CN207815351U - A kind of reversible type refuse incineration exhaust-heating boiler superheater - Google Patents
A kind of reversible type refuse incineration exhaust-heating boiler superheater Download PDFInfo
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- CN207815351U CN207815351U CN201721924347.0U CN201721924347U CN207815351U CN 207815351 U CN207815351 U CN 207815351U CN 201721924347 U CN201721924347 U CN 201721924347U CN 207815351 U CN207815351 U CN 207815351U
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Abstract
The utility model is related to burning city domestic garbage fields, especially a kind of reversible type refuse incineration exhaust-heating boiler superheater is made of convective heat exchange tube bundles, reversible type super-heater exit case, reversible type superheater import header, reversible type superheater lower header and six control valve groups；When thermic load is low or the non-dust deposition of initial operating stage radiation channel, be incorporated to superheater system ensures steam being heated to rated temperature the reversible type refuse incineration exhaust-heating boiler superheater as a high temperature superheater part；For the reversible type refuse incineration exhaust-heating boiler superheater in thermic load height or operation a period of time radiation channel dust deposition, be incorporated to water-cooling system prevents main steam overtemperature and superheater high temperature corrosion as evaporation protector part reduction superheater entrance flue gas temperature.Utility model device can be converted between water-cooling system and superheating system, effectively solve the problems, such as that refuse incineration exhaust-heating boiler thermic load fluctuates the big and easy dust deposition of radiation channel.
Description
Technical field
The utility model is related to the rubbish that burning city domestic garbage field, especially thermic load fluctuate big, easy dust deposition
Rubbish waste gas of incineration boiler.
Background technology
There are following characteristics for refuse incineration exhaust-heating boiler：When thermic load is low or the non-dust deposition of radiation channel, entered
Hot device flue-gas temperature is relatively low, and it is larger that steam is heated to superheater area needed for rated temperature；When thermic load is high or radiation channel
It is higher into superheater flue-gas temperature when dust deposition, it is smaller that steam is heated to superheater area needed for rated temperature.Due to
Enter stove quantity of refuse variation, refuse thermal value rises year by year and the factors such as refuse thermal value seasonal variety, cause waste incineration waste heat pot
Stove thermic load is fluctuated in wide range.Domestic waste ash content is high, and the flying dust fusing point that flue gas carries after burning is low, waste incineration
There are different degrees of dust stratification or cokings for radiation channel after waste heat boiler runs a period of time, and when running, the fluctuation of improper or thermic load is big
When, dust deposition phenomenon is especially serious, reduces radiation channel caloric receptivity and causes entry into superheater flue-gas temperature compared on initial operating stage
Rise about 50~120 DEG C.Since thermic load fluctuation is big and the objective reality of dust deposition phenomenon, the waste heat boiler of conventional design at present
Easily there are the easy overtemperature of main steam, water sprays greatly, high temperature superheater inlet flue gas temperature high corrosion speed is fast, it is specified to be unable to reach for a long time
Vapor (steam) temperature and the short equal series of problems of safe and continuous run time.
Invention content
The purpose of the utility model is to overcome above-mentioned the deficiencies in the prior art, propose a kind of reversible type waste incineration waste heat
Boiler superheater by convective heat exchange tube bundles, reversible type super-heater exit case, reversible type superheater import header, can turn
It changes formula superheater lower header and six control valve groups is constituted.The reversible type refuse incineration exhaust-heating boiler superheater is in thermic load
When the non-dust deposition of low or initial operating stage radiation channel, being incorporated to superheater system ensures as a high temperature superheater part by steam
It is heated to rated temperature.The reversible type refuse incineration exhaust-heating boiler superheater is radiated in thermic load height or operation a period of time
When the dust deposition of channel, be incorporated to water-cooling system prevents main steaming as evaporation protector part reduction superheater entrance flue gas temperature
Vapour overtemperature and superheater high temperature corrosion, it is ensured that the continuous safe operation of equipment.The convective heat exchange tube bundles, reversible type superheater into
Mouth header, reversible type super-heater exit case, reversible type superheater lower header design temperature are by high temperature superheater design temperature
Degree is chosen, and design pressure is chosen by evaporation protector design pressure.Convective heat exchange tube bundles four arrange totally in flue gas flow direction direction, lower part
It is welded on reversible type superheater lower header, top is respectively welded at reversible type superheater import header and reversible type overheat
Device outlet header.
Further, six control valve groups are control valve group I, control valve group II, control valve group III, control valve respectively
Group IV, control valve group V, control valve group VI form.Reversible type refuse incineration exhaust-heating boiler superheater passes through six valve groups
It opens and closes to realize the conversion between water-cooling system and superheating system.Each control valve group by electric check valve, hand stop valve and
Check valve set is at wherein control valve group I, control valve group II, control valve group III control superheated steam flow, control valve group IV, control
Valve group V, the control saturated water of control valve group VI and steam water interface flow processed.To prevent maloperation, control valve group I in this system,
Control valve group II and control valve group III, control valve group IV, control valve group V, VI open/close states of control valve group are chain each other.Due to
The valve actuator response time, all electric check valve out codes postponed to execute for 30 seconds, to ensure heat convection there are deviation
Tube bank has working medium always, prevents dry accident.A check-valves is arranged to protect electric check valve to exist in each control valve group
It is hit from vapour when conversion or water attack, while effectively avoiding steam or the flowing of carbonated drink upstream direction in transfer process.
When being converted to superheating system work, convective heat exchange tube bundles are two-tube circle fair current model.It is exported from high temperature superheater
The superheated steam of header enters reversible type superheater import header by connecting tube, then in turn through first two columns heat convection
Enter reversible type super-heater exit case after tube bank, reversible type superheater lower header, next two columns convective heat exchange tube bundles, finally
Enter collection vapour header by connecting tube.Convective heat exchange tube bundles increase superheater area after being converted to superheating system, it is ensured that rubbish is burnt
Waste heat boiler is burnt in the low dust deposition non-with initial operating stage radiation channel of thermic load, and steam is heated to rated temperature.
When being converted to water-cooling system work, convective heat exchange tube bundles are that four pipeloops intersect flow model.Drum bottom saturated water warp
It crosses downcomer and enters reversible type superheater lower header, subsequently into four row convective heat exchange tube bundles, be saturated in convective heat exchange tube bundles
It is transformed into steam water interface after water heat absorption flue gas heat and enters reversible type super-heater exit case and convertible by density contrast
Formula superheater import header, then enters drum by connecting tube.Convective heat exchange tube bundles increase politics and law after being converted to water-cooling system
Protector area, it is ensured that refuse incineration exhaust-heating boiler increases in thermic load height and operation a period of time radiation channel dust deposition
Big evaporation protector caloric receptivity, is lowered into high temperature superheater flue-gas temperature, avoids main steam overtemperature and superheater high temperature corrosion.
Utility model device can be converted between water-cooling system and superheating system, effectively solve refuse incineration exhaust-heating boiler
Thermic load fluctuates the big and easy dust deposition problem of radiation channel.Utility model device is adjusted by convective heat exchange tube bundles conversion
Section, optimization boiler evaporating heating surface and overheat heating surface ratio, to reduce between refuse incineration exhaust-heating boiler and burning at the beginning of workshop
Phase cost of investment increases and decreases heating surface area type technological transformation with the later stage is prevented.Utility model device conversion can not blowing out carry out, can really
Protect refuse incineration exhaust-heating boiler long-time safe operation.
Description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is reversible type refuse incineration exhaust-heating boiler superheater structural schematic diagram.
Fig. 2 is reversible type refuse incineration exhaust-heating boiler superheater process flow chart.
1. convective heat exchange tube bundles in Fig. 1,2. reversible type superheater import headers, 3. reversible type superheater outlet collection
Case, 4. reversible type superheater lower headers, 5. high temperature superheaters, 6. high temperature superheater outlet headers, 7. high temperature superheater imports
Header, 8. third channels, 9. evaporation protectors, 10. horizontal channels.
18. drum in Fig. 2,19. control valve groups I, 20. control valve groups II, 21. control valve groups III, 22. control valve groups IV,
23. control valve group V, 24. control valve groups VI.
Specific implementation mode
A kind of reversible type refuse incineration exhaust-heating boiler superheater, by convective heat exchange tube bundles, reversible type superheater outlet
Header, reversible type superheater import header, reversible type superheater lower header and six control valve groups are constituted.It is described convertible
Formula refuse incineration exhaust-heating boiler superheater is incorporated to superheater system when thermic load is low or the non-dust deposition of initial operating stage radiation channel
System ensures steam being heated to rated temperature as a high temperature superheater part.The reversible type refuse incineration exhaust-heating boiler mistake
Hot device is incorporated to water-cooling system as evaporation protector one in thermic load height or operation a period of time radiation channel dust deposition
Reduction superheater entrance flue gas temperature is divided to prevent main steam overtemperature and superheater high temperature corrosion, it is ensured that the continuous safe operation of equipment.
The convective heat exchange tube bundles, reversible type superheater import header, reversible type super-heater exit case, reversible type superheater
Lower header design temperature is chosen by high temperature superheater design temperature, and design pressure is chosen by evaporation protector design pressure.Convection current
Heat-exchanging tube bundle four arranges totally in flue gas flow direction direction, and for lower weld in reversible type superheater lower header, top is respectively welded at can
Change type superheater import header and reversible type super-heater exit case.
Further, six control valve groups are control valve group I, control valve group II, control valve group III, control valve respectively
Group IV, control valve group V, control valve group VI form.Reversible type refuse incineration exhaust-heating boiler superheater passes through six valve groups
It opens and closes to realize the conversion between water-cooling system and superheating system.Each control valve group by electric check valve, hand stop valve and
Check valve set is at wherein control valve group I, control valve group II, control valve group III control superheated steam flow, control valve group IV, control
Valve group V, the control saturated water of control valve group VI and steam water interface flow processed.To prevent maloperation, control valve group I in this system,
Control valve group II and control valve group III, control valve group IV, control valve group V, VI open/close states of control valve group are chain each other.Due to
The valve actuator response time, all electric check valve out codes postponed to execute for 30 seconds, to ensure heat convection there are deviation
Tube bank has working medium always, prevents dry accident.A check-valves is arranged to protect electric check valve to exist in each control valve group
It is hit from vapour when conversion or water attack, while effectively avoiding steam or the flowing of carbonated drink upstream direction in transfer process.
When being converted to superheating system work, convective heat exchange tube bundles are two-tube circle fair current model.It is exported from high temperature superheater
The superheated steam of header enters reversible type superheater import header by connecting tube, then in turn through first two columns heat convection
Enter reversible type super-heater exit case after tube bank, reversible type superheater lower header, next two columns convective heat exchange tube bundles, finally
Enter collection vapour header by connecting tube.Convective heat exchange tube bundles increase superheater area after being converted to superheating system, it is ensured that rubbish is burnt
Waste heat boiler is burnt in the low dust deposition non-with initial operating stage radiation channel of thermic load, and steam is heated to rated temperature.
When being converted to water-cooling system work, convective heat exchange tube bundles are that four pipeloops intersect flow model.Drum bottom saturated water warp
It crosses downcomer and enters reversible type superheater lower header, subsequently into four row convective heat exchange tube bundles, be saturated in convective heat exchange tube bundles
It is transformed into steam water interface after water heat absorption flue gas heat and enters reversible type super-heater exit case and convertible by density contrast
Formula superheater import header, then enters drum by connecting tube.Convective heat exchange tube bundles increase politics and law after being converted to water-cooling system
Protector area, it is ensured that refuse incineration exhaust-heating boiler increases in thermic load height and operation a period of time radiation channel dust deposition
Big evaporation protector caloric receptivity, is lowered into high temperature superheater flue-gas temperature, avoids main steam overtemperature and superheater high temperature corrosion.
In Fig. 1, convective heat exchange tube bundles 1, reversible type superheater import header 2, reversible type super-heater exit case
3, reversible type superheater lower header 4 constitutes reversible type refuse incineration exhaust-heating boiler superheater main body.High-temperature flue gas passes through
Triple channel 8 enters horizontal channel 10, then passes sequentially through evaporation protector 9, convective heat exchange tube bundles 1 and high temperature superheater 5.
In fig. 2, when being converted to superheating system work, opening controlling valve group I 19 and control valve group are sent out by operating personnel
Two electric check valves instruction in II 20, due to chain logic each other, control valve group III 21, control valve group IV 22, control valve group
V 23, four electric check valves obtain out code simultaneously in control valve group VI 24 (delay executes for 30 seconds).From hyperthermia and superheating
The superheated steam of device outlet header enters reversible type superheater import header by connecting tube, then in turn through first two columns pair
Enter reversible type superheater outlet collection after flowing heat-exchanging tube bundle, reversible type superheater lower header, next two columns convective heat exchange tube bundles
Case enters collection vapour header finally by connecting tube.When being converted to water-cooling system work, closing control valve group is sent out by operating personnel
I and control valve group II in two electric check valve out codes (delay executes for 30 seconds), due to chain logic each other, control valve group
III, four electric check valves obtain open command simultaneously in control valve group IV, control valve group V, control valve group VI.Drum bottom
Saturated water enters reversible type superheater lower header by downcomer, subsequently into four row convective heat exchange tube bundles, heat convection pipe
It is transformed into steam water interface after saturated water heat absorption flue gas heat in beam and enters reversible type super-heater exit case by density contrast
With reversible type superheater import header, drum 18 is then entered by connecting tube.
In conclusion the characteristics of the utility model reversible type refuse incineration exhaust-heating boiler superheater, is including at least following several
Point：
1, it can be converted between water-cooling system and superheating system in not blowing out.
2, it can effectively solve the problems, such as that refuse incineration exhaust-heating boiler thermic load fluctuates the big and easy dust deposition of radiation channel.
3, main steam overtemperature can effectively be solved, rated value is not achieved in main steam temperature and caused by flue-gas temperature is excessively high
Superheater High Temperature Corrosion.
4, it can guarantee that the front and back phase high temperature superheater inlet flue gas temperature of operation is almost the same, it is ensured that when refuse incineration exhaust-heating boiler is long
Between safe operation.
5, it reduces workshop initial investment cost between refuse incineration exhaust-heating boiler and burning and prevents later stage increase and decrease heating surface area
Type technological transformation.
6, control valve group I, control valve group II and control valve group III, control valve group IV, control valve group V, control valve group VI open
Closed state is chain each other, effectively prevent maloperation.
7, electric check valve out code postpones to execute for 30 seconds, eliminates valve actuator response time deviation, ensures convection current
Heat-exchanging tube bundle has working medium always, prevents dry accident.
8, a check-valves is arranged to protect electric check valve to be hit from vapour in conversion or water attack, together in each control valve group
Shi Youxiao avoids steam or the flowing of carbonated drink upstream direction in transfer process.
The utility model is high heating value domestic waste fire grate drop wall and the section of burner hearth effective cooling and UTILIZATION OF VESIDUAL HEAT IN
It can device.It is divided into the right two parts of the left stove of stove, water cooling drop wall is incorporated to waste heat boiler natural cycle system, passes through vapour in membrane wall pipe
Device of working medium cools down, and drop wall surface temperature is made to be cooled to 450~550 DEG C, and water cooling drop wall unit area heat exchange power is 15~
25KW/m2, can effectively reduce furnace load and slagging prevention.Cooling working medium is Natural Circulation simultaneously, is not necessarily to additional energy.
Claims (3)
1. a kind of reversible type refuse incineration exhaust-heating boiler superheater, which is characterized in that by convective heat exchange tube bundles, reversible type mistake
Hot device outlet header, reversible type superheater import header, reversible type superheater lower header and six control valve groups are constituted；Institute
Reversible type refuse incineration exhaust-heating boiler superheater is stated when thermic load is low or the non-dust deposition of initial operating stage radiation channel, is incorporated to
Superheater system ensures steam being heated to rated temperature as a high temperature superheater part；More than the reversible type waste incineration
Heat boiler superheater is incorporated to water-cooling system and is protected as evaporation in thermic load height or operation a period of time radiation channel dust deposition
A shield device part, which reduces superheater entrance flue gas temperature, prevents main steam overtemperature and superheater high temperature corrosion, it is ensured that equipment is continuously pacified
Row for the national games；The convective heat exchange tube bundles in flue gas flow direction direction totally four row, lower weld in reversible type superheater lower header, on
Portion is respectively welded at reversible type superheater import header and reversible type super-heater exit case；
Six control valve groups are control valve group I, control valve group II, control valve group III, control valve group IV, control valve group respectively
V, control valve group VI forms；Reversible type refuse incineration exhaust-heating boiler superheater realizes water by the keying of six valve groups
Conversion between cooling system and superheating system；Each control valve group by electric check valve, hand stop valve and check valve set at,
Middle control valve group I, control valve group II, control valve group III control superheated steam flow, control valve group IV, control valve group V, control
Valve group VI controls saturated water and steam water interface flow.
2. a kind of reversible type refuse incineration exhaust-heating boiler superheater according to claim 1, which is characterized in that the control
Valve group I, control valve group II, control valve group III, control valve group IV, control valve group V and VI open/close states of control valve group processed connect each other
Lock；All electric check valve out code delays execute.
3. a kind of reversible type refuse incineration exhaust-heating boiler superheater according to claim 1, which is characterized in that each control
A check-valves is arranged to protect electric check valve to be hit from vapour in conversion or water attack in valve group processed, while avoiding in transfer process
Steam or the flowing of carbonated drink upstream direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721924347.0U CN207815351U (en) | 2017-12-30 | 2017-12-30 | A kind of reversible type refuse incineration exhaust-heating boiler superheater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721924347.0U CN207815351U (en) | 2017-12-30 | 2017-12-30 | A kind of reversible type refuse incineration exhaust-heating boiler superheater |
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| CN207815351U true CN207815351U (en) | 2018-09-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006664A (en) * | 2017-12-30 | 2018-05-08 | 上海康恒环境股份有限公司 | A kind of reversible type refuse incineration exhaust-heating boiler superheater |
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2017
- 2017-12-30 CN CN201721924347.0U patent/CN207815351U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006664A (en) * | 2017-12-30 | 2018-05-08 | 上海康恒环境股份有限公司 | A kind of reversible type refuse incineration exhaust-heating boiler superheater |
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