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Positive and negative partial oxidation and steam injection combined circulation of gas turbine

A gas turbine and combined cycle technology, which is applied in the direction of gas turbine devices, combined combustion mitigation, mechanical equipment, etc., can solve problems such as optimization of pressure ratio drop, achieve self-balancing, reduce pollutant emissions, and improve energy utilization efficiency

Active Publication Date: 2015-04-22
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Due to the existence of the reverse cycle, the optimal pressure ratio of the cycle drops

Method used

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  • Positive and negative partial oxidation and steam injection combined circulation of gas turbine
  • Positive and negative partial oxidation and steam injection combined circulation of gas turbine

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Embodiment Construction

[0050] Please combine figure 1 , the partial oxidation steam injection forward and reverse gas turbine combined cycle of the present invention comprises a low-pressure compressor 1, a high-pressure compressor 2, a partial oxidation reactor 3, a mixer 4, a high-pressure turbine 5, a combustion chamber 6, a low-pressure turbine 7, Second fuel heater 8, superheater 9, evaporator 10, economizer 11, first fuel heater 12, flue gas reheater 13, flue gas cooler 14, water droplet filter 15, exhaust compressor 16 , water pump 17, cooling water cooler 18, water pump 19, fuel compressor 20, first generator 21, second generator 22.

[0051] The specific connection method is:

[0052]The air enters from the air input end of the low-pressure compressor 1; the output end of the low-pressure compressor 1 is connected with the input end of the high-pressure compressor 2, the air input end of the combustion chamber 6, and the cooling air input end of the turbine 7; the high-pressure compressor ...

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Abstract

A positive and negative gas partial oxidation and steam injection combined circulation of a turbine is provided. Fuel is firstly and partially oxidized in a partial oxidation reactor of an overhead circulation of the gas turbine, and generated combustible gas expands to act and then enters a middle circulation of the gas turbine to be combusted for action; waste heat of a bottom circulation is recycled and generates steam, a part of steam is injected in the overhead circulation, and a part of the steam is injected to the partial oxidation reactor; the rear portion of the circulation of gas turbine is connected with a negative gas turbine circulation in a joined mode. The energy gradient utilization principle is utilized, a partial oxidation method, an advanced steam injection circulation and a negative brayton cycle are organically combined through system integration, the energy utilization efficiency can be substantially improved, emission of pollutants is lowered, and self balance between steam injection water consumption and water recovery is achieved.

Description

technical field [0001] The invention relates to the technical field of gas turbines, in particular to a partial oxidation steam injection forward and reverse gas turbine combined cycle. Background technique [0002] A simple cycle gas turbine consists of a compressor, a combustor and a gas turbine (turbine for short). The compressor continuously inhales air from the atmosphere and compresses it. The compressed air enters the combustion chamber, mixes with the injected fuel and burns to become high-temperature gas, which then flows into the turbine to expand and do work, pushing the turbine impeller to carry the compressed air. The turbine impeller rotates together, and the residual work is used as the output mechanical work of the gas turbine and can generate electricity. The gas temperature before the turbine inlet is called the initial gas temperature. In order to make full use of the exhaust waste heat of the gas turbine, a waste heat boiler is generally installed at the...

Claims

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Application Information

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IPC IPC(8): F02C6/00F02C7/224F02C7/18F02C3/30
CPCY02E20/14Y02E20/16
Inventor 张士杰肖云汉
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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