Garbage incineration furnace low-energy-level working medium and coal fired boiler coupled high-energy-level utilization system

A waste incinerator and coal-fired boiler technology, applied in the direction of incinerators, combustion methods, combustion types, etc., can solve problems such as low power generation efficiency, high equipment investment, high-temperature corrosion, etc., to reduce coal consumption for power generation, improve power generation efficiency, and prolong The effect of service life

Pending Publication Date: 2018-07-10
HARBIN BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The waste incinerator is for the purpose of disposing of waste, and uses the heat of incineration to arrange a waste heat boiler with a superheater in the furnace. The power generation efficiency of the waste heat furnace is very low, at 18% to 25%, which is far lower than the 45% power generation of high-efficiency coal-fired units. efficiency
At the same time, waste incinerators have high equipment investment, high-temperature corrosion on the heating surface, low-temperature corrosion on the tail, fly ash slagging, low dioxin flue gas emission indicators, and need to be equipped with separate flue gas purification systems such as desulfurization, denitrification, and dust removal. Equipment High cost and operation and maintenance costs

Method used

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  • Garbage incineration furnace low-energy-level working medium and coal fired boiler coupled high-energy-level utilization system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A high-energy utilization system in which a low-energy-level working fluid of a waste incinerator is coupled with a coal-fired boiler. The heating surface of the waste heat furnace of the furnace 3 is connected, and the outlet water pipe 8 of the waste incinerator is connected with the other water supply pipe of the high-pressure heater, and then connected with the tail economizer 5 of the coal-fired boiler 4. After being heated with the waste heat furnace Shut-off valves 6 are respectively arranged on the water supply pipeline connected on the surface and the outlet water pipeline of the garbage incinerator.

Embodiment 2

[0015] The superheated steam generation method of the above-mentioned waste incinerator low-energy-level working fluid coupled with the coal-fired boiler high-energy utilization system, the feed water enters the low-pressure heater through the feed water pump, and then enters the high-pressure heaters at all levels through the deaerator, and comes out from the high-pressure heater The working medium is divided into two routes, one of which is sent to the economizer inlet of the coal-fired boiler through the water supply pipeline, and the other is sent to the waste heat furnace for waste incineration through the water supply pipeline, passes through the heating surfaces of all levels, and is collected by the outlet pipeline of the final heating surface. into the inlet of the economizer of the coal-fired boiler, increase the inlet water temperature of the economizer of the coal-fired boiler, and raise the low-level unsaturated water to the high-level main Steam, realizing energy ...

Embodiment 3

[0017] According to the high-energy utilization system of the waste incinerator low-energy-level working fluid coupled with the coal-fired boiler described in Embodiment 1 or 2, the working fluid from the high-pressure heater is connected to the tail economizer of the coal-fired boiler through a feed water pump, and another All the way is introduced to the heating surface of the waste heat furnace through the feed water pump, and the unsaturated water coming out of the heating surface is combined with the water from the high-pressure heater through the pipeline, and then introduced to the economizer inlet of the coal-fired boiler.

[0018] As a further improvement of the present invention, the high-pressure unsaturated water of the body of the garbage incinerator is connected to the heating surface of the waste heat furnace of the garbage incinerator through a pipeline. With such a setting, the high-pressure unsaturated water produced by the garbage incineration body of the gar...

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Abstract

The invention discloses a garbage incineration furnace low-energy-level working medium and coal fired boiler coupled high-energy-level utilization system. With garbage treatment as purpose, a garbageincineration furnace uses incineration heat in an afterheat boiler with a superheater inside, and is lower in power generation efficiency. The system comprises a high-pressure heater (1); a way of a water feeding pipeline (7) with a water feeding pump (2) of the high-pressure heater is connected with an afterheat furnace heated surface of a garbage incineration furnace (3); an outlet water pipe (8) of the garbage incineration furnace is connected with a tail coal economizer (5) of a coal fired boiler (4) after gathering with the other way of the water feeding pipeline of the high-pressure heater; and stop valves (6) are arranged on the water feeding pipeline connected with the afterheat furnace heated surface and the outlet water pipe of the garbage incineration furnace. The invention is applied to the garbage incineration furnace low-energy-level working medium and coal fired boiler coupled high-energy-level utilization system.

Description

Technical field: [0001] The invention relates to a high-energy-level utilization system in which a low-energy-level working medium of a waste incinerator is coupled with a coal-fired boiler, and specifically relates to a waste incinerator working medium and a coal-fired boiler coupled to generate electricity. Coal boiler coupling to realize energy level transfer and upgrade to high energy level utilization system. Background technique: [0002] The waste incinerator is for the purpose of disposing of waste, and uses the heat of incineration to arrange a waste heat boiler with a superheater in the furnace. The power generation efficiency of the waste heat furnace is very low, at 18% to 25%, which is far lower than the 45% power generation of high-efficiency coal-fired units. efficiency. At the same time, waste incinerators have high equipment investment, high-temperature corrosion on the heating surface, low-temperature corrosion on the tail, fly ash slagging, low dioxin flu...

Claims

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Application Information

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IPC IPC(8): F22D1/32F22D1/50F23G5/46
CPCF22D1/32F22D1/50F23G5/46F23G2206/203Y02E20/12
Inventor 于强黄莺苗闪闪于景泽殷亚宁韩升利徐彦辉王婷李冲
Owner HARBIN BOILER
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