Claims
- 1. Apparatus for generating superheated process steam from raw water containing salt, using preheaters for heating comprising
- (a) preheaters to impart sufficient heat to raw water containing salt flowing therethrough under pressure to permit subsequent evaporation of said water,
- (b) a decompression chamber for collecting a body of unevaporated water and salt above which is a vapor space containing steam, said decompression chamber being free of cooling means to condense the steam therein and at a lower pressure than the raw water containing salt flowing through the preheaters to promote evaporation of water from the raw water
- (c) said decompression chamber connected to said last preheater in the flow direction of the raw water flowing through the preheaters,
- (d) a control interposed in the flow of raw water between said last preheater and said decompression chamber to regulate the flow of raw water to the decompression chamber, said water partially evaporating with the unevaporated water and salt collecting as said body in the decompression chamber and the evaporated water collecting in said vapor space above said body,
- (e) a compressor with its suction side connected to the vapor space of the decompression chamber for withdrawal of steam therefrom and compression and heating of the withdrawn steam to produce superheated steam,
- (f) a gas turbine coupled to the steam compressor,
- (g) conduit means to flow hot exhaust gases from said gas turbine to said preheaters, the heat of the hot exhaust gases heating the raw water in the preheaters,
- (h) a generator also coupled to said gas turbine for generating electricity,
- (i) a blow-down line connected to the decompression chamber for passage therefrom of the unvaporized raw water containing salt, and
- (j) a heat exchanger inserted into the blow-down line for preheating the flowing stream of raw water before the raw water is further heated by said hot exhaust gases.
- 2. Apparatus according to claim 1, wherein the preheaters are provided with burners to which fuel and air are fed to generate hot combustion gases which heat the preheaters.
- 3. Apparatus according to claim 1, wherein a transport line for transporting the superheated steam is connected from the steam compressor to an injection cooler at the site of use of the steam for generating saturated steam.
- 4. Apparatus according to claim 1, wherein condensers are connected to the blow-down line which conducts the heated unvaporized raw water into and out of said condensers cooled by raw water passing through cooling tubes with stepwise reduced pressure to effect evaporation of part of the unvaporized raw water and condensation of such vapor, and wherein the condensers have collecting tanks for the condensate forming at the cooling tubes.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3020297 |
May 1980 |
DEX |
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Parent Case Info
This application is a continuation of application Ser. No. 265,627 filed May 20, 1981.
US Referenced Citations (4)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2243380 |
Mar 1974 |
DEX |
Non-Patent Literature Citations (1)
Entry |
German Article "Zwangumlaufkessel Bauart Conte" from the Magazine Die Warme, Berlin, Dec. 4, 1937. |
Continuations (1)
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Number |
Date |
Country |
Parent |
265627 |
May 1981 |
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