CN201487941U - Stable combusting device of coal-water slurry boiler - Google Patents
Stable combusting device of coal-water slurry boiler Download PDFInfo
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- CN201487941U CN201487941U CN2009200658010U CN200920065801U CN201487941U CN 201487941 U CN201487941 U CN 201487941U CN 2009200658010 U CN2009200658010 U CN 2009200658010U CN 200920065801 U CN200920065801 U CN 200920065801U CN 201487941 U CN201487941 U CN 201487941U
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Abstract
The utility model discloses a stable combusting device of a coal-water slurry boiler. The coal-water slurry boiler comprises two hearths; two combustion chambers which are a main combustion chamber and an auxiliary combustion chamber are formed by a dual-heath structure and arranged in a 7 shape; the main combustion chamber is larger than the auxiliary combustion chamber; and in the combustion process of boiler, the load of the main combustion chamber accounts for 70 percent of the total load of the boiler and the load of the auxiliary combustion chamber accounts for 30 percent of the total load of the boiler, and an outlet of the auxiliary combustion chamber is arranged at the front side of the main combustion chamber. A certain amount of water cooling walls are distributed in the main combustion chamber; the auxiliary combustion chamber is in a heat-insulated structure and a heat-insulated combustion chamber; the auxiliary combustion chamber has small volume, easy ignition, rapid temperature rise and less heat transfer to the outside; and the heat load change of indoor temperature and section is small when the combustion quantity of coal-water slurry changes, so the coal-water slurry in the auxiliary combustion chamber can still stably ignite and combust when the coal-water slurry boiler runs under the load less than 50 percent. The main combustion chamber and the auxiliary combustion chamber are respectively provided with corresponding main combustor and auxiliary combustor.
Description
Technical field
The utility model relates to a kind of boiler structure of boiler combustion, refers in particular to a kind of boiler combustion structure of metabolic water coal slurry.This kind boiler combustion structure can be so that water-coal-slurry obtains smooth combustion in boiler.
Background technology
Water-coal-slurry is a kind of coal, water, the additive coal-based liquid fuel by the physics deep processing, has the feature of environmental protection of low ash, low-sulfur, is a kind of environmental friendly clean fuel.The development of water-coal-slurry is the clean energy resource project of state key development always, and country successively puts into effect multinomial associated policy and file, so water-coal-slurry and combusting coal water slurry boiler have very wide prospect in China.
Water-coal-slurry contains 35～40% moisture, and its combustion process will be gone through water evaporates, fugitive constituent fire burns and fixed carbon burning three phases, and about 650 ℃ at its ignition point is higher than general coal-powder boiler ignition point (about 400 ℃ at general coal-powder boiler ignition point).Therefore, boiler furnace must be possessed certain temperature and just can make water-coal-slurry moisture evaporate fire burns rapidly.When boiler load is lower than 50%, the corresponding minimizing of the fuel of input, its cross section thermic load, volume heat load significantly reduce, and furnace temperature can cause the water-coal-slurry burnout rate to descend also along with reduction then, even can not smooth combustion.So when at present general water-coal-slurry industry, boiler for domestic move, be difficult to the smooth combustion of catching fire under being lower than 50% load, need burn with the oil companion, cause operating cost significantly to promote.
Former enormous legendary fish, which could change into a roc; Chen Lifang; " adopting the principle and the application study of offset jet precombustion chamber smooth combustion water-coal-slurry " ([J] Engineering Thermophysics journal that the Wu Cheng health is proposed, 2002 01 phases), principle to offset jet precombustion chamber smooth combustion water-coal-slurry is inquired into, and the research situation that this combustion technology is used to handle black liquid has been done introduction.The result shows, adopts low pressure multistage atomizing nozzle that water-coal-slurry is atomized, and there is good coupling in the mist torch of formation and the flow field of offset jet precombustion chamber, form the recirculating zone of large scale in precombustion chamber, helps the igniting of water-coal-slurry, surely fires and eliminates lime-ash.But concrete application example is not proposed so far.
Publication number is CN1459583, the utility model name is called " water coal pulp fluidized suspension high effect cleaning combustion technology " and discloses a kind of water coal pulp fluidized suspension high effect cleaning combustion technology, proposed by quartz sand and the lime stone of coal body bed material supplementary device desired particle size, be added on the non-impartial cloth wind burner, the high 200-450mm of the bed bed of material, hot flue gas is heated to 400 ℃ with a wind with the bed material during startup, and is in the technical scheme of fluidized state in emulsion zone; The main technical points of this patented technology scheme is that water-coal-slurry is become to drip to drop into emulsion zone from feeding device; the bed material that is fluidized is heating also fire burns rapidly; temperature reaches 850-950 ℃; the water-coal-slurry group of fluidisation disintegrates and is fine grained or water-coal-slurry cluster of grains; taken out of the suspension combustion chamber that emulsion zone enters dilute-phase zone by hot flue gas, continue suspension combustion.Secondary wind is sent into the combustion chamber from the emulsion zone upside, strengthens disturbance and the burning required air is provided, and burning after heat flue gas carries part bed material, enters to separate with the water-coal-slurry cluster of grains to feed back the burning device after-flame.Bed material and water-coal-slurry cluster of grains in the high-temperature flue gas are fed back to the emulsion zone circulating combustion through the separator capture, have desulfurization, suppress NO
xProduce advantages such as noncoking.But this patent does not still solve combusting coal water slurry industry, boiler for domestic when moving under being lower than 50% load, the problem of the smooth combustion that is difficult to catch fire.
But the operation under being lower than 50% load of existing coal water slurry boiler technology solution coal water slurry boiler not yet in effect always the time is difficult to catch fire, smooth combustion and be lower than under 50% load deficiency that must burn with the oil companion, therefore necessary this is improved.
The utility model content
The purpose of this utility model is, the time be difficult to catch fire in order to overcome the operation under being lower than 50% load of combusting coal water slurry boiler, smooth combustion and be lower than under 50% load deficiency that must burn with the oil companion, a kind of new burning structure of coal water slurry boiler is provided, this structure can effectively change the combusting coal water slurry boiler under being lower than 50% load when operation existing deficiency, make coal water slurry boiler being lower than smooth combustion under 50% load, satisfy and produce needs, reduce labour intensity and operating cost.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of coal water slurry boiler smooth combustion device, adopt double-furnace structure, the burner hearth of coal water slurry boiler is divided into two, form two combustion chambers, one is main chamber, another is a subsidiary combustion chamber, two combustion chambers are " 7 " font and arrange, main chamber is greater than subsidiary combustion chamber, the load of main chamber accounts for 70% of boiler total load in the boiler combustion process, subsidiary combustion chamber is 30%, and the subsidiary combustion chamber outlet is arranged on the main chamber front side.Arrange the water-cooling wall of some in the main chamber; Subsidiary combustion chamber is a heat insulating construction, is insulated combustion chamber.Mix corresponding main burner and auxiliary burner on main chamber and subsidiary combustion chamber respectively, wherein the slurry amount adjusting ratio of auxiliary burner is 1: 3.
The beneficial effects of the utility model are, adopt double-furnace structure to make the coal water slurry boiler burning load 10%～110% stepless regulated on a large scale, and smooth combustion adapts to the needs of producing, living.Its subsidiary combustion chamber burner hearth is little, quick heating, igniting easily and can smooth combustion under little load condition.Boiler load is lower than at 30% o'clock, then only opens subsidiary combustion chamber, thereby reaches the adjusting of 10%～30% burning load.Boiler load is when 30%～110% scope, and main and auxiliary combustor opens simultaneously, reaches smooth combustion.Boiler load is lower than under 50% the situation, and the high temperature heat source that provides because of the burning that subsidiary combustion chamber is arranged, and constantly enter the main chamber front portion is equivalent to dispose a fulcrum kerosene rifle and its companion burns to main chamber, and flameholding and efficiency of combustion can reach the high load capacity level.
Description of drawings
Below in conjunction with accompanying drawing and case study on implementation the utility model is further specified.
Accompanying drawing 1 is a structure principle chart of the present utility model.
1. auxiliary burners among the figure, 2. subsidiary combustion chamber, 3. main burner, 4. main chamber.Arrow is designated as the flue gas flow direction of auxiliary burner among the figure.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described,
As shown in the figure, the utility model is a kind of coal water slurry boiler smooth combustion device, adopt double-furnace structure, the burner hearth of coal water slurry boiler is divided into two, forms two combustion chambers, one is main chamber 4, another is that subsidiary combustion chamber 2, two combustion chambers are " 7 " font layout, and main chamber 4 is greater than subsidiary combustion chamber 2, the load of main chamber accounts for 70% of boiler total load in the boiler combustion process, and subsidiary combustion chamber is 30% of a boiler total load.Subsidiary combustion chamber 2 outlets are arranged on main chamber 4 front sides.Arrange in the main chamber 4 that some is used for the water-cooling wall 6 of heat exchange; Subsidiary combustion chamber 2 is a heat insulating construction, is insulated combustion chamber.Mix corresponding main burner 3 and auxiliary burner 1 on main chamber 4 and subsidiary combustion chamber 2 respectively, wherein the slurry amount adjusting ratio of auxiliary burner 1 is 1: 3.Auxiliary burner 1 is installed on the subsidiary combustion chamber 2, subsidiary combustion chamber 2 burner hearths are little, quick heating, igniting make that easily it can smooth combustion under the little load combustion case of boiler, the high temperature heat source that produces enters main chamber 4 front portions shown in the direction of arrow among the figure, improved the temperature of main chamber burner hearth, thereby guaranteed that water-coal-slurry can fully be burnt when boiler at low load operates.Cooperatively interacting of main burner 3 and auxiliary burner 1 be issued to the coal water slurry boiler burning load 10%～110% on a large scale in stepless regulated, smooth combustion.
Claims (6)
1. coal water slurry boiler smooth combustion device, it is characterized in that: adopt double-furnace structure, the burner hearth of coal water slurry boiler is divided into two, form two combustion chambers, one is main chamber, and another is a subsidiary combustion chamber, two combustion chambers are " 7 " font and arrange, main chamber is greater than subsidiary combustion chamber, and the load of main chamber accounts for 70% of boiler total load in the boiler combustion process, and subsidiary combustion chamber is 30% of a boiler total load.
2. coal water slurry boiler smooth combustion device according to claim 1 is characterized in that: the subsidiary combustion chamber outlet is arranged on the main chamber front side.
3. coal water slurry boiler smooth combustion device according to claim 1 is characterized in that: arrange in the main chamber that some is used for the water-cooling wall of heat exchange.
4. coal water slurry boiler smooth combustion device according to claim 1 is characterized in that: subsidiary combustion chamber is a heat insulating construction, is insulated combustion chamber.
5. coal water slurry boiler smooth combustion device according to claim 1 is characterized in that: mix corresponding main burner and auxiliary burner on main chamber and subsidiary combustion chamber respectively, wherein the slurry amount adjusting ratio of auxiliary burner is 1: 3.
6. coal water slurry boiler smooth combustion device according to claim 1 is characterized in that: subsidiary combustion chamber smooth combustion under the little load combustion case of boiler, the high temperature heat source of generation enters the main chamber front portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200658010U CN201487941U (en) | 2009-09-04 | 2009-09-04 | Stable combusting device of coal-water slurry boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200658010U CN201487941U (en) | 2009-09-04 | 2009-09-04 | Stable combusting device of coal-water slurry boiler |
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| Publication Number | Publication Date |
|---|---|
| CN201487941U true CN201487941U (en) | 2010-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200658010U Expired - Fee Related CN201487941U (en) | 2009-09-04 | 2009-09-04 | Stable combusting device of coal-water slurry boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101639216B (en) * | 2009-09-04 | 2012-11-28 | 株洲市蓝宇热能科技研制有限公司 | Stable combustion method of coal water slurry boiler and device thereof |
-
2009
- 2009-09-04 CN CN2009200658010U patent/CN201487941U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101639216B (en) * | 2009-09-04 | 2012-11-28 | 株洲市蓝宇热能科技研制有限公司 | Stable combustion method of coal water slurry boiler and device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GUIZHOU LANYU ENVIRONMENTAL PROTECTION ENERGY SERV Free format text: FORMER OWNER: ZHUZHOU LANYU THERMAL ENERGY TECHNOLOGY DEVELOPMENT CO., LTD. Effective date: 20141231 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 412007 ZHUZHOU, HUNAN PROVINCE TO: 561300 ANSHUN, GUIZHOU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20141231 Address after: 561300, Guizhou County, Anshun province Guanling County town of octagonal Village rock feet Village Patentee after: Guizhou Lanyu environmental protection energy services Ltd. Address before: Longquan 412007 Hunan Province, Zhuzhou city Lusong District Water Industrial Park Patentee before: Zhuzhou Lanyu Heat Technology Development Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20160904 |