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Combined heat and power generation method for power plant

A technology of combined heat and power generation and power plants, applied in heating methods, heat pumps, household heating, etc., to achieve the effect of step-by-step utilization

Pending Publication Date: 2020-06-30
DALIAN NATIONALITIES UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the power plant water increases heat step by step, the present invention proposes the following technical solutions:

Method used

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  • Combined heat and power generation method for power plant

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Effect test

Embodiment 1

[0011] A heating system integrating multiple waste heat couplings, including a float glass waste heat recovery device, a solar waste heat recovery device and a lithium bromide heat pump heating device.

[0012] The float glass waste heat recovery device includes a float glass workshop (1), a heat pool (22), a cold pool (21), a second circulation pump (17), a two-stage control valve, a cooling tower (6), a heat pump , the first water outlet of the float glass workshop (1) is passed into the hot pool (22) by the first water pipe, the inlet of the cooling tower (6) is connected with the upper water pipe, and the outlet pipeline of the cooling tower (6) is passed into the cold pool ( 21), the upper water pipe is equipped with a two-stage control valve and a circulation pump, the upper water pipe leads to the heat pool (22), and the circulation pump is arranged at the position between the heat pool (22) and the two-stage control valve on the upper water pipe, the two-stage The valv...

Embodiment 2

[0045] A power plant waste heat, solar energy, and float glass waste heat coupling heating system. The whole system is composed of a float glass waste heat recovery device, a solar waste heat recovery device, and a lithium bromide heat pump heating device.

[0046] The main working principle of the float glass waste heat recovery device is: when the waste heat recovery is carried out in winter, the 37-39 ℃ circulating water containing a large amount of low-temperature waste heat generated by the float glass workshop 1 is discharged into the heat pool 22, and the third circulating pump 18. Pressurize the second circulation pump 17, open the eighth control valve 12, the ninth control valve 13, the tenth control valve 14, the eleventh control valve 15, and close the third control valve 7 and the fourth control valve 8 , the fifth control valve 9, the sixth control valve 10; these circulating water are introduced into the first heat pump 23, the second heat pump 24, and the third h...

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Abstract

The invention discloses a combined heat and power generation method for a power plant, belongs to the field of heat supply waste heat recovery and heat distribution, and aims to solve the problem thatthe heat of power plant water is increased step by step. Power plant water at about 5 DEG C enters a cold water inlet of a condenser of the steam heat pump unit (48), steam exhaust water generated bythe steam exhaust device (50) exchanges heat with power plant water at about 5 DEG C of the condenser end of the steam heat pump unit (48) at the evaporator end of the steam heat pump unit (48), primary heat exchange water at about 30 DEG C is output from the condenser end of the steam heat pump unit (48), the first-stage heat exchange water enters a medium-temperature heat source of the third lithium bromide heat pump unit (47) and serves as inlet water of the third lithium bromide heat pump unit (47), and the effect is that heat is increased step by step.

Description

technical field [0001] The invention belongs to the field of heating waste heat recovery and heat distribution, and relates to a cogeneration method of heat and power in a power plant. Background technique [0002] In recent years, with the increase of urban heating area in my country and the increase of production line construction in industrial plants, the heat consumption in my country has increased rapidly. From the analysis of heating methods, there are currently the following ways for residents to heat in my country: thermoelectricity Combined production mode, central heating of small and medium-sized regional boiler rooms, small domestic gas water heaters, household coal-fired furnaces, etc., among which the combined heat and power mode is a combination of using the high-grade thermal energy of the fuel to generate electricity and then using its low-grade thermal energy for heating Use energy technology. At present, the average power generation efficiency of a 3 millio...

Claims

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Application Information

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IPC IPC(8): F25B15/06F25B30/04F24D15/04F28D7/00F01K17/02
CPCF25B15/06F25B30/04F24D15/04F28D7/00F01K17/025Y02E20/14Y02B30/625
Inventor 汪语哲毕海洋杨正凯李佳乐张皓天
Owner DALIAN NATIONALITIES UNIVERSITY
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