CN207162604U - A kind of energy-saving environment protection fire coal cooking and heating furnace - Google Patents
A kind of energy-saving environment protection fire coal cooking and heating furnace Download PDFInfo
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- CN207162604U CN207162604U CN201721171888.0U CN201721171888U CN207162604U CN 207162604 U CN207162604 U CN 207162604U CN 201721171888 U CN201721171888 U CN 201721171888U CN 207162604 U CN207162604 U CN 207162604U
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Abstract
The utility model provides a kind of coal-fired cooking and heating furnace, the coal-fired cooking and heating furnace longitudinally disposed volatile matter return duct in pyrolytic gasification area, and the volatile matter return duct top is higher than coal filling hole, and coal-char combustion area is stretched into bottom；Heating flue and cooking flue are combined into a heating-cooking flue, the running status of coal-fired cooking and heating furnace is adjusted by cooking heating changer lever and movable cover plate.The utility model is on the basis of fractional combustion theory, by setting volatile matter return duct in pyrolytic gasification area, the phenomenon of falling cigarette when can avoid opening coal filling hole.Also, heating flue and cooking flue are merged into a flue, and in the flue on open up tertiary air orifice, form secondary burning-out zone, flue gas after-flame degree is greatly enhanced, realizes under full working scope (coal, deslagging, cooking, heating, banking etc.) stabilization smokeless combustion.
Description
Technical field
The utility model belongs to coal-fired combustion equipment field, is related to a kind of coal-fired cooking and heating furnace, more particularly to a kind of base
In the energy-saving environment protection fire coal cooking and heating furnace that fractional combustion is theoretical.
Background technology
At present, the family of northern China certain areas, particularly small towns and country residentses, generally using native heating heating,
Due to the design of cooking stove, science, part coal are not unable to completely burned and discharged with cigarette, and utilization rate is low, not only coal consumption amount
Greatly, and serious pollution can be caused to air.Also, in real life, numerous rural subscribers are while heating, it is also desirable to
Stove can use simultaneously and cooking, such as heats up water, cooks and cooking.
At present, domestic stove mainly has two kinds of coal-fired forms on the market：
It is positive to burn stove (Fig. 1 (a))：It is i.e. traditional most simply and most common direct combustion mode, flame during solid fuel ignition
Propagated along heat smoke nature flow direction, combustion intensity is high, and firepower is prosperous, can meet user's cooking demand.The positive stove that burns is applied to nothing
The low fuel of the volatile matters such as bituminous coal.Although just burning stove with good cooking ability, using bituminous coal dispersion coal or using bituminous coal as
Made of raw material during moulded coal, heating of being heated after being added due to fire coal, Volatile, discharged immediately with flue gas, volatile matter is difficult to
After-flame, cause a large amount of black smokes (tar, CO, VOC, sulphur and nitrogen oxide etc.) and people's smell of choking to be emerged, seriously pollute environment.
Reverse burning furnace (Fig. 1 (b))：I.e. solid fuel ignition when flame backheating flue gas nature flow direction propagate burning side
Formula, there is the characteristics of delaying Volatile speed, furnace temperature is high, burning is abundant, black smoke can be substantially eliminated, suitable for bituminous coal etc.
The high fuel of volatile matter.Because reverse burning furnace uses more backhaul designs more, to improve after-flame degree, firepower is weaker, therefore it should not be used
In cooking, it can only warm oneself, it is difficult to which by part, common people receive；Simultaneously because almost whole burner hearth is in oxygen-enriched high-temp combustion, nitrogen
Emissions of oxides concentration is higher.
For problem present in conventional oven, people work out the civil that can be applied to cooking and heating simultaneously
Stove-gasification furnace (such as CN 201212696Y and CN 201555250U), but have that stove combustion period is strong, load is not easy
Regulation, the defects of fire-sealing time is short and coal consumption is big.It can be brought rapidly up after coal, and volatile matter quickly separates out, and cause a large amount of
Sulphur and nitrogen oxides drastically separate out.
Fractional combustion stove is theoretical based on fractional combustion and develop, utilizes oneself pyrolysis gas under oxygen deprivation state of coal
The reducing substances such as coke caused by change and CO makes caused NO during coal burningxIt is reduced to N2, it is uniquely to have both at home and abroad
The low nitrogen coal stove of this category feature.
The existing conventional stove theoretical based on fractional combustion is mostly reverse burning furnace, as shown in Fig. 2 essential when carrying out cooking
On still fall within it is positive burn stove, different from traditional positive burning stove, for the volatile matter that it separates out fire coal before being discharged with flue gas, process is secondary
Wind burns, and reduces blackness of the exhaust.
The existing cooking and heating furnace theoretical based on fractional combustion mostly using the design of two flues, i.e., heating flue and
Cooking flue, increase body of heater volume, manufacturing cost is high, and floor space is big；Simultaneously as type coal shape is regular, voidage is big,
Volatile matter caused by carbonization is being opened coal filling hole, especially cut in progress heating and cooking by being diffused at the top of coal seam
Draft is lost because burner hearth is of short duration when changing, volatile matter/cigarette occurs to flowing backwards phenomenon within doors；
And the existing cooking and heating furnace theoretical based on fractional combustion relies primarily on coal-char combustion area and eliminated smoke, Secondary Air auxiliary
Eliminate smoke, burning, cause primary air flow big, cause semicoke area to be in strong oxidizing atmosphere, although being advantageous to burn, be unfavorable for reducing
NO_x formation and discharge；Meanwhile oxygen content is high (sometime up to 16~18%) in flue gas, this not only promotes nitrogen oxides
Generation, reduces or counteracts draw up effect of the fractional combustion to nitrogen oxides, while causes flue gas heat loss big, reduces hot profit
Use efficiency；In addition, when coal seam is grilled thoroughly, or coal-char combustion area diminishes (such as due to deslagging), reduces the burning time of volatile matter, no
Stove combustion instability is only caused, also reduces smoke effect, smoke event occurs in smoke evacuation.
Utility model content
For above mentioned problem existing for existing cooking and heating furnace, the utility model provides a kind of energy-saving environment protection fire coal cooking
Heating stove.The utility model, can by setting volatile matter return duct in pyrolytic gasification area on the basis of fractional combustion theory
To avoid the phenomenon of falling cigarette when opening coal filling hole.Also, heating flue and cooking flue are merged into a flue, and in the cigarette
It is upper in road to start tertiary air orifice, secondary burning-out zone is formed, not only greatly enhances flue gas after-flame degree, and enhances classification combustion
Burn, effectively reduce the generation and discharge of nitrogen oxides, improve the sulfur-fixing type rate of solid sulphur formed coal, while realize under full working scope
(coal, deslagging, cooking, heating, banking etc.) low CO discharges and stable smokeless combustion.
To use following technical scheme up to this purpose, the utility model：
The utility model provides a kind of coal-fired cooking and heating furnace, and the coal-fired cooking and heating furnace body top side is provided with
Chimney, the coal-fired cooking and heating furnace body top are provided with cooking mouth with chimney opposite side；The coal-fired cooking and heating furnace master
The lower section of internal portion's cooking mouth sets the first diaphragm plate, the side of the first diaphragm plate and coal-fired cooking heating furnace main body cooking mouth one
The furnace wall of side connects；The lower section of the coal-fired cooking and heating furnace body interior chimney sets the second diaphragm plate, the second diaphragm plate
Side connects with the furnace wall of coal-fired cooking heating furnace main body chimney side, and the second diaphragm plate is away from coal-fired cooking and heating furnace body floor
Height be less than height of first diaphragm plate away from coal-fired cooking and heating furnace body floor；
The lower section of first diaphragm plate sets heating-cooking flue, and the heating-cooking flue is venturi conduit；Institute
The top side for stating heating-cooking flue is connected with the second diaphragm plate；Set on the heating-cooking flue around heating-cooking flue
Tertiary air orifice is put, the tertiary air orifice is placed at the trunnion of venturi conduit, cooking mouth on the coal-fired cooking heating furnace main body
The furnace wall of side is provided with after-flame air port, and the after-flame air port connects with tertiary air orifice；Set below the heating-cooking flue
Overfiren air port；
It is pyrolytic gasification area below the coal-fired diaphragm plate of cooking heating furnace interior second, the pyrolytic gasification area and described
It is coal-char combustion area below heating-cooking flue；Coal filling hole is set on the furnace wall of pyrolytic gasification area side；The pyrolysis gas
Change and volatile matter return duct is vertically arranged in area, coal filling hole is higher than at the top of the volatile matter return duct, semicoke combustion is stretched into bottom
Burn area；
The coal-fired cooking heating furnace bottom is located at chimney side and is provided with fire grate, and First air is provided with below the fire grate
Mouthful；
Burner in cooking is opened up on first diaphragm plate, burner is stamped movable cover plate in the cooking；Described first is horizontal
One end that dividing plate is not connected with coal-fired cooking heating furnace main body furnace wall is provided with cooking heating changer lever, the cooking heating changer lever
Connect during in cooking state with the second diaphragm plate.
In the utility model, the width of first diaphragm plate is less than body of heater width, and will not be by the space of chimney bottom
Block, to ensure that flue gas can smoothly flow out from chimney.Second diaphragm plate connects with heating-cooking flue, and the second tabula
Plate no longer extends to heating-cooking flue side, enters without blocking heating-cooking flue.
In the utility model, heating flue and cooking flue are combined into a heating-cooking flue, cut by cooking heating
Bar and movable cover plate are changed to adjust the running status of coal-fired cooking and heating furnace.When coal-fired cooking heating furnace main body is in cooking state
When, regulation cooking heating changer lever makes it be connected with the second diaphragm plate, flue gas is entered back into cigarette after first passing through cooking burner cooking
Chimney carries out heating, while adjusting movable cover plate makes it not cover burner in cooking, burner in cooking is in opening, to enter
Row cooking operates；When coal-fired cooking heating furnace main body is in heating state, regulation cooking heating changer lever makes it horizontal with second
Dividing plate disconnects, while adjusting movable cover plate makes it cover burner in cooking, and flue gas can enter cigarette from heating-cooking flue
Heating is carried out in chimney.
In the utility model, the setting of the volatile matter return duct, coal seam top can be will diffuse into by stack draught
The cigarette and volatile matter in portion are drawn onto coal-char combustion area top, are then eliminated smoke by primary and secondary burning-out zone after-flame；So as to avoid beating
Open the phenomenon of falling cigarette during coal filling hole.
In the utility model, the coal filling hole can be arranged on body of heater side, be easy to body of heater to be set by wall.
In the utility model, the pyrolytic gasification area is oxygen deprivation pyrolytic gasification area, i.e., it is coal-fired enter behind pyrolytic gasification area
Carbonization is carried out under oxygen deprivation cryogenic conditions.
The preferable technical scheme of the utility model is used as below, but not as the limit of technical scheme provided by the utility model
System, by the following technical programs, can preferably reach and realize technical purpose and beneficial effect of the present utility model.
As the preferable technical scheme of the utility model, the pipe diameter at the Venturi tube trunnion is at smoke inlet
The 1/3~1/2 of diameter, by converting, it can be 0.335,0.35,0.37,0.4,0.42,0.46,0.48 or 0.5 etc., but not
Cited numerical value is only limitted to, other unrequited numerical value are equally applicable in the number range.
As the preferable technical scheme of the utility model, the number ＞ of the tertiary air orifice 1, such as 2,3,4,
5,6 or 7 etc. and more, it is not limited to cited numerical value, other unrequited numerical value in the number range
It is equally applicable.
In the utility model, the circular heating-cooking flue sets tertiary air orifice, tertiary air is formed secondary burning-out zone,
Flue gas after-flame degree is greatly enhanced, realizes under full working scope that the stabilization of (coal, deslagging, cooking, heating and banking etc.) flue gas is smokeless
Burning.
As the preferable technical scheme of the utility model, heating water heat exchanger tube is set in the chimney.
As the preferable technical scheme of the utility model, the fire grate is fixed or movable；On the fire grate
Provided with wind distributing hole.The wind distributing hole can bar shaped perforate be alternatively round hole, it is not limited to cited opening-type, its
He may be equally applied to the utility model at type perforate, as long as it can play deslagging and draught effect.The fire grate
Supporting function can be played, plays draught effect again, oxygen is provided for coal-char combustion.
The cooking heating method of above-mentioned coal-fired cooking and heating furnace, the described method comprises the following steps：
(a) fire coal is added in coal-fired cooking and heating furnace by coal filling hole, fire coal enters pyrolytic gasification area and carries out pyrolysis gas
Change, produce tar, volatile matter and semicoke；
(b) tar, volatile matter and semicoke flow downwardly into coal-char combustion area caused by step (a), are introduced with primary air nozzle
Air contact, tar, volatile matter, semicoke and air contact is set to burn；
(c) sky that caused flue gas introduces with overfiren air port after step (b) volatile matter, semicoke and air contact burning
Gas contact carries out an after-flame burning, and uncombusted flue gas enters the air contact that heating-cooking flue introduces with tertiary air orifice and entered
The secondary after-flame burning of row, the flue gas in secondary afterburnt carry out cooking or heating operation.
Wherein, the flue gas in secondary afterburnt described in step (c) carries out cooking or heating operation specifically includes following steps：
When coal-fired cooking and heating furnace carries out cooking, movable cover plate is adjusted, burner in cooking is in opening, simultaneously
Regulation cooking heating changer lever makes it connect with the second diaphragm plate, and barrier flue gas enters in chimney, and the flue gas flow direction in afterburnt is cooked a meal
Thing mouth drives flame to carry out cooking；When coal-fired cooking and heating furnace carries out heating, movable cover plate is adjusted, is in burner in cooking
Closure state, while adjusting cooking heating changer lever makes it be disconnected with the second diaphragm plate, makes the flue gas flow direction cigarette in afterburnt
Chimney, flame is driven to carry out the heating of heating water.
Compared with prior art, the utility model has the advantages that：
(1) the utility model sets volatile matter return duct from top to bottom in pyrolytic gasification area, can rely on stack draught
The flue gas and volatile matter that will diffuse at the top of coal seam are drawn onto coal-char combustion area top, then pass through primary and secondary burning-out zone after-flame
Eliminate smoke, so as to avoid the phenomenon of falling cigarette when opening coal filling hole；
(2) heating flue and cooking flue are merged into a heating-cooking flue by the utility model, and in heating-cooking
Flue middle and upper part sets the tertiary air orifice around flue surrounding, and then forms secondary burning-out zone, can greatly enhance flue gas after-flame
Degree, coal-fired burn-off rate are more than 98%, not smoldered, and CO discharge capacitys are less than 2000ppm, discharge total O in flue gas2Content ＜ 10%,
(coal, deslagging, cooking, heating, banking etc.) stable smokeless combustion is realized under full working scope；
(3) the utility model optimizes Researched of Air Staging Combustion Burning Pulverized Coal, effectively changes the oxidisability gas of coal-char combustion area and burning-out zone
The distribution of atmosphere and reducing atmosphere, the generation and discharge of nitrogen oxides are reduced, makes discharged nitrous oxides concentration<300mg/Nm3, carry
High desulfurization efficiency, while after-flame degree is ensured, improve thermal efficiency of stoves.Meanwhile make dense by CO in tertiary air afterburnt flue gas
Degree<2000ppm.
Brief description of the drawings
Fig. 1 (a) is traditional positive burning stove burning schematic diagram；
Fig. 1 (b) is traditional reverse burning furnace burning schematic diagram；
Fig. 2 is the structural representation of existing conventional coal-fired cooking and heating furnace；
Fig. 3 is the structural representation of coal-fired cooking and heating furnace described in the utility model；
Fig. 4 is that coal-fired cooking and heating furnace carries out flow of flue gas schematic diagram during cooking described in the utility model embodiment 1；
Fig. 5 is that coal-fired cooking and heating furnace carries out flow of flue gas schematic diagram during heating described in the utility model embodiment 1；
Fig. 6 (a) is the concentration and NO of CO in burnt combustion zone in the utility model embodiment 1xDischarge capacity graph of a relation；
Fig. 6 (b) is the concentration and SO of CO in burnt combustion zone in the utility model embodiment 12Discharge capacity graph of a relation；
Fig. 7 be in the utility model embodiment 1 tertiary air open after CO content in smoke variation diagram；
Wherein, 1- chimneys, 2- cooking mouths, the diaphragm plates of 3- first, the diaphragm plates of 4- second, 5- heating-cooking flues, 6- is three times
Air port, 7- after-flames air port, 8- overfiren air ports, 9- pyrolytic gasifications area, 10- coal-char combustions area, 11- coal filling holes, 12- volatile matters return
Pipeline, 13- fire grates, 14- primary air nozzles, burner in 15- cooking, 16- movable cover plates, 17- cooking heating changer levers, 18- are adopted
Warm water heat exchanger tube.
Embodiment
For the utility model is better described, the technical solution of the utility model is readily appreciated, below to the utility model
It is further described.But following embodiments is only simple example of the present utility model, does not represent or limit this practicality
New rights protection scope, scope of protection of the utility model are defined by claims.
The utility model specific embodiment part provides a kind of coal-fired cooking and heating furnace and its processing method, such as Fig. 3 institutes
Show, the coal-fired cooking and heating furnace body top side is provided with chimney 1, the coal-fired cooking and heating furnace body top and chimney 1
Opposite side is provided with cooking mouth 2；The lower section of the coal-fired cooking and heating furnace body interior cooking mouth 2 sets the first diaphragm plate 3, the
The side of one diaphragm plate 3 connects with the furnace wall of the coal-fired side of cooking heating furnace main body cooking mouth 2；The coal-fired cooking and heating furnace master
The lower section of internal portion chimney 1 sets the second diaphragm plate 4, the side of the second diaphragm plate 4 and coal-fired cooking heating furnace main body chimney 1 one
The furnace wall of side connects, and height of second diaphragm plate 4 away from coal-fired cooking and heating furnace body floor is cooked a meal less than the first diaphragm plate 3 away from fire coal
The height of thing heating stove body floor；
The lower section of first diaphragm plate 3 sets heating-cooking flue 5, and the heating-cooking flue 5 is venturi conduit；
The top side of the heating-cooking flue 5 is connected with the second diaphragm plate 4；Around heating-cooking on the heating-cooking flue 5
Flue 5 sets tertiary air orifice 6, and the tertiary air orifice 6 is placed at the trunnion of venturi conduit, the coal-fired cooking heating furnace main body
The furnace wall of the upper side of cooking mouth 2 is provided with after-flame air port 7, and the after-flame air port 7 connects with tertiary air orifice 6；The heating-cooking
The lower section of flue 5 sets overfiren air port 8；
The lower section of coal-fired second diaphragm plate of cooking heating furnace interior 4 is pyrolytic gasification area 9, the He of pyrolytic gasification area 9
The lower section of heating-cooking flue 5 is coal-char combustion area 10；Coal filling hole 11 is set on the furnace wall of the side of pyrolytic gasification area 9；
Volatile matter return duct 12 is vertically arranged in the pyrolytic gasification area 9, the top of volatile matter return duct 12 is higher than coal filling hole
11, coal-char combustion area 10 is stretched into bottom；
The coal-fired cooking heating furnace bottom is located at the side of chimney 1 and is provided with fire grate 13, and the lower section of fire grate 13 is provided with
Primary air nozzle 14；
Burner 15 in cooking are opened up on first diaphragm plate 3, burner 15 is stamped movable cover plate 16 in the cooking；It is described
One end that first diaphragm plate 3 is not connected with coal-fired cooking heating furnace main body furnace wall is provided with cooking heating changer lever 17, the cooking
Connect when heating changer lever 17 is in cooking state with the second diaphragm plate 4.
The cooking heating method of the coal-fired cooking and heating furnace, the described method comprises the following steps：
(a) fire coal is added in coal-fired cooking and heating furnace by coal filling hole 11, fire coal is pyrolyzed into pyrolytic gasification area 9
Gasification, produce tar, volatile matter and semicoke；
(b) tar, volatile matter and semicoke flow downwardly into coal-char combustion area 10 caused by step (a), draw with primary air nozzle 14
The air contact entered, tar, volatile matter, semicoke and air contact is set to burn；
(c) caused flue gas and the introducing of overfiren air port 8 after step (b) volatile matter, semicoke and air contact burning
Air contact carries out an after-flame burning, and uncombusted flue gas enters the air that heating-cooking flue introduces with tertiary air orifice 6 and connect
Touch and carry out secondary after-flame burning, the flue gas in secondary afterburnt carries out cooking or heating operation.
It is below the utility model typical case but non-limiting example：
Embodiment 1：
Present embodiments provide a kind of coal-fired cooking and heating furnace and its processing method, the coal-fired cooking heating furnace main body top
Portion side is provided with chimney 1, and the coal-fired cooking and heating furnace body top is provided with cooking mouth 2 with the opposite side of chimney 1；The fire coal
The lower section of cooking and heating furnace body interior cooking mouth 2 sets the first diaphragm plate 3, and side and the coal-fired cooking of the first diaphragm plate 3 are adopted
The furnace wall of the side of radiator main body cooking mouth 2 connects；The lower section of the coal-fired cooking and heating furnace body interior chimney 1 sets the second horizontal stroke
Dividing plate 4, the side of the second diaphragm plate 4 connect with the furnace wall of the coal-fired side of cooking heating furnace main body chimney 1, the second diaphragm plate 4 away from
The height of coal-fired cooking and heating furnace body floor is less than height of first diaphragm plate 3 away from coal-fired cooking and heating furnace body floor；
The lower section of first diaphragm plate 3 sets heating-cooking flue 5, the top side of the heating-cooking flue 5 with
Second diaphragm plate 4 connects；Tertiary air orifice 6 is set around heating-cooking flue 4 on the heating-cooking flue 5, the fire coal is cooked a meal
The furnace wall of the side of cooking mouth 2 is provided with after-flame air port 7 on thing heating furnace main body, and the after-flame air port 7 connects with tertiary air orifice 6；
The lower section of heating-cooking flue 5 sets overfiren air port 8；
The lower section of coal-fired second diaphragm plate of cooking heating furnace interior 4 is pyrolytic gasification area 9, the He of pyrolytic gasification area 9
The lower section of heating-cooking flue 5 is coal-char combustion area 10；Coal filling hole 11 is set on the furnace wall of the side of pyrolytic gasification area 9；
Volatile matter return duct 12 is vertically arranged in the pyrolytic gasification area 9, the top of volatile matter return duct 12 is higher than coal filling hole
11, coal-char combustion area 10 is stretched into bottom；
The coal-fired cooking heating furnace bottom is located at the side of chimney 1 and is provided with fire grate 13, and the lower section of fire grate 13 is provided with
Primary air nozzle 14；
Burner 15 in cooking are opened up on first diaphragm plate 3, burner 15 is stamped movable cover plate 16 in the cooking；It is described
One end that first diaphragm plate 3 is not connected with coal-fired cooking heating furnace main body furnace wall is provided with cooking heating changer lever 17, the cooking
Connect when heating changer lever 17 is in cooking state with the second diaphragm plate 4.
Wherein, the heating-cooking flue 5 is venturi conduit, and the pipe diameter at Venturi tube trunnion is smoke inlet
Locate the 1/2 of diameter；The tertiary air orifice 6 is arranged at the trunnion of venturi conduit, and the number of tertiary air orifice 6 is 4.
Heating water heat exchanger tube 18 is set in the chimney 1, and the fire grate 13 is fixed, is set on the fire grate 13
There is wind distributing hole.
The cooking heating method of the coal-fired cooking and heating furnace is：
(a) clean moulded coal is added in coal-fired cooking and heating furnace by coal filling hole 11, fire coal is carried out into pyrolytic gasification area 9
Pyrolytic gasification, produce tar, volatile matter and semicoke；
(b) tar, volatile matter and semicoke flow downwardly into coal-char combustion area 10 caused by step (a), draw with primary air nozzle 14
The air contact entered, tar, volatile matter, semicoke and air contact is set to burn, caused CO concentration in flue gas ＞ after burning
2000ppm；
(c) caused flue gas and the introducing of overfiren air port 8 after step (b) volatile matter, semicoke and air contact burning
Air contact carries out an after-flame burning, and uncombusted flue gas enters the air that heating-cooking flue introduces with tertiary air orifice 6 and connect
Touch and carry out secondary after-flame burning, the flue gas in secondary afterburnt carries out cooking or heating operation.When coal-fired cooking and heating furnace is cooked a meal
During thing, as shown in figure 4, regulation movable cover plate 16, makes burner 15 in cooking be in opening, while cooking heating switching is adjusted
Bar 17 makes it connect with the second diaphragm plate 4, and barrier flue gas enters in chimney 1, and the flue gas flow direction cooking mouth 2 in afterburnt drives flame
Carry out cooking；When coal-fired cooking and heating furnace carries out heating, as shown in figure 5, regulation movable cover plate 16, makes in cooking at burner 15
In closure state, while adjusting cooking heating changer lever 17 makes it be disconnected with the second diaphragm plate 4, makes the flue gas stream in afterburnt
To chimney 1, flame is driven to carry out the heating of heating water.
Wherein, the air introduced in step (b) from primary air nozzle 14 accounts for the 45% of total volume of air content；In step (c)
The air introduced from overfiren air port 8 accounts for the 25% of total volume of air content；The air introduced in step (c) from tertiary air orifice 6 accounts for
The 30% of total volume of air content.
In the present embodiment in coal-char combustion area described in step (b) CO concentration and NOxAnd SO2Discharge capacity is relevant, such as Fig. 6
(a) and shown in Fig. 6 (b), it can be seen that by rationally controlling fractional combustion, reduce primary air flow, increase semicoke area CO, NOx
And SO2Discharge reduces, and in semicoke area, CO is more than 2000ppm (× 1.25=mg/Nm3) after, discharge and tend towards stability after NOx generations.
NOxAnd SO2It can averagely reach<300mg/Nm3Effect, this shows in the case of without using any flue-gas cleaning devices, the people
With stove NOxAnd SO2Discharge can both reach the industry coal-boiler standard limit of smog release with expensive environmental protection facility.Also, such as
Shown in Fig. 7, by method of the present utility model, by reasonably optimizing First air air quantity, increase semicoke area CO contents, can effectively it drop
Low NOxAnd SO2Discharge, then by rationally controlling secondary/tertiary air, it is ensured that after-flame degree, reduce CO discharges.
The present embodiment system will not go out due to being provided with volatile matter return duct in pyrolytic gasification area when opening coal filling hole
The now phenomenon of falling cigarette；And the present embodiment system, when carrying out cooking heating, coal-fired burn-off rate is more than 99%, does not smolder, CO discharges
Amount is less than 2000ppm, NOxAnd SO2Discharge capacity is averaged<300mg/Nm3, discharge total O in flue gas2Content ＜ 10%, realizes full working scope
Under (coal, deslagging, cooking, heating, banking etc.) stable smokeless combustion.
Embodiment 2：
Present embodiments provide a kind of coal-fired cooking and heating furnace and its processing method, the structure of the coal-fired cooking and heating furnace
With reference to embodiment 1, difference is：The fire grate 9 is movable, and the pipe diameter at the Venturi tube trunnion enters for flue gas
The 1/3 of diameter, the number of tertiary air orifice 66 at mouthful.
The heating-cooking method of coal heating stove described in the present embodiment is with reference to processing method in embodiment 1, difference：Step
Suddenly the air introduced in (b) from primary air nozzle 14 accounts for the 40% of total volume of air content；Introduced in step (c) from overfiren air port 8
Air account for the 30% of total volume of air content；The air introduced in step (c) from tertiary air orifice 6 accounts for total volume of air content
30%.
The present embodiment system will not go out due to being provided with volatile matter return duct in pyrolytic gasification area when opening coal filling hole
The now phenomenon of falling cigarette；And the present embodiment system, when carrying out cooking heating, coal-fired burn-off rate is more than 98%, does not smolder, CO discharges
Amount is less than 2000ppm, NOxAnd SO2Discharge capacity is averaged<300mg/Nm3, discharge total O in flue gas2Content ＜ 10%, realizes full working scope
Under (coal, deslagging, cooking, heating, banking etc.) stable smokeless combustion.
Embodiment 3：
Present embodiments provide a kind of coal-fired cooking and heating furnace and its processing method, the structure of the coal-fired cooking and heating furnace
With reference to embodiment 1, difference is：Pipe diameter at the Venturi tube trunnion is 1/2.5 of diameter at smoke inlet, three times
The number in air port 68.
The heating-cooking method of coal heating stove described in the present embodiment is with reference to processing method in embodiment 1, difference：Step
Suddenly the air introduced in (b) from primary air nozzle 14 accounts for the 50% of total volume of air content；Introduced in step (c) from overfiren air port 8
Air account for the 30% of total volume of air content；The air introduced in step (c) from tertiary air orifice 6 accounts for total volume of air content
20%.
The present embodiment system will not go out due to being provided with volatile matter return duct in pyrolytic gasification area when opening coal filling hole
The now phenomenon of falling cigarette；And the present embodiment system, when carrying out cooking heating, coal-fired burn-off rate is more than 98%, does not smolder, CO discharges
Amount is less than 2000ppm, discharges total O in flue gas2Content ＜ 10%, (coal, deslagging, cooking, heating, banking are realized under full working scope
Deng) stabilization smokeless combustion.
Embodiment 4：
Present embodiments provide a kind of coal-fired cooking and heating furnace and its processing method, the structure of the coal-fired cooking and heating furnace
With reference to embodiment 1.
The heating-cooking method of coal heating stove described in the present embodiment is with reference to processing method in embodiment 1, difference：Step
Suddenly the air introduced in (b) from primary air nozzle 14 accounts for the 40% of total volume of air content；Introduced in step (c) from overfiren air port 8
Air account for the 20% of total volume of air content；The air introduced in step (c) from tertiary air orifice 6 accounts for total volume of air content
40%.
The present embodiment system will not go out due to being provided with volatile matter return duct in pyrolytic gasification area when opening coal filling hole
The now phenomenon of falling cigarette；And the present embodiment system, when carrying out cooking heating, coal-fired burn-off rate is more than 98%, does not smolder, CO discharges
Amount is less than 2000ppm, NOxAnd SO2Discharge capacity is averaged<300mg/Nm3, discharge total O in flue gas2Content ＜ 10%, realizes full working scope
Under (coal, deslagging, cooking, heating, banking etc.) stable smokeless combustion.
Comparative example 1：
This comparative example provides a kind of coal-fired cooking and heating furnace and its processing method, the structure reference of the coal heating stove
Structure in embodiment 1, difference are：Volatile matter is not provided with the pyrolytic gasification area of coal-fired cooking and heating furnace described in this comparative example to return
Return pipe road.
Its processing method is with reference to processing method in embodiment 1.
In this comparative example, due to being not provided with volatile matter return duct in pyrolytic gasification area, heating and cooking switching are being carried out
When because burner hearth is of short duration lose draft, there is volatile matter and flue gas to flowing backwards phenomenon within doors；Also, stove unstable combustion can be caused
It is qualitative, smolder, CO discharge capacitys are higher than 3000ppm, total O in flue gas2Content is 15%.
Comparative example 2：
This comparative example provides a kind of coal-fired cooking and heating furnace and its processing method, the structure reference of the coal heating stove
Structure in embodiment 1, difference are：Tertiary air orifice is not set on the heating-cooking flue 5.
Its processing method is with reference to processing method in embodiment 1.
In this comparative example, due to being not provided with tertiary air orifice in pyrolytic gasification area, coal-char combustion area can not make flue gas repeat to fire
To the greatest extent, cause semicoke area to be in strong oxidizing atmosphere, be unfavorable for reducing NO_x formation and discharge, discharged nitrous oxides concentration>
300mg/Nm3(conversion is 9% standard oxygen content), and stove combustion instability, smolder, CO discharge capacitys are higher than 3000ppm, flue gas
In total O2Content is 15%.
Comparative example 3：
This comparative example provides a kind of coal-fired cooking and heating furnace of routine and its processing method, and its structure is as shown in Fig. 2 processing
Method is this area conventional method.
Coal-fired cooking and heating furnace combustion instability described in this comparative example, smoke event is serious, and CO discharge capacitys are higher than
3000ppm, total O in flue gas2Content is 15%.
Summary embodiment and comparative example can be seen that the utility model and set volatilization from top to bottom in pyrolytic gasification area
Divide return duct, coal-char combustion area top can be drawn onto by the flue gas and volatile matter that stack draught will diffuse at the top of coal seam,
Then eliminated smoke by primary and secondary burning-out zone after-flame, so as to avoid the phenomenon of falling cigarette when opening coal filling hole；
Meanwhile heating flue and cooking flue are merged into a heating-cooking flue by the utility model, and in heating, cooking
Thing flue middle and upper part sets the tertiary air orifice around flue surrounding, and then forms secondary burning-out zone, can greatly enhance flue gas combustion
Degree to the greatest extent, coal-fired burn-off rate are more than 98%, not smoldered, CO discharge capacitys are less than 2000ppm, NOxAnd SO2Discharge capacity is averaged<300mg/
Nm3, discharge total O in flue gas2Content ＜ 10%, realize under full working scope that (coal, deslagging, cooking, heating, banking etc.) is stable smokeless
Burning.
Applicant states that the utility model illustrates detailed process equipment and work of the present utility model by above-described embodiment
Skill flow, but the utility model is not limited to above-mentioned detailed process equipment and technological process, that is, does not mean that the utility model
Having to rely on above-mentioned detailed process equipment and technological process could implement.Person of ordinary skill in the field is it will be clearly understood that right
Any improvement of the present utility model, the adding of equivalence replacement and auxiliary element to each raw material of the utility model product, specific side
Selection of formula etc., within the scope of all falling within the scope of protection of the utility model and disclosing.
Claims (5)
1. a kind of coal-fired cooking and heating furnace, it is characterised in that the coal-fired cooking and heating furnace body top side is provided with chimney
(1), the coal-fired cooking and heating furnace body top is provided with cooking mouth (2) with chimney (1) opposite side；The coal-fired cooking heating
The lower section of cooking mouth (2) sets the first diaphragm plate (3), side and the coal-fired cooking heating of the first diaphragm plate (3) inside furnace main body
The furnace wall of furnace main body cooking mouth (2) side connects；The lower section of the coal-fired cooking and heating furnace body interior chimney (1) sets second
Diaphragm plate (4), the side of the second diaphragm plate (4) connect with the furnace wall of coal-fired cooking heating furnace main body chimney (1) side, and second is horizontal
Height of the dividing plate (4) away from coal-fired cooking and heating furnace body floor is less than the first diaphragm plate (3) away from coal-fired cooking heating furnace main body bottom
The height in face；
The lower section of first diaphragm plate (3) sets heating-cooking flue (5), and the heating-cooking flue (5) is Venturi tube
Road；The top side of the heating-cooking flue (5) is connected with the second diaphragm plate (4)；It is surround on the heating-cooking flue (5)
Heating-cooking flue (5) sets tertiary air orifice (6), and the tertiary air orifice (6) is placed at the trunnion of venturi conduit, the fire coal
The furnace wall of cooking mouth (2) side is provided with after-flame air port (7) on cooking heating furnace main body, the after-flame air port (7) and tertiary air
Mouth (6) connection；Overfiren air port (8) is set below the heating-cooking flue (5)；
It is below the coal-fired diaphragm plate of cooking heating furnace interior second (4) pyrolytic gasification area (9), the pyrolytic gasification area (9)
It is coal-char combustion area (10) with the heating-cooking flue (5) lower section；Set and add on the furnace wall of pyrolytic gasification area (9) side
Coal mouth (11)；Volatile matter return duct (12), the volatile matter return duct (12) are vertically arranged in the pyrolytic gasification area (9)
Top is higher than coal filling hole (11), and coal-char combustion area (10) is stretched into bottom；
The coal-fired cooking heating furnace bottom is located at chimney (1) side and is provided with fire grate (13), is set below the fire grate (13)
Once air port (14)；
Burner in cooking (15) is opened up on first diaphragm plate (3), burner (15) is stamped movable cover plate (16) in the cooking；
One end that first diaphragm plate (3) is not connected with coal-fired cooking heating furnace main body furnace wall is provided with cooking heating changer lever (17),
The cooking heating changer lever (17) connects when being in cooking state with the second diaphragm plate (4).
2. coal-fired cooking and heating furnace according to claim 1, it is characterised in that the pipeline at the Venturi tube trunnion is straight
Footpath is 1/3~1/2 of diameter at smoke inlet.
3. coal-fired cooking and heating furnace according to claim 1, it is characterised in that the number ＞ 1 of the tertiary air orifice (6)
It is individual.
4. coal-fired cooking and heating furnace according to claim 1, it is characterised in that heating water is set in the chimney (1)
Heat exchanger tube (18).
5. coal-fired cooking and heating furnace according to claim 1, it is characterised in that the fire grate (13) is fixed or living
Dynamic formula；The fire grate (13) is provided with wind distributing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721171888.0U CN207162604U (en) | 2017-09-13 | 2017-09-13 | A kind of energy-saving environment protection fire coal cooking and heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721171888.0U CN207162604U (en) | 2017-09-13 | 2017-09-13 | A kind of energy-saving environment protection fire coal cooking and heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207162604U true CN207162604U (en) | 2018-03-30 |
Family
ID=61721530
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721171888.0U Expired - Fee Related CN207162604U (en) | 2017-09-13 | 2017-09-13 | A kind of energy-saving environment protection fire coal cooking and heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207162604U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686276A (en) * | 2019-10-31 | 2020-01-14 | 兖矿集团有限公司 | Graded combustion normal-pressure hot water stove and using method thereof |
| CN112879912A (en) * | 2021-02-08 | 2021-06-01 | 中国科学院过程工程研究所 | Solid waste decoupling combustion device, combustion system device and combustion method thereof |
-
2017
- 2017-09-13 CN CN201721171888.0U patent/CN207162604U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686276A (en) * | 2019-10-31 | 2020-01-14 | 兖矿集团有限公司 | Graded combustion normal-pressure hot water stove and using method thereof |
| CN112879912A (en) * | 2021-02-08 | 2021-06-01 | 中国科学院过程工程研究所 | Solid waste decoupling combustion device, combustion system device and combustion method thereof |
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Granted publication date: 20180330 |