CN2864378Y - Multistage multi-room gas boiler for coal gasification - Google Patents
Multistage multi-room gas boiler for coal gasification Download PDFInfo
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- CN2864378Y CN2864378Y CNU2005200937152U CN200520093715U CN2864378Y CN 2864378 Y CN2864378 Y CN 2864378Y CN U2005200937152 U CNU2005200937152 U CN U2005200937152U CN 200520093715 U CN200520093715 U CN 200520093715U CN 2864378 Y CN2864378 Y CN 2864378Y
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Abstract
Disclosed is a coal gasification multi-section and multi-chamber gas combustion boiler. A first wind chamber with three sections of front, middle and rear is arranged at the lower part of the grate; the front arch in the furnace is low; five combustion chambers are arranged in order from the front to the rear; a baffling stream wall is arranged between combustion chambers; two rows of second wind nozzles are arranged on the front wall of the front combustion chamber; the rear combustion chamber is provided with a side exhaust outlet; a layer combustion boiler is connected with a convection bundle; a chamber barrel with a horizontal smoke channel is arranged on the layer combustion boiler; the rear combustion chamber is provided with a steam chamber; a steam outlet is arranged on the steam chamber; the middle section of the first wind chamber is provided with a steam inlet; the inlet of the second wind nozzle and the inlet of the first wind chamber in the third section are respectively connected with a blower. The first wind chamber of the utility model is divided into three sections, and can supply first wind in different quantity to the moving coal in different stages; the front arch is lower, which is better for dry distillation of the coal which just entries the boiler furnace; five combustion chambers are arranged on the arch; a second wind nozzle is arranged in the side wall, which is better for combustion of evaporation powder and small coal. The utility model is energy-saving and environmental-protective boiler which can provide rational combustion condition for coal.
Description
Technical field
The utility model relate to evaporation capacity be 1～20 ton/time a kind of be the mobile layer combusting boiler of fuel with coal, particularly evaporation capacity be 1～20 ton/time a kind of be the mobile layer combusting boiler chimney arch shape of fuel, combustion chamber, the overfire air jet on the chimney arch with coal, coal seam spraying steam device.
Background technology
Coal is to contain multiple organic a kind of natural minerals fuel, flammable fugitive constituent and flammable fixed carbon are arranged in the coal, coal is when burning, different flammable composition in the coal needs burning conditions such as different temperature and oxygen supply, and coal can produce different combustion efficiencies under different burning conditions.Coal is when the burning beginning, and flammable fugitive constituent is heated and discharges in advance; During the coal burning, the tiny carbon granule in the coal can fly out with the wind; Fixed carbon red-hot burning when oxygen is sufficient; After spraying into high-temperature water vapor in the red-hot charcoal, produce water-gas; Fixed carbon burns when oxygen is inadequate and produces CO gas.
At present, the mobile layer combusting boiler adopts the mode of scatter fire of raw coal always, and the structure of boiler is unreasonable, can not provide rational burning condition to coal.In the prior art, evaporation capacity be 1～20 ton/time be that the mobile layer combusting boiler of fuel has grate furnace and heat exchanger with coal, grate furnace has the pushing fire grate of carrying coal, and there is air compartment of multistage the below of fire grate, is burner hearth on the fire grate, there is chimney arch the burner hearth top, the burner hearth both sides are water-cooling walls, and chimney arch has face arch and rear arch, and burner hearth has overfiren air port, between face arch and the rear arch aditus laryngis is arranged, aditus laryngis is connected with heat exchanger.Do not have the combustion chamber on the arch of this grate furnace grate furnace burner hearth top, flammable fugitive constituent and the tiny carbon granule that flies out with the wind can not fully burn, and become black smoke and discharge from chimney, cause that energy utilization rate is low, environmental pollution is serious.
The structure of chimney arch is to newly entering igniting and the influence bigger to being mixed with of flue gas in the burner hearth of coal fuel in the burner hearth, and the shape of present grate firing boiler chimney arch is a lot, and the shape of some chimney arch is unreasonable, is unfavorable for the burning of coal in the burner hearth.
Summary of the invention
The purpose of this utility model is in order to overcome above-mentioned deficiency, to propose a kind of energy saving and environment friendly coal gasification multistage multicell gas fired-boiler that rational burning condition can be provided to coal.
The utility model is realized with the following method.
Coal gasification multistage multicell gas fired-boiler has grate furnace, the side direction of grate furnace has the vertical convection tube bank, there is drum the top of grate furnace, the drum front end has front smoke box, there is back smoke box the drum rear end, back smoke box has exhanst gas outlet, horizontal smoke pipe tube bank is arranged in the drum, grate furnace has the break pushing fire grate of carrying coal, before the below of fire grate has, in, the three sections air compartments in back, it on the fire grate burner hearth, there is chimney arch the burner hearth top, the burner hearth both sides are water-cooling walls, chimney arch has face arch and rear arch, the arch of face arch long (projected length of face arch on fire grate) is 0.27 ± 0.02 times of fire grate effective length, the sagitta of face arch (rear end of face arch is apart from the height of fire grate) is 0.2 ± 0.02 times of fire grate effective length, the rear end of face arch equates with the front end height of rear arch, the length of aditus laryngis is 0.13 ± 0.02 times of fire grate effective length, the sagitta of rear arch (rear end of rear arch is apart from the height of fire grate) is relevant with boiler tonnage number, when boiler tonnage number is N, the sagitta of rear arch is 0.35+0.01 (N-1) rice, between the downside outer wall of chimney arch and drum, the the 1st～the 5 five combustion chamber that links to each other successively arranged from front to back, between five combustion chambers the labyrinth type deflected current wall is arranged successively, the 1st combustion chamber is above aditus laryngis, on the 1st combustion chamber front side wall has, two arrange overfire air jets down, last row's overfire air jet in the horizontal direction, arrange overfire air jet and horizontal direction down 15～25 degree angles of spending are arranged, arranging the axis of overfire air jet down hands at 20～30 millimeters places of rear arch front bottom end, last row's overfire air jet is apart from 150～200 millimeters of drum downside outer walls, on, descend two row's overfire air jets to have respectively and be connected with secondary wind air feed pipe with valve, there is the side direction exhanst gas outlet the 5th combustion chamber, in the 5th combustion chamber steamer is arranged, on steamer has, the next part case, on, be connected with a drainpipe between the next part case, the next part case has water inlet pipe, water inlet pipe links to each other with the drum outlet pipe, upper collecting chamber has steam outlet pipe, steam outlet pipe is connected with steamdrum, steam is surrounded by steam (vapor) outlet, before the fire grate below, in, the three sections air compartments in back have a wind inlet that is connected with valve respectively, the air compartment in stage casing has the steam inlet that is connected with valve, the steam (vapor) outlet of steamdrum links to each other with the steam inlet of an air compartment of pipeline and stage casing, on, down two row's secondary wind air feed pipes and before, in, the import of the three sections air compartments in back links to each other with air blast respectively.
Before the utility model fire grate below, in, the three sections air compartments in back are connected with the wind inlet valve respectively one time, when normal combustion, regulate one time the wind inlet valve, make fire grate below before, in, the three sections air compartments in back blast a wind of different air quantity respectively, make the intake of an air compartment of leading portion and an air compartment of back segment littler, the intake of the air compartment in stage casing more greatly, when the horizontal pushing fire grate of break deslagging of carrying coal is carried coal in the burner hearth of normal combustion, the coal seam that newly enters in the burner hearth is above air compartment of leading portion, the primary air flow that blasts is less, destructive distillation under the heating of new coal seam hot blast in the baking of lower high temperature face arch and burner hearth, flammable fugitive constituent can evaporate fully in the coal, when the coal seam enters air compartment top, stage casing, because the big oxygen abundance of intake of an air compartment, the red-hot burning of fixed carbon in the coal, temperature is higher, during the red-hot burning of fixed carbon above the air compartment in stage casing, in time the fixed carbon to red-hot burning sprays into water vapour, coal seam above the air compartment in stage casing produces water-gas, in the time of above the coal seam enters air compartment of back segment, temperature is still higher, but most of fixed carbon is after-flame, also can produce water-gas blasting the coal seam of a spot of wind above air compartment of back segment, when coal in, during the back segment burning, if wind deficiency, can produce carbon monoxide, before a wind blasts, in, during coal seam on the three sections air compartments in back on the break pushing fire grate, the tiny carbon granule of coal in the coal seam can fly out with the wind, the flammable carbon monoxide that above-mentioned coal seam produces under different burning conditions, water-gas body and flammable tiny carbon granule enter burner hearth, enter five combustion chambers that link to each other successively through stopping of face arch and rear arch by aditus laryngis, on the 1st sidewall of combustion chamber, two row's secondary air channels blast secondary wind down, the secondary wind that blasts can make in burner hearth and the flammable CO gas that enters five combustion chambers that link to each other successively, water-gas body and flammable tiny carbon granule are subjected to stirring consumingly with air and mix the generation eddy flow fully, stay whirlpool and completing combustion in stirring consumingly, at coal combustion on the fire grate and swirl flow combustion produces in burner hearth and five combustion chambers flame and high-temperature flue gas heating water-cooling wall, the steamer that heats in the 5th combustion chamber makes steamer produce steam, high-temperature flue gas is restrained to vertical convection to approaching side from a last combustion chamber side, enter the front smoke box of drum then, the tube bank of smoke pipe in drum from after the exhanst gas outlet of smoke box discharge through chimney again.
An air compartment of the present utility model is divided into three sections, and a wind of different amounts can be provided to the different phase in the coal seam of moving, and to satisfy the needed different air quantity of different phase, helps the burning or the gasification of coal; Face arch is lower, and the higher face arch of temperature can toast the coal seam that has just entered burner hearth on the fire grate, helps just having entered on the fire grate destructive distillation in burner hearth coal seam; Five combustion chambers that link to each other are successively arranged on the arch, between five combustion chambers the labyrinth type deflected current wall is arranged respectively, a most preceding sidewall of combustion chamber has upper and lower two row's secondary air channels, last row's secondary air channel in the horizontal direction, arrange secondary air channel and horizontal direction down 15～25 angles of spending are arranged, can help the burning of fugitive constituent and tiny carbon granule to the combustion chamber oxygen supply with to the gas flow-disturbing of combustion chamber, the utility model is a kind of energy saving and environment friendly boiler that rational burning condition can be provided to coal.
Below in conjunction with accompanying drawing, the utility model is further described.
Description of drawings
Fig. 1 is that schematic diagram cuts open in the master office of looking of coal gasification multistage multicell gas fired-boiler;
Fig. 2 is the A-A cross-sectional schematic of Fig. 1;
Fig. 3 is the B-B cross-sectional schematic of Fig. 1;
Fig. 4 is the front view that the fire grate segment of break projection is arranged;
Fig. 5 is the vertical view that the fire grate segment of break projection is arranged.
The specific embodiment
Fig. 1, Fig. 2, among Fig. 3, coal gasification multistage multicell gas fired-boiler has grate furnace 1, the side direction of grate furnace has vertical convection tube bank 2, there is drum 3 top of grate furnace, the drum front end has front smoke box 4, there is back smoke box 5 the drum rear end, back smoke box has exhanst gas outlet 6, horizontal smoke pipe tube bank 7 is arranged in the drum, grate furnace has the pushing fire grate 8 of carrying coal, before the below of fire grate has, in, the three sections air compartments 9 in back, 10,11, it on the fire grate burner hearth 12, there is chimney arch the burner hearth top, the burner hearth both sides are water-cooling walls 13, chimney arch has face arch 14 and rear arch 15, the long L of the arch of face arch (projected length of face arch on fire grate) is 0.27 ± 0.02 times of fire grate effective length, the sagitta H of face arch (rear end of face arch is apart from the height of fire grate) is 0.2 ± 0.02 times of fire grate effective length, the rear end of face arch equates with the front end height of rear arch, the length M of aditus laryngis is 0.13 ± 0.02 times of fire grate effective length, the sagitta P of rear arch (rear end of rear arch is apart from the height of fire grate) is relevant with the tonnage number of exerting oneself of boiler, when the tonnage number of exerting oneself of boiler is n, the sagitta of rear arch is 0.35+0.01 (n-1) rice, between the downside outer wall of chimney arch and drum, the the 1st～the 5 five combustion chamber 16 that links to each other successively arranged from front to back, 17,18,19,20, between five combustion chambers labyrinth type deflected current wall 21 is arranged successively, 22,23,24, combustion chamber 16 is above aditus laryngis, on combustion chamber 16 front side walls have, two arrange overfire air jets 25 down, 26, last row's overfire air jet in the horizontal direction, arrange overfire air jet and horizontal direction down 15～25 degree angles of spending are arranged, arranging the axis of overfire air jet down hands at 20～30 millimeters places of rear arch front bottom end, last row's overfire air jet is apart from 150～200 millimeters of drum downside outer walls, on, descend two row's overfire air jets to have respectively and be connected with secondary wind air feed pipe 27 with valve, 28, there is side direction exhanst gas outlet 29 combustion chamber 20, steamer 30 is arranged in the combustion chamber 20, on steamer has, next part case 31,32, on, be connected with a drainpipe 33 between the next part case, the next part case has water inlet pipe 34, water inlet pipe links to each other with the drum outlet pipe, upper collecting chamber has steam outlet pipe 35, steam outlet pipe is connected with steamdrum 36, steam is surrounded by steam (vapor) outlet 37, before the fire grate below, in, the three sections air compartments in back have a wind inlet 38 that is connected with valve respectively, 39,40, the air compartment in stage casing has the steam inlet 41 that is connected with valve, the steam (vapor) outlet of steamdrum links to each other with the steam inlet of an air compartment of pipeline and stage casing, on, down two row's secondary wind air feed pipes and before, in, the import of the three sections air compartments in back links to each other with air blast 42 respectively.
Above-mentioned grate furnace has only a side direction to be connected with convection recuperator.Grate furnace also can be that two side direction all are connected with convection recuperator.
Two sides in the 5th combustion chamber that two side direction of grate furnace all are connected with convection bank all have the side direction exhanst gas outlet.
In order to make the pushing fire grate at work can break, the protruding block of break be arranged on fire grate segment.
Among Fig. 4, Fig. 5, the break protruding block 44 of diamond-shaped cross-section is arranged on the fire grate segment 43.
Claims (4)
1. a coal gasification multistage multicell gas fired-boiler has grate furnace, the side direction of grate furnace has the vertical convection tube bank, there is drum the top of grate furnace, the drum front end has front smoke box, there is back smoke box the drum rear end, back smoke box has exhanst gas outlet, horizontal smoke pipe tube bank is arranged in the drum, grate furnace has the pushing fire grate of carrying coal, before the below of fire grate has, in, the three sections air compartments in back, it on the fire grate burner hearth, there is chimney arch the burner hearth top, the burner hearth both sides are water-cooling walls, it is characterized in that: chimney arch has face arch and rear arch, the arch of face arch long (projected length of face arch on fire grate) is 0.27 ± 0.02 times of fire grate effective length, the sagitta of face arch (rear end of face arch is apart from the height of fire grate) is 0.2 ± 0.02 times of fire grate effective length, the rear end of face arch equates with the front end height of rear arch, the length of aditus laryngis is 0.13 ± 0.02 times of fire grate effective length, the sagitta of rear arch (rear end of rear arch is apart from the height of fire grate) is relevant with the tonnage number of exerting oneself of boiler, when the figure place of exerting oneself of boiler ton is n, the sagitta of rear arch is 0.35+0.01 (n-1) rice, between the downside outer wall of chimney arch and drum, the the 1st～the 5 five combustion chamber that links to each other successively arranged from front to back, between five combustion chambers the labyrinth type deflected current wall is arranged successively, the 1st combustion chamber is above aditus laryngis, on the 1st combustion chamber front side wall has, two arrange overfire air jets down, last row's overfire air jet in the horizontal direction, arrange overfire air jet and horizontal direction down 15～25 degree angles of spending are arranged, arranging the axis of overfire air jet down hands at 20～30 millimeters places of rear arch front bottom end, last row's overfire air jet is apart from 150～200 millimeters of drum downside outer walls, on, descend two row's overfire air jets to have respectively and be connected with secondary wind air feed pipe with valve, there is the side direction exhanst gas outlet the 5th combustion chamber, in the 5th combustion chamber steamer is arranged, on steamer has, the next part case, on, be connected with a drainpipe between the next part case, the next part case has water inlet pipe, water inlet pipe links to each other with the drum outlet pipe, upper collecting chamber has steam outlet pipe, steam outlet pipe is connected with steamdrum, steam is surrounded by steam (vapor) outlet, before the fire grate below, in, the three sections air compartments in back have a wind inlet that is connected with valve respectively, the air compartment in stage casing has the steam inlet that is connected with valve, the steam (vapor) outlet of steamdrum links to each other with the steam inlet of an air compartment of pipeline and stage casing, on, down two row's secondary wind air feed pipes and before, in, the import of the three sections air compartments in back links to each other with air blast respectively.
2. by the described coal gasification of claim 1 multistage multicell gas fired-boiler, it is characterized in that: a side direction of described grate furnace is connected with convection recuperator.
3. by the described coal gasification of claim 1 multistage multicell gas fired-boiler, it is characterized in that: two side direction of described grate furnace are connected with convection recuperator.
4. by claim 1,2 or 3 described coal gasification multistage multicell gas fired-boilers, it is characterized in that: the break protruding block that diamond-shaped cross-section is arranged on the described fire grate segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200937152U CN2864378Y (en) | 2005-11-22 | 2005-11-22 | Multistage multi-room gas boiler for coal gasification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200937152U CN2864378Y (en) | 2005-11-22 | 2005-11-22 | Multistage multi-room gas boiler for coal gasification |
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| Publication Number | Publication Date |
|---|---|
| CN2864378Y true CN2864378Y (en) | 2007-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200937152U Expired - Fee Related CN2864378Y (en) | 2005-11-22 | 2005-11-22 | Multistage multi-room gas boiler for coal gasification |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519044A (en) * | 2011-12-27 | 2012-06-27 | 华南理工大学 | Front arch secondary air regulation device for garbage incinerator |
| CN104093944A (en) * | 2012-05-15 | 2014-10-08 | 安萨尔多能源公司 | Combined cycle plant for energy production and method for operating said plant |
| CN104864389A (en) * | 2015-05-08 | 2015-08-26 | 哈尔滨华氏海德科技发展有限公司 | Chain grate stoker capable of realizing partial gasified combustion of coal |
| CN105318319A (en) * | 2014-08-28 | 2016-02-10 | 广东科达洁能股份有限公司 | Coal-fired boiler clean combustion controlling method |
| CN105650618A (en) * | 2016-01-28 | 2016-06-08 | 孟氏锅炉（北京）有限公司 | Water gas production and combustion integrated combustion method and equipment |
| CN106838971A (en) * | 2017-04-05 | 2017-06-13 | 河南农业大学 | A kind of biomass bundling fuel chain-grate boiler air feed system |
| CN106838974A (en) * | 2017-04-05 | 2017-06-13 | 河南农业大学 | A kind of biomass bundling fuel chain-grate boiler furnace arch structure |
| CN106989384A (en) * | 2017-05-16 | 2017-07-28 | 烟台龙源电力技术股份有限公司 | A kind of layer combustion chain-grate boiler of efficient low nitrogen burning |
| CN107314360A (en) * | 2017-07-13 | 2017-11-03 | 董庆忠 | Alcohol-based fuel boiler |
| CN109405276A (en) * | 2018-09-30 | 2019-03-01 | 农业部规划设计研究院 | A kind of straw bundle burning boiler cleaning heating system |
-
2005
- 2005-11-22 CN CNU2005200937152U patent/CN2864378Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519044A (en) * | 2011-12-27 | 2012-06-27 | 华南理工大学 | Front arch secondary air regulation device for garbage incinerator |
| CN104093944A (en) * | 2012-05-15 | 2014-10-08 | 安萨尔多能源公司 | Combined cycle plant for energy production and method for operating said plant |
| CN104093944B (en) * | 2012-05-15 | 2016-10-19 | 安萨尔多能源公司 | For the combined cycle equipment of generating and for the method operating described equipment |
| CN105318319A (en) * | 2014-08-28 | 2016-02-10 | 广东科达洁能股份有限公司 | Coal-fired boiler clean combustion controlling method |
| CN104864389A (en) * | 2015-05-08 | 2015-08-26 | 哈尔滨华氏海德科技发展有限公司 | Chain grate stoker capable of realizing partial gasified combustion of coal |
| CN105650618A (en) * | 2016-01-28 | 2016-06-08 | 孟氏锅炉（北京）有限公司 | Water gas production and combustion integrated combustion method and equipment |
| CN106838971A (en) * | 2017-04-05 | 2017-06-13 | 河南农业大学 | A kind of biomass bundling fuel chain-grate boiler air feed system |
| CN106838974A (en) * | 2017-04-05 | 2017-06-13 | 河南农业大学 | A kind of biomass bundling fuel chain-grate boiler furnace arch structure |
| CN106838971B (en) * | 2017-04-05 | 2023-11-03 | 河南农业大学 | Biomass bundling fuel chain boiler air supply system |
| CN106989384A (en) * | 2017-05-16 | 2017-07-28 | 烟台龙源电力技术股份有限公司 | A kind of layer combustion chain-grate boiler of efficient low nitrogen burning |
| CN107314360A (en) * | 2017-07-13 | 2017-11-03 | 董庆忠 | Alcohol-based fuel boiler |
| CN109405276A (en) * | 2018-09-30 | 2019-03-01 | 农业部规划设计研究院 | A kind of straw bundle burning boiler cleaning heating system |
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| 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 |