CN108916884A - A kind of oxygenation combustion method of coal dust blending rubbish - Google Patents
A kind of oxygenation combustion method of coal dust blending rubbish Download PDFInfo
- Publication number
- CN108916884A CN108916884A CN201810497570.4A CN201810497570A CN108916884A CN 108916884 A CN108916884 A CN 108916884A CN 201810497570 A CN201810497570 A CN 201810497570A CN 108916884 A CN108916884 A CN 108916884A
- Authority
- CN
- China
- Prior art keywords
- burner hearth
- rubbish
- air
- coal dust
- oxygenation
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2204/00—Supplementary heating arrangements
- F23G2204/10—Supplementary heating arrangements using auxiliary fuel
- F23G2204/101—Supplementary heating arrangements using auxiliary fuel solid fuel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention belongs to technical field of boiler combustion, and disclose a kind of oxygenation combustion method of coal dust blending rubbish, this method is using the blend that rubbish and coal dust blend as fuel, by to primary wind pipe, secondary air duct is injected separately into pure oxygen, to increase the oxygen concentration in burner hearth, fuel is promoted to stablize in burner hearth, full combustion, wherein, two-way pure oxygen is provided by air-separating plant, enter burner hearth as oxygenation First air after pure oxygen mixes in primary wind pipe with air all the way, another way pure oxygen is used as oxygenation Secondary Air to enter burner hearth after mixing in secondary air duct with air.The present invention improves the stability of burning, changes the Temperature Distribution in combustion process, finally reduce NO by improving the oxygen concentration in burner hearthXGeneration, improve the mixing proportion of rubbish and coal dust, increase refuse disposal amount, and the thermal efficiency and burn-off rate are improved, effectively reduce the discharge of the pollutants such as bioxin.
Description
Technical field
The invention belongs to technical field of boiler combustion, more particularly, to a kind of oxygenation combustion method.
Background technique
Burning mode is one of the major way for handling a large amount of domestic wastes, can be shown to rubbish by burning
Volume reduction, decrement and the energy recovery of work.Waste incinerator burner hearth central temperature generally only has 800-900 DEG C, and furnace temperature is low, is easy to produce
The pollutants such as Sheng bioxin, therefore lead to the higher cost of incineration treatment of garbage.It, can be with using coal dust blending incineration firing power generation
Using efficient power generation system and pollutant Concetrated control facility, cleaning fully handles rubbish, effectively reduces cost.But by
In domestic waste complicated component, calorific value is lower, causes its combustion characteristics and coal dust by larger difference, so that rubbish and coal dust
Calorific value ratio is very low, otherwise will lead to blending burning it is very unstable, influence the efficiency of boiler.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides a kind of oxygenation combustions of coal dust blending rubbish
Method improves the stability of burning, increases Urban Rubbish Disposal while realizing that rubbish is rationally disposed in combustion
Amount, to improve the efficiency of combustion of fuel combination, reduces NOXDischarge, effectively reduce the discharge of the pollutants such as bioxin.This
System takes into account energy conservation and pollution reduction, comprehensive benefit with higher.,
To achieve the above object, according to one aspect of the present invention, a kind of oxygenation burning of coal dust blending rubbish is provided
Method, it is characterised in that：
This method is using rubbish and the blend of coal dust blending as fuel, by dividing to primary wind pipe, secondary air duct
Not Zhu Ru pure oxygen promote fuel to stablize in burner hearth, full combustion, wherein by air point to increase the oxygen concentration in burner hearth
Two-way pure oxygen is provided from device, enters furnace as oxygenation First air after pure oxygen mixes in primary wind pipe with air all the way
Thorax, another way pure oxygen are used as oxygenation Secondary Air to enter burner hearth, and the rubbish after mixing in secondary air duct with air
Calorific value ratio with coal dust is 1：4-7：20.
Preferably, rubbish and coal dust are thoroughly mixed to form blend before entering burner hearth, described in oxygenation First air carries
Blend enters burner hearth, and oxygenation Secondary Air promotes fuel stable, full combustion in burner hearth.
Preferably, the oxygen content of the oxygenation First air is 22%-30%, and the oxygen content of the oxygenation Secondary Air is
22%-26%, the oxygen volume flow into burner hearth account for the 22%-28% into the total volumetric flow of gas of burner hearth, in burner hearth
Excess air coefficient is 1-1.15.
Other side according to the invention additionally provides a kind of oxygenation combustion method of coal dust blending rubbish, feature
It is：
This method is using rubbish and the blend of coal dust blending as fuel, by rubbish primary wind pipe, secondary air channel
Road injects pure oxygen, to increase the oxygen concentration in burner hearth, promotes fuel to stablize in burner hearth, full combustion, wherein by air point
Two-way pure oxygen is provided from device, is entered after pure oxygen mixes in rubbish primary wind pipe with air all the way as rubbish First air
Burner hearth, another way pure oxygen are used as oxygenation Secondary Air to enter burner hearth, and the rubbish after mixing in secondary air channel with air
Calorific value ratio with coal dust is 1：4-7：20.
Preferably, coal dust is carried along into burner hearth by the coal dust First air in coal dust primary wind pipe, and rubbish is primary by rubbish
Rubbish First air in air piping is carried along into burner hearth, and rubbish and coal dust are mixed to form blend as fuel and are fired in burner hearth
It burns, the oxygenation Secondary Air promotes fuel stable, full combustion in burner hearth.
Preferably, the coal dust First air is air, and the oxygen content of the rubbish First air is 22%-30%, the increasing
The oxygen content of oxygen Secondary Air is 22%-26%, and the oxygen volume flow into burner hearth is accounted for into the total volumetric flow of gas of burner hearth
22%-28%, the excess air coefficient in burner hearth are 1-1.15.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, can obtain down and show
Beneficial effect：
1) during coal dust blends incineration firing, in the case where oxygen concentration is between 21%-30% in burner hearth, combustion
The stability and burn-off rate of material can increase, and the flue gas loss of boiler reduces, and the calorific value of rubbish and coal dust is increased than improving
The disposition amount of rubbish.
2) this method, NO are usedXProduction quantity be greatly reduced, and high temperature can more thoroughly promote the further of bioxin
It decomposes, effectively reduces the discharge of the pollutants such as bioxin.
Detailed description of the invention
Fig. 1 is the oxygenation combustion system schematic diagram that coal dust blends rubbish (rubbish and coal dust premix)；
Fig. 2 is the oxygenation combustion system schematic diagram that coal dust blends rubbish (rubbish and the non-premix of coal dust).
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below that
Not constituting conflict between this can be combined with each other.
As shown in Figure 1, isolating pure oxygen by air-separating plant, a certain amount of pure oxygen is conveyed to one by the first valve 1
Secondary air hose forms oxygenation First air.Rubbish and coal dust are mixed in a certain proportion before entering burner, are taken by oxygenation First air
Band enters burner hearth, in furnace chamber inner combustion.The oxygen concentration of oxygenation Secondary Air can suitably be increased by controlling the second valve 2, improved
Burn-off rate.Third valve 3, the adjustable air flow rate proportioning into burner hearth of the 4th valve 4.
Present invention simultaneously provides another methods, as shown in Fig. 2, coal dust is carried along into furnace as coal dust First air by air
Thorax.Pure oxygen is isolated by air-separating plant, the 5th valve 5 is opened, and rubbish individually enters burner hearth by the carrying of rubbish First air, is led to
The oxygen concentration of oxygenation Secondary Air can suitably be increased by crossing the 6th valve 6 of control, improve burn-off rate.Rubbish and coal dust fill in burner hearth
Divide mixed combining combustion.7th valve 7, the 8th valve 8, the adjustable air flow rate proportioning into burner hearth of the 9th valve 9.
Embodiment 1
As shown in Figure 1, rubbish and coal dust are dried and grind before experiment, the calorific value ratio of rubbish and coal dust is 1：4,
The two is carried by oxygenation First air after being sufficiently mixed and is passed through burner, injects burner hearth, and the oxygen content of oxygenation First air is 22%, is increased
The oxygen content of oxygen Secondary Air is 22%, and the oxygen volume flow into burner hearth accounts for 22% into the total volumetric flow of gas of burner hearth,
Excess air coefficient in burner hearth is 1.
Embodiment 2
As shown in Figure 1, rubbish and coal dust are dried and grind before experiment, the calorific value ratio of rubbish and coal dust is 3：
10, the two is carried by oxygenation First air after being sufficiently mixed and is passed through burner, injects burner hearth, and the oxygen content of oxygenation First air is
28%, the oxygen content of oxygenation Secondary Air is 24%, and the oxygen volume flow into burner hearth is accounted for into the total volumetric flow of gas of burner hearth
26%, the excess air coefficient in burner hearth is 1.05.
Embodiment 3
As shown in Figure 1, rubbish and coal dust are dried and grind before experiment, the calorific value ratio of rubbish and coal dust is 7：
20, the two is carried by oxygenation First air after being sufficiently mixed and is passed through burner, injects burner hearth, and the oxygen content of oxygenation First air is
30%, the oxygen content of oxygenation Secondary Air is 26%, and the oxygen volume flow into burner hearth is accounted for into the total volumetric flow of gas of burner hearth
28%, the excess air coefficient in burner hearth is 1.15.
Embodiment 4
As shown in Fig. 2, rubbish and coal dust are dried and grind before experiment, the calorific value ratio of rubbish and coal dust is 1：4,
Coal dust is carried along into burner hearth as coal dust First air by air, and rubbish is carried along into furnace by the rubbish First air of 22% oxygen content
Thorax, the oxygen content of oxygenation Secondary Air are 22%, and rubbish and coal dust are sufficiently mixed and burn in burner hearth, into the carrier of oxygen of burner hearth
Product flow accounts for 22% into the total volumetric flow of gas of burner hearth, and the excess air coefficient in burner hearth is 1.
Embodiment 5
As shown in Fig. 2, rubbish and coal dust are dried and grind before experiment, the calorific value ratio of rubbish and coal dust is 3：
10, coal dust is carried along into burner hearth as coal dust First air by air, and rubbish is carried along by the rubbish First air of 28% oxygen content
Burner hearth, oxygenation Secondary Air oxygen content are 24%, and rubbish and coal dust are sufficiently mixed and burn in burner hearth, into the carrier of oxygen of burner hearth
Product flow accounts for 26% into the total volumetric flow of gas of burner hearth, and the excess air coefficient in burner hearth is 1.05.
Embodiment 6
As shown in Fig. 2, rubbish and coal dust are dried and grind before experiment, the calorific value ratio of rubbish and coal dust is 7：
20, coal dust is carried along into burner hearth as First air by air, and rubbish is carried along into burner hearth by the rubbish First air of 30% oxygen content,
Oxygenation Secondary Air oxygen content is 26%, and rubbish and coal dust are sufficiently mixed and burn in burner hearth, into the oxygen volume flow of burner hearth
Amount accounts for 28% into the total volumetric flow of gas of burner hearth, and the excess air coefficient in burner hearth is 1.15.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (6)
1. a kind of oxygenation combustion method of coal dust blending rubbish, it is characterised in that：
This method is using rubbish and the blend of coal dust blending as fuel, by infusing respectively to primary wind pipe, secondary air duct
Enter pure oxygen, to increase the oxygen concentration in burner hearth, promotes fuel to stablize in burner hearth, full combustion, wherein to be filled by air separation
It sets and two-way pure oxygen is provided, enter burner hearth as oxygenation First air after pure oxygen mixes in primary wind pipe with air all the way, separately
Enter burner hearth, and the rubbish and coal dust as oxygenation Secondary Air after pure oxygen mixes in secondary air duct with air all the way
Calorific value ratio be 1：4-7：20.
2. a kind of oxygenation combustion method of coal dust blending rubbish according to claim 1, it is characterised in that：Rubbish and coal dust
Blend is thoroughly mixed to form before entering burner hearth, oxygenation First air carries the blend and enters burner hearth, oxygenation Secondary Air
Fuel is promoted to stablize in burner hearth, full combustion.
3. a kind of oxygenation combustion method of coal dust blending rubbish according to claim 2, it is characterised in that：The oxygenation one
The oxygen content of secondary wind is 22%-30%, and the oxygen content of the oxygenation Secondary Air is 22%-26%, into the oxygen volume of burner hearth
Flow accounts for the 22%-28% into the total volumetric flow of gas of burner hearth, and the excess air coefficient in burner hearth is 1-1.15.
4. a kind of oxygenation combustion method of coal dust blending rubbish, it is characterised in that：
This method is using rubbish and the blend of coal dust blending as fuel, by infusing to rubbish primary wind pipe, secondary air duct
Enter pure oxygen, to increase the oxygen concentration in burner hearth, promotes fuel to stablize in burner hearth, full combustion, wherein to be filled by air separation
It sets and two-way pure oxygen is provided, enter furnace as rubbish First air after pure oxygen mixes in rubbish primary wind pipe with air all the way
Thorax, another way pure oxygen as oxygenation Secondary Air enter burner hearth after mixing in secondary air channel with air, and the rubbish with
The calorific value ratio of coal dust is 1：4-7：20.
5. a kind of oxygenation combustion method of coal dust blending rubbish according to claim 4, it is characterised in that：Coal dust is by coal dust
Coal dust First air in primary wind pipe is carried along into burner hearth, and rubbish is entrained by the rubbish First air in rubbish primary wind pipe
Enter burner hearth, rubbish and coal dust are mixed to form blend as fuel and are burnt in burner hearth, and the oxygenation Secondary Air promotes fuel
Stablize in burner hearth, full combustion.
6. a kind of oxygenation combustion method of coal dust blending rubbish according to claim 5, it is characterised in that：The coal dust one
Secondary wind is air, and the oxygen content of the rubbish First air is 22%-30%, and the oxygen content of the oxygenation Secondary Air is 22%-
26%, the oxygen volume flow into burner hearth accounts for the 22%-28% into the total volumetric flow of gas of burner hearth, excessive empty in burner hearth
Gas coefficient is 1-1.15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810497570.4A CN108916884A (en) | 2018-05-22 | 2018-05-22 | A kind of oxygenation combustion method of coal dust blending rubbish |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810497570.4A CN108916884A (en) | 2018-05-22 | 2018-05-22 | A kind of oxygenation combustion method of coal dust blending rubbish |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108916884A true CN108916884A (en) | 2018-11-30 |
Family
ID=64403819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810497570.4A Pending CN108916884A (en) | 2018-05-22 | 2018-05-22 | A kind of oxygenation combustion method of coal dust blending rubbish |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108916884A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878829A (en) * | 2020-07-28 | 2020-11-03 | 浦湘生物能源股份有限公司 | Coal and garbage coupling fuel comprehensive treatment system and method based on fluidized bed |
| CN114764091A (en) * | 2021-01-15 | 2022-07-19 | 宝山钢铁股份有限公司 | Method for reducing carbon content of boiler fly ash |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5746144A (en) * | 1996-06-03 | 1998-05-05 | Duquesne Light Company | Method and apparatus for nox reduction by upper furnace injection of coal water slurry |
| CN1975254A (en) * | 2006-12-20 | 2007-06-06 | 天津渤海环保工程有限公司 | Oxygen-riched combusting method for house refuse incineration mixed with sludge to power generation |
| CN103968373A (en) * | 2014-04-25 | 2014-08-06 | 华中科技大学 | Pulverized coal oxygen-rich combustion method and system |
| CN203963955U (en) * | 2014-05-27 | 2014-11-26 | 广东电网公司电力科学研究院 | A kind of coal-burning power plant mud is mixed burning system |
| CN106439892A (en) * | 2016-09-30 | 2017-02-22 | 上海垒锦环境科技中心 | Mixed powder preparation system with coal and sludge coupling combustion power generation |
| CN206112947U (en) * | 2016-09-30 | 2017-04-19 | 上海垒锦环境科技中心 | Coal and domestic waste coupling combustion system |
-
2018
- 2018-05-22 CN CN201810497570.4A patent/CN108916884A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5746144A (en) * | 1996-06-03 | 1998-05-05 | Duquesne Light Company | Method and apparatus for nox reduction by upper furnace injection of coal water slurry |
| CN1975254A (en) * | 2006-12-20 | 2007-06-06 | 天津渤海环保工程有限公司 | Oxygen-riched combusting method for house refuse incineration mixed with sludge to power generation |
| CN103968373A (en) * | 2014-04-25 | 2014-08-06 | 华中科技大学 | Pulverized coal oxygen-rich combustion method and system |
| CN203963955U (en) * | 2014-05-27 | 2014-11-26 | 广东电网公司电力科学研究院 | A kind of coal-burning power plant mud is mixed burning system |
| CN106439892A (en) * | 2016-09-30 | 2017-02-22 | 上海垒锦环境科技中心 | Mixed powder preparation system with coal and sludge coupling combustion power generation |
| CN206112947U (en) * | 2016-09-30 | 2017-04-19 | 上海垒锦环境科技中心 | Coal and domestic waste coupling combustion system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878829A (en) * | 2020-07-28 | 2020-11-03 | 浦湘生物能源股份有限公司 | Coal and garbage coupling fuel comprehensive treatment system and method based on fluidized bed |
| CN114764091A (en) * | 2021-01-15 | 2022-07-19 | 宝山钢铁股份有限公司 | Method for reducing carbon content of boiler fly ash |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106247368B (en) | A kind of industrial coal powder boiler flue gas recirculation low nitrogen burning method and system | |
| CN104100979B (en) | A kind of refuse incineration grate furnace oxygen-enriched combusting remodeling method and device | |
| CN102705837B (en) | System and method for collaborative garbage disposal of cement clinker production line | |
| CN204187607U (en) | A kind of chain-grate boiler | |
| CN105351944A (en) | Modified grate furnace waste incineration device | |
| CN106918038A (en) | A kind of biomass fuel combustion with reduced pollutants system with blower mill powder | |
| CN106594710A (en) | Independent partitioned grate firing flue gas circulation combustion system and use method thereof | |
| CN108895430A (en) | A kind of efficient low NO of coupled rotational flow coal dust firing and enhanced flue gas recirculationxChain furnace | |
| CN103626409A (en) | Method and device for treatment in feeding household garbage into cement kiln in three routes | |
| CN205174391U (en) | Modified grate furnace waste incineration device | |
| CN205425856U (en) | Cement kiln bypass joint fractional combustion kiln tail smoke treatment device that leaks informaton | |
| CN104654265A (en) | Ultralow-emission nitrogen oxide biomass chain boiler | |
| CN108916884A (en) | A kind of oxygenation combustion method of coal dust blending rubbish | |
| CN110925774A (en) | Strong turbulence combustion system for reducing CO and NOx | |
| CN106168376B (en) | A kind of twin furnace coal dust gasification low nitrogen burning Industrial Boiler | |
| CN104964286A (en) | Sludge treatment method capable of reducing discharge of nitrogen oxide in pulverized coal boiler at the same time | |
| CN108679599A (en) | A kind of oxygenation combustion method of coal dust blending biomass | |
| CN108644788A (en) | A kind of oxygenation combustion method of coal dust blending sludge | |
| CN202769700U (en) | System utilizing oxygen enrichment as cement sintering primary air and coal air | |
| CN101413674A (en) | Oxygen-enriched air mixed blowing combustion adjuvant boiler energy-saving method and employed equipment thereof | |
| CN205402704U (en) | Two -stage adjustable steam plasma cyclone burner | |
| CN104456577A (en) | Hearth of household garbage incinerator based on grate furnace | |
| CN205859997U (en) | A kind of vent pulverized coal handling system | |
| CN206724142U (en) | A kind of biomass fuel combustion with reduced pollutants system with blower mill powder | |
| CN206459177U (en) | Flue gas recirculation chain furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181130 |
|
| RJ01 | Rejection of invention patent application after publication |