CN106439780A - Novel boiler flue gas waste heat recovery system - Google Patents
Novel boiler flue gas waste heat recovery system Download PDFInfo
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- CN106439780A CN106439780A CN201510483742.9A CN201510483742A CN106439780A CN 106439780 A CN106439780 A CN 106439780A CN 201510483742 A CN201510483742 A CN 201510483742A CN 106439780 A CN106439780 A CN 106439780A
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- flue gas
- hot water
- waste heat
- gas cooler
- cooler
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Abstract
The invention relates to a novel boiler flue gas waste heat recovery system. The novel boiler flue gas waste heat recovery system comprises a boiler which is provided with a flue, an air pre-heater is arranged on the flue, an air heater is arranged below the inner side of the air pre-heater, and a forced draught blower is arranged below the air heater; the outer side of the air pre-heater is connected with one side of an electrostatic precipitator, the other side of the electrostatic precipitator is connected with one side of a first flue gas cooler, and the other side of the first flue gas cooler is connected with the lower portion of one side of a desulfurizing tower; the upper portion of the other side of the desulfurizing tower is connected with the lower portion of one side of a wet chimney; a second flue gas cooler is connected between a cold water pipe and a hot water pipe through a cooler connecting pipe, and a first connecting pipe is arranged between the lower portion of the wet chimney and the lower portion of the desulfurizing tower; and a first anti-acid pump is arranged on the first connecting pipe. By means of the novel boiler flue gas waste heat recovery system, waste heat of exhausted flue gas is recycled, the exhaust flue gas temperature is reduced, the water consumption of the desulfurizing tower is saved, and the boiler efficiency is improved.
Description
Technical field
The present invention relates to a kind of residual neat recovering system is and in particular to a kind of flue gas waste heat recovery system
System.
Background technology
At present, flue gas is the main path that general energy consumption equipment wastes energy, such as boiler exhaust gas
Power consumption is about 15%, and the forming machine of other equipment such as dyeing, dehydrator and kiln
The main power consumption such as stove is all by fume emission.Generally existing in the use of present Industrial Boiler
Heat utilization ratio low, residual heat of exhaust flue gas temperature is too high, and pollution environmental gas in flue gas
The problems such as too high levels.Industrial Boiler is the main thermal power equipment of China at present, with me
Cross rapid economic development, energy resource consumption increasingly increases, the problem that urban air quality goes from bad to worse
All the more prominent.
Content of the invention
Goal of the invention：The invention aims to overcoming deficiency of the prior art, provide one
Plant smoke discharging residual heat to recycle, reduce exhaust gas temperature, save the water consumption of desulfurizing tower, improve pot
The efficiency of furnace, the New-type boiler flue gas waste heat recovery system of environmental protection.
Technical scheme：In order to solve above-mentioned technical problem, a kind of New-type boiler cigarette of the present invention
Gas residual neat recovering system, it includes boiler, is provided with flue in described boiler wall outer upper,
Described flue is provided with air preheater, side-lower is provided with warm braw in described air preheater
Device, is provided with pressure fan below described steam air heater, outside described air preheater and electrostatic precipitation
Device side is connected, and described electrostatic precipitator opposite side is connected with the first gas cooler side, institute
State the first gas cooler opposite side to be connected with desulfurizing tower one side lower part, described desulfurizing tower opposite side
Top is connected with Wet chimney one side lower part, sets between described steam air heater and the first gas cooler
There is cold and hot water coke slurry pipeline, described cold and hot water coke slurry pipeline is divided into cold water pipes and hot water pipeline,
Described hot water pipeline is provided with water pump, passes through cold between described cold water pipes and hot water pipeline
But device connecting pipe is connected with the second gas cooler, described cold and hot water coke slurry pipeline and cooler
Connecting pipe junction is provided with pipeline valve, sets between described Wet chimney bottom and desulfurizing tower bottom
There is the first connecting pipe, described first connecting pipe is provided with the first acid-proof pump, described de-
Sulfur tower tower wall outer lower portion is provided with the second connecting pipe to middle and upper part, in the described second connection
Pipeline is provided with the second acid-proof pump.
It is provided with booster fan between described electrostatic precipitator and the first gas cooler.
Described cold and hot water coke slurry pipeline one end is located at described first gas cooler top.
Beneficial effect：Compared with prior art, its remarkable advantage is the present invention：The present invention is overall
Structure setting rationally, connects steam air heater and the first gas cooler using cold and hot water coke slurry pipeline,
Cooler connecting tube road is recycled to be connected with cold and hot water coke slurry pipeline, thus connecting steam air heater and the
Two gas coolers, are circulated heat exchange, carry out heat exchange, using air preheater,
The burner hearth that hot-air sends 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, reduces flue-gas temperature,
Mist heat recovering, after supercooling, temperature drops to optimal desulfurization temperature and is passed through desulfurizing tower flue gas,
Not only desulfuration efficiency is high, and evaporated water is greatly reduced, resistance to using the first acid-proof pump and second
Sour pump, not only effectively improves the reclamation rate of acid, and can improve the safety in utilization of Wet chimney
Can, the system can improve boiler efficiency, energy-conserving and environment-protective, meet actual operation requirements.
Brief description
Fig. 1 is the structural representation of the present 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 New-type boiler flue gas waste heat recovery system of the present invention, it wraps
Include boiler 1, be provided with flue 2 in described boiler 1 furnace wall outer upper, on described flue 2
It is provided with air preheater 3, side-lower is provided with steam air heater 4 in described air preheater 3,
It is provided with pressure fan 5, described air preheater 3 outside and electrostatic precipitation below described steam air heater 4
Device 6 side is connected, described electrostatic precipitator 6 opposite side and the first gas cooler 7 side phase
Even, described first gas cooler 7 opposite side is connected with desulfurizing tower 8 one side lower part, described de-
Another upper lateral part of sulfur tower 8 is connected with Wet chimney 9 one side lower part, in described steam air heater 4 and first
It is provided with cold and hot water coke slurry pipeline, described cold and hot water coke slurry pipeline is divided into cold between gas cooler 7
Waterpipe 10 and hot water pipeline 11, are provided with water pump 12, in institute on described hot water pipeline 11
State and between cold water pipes 10 and hot water pipeline 11, pass through cooler connecting tube road 13 and the second cigarette
Gas Cooler 14 is connected, described cold and hot water coke slurry pipeline and cooler connecting tube road 13 junction
It is provided with pipeline valve 15, between described Wet chimney 9 bottom and desulfurizing tower 8 bottom, be provided with first
Connecting pipe 16, is provided with the first acid-proof pump 17, described on described first connecting pipe 16
Desulfurizing tower 8 tower wall outer lower portion is provided with the second connecting pipe 18, described to middle and upper part
Second connecting pipe 18 is provided with the second acid-proof pump 19；In described electrostatic precipitator 6 and first
It is provided with booster fan 20 between gas cooler 7；Described cold and hot water coke slurry pipeline one end is located at
Described first gas cooler 7 top.Overall structure setting of the present invention is reasonable, using hot and cold water
Exchange pipeline and connect steam air heater and the first gas cooler, recycle cooler connecting tube road with cold
Hot water exchanges pipeline and is connected, thus connecting steam air heater and the second gas cooler, is circulated heat
Amount exchanges, and carries out heat exchange, and using air preheater, the burner hearth that hot-air sends into boiler helps
Combustion, improves combustion position, using electrostatic precipitator, carries out flue gas ash removal, using the first flue gas
Cooler and the second gas cooler, reduce flue-gas temperature, Mist heat recovering, flue gas passes through
After cooling, temperature drops to optimal desulfurization temperature and is passed through desulfurizing tower, and not only desulfuration efficiency is high, and
Evaporated water is greatly reduced, and using the first acid-proof pump and the second acid-proof pump, not only effectively improves acid
Reclamation rate, and the usage safety performance of Wet chimney can be improved, the system can improve pot
The efficiency of furnace, energy-conserving and environment-protective, meet actual operation requirements.
The invention provides a kind of thinking and method, implement method and the way of this technical scheme
Footpath is a lot, and the above is only the preferred embodiment of the present invention it is noted that for this skill
For the those of ordinary skill in art field, under the premise without departing from the principles of the invention, acceptable
Make some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention,
In the present embodiment, all available prior art of clearly not each ingredient is realized.
Claims (3)
1. a kind of New-type boiler flue gas waste heat recovery system it is characterised in that：It includes boiler
(1), in described boiler (1) furnace wall, outer upper is provided with flue (2), in described flue (2)
It is provided with air preheater (3), side-lower is provided with warm braw in described air preheater (3)
Device (4), is provided with pressure fan (5), described air preheater below described steam air heater (4)
(3) it is connected with electrostatic precipitator (6) side outside, described electrostatic precipitator (6) is another
Side is connected with the first gas cooler (7) side, and described first gas cooler (7) is another
Side is connected with desulfurizing tower (8) side lower part, another upper lateral part of described desulfurizing tower (8) and wet cigarette
Chimney (9) one side lower part is connected, in described steam air heater (4) and the first gas cooler (7)
Between be provided with cold and hot water coke slurry pipeline, described cold and hot water coke slurry pipeline is divided into cold water pipes (10)
With hot water pipeline (11), water pump (12) is provided with described hot water pipeline (11), described
Between cold water pipes (10) and hot water pipeline (11) pass through cooler connecting tube road (13) with
Second gas cooler (14) is connected, described cold and hot water coke slurry pipeline and cooler connecting tube road
(13) junction is provided with pipeline valve (15), in described Wet chimney (9) bottom and desulfurizing tower (8)
It is provided with the first connecting pipe (16) between bottom, described first connecting pipe (16) sets
There is the first acid-proof pump (17), between described desulfurizing tower (8) tower wall outer lower portion is to middle and upper part
It is provided with the second connecting pipe (18), described second connecting pipe (18) is provided with second resistance to
Sour pump (19).
2. New-type boiler flue gas waste heat recovery system according to claim 1, its feature
It is：It is provided with supercharging between described electrostatic precipitator (6) and the first gas cooler (7)
Blower fan (20).
3. New-type boiler flue gas waste heat recovery system according to claim 1, its feature
It is：Described cold and hot water coke slurry pipeline one end is located at described first gas cooler (7) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510483742.9A CN106439780B (en) | 2015-08-10 | 2015-08-10 | A kind of New-type boiler flue gas waste heat recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510483742.9A CN106439780B (en) | 2015-08-10 | 2015-08-10 | A kind of New-type boiler flue gas waste heat recovery system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106439780A true CN106439780A (en) | 2017-02-22 |
| CN106439780B CN106439780B (en) | 2019-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510483742.9A Active CN106439780B (en) | 2015-08-10 | 2015-08-10 | A kind of New-type boiler flue gas waste heat recovery system |
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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 |
| CN204901734U (en) * | 2015-08-10 | 2015-12-23 | 江苏海德节能科技有限公司 | Novel waste heat of boiler flue gas recovery system |
-
2015
- 2015-08-10 CN CN201510483742.9A patent/CN106439780B/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 |
| CN204901734U (en) * | 2015-08-10 | 2015-12-23 | 江苏海德节能科技有限公司 | Novel waste heat of boiler flue gas recovery system |
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| Publication number | Publication date |
|---|---|
| CN106439780B (en) | 2019-05-28 |
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