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Plant and operation method therefor

A complete set of equipment and medium technology, applied in the direction of mechanical equipment, machines/engines, steam engine devices, etc., can solve the problem that the temperature cannot be cooled by the cooling medium

Active Publication Date: 2018-11-23
MITSUBISHI POWER LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In the technique described in the above-mentioned Patent Document 1, although the heat of the medium to be cooled can be effectively used for heating the water supply, there is a problem that the medium to be cooled may not be sufficiently cooled.

Method used

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  • Plant and operation method therefor
  • Plant and operation method therefor
  • Plant and operation method therefor

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Experimental program
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Effect test

no. 1 approach

[0059] refer to figure 1 and figure 2 , the first embodiment of the plant according to the present invention will be described.

[0060] Such as figure 1 As shown, the plant of this embodiment includes: a gas turbine 10; a generator 29 that generates electricity by driving the gas turbine 10; a waste heat recovery boiler 30; a steam turbine 40 driven by steam from the waste heat recovery boiler 30; A generator 49 that generates electricity by driving; a condenser (water supply source) 41 that returns steam discharged from the steam turbine 40 to water; and a water supply pump 42 that sends water in the condenser 41 to the waste heat recovery boiler 30. The complete set of equipment also has multiple coolers 50, 60s, 60g, 70s, 70g, 80 (refer to figure 2 ). The waste heat recovery boiler 30 generates steam by heating water with the heat of the exhaust gas EG discharged from the gas turbine 10 .

[0061] The gas turbine 10 includes: a compressor 11 that compresses air A; a...

no. 3 approach

[0175] refer to Figure 15 , the third embodiment of the plant according to the present invention will be described.

[0176] The plant of this embodiment is a modified example of the plant of the second embodiment. In the main water supply line 45 of the plant of this embodiment, the generator cooler 60s of the generator 49 connected to the steam turbine, the generator cooler 60g of the generator 29 connected to the gas turbine, and the lubricating oil cooler of the steam turbine are provided. 70s, the lubricating oil cooler 70g of the gas turbine and the compressed air cooler 80 of the gas turbine. The generator cooler 60g of the generator 29 connected to the gas turbine, the lubricating oil cooler 70g of the gas turbine, and the compressed air cooler 80 of the gas turbine are all GT coolers related to the gas turbine. In addition, both the generator cooler 60s of the generator 49 connected to the steam turbine and the lubricating oil cooler 70s of the steam turbine are ST...

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Abstract

A plant equipped with: a boiler (30); machinery connected to the boiler (30); a water supply source (41) in which water is collected; a water supply line (44) for supplying water from the water supplysource (41) to the boiler (30); coolers (50, 60g, 60s, 70g, 70s, and 80) for moving heat from a medium to be cooled to supplied water (W), which is water flowing in the water supply line (44); thermometers (59, 69, 79, and 89) that detect the temperature of the medium to be cooled or the supplied water; and temperature regulators (53, 62, 72, and 82) that regulate the temperature of the medium tobe cooled on the basis of the temperatures detected by the thermometers (59, 69, 79, and 89).

Description

technical field [0001] The present invention relates to a plant equipped with a boiler and an operating method thereof. [0002] This application claims priority based on Japanese Patent Application No. 2016-068262 for which it applied to Japan on March 30, 2016, and uses the content here. Background technique [0003] Boilers heat water to produce steam. This steam is in most cases sent to a steam turbine. The steam discharged from the steam turbine is returned as water through the condenser. This water is returned to the boiler as feed water. [0004] A plant described in Patent Document 1 below includes a gas turbine that sends high-temperature exhaust gas to a boiler, and a steam turbine that is driven by steam generated in the boiler. During the operation of the above-mentioned gas turbine and steam turbine, the medium to be cooled which needs to be cooled flows through the components constituting the gas turbine or steam turbine. This plant includes a cooler for h...

Claims

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Application Information

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IPC IPC(8): F01K23/10F01K9/00F02C7/18
CPCF01K9/00F02C7/18F01K23/10F01K13/02F01K23/101F01K23/106F01K9/003Y02E20/16F02C6/18F02C7/141F02C7/185F05D2220/72F05D2260/232
Inventor 上地英之久田直树
Owner MITSUBISHI POWER LTD
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