EP2530257A2 - Installation d'utilisation de la chaleur dégagée - Google Patents

Installation d'utilisation de la chaleur dégagée Download PDF

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Publication number
EP2530257A2
EP2530257A2 EP12169034A EP12169034A EP2530257A2 EP 2530257 A2 EP2530257 A2 EP 2530257A2 EP 12169034 A EP12169034 A EP 12169034A EP 12169034 A EP12169034 A EP 12169034A EP 2530257 A2 EP2530257 A2 EP 2530257A2
Authority
EP
European Patent Office
Prior art keywords
waste heat
recovery system
heat recovery
cylindrical container
heating medium
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Withdrawn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
EP12169034A
Other languages
German (de)
English (en)
Other versions
EP2530257A3 (fr
Inventor
Stefan Müller
Harald Köhler
Konrad Herrmann
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2530257A2 publication Critical patent/EP2530257A2/fr
Publication of EP2530257A3 publication Critical patent/EP2530257A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/26—Steam-separating arrangements
    • F22B37/30—Steam-separating arrangements using impingement against baffle separators

Definitions

  • the invention relates to a waste heat recovery system according to the preamble of claim 1.
  • ORC Organic Rankine Cycle
  • ORC plants for example, in the utilization of biomass in connection with combined heat and power, especially at relatively low power, so if the conventional biomass combustion technology seems relatively expensive.
  • Biomass plants often have a fermenter for biogas production, which usually has to be heated.
  • Combined heat and power plants as plants for combined heat and power are well known. These are decentralized, usually powered by internal combustion engines power generation systems with simultaneous waste heat recovery. The discharged during the combustion of the cooling media heat is used as completely as possible for the heating of suitable objects.
  • the engine manufacturers prescribe a cooling water inlet temperature of only approx. 40 to 50 ° C for the mixture cooling so that the mixture can be sufficiently cooled. Since this temperature level is relatively low, the heat extracted from the fuel gas mixture in the previously known combined heat and power plants is released to the environment, for example with a table cooler.
  • a second heating circuit draws heat from engine cooling water and exhaust gas of the internal combustion engine and is connected to the second heat exchanger after the feed pump, the heat from the cooling circuit and the exhaust gas for overheating and evaporation of the process medium in ORC and coupled as high temperature heat in the second heat exchanger after the feed pump becomes.
  • At least one evaporator is coupled to a downstream droplet separator on the steam side in order to exclude liquid components which are detrimental to the operation of an expansion machine in the working medium.
  • Known mist eliminators consist essentially of a horizontally arranged cylindrical container, which encloses a separating chamber, which has in its lower region at least one steam inlet connection piece connected to the evaporator and in its upper region at least one steam outlet nozzle,
  • the invention is therefore based on the object to improve the operation of a waste heat recovery system, consisting essentially of a waste heat source downstream ORC, by an optimized mist eliminator.
  • the waste heat recovery system is characterized in that the mist eliminator can be heated from outside via the wall of the cylindrical container.
  • the droplet separator around the wall of the cylindrical container around a double jacket, so that thus a ring-cylindrical space for a heating medium for heating the cylindrical container is formed from the outside.
  • This annular cylindrical space for a heating medium is flowed through directly in a first embodiment of this between an inlet and an outlet nozzle.
  • the two serving as a supply and return connection nozzle are preferably arranged on opposite sides.
  • the annular cylindrical space for a heating medium on a consisting of at least one spiral tube, flowing through the heating medium heat exchanger.
  • the tube winding preferably surrounds the cylindrical inner container at a distance and extends over a large part of the annular cylindrical space. An extension over the total length is advantageous for uniform heat input.
  • the ring-cylindrical space for a heating medium has a tube bundle heat exchanger through which the heating medium flows, with a plurality of individual tubes which are flowed through in the longitudinal direction and are circularly distributed.
  • the individual tubes open on both end sides of the annular cylindrical space in each case into a collection chamber for inlet and outlet.
  • the second and third embodiment thus allow two different heating media or heating circuits, namely on the one hand within the annular space and on the other hand within the pipe arrangements penetrating this. If the annular space itself is not flowed through, the liquid medium in the interior essentially serves to increase the thermal inertia and overall to equalize the temperature during the heat transfer between the heat-introducing tube arrangement and the inner cylindrical container.
  • a baffle plate is arranged in the separation chamber of the droplet separator within the cylindrical container, which is fixed parallel to the longitudinal axis, at or below the plane of the longitudinal axis and preferably at a small distance from the wall of the cylindrical container. This wall distance allows the flow around with steam on the one hand, but also the drainage of already deposited droplets on the wall.
  • the baffle plate is fixed to a plurality of horizontal transverse webs, which are fastened to the wall of the cylindrical container. With the baffle plate not only a direct flow between the steam inlet nozzle and steam outlet nozzle is prevented, but it is also the effective Abscheide Design extended.
  • the at least one steam outlet nozzle in the upper region projects into the separation chamber and has at its Projection into the separation chamber a conical expansion at the free end.
  • a flange is provided with an integrated sight glass in order to make a simple function check or inspection of the droplet can. This check is necessary to ensure that there is complete absence of drips in the steam cycle. Only then can the steam be directed into the expansion machine.
  • Waste heat sources can be, for example, combined heat and power plants, industrial plants or boiler plants.
  • the steam can be conducted into the expansion machine, the higher its degree of utilization and thus also economic efficiency. Especially in the start-up phase it takes some time until the evaporator has reached the normal operating state and almost completely drip-free steam is present in the supply line to the associated expansion machine.
  • the essential components for the ORC are an ORC circuit 1, a feed pump 2, an evaporator 3, a steam expansion expansion machine 4, which is coupled to a generator 5, a condenser 6 for re-cooling via a heat sink 7 and the heat exchangers 8, 9 for preheating the working medium in the ORC circuit 1.
  • the two heat exchangers 8, 9 are connected downstream of the feed pump 2 in series.
  • the first heat exchanger 8 after the feed pump 2 serves as a first stage for coupling low-temperature heat and the subsequent heat exchanger 9 as a second stage for coupling high-temperature heat from a waste heat source 10th
  • a second heating circuit 11 is connected with its flow area with the evaporator 3 of the ORC, because the temperature level is initially sufficiently high for its direct heating. Thereafter, the second heating circuit 11 opens the return side in the second heat exchanger 9 and there are still residual heat from the ORC.
  • the evaporator 3 is coupled to a downstream droplet separator 12, which essentially consists of a horizontally arranged cylindrical container 13, which encloses a separation chamber 14, which has in its lower region three steam inlet connection 15 as connection to the evaporator 3 and in its upper region a steam outlet connection 16 having.
  • a downstream droplet separator 12 essentially consists of a horizontally arranged cylindrical container 13, which encloses a separation chamber 14, which has in its lower region three steam inlet connection 15 as connection to the evaporator 3 and in its upper region a steam outlet connection 16 having.
  • the droplet separator 12 is heated via the wall of the cylindrical container 13 from the outside.
  • the droplet separator 12 has a double jacket, so that a ring-cylindrical space 17 for a heating medium for heating the cylindrical container 13 is formed.
  • the annular cylindrical space 17 is flowed through by the heating medium directly between an inlet and an outlet connection 18, 19.
  • baffle plate 20 which extends parallel to the longitudinal axis, on or below the plane of the longitudinal axis and over all the steam inlet nozzle 15 away. It is fixed at a distance from the wall of the cylindrical container 13 at a plurality of horizontal transverse webs 21 at this.
  • the protruding into the separation chamber 14 in the steam outlet nozzle 16 has at its projection in the separation chamber a conical expansion 22 at the free end.
  • a flange with a sight glass 23 is attached.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Drying Of Solid Materials (AREA)
EP12169034.1A 2011-05-30 2012-05-23 Installation d'utilisation de la chaleur dégagée Withdrawn EP2530257A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011102803.3A DE102011102803B4 (de) 2011-05-30 2011-05-30 Abwärmenutzungsanlage

Publications (2)

Publication Number Publication Date
EP2530257A2 true EP2530257A2 (fr) 2012-12-05
EP2530257A3 EP2530257A3 (fr) 2017-12-20

Family

ID=46168221

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12169034.1A Withdrawn EP2530257A3 (fr) 2011-05-30 2012-05-23 Installation d'utilisation de la chaleur dégagée

Country Status (2)

Country Link
EP (1) EP2530257A3 (fr)
DE (1) DE102011102803B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3366974A1 (fr) * 2017-02-27 2018-08-29 Strahman Valves, Inc. Séparateur de vapeur diffus direct - système de purgeur de vapeur

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4334409A (en) 1979-02-22 1982-06-15 Societe D'etudes De Machines Thermiques S.E.M.T. Device for recovering heat energy in a supercharged internal-combustion engine
US4901531A (en) 1988-01-29 1990-02-20 Cummins Engine Company, Inc. Rankine-diesel integrated system
DE19541521A1 (de) 1995-11-08 1997-07-31 Schmeink & Cofreth En Manageme Steigerung des elektrischen Wirkungsgrades bei der Verstromung von Sondergasen
DE102005048795B3 (de) 2005-10-12 2006-12-28 Köhler & Ziegler Anlagentechnik GmbH Kraft-Wärme-Kopplungsanlage

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6812147A (fr) * 1967-09-06 1969-03-10
DE3372035D1 (en) * 1983-06-13 1987-07-16 Babcock & Wilcox Co Nuclear power plant and apparatus for superheating steam
FR2579299B1 (fr) * 1985-03-22 1987-05-07 Stein Industrie Disp
US4617808A (en) * 1985-12-13 1986-10-21 Edwards Thomas C Oil separation system using superheat
JP4493531B2 (ja) * 2005-03-25 2010-06-30 株式会社デンソー 膨張機付き流体ポンプおよびそれを用いたランキンサイクル
GB0511864D0 (en) * 2005-06-10 2005-07-20 Univ City Expander lubrication in vapour power systems
US8181463B2 (en) * 2005-10-31 2012-05-22 Ormat Technologies Inc. Direct heating organic Rankine cycle
DE202007002602U1 (de) * 2007-02-22 2007-06-14 Eckert, Frank ORC-System für Verbrennungsmotoren

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4334409A (en) 1979-02-22 1982-06-15 Societe D'etudes De Machines Thermiques S.E.M.T. Device for recovering heat energy in a supercharged internal-combustion engine
US4901531A (en) 1988-01-29 1990-02-20 Cummins Engine Company, Inc. Rankine-diesel integrated system
DE19541521A1 (de) 1995-11-08 1997-07-31 Schmeink & Cofreth En Manageme Steigerung des elektrischen Wirkungsgrades bei der Verstromung von Sondergasen
DE102005048795B3 (de) 2005-10-12 2006-12-28 Köhler & Ziegler Anlagentechnik GmbH Kraft-Wärme-Kopplungsanlage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3366974A1 (fr) * 2017-02-27 2018-08-29 Strahman Valves, Inc. Séparateur de vapeur diffus direct - système de purgeur de vapeur
US10550999B2 (en) 2017-02-27 2020-02-04 Strahman Valves, Inc. Direct diffuse vapor separator—steam trap system

Also Published As

Publication number Publication date
EP2530257A3 (fr) 2017-12-20
DE102011102803B4 (de) 2014-10-23
DE102011102803A1 (de) 2012-12-06

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