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Continuous evaporator

An evaporator and generator technology, applied in the direction of steam generation, steam generation method, forced-flow steam boiler, etc., can solve the problems of ineffectiveness and inapplicability of technology, and achieve the effect of saving structure and cost

Inactive Publication Date: 2012-07-11
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these measures are either ineffective or not technically applicable in horizontal waste heat steam generators

Method used

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  • Continuous evaporator
  • Continuous evaporator

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Embodiment Construction

[0019] figure 1 The illustrated once-through steam generator 1 for the waste heat steam generator 2 is connected downstream of a gas turbine, not shown in detail, in the flow direction of the exhaust gas. The waste heat steam generator 2 has an enclosing wall 3 which forms a hot gas channel 5 through which the exhaust gas from the gas turbine can flow in an essentially horizontal hot gas direction indicated by the arrow 4 . A plurality of evaporation heating surfaces 8 , 10 designed according to the direct flow principle are arranged in the hot gas channel 5 . exist figure 1 In the exemplary embodiment shown two evaporative heating surfaces 8 , 10 respectively, a larger number of evaporative heating surfaces can also be provided.

[0020] figure 1 The illustrated evaporator heating surfaces 8 , 10 each comprise a plurality of tube rows 11 or 12 in the form of tube bundles arranged one behind the other in the direction of the hot gas. Each tube row 11 , 12 in turn comprises...

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Abstract

The invention relates to a continuous evaporator (1) for a horizontally constructed waste heat steam generator (2), which comprises a first evaporator heating surface (8) having a plurality of essentially vertically arranged first steam generator tubes (13) through which a flow medium can flow from bottom to top, and a second evaporator heating surface (10) which is mounted downstream of the first evaporator heating surface (8) on the flow medium side. Said second evaporator heating surface comprises a plurality of additional essentially vertically arranged second steam generator tubes (14) through which a flow medium can flow from bottom to top. The aim of the invention is to produce a continuous evaporator which is simple to construct and which has a particularly high degree of operational safety.; As a result, the first steam generator tubes (13) are designed in such a manner that the average mass flow density which can be controlled in the full load operation does not fall below a predetermined minimum mass flow density in the first steam generator tubes (13).

Description

technical field [0001] The invention relates to a once-through evaporator for a horizontal waste heat steam generator with a first steam generating tube comprising a plurality of substantially vertically arranged first steam generating tubes flowing from bottom to top. An evaporative heating surface and a further second evaporative heating surface connected downstream of the first evaporative heating surface with respect to the flow medium, the second evaporative heating surface comprising a plurality of other, substantially vertically arranged, flowed from bottom to top The second steam generation tube. Background technique [0002] In gas and steam turbine plants, the heat contained in the expanding working fluid or hot gas from the gas turbine is used to generate steam for the steam turbine. The heat transfer takes place in a waste heat steam generator connected downstream of the gas turbine, in which a plurality of heating surfaces are generally arranged for preheating ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B1/18
CPCY02E20/16F22B29/062F22B1/1815F01K23/10F22B1/18F22D7/00
Inventor J.布鲁克纳J.弗兰克G.施伦德
Owner SIEMENS AG