EP0381836A2 - Procédé et dispositif pour l'approvisionnement de consommateurs en acétylène ou en combustibles gazeux apparentés ou en mélanges de combustibles gazeux - Google Patents

Procédé et dispositif pour l'approvisionnement de consommateurs en acétylène ou en combustibles gazeux apparentés ou en mélanges de combustibles gazeux Download PDF

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Publication number
EP0381836A2
EP0381836A2 EP89122475A EP89122475A EP0381836A2 EP 0381836 A2 EP0381836 A2 EP 0381836A2 EP 89122475 A EP89122475 A EP 89122475A EP 89122475 A EP89122475 A EP 89122475A EP 0381836 A2 EP0381836 A2 EP 0381836A2
Authority
EP
European Patent Office
Prior art keywords
pressure
acetylene
fuel gas
consumer
compressor
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Withdrawn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
EP89122475A
Other languages
German (de)
English (en)
Other versions
EP0381836A3 (fr
Inventor
Karl Dipl.-Ing. Niederberger (Fh)
Peter Dipl.-Ing. Heinrich (Fh)
Bernhard Dipl.-Ing. Volz (Fh)
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.)
Linde GmbH
Original Assignee
Linde GmbH
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 Linde GmbH filed Critical Linde GmbH
Publication of EP0381836A2 publication Critical patent/EP0381836A2/fr
Publication of EP0381836A3 publication Critical patent/EP0381836A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
    • B05B7/20—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed by flame or combustion
    • B05B7/201—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed by flame or combustion downstream of the nozzle
    • B05B7/205—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed by flame or combustion downstream of the nozzle the material to be sprayed being originally a particulate material
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/129—Flame spraying
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/002—Gaseous fuel
    • F23K5/005—Gaseous fuel from a central source to a plurality of burners

Definitions

  • the invention relates to a method and a device for supplying consumers with acetylene or related fuel gases or fuel gas mixtures, that is to say gases which, as a rule, are not made available at high pressures for safety reasons.
  • Acetylene and other fuel gases related in their properties to acetylene are due to their properties, for example high energy content , high ignition speed, high flame temperature, particularly advantageous fuel gases for autogenous processes.
  • fuel gases e.g. with propane, propylene, hydrogen
  • propylene like other fuel gases or mixtures with positive enthalpy of formation
  • acetylene and related fuel gases may even react explosively at comparatively low excess pressure and relatively low ignition energy.
  • the object of the present invention is therefore to design a supply with acetylene or related gases which enables a safe supply with higher pressures with as little effort as possible.
  • This object is achieved in that the acetylene or other fuel gas pressure is raised to a desired, higher value than is otherwise available from the supply only when required and immediately before the consumer.
  • the pressure according to the invention can be increased up to 17 times, preferably up to 7 times.
  • pressures of up to approximately 25 bar, preferably of up to approximately 10 bar can be generated and important pressure ranges can be covered.
  • the method can also be used in lower pressure ranges.
  • a plurality of fuel gases for example acetylene and other fuel gases
  • acetylene and other fuel gases are mixed before the pressure increase.
  • gas mixtures for example gas mixtures with any acetylene content between 0 and 100%, can be safely produced and used at higher pressures.
  • the mixing of the gases at a low pressure level is essential here, since all the gases to be mixed are more stable at low pressures and the more stable gases then lead to greater stability of the gas mixture even at higher pressures.
  • a pressure increasing unit for carrying out the method according to the invention is characterized by a compressor with a pressure control valve connected in parallel and a check valve connected upstream of this parallel connection and a pressure reducer following this parallel connection, to which the consumer line connects.
  • a branch with a safety valve is provided in the consumer line of the pressure increasing unit and / or a monitoring manometer for the inlet pressure is arranged in the main line of the pressure increasing unit upstream of the above-mentioned check valve, which is connected to a light signal and to the compressor.
  • the branch with a safety valve ensures the safety of the device in the event of malfunctions on the output side, for example reignitions, and on the inlet side the inlet pressure to the pressure booster unit is checked by the pressure gauge located there and when the pressure drops Insufficient values for the operation of the unit triggered the light signal and caused the compressor to switch off.
  • This embodiment variant is particularly advantageous since an essential functional requirement of the pressure increasing unit is that the product px V before the pressure increasing unit is larger than the product px V after the pressure increasing device. If the pressure and volume requirements are known, a certain form may not be undercut.
  • the integration of the pressure booster unit according to the invention into a consumer device itself can be particularly advantageous. This dispenses with the arrangement and coupling of two separate devices, the pressure booster unit and consumer being able to be optimally matched to one another.
  • a particularly advantageous application of the method according to the invention is its use for high-speed flame spraying, in particular with acetylene and fuel gas mixtures with acetylene.
  • the fuel gas mixture is also produced from acetylene and one or more other fuel gases in that the individual mixing components are mixed before the pressure increase.
  • this creates a high degree of flexibility with regard to the fuel gas properties, which can be varied with the mixing ratio of the fuel gases involved, and on the other hand, due to the mixing of the fuel gas components before the pressure increase, an additional safety improvement, since a mixture of acetylene and another fuel gas is more stable than pure one Acetylene.
  • FIG. 1 shows schematically an embodiment of the method according to the invention.
  • Several branch lines 2, 3 branch off from a main distribution line 1 of an acetylene supply system connected to an acetylene source.
  • the branch line 2 is with a shut-off valve 4 and a template 5.1 Pressure increasing unit 6, which ensures the desired pressure increase.
  • Shut-off valves 7 and 8 are arranged on the inlet and outlet sides of the pressure booster unit and on the outlet side there is also a further usage point template 5.2 with a connection option for a consumer.
  • a control connection 9 can be provided for a coordinated switching possibility of the pressure increasing unit and the consumer.
  • the structure of the pressure increasing unit 6 is shown in detail. It consists of a compressor 14 arranged in a main line 10, which is connected in parallel with a pressure relief valve 15 in a line 12. After this parallel connection, a control manometer 16 and a pressure reducer 17 follow in the main line 10, with which the pressure generated by the compressor 14 is reduced to the desired level. If too great a pressure builds up between the compressor 14 and pressure reducer 17, which can be switched to various power levels in a favorable embodiment, this is reduced through the parallel line 12 and with the aid of the pressure relief valve 15 to the inlet side of the compressor 14.
  • a check valve 13 is arranged upstream of the compressor and the parallel line 12, which prevents acetylene from flowing back into the supply system.
  • a pressure gauge 20 is arranged on the inlet side of the pressure-increasing unit in the main line 10 upstream of the check valve 13, by means of which the inlet pressure is monitored.
  • the pressure gauge 20, is connected to a light indicator 31 and the drive of the compressor 14, which causes the light indicator to light up and the compressor to switch off when the pressure on the inlet side is too low.
  • the compressor 14 is also connected to an on and off switch 29, and the on and off switching process can also be effected via the control connection 9 and the connection 30.
  • FIG. 3 is intended to explain in more detail the use of the method according to the invention for high-speed flame spraying.
  • Figure 3 shows schematically a cross section through the front part of a burner head for flame spraying without showing the supply side for fuel gas and spray material in detail.
  • non-acetylene-containing fuel gases for example hydrogen, propane, propylene, since fuel gas pressures above 1.5 bar are used.
  • Acetylene pressures above 1.5 bar are now available and the use of acetylene, as will be shown below, has special advantages. As can be seen from FIG.
  • the acetylene fuel gas when used in flame spraying, is introduced together with oxygen into a combustion chamber 21, the associated feed channels 22 having a slightly conical orientation so that the incoming, burning gas jets intersect in the combustion chamber.
  • a further gas jet is guided through a central channel 23 into this intersection.
  • This consists of a carrier gas, for example nitrogen, and the metallic spray particles transported therein.
  • the spray material is melted in the flame 24 generated by acetylene and oxygen, and the entire mixture of combustion gases, carrier gas and melted spray material is passed through a main duct 25 in the burner head which adjoins the combustion chamber and finally leaves it in the form of a spray jet 27.
  • an outer spray Jacket 28 and a channel 29 formed between this outer jacket and the central channel and the combustion chamber the burner head is cooled.
  • acetylene at a pressure of, for example, 5 bar is now passed through the supply channels 22 to the combustion chamber 21 together with a corresponding amount of oxygen. Due to this high-pressure supply of acetylene, the supply pressure of the carrier gas can now be increased without the risk of the fuel gas mixture being pushed back, and this leads to High speed flame spraying with acetylene.
  • This use of acetylene in high-speed flame spraying has far-reaching advantages.
  • higher melting spray materials can be used with acetylene and with acetylene mixtures than with other fuel gases.
  • the method according to the invention with the associated device provides acetylene and related fuel gases in a very advantageous manner at higher pressure levels.
  • the advantageous application of the method in high-speed flame spraying should be emphasized in particular.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plasma & Fusion (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Nozzles (AREA)
  • Coating By Spraying Or Casting (AREA)
EP19890122475 1988-12-23 1989-12-06 Procédé et dispositif pour l'approvisionnement de consommateurs en acétylène ou en combustibles gazeux apparentés ou en mélanges de combustibles gazeux Withdrawn EP0381836A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3843436A DE3843436A1 (de) 1988-12-23 1988-12-23 Verfahren und vorrichtung zur versorgung von verbrauchern mit acetylen oder verwandten brenngasen oder brenngasgemischen und anwendung
DE3843436 1988-12-23

Publications (2)

Publication Number Publication Date
EP0381836A2 true EP0381836A2 (fr) 1990-08-16
EP0381836A3 EP0381836A3 (fr) 1991-01-23

Family

ID=6369974

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890122475 Withdrawn EP0381836A3 (fr) 1988-12-23 1989-12-06 Procédé et dispositif pour l'approvisionnement de consommateurs en acétylène ou en combustibles gazeux apparentés ou en mélanges de combustibles gazeux

Country Status (3)

Country Link
EP (1) EP0381836A3 (fr)
DE (1) DE3843436A1 (fr)
PT (1) PT92691A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT411927B (de) * 2001-04-20 2004-07-26 Vaillant Gmbh Atmosphärischer brenner

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9617441D0 (en) * 1996-08-20 1996-10-02 Boc Group Plc Coating substrates with high temperature ceramics
WO2000029635A2 (fr) * 1998-11-13 2000-05-25 Thermoceramix, L.L.C. Systeme et procede d'application d'une couche metallique sur un substrat

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1451464A1 (de) * 1963-05-02 1969-03-13 Manfred Leisenberg Einrichtung zur Befeuerung,insbesondere von keramischen OEfen,mittels Gas
DE1545336A1 (de) * 1965-03-18 1970-01-22 Oemv Ag Verfahren und Einrichtung zum Nutzbarmachen brennbarer Abgase von Raffinerien oder anderen Anlagen
JPS5857098A (ja) * 1981-09-30 1983-04-05 Mitsubishi Heavy Ind Ltd ジエツトエンジンのシ−ジ検出装置
EP0099037A1 (fr) * 1982-07-01 1984-01-25 Linde Aktiengesellschaft Procédé et dispositif de production de gaz sous pression
GB2183023A (en) * 1985-11-13 1987-05-28 Michigan Cons Gas Gaseous fueled torch apparatus and fueling module therefore

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1451464A1 (de) * 1963-05-02 1969-03-13 Manfred Leisenberg Einrichtung zur Befeuerung,insbesondere von keramischen OEfen,mittels Gas
DE1545336A1 (de) * 1965-03-18 1970-01-22 Oemv Ag Verfahren und Einrichtung zum Nutzbarmachen brennbarer Abgase von Raffinerien oder anderen Anlagen
JPS5857098A (ja) * 1981-09-30 1983-04-05 Mitsubishi Heavy Ind Ltd ジエツトエンジンのシ−ジ検出装置
EP0099037A1 (fr) * 1982-07-01 1984-01-25 Linde Aktiengesellschaft Procédé et dispositif de production de gaz sous pression
GB2183023A (en) * 1985-11-13 1987-05-28 Michigan Cons Gas Gaseous fueled torch apparatus and fueling module therefore

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 7, Nr. 145 (M-224)[1290], 24. Juni 1983; & JP-A-58 57 098 (MITSUBISHI) 05-04-1983 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT411927B (de) * 2001-04-20 2004-07-26 Vaillant Gmbh Atmosphärischer brenner

Also Published As

Publication number Publication date
PT92691A (pt) 1990-06-29
DE3843436C2 (fr) 1991-11-21
DE3843436A1 (de) 1990-06-28
EP0381836A3 (fr) 1991-01-23

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