DE102008062558A1 - Evaporation line for introducing steam and gaseous media into e.g. washing machines, supplies feed water to steam boiler, where closed piping is provided for inlet of steam and gaseous media at working process machines - Google Patents

Abstract

The line (4) supplies feed water to a steam boiler and forms a connection between the steam boiler and a steam condensate network, where heat is introduced into working process machines by the steam condensate network. A closed piping is provided for inlet of steam and gaseous media (5) at the working process machines, where connection of the piping is provided to a network for distribution of steam. The network discharges the surplus gaseous media, and pipes are provided with plug connections for forming the piping. An independent claim is also included for a method for heat production with an evaporation line attached to a condensate container.

Description

The The invention relates to a vapor line according to the preamble of Claim 1.

State of the art

about Steam condensate networks for distribution of steam from a steam generator coming process heat, which via the steam network individual machines of a thermal work process as equipment is fed, it is known that the steam boiler of a Condensate tank fed with fresh feed water is and refluxing condensate from the network together with the feed water from the condensate tank is refilled from the boiler.

It is also known that gases z. As carbon dioxide CO ₂ , nitrogen N ₂ and oxygen are O ₂ in fresh feed water in solution and expelled by mixing with hot condensate and discharged together with vapors through an opening and a vapor line. For the discharge of these gases in the condensate tank leading to the outside evaporation line is established. It is important that dissolved gases are separated from the boiler feed water. At the same time losses of heat and water, H ₂ O caused by the relaxation of condensate.

The Invention deals with a use of heat, that of a condensate tank via the evaporation line get lost.

An arrangement for the recovery of heat and condensate from steam, feedwater and condensate losses, which are passed in steam power plants with closed water-steam cycle in an open condensate tank, is from the document DD 228 865 A1 known. In this arrangement, a jet pump for discharging gaseous media is connected to a Ausdampfleitung of the open condensate tank via another pipe. The disadvantage is that only parts of the gaseous media are recovered via the jet pump. Disadvantage is that these media are also mixed with propellants of the pump and use of heat is difficult.

One Another disadvantage is also in a connection of a heat exchanger over a supply line from the exhaust steam line in such a way given that the heat is generated at a lower level. disadvantage is that due to the temperature gradient in the heat exchanger a use of waste heat is difficult.

Another Disadvantage is given with the evaporation line in such a way that it has 2 openings, one to a customer of heat and another into the open. Downside is that over an opening from the outside air can flow and that from the Condensate container resulting mixture diluted in air becomes. It has been shown that a vapor, the diluted with air, less to use the heat of condensation or is not suitable because the enthalpy of the mixture and the Wet bulb temperature in the mixture of gases and vapors is lowered by inflowing air. The extraction of Condensation heat is not possible, if a work process already has the temperature in the supplied media as wet bulb temperature available is.

disadvantage is the insecurity caused by the opening to the outside in the exhaust pipe with respect to the beginning of the condensation with a cooling and the temperature value with condensation given is. Disadvantage is a limitation regarding the uses of waste heat in different thermal Processes and in working machines of these processes.

disadvantage is also the uncertainty about the state of mixtures. It can in fact be in a saturated steam with an admixture from cold air a loss of condensate result. Disadvantage is for the use of this steam for direct product treatment, that in a tunnel finisher in laundries or in a Apparatus for natural products, peas, hash browns, soya flour the dry material is additionally moistened by dripping. Disadvantage is a higher consumption of energy.

Another Disadvantage is that the waste heat with blowing agents of a jet pump is mixed and these propellants after a use of heat are lost.

disadvantage is given by the scheme, without which a derivative of the waste heat not possible. Disadvantage is the cost and a complex Function to use the waste heat.

Of the above prior art for the recovery of waste heat and of condensate is associated with the problem that this heat recovery with high uncertainties with regard to the accumulation of condensate and the release of heat in terms of temperature and the recovery of condensation heat is connected. In particular, there is uncertainty about a composition given by sucked gaseous media in that the media contain air and condensation only on cooling to lower temperatures.

task The invention is evaporation pipes of condensate tanks for steam and gaseous media, at which heat contents of the steam and gaseous Media can be used under favorable operating conditions are and these favorable operating conditions be set up so that the heat content in undiluted Condition of the media near the boiling point of condensate available are and these media use the heat in a network abandoned by pipelines. Next are these evaporation pipes within the structural conditions of steam generators and on machines of thermal working methods, including by subsequent Installation, can be erected. Another task is that saves energy and conserves resources.

The Task is starting from a prior art of the introductory mentioned type by the characterizing features of claim 1 solved.

advantageous Embodiments and developments of the invention are after to claim 7 and by in the subclaims 2 to 6 and 8 measures possible.

essential Feature of the invention is accordingly that a closed pipeline for the discharge of steam and gaseous Media is provided as evaporation, in particular also for a supply of steam and gaseous Media to machines of a working procedure is provided.

Accordingly a steam discharge line is visible from a condensate tank characterized in that for the derivation of vapor and gaseous Media is provided a closed pipe.

essential Advantage consists in the evaporation line itself, that at the Condensate tank connected pipe closed is and on the closed pipe usable heat is first removed and then the heat is derived from a steam network.

advantage is that by closing the exhaust pipe actually only vapors and gases in the condensate tank arise, be derived. It is true that in a closed pipe, which is in the condensate tank be displaced accumulating gaseous media. In the formation of gases, the pressure increases and gaseous Media are displaced over the closed pipeline. advantage is that facilities for promoting z. B. a Saugstrahlgebläse omitted.

advantage the closed pipe is that entry of air and prevents dilution of the vapors by air become.

advantage is, less manufacturing and assembly work and simpler assembly work.

One Another advantage is the function of the closed Ausdämpfleitung given. It has been shown that when starting up the steam generator with a free space in the condensate tank with Air is filled and that in the course of a heating process outgas dissolved in water. That's why it's important that these gaseous components in operation by flash vapor be displaced. Advantage is a derivative of gaseous Media and a safe reproducible setting desired Operating conditions by means of the closed pipeline. advantage is, a low personnel expenditure, because a use of the heat is not due to an accumulation of gases in heat exchangers restricted and gases are displaced and with derived from the resulting vapor. The usual ventilation work on heat exchangers and heat transfer systems are saved.

A advantageous development of the invention closed Evaporating pipe is given by the fact that the pipeline for a supply of steam and gaseous media to machines a working procedure is provided. Advantage is that the accruing Waste heat is led to heated machines and by using the waste heat primary energy is saved.

Advantage is a better suitability of the saturated steam for a direct heating of dry material and Na turprodukten. It is true that a flash steam from a 10 bar net is overheated and leads to wet surfaces for drying. In the treatment of laundry or a production of rösti but moistening by condensation is desired. The advantage is a lower steam consumption as well as the saving of energy and condensate.

A advantageous embodiment of the invention is given by that one connection of the pipeline to one for the distribution of steam existing network is provided. Advantage is that the waste heat is placed in a network from which individual machines or several machines are fed. The advantage is that a heat consumer available for the use of previously lost waste heat is.

A advantageous embodiment of the invention is given by the fact that a derivative of excess, gaseous Media over the existing network is provided. Thereby is it possible for a temporary surplus Heat that can occur in a steam-condensate network over the existing network is disposed of. Advantage is that costs are saved become. It is often the case that in laundries at a too little decrease of steam investment for disposal of flash steam necessary.

A advantageous embodiment of the invention results from the execution the exhaust pipe in such a way that pipes with connectors are provided for the formation of the pipeline. When used There are advantages to ventilation systems through a good function, easy installation, good availability as well as the saving of costs.

advantage is, pipes are plugged together, sealed with tape and on with commercially available fasteners z. B. hung on the ceiling.

advantage is the low weight of the exhaust pipe and the distribution of generated heat as a pressureless steam over a suitable for this heat transfer network of pipes.

A advantageous development of the invention is with the installation of a Heating level in the pipeline given in such a way that steam and gaseous media are overheated in the heating stage. The advantage is an avoidance of condensation and a reduction the failure of condensate in the evaporation line.

One advantageous method of heat generation is with a Development of the invention given by the fact that a closed Pipe as evaporation line for the discharge of vapor and gaseous media is provided. This vaporous and gaseous media over derived the closed pipe. Advantage is that the procedure and the use of waste heat apparatus technology and heat technology can be planned. So it is possible in a laundry, the waste heat from the condensate tank for heating of washing liquor. The advantage is the saving of primary energy and a reduction of condensate losses.

An advantageous development of the invention is given by a supply of steam and gaseous media to machines a working method on the pipeline. In this case, it is possible to give up and use this waste heat in a heating stage on a trolley washer or on a tunnel finisher as gaseous media. Advantages are, good function, high thermal efficiency, saving of primary steam and relieving the environment. Namely, less total vapor, H ₂ O released.

embodiment

embodiments The invention are illustrated as a drawing and are based on the Figures explained in more detail below. In detail demonstrate,

1 a perspective view of a vapor line,

2 an evaporation line with heat generation and heat distribution on laundry machines.

In 1 is a perspective view of a condensate container 1 shown in the present case of a housing 2 , a filling with condensate 3 and a vaporization line according to the invention 4 acting as a closed pipe from the condensate tank 1 gaseous and vaporous media 5 can derive. It is important that in the case 2 a filling 3 with a free space above it 6 is present from which excess media via the executed as a closed pipe exhaust pipe 4 derived and preferably a thermal process through a wall duct for the use of heat be forwarded.

Next are a line 8th for cold feed water, one pipe 9 with a valve 10 for condensate and a pipe 11 with a pump 12 for the removal and abandonment of boiler feed water in a steam generator, not shown in 1 shown.

It is important that by heating the feed water from the line 8th and the supply of condensate through the pipeline 9 and the valve 10 vaporize the gaseous media from a vapor condensate network, thereby increasing the pressures in the housing 2 effect, and to a derivative of the vapor and gaseous media 5 over the closed to the outside evaporation line 4 to lead; caused by a pressure gradient from the housing 2 to the exhaust pipe 4 , Example of a derivative of additional heat: Operating pressure in the steam condensate network 14 bar temperature 194 ° C condensation heat 468 kcal per Heat content of the condensate 197 kcal / kg For relaxation of the condensate tank to 1 bar / 100 ° C: usable enthalpy difference 99 kcal per kg Share of waste heat (99/468 × 100) 21% Savings on waste heat recovery: 21% of 121% (21/121 × 100) 17.3%

• (1) Zusätzliche Dampferzeugung 21%
• (2) Einsparung an Energie 17,3%
• (3) Vermeidung von Belästigungen durch Emissionen an Dampf
• (4) Wärmetransport ohne mechanische Hilfe.

With the evaporation line according to the invention the following advantages are given:

• (1) Additional steam generation 21%
• (2) energy saving 17.3%
• (3) Prevention of nuisance due to emissions of steam
• (4) Heat transfer without mechanical assistance.

Further advantages of the invention are in connection with the description of 2 shown:
In accordance with in 1 The reference numeral used is a condensate tank 1 in a housing 2 with a filling of condensate 3 and a space for steam and gaseous media with a vapor line 14 according to 2 with a heating level 7 and a continuation of the evaporation line 14 shown as supply of steam and gaseous media to machines of a working method.

This heating level 7 can be designed as a steam, indirectly heated heat exchanger to overheat steam and gaseous media.

At the in 2 shown machines are heatable thermal machines of a laundry, which generally by a wall 13 be heated separately from a steam generator, not shown. Starting from the evaporation line 14 The gaseous and vaporous media can run on multiple pipelines 15 which are parts of a network, to be split. About these pipelines 15 is a washing machine 16 with a container 17 for fresh water and a container 18 connected for mixed water as a customer of vapor heat. Other steam heated customers in a laundry are called mechanical drainage 19 , as a dryer 20 and as a tunnel finisher 21 with a preferred task of steam in one on the tunnel finisher 21 arranged steam generator 22 ,

According to the invention, the heat generated for heating the washing machine 16 be used. The exhaust pipe is with a valve 23 executed, which is intended to limit a maximum pressure. Further advantages arise when the heat generated in a working according to the principle of the fluidized bed steam generator 22 is fed. In this steam generator 22 the heat recovered from waste heat is modified as a certain saturated steam, with which the laundry parts are moistened before heating, heated and smoothed. Advantage is, it is saved live steam.

Another advantage is that heat introduced via pipelines, which by plug connections, according to the detail 31 , is constructed.

Another advantage arises in a steam application in the dryer 20 , Excess steam in a laundry can be used to increase the steam content of convective drying. Advantage is that laundry is heated faster according to a higher dew point, less energy is consumed and a possible excess of steam with the exhaust air of the convective drying is derived.

On the side of the steam extraction is another condensate tank 24 with a line 25 as a connection to the evaporation line 14 , with a steam trap 26 and a task valve 27 in a pipe 28 for condensate from a steam condensate network 29 represented. This condensate tank 24 can be retrofitted to produce steam in a boiler house. The advantage of this additional container is that more heat is stored in a larger amount of condensate for possible use. This can be excess condensate through a pipe 30 in the condensate tank 1 be directed. With a wall 13 is indicated that a generation of heat and the dissipation and distribution of heat can take place in different rooms, which then through the exhaust steam line 14 connected to each other.

• (1) Einfacher technischer Aufbau durch die geschlossene Rohrleitung;
• (2) Erzeugung von Wärme, Verteilung und Bereitstellung von Wärme durch die geschlossen Rohrleitung;
• (3) Erhöhte Wärmeleistung eines Dampfkessels und Einsparung von Energie;
• (4) Entlastung der Umwelt durch eine geschlossene Rohrleitung.

With the representation according to 2 The following advantages are given in the heat generation and distribution of heat:

• (1) Simple technical construction through the closed pipeline;
• (2) generation of heat, distribution and provision of heat through the closed pipeline;
• (3) Increased heat output of a boiler and saving energy;
• (4) Relief of the environment through a closed pipeline.

• (5) Speicherung von Wärme in Kondensat,
• (6) gute Nutzung der Wärme durch die netzartige Verteilung der Wärme an mehrere Abnehmer von Wärme,
• (7) Bereitstellung der Wärme in Form von Sattdampf.

Further advantages are shown in a heat utilization in laundry machines,

• (5) storage of heat in condensate,
• (6) good use of heat through the net-like distribution of heat to several customers of heat,
• (7) Providing the heat in the form of saturated steam.

1

container for condensate

2

casing

3

Condensate, -Filling

4

Ausdampfleitung

5

gas / vapor media

6

free space

7

heat setting, heat exchangers

8th

pipeline

9

pipeline

10

Valve

11

pipeline

12

pump Steam Traps

13

Wall, partition wall

14

Ausdampfleitung

15

pipeline

16

Washing machine

17

container

18

container

19

Drainage, mechanically

20

dryer

21

Tunnel finisher, dryer

22

steam generator

23

Valve

24

container for condensate

25

pipeline

26

Steam Traps

27

Valve

28

pipeline

29

Steam condensate network

30

pipeline

31

Detail, connector

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DD 228865 A1 [0005]

Claims (8)

Evaporating pipe for steam and gaseous media ( 5 ) from a condensate container ( 1 ), from which a steam boiler feed water is supplied and which forms a compound of the steam boiler with a steam condensate network, from which process heat is brought to machines of a working method, for. B. on washing machines ( 16 ), Drainage machines ( 19 ), Dryer ( 20 ), Tunnel Finisher ( 22 ), Trolley and ironing stations in laundries or at washing and blanching and drying facilities z. As for natural products, foods, fruits, vegetables and oilseeds, characterized in that a closed pipe for the discharge of vapor and gaseous media ( 5 ) as evaporation line ( 4 . 14 . 15 ), is provided. Exhaust pipe according to claim 1, characterized in that the pipeline ( 4 . 14 . 15 ) for a supply of vapor and gaseous media ( 5 ) is provided on machines of a working method, Exhaust pipe according to one of the preceding claims, characterized in that a connection of the pipeline ( 4 . 14 . 15 ) is provided to an existing network for the distribution of steam. Exhaust pipe according to one of the preceding claims, characterized in that a discharge of excess, gaseous media via the network ( 4 . 14 . 15 ) is provided. Exhaust pipe according to one of the preceding claims, characterized in that pipes with plug connections ( 31 ) for the formation of the pipeline ( 4 . 14 . 15 ) are provided. Exhaust pipe according to one of the preceding claims, characterized in that a heating stage ( 7 ) in the pipeline ( 4 . 14 . 15 ) is provided. Method for generating heat with a condensate container ( 1 ) connected to the exhaust steam line ( 4 . 14 . 15 ) according to claim 1, characterized in that a closed pipe as evaporation pipe ( 4 . 14 . 15 ) for vapor and gaseous media ( 5 ) is provided for the dissipation of heat. Method according to one of the preceding claims, characterized in that a heat supply to machines of a working method ( 16 . 19 . 20 . 22 ) over the pipeline ( 4 . 14 . 15 ) is provided.