CN201277808Y - Ceramic shuttle kiln using clean coal - Google Patents
Ceramic shuttle kiln using clean coal Download PDFInfo
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- CN201277808Y CN201277808Y CNU2008201388616U CN200820138861U CN201277808Y CN 201277808 Y CN201277808 Y CN 201277808Y CN U2008201388616 U CNU2008201388616 U CN U2008201388616U CN 200820138861 U CN200820138861 U CN 200820138861U CN 201277808 Y CN201277808 Y CN 201277808Y
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- kiln
- flue
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Abstract
The utility model discloses a clean coal ceramic shuttle kiln which comprises a kiln body (18), a kiln car (2), a gas input device (4), a sectional coal feeding device (5) and a fume extractor, wherein sectional coal combustion chambers (20) are respectively arranged at both sides of the kiln body (18), a crater (16) is arranged between the inner side of either sectional coal combustion chamber (20) and an inner cavity of the kiln body (18), and a fire barrier wall (15) is arranged at the lower end of either crater (16); working holes (6) are respectively arranged at the outer side of either sectional coal combustion chamber (20), and the sectional coal feeding device (5) is arranged at the top surfaces of the sectional coal combustion chambers (20); a side flue (14) is arranged between either side of the kiln car (2) and the kiln body (18), and a branch flue (13) is arranged in the middle of the kiln car (2) and is communicated with lateral flues and fire-attracting holes (12); a main flue (11) is arranged at the mid-lower part of the kiln body (18), an inclined flue (10) is connected between the main flue (11) and a lower circulating flue (9), and a gas injection hole (3) is arranged at the upper part of either crater (16). The utility model has good sintering quality and high discharge rate, can reduce more than 30 percent of fuel consumption cost compared with the prior kiln and can decrease more than 50 percent of flue discharge amount compared with the prior kiln.
Description
Technical field
The utility model relates to shuttle kiln, especially relates to a kind of suitable moulded coal in conjunction with coal gas mixed burning method and the moulded coal clean coal pottery shuttle kiln in conjunction with reductant ceramic roasting method.
Background technology
It is the consumption big country of main energy sources with coal that China is one, and the ceramic industry kiln mainly is to originate wide and the low coal of price is fuel.Be main furnace equipment with continous way kiln and periodic kilns the kiln again in ceramic kiln, wherein periodic kilns the kiln generally adopts the down-draft kiln form.Down-draft kiln has that volume is changeable, and floor space is little, and expenditure of construction is low, indoor temperature distribution is even, can press the product technological requirement and change burning process, is suitable for the market demand, the ceramic that can satisfy many kinds such as different sizes and height, many specifications burns till, and is suitable for middle-size and small-size ceramic enterprise and uses.But pernicious gases such as flue dust that produces when burning in down draught kiln furnace owing to coal and sulfur dioxide pollute atmosphere, particularly the southern china clay raw material of China belongs to kaolin, wherein contain more sulfate and higher iron amount, must adopt unburnt " reducing flame " calcination process, the concentration of emission and the discharge capacity of flue dust have been increased greatly, more seriously contaminated environment is damaged health.In order to reduce the pollution of fired coal combustion to atmosphere, the burning process of " coal changes oil " and " coal changes gas " has appearred recent years, remove down draught kiln furnace, reconstruct into the downdraf shuttle-type kiln of combustion gas and fuel oil, obtained the effect that reduces smoke dust discharge concentration.
Energy environment protection policy according to China, China is in the scope of cities and towns, especially replaced by natural gas and coal gas gradually by original raw coal fuel in big and medium-sized cities, thereby the Natural Gas Demand amount increasing substantially, since the restriction of China's natural gas resource and mining conditions, uneven geographical distribution of resources, the expenditure of construction height, coal gas and natural gas price are higher, can not the amount of meeting the need of market, particularly be difficult to popularize in rural area and samll cities and towns.But because combustion gas shuttle-type kiln can not adopt the spontaneous combustion of chimney stack to draw wind, and must use mechanical air blast, combustion gas and air are mixed after-combustion in burner, inject flames in the kiln.When adopting the reducing flame burning ceramics, enter reduction phase when burning till, the CO that contains 2-5% in the kiln in the flue gas, flue gas by the plug-in type gate that is arranged in the both sides flue after, directly enter atmosphere from short flue, cause the pollution of pernicious gases such as CO to atmosphere, when particularly adopting coke-stove gas to be fuel, the harmfulness of pernicious gas is bigger.And coal-fired furnace relies on tall and big chimney to adopt from drawing wind, and air lock is housed in main chimney flue at the bottom of the kiln, enters air partly from air lock and adjusts ventilation state in the kiln, and after the CO that will discharge in the kiln carries out second-time burning, enter atmosphere by chimney again.
For solving the black smoke pollution of coal-fired furnace, furnace construction is transformed.Such as carrying out the transformation of dust removal process at the various dedusters of flue Oral appliances, but these transform and fundamentally do not solve coal when burning, especially when adopting unburnt reducing flame burning, and the question of substance that pollutes.
For accomplishing coal high-efficiency, clean utilization, I am in " a kind of moulded coal is in conjunction with the reductant ceramic roasting method " of application in December calendar year 2001 and " a kind of moulded coal is in conjunction with the coal gas mixed burning method " two applications for a patent for invention of in July, 2005 application, the use on existing kiln of these two kinds of ceramic roasting methods has obtained effect preferably, for further improving the effect of these two kinds of combustion methods, I apply for a clean coal pottery shuttle kiln that is applicable to these two kinds of combustion methods now again.
The utility model content
Problem at above-mentioned existing coal-fired down draught kiln furnace existence, the utility model provide a kind of suitable moulded coal in conjunction with reductant ceramic roasting method and moulded coal in conjunction with the coal gas mixed burning method, can realize smoke elimination, depositing dust, solid sulphur, can improve and burn till quality, shorten firing time, reduce labour intensity and burn till cost, the ceramic shuttle kiln of clean coal energy-conservation and environmental protection.
The technical scheme that the technical problems to be solved in the utility model is taked is: described clean coal pottery shuttle kiln comprises the kiln body, kiln car, the coal gas input unit, the moulded coal charging gear, fume extractor, slag-draining device and residual heat using device, described kiln body is built by laying bricks or stones by refractory material and is formed, described kiln body has the inner chamber that a top is arch, be respectively arranged with the moulded coal combustion chamber in kiln body both sides, between inboard, moulded coal combustion chamber and kiln intracoelomic cavity, be arranged at intervals with bocca, be provided with firebreak in the bocca lower end, be arranged at intervals with working hole in the outside, moulded coal combustion chamber, end face is arranged at intervals with the moulded coal charging gear in the moulded coal combustion chamber, be provided with grate in bottom, moulded coal combustion chamber, be provided with the kiln car that can in the kiln body, move in kiln body bottom, described kiln car is provided with gripper shoe, gripper shoe is provided with the suction fire hole, be provided with the side flue between described kiln car both sides and the kiln body, in the middle of kiln car, be provided with branch flue, described branch flue communicates with side flue and suction fire hole, described side flue communicates with the following cycle flue of kiln body bottom surface both sides, be provided with flue collector in kiln body middle lower portion, be connected with oblique flue between flue collector and the following cycle flue, correspondence is provided with the gas injection hole on bocca top, and the gas injection hole links to each other with the coal gas input unit.
The utility model is owing to be provided with the gas injection hole in the bocca top of kiln body both sides correspondence, moulded coal adopts strong oxidizing flame burning in the combustion chamber, flame sprays in kiln, because the high temperature free oxygen that the strong oxidizing flame burning of moulded coal produces in the flame fully mixes the back in the fully burning once more of kiln intracoelomic cavity with coal gas, improved flame temperature in the kiln, make the interior Temperature Distribution of stove more even, be that the interior flue gas of kiln can discharge rapidly from kiln bottom flue collector again, make the kiln inner chamber be negative pressure state all the time, thereby can keep in the kiln body moulded coal more abundant complete with coal gas mixed combustion.The utility model not only compact conformation is firm, easy to operate, and ceramic product to burn till quality good, the product rate height of coming out of the stove, the fuel consumption cost is compared with existing kiln and can be reduced more than 30%, because the moulded coal combustion flame is soft, its blackness is littler than directly using bituminous coal, and kiln described in the utility model adopts novel mullite to build by laying bricks or stones, replace refractory brick, economize on coal more than 45%, smoke discharge amount is compared with existing kiln and has been descended more than 40%, has the characteristics of efficient, energy-conservation and environmental protection.
Description of drawings
Fig. 1 is a sectional structure schematic diagram of the present utility model,
Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1.
In the drawings, 1, steelframe body 2, kiln car 3, gas injection hole 4, coal gas input unit 5, moulded coal charging gear 6, working hole 7, slag chamber 8, grate 9, down cycle flue 10, tiltedly flue 11, flue collector 12, inhale fire hole 13, branch flue 14, side flue 15, firebreak 16, bocca 17, flame retardant coating 18, kiln body 19, furnace door 20, moulded coal combustion chamber 21, gripper shoe
The specific embodiment
In Fig. 1 and Fig. 2, described clean coal pottery shuttle kiln comprises kiln body 18, kiln car 2, coal gas input unit 4, moulded coal charging gear 5, fume extractor, slag-draining device and residual heat using device, described kiln body 18 comprises furnace door 19, kiln body and furnace door are formed by flame retardant coating 17 and the insulation material system of building, described kiln body and function steelframe body 1 is reinforced and is formed integral body, described kiln body has the square cavities that a top is arch, be arranged at intervals with moulded coal combustion chamber 20 respectively in kiln body both sides, between inboard, moulded coal combustion chamber and kiln intracoelomic cavity, be arranged at intervals with bocca 16, described bocca is rectangle, be provided with firebreak 15 in the bocca lower end, firebreak exceeds moulded coal combustion chamber end face, be arranged at intervals with working hole 6 in the outside, moulded coal combustion chamber, end face is arranged at intervals with moulded coal charging gear 5 in the moulded coal combustion chamber, be provided with grate 8 in bottom, moulded coal combustion chamber, the grate bottom is a deslagging chamber 7, be provided with the kiln car 2 that can in the kiln body, move in kiln body bottom, described kiln car is provided with gripper shoe 21, described gripper shoe is made by refractory slab, be interspersed on the gripper shoe to be provided with and inhale fire hole 12, be provided with branch flue 13 between gripper shoe bottom surface and the kiln car, be provided with side flue 14 between described kiln car both sides and the kiln body, described branch flue communicates with side flue and suction fire hole, described side flue communicates with the following cycle flue 9 of kiln body bottom surface both sides, described cycle flue down is provided with around kiln body bottom, be provided with flue collector 11 in kiln body middle lower portion, described flue collector runs through kiln body longitudinal axis, flue collector one end links to each other with chimney, be connected with oblique flue 10 between described flue collector and the following cycle flue, correspondence is provided with gas injection hole 3 on the bocca top of kiln body two middle side parts, described gas injection hole links to each other with coal gas input unit 4, and described coal gas input unit comprises blower fan, gas producer and control piper.Be the utility model (100 cubic metres of volumes) and original down-draft kiln (98 cubic metres) burning contrast situation below:
The utility model:
Caloric value: 5200 kilocalories, maximum sintering temperature: 1260 ℃
Volatile quantity: 4% (Gu sulphur gas-making type coal), 11% (sulfur fixation combustion moulded coal)
Every stove burning time: burnt till rate in 40 hours: 98.8%
Every stove coal consumption: 14 tons of smoke dust discharge concentration: 50mg/m
3
SO
2Concentration of emission: 120mg/m
3
Original down-draft kiln:
Caloric value: 5200 kilocalories, maximum sintering temperature: 1260 ℃
Volatile quantity: 24% burns till rate: 90.2%
Every stove burning time: 52 hours every stove coal consumptions: 22 tons
Smoke dust discharge concentration: 4896mg/m
3SO
2Concentration of emission: 680mg/m
3
Claims (1)
1, a kind of clean coal pottery shuttle kiln, it comprises kiln body (18), kiln car (2), coal gas input unit (4), moulded coal charging gear (5), fume extractor, slag-draining device and residual heat using device, described kiln body (18) is built by laying bricks or stones by refractory material and is formed, described kiln body has the inner chamber that a top is arch, be respectively arranged with moulded coal combustion chamber (20) in kiln body both sides, between inboard, moulded coal combustion chamber and kiln intracoelomic cavity, be arranged at intervals with bocca (16), be provided with firebreak (15) in the bocca lower end, be arranged at intervals with working hole (6) in the outside, moulded coal combustion chamber, be arranged at intervals with moulded coal charging gear (5) at moulded coal combustion chamber end face, be provided with grate (8) in bottom, moulded coal combustion chamber, be provided with the kiln car (2) that can in the kiln body, move in kiln body bottom, described kiln car is provided with gripper shoe (21), gripper shoe is provided with inhales fire hole (12), be provided with side flue (14) between described kiln car both sides and the kiln body, in the middle of kiln car, be provided with branch flue (13), described branch flue communicates with side flue and suction fire hole, described side flue communicates with the following cycle flue (9) of kiln body bottom surface both sides, be provided with flue collector (11) in kiln body middle lower portion, be connected with oblique flue (10) between described flue collector and the following cycle flue, it is characterized in that: correspondence is provided with gas injection hole (3) on bocca (16) top, and described gas injection hole links to each other with the coal gas input unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201388616U CN201277808Y (en) | 2008-10-09 | 2008-10-09 | Ceramic shuttle kiln using clean coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201388616U CN201277808Y (en) | 2008-10-09 | 2008-10-09 | Ceramic shuttle kiln using clean coal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201277808Y true CN201277808Y (en) | 2009-07-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201388616U Expired - Fee Related CN201277808Y (en) | 2008-10-09 | 2008-10-09 | Ceramic shuttle kiln using clean coal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201277808Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853656A (en) * | 2011-06-27 | 2013-01-02 | 苏州市万泰真空炉研究所有限公司 | Kiln body structure |
| CN107192265A (en) * | 2017-07-03 | 2017-09-22 | 陶朴科技（上海）有限公司 | Small-sized downward flame smokeless firewood firing |
| CN107345763A (en) * | 2017-08-29 | 2017-11-14 | 广西容县顺垚仿古建陶有限公司 | A kind of firing kiln of ancient architecture blue bricks |
| CN108131945A (en) * | 2017-12-28 | 2018-06-08 | 郏县任氏瓷业有限责任公司 | A kind of kiln car down-draft kiln |
-
2008
- 2008-10-09 CN CNU2008201388616U patent/CN201277808Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853656A (en) * | 2011-06-27 | 2013-01-02 | 苏州市万泰真空炉研究所有限公司 | Kiln body structure |
| CN107192265A (en) * | 2017-07-03 | 2017-09-22 | 陶朴科技（上海）有限公司 | Small-sized downward flame smokeless firewood firing |
| CN107345763A (en) * | 2017-08-29 | 2017-11-14 | 广西容县顺垚仿古建陶有限公司 | A kind of firing kiln of ancient architecture blue bricks |
| CN108131945A (en) * | 2017-12-28 | 2018-06-08 | 郏县任氏瓷业有限责任公司 | A kind of kiln car down-draft kiln |
| CN108131945B (en) * | 2017-12-28 | 2024-06-04 | 河南省任氏瓷业有限责任公司 | Kiln car down-draft kiln |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090722 Termination date: 20091109 |