CN2122320U - Pneumatic disturbance chain furnace - Google Patents
Pneumatic disturbance chain furnace Download PDFInfo
- Publication number
- CN2122320U CN2122320U CN 91229185 CN91229185U CN2122320U CN 2122320 U CN2122320 U CN 2122320U CN 91229185 CN91229185 CN 91229185 CN 91229185 U CN91229185 U CN 91229185U CN 2122320 U CN2122320 U CN 2122320U
- Authority
- CN
- China
- Prior art keywords
- strength
- furnace
- fire grate
- coal seam
- chain furnace
- 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.)
- Granted
Links
Images
Landscapes
- Solid-Fuel Combustion (AREA)
Abstract
The utility model discloses a pneumatic disturbance chain furnace, which is a new chain furnace used for the industry, comprising a furnace wall, a furnace cavity in the furnace wall, a furnace cavity water screen, a drum and various heating surface communicated with the furnace cavity water screen, a fire grate at the lower furnace cavity, a coal bed disturbance device arranged at the lower part of the fire grate. The coal bed in the chain furnace is disturbed by high speed airflow through the coal bed disturbance device, thereby, the utility model has the advantages that the diffusion of the oxygen towards to the surface of burning coal particle is reinforced, the combustion speed is accelerated, the partial combustion loss of a boiler is reduced, and the boiler efficiency is increased.
Description
The utility model relates to a kind of boiler, particularly a kind of chain furnace.
Chain furnace is present the most widely used domestic Industrial Boiler, and its combustion system is the grate firing mode.Static relatively because of the coal seam on the traveling-grate stoker, do not have relative motion up and down between the coal seam, and be that single face catches fire; In the after-flame stage, top chimney arch and flame radiation effect are subjected to the obstruction of lime-ash and are difficult to go deep into bottom, and coal seam heating difficulty, the boiler slag carbon content at grate surface place are high (boiler unburned carbon loss q than other combustion system
4By standard recommendation is chain furnace 8-12%; Reciprocating furnace 7-10%; Handwarmer 6-7%); In recent years, along with the increase of smalls ratio in the coal supply, the downward heat-transfer capability in the chain furnace coal seam descends, the boiler slag carbon content surge, according to our statistics, the boiler slag carbon content of general actual motion boiler is up to more than 30%, and the boiler unburned carbon loss is more than 15%.Therefore, how to overcome the intrinsic weakness of mode chain furnace combustion mode, under the actual motion condition, guarantee the abundant after-flame in coal seam, have very big realistic meaning for our energy conservation from now on.
The purpose of this utility model is to provide a kind of chain furnace that has strength coal seam perturbator, be characterized in, in chain furnace grate firing process, utilize high velocity air to come disturbance chain furnace coal seam, make bed surface from the appropriate location, the hole of burning coal layer obtains redistribution, and friction and bump take place in the relative motion of interlayer coal grain, help grey shell and peel off, thereby strengthened the diffusion of oxygen to coal combustion grain surface, accelerated burning velocity, strengthened the mutual heat-transfer capability between the coal seam, made the combustion reaction aggravation, shorten the tail-off time, make under the condition of same fire grate length, boiler slag carbon content has decline by a relatively large margin, and the boiler unburned carbon loss reduces, improve boiler efficiency, thereby obtained considerable economic.
The utility model comprises the water-cooling wall that is provided with around a furnace wall, burner hearth, the burner hearth and is attached thereto logical drum and the fire grate of lower furnace portion, the bottom of fire grate is provided with strength coal seam perturbator, said strength coal seam perturbator is a pipeline that can be connected with the outlet or the steam (vapor) outlet of boiler own of high pressure positive blower, and the position that is right against fire grate on it is provided with some nozzles.
During work of the present utility model, under fire grate, spray into high velocity air or steam by strength coal seam perturbator, thereby make the porosity of burning coal layer and the coal cinder of different burning degrees obtain redistribution, and the grain relative motion of interlayer coal and generation friction and bump, helping grey shell peels off, strengthened the diffusion of oxygen to coal combustion grain surface, accelerated burning velocity, strengthen the downward heat-transfer capability in coal seam, the final after-flame that promotes the coal seam, reduce boiler slag carbon content, the unburned carbon loss of boiler reduces, and causes boiler efficiency to improve.
Fig. 1 is a structure principle chart of the present utility model.
Fig. 2 is the positive view of strength coal seam perturbator.
Fig. 3 is the vertical view of strength coal seam perturbator.
Among the figure, (1) is that fire grate, (2) are strength coal seam perturbators, and (3) are nozzles, and (4) are burner hearths, and (5) are wind storehouse (chambers), and (6) are furnace walls, and (7) are drums.
According to the 0.1t/h grate furnace of the utility model design, compared with prior art, boiler slag carbon content descends about 10%, and boiler efficiency improves more than 2%, and can apply.
Scope: strength coal seam perturbator is installed in 20-80mm under the fire grate, and apart from coal gate appropriate location x/1=0.4-0.8, [x is the distance (m) of strength coal seam perturbator to coal gate, and 1 is fire grate effective length (m)] places the nozzle of strength coal seam perturbator.Blow out high velocity air from nozzle, air velocity ω=25-85m/s comes the coal seam on the disturbance fire grate.Nozzle diameter phi 4-φ 12mm, two nozzles distance is 30-100mm, and the nozzle at two ends and fire grate side seal distance are 150-300mm, and air quantity is 0.003-0.009VoBj.
Structure of the present utility model can be applicable on the 0.5t/h-75t/h chain furnace, uses this device can make boiler slag carbon content decline 7-15%, and primary air flow only increases by 1%, and the separate unit boiler efficiency can improve more than 2%.
Medium: can be air, also can be steam.
Wind (steam) source: wind derives from high pressure positive blower, and steam derives from continuous blowdown water of boiler own or boiler main steam.
Material: strength coal seam perturbator is made by general steel pipe.
Strength of the present utility model coal seam perturbator is particularly suitable for the transformation to existing various chain furnaces.
Claims (6)
1, strength disturbance formula chain furnace, comprise furnace wall, burner hearth, the water-cooling wall that is provided with around the burner hearth, be attached thereto the fire grate of the bottom of logical drum and burner hearth, feature of the present utility model is, the bottom of fire grate is provided with strength coal seam perturbator, and said strength coal seam perturbator is one can pass to the pipeline of gas or steam, and its position that is right against fire grate down is provided with some nozzles.
2, strength disturbance formula chain furnace according to claim 1 is characterized in that, said strength coal seam perturbator is configured in 20-80 millimeter place under the fire grate.
According to claim 1,2 described strength disturbance formula chain furnaces, it is characterized in that 3, said strength coal seam perturbator is 0.4-0.8 to the ratio of the distance of coal gate and the effective length of fire grate.
4, strength disturbance formula chain furnace according to claim 3 is characterized in that said nozzle distance between any two is the 30-100 millimeter.
5, strength disturbance formula chain furnace according to claim 3 is characterized in that, the nozzle at said two ends and fire grate side seal distance are the 150-300 millimeter.
6, strength disturbance formula chain furnace according to claim 3 is characterized in that said nozzle diameter is the 4-12 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91229185 CN2122320U (en) | 1991-11-23 | 1991-11-23 | Pneumatic disturbance chain furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91229185 CN2122320U (en) | 1991-11-23 | 1991-11-23 | Pneumatic disturbance chain furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2122320U true CN2122320U (en) | 1992-11-18 |
Family
ID=4934735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91229185 Granted CN2122320U (en) | 1991-11-23 | 1991-11-23 | Pneumatic disturbance chain furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2122320U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062757A (en) * | 2012-12-20 | 2013-04-24 | 北京中煤神州节能环保技术开发有限公司 | Partition multiple intensified combustion chain-grate boiler |
-
1991
- 1991-11-23 CN CN 91229185 patent/CN2122320U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062757A (en) * | 2012-12-20 | 2013-04-24 | 北京中煤神州节能环保技术开发有限公司 | Partition multiple intensified combustion chain-grate boiler |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101586799B (en) | Moderate temperature moderate voltage steam boiler capable of burning down the blast furnace gas | |
| CN201903058U (en) | Novel fuel-gas burner with circular flame and low NOx | |
| CN2919045Y (en) | Waste liquid and exhaust gas incinerator for acrylonitrile production | |
| CN2122320U (en) | Pneumatic disturbance chain furnace | |
| CN2284347Y (en) | Verticle dual-chamber fuel/gas boiler | |
| CN201159472Y (en) | Energy-saving discharge-reducing chain boiler equipment | |
| CN2769705Y (en) | Local aerating and combustion aiding device for industrial kiln | |
| CN206176353U (en) | Low -nitrogen combustion device | |
| CN206018595U (en) | Chain grate boiler compound combustion control system | |
| CN2405172Y (en) | Miniature, gas combustion and energy saving type tunnel furnace | |
| CN205957160U (en) | Hot flue gas ignition of boiler | |
| CN221172230U (en) | Fluidized bed and boiler for vanadium extraction and decarburization of stone coal | |
| CN2835881Y (en) | Vertical coal-fired boiler | |
| CN2164502Y (en) | Mechanical stirring chain furnace | |
| CN2352881Y (en) | Embient pressure, vertical, smokeless, double flow and energy | |
| CN1012519B (en) | Vertical boiler | |
| CN2469367Y (en) | Vertical smokeless coal boiler | |
| CN209196836U (en) | A kind of built-in deflector structure of supercritical steam cycle Fluidized Bed Boiler | |
| CN2338690Y (en) | Hot air combustion-supporting smoke-eliminating atmospheric vertical boiler | |
| CN2166315Y (en) | Revolving grates boiler tank structure for coal projection machine | |
| CN201425298Y (en) | Efficient, energy-saving and multifunctional circulating heating furnace | |
| CN100422635C (en) | Energy-saving environment-friendly gasification boiler | |
| CN1240964C (en) | Spreader stoker boiler energy-saving, fume-removing air-arch combined structure | |
| CN2143720Y (en) | Furnace burning equipment with step type driving grate | |
| CN207849351U (en) | A kind of novel chain bar oven of environment protection energy-saving efficient |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |