrom employed an operating bunker and separated the carrier gas through a filter.
  • For increasing the pressure of the combustible dust passes via Schwerkraftförde- tion in pressure locks, in which the dust by stringing with an inert gas with less than 5% oxygen on the ge ⁇ desired process pressure is brought.
  • Inert gases may be nitrogen, carbon dioxide or waste gases from combustion. be used.
  • the pressure locks can be executed once or several times. From the pressure locks, the fuel dust enters again by gravity in a
  • Dosing vessel in the lower part of a device for generating a dense fluidized bed is arranged, in which dive one or more delivery lines for transporting the fuel dust to the burner of the gasification reactor.
  • Dosiergefäß and the gasification reactor can be supplied to the desired Brennstaubmenge.
  • the patent document EP 0872 689 describes the conveyance and metering of dry lignite dust into the furnace of steam generators, whereby also the flow promotion at high density is used. These technologies require a continuous and measurable and controllable flow promoter to the gasification targeted respectively combustion processes and sure to be ⁇ drive. Due to the arrangement of the gas supply elements in the delivery lines, it is possible to influence by supplying the conveying gas, the supported amount of dust which För ⁇ the velocity, the pressure differences and the continuity of the dust flow. The gas supply elements must be designed in such a way that length expansions, which can occur as a result of changes in temperature or pressure but also in the action of forces from outside, do not lead to the destruction of the element.
  • Patent document WO 2004/087331 discloses methods and devices for conveying pulverulent material, namely plastic dust, wherein a filter element made of sintered metal is used for the supply of auxiliary gas.
  • the filter element is sealed against the housing by means of vice ⁇ Bende frontally pressed seals.
  • Patent document EP 1824766 discloses a tube portion for loading ⁇ promote a solid particulate material, wherein the filter ⁇ insert is sealed via radial soft seals to the housing and allow for the annular gaps a gleitverschievouse Move ⁇ friendliness of the filter element in both directions. When clogging of the annular gap, for example by dust ⁇ entry from the transported material, it can be to solidify the filter element come that can ultimately lead to its damage supply.
  • An auxiliary gas element is known from the patent document DE 102014202236, in which the filter element is fastened at its one end and has an annular gap at its other end for accommodating changes in length.
  • the sealing material may be provided by a sealing ring or O-ring, has material properties, on the one hand avoids the penetration of dust into the annular gap and on the other hand has ei ⁇ ne sufficient elasticity to allow a limited axial displaceability of the filter element.
  • the rela- tive freedom of movement of the filter element remains intact slightest ⁇ tet, which damage is prevented.
  • the sealing material can be made of rubber, silicone but also
  • the sealing ring can with a be made certain undersize of its inner diameter compared to its adjacent inner tube diameters.
  • the sealing material may be configured such that it protrudes UNMIT ⁇ ly after the assembly with a certain supernatant in the adjacent tube inner diameter.
  • the internal diameter of the sealing ⁇ rings is then ground to the inside diameter of the adjacent pipe parts, but which the inner diameter of the seal ring with the inner diameters of the adjacent tube parts is free of a transition also smoothly.
  • an annular gap is filled by a sealing material, whereby possible
  • the gas supply element according to the invention has a long-term availability.
  • the filter element 1 is fixed on one side to the housing 2, wherein changes in length on the other side of the filter element are compensated without unwanted movements of the filter element altogether auftre ⁇ th.
  • the filter element 1 on both Sei ⁇ th annular gaps which are protected by inserting sealing material against dust entry.
  • Filter element and 2 shows a gas supply element with annular gap on both sides.
  • the delivery lines begin in the fluidized bed area of a metering vessel and end at the gasification burner.
  • the pressure is 4.2 MPa.
  • the dust conveyor lines are equipped with measuring, control and monitoring equipment.
  • a plurality of gas supply elements according to FIG. 1 are located in the dust delivery lines 10 and serve to measure the pressure and supply additional carrier gas or auxiliary gas.
  • the gas supply element according to FIG. 1 has a tubular filter insert 1, which can be formed with sintered metal, sintered plastic powder, wire mesh or synthetic resin-bonded gravel and is embedded in the divided housing 2.
  • the tubular filter element 1 is fixed on one side to the housing 2, wherein the fastening elements 5 may be screws or pins. Likewise, it is possible to achieve the fastening ⁇ tion by a sealing clamping ring instead of the seal 4. Furthermore, it may be an adhesive bond. Between the filter element 1 and the split housing 2, a gap 3 is left, which - to prevent the ingress of dust from the conveyed - with a filling or. Lining material is lined. As filling or sealing material elastic materials, such as rubber, plastic or cords ⁇ come into consideration.
  • the housing seal 6 is located between the two parts of the housing 2, the seal 7 between the tubular filter insert 1 and the housing 2.
  • the auxiliary gas passes through the auxiliary gas 8 in the filter chamber 9, in which the auxiliary gas is distributed, and passes through the porous tubular filter insert 1 in the dust stream 10th
  • the filter insert (1) has at one end a flange for fixing in the housing (2).
  • the filter insert (1) at the end with the flange under pressure-tight seal with the housing (2) is connectable.
  • the seal between the flange and the housing (2) is given by a seal pressed in the axial direction.
  • the seal between flange and housing (2) by a radially supporting seal (4, 13) is given.
  • the filter insert (1) with the
  • the filter insert (1) with the GePFu ⁇ se (2) is glued.
  • the flange of the filter element (1) is fixed to the housing (2) by means of a fastening element (5), in particular a screw connection, a pin connection or a sealing clamping ring (4).
  • a gas supply element as part of a dust delivery line 10 for pneumatically conveying dust streams, comprising a split housing 2, a supply of auxiliary gas via an auxiliary gas supply 8, a filter chamber 9 and a tubular filter cartridge 1 in the dust stream 10, wherein the filter cartridge 1 via sealing rings 4, 7 is sealed against the split housing 2, wherein the tubular filter element 1 is fixedly connected on one side with the split Ge ⁇ housing 2 by fasteners 5 or an adhesive bond and caused by temperature or pressure changes in the dust delivery line 10 caused changes in length of the tubular filter element 1 are received by the expansion gap 3 and wherein the expansion gap 3 is provided with sealing ⁇ or filling material to prevent the ingress of dust from the conveyed.
  • a gauze feed element according to FIG. 2 is used.
  • the tubular filter element 1 has at both ends of expansion gaps 3a and 3b, which are also filled to Verhinde ⁇ tion of dust entry with a sealing and filling material.
  • the filter cartridge 1 may move in the direction of the gaps 3a and 3b to accommodate longitudinal expansion or shrinkage.
  • the filter insert is radially supported in the housing and axially guided. The radial support may be given by an elastic round cord seal, which also acts pressure-sealing.
  • the auxiliary gas likewise passes via the feed 8 into the filter chamber 9 and through the porous tubular filter insert 1 into the dust stream 10.
  • a gas supply element as part of a dust delivery line 10 for pneumatically conveying dust streams, comprising a split housing 2, a supply of auxiliary gas via an auxiliary gas supply 8, the filter chamber 9 and the tubular filter cartridge 1 in the dust stream 10, wherein the filter cartridge 1 is sealed by sealing rings 4, 7 against the split housing 2, wherein between the tubular filter element 1 and the split housing 2 are two expansion gaps 3a and 3b, record the changes in temperature caused by temperature and pressure in the dust conveyor line 10 length changes of the tubular filter element 1 and wherein the expansion gaps 3a and 3b are provided with sealing ⁇ or filling material to to prevent the ingress of dust from the conveyed material.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

L'invention concerne un dispositif pour transporter des flux de poussière dans des réacteurs pour la gazéification à flux entraîné, dans les tuyères de hauts-fourneaux, dans des chaudières avec combustion du charbon pulvérisé et pour le transport par écoulement des matières fines comme la chaux pulvérisée, le ciment ou les granulats de plastique. Le dispositif sert à acheminer du gaz auxiliaire par une membrane poreuse (1) dans la conduite d'acheminement de poussière (10) afin d'influer sur la densité de transfert, sur le débit et sur la chute de pression et de pouvoir contrôler les processus de régulation. L'élément d'acheminement de gaz selon l'invention comprend une fente d'expansion (3, 3a, 3b) entre l'élément filtrant (1) et le boîtier (2) qui est remplie d'un matériau d'étanchéité élastique empêchant ainsi toute pénétration de poussière dans la fente d'expansion (3, 3a, 3b). La liberté de mouvement relative de l'élément filtrant (1) reste garantie, prévenant ainsi tout endommagement.
PCT/EP2016/066572 2015-09-30 2016-07-13 Élément d'acheminement de gaz pour transporter des flux de poussière WO2017054949A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015218875.2A DE102015218875A1 (de) 2015-09-30 2015-09-30 Gaszuführungselement zum Befördern von Staubströmen
DE102015218875.2 2015-09-30

Publications (1)

Publication Number Publication Date
WO2017054949A1 true WO2017054949A1 (fr) 2017-04-06

Family

ID=56413652

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/066572 WO2017054949A1 (fr) 2015-09-30 2016-07-13 Élément d'acheminement de gaz pour transporter des flux de poussière

Country Status (2)

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DE (1) DE102015218875A1 (fr)
WO (1) WO2017054949A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019003028A1 (fr) * 2017-06-28 2019-01-03 Nol-Tec Europe S.R.L. Appareil pour la fluidification et le transport de matériaux granulaires ou de poudres

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3679271A (en) * 1969-11-19 1972-07-25 Brunswick Corp Support for a fluidized bed
DE202010005876U1 (de) * 2010-04-20 2011-08-10 Hermann J. Linder Vorrichtung zum Einspeisen oder Anlegen eines Druckmediums in eine Feststoffe fördernde Rohrleitung
DE102014202236A1 (de) * 2014-02-07 2015-08-13 Siemens Aktiengesellschaft Hilfsgaselement zum Befördern von Staubströmen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19715973A1 (de) 1997-04-17 1998-10-22 Krc Umwelttechnik Gmbh Verfahren und Vorrichtung zur Förderung und Dosierung von Trockenbraunkohlestaub in den Feuerraum von Dampferzeugern
DE10393291D2 (de) 2002-10-14 2005-07-28 Boerger & Co Gmbh H Verfahren und Vorrichtung zum Fördern von pulverförmigen Material
US8801340B2 (en) 2004-12-17 2014-08-12 Shell Oil Company Pipe part for conveying a solid particulate material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3679271A (en) * 1969-11-19 1972-07-25 Brunswick Corp Support for a fluidized bed
DE202010005876U1 (de) * 2010-04-20 2011-08-10 Hermann J. Linder Vorrichtung zum Einspeisen oder Anlegen eines Druckmediums in eine Feststoffe fördernde Rohrleitung
DE102014202236A1 (de) * 2014-02-07 2015-08-13 Siemens Aktiengesellschaft Hilfsgaselement zum Befördern von Staubströmen

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DE102015218875A1 (de) 2017-03-30

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