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Cascaded recycling system for waste heat of internal combustion generating set

A technology for waste heat and cascade recovery of generator sets, which is applied to internal combustion piston engines, combustion engines, engine components, etc., can solve the problems of low power generation efficiency and low energy utilization efficiency, increase power generation, improve total recycling efficiency, reduce Effect of exhaust gas temperature

Active Publication Date: 2013-07-17
GRAND NEW POWER
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the flue gas waste heat of the existing internal combustion generator set is directly recycled by the organic Rankine cycle system, and the flue gas temperature of the internal combustion generator set is still high, the energy utilization efficiency is low, and the power generation efficiency is low. Provide a cascaded recovery and utilization system for waste heat of internal combustion generator sets

Method used

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  • Cascaded recycling system for waste heat of internal combustion generating set

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specific Embodiment approach 1

[0010] Specific implementation mode one: combine figure 1 To illustrate this embodiment, a cascade waste heat recovery and utilization system of an internal combustion generator set in this embodiment includes a water vapor Rankine cycle subsystem and an organic Rankine cycle subsystem;

[0011] The steam Rankine cycle subsystem includes a waste heat boiler 1, a steam turbine 4, a first generator 17 and a transfer pump 15; the organic Rankine cycle subsystem includes an organic working fluid evaporator 5, an organic working fluid preheating device 12, organic turbine 8, regenerator 9, organic working medium condenser 10, organic working medium pump 11 and second generator 18;

[0012] The superheated steam outlet of the waste heat boiler 1 is connected with the working medium inlet port 4-1 of the steam turbine 4, and the working medium outlet port 4-2 of the steam turbine 4 is connected with the first inlet 5 of the organic working medium evaporator 5 -1 port is connected, t...

specific Embodiment approach 2

[0016] Specific implementation mode two: combination figure 1 To illustrate this embodiment, the recycling system in this embodiment also includes a first regulating valve 2, and a first regulating valve is installed on the pipeline connecting the superheated steam outlet of the waste heat boiler 1 and the working medium inlet port of the steam turbine 4. Regulating valve 2, the first regulating valve 2 is an electric regulating valve or a pneumatic regulating valve. With this setting, the control is convenient and timely, meeting the needs of steam parameters. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0017] Specific implementation mode three: combination figure 1 To illustrate this embodiment, the recycling system described in this embodiment also includes a second regulating valve 3, and a second regulating valve is installed on the pipeline connecting the superheated steam outlet of the waste heat boiler 1 and the working medium outlet port 4-2 of the steam turbine 4. Two regulating valves 3, the second regulating valve 3 is an electric regulating valve or a pneumatic regulating valve. With such setting, the control is convenient and timely, which can ensure the start-up and emergency shutdown of the unit. Others are the same as in the first or second embodiment.

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Abstract

The invention provides a cascaded recycling system for waste heat of an internal combustion generating set and relates to a smoke waste heat recycling system of the internal combustion generating set, which solves the problems of high smoke temperature of the internal combustion generating set, low energy utilization efficiency and low generating efficiency as smoke waste heat of the existing internal combustion generating set is directly recycled by an organic Rankine cycle system. The cascaded recycling system for waste heat of the internal combustion generating set comprises a steam Rankine cycle subsystem and an organic Rankine cycle subsystem; the steam Rankine cycle subsystem comprises a waste heat boiler, a steam turbine, a first generator and a delivery pump; the organic Rankine cycle subsystem comprises an organic working medium evaporator, an organic working medium preheater, an organic turbine, a heat regenerator, an organic working medium condenser, an organic working medium pump and a second generator; a superheated steam outlet of the waste heat boiler is communicated with an acting cycle working medium inlet of the steam turbine, and the organic working medium condenser is communicated with a second inlet of the heat regenerator. The cascaded recycling system is used for smoke waste heat recycling of the internal combustion generating set.

Description

technical field [0001] The invention relates to a flue gas waste heat recycling system of an internal combustion generating set, in particular to a cascaded flue gas waste heat recycling system of an internal combustion generating set based on a steam Rankine cycle and an organic Rankine cycle, and belongs to the technical field of industrial energy saving. Background technique [0002] Internal combustion generator sets have been widely used in many industries and fields such as coal bed methane recovery, landfill gas power generation, and offshore platforms. However, the temperature of the flue gas generated during the operation of the internal combustion generator set is still as high as 400°C to 600°C. At present, the recovery of this part of the flue gas by most units is limited to providing some domestic hot water, and some use hot water or hot oil as the intermediate medium to directly drive the simple organic Rankine cycle system for power generation, and the power g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02G5/02F01K11/02F01D15/10
CPCY02T10/12
Inventor 栾海峰颜晓红陈亮
Owner GRAND NEW POWER
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