CN212108336U - High-efficient clean steam island - Google Patents
High-efficient clean steam island Download PDFInfo
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- CN212108336U CN212108336U CN202020558644.3U CN202020558644U CN212108336U CN 212108336 U CN212108336 U CN 212108336U CN 202020558644 U CN202020558644 U CN 202020558644U CN 212108336 U CN212108336 U CN 212108336U
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- heat exchanger
- temperature
- hearth
- steam island
- flue
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Abstract
The utility model relates to a high-efficiency clean steam island, which solves the problems of complex system, high energy consumption, high equipment investment and operation cost of the existing steam island, and adopts the technical scheme that the steam island comprises a furnace chamber and a burner arranged on the furnace chamber, wherein the furnace chamber is sequentially communicated with a screen heat exchanger, a superheater, a high-temperature economizer, an SCR denitration reactor, a circulating fluidized bed reaction tower, a high-temperature dust remover, an induced draft fan and a chimney through a flue; the blower is connected with the burner. The utility model discloses the system is simple, equipment investment and running cost are low, energy saving and consumption reduction, friendly to the environment, area are little.
Description
Technical Field
The utility model relates to a steam generator, specific clean steam island of high efficiency that says so.
Background
The steam generation island has been in history for more than 100 years, mainly comprises a boiler, an auxiliary machine, a control system and an environment-friendly device, and is used for converting fossil energy in fossil fuel into heat energy taking water and steam as main working medium carriers so as to provide the heat energy for downstream power generation, mass transfer and heat transfer and the like.
The conventional steam generation island is developed from a combustion device and a heat exchange device, and has the characteristics of complex equipment, long flow, narrow adaptability, low system stability, high energy consumption, large occupied area, environmental pollution and the like.
Disclosure of Invention
The utility model aims at solving the technical problem and providing a system is simple, equipment investment and running cost are low, energy saving and consumption reduction, environment friendly, the little high-efficient clean steam island of area.
The technical scheme includes that the device comprises a hearth and a burner arranged on the hearth, wherein the hearth is sequentially communicated with a screen heat exchanger, a superheater, a high-temperature economizer, an SCR denitration reactor, a circulating fluidized bed reaction tower, a high-temperature dust remover, an induced draft fan and a chimney through a flue; the blower is connected with the burner.
A high-temperature air heat exchanger is arranged in a flue between the hearth and the screen type heat exchanger, a low-temperature air heat exchanger is arranged in a flue between the SCR denitration reactor and the circulating fluidized bed reaction tower, and the air blower is connected with a combustor through the low-temperature air heat exchanger and the high-temperature air heat exchanger.
And a tail heat exchanger is also connected between the high-temperature dust remover and the induced draft fan.
The high-temperature dust remover is a ceramic tube dust remover, a sintered metal mesh dust remover or an Taimian dust remover.
Has the advantages that:
1. the SCR denitration reactor is arranged behind the high-temperature economizer for denitration, the stable circulating fluidized bed reaction tower is arranged for desulfuration, and the high-temperature dust remover is arranged for dust removal, so that sulfur dioxide, nitrogen oxide and dust are removed from the flue gas at a high-temperature stage, the high-temperature desulfuration and denitration effect is good, and the nitrogen oxide, the sulfur oxide and particulate matters can be reduced to 10mg/Nm3(dry, 6% O)2) The following are environmentally friendly.
2. The device can reduce the corrosion problem of equipment after desulfurization, denitrification and dust removal of flue gas, the temperature of the flue gas can be greatly reduced to 50 ℃ at least, the heat recovery rate can be improved, the boiler efficiency can be improved by 2-3% compared with that of a conventional steam generation island device, and the subsequent carbon dioxide capture is facilitated.
3. The air that lets in the combustor can rise to more than 800 ℃ through low temperature air heat exchanger and high temperature air heat exchanger and flue gas heat transfer, improves combustion efficiency, furthest converts fossil fuel's chemical energy into heat energy, reduces the production of flying dust simultaneously to various fuel can be used to the combustible, if: bituminous coal, lignite, anthracite, low heating value fuel (600 + 2000Kca l/kg solid fuel or 600 + 2000Kca l/m)3Gas), the application range of the fuel is enlarged, and the reduction of the operation cost is facilitated.
4. The utility model discloses system is simple, integrate the degree height, area is little, equipment investment and running cost are low, friendly to the environment.
Drawings
Fig. 1 is a system diagram of the present invention.
The system comprises a combustor 1, a hearth 2, a high-temperature air heat exchanger 3, a screen heat exchanger 4, a steam drum 5, a superheater 6, a high-temperature economizer 7, an SCR denitration reactor 8, a low-temperature air preheater 9, a circulating fluidized bed reaction tower 10, a high-temperature dust remover 11, a tail heat exchanger 12, an induced draft fan 13, an air blower 14 and a chimney 15.
Detailed Description
The invention will be further explained with reference to the drawings:
referring to fig. 1, the utility model comprises a hearth 2 and a burner 1 arranged on the hearth, wherein the hearth 2 is communicated with a high-temperature air heat exchanger 3, a screen heat exchanger 4, a superheater 6, a high-temperature economizer 7, an SCR denitration reactor 8, a low-temperature air heat exchanger 9, a circulating fluidized bed reaction tower 10, a high-temperature dust remover 11, a tail heat exchanger 12, an induced draft fan 13 and a chimney 15 in sequence through a flue; the blower is connected with the burner.
The high temperature dust collector 11 may be a ceramic tube dust collector, a sintered metal mesh dust collector, or an tai-cotton dust collector.
The process comprises the following steps:
in the air flow, fresh air is sent to the low-temperature air preheater 9 through the blower 14 to indirectly exchange heat with the flue gas and raise the temperature to 200-400 ℃, then is subjected to heat exchange with the flue gas again through the high-temperature air preheater 3 to raise the temperature to be preheated to above 800 ℃, and then is subjected to combustion-supporting combustion in the hearth 2 under the combustor 1, wherein the used fuel can be coal powder, coal water slurry, oil or gas and the like.
The high-temperature flue gas generated after low-nitrogen combustion in a hearth is firstly cooled to 900-.
Claims (4)
1. A high-efficiency clean steam island comprises a hearth and a burner arranged on the hearth, and is characterized in that the hearth is sequentially communicated with a screen heat exchanger, a superheater, a high-temperature economizer, an SCR denitration reactor, a circulating fluidized bed reaction tower, a high-temperature dust remover, an induced draft fan and a chimney through a flue; the blower is connected with the burner.
2. The high-efficiency cleaning steam island of claim 1, wherein a high-temperature air heat exchanger is arranged in a flue between the hearth and the screen heat exchanger, a low-temperature air heat exchanger is arranged in a flue between the SCR denitration reactor and the circulating fluidized bed reaction tower, and the blower is connected with the combustor through the low-temperature air heat exchanger and the high-temperature air heat exchanger.
3. The high-efficiency cleaning steam island according to claim 1 or 2, wherein a tail heat exchanger is further connected between the high-temperature dust remover and the induced draft fan.
4. The high efficiency cleaning steam island of claim 1 or 2, wherein the high temperature precipitator is a ceramic tube precipitator, a sintered metal mesh precipitator, or an tai-cotton precipitator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020558644.3U CN212108336U (en) | 2020-04-15 | 2020-04-15 | High-efficient clean steam island |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020558644.3U CN212108336U (en) | 2020-04-15 | 2020-04-15 | High-efficient clean steam island |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212108336U true CN212108336U (en) | 2020-12-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020558644.3U Active CN212108336U (en) | 2020-04-15 | 2020-04-15 | High-efficient clean steam island |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212108336U (en) |
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2020
- 2020-04-15 CN CN202020558644.3U patent/CN212108336U/en active Active
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