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Thermoelectric-coupling type comprehensive energy-utilizing system based on air-cooling device and working method

A technology of thermoelectric coupling and air-cooling device, which is applied in the direction of steam engine device, preheating, steam application, etc., to achieve the effect of reduced engineering cost, good economy, and improvement of low-temperature corrosion problems in winter

Active Publication Date: 2013-10-02
SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, previous studies only considered the low-energy waste heat utilization of boiler side exhaust, or only considered the low-energy utilization of exhaust steam on the turbine side, but did not organically combine the low-energy heat utilization of exhaust steam on the turbine side with the low-energy utilization of the boiler side. to improve the waste heat recovery efficiency of the whole plant

Method used

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  • Thermoelectric-coupling type comprehensive energy-utilizing system based on air-cooling device and working method
  • Thermoelectric-coupling type comprehensive energy-utilizing system based on air-cooling device and working method
  • Thermoelectric-coupling type comprehensive energy-utilizing system based on air-cooling device and working method

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Effect test

Embodiment 1

[0069] Provide boiler combustion air for boiler combustion user L.

[0070] It can save the heater investment and heater steam or hot water consumption, saving high-grade energy. The invention adopts a specially designed air-cooled center island, adopts integrally closed and multi-channel compartment forced ventilation cooling design, completely solves the problem of hot air backflow, and can realize air distribution for different waste heat utilization loads on demand at the same time.

Embodiment 2

[0072] For external hot air heating user J hot air heating.

[0073] One of the traditional heating methods is to use heat and electricity combined cycle, and the heating medium is steam or water; the second traditional heating method is to use central air conditioning, and the heating medium is water or hot air. The heat source of the invention is a direct air-cooled center island, and the hot air after absorbing the waste heat of the steam power cycle is used for heating, and the waste heat of the steam power cycle can be used to realize the function of a large central air conditioner, thereby saving high-grade energy.

Embodiment 3

[0075] Conveying hot air for coal thawing user C in the power plant and coal thawing user E in the steel plant.

[0076] The traditional method is to use infrared, steam heating.

[0077] The invention uses a specially designed air-cooled central island to use a large amount of waste heat of the steam power cycle to raise the temperature of the ambient air first, and then heat it to above 100°C through the heater to be used for the coal thawing process, thus playing the role of energy saving. The heating source of the air heater can be steam, hot water, flue gas, high-temperature hot air, high-temperature oil and other medium heating or electric heating.

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Abstract

The invention discloses a thermoelectric-coupling type comprehensive energy-utilizing system based on an air-cooling device and a working method of the thermoelectric-coupling type comprehensive energy-utilizing system. The system comprises the air-cooling device, wherein the air-cooling device is connected with a condensed-water pump, the condensed-water pump is connected to a steam engine through a condensed-water booster pump, a plurality of stages of low-pressure heating systems, a deoxidizing device, a water-feeding pump, a high-pressure heating system and a boiler in sequence, and the steam engine is respectively connected with a generator and the air-cooling device; the air-cooling device comprises an air-cooling central island, wherein the inlet of the air-cooling central island is communicated with a plurality of cold-air inlet channels, the outlet of the air-cooling central island is communicated with a plurality of hot-air outlet channels, a switching valve is arranged on each hot-air outlet channel, the switching valve comprises two valve positions, one valve position is communicated to a residual-heat utilizing user, and the other valve position is communicated to a hot-air temporarily-diffusing channel; and at least one switching valve also comprises a third valve position, the third valve position is communicated to a hot-air recycling-pipeline mother pipe through an air heater, and a plurality of hot-air recycling-pipeline branch pipes are arranged on the hot-air recycling-pipeline mother pipe, are correspondingly converged into the cold-air inlet channels one by one and are communicated to the air-cooling central island.

Description

technical field [0001] The invention relates to an energy comprehensive utilization system, in particular to a thermoelectric coupling energy comprehensive utilization system and working method based on an air cooling device. The utility model belongs to the technical field of waste heat utilization and total energy system. Background technique [0002] The cycle thermal efficiency of steam power plant rarely exceeds 40%, and about 60% of the heat emitted by the fuel is dissipated into the environment, most of which is exhaust steam discharged in the condenser, and discharged into the environment by cooling water or wind. On the one hand, these waste heat emissions have caused energy waste, and on the other hand, they have also exacerbated the city's "heat island effect". The traditional heat and power combined cycle mainly uses steam or hot water heating to utilize the heat of the cold end of the steam turbine. Air has disadvantages such as small heat capacity and low the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K17/02F22D1/36
CPCY02E20/14Y02E50/10
Inventor 刘义达祁金胜张乐川高永芬李洪超李官鹏
Owner SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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