Lignite thermal power generation system

A lignite and drying machine technology, applied in the direction of combustion method, use of liquid separation agent, lighting and heating equipment, etc., can solve the problems of dust removal treatment defects, complicated operation of power generation process, and inconvenient management

Inactive Publication Date: 2013-02-27
CHINA SHENHUA ENERGY CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the separate setting of lignite drying system and power generation system leads to complicated power generation process and inconvenient operation and manage

Method used

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  • Lignite thermal power generation system

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Embodiment approach

[0044] Such as figure 1 As shown, as an embodiment of the present invention, preferably, the water purification device 10 includes a wet dust collector 11 and a sedimentation device 12, the liquid inlet of the wet dust collector 11 is connected to the exhaust of the heat exchanger 9 The liquid outlet is connected, the liquid discharge port of the wet dust collector 11 is connected with the liquid inlet of the precipitation device 12, the clear liquid outlet of the precipitation device 12 is connected with the clear liquid inlet of the wet dust collector 11, and the The wet dust collector 11 also has an exhaust port.

[0045] After the exhaust gas is heat-exchanged in the heat exchanger 1, the water vapor in the exhaust gas condenses to form a liquid mixture due to the low temperature. 11 exhaust ports are discharged.

[0046] The dusty wastewater enters the sedimentation device 12 for sedimentation treatment, so that the impurities in it settle to the bottom to form a turbid...

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Abstract

The invention discloses a lignite thermal power generation system, which comprises a boiler (1), a turbine (2) and a condenser (3). An air exhaust opening of the boiler (1) is connected with an air inlet of the turbine (2); an air exhaust opening of the turbine (2) is connected with an air inlet of the condenser (3); a liquid discharging opening of the condenser (3) is connected with a liquid inlet of the boiler (1), wherein the lignite thermal power generation system also comprises a coal bunker (4) and a dryer (5); a discharge port of the coal bunker (4) is connected with a feed port of the dryer (5); and a discharge port of the dryer (5) is connected with a feed port of the boiler (1). A lignite drying system is combined in the lignite thermal power generation system, so that lignite can be directly subjected to combustion for power generation after being dried.

Description

technical field [0001] The invention relates to the field of coal thermal power generation, in particular to a lignite thermal power generation system. Background technique [0002] At present, because lignite resources are relatively abundant, the reserves are large, and the cost is low, lignite is usually used as fuel for power generation in thermal power generation systems. my country's proven lignite reserves are about 200 billion tons, and most of the lignite is distributed in the northeastern part of Inner Mongolia, accounting for about 3 / 4 of the national lignite reserves. However, lignite generally has disadvantages such as high moisture content (about 30%-50%), low ignition point, and large carbon dioxide emissions. Direct use of combustion for power generation will result in low power generation efficiency, greater environmental pollution, and will increase The equipment construction and operating costs of the power plant, and the high water content of lignite wil...

Claims

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Application Information

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IPC IPC(8): F23K1/00B01D47/00
Inventor 余学海廖海燕
Owner CHINA SHENHUA ENERGY CO LTD
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