CN2511874Y - Heat storing burner for blast furnace gas - Google Patents
Heat storing burner for blast furnace gas Download PDFInfo
- Publication number
- CN2511874Y CN2511874Y CN 01276401 CN01276401U CN2511874Y CN 2511874 Y CN2511874 Y CN 2511874Y CN 01276401 CN01276401 CN 01276401 CN 01276401 U CN01276401 U CN 01276401U CN 2511874 Y CN2511874 Y CN 2511874Y
- Authority
- CN
- China
- Prior art keywords
- blast furnace
- furnace gas
- combustion
- air
- airway
- 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
Images
Abstract
The utility model relates to a heat storing burner for blast furnace gas. At least two pairs of combustion-supporting airways are symmetrically arranged surrounding the airway of blast furnace gas and the center of the burner. The distance of nozzle of every combustion-supporting airway and the central airway nozzle of blast furnace gas is not equal. The axle line of the combustion-supporting airway which is farer from the airway of the central blast furnace gas shows a radial shape. The oblique angle of the axle wire is ranged from 5 degrees to 20 degrees. The mixing of the combustion-supporting air and the furnace gas is retarded to reach grading burning. Two heat storing bodies are respectively arranged on the inlets of the combustion-supporting airway and the airway of the central blast furnace gas. The heat storing body is used to absorb the heat of smoke and preheat the gas and the air. The utility model is of simple structure, lower cost, effective energy saving and environment protection.
Description
Technical field
The utility model relates to a kind of heat-accumulating burner of burning blast furnace gas.
Background technology
The calorific value of blast furnace gas is lower, directly be used for burning and satisfy the requirement of heating process, minority iron and steel enterprise with good conditionsi is blast furnace gas and other high heating value combustion gas such as coke-stove gas, the blending utilization of burning, or directly other Fuel Furnace of spirt as auxiliary fuel; But those do not possess the iron and steel enterprise of the condition utilized, then often directly emptying diffuse burning, therefore annual and cause energy waste to reach 900,000 tons of standard coals, and severe contamination environment.
The double pre-heating heat accumulation type stove of domestic use can use blast furnace gas, heats combustion air and combustion gas by utilizing fume afterheat, improves the theoretical temperature combustion of combustion gas, satisfies smooth combustion and heating process requirement.But do not have nozzle structure, have only combustion gas spout and air port, both are arranged in parallel or arranged crosswise, and more than combustion air and the gas-preheating to 800 ℃, temperature is higher in the stove, and formation of nitrogen oxides is big, consumes energy and contaminated environment.The FDI type burner of Japan adopts a plurality of little spout high-speed jet injection inner flue gas of the stove principles, and the oxygen concentration of combustion gas combustion air before catching fire is reduced, and reaches the purpose that reduces formation of nitrogen oxides.But FDI type burner is applicable to the high heating value combustion gas, is not suitable for low-calorie blast furnace gas.
Summary of the invention
The purpose of this utility model provides a kind of heat-accumulating burner of burning blast furnace gas, and it not only is fit to low-calorie blast furnace gas, and the optimization by nozzle structure, has reduced the growing amount of nitrogen oxide, thus energy savings, the protection environment.
For achieving the above object, around the blast furnace gas air flue of the center of burner, be symmetrical arranged at least two pairs of combustion air air flues, the distance of the every pair of combustion air air flue spout and center blast furnace gas air flue spout does not wait.
The axis of the combustion air air flue that described distance center blast furnace gas air flue is far away is radial.
Outward-dipping 5 °～20 ° of the axis of the combustion air air flue that described distance center blast furnace gas air flue is far away.Make in time and blast furnace gas mixed combustion, and, reach the fractional combustion purpose from of the postponement that mixes of the decentre jet opening distance air that spout sprayed far away with blast furnace gas from the nearer air that spout sprayed of decentre jet opening distance.
In combustion air air flue and blast furnace gas air flue porch, center, heat storage is set respectively.In order to absorb heat, preheating gas and the air of flue gas.Thereby the reduction exhaust gas temperature guarantees ignition temperature, makes blast furnace gas smooth combustion under low-oxygen environment, reduces the growing amount of nitrogen oxide, satisfies the heating process requirement of heating furnace.
Because the calorific value of blast furnace gas is lower, the relative high heating value combustion gas of required combustion-supporting air quantity is few, and a warm-up combustion-supporting air can't all absorb smoke discharging residual heat, thereby exhaust gas temperature is increased, and the thermal efficiency reduces; Adopt the utility model, preheated air, coal gas can reduce exhaust gas temperature simultaneously; improve theoretical temperature combustion, stable ignition makes the blast furnace gas can smooth combustion under lower oxygen concentration; and reduce the growing amount of nitrogen oxide, thus energy savings, the protection environment.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is that the A-A of Fig. 1 is to profile;
Fig. 3 is that the B-B of Fig. 1 is to profile.Drawing reference numeral explanation: 1 center blast furnace gas spout, 2,3,4,5 combustion air spouts, 6 heat storages
The specific embodiment
As shown in Figure 1, be symmetrical arranged at least two pairs of combustion air air flues around the blast furnace gas air flue of the center of burner, the distance of the every pair of combustion air air flue spout 2,3,4,5 and center blast furnace gas air flue spout 1 does not wait.
As Fig. 2, shown in Figure 3, spout 2,4 distance center spouts 1 are two spouts 3 relatively in addition, 5 want near, and the air flue central axis of No. 3 and No. 5 spouts is radial, its outward-dipping angle is 5 °～20 °, can postpone like this from spout 3 and the combustion air of 5 ejections and mixing of blast furnace gas, make spout 2 and 4 air that sprayed and the abundant mixed combustion of blast furnace gas, and the postponement that mixes of spout 3 and 5 air that sprayed and blast furnace gas, thereby reach the purpose of the two preheatings of fractional combustion, improve theoretical temperature combustion, stable ignition is realized high-temperature and low-oxygen combustion, thereby reduces the growing amount of nitrogen oxide.Corresponding to 5 ° of air jet inclination angle, 10 °, 15 °, 20 ° the time, the ppm value of the nitrogen oxide that the exit generates is respectively 103.7,141.8, and 125.9 and 165.8, can see that the formation of nitrogen oxides in this scope can remain on below the 170ppm.
The muzzle velocity of blast furnace gas and air is 40～60m/s, and temperature is more than 800 ℃, and theoretical temperature combustion is higher than 1500 ℃.Heat storage 6 is set, in order to absorb the heat of flue gas, storage temperature around spout.Thereby the reduction exhaust gas temperature guarantees ignition temperature, makes blast furnace gas smooth combustion under low-oxygen environment, reduces the growing amount of nitrogen oxide, satisfies the heating process requirement of heating furnace.Through experimental analysis, the thermal efficiency of stove can be brought up to 81.5% from 62.2% behind application the utility model.
Claims (4)
1. the heat-accumulating burner of a burning blast furnace gas is symmetrical arranged at least two pairs of combustion air air flues around the blast furnace gas air flue of the center of burner, it is characterized in that, the distance of the every pair of combustion air air flue spout and center blast furnace gas air flue spout does not wait.
2. the heat-accumulating burner of burning blast furnace gas as claimed in claim 1 is characterized in that, the axis of the combustion air air flue that described distance center blast furnace gas air flue is far away is radial.
3. the heat-accumulating burner of burning blast furnace gas as claimed in claim 2 is characterized in that, outward-dipping 5 °～20 ° of the axis of the combustion air air flue that described distance center blast furnace gas air flue is far away.
4. as the heat-accumulating burner of the described blast furnace gas of claim 1,2 or 3, it is characterized in that,, heat storage is set respectively in combustion air air flue and blast furnace gas air flue porch, center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01276401 CN2511874Y (en) | 2001-12-29 | 2001-12-29 | Heat storing burner for blast furnace gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01276401 CN2511874Y (en) | 2001-12-29 | 2001-12-29 | Heat storing burner for blast furnace gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2511874Y true CN2511874Y (en) | 2002-09-18 |
Family
ID=33680517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01276401 Expired - Lifetime CN2511874Y (en) | 2001-12-29 | 2001-12-29 | Heat storing burner for blast furnace gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2511874Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848220A (en) * | 2015-05-29 | 2015-08-19 | 北京神雾环境能源科技集团股份有限公司 | Heat-storage-type burning device |
| CN107246608A (en) * | 2017-07-14 | 2017-10-13 | 上海华之邦科技股份有限公司 | A kind of Researched of Air Staging Combustion Burning Pulverized Coal device and air classification collocation method |
| CN109323251A (en) * | 2018-10-29 | 2019-02-12 | 天津大学 | Flameless combustion systems and method for fuel gas with low heat value |
-
2001
- 2001-12-29 CN CN 01276401 patent/CN2511874Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848220A (en) * | 2015-05-29 | 2015-08-19 | 北京神雾环境能源科技集团股份有限公司 | Heat-storage-type burning device |
| CN107246608A (en) * | 2017-07-14 | 2017-10-13 | 上海华之邦科技股份有限公司 | A kind of Researched of Air Staging Combustion Burning Pulverized Coal device and air classification collocation method |
| CN109323251A (en) * | 2018-10-29 | 2019-02-12 | 天津大学 | Flameless combustion systems and method for fuel gas with low heat value |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204648216U (en) | A kind of Problem of Biomass Fuel Gas Combustion installment with UTILIZATION OF VESIDUAL HEAT IN | |
| CN101839473A (en) | Flue gas recirculation high temperature air energy-saving and environmental protection combustion technology | |
| CN206112904U (en) | Biomass boiler low -nitrogen combustion system | |
| CN104696949A (en) | Two-stage process denitrification method of coal fired boiler | |
| CN105114951A (en) | Tail edge backflow dual-classification low-nitrogen-oxygen gas burner | |
| CN202501472U (en) | Flat flame gas burner with low NOx emission | |
| CN103851609A (en) | Method for reducing NOx emission amount through CO2/O2 regenerative combustion | |
| CN212581984U (en) | Energy-saving emission-reducing roasting system of belt type pellet roasting machine | |
| CN2511874Y (en) | Heat storing burner for blast furnace gas | |
| CN1053701C (en) | Technology for double preheating by using blast-furnace hot-blast stove gas, and combustion-supporting air | |
| CN101928797A (en) | High-blast-temperature energy-saving and emission-reducing combined type preheating system for blast furnace | |
| CN202303346U (en) | Low-discharging high-efficient layer combustion combustor | |
| CN104048502A (en) | Combustion-supporting method of rotary cement kiln burner oxygen enrichment device | |
| CN203385194U (en) | Porous medium smoke hot blast stove capable of combusting low-grade fuel | |
| CN201062796Y (en) | Apparatus for secondary pre-heating combustion air for oil gas multifuel combustion heating furnace | |
| CN206861508U (en) | A kind of boiler and its side water wall high temperature corrosion resistance coking device | |
| CN201785422U (en) | High-air-temperature energy-saving emission-reduction combined preheating system of blast furnace | |
| CN210373404U (en) | Horizontal pulverized coal fired boiler | |
| CN2847068Y (en) | Waste liquid, waste gas burning fast cooling integrated incinerator | |
| CN2735175Y (en) | Multiphase cofiring low nitrogen oxide combustor | |
| CN2674304Y (en) | High-temp low-oxygen air and smoke mixer | |
| CN201819386U (en) | Double-furnace hearth boiler | |
| CN213395306U (en) | High-speed low-nitrogen burner for gas heat treatment furnace | |
| CN201359291Y (en) | Multifunctional environmental-friendly and energy-saving combustor | |
| CN213713045U (en) | Flat flame low-nitrogen burner for gas high-temperature heating furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20111229 Granted publication date: 20020918 |