Classifications

• • 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
  • B65G53/34—Details
  • B65G53/58—Devices for accelerating or decelerating flow of the materials; Use of pressure generators

Definitions

• the invention is directed to a device for feeding a fluid, such as a gas or a liquid, into a solids conveying line, wherein the fluid is first conducted into an annular space surrounding the solids conveying line and from there into the solids conveying line.
• a fluid such as a gas or a liquid
• the invention is based, for example, on EP 1 824 766 B1, in which the solids conveying line is formed within a housing, which forms an annular space, from a permeable material and is arranged longitudinally displaceably within the housing via annular seals on both sides.
• pneumatic conveying is known.
• a rough distinction is made between thin stream and dense phase conveying.
• the state of the art includes US Pat. Nos. 3,152,839, 1,152,302 or DD 0,154,599.
• the dense phase conveying is characterized by comparatively low feed gas and a both the solid and the delivery line gentle operation and is used in a wide range of applications, such as the promotion of dust, fly ash, cement, but also in the food and pharmaceutical industries, the procedural parameters to carry out a pneumatic conveying in sealing or in the thin stream, have long been known and with increasing demands on technical systems, such as plant availability, downtime, investment costs, maintenance ef? ciency etc., novel solutions are required that meet these increasing demands .
• EP 1 824 766 B1 there are other solutions which describe the feeding of gases for solids delivery, eg to fluidize the solid at the beginning or during the promotion to influence the delivery density or to rinse pipe sections :
• WO 2004/87331 A1 a system for conveying pulverulent material, in particular powder coatings, to a spray application device is described.
• a double-walled tube element is used, which is also provided for the introduction of air into the powder with a permeable inner wall, consisting of sintered metal.
• the double-walled element described in WO 2004/87331 AI provides no expansion recordings, but is completely screwed according to the description and sketches using compressed air hose technology. Therefore, use in the operating area planned here (high temperatures and high pressures) is not possible and not transferable.
• the object of the invention is to provide a device for conveying eg dusty coals or fly ash in gasification plants at elevated temperatures, with high performance and high reliability.
• this object is achieved according to the invention in that the solids conveying line, hereinafter referred to as inner guide tube, in the annular space to form an annular gap is shorter than the length of the annulus, wherein in the annulus internals for swirl generation of the introduced fluid are provided.
• the annular space in the region of the annular gap to the solids conveying line is equipped with a funnel-shaped wall region.
• the supply line to the annular space for the fluid is positioned in the region of gravity of the upper area of the annular space when the solids conveying line is not positioned in the direction of gravity.
• FIGS. 2a-2d embodiments of the solids conveying line in FIG.
• FIG. 3 in the illustration of FIG. 1, a modified embodiment of the invention and in
• Fig. 4 is a block diagram with an indicated device according to the invention below a Fe fabric container.
• the fluidizing tube 1 'shown in FIG. 1 is formed by the housing 6, the inlet flange 2, the outlet flange 8 and the fluidizing agent inlet 4, which is connected via the flange 5 to a fluidizing agent supply system.
• the fluidizing tube is installed via the connecting flanges 2 and 8 in the solids conveying line.
• the inner guide tube 3 is fixedly connected to the inlet flange 2 of the Fluidisierrohres.
• the solid to be conveyed enters the inner guide tube 3 via the inlet flange 2.
• the diameter of the incoming solid line Dl corresponds to the diameter of the inlet flange D2.
• the inlet diameter of the inner guide tube D3 is preferably equal to or slightly greater than the diameter D2 of the inlet flange to select to avoid disturbances of the solid flow and the occurrence of wear edges at the transition.
• the fluidizing agent is supplied to an annular space 12, formed between the inner guide tube 3 and the housing 6, via the fluidizing agent inlet 4.
• the fluidizing agent distribution chamber is constricted by the cone 7 and the inner guide tube 3.
• the cone angle ⁇ is preferably to choose between 45 ° and 80 °.
• FIGS. 2a, 2b, 2c and 2d show various embodiments of the inner tube 3.
• the inner tube 3 is fixedly connected to the block flange 2, so that this element is completely quick and easy to change.
• FIGS. 2 a and 2 b show two possibilities for generating a swirl flow in the fluidizing agent distribution chamber 12 by means of patch flow bodies 16, so that improved mixing of the fluidizing agent with the solid is made possible.
• the fluidizing agent flows through the fluidizing agent distribution chamber within the flow gaps L between the flow bodies 16.
• the resulting swirl flow prevents, for example, the formation of solid bridges in the gap S2.
• FIG. 2c shows a perforated inner guide tube 3, with which the solid can already be subjected to fluidizing during flow.
• Fig. 2d shows a flow body 16, which is designed as a ring with flow grooves.
• This flow body has defined flow channels with a flow gap width L.
• the fluidizing experiences when flowing through these channels a pressure drop ⁇ (flow body), which is significantly higher in relation to the pressure loss of the deposited solids amount ⁇ (solid).
• ⁇ flow body
• FIG. 3 shows the fluidizing tube 1 'according to the invention, wherein cone 7 and outlet flange 8 consist of a component, e.g. a turned part.
• FIG. 3 also shows, by way of example, the flow body from FIG. 2d.
• the fluidizing pipe 1 ' is fastened to the pipe outlet 19 for discharging solids on the container 17 by means of pipe flange 1.
• the container 17 serves, for example, for intermediate storage of solids or as a lock for increasing the pressure of the solids stream.
• the valve 20 is opened, the solid from the tank 17 flows through the fluidizing pipe 1 'and the valve 20 into the solids conveying pipe 21.
• the fluidizing pipe can be applied variously in the circuit shown in simplified form.
• valve 20 opens to initiate the solids transport
• gas 14 is supplied in the amount such that above the valve 20 there is a local flow Fluidization begins. In this way, the switching process is simplified, at the same time is loosened by the fluidization of the solid, so that possibly resulting solid bridges are eliminated.
• Another application or another operating state is that during the solids conveying operation, the supplied gas 14 is adjusted to the amount that is necessary to set, for example, the necessary for the safe dense phase current density. If the solids delivery completed, so the container is empty, the line can be flushed by an increased amount of gas 14. Since, for example, for the first fluidization, but also the final flushing large amounts of gas are needed for a short time, the use of sintered metals is problematic here.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Air Transport Of Granular Materials (AREA)
• Rigid Pipes And Flexible Pipes (AREA)
• Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
• Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Priority Applications (15)

Applications Claiming Priority (2)

Publications (3)

Family

ID=43568092

Family Applications (1)

Country Status (18)

Families Citing this family (15)

Citations (12)

Family Cites Families (16)

• 2009
  • 2009-12-09 DE DE102009057380A patent/DE102009057380A1/de not_active Withdrawn
• 2010
  • 2010-11-09 JP JP2012542379A patent/JP2013513535A/ja active Pending
  • 2010-11-09 US US13/514,680 patent/US20120269586A1/en not_active Abandoned
  • 2010-11-09 EA EA201200848A patent/EA201200848A1/ru unknown
  • 2010-11-09 ES ES10781609T patent/ES2435813T3/es active Active
  • 2010-11-09 KR KR1020127012893A patent/KR20120120136A/ko not_active Withdrawn
  • 2010-11-09 BR BR112012013826A patent/BR112012013826A2/pt not_active IP Right Cessation
  • 2010-11-09 CA CA2780794A patent/CA2780794A1/en not_active Abandoned
  • 2010-11-09 PL PL10781609T patent/PL2509897T3/pl unknown
  • 2010-11-09 CN CN2010800556370A patent/CN102712426A/zh active Pending
  • 2010-11-09 UA UAA201208176A patent/UA104930C2/uk unknown
  • 2010-11-09 WO PCT/EP2010/006808 patent/WO2011069588A1/de not_active Ceased
  • 2010-11-09 AU AU2010330410A patent/AU2010330410B2/en not_active Ceased
  • 2010-11-09 EP EP10781609.2A patent/EP2509897B1/de not_active Not-in-force
  • 2010-11-09 DK DK10781609.2T patent/DK2509897T3/da active
  • 2010-12-06 TW TW099142350A patent/TW201124326A/zh unknown
• 2012
  • 2012-06-06 CU CU2012000090A patent/CU23991B1/es not_active IP Right Cessation
  • 2012-07-05 ZA ZA2012/05034A patent/ZA201205034B/en unknown

Patent Citations (12)

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