CN205570543U - Hierarchical flue gas dust removal system of abrasionproof of coal -fired thermal power factory - Google Patents
Hierarchical flue gas dust removal system of abrasionproof of coal -fired thermal power factory Download PDFInfo
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- CN205570543U CN205570543U CN201620311742.0U CN201620311742U CN205570543U CN 205570543 U CN205570543 U CN 205570543U CN 201620311742 U CN201620311742 U CN 201620311742U CN 205570543 U CN205570543 U CN 205570543U
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- flue gas
- coal
- residual heat
- abrasionproof
- heat recovery
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Abstract
The utility model discloses a hierarchical flue gas dust removal system of abrasionproof of coal -fired thermal power factory has solved the serious problem of residual heat from flue gas device wearing and tearing. Including boiler air heater (1) and residual heat from flue gas device (3), boiler air heater (1) links together with residual heat from flue gas device (3) through electrostatic precipitator (2), and residual heat from flue gas device (3) link together with draught fan (5) through low temperature electrostatic precipitator (4). The utility model provides the continuous operating time of high residual heat from flue gas device, the effect of full play residual heat from flue gas device.
Description
Technical field
This utility model relates to a kind of coal-fired plant flue gas dust pelletizing system, particularly to the high-effective classifying flue gas dust collecting system of a kind of coal-fired station abrasionproof.
Background technology
At present, in coal-fired station, the flue gas discharged from boiler air preheater is directly entered flue gas waste heat recovery apparatus, sequentially enters in the equipment such as electrostatic precipitator, air-introduced machine the most again.Owing to containing bulky grain thing from the flue gas that boiler air preheater is discharged, these bulky grain things enter in flue gas waste heat recovery apparatus, pipeline therein etc. is caused serious wear damage, have influence on the properly functioning of flue gas waste heat recovery apparatus, how to reduce the wear problem of flue gas waste heat recovery apparatus, make flue gas waste heat recovery apparatus can give full play to dedusting and put forward effect, energy-saving and cost-reducing function, be current problem demanding prompt solution.
Summary of the invention
This utility model provides a kind of coal-fired station abrasionproof classification flue gas dust collecting system, solves the technical problem of flue gas waste heat recovery apparatus serious wear.
This utility model is to solve above technical problem by the following technical programs:
A kind of coal-fired station abrasionproof classification flue gas dust collecting system, including boiler air preheater and flue gas waste heat recovery apparatus, boiler air preheater is linked together with flue gas waste heat recovery apparatus by electrostatic precipitator, and flue gas waste heat recovery apparatus is linked together with air-introduced machine by low temperature electrostatic cleaner unit.
Flue gas is drawn by the fume side of boiler air preheater, first passes through an E field electrostatic dedusting, removes the dust of about 60%, including the bulky grain in flying dust；Enter flue gas waste heat recovery apparatus cooling after the pre-dedusting of flue gas, reduce flue gas volume flow；Finally enter low temperature electrostatic cleaner unit degree of depth dedusting.Dust contained flue gas concentration after pre-dedusting can be substantially reduced, and especially quality is big, particle diameter big, wear and tear big particulate matter, thus significantly reduces the abrasion of flue gas waste heat recovery apparatus.The minimizing of flue gas flying dust, makes the dust stratification degree on heat-exchanging tube bundle also reduce, also reduces SO simultaneously3Absorption on heat-exchanging tube bundle after condensation, alleviates the harm of cold end corrosion simultaneously.Flue gas after pre-dedusting and cooling carries out degree of depth dedusting through two-stage electrostatic precipitator, removes SO3And fine dust.After flue gas is lowered the temperature by waste-heat recovery device, flue dust declines than resistance, can not only improve the dust-collecting efficiency of two-stage electrostatic precipitator, and flue gas volume flow reduces, it is also possible to reduce the specific collection area of two-stage electrostatic precipitator, investment reduction；This abrasionproof high-efficiency dust removal system can be effectively improved the dust-collecting efficiency of electrostatic precipitator, reduces the flue gas abrasion to waste-heat recovery device, it is ensured that the normal table of flue gas waste heat recovery apparatus runs, and extends the life-span of flue gas waste heat recovery apparatus.
This utility model efficiently solves existing coal-burning power plant and uses the wear problem of flue gas waste heat recovery apparatus, improve the continuous operating time of flue gas waste heat recovery apparatus, given full play to the dust removing effects of flue gas waste heat recovery apparatus, for downstream process equipment energy-conservation, lower consumption, economizing on water creates favourable condition.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in detail:
A kind of coal-fired station abrasionproof classification flue gas dust collecting system, including boiler air preheater 1 and flue gas waste heat recovery apparatus 3, boiler air preheater 1 is linked together with flue gas waste heat recovery apparatus 3 by electrostatic precipitator 2, and flue gas waste heat recovery apparatus 3 is linked together with air-introduced machine 5 by low temperature electrostatic cleaner unit 4.
Claims (1)
1. coal-fired station's abrasionproof classification flue gas dust collecting system, including boiler air preheater (1) and flue gas waste heat recovery apparatus (3), it is characterized in that, boiler air preheater (1) is linked together with flue gas waste heat recovery apparatus (3) by electrostatic precipitator (2), and flue gas waste heat recovery apparatus (3) is linked together with air-introduced machine (5) by low temperature electrostatic cleaner unit (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620311742.0U CN205570543U (en) | 2016-04-14 | 2016-04-14 | Hierarchical flue gas dust removal system of abrasionproof of coal -fired thermal power factory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620311742.0U CN205570543U (en) | 2016-04-14 | 2016-04-14 | Hierarchical flue gas dust removal system of abrasionproof of coal -fired thermal power factory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205570543U true CN205570543U (en) | 2016-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201620311742.0U Active CN205570543U (en) | 2016-04-14 | 2016-04-14 | Hierarchical flue gas dust removal system of abrasionproof of coal -fired thermal power factory |
Country Status (1)
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| CN (1) | CN205570543U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973989A (en) * | 2019-04-04 | 2019-07-05 | 东北大学 | A kind of equipment improving low-level (stack-gas) economizer abrasion |
-
2016
- 2016-04-14 CN CN201620311742.0U patent/CN205570543U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973989A (en) * | 2019-04-04 | 2019-07-05 | 东北大学 | A kind of equipment improving low-level (stack-gas) economizer abrasion |
| CN109973989B (en) * | 2019-04-04 | 2020-04-24 | 东北大学 | Equipment for improving abrasion of low-temperature economizer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |