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Integrated air-separating and water-heating apparatus intended for a boiler

A technology for air separation and integrated equipment, applied in lighting and heating equipment, components of pumping devices for elastic fluids, mechanical equipment, etc., can solve problems such as large boiler water flow

Inactive Publication Date: 2011-10-05
LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] On the second hand, the water flow for the boiler may be too large compared to air for optimal effective heat exchange

Method used

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  • Integrated air-separating and water-heating apparatus intended for a boiler
  • Integrated air-separating and water-heating apparatus intended for a boiler
  • Integrated air-separating and water-heating apparatus intended for a boiler

Examples

Experimental program
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Effect test

Embodiment Construction

[0036] figure 1 , water 27 was extracted from condenser 23 at 45° C. and pumped by pump 25 to 15 bar. The pumped water is heated by indirect exchange in the first exchanger 29 to a first temperature of at least 100°C, preferably at least 130°C, possibly at least 150°C or even at least 170°C, for example In the present case it is 175°C. In this first exchanger, the water recovers heat from the air 35 from the air compressor 31 . The compressor may be adiabatic or may have cooling between stages. The hot water is sent to a degasser 3 which receives steam 5 at 14 bar from the boiler 1 . Thus, water is heated from its first temperature to 196°C and dissolved oxygen is removed by stripping. Water 7 at 196° C. is pumped to 150 bar by pump 9 producing stream 11 which is sent to second exchanger 13 where it is heated with air 33 from air compressor 31 exchange. After passing through these two exchangers, the air 37 is sent to Figure 4 The air separation plant shown in.

[003...

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PUM

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Abstract

The invention relates to an integrated apparatus including an air compressor (31) driven by a steam turbine (17), a first heat exchanger (29), means for feeding water into the first heat exchanger and from there into a boiler (1), means for feeding compressed air from the compressor into the first heat exchanger, and an air-separating device (49) supplied with air compressed in the compressor, heating means (3) for heating the water downstream from the first exchanger, a second exchanger (13), means for feeding water from the first exchanger into the heating means, from the heating means into the second exchanger, and from the second exchanger into the boiler, and means for feeding air into the second exchanger upstream from the first exchanger, without preheating between the compressor and the second exchanger.

Description

technical field [0001] The invention relates to an air separation and water heating integrated equipment for boilers. Background technique [0002] US-A-4461154 discloses the use of an adiabatic compressor for compressing air and recovering the heat generated at the outlet of the compressor to heat water which is supplied to a boiler for the purpose of Improvement of the overall efficiency of the air separation plant and the boiler to which the compressed air is fed (in order to reduce the fuel consumption of the boiler). [0003] WO-A-2006 / 131283 describes a device in which air from a compressor is heated by flue gas and subsequently used to heat water in two separate exchangers. [0004] DE-C-19837251 describes an air separation plant with integrated gas turbine. [0005] Conventionally, steam is extracted from the turbine and then used to preheat water for the boiler. [0006] The present invention enables optimization of heat recovery from the air compressor by prehea...

Claims

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Application Information

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IPC IPC(8): F01K27/02F25J3/04F04D25/02F22B1/18
CPCF25J2205/70F25J2230/06F25J3/04181F25J3/04018F01K13/00F25J2230/04F25J3/04824F25J3/04121F04D29/5826F25J2240/70F25J3/04618F25J3/04157F25J3/04F01K27/02F04D25/02F22B1/18
Inventor R·杜贝蒂尔-格勒尼耶J·特拉尼耶S·格利
Owner LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE