CN203501162U - Circulating fluidized bed boiler hearth structure for burning high-moisture and low-heat-value biomass fuel - Google Patents
Circulating fluidized bed boiler hearth structure for burning high-moisture and low-heat-value biomass fuel Download PDFInfo
- Publication number
- CN203501162U CN203501162U CN201320642298.7U CN201320642298U CN203501162U CN 203501162 U CN203501162 U CN 203501162U CN 201320642298 U CN201320642298 U CN 201320642298U CN 203501162 U CN203501162 U CN 203501162U
- Authority
- CN
- China
- Prior art keywords
- wear
- pin
- biomass fuel
- hearth
- moisture
- 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.)
- Expired - Lifetime
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 28
- 239000002028 Biomass Substances 0.000 title claims abstract description 24
- 238000009413 insulation Methods 0.000 claims abstract description 10
- 229920000742 Cotton Polymers 0.000 claims abstract description 6
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000004568 cement Substances 0.000 claims abstract description 6
- 239000002131 composite material Substances 0.000 claims abstract description 6
- 235000019362 perlite Nutrition 0.000 claims abstract description 6
- 239000010451 perlite Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 12
- 239000012774 insulation material Substances 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 abstract 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 9
- 238000002485 combustion reaction Methods 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 3
- 229910000323 aluminium silicate Inorganic materials 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000001965 increasing effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
Images
Landscapes
- Solid-Fuel Combustion (AREA)
Abstract
The utility model discloses a circulating fluidized bed boiler hearth structure for burning high-moisture and low-heat-value biomass fuel. A membrane water-cooled wall is arranged in a furnace wall around a hearth; wear-proof castable is arranged on an inner surface of the furnace wall; the membrane water-cooled wall is covered by the wear-proof castable; a pin is connected on the membrane water-cooled wall, and the furnace wall is fixed on the membrane water-cooled wall through the pin; the hearth structure is characterized in that a cement perlite concrete insulating layer is arranged between the inner side of the membrane water-cooled wall and the wear-proof castable; the pin is covered by silicate composite thermal insulation cotton. When burning some biomass fuel which is high in moisture and low in heat value, the hearth structure is easy to ignite, so as to guarantee sufficient burning. The hearth structure has the advantages of being simple in manner, easy to implement, and capable of greatly reducing heat absorption capacity of the water-cooled wall around the hearth, so that sufficient heat energy is provided to evaporate water in the flue, thus guaranteeing easy ignition, sufficient burning, high operation stability and obvious economical efficiency.
Description
Technical field
The utility model belongs to biomass fuel boiler technical field, relates in particular to a kind of chamber structure of biomass fuel boiler.
Background technology
The continuous aggravation of the environmental pressure bringing along with continuous growth and the fossil energy consumption of China's energy demand, the exploitation of new and renewable sources of energy more and more come into one's own.Develop new and renewable sources of energy, for improving, take coal as main energy resource structure, alleviate production of energy and use the environmental problem causing, ensure that the sustainable development tool of China's economic society is of great significance.Biomass resource is as renewable resource, take coal played increasing effect aspect main energy resource structure improving, country is also giving support on policy and popularization aspect comprehensive utilization biomass resource, examined a lot of biomass fuel power plant, this just makes biomass boiler have very large market.Biomass boiler is as one of three large main frames of power plant, and the characteristic that can its combustion apparatus fully adapt to domestic biomass fuel is most important.Biomass electric power plant boiler adopts technology maturation more, is suitable for the CFBB that fuel is extensive, be beneficial to environmental protection at present, but at burning some high-moistures low-calorie fuel ratio during as furfural dregs, paper mill sludge, because dry evaporation needs amount of heat, therefore easily occur catching fire postponement, combustion instability, be difficult to the phenomenon of after-flame; And what obtain from the purchase of domestic fuel market is usually high moisture fuel, even pluralities of fuel mixed form, makes biomass boiler in actual moving process, there will be the problems such as fuel combustion hysteresis, causes boiler economy, operation stability to be had a greatly reduced quality.
Burner hearth is the core component of CFBB, is one of key factor affecting boiler safety, reliable, economical operation, generally water-cooling wall front wall, Hou Qiang, both walls, consists of.Burner hearth is structurally divided into parts, water-cooled dividing wall in air compartment water-cooling wall, water-cooling wall lower component, water-cooling wall top assembly, water-cooling wall.In the furnace wall of burner hearth surrounding, be provided with fin panel casing, both protected that furnace wall is unlikely to be burnt out, absorb again a large amount of radiant heat of flame and high-temperature flue gas.Furnace wall inner surface is provided with wear-resisting pouring material, fin panel casing is by wear-resisting pouring material mulching, on fin panel casing, be connected with pin, furnace wall is fixed on fin panel casing by pin, on the one hand, reduce the heat absorption of water-cooling wall, for fuel combustion provides good temperature province, on the other hand, be conducive to prevent corrosion and the wearing and tearing of water-cooling wall, meet the needs of boiler high temperature resistance sweep of gases, but the current common pin of the fastening most employing of furnace wall, there is the shortcoming that heat conduction efficiency is high, the heat insulation effect of furnace wall is reduced; Inboard wall of burner hearth does not have insulation material layer, and the caloric receptivity of water-cooling wall is large, when burning some high-moistures low-calorie fuel, there is no the moisture in enough heat of vaporization fuel, makes it be difficult for catching fire, burn insufficient, and economy, the stability of boiler operatiopn are bad.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of boiler hearth of circulating fluidized bed structure of the high-moisture low heat value biomass fuel that burns is provided, solving catch fire postponement, the combustion instability of CFBB when the burning high-moisture low heat value biomass fuel, be difficult to the problem of after-flame, boiler combustion effect, economic performance are significantly promoted.
The technical scheme that the utility model adopted is for achieving the above object:
A kind of boiler hearth of circulating fluidized bed structure of the high-moisture low heat value biomass fuel that burns, in the furnace wall of burner hearth surrounding, be provided with fin panel casing, furnace wall inner surface is provided with wear-resisting pouring material, fin panel casing is by wear-resisting pouring material mulching, on fin panel casing, be connected with pin, furnace wall is fixed on fin panel casing by pin, it is characterized in that: between described fin panel casing inner side and wear-resisting pouring material, add cloth one layer of heat preservation layer, pin wraps up with insulation material.
Described heat-insulation layer is cement perlite thermal insulation concrete, and described insulation material is that quality silicate composite thermo-insulating is cotton.
The boiler hearth of circulating fluidized bed structure of a kind of high-moisture low heat value biomass fuel that burns of the present utility model adds cloth one deck cement perlite thermal insulation concrete between fin panel casing inner side and wear-resisting pouring material, and pin is wrapped up in the quality silicate composite thermo-insulating bale of cotton.This chamber structure is when the low-calorie biomass fuel of some high-moistures of burning, and more easily igniting, burns more abundant.Advantage is that mode is simple, easy to implement, greatly reduced the burner hearth caloric receptivity of water-cooling wall around, thereby had the moisture in enough heat of vaporization fuel, and its easily catch fire, burn more abundant, operation stability and economy are significantly promoted.
Accompanying drawing explanation
Fig. 1 is that the master of the boiler hearth of circulating fluidized bed structure of a kind of high-moisture low heat value biomass fuel that burns of the utility model looks schematic diagram.
Fig. 2 is the schematic side view of the boiler hearth of circulating fluidized bed structure of a kind of high-moisture low heat value biomass fuel that burns of the utility model.
Fig. 3 is the I portion enlarged diagram in Fig. 1.
In figure: 1-fin panel casing, 2-wear-resistant castable, 3-cement perlite thermal insulation concrete, 4-aluminosilicate refractory fiber felt, 5-pin, 6-quality silicate composite thermo-insulating is cotton.
The specific embodiment
Below by non-limiting embodiment, also by reference to the accompanying drawings the utility model is described further.
As shown in Figure 1 to Figure 3, a kind of boiler hearth of circulating fluidized bed structure of the high-moisture low heat value biomass fuel that burns, in the furnace wall of burner hearth surrounding, be provided with fin panel casing 1, furnace wall inner surface is provided with wear-resisting pouring material 2, fin panel casing 1 is by wear-resisting pouring material 2 mulchings, on fin panel casing 1, be connected with pin 5, furnace wall is fixed on fin panel casing 1 by pin 5, it is characterized in that: between described fin panel casing 1 inner side and wear-resisting pouring material 2, add cloth one deck cement perlite thermal insulation concrete 3 heat-insulation layers, the cotton 6 insulation material parcels of pin 5 use quality silicate composite thermo-insulatings; The outermost layer of furnace wall is aluminosilicate refractory fiber felt 4.
Cited embodiment is only for understanding the utility model above; it is not the restriction to the described technical scheme of the utility model; the those of ordinary skill in relevant field; on the basis of technical scheme described in claim; can also make multiple variation or distortion, within all variations that are equal to or distortion all should be encompassed in claim protection domain of the present utility model.
Claims (2)
1. the boiler hearth of circulating fluidized bed structure of the high-moisture low heat value biomass fuel that burns, in the furnace wall of burner hearth surrounding, be provided with fin panel casing, furnace wall inner surface is provided with wear-resisting pouring material, fin panel casing is by wear-resisting pouring material mulching, on fin panel casing, be connected with pin, furnace wall is fixed on fin panel casing by pin, it is characterized in that: between described fin panel casing inner side and wear-resisting pouring material, add cloth one layer of heat preservation layer, pin wraps up with insulation material.
2. the boiler hearth of circulating fluidized bed structure of a kind of high-moisture low heat value biomass fuel that burns according to claim 1, is characterized in that: described heat-insulation layer is cement perlite thermal insulation concrete, and described insulation material is that quality silicate composite thermo-insulating is cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642298.7U CN203501162U (en) | 2013-10-18 | 2013-10-18 | Circulating fluidized bed boiler hearth structure for burning high-moisture and low-heat-value biomass fuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642298.7U CN203501162U (en) | 2013-10-18 | 2013-10-18 | Circulating fluidized bed boiler hearth structure for burning high-moisture and low-heat-value biomass fuel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203501162U true CN203501162U (en) | 2014-03-26 |
Family
ID=50332138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320642298.7U Expired - Lifetime CN203501162U (en) | 2013-10-18 | 2013-10-18 | Circulating fluidized bed boiler hearth structure for burning high-moisture and low-heat-value biomass fuel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203501162U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105078203A (en) * | 2014-05-16 | 2015-11-25 | 于洋 | Stockpot |
| CN106123016A (en) * | 2016-08-12 | 2016-11-16 | 常滏源 | A kind of New-type boiler |
| CN106152111A (en) * | 2016-08-12 | 2016-11-23 | 常滏源 | Accurately control combustion system |
-
2013
- 2013-10-18 CN CN201320642298.7U patent/CN203501162U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105078203A (en) * | 2014-05-16 | 2015-11-25 | 于洋 | Stockpot |
| CN106123016A (en) * | 2016-08-12 | 2016-11-16 | 常滏源 | A kind of New-type boiler |
| CN106152111A (en) * | 2016-08-12 | 2016-11-23 | 常滏源 | Accurately control combustion system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203501162U (en) | Circulating fluidized bed boiler hearth structure for burning high-moisture and low-heat-value biomass fuel | |
| CN203489473U (en) | Layer-by-layer combustion type combustion chamber biomass boiler | |
| CN203671888U (en) | Multi-circulation heat absorption energy-saving boiler | |
| CN203274236U (en) | Three-purpose energy-saving boiler for wood, coal and electricity | |
| CN204438210U (en) | Superconductive environmental protection energy-saving heater | |
| CN201764676U (en) | Carbonized gas mixed-combustion normal pressure boiler | |
| CN102997276A (en) | Radiation enhanced combustion boiler cavity | |
| CN111740436B (en) | Energy storage peak regulation system coupled with biomass gasifier and high pressure molten salt electrode boiler | |
| CN204693800U (en) | A kind of high-effect heat absorption boiler | |
| CN101726012A (en) | Counter-burning type biomass superconductive gasifier | |
| CN202692117U (en) | Refractory belt capable of reducing local temperature of boiler | |
| CN202511453U (en) | Double-layer hot blast stove | |
| CN2924398Y (en) | Coal-saving instant-heating boiler | |
| CN201241076Y (en) | Cleaning type thermal recovery coke oven gas collecting tube | |
| CN203052709U (en) | Radiating intensified firing boiler hearth | |
| CN201212697Y (en) | High-efficiency, energy-saving and environment-friendly wood-coal dual-purpose gasifier | |
| CN207702434U (en) | A kind of more furnace core pneumatic type boilers | |
| CN201047589Y (en) | Coal water slurry industry boiler combustion chamber | |
| CN202675363U (en) | Domestic type straw biomass furnace | |
| CN203010581U (en) | Gas burning equipment | |
| CN204678400U (en) | A kind of tempering furnace wall auxiliary combustion equipment | |
| CN203349251U (en) | Afterburning system device of sintering waste-heat boiler | |
| CN202470040U (en) | Normal-pressure numerical control hot water boiler | |
| CN204902223U (en) | Ordinary pressure boiler partly gasifies | |
| CN2793550Y (en) | Boiler with tailed gas of carbon black as fuel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140326 |