CN114060794A - Evaporator structure of waste incineration boiler - Google Patents
Evaporator structure of waste incineration boiler Download PDFInfo
- Publication number
- CN114060794A CN114060794A CN202111425351.3A CN202111425351A CN114060794A CN 114060794 A CN114060794 A CN 114060794A CN 202111425351 A CN202111425351 A CN 202111425351A CN 114060794 A CN114060794 A CN 114060794A
- Authority
- CN
- China
- Prior art keywords
- header
- evaporator
- water
- cooled wall
- waste incineration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004056 waste incineration Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 17
- 239000003546 flue gas Substances 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/16—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged otherwise than in the boiler furnace, fire tubes, or flue ways
- F22D1/18—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged otherwise than in the boiler furnace, fire tubes, or flue ways and heated indirectly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M5/00—Casings; Linings; Walls
- F23M5/08—Cooling thereof; Tube walls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/007—Auxiliary supports for elements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
Abstract
The invention relates to the technical field of waste incineration boilers, in particular to a waste incineration boiler evaporator structure which can effectively solve the problems of expansion difference and height difference between an evaporator and a water-cooled wall, has a compact and reasonable structure and ensures boiler efficiency and comprises the water-cooled wall and an evaporator tube bundle, wherein the upper end of the water-cooled wall is connected with an upper water-cooled wall header and the lower end of the water-cooled wall is connected with a lower water-cooled wall header, the upper end of the evaporator tube bundle is connected with an upper evaporator header and the lower end of the evaporator tube bundle is connected with a lower evaporator header, and the waste incineration boiler evaporator structure is characterized in that an independent water supply header is arranged below the front part or the rear part of the evaporator tube bundle, the top of the water supply header is connected with the bottom of the lower water-cooled wall header through a header hanger plate, the water supply header is connected with the lower evaporator header through a plurality of elbow tubes, and the height difference between the lower evaporator header and the lower water-cooled wall header is less than 400 mm.
Description
Technical Field
The invention relates to the technical field of waste incineration boilers, in particular to a waste incineration boiler evaporator structure.
Background
In the existing waste incineration boiler system, a front evaporator is positioned in front of a high-temperature superheater and is used for reducing the temperature of flue gas entering the high-temperature superheater, slowing down the high-temperature corrosion speed of the high-temperature superheater and prolonging the service life of the high-temperature superheater; the rear evaporator is positioned behind the low-temperature superheater and used for reducing the temperature of the flue gas entering the economizer so as to ensure that the temperature of the working medium in the economizer is lower than the saturation temperature and prevent the economizer from generating steam plug and pipe explosion, so that the evaporator is an integral part of the waste incineration boiler.
In the horizontal waste incineration heat boiler, an evaporator is arranged in a horizontal flue, the evaporator is in a tube panel structure, a concentration tube is arranged at the upper part and the lower part, a tube bundle is arranged in the middle, the evaporator supplies water through a water-cooled wall lower header of the horizontal flue, in order to avoid the expansion difference between the evaporator and the water-cooled wall, the lower header of the water-cooled wall and the concentration tube at the lower part of the evaporator have the height difference of about 1.3m, and the lower header and the concentration tube are connected by adopting a bent tube, so a flue gas corridor is arranged at the lower part of a heating surface of the horizontal flue, and a flue gas baffle is required to be arranged to ensure that the flue gas exchanges heat with the evaporator and the heating surface. Because here flue gas temperature is higher, generally 400~650 ℃, the flue gas baffle material needs high temperature resistant, adopts 06Cr25Ni20 and 06Cr18Ni11Ti, and the cost is higher on the one hand, and on the other hand because the flue gas baffle lacks the cooling, the flue gas baffle is yielding to drop, forms the flue gas corridor, influences the heat transfer effect, leads to exhaust gas temperature to rise, influences boiler efficiency.
Disclosure of Invention
The invention provides a waste incineration boiler evaporator structure, which can effectively solve the problems of expansion difference and height difference between an evaporator and a water-cooled wall, has a compact and reasonable structure and ensures boiler efficiency.
The technical scheme is as follows: the utility model provides a msw incineration boiler evaporator structure, its includes water-cooled wall and evaporator tube bank, water-cooled wall upper end is connected water-cooled wall and is gone up collection box, lower extreme connection water-cooled wall collection box down, evaporator tube bank upper end is connected evaporator and is gone up collection box, lower extreme connection evaporator and is gone up collection box, its characterized in that, evaporator tube bank front portion below or rear portion below are provided with independent feedwater collection box, feedwater collection box top through the collection case hanger plate with collection box bottom under the water-cooled wall is connected, feedwater collection box with evaporator is down the collection box and is connected through many bends, the evaporator is down the collection box with the difference in height between the collection box is less than 400mm under the water-cooled wall.
It is further characterized in that the multi-elbow pipe is a double-L-shaped elbow pipe;
the evaporator tube bundle is provided with an anti-abrasion tile towards one end of the flue gas flowing direction;
a shake stopping mechanism is arranged between two adjacent evaporator lower headers at the same height and between the evaporator lower headers and the water wall lower headers, and comprises two L-shaped plates, wherein one L-shaped plate is provided with a limiting groove, and the other L-shaped plate is inserted into the limiting groove;
and a lifting lug is arranged on the header on the water-cooled wall.
After the invention is adopted, the evaporator uses the independent water supply header, the evaporator can be ensured to be fully hydrophobic, the height difference between the water-cooled wall lower header and the evaporator lower header is reduced, the flue gas baffle is saved, the manufacturing cost and the subsequent maintenance cost are reduced, a flue gas corridor can not be caused at the position, the structure is compact and reasonable, and the boiler efficiency is ensured.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of FIG. 1;
fig. 3 is a bottom view of fig. 1.
Detailed Description
Referring to fig. 1, 2 and 3, the evaporator structure of the waste incineration boiler comprises a water-cooled wall 1 and an evaporator tube bundle 2, wherein the upper end of the water-cooled wall 1 is connected with an upper water-cooled wall header 3, the lower end of the water-cooled wall 1 is connected with a lower water-cooled wall header 4, the upper end of the evaporator tube bundle 2 is connected with an upper evaporator header 5, the lower end of the evaporator tube bundle 2 is connected with a lower evaporator header 6, an independent water supply header 7 is arranged below the front part or the rear part of the evaporator tube bundle 2, the top of the water supply header 7 is connected with the bottom of the lower water-cooled wall header 4 through a header hanger plate 8, the water supply header 7 is connected with the lower evaporator header 6 through a multi-elbow pipe 9, the multi-elbow pipe 9 specifically adopts a double-L-shaped elbow pipe, expansion can be effectively absorbed, and the height difference between the lower evaporator header 6 and the lower water-cooled wall header 4 is 390 mm.
Towards the one end of flue gas flow direction, install the abrasionproof tile 10 on the evaporimeter tube bank 2, can meet the protective effect on the smoke face again, prevent to be worn and torn by the flue gas.
Between the header 6 under two adjacent evaporimeters of same height, all be provided with between header 6 under the evaporimeter and the water-cooling wall header 4 and only shake mechanism 11, only shake mechanism 11 and include two L shaped plates, have seted up the spacing groove on one of them L shaped plate, and another L shaped plate inserts the spacing inslot, through the position of spacing groove restriction L shaped plate to it is spacing to realize the position between the header, prevents that the tube bank from appearing rocking.
The header 3 on the water wall is provided with a lifting lug 12 for fixing the superheater.
The invention ensures that the evaporator can be fully hydrophobic; the height of the water wall of the horizontal flue is reduced, and the manufacturing cost is reduced; the height difference between the evaporator lower header and the horizontal flue side wall water-cooled wall lower header is reduced, a flue gas baffle is omitted, and the manufacturing cost and the subsequent maintenance cost are reduced.
Claims (3)
1. A waste incineration boiler evaporator structure comprises a water-cooled wall and an evaporator tube bundle, wherein the upper end of the water-cooled wall is connected with an upper water-cooled wall header, the lower end of the water-cooled wall is connected with a lower water-cooled wall header, the upper end of the evaporator tube bundle is connected with an upper evaporator header, and the lower end of the evaporator tube bundle is connected with a lower evaporator header, and the waste incineration boiler evaporator structure is characterized in that an independent water supply header is arranged below the front part or the rear part of the evaporator tube bundle, the top of the water supply header is connected with the bottom of the lower water-cooled wall header through a header hanger plate, the water supply header is connected with the lower evaporator header through a double L-shaped bent pipe, and the height difference between the lower evaporator header and the lower water-cooled wall header is less than 400 mm; towards the one end of flue gas flow direction, install the abrasionproof tile on the evaporimeter tube bank.
2. The waste incineration boiler evaporator structure according to claim 1, wherein a sloshing stopping mechanism is arranged between two adjacent evaporator lower headers at the same height and between the evaporator lower headers and the water wall lower header, and the sloshing stopping mechanism comprises two L-shaped plates, one of the L-shaped plates is provided with a limiting groove, and the other L-shaped plate is inserted into the limiting groove.
3. The waste incineration boiler evaporator structure of claim 1, wherein the water-cooled wall header is provided with a lifting lug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111425351.3A CN114060794A (en) | 2021-11-27 | 2021-11-27 | Evaporator structure of waste incineration boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111425351.3A CN114060794A (en) | 2021-11-27 | 2021-11-27 | Evaporator structure of waste incineration boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114060794A true CN114060794A (en) | 2022-02-18 |
Family
ID=80276779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111425351.3A Pending CN114060794A (en) | 2021-11-27 | 2021-11-27 | Evaporator structure of waste incineration boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114060794A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103013580A (en) * | 2012-12-11 | 2013-04-03 | 中国东方电气集团有限公司 | Integrated bunch type radiant boiler and preheating boiler mixed heat recovery device |
| CN210832032U (en) * | 2019-09-30 | 2020-06-23 | 无锡华光锅炉股份有限公司 | Novel waste incineration exhaust-heat boiler economizer structure |
| CN111637441A (en) * | 2020-06-28 | 2020-09-08 | 无锡华光环保能源集团股份有限公司 | Novel arrangement structure of water supply system of evaporator of high-parameter garbage waste heat furnace |
| CN212408614U (en) * | 2020-03-31 | 2021-01-26 | 无锡华光环保能源集团股份有限公司 | Garbage boiler afterbody side wall lower header arrangement structure |
| CN213542491U (en) * | 2020-09-08 | 2021-06-25 | 上海康恒环境股份有限公司 | Screen type evaporator system of waste incineration waste heat boiler |
| CN213777662U (en) * | 2020-11-14 | 2021-07-23 | 仲伟军 | Steam generator of gas |
-
2021
- 2021-11-27 CN CN202111425351.3A patent/CN114060794A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103013580A (en) * | 2012-12-11 | 2013-04-03 | 中国东方电气集团有限公司 | Integrated bunch type radiant boiler and preheating boiler mixed heat recovery device |
| CN210832032U (en) * | 2019-09-30 | 2020-06-23 | 无锡华光锅炉股份有限公司 | Novel waste incineration exhaust-heat boiler economizer structure |
| CN212408614U (en) * | 2020-03-31 | 2021-01-26 | 无锡华光环保能源集团股份有限公司 | Garbage boiler afterbody side wall lower header arrangement structure |
| CN111637441A (en) * | 2020-06-28 | 2020-09-08 | 无锡华光环保能源集团股份有限公司 | Novel arrangement structure of water supply system of evaporator of high-parameter garbage waste heat furnace |
| CN213542491U (en) * | 2020-09-08 | 2021-06-25 | 上海康恒环境股份有限公司 | Screen type evaporator system of waste incineration waste heat boiler |
| CN213777662U (en) * | 2020-11-14 | 2021-07-23 | 仲伟军 | Steam generator of gas |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220218 |