CN110332528A - A kind of biomass circulating fluidized bed furnace - Google Patents
A kind of biomass circulating fluidized bed furnace Download PDFInfo
- Publication number
- CN110332528A CN110332528A CN201910733218.0A CN201910733218A CN110332528A CN 110332528 A CN110332528 A CN 110332528A CN 201910733218 A CN201910733218 A CN 201910733218A CN 110332528 A CN110332528 A CN 110332528A
- Authority
- CN
- China
- Prior art keywords
- cyclone separator
- burner hearth
- flue
- baffle plate
- present
- 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
- 239000002028 Biomass Substances 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 15
- 238000005260 corrosion Methods 0.000 abstract description 15
- 239000002245 particle Substances 0.000 abstract description 6
- 239000012535 impurity Substances 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000000737 periodic effect Effects 0.000 abstract description 2
- 239000000460 chlorine Substances 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 5
- 229910052801 chlorine Inorganic materials 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 229910001514 alkali metal chloride Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 235000011164 potassium chloride Nutrition 0.000 description 2
- 239000001103 potassium chloride Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 208000035126 Facies Diseases 0.000 description 1
- 102000004142 Trypsin Human genes 0.000 description 1
- 108090000631 Trypsin Proteins 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- BUKHSQBUKZIMLB-UHFFFAOYSA-L potassium;sodium;dichloride Chemical compound [Na+].[Cl-].[Cl-].[K+] BUKHSQBUKZIMLB-UHFFFAOYSA-L 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005670 sulfation reaction Methods 0.000 description 1
- 239000012588 trypsin Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
- F22B31/0007—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed
- F22B31/0084—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed with recirculation of separated solids or with cooling of the bed particles outside the combustion bed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/008—Adaptations for flue gas purification in steam generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/02—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
- F23C10/04—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone
- F23C10/08—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases
- F23C10/10—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases the separation apparatus being located outside the combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/24—Devices for removal of material from the bed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2206/00—Fluidised bed combustion
- F23C2206/10—Circulating fluidised bed
Abstract
The present invention relates to the present invention relates to a kind of biomass circulating fluidized bed furnaces, including burner hearth, cyclone separator and flue, the exit of the burner hearth is connected with cyclone separator, the upper end of the cyclone separator is connected with flue, the lower end of the cyclone separator is connected by material returning device with burner hearth, it is equipped with baffle plate between the burner hearth and cyclone separator, superheater, economizer and air preheater are equipped in the flue, and the air preheater is located at the lower end of economizer.The present invention traps grey solid impurity particle using the viscosity of inertia and lime-ash, and corrosion is allowed to occur on baffle plate, and periodic replacement baffle plate extends service life, reduce production cost so that cyclone separator and superheater boiler tube be protected not to be corroded.
Description
Technical field
The present invention relates to a kind of fluidizer, especially a kind of biomass circulating fluidized bed furnace.
Background technique
Biomass energy accounts for about 14% in global non-renewable energy, is the fourth largest source after coal, petroleum, natural gas.
In developing country, biomass is very important the energy, can about provide 35% energy requirement.Biomass is environmentally friendly
Fuel, contained sulphur, ash content are lower, and the environmental pollution of generation is less, however, biomass alkali metal (potassium, sodium) contains with coal facies ratio
Amount is higher, while the content of Cl element in herbaceous stem biolobic material fuel is higher, these result in biomass boiler and organic heat
The serious High Temperature Corrosion of bearer boiler.High temperature corrosion directly results in the generation of incident of leakage, influences biomass stove unit fortune
Row safety and stability, therefore the biomass stove high temperature corrosion precautionary measures are of great significance.
According to correlative study data show high temperature corrosion mechanism be it is such, during biomass combustion, a large amount of chlorine,
Element sulphur and volatile alkali metal element (such as: mainly potassium and sodium) are entered in flue gas with vapor form, can be by homogeneous
Reaction forms the alkali metal chloride (sodium chloride and potassium chloride) of micron particles, condenses and be deposited on the lower tube wall of temperature
On.The alkali metal chloride (sodium chloride and potassium chloride) for condensing and being deposited on outer tube surface, by with the sulfur dioxide in flue gas
Sulfation reaction occurs and generates chlorine.Chlorine diffusion, reacts with ferro element in pipe and generates iron chloride, and gas occurs for iron chloride
Change, and is spread by dirty layer to flue gas direction.Since oxygen partial pressure is higher, i.e., under the conditions of oxidizing atmosphere, iron chloride will
It reacts with oxygen, generates iron oxide and chlorine.Chlorine is free state, (can be diffused into the interface of metal and corrosion layer
On) react again with metal, so boiler tube shows to form the iron oxide corrosion layer of evacuation in cycles.These corrosion reactions
Occur in 730 ~ 650 DEG C of regions, data show that this high temperature corrosion speed is up to annual 1.5 ~ 2mm.
It is usually at present in this region boiler tube and the inorganic closing of superheater outer wall trypsin method to the measure that high temperature corrosion is taken
Type erosion resistant coating or built-up welding high temperature corrosion resistant metal, these measures can delay to corrode, but can not fundamentally solve furnace tube corrosion
Risk.
Summary of the invention
It is a kind of using inertia and lime-ash the technical problem to be solved by the present invention is to provide for the deficiency for above having technology
Viscosity traps grey solid impurity particle, allows corrosion to occur on baffle plate, to protect the biomass circulating fluidized bed furnace of boiler tube.
The purpose of the present invention is achieved through the following technical solutions: the present invention relates to a kind of biomass circulating fluidized beds
Furnace, including burner hearth, cyclone separator and flue, the exit of the burner hearth are connected with cyclone separator, the cyclone separator
Upper end be connected with flue, the lower end of the cyclone separator is connected by material returning device with burner hearth, is divided in the burner hearth and whirlwind
From baffle plate is equipped between device, superheater, economizer and air preheater, and the air preheater are equipped in the flue
Positioned at the lower end of economizer.
Compared with the prior art, the present invention has the following advantages:
Grey solid impurity particle is trapped using the viscosity of inertia and lime-ash, allows corrosion to occur on baffle plate, regularly replaces baffle plate, thus
It protects cyclone separator and superheater boiler tube not to be corroded, extends service life, reduce production cost.
Detailed description of the invention:
Fig. 1 is structure chart of the invention；
Figure label: 1- burner hearth, 2- cyclone separator, 3- flue, 5- material returning device, 6- baffle plate, 7- superheater, 8- economizer,
9- air preheater.
Specific embodiment:
In order to deepen the understanding of the present invention, below in conjunction with embodiment and attached drawing, the invention will be further described, the implementation
Example for explaining only the invention, is not intended to limit the scope of the present invention..
This practical a kind of biomass circulating fluidized bed furnace as shown in figure 1: including burner hearth 1, cyclone separator 2 and flue 3,
The exit of the burner hearth 1 is connected with cyclone separator 2, and the upper end of the cyclone separator 2 is connected with flue 3, the whirlwind
The lower end of separator 2 is connected by material returning device 5 with burner hearth 1, and baffle plate 6 is equipped between the burner hearth 1 and cyclone separator 2,
Superheater 7, economizer 8 and air preheater 9 are equipped in the flue 3, and the air preheater 9 is located at economizer 8
Lower end.
The low melting points salt particles such as potassium chloride sodium chloride of the biomass in burner hearth Boiling Combustion, flue gas are because of inertia and sticky quilt
Baffle plate blocking is retained down, and then flue gas is discharged through cyclone separator, superheater, economizer and air preheater, to protect
It has protected cyclone separator and superheater boiler tube is not corroded.
The present invention traps grey solid impurity particle using the viscosity of inertia and lime-ash, and corrosion is allowed to occur on baffle plate, periodic replacement
Baffle plate extends service life, reduces production cost so that cyclone separator and superheater boiler tube be protected not to be corroded
The another statement of applicant, the present invention illustrate implementation method and apparatus structure of the invention by above-mentioned case study on implementation, but
The invention is not limited to above embodiment, all institutes that the object of the invention is realized using structure similar with the present invention and its method
There is mode, within protection category of the invention.
Claims (1)
1. a kind of biomass circulating fluidized bed furnace, it is characterised in that: including burner hearth (1), cyclone separator (2) and flue (3), institute
The exit for stating burner hearth (1) is connected with cyclone separator (2), and the upper end of the cyclone separator (2) is connected with flue (3), institute
The lower end for stating cyclone separator (2) is connected by material returning device (5) with burner hearth (1), in the burner hearth (1) and cyclone separator (2)
Between be equipped with baffle plate (6), superheater (7), economizer (8) and air preheater (9), and institute are equipped in the flue (3)
State the lower end that air preheater (9) is located at economizer (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910733218.0A CN110332528A (en) | 2019-08-09 | 2019-08-09 | A kind of biomass circulating fluidized bed furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910733218.0A CN110332528A (en) | 2019-08-09 | 2019-08-09 | A kind of biomass circulating fluidized bed furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110332528A true CN110332528A (en) | 2019-10-15 |
Family
ID=68149189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910733218.0A Pending CN110332528A (en) | 2019-08-09 | 2019-08-09 | A kind of biomass circulating fluidized bed furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110332528A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6322603B1 (en) * | 2000-07-10 | 2001-11-27 | The Babcock & Wilcox Company | Particulate collector channel with cooling inner elements in a CFB boiler |
| CN201149248Y (en) * | 2007-12-21 | 2008-11-12 | 北京博朗环境工程技术股份有限公司 | Biomass circulating fluid bed boiler |
| CN103307621A (en) * | 2013-05-06 | 2013-09-18 | 清华大学 | Pulverized coal fired boiler system and method with function of simultaneously removing multiple pollutants |
| CN103322558A (en) * | 2012-03-19 | 2013-09-25 | 刘柏谦 | High temperature particle trap and circulating fluidized bed boiler using same |
| CN204574012U (en) * | 2015-02-17 | 2015-08-19 | 河南省豫园锅炉机电有限公司 | A kind of CFBB |
| CN205090372U (en) * | 2015-11-03 | 2016-03-16 | 中国矿业大学 | Meniscus formula flying dust circulation separator structure |
| CN207196481U (en) * | 2017-09-22 | 2018-04-06 | 郑州三众耐磨技术有限公司 | The preposition feed back shoe of CFB boiler cyclone separator |
| CN109000221A (en) * | 2018-07-16 | 2018-12-14 | 大连亿斯德制冷设备有限公司 | A kind of coal slime processing method |
| CN210979826U (en) * | 2019-08-09 | 2020-07-10 | 江苏恒科新材料有限公司 | Biomass circulating fluidized bed furnace |
-
2019
- 2019-08-09 CN CN201910733218.0A patent/CN110332528A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6322603B1 (en) * | 2000-07-10 | 2001-11-27 | The Babcock & Wilcox Company | Particulate collector channel with cooling inner elements in a CFB boiler |
| CN201149248Y (en) * | 2007-12-21 | 2008-11-12 | 北京博朗环境工程技术股份有限公司 | Biomass circulating fluid bed boiler |
| CN103322558A (en) * | 2012-03-19 | 2013-09-25 | 刘柏谦 | High temperature particle trap and circulating fluidized bed boiler using same |
| CN103307621A (en) * | 2013-05-06 | 2013-09-18 | 清华大学 | Pulverized coal fired boiler system and method with function of simultaneously removing multiple pollutants |
| CN204574012U (en) * | 2015-02-17 | 2015-08-19 | 河南省豫园锅炉机电有限公司 | A kind of CFBB |
| CN205090372U (en) * | 2015-11-03 | 2016-03-16 | 中国矿业大学 | Meniscus formula flying dust circulation separator structure |
| CN207196481U (en) * | 2017-09-22 | 2018-04-06 | 郑州三众耐磨技术有限公司 | The preposition feed back shoe of CFB boiler cyclone separator |
| CN109000221A (en) * | 2018-07-16 | 2018-12-14 | 大连亿斯德制冷设备有限公司 | A kind of coal slime processing method |
| CN210979826U (en) * | 2019-08-09 | 2020-07-10 | 江苏恒科新材料有限公司 | Biomass circulating fluidized bed furnace |
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