CN207486843U - Supercritical CO2 boiler furnace combustion-protection belt structure - Google Patents
Supercritical CO2 boiler furnace combustion-protection belt structure Download PDFInfo
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- CN207486843U CN207486843U CN201721060747.1U CN201721060747U CN207486843U CN 207486843 U CN207486843 U CN 207486843U CN 201721060747 U CN201721060747 U CN 201721060747U CN 207486843 U CN207486843 U CN 207486843U
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- radiation heating
- gas radiation
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- wall
- refracto
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- 230000005855 radiation Effects 0.000 claims abstract description 40
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 239000003245 coal Substances 0.000 description 5
- 238000010248 power generation Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
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Abstract
The utility model discloses a supercritical CO2The refractory belt structure of the boiler hearth is characterized in that the refractory belt is arranged on the primary gas radiation heating surface of the higher burner region of the furnace heat load furnace in the boiler, so that the heat absorption of the primary gas radiation heating surface of the burner region can be greatly reduced, and the tube wall temperature of the primary gas radiation heating surface is effectively reducedTherefore, the problem of overtemperature of the tube wall caused by overlarge heat absorption of the working medium in the primary gas radiation heating surface tube is avoided, and the working safety of the primary gas radiation heating surface is improved.
Description
Technical field
The utility model belongs to advanced efficient field of thermal power, and in particular to a kind of supercritical CO 2 boiler furnace defends combustion
Band structure.
Background technology
The efficiency that generating set is continuously improved is the eternal theme and target of power industry research.For electricity power enterprise
Speech, the cycle efficieny of system is higher, and the energy consumption of unit generated energy is lower, and corresponding energy-output ratio and pollutant discharge amount are just
It is lower.For traditional using steam Rankine cycle as the generating set of energy conversion system, if improving generating efficiency to 50% left side
The right side then needs to improve main steam condition to 700 DEG C, this, which means that, needs that high economic cost and time cost is spent to grind
Send out nickel base superalloy novel.In order to avoid the technical bottleneck in terms of material, sight is transferred to novel dynamic by scholars one after another
The power circulatory system, to realize the promotion of generating efficiency.By a large amount of early-stage study of scholars and demonstration, generally recognize at present
Can supercritical CO2Brayton cycle is the new concept advanced power systems of great potential.This is mainly due to supercritical COs2Tool
There are the features such as energy density is big, heat transfer efficiency is high, supercritical CO2Brayton cycle efficient power generation system can be in 620 DEG C of temperature
In the range of reach the efficiency of 700 DEG C of conventional steam Rankine cycle, do not need to novel high-temperature nickel-base alloy of redeveloping, and equipment ruler
The very little steam unit less than same parameter, economy are very good.
The characteristics of China's energy natural endowment, determines that coal fired power generation is still the master of China's electric structure in following very long-term
Therefore body, develops big moulded coal base supercritical CO2Brayton cycle efficient power generation system meets the fundamental realities of the country in China very much, tool
There is very wide application prospect.
Supercritical CO2Boiler is big moulded coal base supercritical CO2Key equipment in Brayton cycle efficient power generation system it
One.For coal base supercritical CO2For Brayton cycle efficient power generation system, since backheat amount is big in whole system, boiler one
Secondary gas radiation heating-surface import Temperature of Working is usually all very high, up to 500 DEG C or more.So high import Temperature of Working, it is right
The job security of the primary gas radiation heating-surface of boiler brings serious threat.In addition, coal base supercritical CO2Brayton cycle generates electricity
The own characteristic of system determines supercritical CO2Boiler furnace domestic demand arranges primary gas radiation heating-surface and the radiation of secondary gas simultaneously
Heating surface, and the changeover portion of primary gas radiation heating-surface and secondary gas radiation heating-surface is located at hearth combustor region, and fire
The high heat load feature in burner area causes the primary gas radiation heating-surface positioned at the region to be easier that tube wall overtemperatute occurs, from
And bring huge security risk.
Invention content
The purpose of this utility model is to provide a kind of supercritical CO 2 boiler furnace wall with refractory lining, refracto structures.
In order to achieve the above objectives, the utility model is achieved through the following technical solutions：Boiler Furnace including carrying dry bottom hopper
The changeover portion of thorax, primary gas radiation heating-surface and secondary gas radiation heating-surface is located at hearth combustor region, in hearth combustor
Wall with refractory lining, refracto is disposed on the primary gas radiation heating-surface in region.
The wall with refractory lining, refracto is arranged on the four sides wall, front-back wall or left and right side wall in hearth combustor region.
The height H of the wall with refractory lining, refracto is less than the height L of the primary gas radiation heating-surface in hearth combustor region.
The height H of the wall with refractory lining, refracto is equal to the height L of the primary gas radiation heating-surface in hearth combustor region.
The height H of the wall with refractory lining, refracto is more than the height L of the primary gas radiation heating-surface in hearth combustor region.
The beneficial effects of the utility model are：
Since the utility model passes through cloth on the primary gas radiation heating-surface of the higher burner region of the thermic load stove in stove
Wall with refractory lining, refracto is equipped with, therefore greatly reduces the primary gas radiation heating-surface heat absorption of burner region, effectively reduces primary gas radiation
Heating surface tube wall temperature, so as to avoid the excessive caused overtemperature of tube wall problem of primary gas radiation heating-surface intraductal working medium caloric receptivity,
Improve the job security of primary gas radiation heating-surface.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Wherein, 1 it is boiler furnace, 2 be dry bottom hopper, 3 be burner, 4 be wall with refractory lining, refracto, 5 is primary gas radiation heating-surface, 6
For secondary gas radiation heating-surface.
Specific embodiment
The utility model is described in further detail with reference to specific embodiment.
With reference to figure 1, the utility model includes the boiler furnace 1 with dry bottom hopper 2, primary gas radiation heating-surface 5 and secondary
The changeover portion of gas radiation heating-surface 6 is located at hearth combustor region 3, the primary gas radiation heating-surface 5 in hearth combustor region 3
On be disposed with wall with refractory lining, refracto 4, and wall with refractory lining, refracto 4 is arranged on the four sides wall, front-back wall or left and right side wall in 3 region of hearth combustor, is defended
The height H of combustion band 4 is more than, the height L less than or equal to the primary gas radiation heating-surface 5 of burner region, what the present embodiment used
It is that the height H of wall with refractory lining, refracto 4 is less than the height L of the primary gas radiation heating-surface 5 of burner region.
The utility model is by the way that wall with refractory lining, refracto is arranged on the primary gas radiation heating-surface in hearth combustor region, to reduce
The caloric receptivity of the primary gas radiation heating-surface of burner region boiler reduces the tube wall temperature of primary gas radiation heating-surface, improves pot
The job security of the primary gas radiation heating-surface of stove.Wherein wall with refractory lining, refracto can be arranged in hearth combustor area according to specific actual conditions
On the four sides wall in domain, front-back wall or left and right side wall, arrangement high flexible is changeable, can be covered with entire burner region or only in burner
The local location arrangement in area.
Claims (5)
1. a kind of supercritical CO2Boiler furnace wall with refractory lining, refracto structure, it is characterised in that：Boiler furnace including carrying dry bottom hopper (2)
(1), the changeover portion of primary gas radiation heating-surface (5) and secondary gas radiation heating-surface (6) is located at hearth combustor region (3),
Wall with refractory lining, refracto (4) is disposed on the primary gas radiation heating-surface (5) in hearth combustor region (3).
2. a kind of supercritical CO 2 boiler furnace wall with refractory lining, refracto structure according to claim 1, it is characterised in that：Described defends
Combustion band (4) is arranged on the four sides wall, front-back wall or left and right side wall of hearth combustor region (3).
3. a kind of supercritical CO 2 boiler furnace wall with refractory lining, refracto structure according to claim 1 or 2, it is characterised in that：Described
The height (H) of wall with refractory lining, refracto (4) is less than the height (L) of the primary gas radiation heating-surface (5) of hearth combustor region (3).
4. a kind of supercritical CO 2 boiler furnace wall with refractory lining, refracto structure according to claim 1 or 2, it is characterised in that：Described
The height (H) of wall with refractory lining, refracto (4) is equal to the height (L) of the primary gas radiation heating-surface (5) of hearth combustor region (3).
5. a kind of supercritical CO 2 boiler furnace wall with refractory lining, refracto structure according to claim 1 or 2, it is characterised in that：Described
The height (H) of wall with refractory lining, refracto (4) is more than the height (L) of the primary gas radiation heating-surface (5) of hearth combustor region (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721060747.1U CN207486843U (en) | 2017-08-23 | 2017-08-23 | Supercritical CO2 boiler furnace combustion-protection belt structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721060747.1U CN207486843U (en) | 2017-08-23 | 2017-08-23 | Supercritical CO2 boiler furnace combustion-protection belt structure |
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| Publication Number | Publication Date |
|---|---|
| CN207486843U true CN207486843U (en) | 2018-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721060747.1U Active CN207486843U (en) | 2017-08-23 | 2017-08-23 | Supercritical CO2 boiler furnace combustion-protection belt structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110260300A (en) * | 2019-05-29 | 2019-09-20 | 华中科技大学 | Increase the boiler furnace structure and supercritical carbon dioxide coal-burning boiler of thermal resistance outside interior augmentation of heat transfer |
-
2017
- 2017-08-23 CN CN201721060747.1U patent/CN207486843U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110260300A (en) * | 2019-05-29 | 2019-09-20 | 华中科技大学 | Increase the boiler furnace structure and supercritical carbon dioxide coal-burning boiler of thermal resistance outside interior augmentation of heat transfer |
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