CN106439782B - A kind of composite boiler flue gas waste heat recovery system - Google Patents
A kind of composite boiler flue gas waste heat recovery system Download PDFInfo
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- CN106439782B CN106439782B CN201510485918.4A CN201510485918A CN106439782B CN 106439782 B CN106439782 B CN 106439782B CN 201510485918 A CN201510485918 A CN 201510485918A CN 106439782 B CN106439782 B CN 106439782B
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Abstract
The present invention relates to a kind of composite boiler flue gas waste heat recovery systems, it includes boiler, air duct and flue are equipped on the boiler, steam air heater is equipped on the air duct, pressure fan is equipped with below the steam air heater, air preheater is equipped on air duct and flue above the steam air heater, the outlet of the flue is connected with the first gas cooler side, first gas cooler other side is connected with electrostatic precipitator side, the electrostatic precipitator other side is connected with booster fan side, the booster fan other side is connected with the second gas cooler side, second gas cooler other side is connected with one side lower part of desulfurizing tower, another upper lateral part of desulfurizing tower is connected with one side lower part of Wet chimney.Smoke discharging residual heat of the present invention recycles, and reduces exhaust gas temperature, saves the water consumption of desulfurizing tower, improves boiler efficiency.
Description
Technical field
The present invention relates to a kind of residual neat recovering systems, and in particular to a kind of flue gas waste heat recovery system.
Background technique
Currently, flue gas is the main path of general energy consumption equipment waste energy, for example boiler exhaust gas energy consumption is about 15%,
And mainly energy consumption is all to pass through flue gas emission to forming machine, dryer and kiln of other equipment such as dyeing etc..Now
Industrial Boiler use in it is low in the prevalence of heat utilization ratio, residual heat of exhaust flue gas temperature is excessively high and flue gas in pollution
The problems such as environmental gas too high levels.Industrial Boiler is the main thermal power equipment in China at present, as I am excessively economical quick
Development, energy consumption increasingly increase, and the problem of urban air quality worsening is more prominent.
Summary of the invention
Goal of the invention: purpose of the invention is to overcome the shortcomings in the prior art, provides a kind of smoke discharging residual heat recycling
It utilizes, reduces exhaust gas temperature, save the water consumption of desulfurizing tower, improve boiler efficiency, environmentally friendly composite boiler fume afterheat returns
Receipts system.
Technical solution: in order to solve the above-mentioned technical problem, a kind of composite boiler flue gas waste heat recovery of the present invention
System, it includes boiler, and middle and upper part is equipped with air duct on the outside of the boiler wall, is equipped with cigarette in the boiler wall outer upper
Road is equipped with steam air heater on the air duct, is equipped with pressure fan below the steam air heater, air duct above the steam air heater and
Flue is equipped with air preheater, and the outlet of the flue is connected with the first gas cooler side, and first flue gas is cooling
The device other side is connected with electrostatic precipitator side, and the electrostatic precipitator other side is connected with booster fan side, the pressurization
The blower other side is connected with the second gas cooler side, second gas cooler other side and one side lower part phase of desulfurizing tower
Even, another upper lateral part of desulfurizing tower is connected with one side lower part of Wet chimney, between the steam air heater and the second gas cooler
It is cold and hot by the second cold and hot water coke slurry pipeline and first at the top of first gas cooler equipped with the first cold and hot water coke slurry pipeline
Water coke slurry pipeline is connected, and water pump is equipped on the described first cold and hot water coke slurry pipeline, under the Wet chimney lower part and desulfurizing tower
It is equipped with the first connecting pipe between portion, the first acid-proof pump is equipped in first connecting pipe, outside the desulfurizing tower tower wall
Side lower part is equipped with the second acid-proof pump to the second connecting pipe is equipped between middle and upper part in second connecting pipe.
The first cold and hot water coke slurry pipeline is divided into the first cold water pipes and the first hot water pipeline, in first hot-water line
Road is equipped with water pump, and first cold water pipes are located between steam air heater and the second gas cooler top, first hot water
Between pipeline is located at the top of steam air heater and the second gas cooler.
The second cold and hot water coke slurry pipeline is divided into the second cold water pipes and the second hot water pipeline, second cold water pipes
It is connected with the first cold water pipes, second hot water pipeline is connected with the first hot water pipeline.
The utility model has the advantages that compared with prior art, the present invention its remarkable advantage is: overall structure setting of the present invention rationally, is adopted
With the first cold and hot water coke slurry pipeline connection steam air heater and the second gas cooler, the second cold and hot water coke slurry pipeline and first is recycled
Cold and hot water coke slurry pipeline is connected, to connect steam air heater and the first gas cooler, carries out circulated heat exchange, pre- using air
Hot device, the burner hearth that hot-air is sent into boiler is combustion-supporting, improves combustion position, using electrostatic precipitator, carries out flue gas ash removal, using the
One gas cooler and the second gas cooler reduce flue-gas temperature, and Mist heat recovering, flue gas is after supercooling, temperature drop
Be passed through desulfurizing tower to best desulfurization temperature, not only desulfuration efficiency is high, but also evaporated water is greatly reduced, using the first acid-proof pump and
Second acid-proof pump not only effectively improves the reclamation rate of acid, but also the usage safety performance of Wet chimney can be improved, and this system can be with
Boiler efficiency is improved, energy conservation and environmental protection meets actual operation requirements.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
As shown in Figure 1, a kind of composite boiler flue gas waste heat recovery system of the present invention, it includes boiler 1, in institute
It states middle and upper part on the outside of 1 furnace wall of boiler and is equipped with air duct 2, flue 3 is equipped in the 1 furnace wall outer upper of boiler, on the air duct 2
Equipped with steam air heater 4, it is equipped with pressure fan 5 below the steam air heater 4, is set on the air duct 2 and flue 3 above the steam air heater 4
There is air preheater 6, the outlet of the flue 3 is connected with 7 side of the first gas cooler, and first gas cooler 7 is another
Side is connected with 8 side of electrostatic precipitator, and 8 other side of electrostatic precipitator is connected with 9 side of booster fan, the pressurization wind
9 other side of machine is connected with 10 side of the second gas cooler, 10 other side of the second gas cooler and 11 side of desulfurizing tower
Lower part is connected, and another upper lateral part of the desulfurizing tower 11 is connected with 12 1 side lower part of Wet chimney, in the steam air heater 4 and the second flue gas
It is equipped with the first cold and hot water coke slurry pipeline between cooler 10, passes through the second cold and hot water coke slurry at the top of first gas cooler 7
Pipeline is connected with the first cold and hot water coke slurry pipeline, water pump 13 is equipped on the described first cold and hot water coke slurry pipeline, in the wet cigarette
It is equipped with the first connecting pipe 14 between 11 lower part of 12 lower part of chimney and desulfurizing tower, it is resistance to that first is equipped in first connecting pipe 14
Acid pump 15 connects in the 11 tower wall outer lower portion of desulfurizing tower to the second connecting pipe 16 is equipped between middle and upper part described second
Adapter tube road 16 is equipped with the second acid-proof pump 17；The first cold and hot water coke slurry pipeline is divided into the first cold water pipes 18 and the first hot water
Pipeline 19, is equipped with water pump 13 on first hot water pipeline 19, and first cold water pipes 18 are located at steam air heater 4 and the second cigarette
Between 10 top of Gas Cooler, first hot water pipeline 19 is located between 10 top of steam air heater 4 and the second gas cooler；Institute
It states the second cold and hot water coke slurry pipeline and is divided into the second cold water pipes 20 and the second hot water pipeline 21, second cold water pipes 20 and
One cold water pipes 18 are connected, and second hot water pipeline 21 is connected with the first hot water pipeline 19.Overall structure setting of the present invention is closed
Reason recycles the second cold and hot water coke slurry pipeline using the first cold and hot water coke slurry pipeline connection steam air heater and the second gas cooler
It is connected with the first cold and hot water coke slurry pipeline, to connect steam air heater and the first gas cooler, carries out circulated heat exchange, use
Air preheater, the burner hearth that hot-air is sent into boiler is combustion-supporting, improves combustion position, using electrostatic precipitator, carries out flue gas ash removal,
Using the first gas cooler and the second gas cooler, reduce flue-gas temperature, Mist heat recovering, flue gas after supercooling,
Temperature drops to best desulfurization temperature and is passed through desulfurizing tower, and not only desulfuration efficiency is high, but also evaporated water is greatly reduced, resistance to using first
Acid pump and the second acid-proof pump, not only effectively improve the reclamation rate of acid, but also the usage safety performance of Wet chimney can be improved, this is
Boiler efficiency can be improved in system, and energy conservation and environmental protection meets actual operation requirements.
The present invention provides a kind of thinking and methods, and there are many method and the approach for implementing the technical solution, the above institute
Stating is only the preferred embodiment of the present invention, it is noted that for those skilled in the art, is not being departed from
Under the premise of the principle of the invention, several improvements and modifications can also be made, these improvements and modifications also should be regarded as guarantor of the invention
Range is protected, all undefined components in this embodiment can be implemented in the prior art.
Claims (1)
1. a kind of composite boiler flue gas waste heat recovery system, it is characterised in that: it includes boiler (1), in the boiler (1) furnace
Middle and upper part is equipped with air duct (2) on the outside of wall, flue (3) is equipped in the boiler (1) furnace wall outer upper, on the air duct (2)
Equipped with steam air heater (4), be equipped with pressure fan (5) below the steam air heater (4), air duct (2) above the steam air heater (4) and
Flue (3) is equipped with air preheater (6), and the outlet of the flue (3) is connected with the first gas cooler (7) side, described
First gas cooler (7) other side is connected with electrostatic precipitator (8) side, electrostatic precipitator (8) other side and pressurization
Blower (9) side is connected, and booster fan (9) other side is connected with the second gas cooler (10) side, second cigarette
Gas Cooler (10) other side is connected with (11) one side lower part of desulfurizing tower, another upper lateral part of the desulfurizing tower (11) and Wet chimney
(12) one side lower parts are connected, and the first cold and hot water coke slurry pipe is equipped between the steam air heater (4) and the second gas cooler (10)
Road, the first gas cooler (7) top are connected by the second cold and hot water coke slurry pipeline with the first cold and hot water coke slurry pipeline,
The first cold and hot water coke slurry pipeline is equipped with water pump (13), between the Wet chimney (12) lower part and desulfurizing tower (11) lower part
Equipped with the first connecting pipe (14), the first acid-proof pump (15) are equipped on first connecting pipe (14), in the desulfurizing tower
(11) tower wall outer lower portion is equipped with the second connecting pipe (16) between middle and upper part, is equipped on second connecting pipe (16)
Second acid-proof pump (17)；The first cold and hot water coke slurry pipeline is divided into the first cold water pipes (18) and the first hot water pipeline (19),
Water pump (13) are equipped on first hot water pipeline (19), first cold water pipes (18) are located at steam air heater (4) and second
Between at the top of gas cooler (10), first hot water pipeline (19) is located at steam air heater (4) and the second gas cooler (10)
Between top；The second cold and hot water coke slurry pipeline is divided into the second cold water pipes (20) and the second hot water pipeline (21), and described
Secondary cooling water pipeline (20) is connected with the first cold water pipes (18), second hot water pipeline (21) and the first hot water pipeline (19) phase
Even.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510485918.4A CN106439782B (en) | 2015-08-10 | 2015-08-10 | A kind of composite boiler flue gas waste heat recovery system |
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| CN201510485918.4A CN106439782B (en) | 2015-08-10 | 2015-08-10 | A kind of composite boiler flue gas waste heat recovery system |
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| CN106439782A CN106439782A (en) | 2017-02-22 |
| CN106439782B true CN106439782B (en) | 2019-05-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109724099A (en) * | 2019-01-30 | 2019-05-07 | 江苏罗奈德流体科技有限公司 | A kind of white technique of boiler smoke qi exhaustion and device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900347A (en) * | 2010-08-03 | 2010-12-01 | 山东泓奥电力科技有限公司 | System for high-grade recycling waste heat of smoke discharged from boiler of power station |
| CN202177093U (en) * | 2011-05-19 | 2012-03-28 | 中国电力工程顾问集团华东电力设计院 | Multi-level efficient displacement type fume waste-heat utilization system |
| CN203549875U (en) * | 2013-11-05 | 2014-04-16 | 上海和衡能源科技发展有限公司 | Coal-fired power plant thermodynamic system for achieving energy conservation and emission reduction and avoiding SO3 low temperature corrosion |
| CN104791761A (en) * | 2015-04-20 | 2015-07-22 | 广州粤能电力科技开发有限公司 | Step utilization device for boiler flue gas waste heat |
| CN204494453U (en) * | 2015-02-10 | 2015-07-22 | 西安西热锅炉环保工程有限公司 | A kind of energy-saving and emission-reduction system based on the exhaust heat stepped utilization of coal steam-electric plant smoke |
| CN204901733U (en) * | 2015-08-10 | 2015-12-23 | 江苏海德节能科技有限公司 | Novel composite boiler residual heat from flue gas system |
-
2015
- 2015-08-10 CN CN201510485918.4A patent/CN106439782B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900347A (en) * | 2010-08-03 | 2010-12-01 | 山东泓奥电力科技有限公司 | System for high-grade recycling waste heat of smoke discharged from boiler of power station |
| CN202177093U (en) * | 2011-05-19 | 2012-03-28 | 中国电力工程顾问集团华东电力设计院 | Multi-level efficient displacement type fume waste-heat utilization system |
| CN203549875U (en) * | 2013-11-05 | 2014-04-16 | 上海和衡能源科技发展有限公司 | Coal-fired power plant thermodynamic system for achieving energy conservation and emission reduction and avoiding SO3 low temperature corrosion |
| CN204494453U (en) * | 2015-02-10 | 2015-07-22 | 西安西热锅炉环保工程有限公司 | A kind of energy-saving and emission-reduction system based on the exhaust heat stepped utilization of coal steam-electric plant smoke |
| CN104791761A (en) * | 2015-04-20 | 2015-07-22 | 广州粤能电力科技开发有限公司 | Step utilization device for boiler flue gas waste heat |
| CN204901733U (en) * | 2015-08-10 | 2015-12-23 | 江苏海德节能科技有限公司 | Novel composite boiler residual heat from flue gas system |
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| CN106439782A (en) | 2017-02-22 |
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