DE102009004622A1 - Steam generator has container for feed water for charging water in steam generator, which stays in connection with steam-condensate-network - Google Patents

Abstract

The steam generator (1) has a container for feed water for charging water in a steam generator, which stays in connection with a steam-condensate-network. An inlet pipe is provided for steam or steam containing condensate in the filling of water in a container (3). A pipeline (2) is provided for extraction of steam in the container for feed water, and a closurable pipeline (4) is provided for steam. An independent claim is also included for a method for generating steam in a steam generator.

Description

The The invention relates to a steam generator with a container for feed water according to the preamble of claim 1.

State of the art

about Steam generator for the use of steam by means of a conversion into Energy in power plants or by a distribution of steam as Process and heating heat, in which over one Steam condensate network the condensate of steam into the steam generator is attributed, is known to be dependent on the state in the steam condensate network as vaporous or liquid medium after use, a generation of steam is associated with certain energy losses, and that condensate and fresh feed water from a container in the Steam generators are abandoned.

Further is from the container with a filling of feed water known to feed water by a heat in the Container is heated and containing in the feed water Gases z. B. Oxygen O2 driven out by the heating become. After rising temperatures a lower solubility of gases, escape at the higher temperatures Amounts of steam from the container for feed water. As is known, these losses are incurred in production of steam in laundries to help make a steam generator associated with a thermal efficiency of 60%.

A further cost burden arises from the fact that with the losses steam also costs for the consumption of desalinated water are connected.

The The invention relates to a use of steam and gaseous Media that belongs in a to a steam generator Feedwater tank to be released.

From the publication DE 197 12 993 A1 has become known an apparatus for heating and degassing of water. In the apparatus according to this document, water for heating and degassing is passed in countercurrent to an ascending vacuum vapor. This degassing is associated with the disadvantage that by operating under vacuum, a vapor released with the degassing is not used. Disadvantage is, a high energy requirement to divert the gases from the vacuum.

Another Disadvantage: electricity is generated in the power plant, but for degassing and heating the water, the power generated is used.

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. The disadvantage is that these media are additionally mixed with propellants of the pump.

disadvantage is that further condensate, propellant, by gaseous Media is contaminated.

adversely is that condensate quantities are loaded with gases. Because this condensate must now be degassed before a task in the steam generator.

One Another disadvantage is z. B. in textile manufacturing, textile cleaning in laundries or in food drying in the Given that when using the steam a treated Dry material is additionally moistened with the propellant. Disadvantage are high costs for energy, caused by the drying of blowing agents.

The above prior art for degasification of feed water in connection with a recovery of waste heat and condensate is associated with the problem that this heat recovery with high uncertainties in terms of the accumulation of condensate and a composition of the condensate is connected. In particular, use of the heat is made more difficult by the condensate being additionally loaded with the gases. Further costs arise from the fact that in addition to the feed water and the condensate is to degas after use of the heat and degasification of this Kon densates primary energy is consumed again.

task The invention is a container for feed water to propose in connection with a steam generator in which Heat content of the gases containing vapors below favorable operating conditions are usable and In these operating conditions, a degassing of feed water is guaranteed Further, these operating conditions be set up so that the heat content at a secure litigation are available and within the structural conditions of the steam generator also later can be installed. Another task is that of energy saved and resources are spared.

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 6, claim 8 and by in the subclaims 2 to 5 and 7 mentioned measures possible.

essential Feature of the invention is accordingly that a Pipe for removing steam in the container for Feedwater is provided and in particular as a closable Line is provided.

Accordingly a steam generator is characterized by the fact that starting from the container for feed water a lockable Pipe for steam is provided and me the degassing a steam is generated and recovered from the feedwater.

essential Advantage consists in the closable line for Steam in itself, that one pipe, the lockable shut-off devices connected to the container for feed water is. About the lockable line is namely possible that generated steam through an opening derived a flap or a valve to a consumer becomes.

advantage is that by opening one for wear existing valves, generated steam on potential consumers can be distributed and dosed.

• (1) ein Dampf mit dem Druck im Kessel erzeugt wird,
• (2) ein weiterer Dampf bei dem Betriebsdruck in dem Behälter für Speisewasser erzeugt wird;
• (3) Gase aus dem Speisewasser mit dem Dampf ausgetrieben werden;
• (4) ein spezieller Dampf für eine Nutzung bei atmosphärischen Bedingungen geliefert wird.

Another advantage is the steam generator itself that now 2 qualities of steam are generated in a steam generator. Advantage is that

• (1) a steam is generated at the pressure in the boiler,
• (2) generating another vapor at the operating pressure in the feedwater tank;
• (3) gases are expelled from the feed water with the steam;
• (4) a special vapor is supplied for use at atmospheric conditions.

Because in the future, a steam before use z. In one Tunnel finisher in a laundry no longer relaxed but can be over from the piping for steam over abandoned an adjustable flap for the treatment of clothing become. Advantage is that this saturated steam is straight is suitable for warming the clothes.

Another The advantage is that by a task of the generated steam a better use of heat in the condensation given; What just excluded in a superheated relaxation steam becomes.

advantage is that about the sealable pipe actually only vapors and gases in the container for feedwater to be derived. It is so that at one dependent on the pressure in the pipeline The task of heat in the form of steam, the generation of steam over regulated by the pressure-dependent heat application becomes. Advantage is, steam is generated and the vapor pressure can over a pressure value can be regulated as a setpoint.

advantage The sealable pipeline is that gases from the feed water via the pipeline together with Steam are derived for use.

One Advantage is also that through the derivation and use the steam allows good heating and degassing becomes. Because after the steam is used, a degassing, which the heat transfer steam in excess used without loss of heat. So far It was true that good degassing with high losses associated with steam and a loss of water, H2O.

Another The advantage is that a release of excess Steam from a condensate return is avoided. advantage is that the cost of installing a capacitor savings of EUR 10 000. It is namely in laundries often so that complaints from neighbors due to release of flash vapor.

advantage is that the steam with less manufacturing and assembly costs as well as for easier assembly work can be generated; there the generated steam only in so-called unpressurized systems as operating equipment is used. The advantage is that in unpressurized systems already Gases and air are included.

A advantageous embodiment of the invention is given by that a closable pipe for steam is provided. Advantageous is the pipeline for steam or a network of steam connected to the pipeline closable. Advantage is that in a lockable Pipeline supplied gas and vapor media and derived via closable openings can be.

A advantageous embodiment of the invention is given by the fact that a shut-off device or shut-off valve for closing the pipeline is provided. It is advantageous with a shut-off device in the version as a valve or flap possible, a pressurized network for vapors to operate. Advantage is that a derivative of excess, gaseous media via opening a Absparreinrichtung is provided.

A advantageous embodiment of the invention results from that a connection of the pipeline to the container above the filling with water, H2O is provided. Through the connection the pipeline above the filling with water can the Pour steam freely into the pipeline. Advantage is one simple construction with low production costs.

A advantageous embodiment of the invention is given by the fact that a pressure-dependent supply of steam or steam is provided with condensate. Here, the amount produced Steam according to the pressure in the pipeline over the Supply of steam regulated. Advantage is a secure function and control when generating the 2 th steam.

A advantageous embodiment of the invention is characterized by a container for feed water given in the way that a pipeline for removing steam in the container for feed water is provided. Advantageously results from the container in connection with the pipeline for steam the possibility in the heating and degassing of the feedwater one To generate steam.

• (1) es wird Dampf erzeugt,
• (2) Gase werden mit dem erzeugten Dampf abgeleitet;
• (3) das Konzentrat des Dampfes (Destillat) ist das Speisewasser des Dampferzeugers;
• (4) Die Beheizung erfolgt mit Abwärme z. B. aus entspanntem Kondensat;
• (5) Die Dampferzeugung verläuft ohne Entsorgungsprodukte, also ohne Verluste durch Absalzung und Abschlämmung.

Advantages of the container for feed water according to the invention are,

• (1) steam is generated
• (2) gases are discharged with the generated vapor;
• (3) the concentrate of the steam (distillate) is the feedwater of the steam generator;
• (4) The heating takes place with waste heat z. B. from relaxed condensate;
• (5) The production of steam proceeds without disposal products, ie without losses due to desalination and drainage.

advantage is, saving energy and saving water.

A advantageous development of the invention Container results from the fact that a closable Pipe is provided for steam. Advantage is that in a sealable tube a vapor under a certain Pressure can be derived.

advantage is that allows the generation of a vapor in the container becomes.

A Further advantageous embodiment of the invention results from a method for producing a steam in a steam generator in the manner that a removal of steam through a closable pipe is provided from the container for feed water.

• (1) eine Dampfqualität in dem Dampferzeuger erzeugt wird, welche als Betriebsmittel für thermische Verfahren unter Atmosphären-Druck geeignet ist;
• (2) dieser Dampf auch mit Abwärme aus einem Kondensatnetz erzeugbar ist;
• (3) eine Erhöhung der Dampfleistung eines Dampferzeugers auf > 125% ermöglicht wird;
• (4) Energie und Wasser, H2O eingespart werden;
• (5) eine Beheizung mit Dampf und Dampf haltigen Kondensat möglich ist;
• (6) für Rohrleitungen und Rohrleitungsnetze zum Transport des Dampfes eine einfache Bauweise ausreicht;
• (7) der Dampf auch mit den Gasen z. B. Sauerstoff O2 nutzbar ist.

Advantages of this method according to the invention are that

• (1) a steam quality is generated in the steam generator, which is suitable as operating means for thermal processes under atmospheric pressure;
• (2) this steam can also be generated with waste heat from a condensate network;
• (3) it is possible to increase the steam output of a steam generator to>125%;
• (4) saving energy and water, H2O;
• (5) heating with steam and steam-containing condensate is possible;
• (6) a simple design is sufficient for pipelines and piping networks to transport the steam;
• (7) the steam also with the gases z. B. oxygen O2 is available.

Another Advantage is that the steam in a steam-heated heat exchanger, can be overheated when installed in the pipeline. As is known, for this overheating commercial heat exchangers available.

embodiment

An embodiment of the invention is illustrated as a drawing and is based on the 1 explained in more detail below.

1 shows a perspective view of a container with a pipe for steam.

In 1 is a steam generator 1 symbolic with a pipeline 2 for steam (H2O) in conjunction with a perspective view of a container 3 for feed water and a pipeline 4 shown for steam, in the present case from a one filling 6 housing containing water (H2O) 5 consists. Next is the container of the invention 3 in connection with a pipeline 7 for degassed feed water, a pipeline 8th for fresh feed water, a pipeline 9 for the discharge of steam (H2O) and steam containing condensate, a pressure measuring point 11 (PC) for measuring and controlling a vapor pressure (English: pressure control), as well as a control valve 10 to give up heat from a steam-side connection to the pipeline 2 for steam, shown.

With a supply of heating heat through the valve 10 or with a relaxed condensate, for degassing the feedwater, a gas in a vapor-containing atmosphere over the filling 6 into the pipeline 4 escape and spread. It is important that in this way a usable vapor in the container 3 is generated for feed water and in connection with the generation of the steam, a good degassing of the water is made possible. This way, in the steam generator 1 produces a second steam quality, in a controllable operating pressure, over that with shut-off devices 12 lockable pipeline 4 derived and used as operating resources. Any conveying devices for liquids which are present in a steam generator are shown in FIG 1 not listed, but will continue to be used when retrofitting.

Advantage is, a steam is generated and at the same time the degassing of the feedwater is improved, waste heat from a condensate network can over the line 9 be used for degassing, without water (H2O) is lost; because the use of steam is not limited by gaseous components and gaseous components in the water limit the generation of steam in the container 3 not a. Example: Steam generator for heating in laundries 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 Return to the container 3 over the pipeline 9 and Relaxation at 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) Nutzung der Wärme außerhalb eines Kesselhauses
• (4) Druck abhängiger Wärmetransport – ohne mechanische Hilfe.

With the closable pipe 4 from the container 3 the following advantages are given:

• (1) Additional steam generation 21%
• (2) energy saving 17.3%
• (3) Use of heat outside a boiler house
• (4) pressure-dependent heat transfer - without mechanical assistance.

Examples for a use of the generated steam and substitution of live steam:

Laundry and textile processing

• - Heating of liquids - Washing and dyeing
• - Task in the mechanical drainage for preheating the textiles;
• - Safe for sterilizing laundry in with vapor saturated atmosphere and acceleration the drying z. As in rubber mats by a task of steam in the dryer;
• - preheating of drying air;
• - Sterilization of laundry carts with steam in a trolley washer;
• - substitution of live steam in the tunnel finisher;
• - with a 20% saving in energy consumption and more.

Production of paper and cardboard

• - preheating the stock preparation;
• Heating of the material task before the order on the heated drying rollers.

Oil mills, soy meal as well as foods

• - Task in the hexane-containing soy Shot to release the hexane;
• Use of the steam for tempering and bluffing, z. Peas, potato / rösti, carrots, beans and fruit (juices).

Power plants and heating plants

• - Steam addition in the coal centrifuges to preheat the coal
• - Preheating damp coal for intensification the drying;
• - Use of steam in coal drying z. B. brown coal
• - Use of steam in district heating and Heating networks.

Cereals and oilseeds

disinfestation of cereals by directly condensation with a subsequent Drying at> 60 ° C before loading on ships or storage.

Autoclave and vulcanization of rubber

use steam to evacuate the autoclave (displace the air) before the task of high-pressure steam.

The advantage is that the steam generated in the boiler via the closable pipe 4 in the appropriate state, pressure, temperature, and gas components can be supplied to the consumer and that there is a good degassing of the feed water (H2O) with the use of the steam; because it applies: "the more steam is generated the better the degassing."

1

steam generator

2

pipeline for steam

3

Container, Feedwater tank

4

pipeline for steam

5

casing

6

filling with water

7

pipeline for feed water

8th

pipeline

9

pipeline

10

Valve

11

Pressure measuring point PC (pressure control)

12

shut-off device, adjustable flap

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

• DE 19712993 A1 [0006]
• - DD 228865 A1 [0008]

Claims (8)

Steam generator with a container for feed water for feeding water into the connected to a steam condensate network steam generator, with a supply line for steam or steam-containing condensate in a filling of water, H2O in the container, characterized in that a Pipe is provided for the removal of steam in the container for feed water. Steam generator according to claim 1, characterized that a closable pipe for steam is provided. Steam generator according to one of the preceding claims, characterized in that a shut-off device or butterfly valve is provided for closing the pipeline Steam generator according to one of the preceding claims, characterized in that a connection of the pipeline to the Container above the filling with water, H2O is provided. Steam generator according to one of the preceding claims, characterized in that a pressure-dependent supply line steam or steam with condensate is provided. Container for feed water after Claim 1, characterized in that a pipe for removal provided by steam in the container for feed water is. Container according to claim 6, characterized that provided a sealable pipe for steam is. Process for generating a steam in a steam generator with a container for feed water according to claim 1, characterized in that a withdrawal of steam through a lockable pipeline from the container for Feedwater is provided.