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Waste heat recovery system for thermal power plant

A technology of waste heat recovery system and thermal power plant, which is applied in the direction of steam application, steam engine device, machine/engine, etc. It can solve the problems of heat loss and low efficiency of waste heat recovery, so as to improve heat recovery, improve recovery efficiency and reduce harmful substances Effect

Pending Publication Date: 2021-04-09
XIAN TPRI THERMAL CONTROL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the existing thermal power plants use coal to generate electricity, the flue gas produced by the coal contains a large amount of heat, which is directly discharged into the air and wastes heat energy resources. At present, the efficiency of waste heat recovery is low, which still causes a large amount of heat loss. Therefore, it is necessary to Design a Waste Heat Recovery System for Thermal Power Plants

Method used

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  • Waste heat recovery system for thermal power plant
  • Waste heat recovery system for thermal power plant
  • Waste heat recovery system for thermal power plant

Examples

Experimental program
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Effect test

Embodiment 1

[0030]The dust removal mechanism includes a plurality of mounting seats 20 and a plurality of electrostatic rods 21. The bottom of the inner wall of the flue gas treatment equipment A4 is equidistantly fixed with a plurality of mounting seats 20, and one side of the plurality of mounting seats 20 is fixedly installed with electrostatic rods. Rod 21, the bottom end of the flue gas treatment equipment A4 is equipped with an ash hopper 22, and the inside of the ash hopper 22 is fixed with a solenoid valve. The charge on the object in the ion radiation area is neutralized. When the object's surface is negatively charged, it will attract the positive charge in the radiation area. When the object's surface is positively charged, it will attract radiation. The negative charge in the area can effectively remove the dust in the flue gas.

Embodiment 2

[0032] The reaction mechanism 14 includes two equipment boxes 24, a plurality of stirring shafts 25, a plurality of connecting shafts 26, a plurality of gears 28, a chain 27 and a driving motor 29, and the bottoms on both sides of the inner wall of the flue gas treatment equipment B5 are rotationally connected with a plurality of stirring shafts 25. One end of a plurality of stirring shafts 25 passes through the flue gas treatment equipment B5 and is fixedly connected with a connecting shaft 26. The surfaces of the plurality of connecting shafts 26 are sleeved and connected with gears 28, and the plurality of gears 28 are connected through a chain 27. , the bottoms on both sides of the flue gas treatment equipment B5 are fixedly equipped with equipment boxes 24, and the insides of the two equipment boxes 24 are fixedly installed with driving motors 29, and the output shafts of the two driving motors 29 are respectively connected to the corresponding connecting shaft 26 ends fix...

Embodiment 3

[0034] The water circulation equipment 2 includes an outer box body 30, an inner box body 31 and thermal insulation cotton 32. The inner box body 31 is sheathed and connected to the outer box body 30, and the outer box body 30 and the inner box body 31 are filled with thermal insulation cotton 32. The thermal insulation cotton 32 filled has a better thermal insulation effect and reduces the loss of heat. The side of the fixed plate 1 is fixedly equipped with a PLC controller, the first air pump 9, the second air pump 10, the driving motor 29, and the circulating pump 33. and the output pump 34 are electrically connected to the external power supply through the PLC controller, and the inner wall of the water circulation equipment 2 is respectively equipped with a liquid level sensor and a temperature sensor, and the installed liquid level sensor and the temperature sensor are convenient for observing the liquid level and the inside of the water circulation equipment 2. The tempe...

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Abstract

The invention discloses a waste heat recovery system for a thermal power plant. The waste heat recovery system comprises a fixing plate, and a water circulation device, a heat exchange device, a flue gas treatment device A and a flue gas treatment device B are installed at the top end of the fixing plate; a flue gas inlet pipe is fixedly installed on one side of the heat exchange device, and a water inlet pipe and a return pipe are installed on the side of the heat exchange device; and a circulating pump is fixedly installed on one side of the water circulation device, and the water inlet end of the circulating pump communicates with the interior of the circulating pump. According to the waste heat recovery system, the water circulation device is connected with the heat exchange device, heat conduction blocks and partition plates are additionally arranged in the heat exchange device, flowing of flue gas increased, recovery of heat in the flue gas is effectively improved, and the loss of heat in the flue gas is reduced; the flue gas after waste heat recovery is treated through the installed flue gas treatment device A and the flue gas treatment device B; and dust, sulfur-containing compounds and nitrate-containing compounds in the flue gas are effectively removed through filtration, electrostatic rod dust removal and chemical reaction, and harmful substances in the flue gas are reduced.

Description

technical field [0001] The invention relates to a waste heat recovery system, in particular to a waste heat recovery system for thermal power plants, which belongs to the technical field of thermal power plants. Background technique [0002] Thermal power plants, referred to as thermal power plants, are factories that use combustibles (such as coal) as fuel to produce electricity. Its basic production process is: when the fuel is burned, the water is heated to generate steam, and the chemical energy of the fuel is converted into thermal energy. The steam pressure drives the steam turbine to rotate, and the thermal energy is converted into mechanical energy. Then the steam turbine drives the generator to rotate, and the mechanical energy is converted into electrical energy. The motive is usually a steam engine or a gas turbine. In some smaller power stations, an internal combustion engine may also be used. They all generate electricity by using the pressure drop in the proces...

Claims

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Application Information

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IPC IPC(8): F01K17/02F01K13/00F01K13/02F01K21/00F01K27/00
CPCF01K17/02F01K21/00F01K27/00F01K13/003F01K13/02
Inventor 温荣斌丁伟刘爱君郑小刚
Owner XIAN TPRI THERMAL CONTROL TECH
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