CN109666524A - Pure anthracite and its production method and the production line used - Google Patents
Pure anthracite and its production method and the production line used Download PDFInfo
- Publication number
- CN109666524A CN109666524A CN201910015035.5A CN201910015035A CN109666524A CN 109666524 A CN109666524 A CN 109666524A CN 201910015035 A CN201910015035 A CN 201910015035A CN 109666524 A CN109666524 A CN 109666524A
- Authority
- CN
- China
- Prior art keywords
- coal gas
- low temperature
- coal
- vapourizing furnace
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 239000003830 anthracite Substances 0.000 title claims abstract description 40
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 239000003034 coal gas Substances 0.000 claims abstract description 83
- 239000003245 coal Substances 0.000 claims abstract description 63
- 238000009834 vaporization Methods 0.000 claims abstract description 35
- 230000008016 vaporization Effects 0.000 claims abstract description 35
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 27
- 239000001301 oxygen Substances 0.000 claims abstract description 27
- 238000001704 evaporation Methods 0.000 claims abstract description 24
- 230000008020 evaporation Effects 0.000 claims abstract description 22
- 239000000779 smoke Substances 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 238000006213 oxygenation reaction Methods 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 235000019504 cigarettes Nutrition 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 abstract description 2
- 238000005273 aeration Methods 0.000 abstract description 2
- 239000002802 bituminous coal Substances 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 239000005864 Sulphur Substances 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 238000003915 air pollution Methods 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000009838 combustion analysis Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L9/00—Treating solid fuels to improve their combustion
- C10L9/08—Treating solid fuels to improve their combustion by heat treatments, e.g. calcining
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/04—Raw material of mineral origin to be used; Pretreatment thereof
Abstract
Pure anthracite is that the low-temperature vaporization coal gas in raw coal is shifted to an earlier date heating evaporation to come out, to obtain pure anthracite.Production method: raw coal is heated, and low-temperature vaporization coal gas is evaporated in advance, to obtain pure anthracite.Production line includes low temperature coal gas vapourizing furnace.Conveyer belt passes through.There is low temperature coal gas evaporation shield cover in low temperature coal gas vapourizing furnace around conveyer belt portion outboard.Surface is provided with multiple low-temperature vaporization gas-fireds hole.There is oxygenation blower outside low temperature coal gas vapourizing furnace, oxygenation fan outlet pipeline simultaneously connects low temperature coal gas evaporation shield cover oxygen intake.Low temperature coal gas vapourizing furnace fills out coal hole, temperature sensor.There are smoke exhaust barrel and desulfurizer in cigarette outlet.Discharging end has watering cooling device.It is all to process pure anthracite through this production line, any aeration device is not used in traditional commercial coal stove or medium and small formed coal stove, is directly burnt by nature oxygen supply, will thoroughly be solved the problems, such as anoxycausis sulfide over-emitting black exhaust.
Description
Technical field
The invention belongs to pure anthracite production field, in particular to pure anthracite and its production method and the production used
Line.Pure anthracite is that the low-temperature vaporization coal gas in raw coal is shifted to an earlier date heating evaporation to come out, to obtain pure anthracite, is exactly made
With traditional civilian sooty coal furnace or medium and small formed coal stove, the coal for the not over-emitting black exhaust of burning under conditions of being supplied oxygen using gravity-flow ventilation is pure nothing
Bituminous coal.
All pure anthracites for producing and processing out by this pure anthracite production line, can be traditional civilian
Any aeration device is not used in coal stove or medium and small formed coal stove, is directly burnt by oxygen supply naturally, will thoroughly be solved to lack
Oxygen burning has the problem of sulfide over-emitting black exhaust.
Background technique
From ancient times to the present, no matter all Small Civil sooty coal furnaces or medium and small formed coal stove use which kind of in the burning use of time
Raw coal can generate different degrees of black smoke, and the different sulphur of content can be all discharged into atmosphere together with black smoke in coal,
Cause air pollution.
It is demonstrated experimentally that about 10-25%(weight) coal, it is straight in the form of black smoke in the case where anoxic is not burnt
Run in and is put into atmosphere.
It is defined from the angle of over-emitting black exhaust, current all raw coals are to have bituminous coal, are broadly divided into long bituminous coal, metabituminous coal
Or short bituminous coal (commonly called anthracite).
The reason of producing thick smoke when coal combustion analysis:
(1) coal combustibles: no matter in which kind of raw coal containing there are three types of combustibles.
1, the low-temperature vaporization coal gas containing different proportion (such as: carbon monoxide, methane, hydrogen etc.),
(vapourizing temperature: 200~600 DEG C), the vaporization of the part is easy and speed is fast, and when burning supplies oxygen by nature, the supply of oxygen
Satisfaction is hardly resulted in, over-emitting black exhaust is particularly easy to.
2, contain a certain proportion of high-temperature evaporation fuel (vapourizing temperature: 600~1000 DEG C), the vaporization rate phase of the part
To slow, when burning, supplies oxygen by nature, and the supply of oxygen can be met substantially, be not easy over-emitting black exhaust.
3, superhigh temperature vaporization fuel (such as: industrial coke) (vapourizing temperature is more than 1000 DEG C), the portion
Point vaporization rate it is slow, supplied oxygen by nature when burning, the supply of oxygen can be met, and flare is Lan Huomiao when burning.
(2) the reason of producing thick smoke when coal burns with all combustibles is the same, and is all because lacking
Oxygen is unable to full combustion and is showed in the form of over-emitting black exhaust.
It (three), will quick vapour once when 200 DEG C or more heated for the low-temperature vaporization coal gas in coal
Change, the speed of vaporization is far longer than the feed speed of oxygen in air, just will form anoxycausis, and one causes fuel unrestrained
Take, secondly causing atmosphere pollution.
It (four), can under 200~600 DEG C of states if contained low-temperature vaporization coal gas ratio is lesser in coal
The evaporating capacity of combustion gas body is smaller, supports naturally by air, although oxygen-supplying amount is inadequate, the black smoke arranged is opposite to be lacked
It is some, therefore traditionally this kind of coal is referred to as anthracite.If contained low-temperature vaporization coal gas ratio is excessively high in coal, 200~600
Under DEG C state, the evaporating capacity of fuel gas is excessive, and vaporization rate is too fast, and relying solely on natural oxygen in air is much to meet
The demand of the coal gas for being evaporated vaporization not, it will form serious anoxycausis state, it is most can be coal-fired
Gas in the case where no burning, is directly discharged in atmosphere under conditions of lacking oxygen in the form of black dense smoke, so
Kind coal is commonly known as long bituminous coal or big bituminous coal.
Summary of the invention
The object of the present invention is to provide pure anthracite, pure anthracite production method and its production line used, production methods
Simply, convenient using equipment, easy to operate, easy industrialized production.
The technical solution adopted is that:
Pure anthracite is that the low-temperature vaporization coal gas in raw coal is shifted to an earlier date heating evaporation to come out, to obtain pure anthracite.
Pure anthracite production method:
Raw coal is heated, low-temperature vaporization coal gas is evaporated in advance, to obtain pure anthracite.
The heating temperature is 550~1000 DEG C.
Enough air or oxygen mix burning is added in the low-temperature vaporization coal gas being evaporated.
Low-temperature vaporization coal gas supplements needed for low temperature coal gas vapourizing furnace in the heat that low temperature coal gas vapourizing furnace burns
Heat.Reduce the coal consumption amount of low temperature coal gas vapourizing furnace.
Specific steps are as follows:
(1) raw coal is passed through into low temperature coal gas vapourizing furnace of the temperature at 550~700 DEG C by coal conveyer belt,
Time is about at 15-20 minutes or so.If the time is about at 10-15 minutes or so at 700-1000 DEG C.
(2) the low-temperature vaporization coal gas being vaporized is after the oxygen conveyed by oxygenation blower mixes naturally, low
Temperature vaporization coal gas burner port automatic combustion, one accounts about 10~25%(weight of coal total amount) low-temperature vaporization coal gas
Burning can directly fill up furnace temperature institute calorific requirement, reduce coal consumption amount needed for keeping furnace temperature.Secondly the gas after full combustion
Body is discharged by smoke exhaust barrel together.
(3) heating coal used in low temperature coal gas vapourizing furnace can be by finished pure anthracite, by filling out coal hole
It is added.
(4) it is exported in smoke exhaust barrel and increases desulfurizer (vapourizing temperature of sulphur is 444.7 DEG C), by discharge
Sulfur dioxide and sulfur trioxide are collected in the form of calcium sulfate, reduce pollution of the sulphur to air.
(5) it is equipped with watering cooling device in the exit of low temperature coal gas vapourizing furnace, pure anthracite is enable to reach
To environment temperature, to facilitate storage and transport.
Pure anthracitic production line.
Technical points are: including low temperature coal gas vapourizing furnace.
Conveyer belt passes through low temperature coal gas vapourizing furnace.
Low temperature coal gas evaporation shield cover is equipped with around the conveyer belt portion outboard in low temperature coal gas vapourizing furnace.
Low temperature coal gas evaporation shield cover surface offers multiple low-temperature vaporization gas-fireds hole.
At least one oxygenation blower is equipped on the outside of low temperature coal gas vapourizing furnace, each oxygenation fan outlet pipeline penetrates low temperature
Coal gas vapourizing furnace, and connect the oxygen intake of low temperature coal gas evaporation shield cover.
Low temperature coal gas vapourizing furnace, which offers, fills out coal hole.
Low temperature coal gas vapourizing furnace has cleaning door.Low temperature coal gas vapourizing furnace is additionally provided with temperature sensor.
The cigarette outlet of low temperature coal gas vapourizing furnace is equipped with smoke exhaust barrel, and outlet is equipped with desulfurizer.
Conveyer belt discharging end is equipped with watering cooling device.
Pure anthracitic production procedure (as shown in Figure 1): production line is continuous large-scale production.
The technical program is to allow various raw coals, and the pure anthracite produced by this processing method is in various differences
It burns, is supplied oxygen by gravity-flow ventilation, not over-emitting black exhaust in the civilian sooty coal furnace of model or medium and small formed coal stove, become really pure smokeless
Coal, and most sulfur dioxide in coal is collected, reduce pollution of the sulphur to air.
The advantage is that:
(1) environment protection significance:
Since the mankind have found coal, due to the flammable of coal itself but the uncontrollable factor of oxygen supply, in civilian sooty coal furnace or small-sized
In the use of coal stove, in terms of never solving the problems, such as anoxycausis, our living environment is directly jeopardized, people is endangered
Health, directly influence the progress and development of human society.Pure anthracite is necessity that people improve living environment
Product is the optimal selection that environmental protection is carried out instead of various raw coals.
(2) market significance:
1, various coals currently on the market, in civilian sooty coal furnace or medium and small formed coal stove in use, about having
10~25%(weight) the coal quality of various regions coal (different) there is no burning, but be directly discharged in the form of black smoke
In the middle of atmosphere, air pollution is not only caused, also creates economic loss in varying degrees.
2, coal its cost performance in various exothermic materials is highest fuel, is not replaced.It is same to generate 1
Ten thousand kilocalorie heats, raw coal cost need 1~1.3 yuan, and pure anthracite cost needs 1.5 yuan or so, and liquefied gas cost needs
7 yuan are wanted, electricity needs 11.6 degree (civilian electric 6 yuan, 12 yuan of commercial power).
3, according to the environmental requirement of national environmental protection policy and various regions, pure anthracite is the best substitution of various raw coals
Product, market demand is huge, contains huge commercial value.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of production line of the present invention.
Low temperature coal gas vapourizing furnace 1, conveyer belt 2, low temperature coal gas evaporation shield cover 3, low-temperature vaporization gas-fired hole 4, oxygenation
Blower 5 fills out coal hole 6, smoke exhaust barrel 7, desulfurizer 8, furnace hearth wall 9, watering cooling device 10.
Specific embodiment
Embodiment 1
Pure anthracite is that the low-temperature vaporization coal gas in raw coal is shifted to an earlier date heating evaporation to come out, to obtain pure anthracite.
Raw coal is placed under 600 DEG C of states and is heated, low-temperature vaporization coal gas is evaporated in advance, to obtain pure nothing
Bituminous coal.
Enough oxygen mix burnings are added in the low-temperature vaporization coal gas being evaporated.
Method particularly includes:
Raw coal is placed on 2 feeding end of conveyer belt (right side as shown in the figure), is carried into the low temperature coal gas of low temperature coal gas vapourizing furnace 1
In evaporation shield cover 3, multiple oxygenation blowers 5 are blown into oxygen, fill out coal hole 6 and insert initial fuel, such as anthracite is lighted, keep furnace
Temperature heats low-temperature vaporization coal gas in raw coal and is evaporated at 600 DEG C, the full combustion at low-temperature vaporization gas-fired hole 4.
Conveyer belt 2 operates always, raw coal from the outlet of low temperature coal gas vapourizing furnace 1 and low temperature coal gas evaporation shield cover 3
(entire heating process was for about 18 minutes or so) are carried out at (outlet of low temperature coal gas vapourizing furnace 1), pure anthracite is obtained, is passing
2 discharging end of band watering cooling device 10 is sent, the watering cooling of pure anthracite is given.
After obtaining pure anthracite, then pure anthracite can be inserted filling out in coal hole 6.
Exhaust gas after burning is discharged from smoke exhaust barrel 7 together with the coal combustion exhaust in burner hearth, handles by desulfurizer 8.Have
Known source of oxygen is supplied oxygen to oxygenation blower 5.
Pure anthracitic production line, including low temperature coal gas vapourizing furnace 1.
Conveyer belt 2 passes through low temperature coal gas vapourizing furnace 1.
Low temperature coal gas evaporation shield cover 3 is equipped with around 2 portion outboard of conveyer belt in low temperature coal gas vapourizing furnace 1.
Low temperature coal gas evaporation shield cover 3 is rectangular shape, both-side opening.
Three surfaces in front and back offer multiple low-temperature vaporization gas-fireds hole 4 on low temperature coal gas evaporation shield cover 3.Transmission
Furnace hearth wall 9 with 2 bottoms is closed state.
Multiple oxygenation blowers 5 are equipped on the outside of low temperature coal gas vapourizing furnace 1, each 5 export pipeline of oxygenation blower penetrates low temperature
Coal gas vapourizing furnace 1, and connect the oxygen intake of low temperature coal gas evaporation shield cover 3.
Low temperature coal gas vapourizing furnace 1, which offers, fills out coal hole 6.
Furnace hearth wall 9 has cleaning door.Low temperature coal gas vapourizing furnace 1 is additionally provided with temperature sensor.
The cigarette outlet of low temperature coal gas vapourizing furnace 1 is equipped with smoke exhaust barrel 7, interior to be equipped with blower, is equipped with desulfurization in the outlet of smoke exhaust barrel 7 and fills
8 are set, this is known technology.
2 discharging end of conveyer belt in 1 outside of low temperature coal gas vapourizing furnace is equipped with watering cooling device 10, drops to pure anthracite
Temperature.(watering cooling device 10 is known technology.)
3 bottom of low temperature coal gas evaporation shield cover is supported on 1 furnace hearth wall 9 of low temperature coal gas vapourizing furnace.
Conveyer belt 2 is supported on 1 furnace hearth wall 9 of low temperature coal gas vapourizing furnace.
Embodiment 2
Embodiment 2 is substantially the same manner as Example 1, the difference is that: heating temperature is 550 DEG C.Heating 20 minutes.
Embodiment 3
Embodiment 3 is substantially the same manner as Example 1, the difference is that: heating temperature is 700 DEG C.Heating 15 minutes.
Embodiment 4
Embodiment 4 is substantially the same manner as Example 1, the difference is that: heating temperature is 800 DEG C.Heating 12 minutes.
Embodiment 5
Embodiment 5 is substantially the same manner as Example 1, the difference is that: heating temperature is 1000 DEG C.Heating 10 minutes.
Claims (9)
1. pure anthracite, it is characterised in that: be that the low-temperature vaporization coal gas in raw coal is shifted to an earlier date heating evaporation to come out, to obtain
Pure anthracite.
2. pure anthracite production method, it is characterised in that include the following steps:
Raw coal is heated, low-temperature vaporization coal gas is evaporated in advance, to obtain pure anthracite.
3. pure anthracite production method according to claim 2, it is characterised in that include the following steps:
The heating temperature is 550~1000 DEG C.
4. pure anthracite production method according to claim 2, it is characterised in that include the following steps:
Enough air or oxygen mix burning is added in the low-temperature vaporization coal gas being evaporated.
5. pure anthracite production method according to claim 2, it is characterised in that include the following steps:
Low-temperature vaporization coal gas is required to supplement low temperature coal gas vapourizing furnace (1) in the heat that low temperature coal gas vapourizing furnace (1) burning obtains
Heat.
6. pure anthracitic production line, it is characterised in that: including low temperature coal gas vapourizing furnace (1);
Conveyer belt (2) passes through low temperature coal gas vapourizing furnace (1);
Low temperature coal gas evaporation shield cover (3) is equipped with around conveyer belt (2) portion outboard in low temperature coal gas vapourizing furnace (1);
Low temperature coal gas evaporation shield cover (3) surface offers multiple low-temperature vaporization gas-fireds hole (4);
At least one oxygenation blower (5) is equipped on the outside of low temperature coal gas vapourizing furnace (1), each oxygenation blower (5) export pipeline is worn
Enter low temperature coal gas vapourizing furnace (1), and connects the oxygen intake of low temperature coal gas evaporation shield cover (3);
Low temperature coal gas vapourizing furnace (1), which offers, fills out coal hole (6).
7. pure anthracitic production line according to claim 6, it is characterised in that:
Low temperature coal gas vapourizing furnace (1) is additionally provided with temperature sensor.
8. pure anthracitic production line according to claim 6, it is characterised in that:
The cigarette outlet of low temperature coal gas vapourizing furnace (1) is equipped with smoke exhaust barrel (7), and smoke exhaust barrel (7) outlet is equipped with desulfurizer (8).
9. pure anthracitic production line according to claim 6, it is characterised in that:
Conveyer belt (2) discharging end is equipped with watering cooling device (10).
Priority Applications (1)
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CN201910015035.5A CN109666524A (en) | 2019-01-08 | 2019-01-08 | Pure anthracite and its production method and the production line used |
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CN201910015035.5A CN109666524A (en) | 2019-01-08 | 2019-01-08 | Pure anthracite and its production method and the production line used |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114317056A (en) * | 2022-02-14 | 2022-04-12 | 三门峡市精捷自动化设备有限公司 | Granular coal heat treatment furnace |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5241915A (en) * | 1992-08-10 | 1993-09-07 | Consolidated Natural Gas Service Company, Inc. | Apparatus and method to improve pulverizer and reduce NOx emissions in coal-fired boilers |
CN102250633A (en) * | 2011-06-16 | 2011-11-23 | 西安三瑞实业有限公司 | Method for improving quality of brown coal with externally heated rotary furnace |
CN209872891U (en) * | 2019-01-08 | 2019-12-31 | 孙玉国 | Production line of pure anthracite |
-
2019
- 2019-01-08 CN CN201910015035.5A patent/CN109666524A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5241915A (en) * | 1992-08-10 | 1993-09-07 | Consolidated Natural Gas Service Company, Inc. | Apparatus and method to improve pulverizer and reduce NOx emissions in coal-fired boilers |
CN102250633A (en) * | 2011-06-16 | 2011-11-23 | 西安三瑞实业有限公司 | Method for improving quality of brown coal with externally heated rotary furnace |
CN209872891U (en) * | 2019-01-08 | 2019-12-31 | 孙玉国 | Production line of pure anthracite |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114317056A (en) * | 2022-02-14 | 2022-04-12 | 三门峡市精捷自动化设备有限公司 | Granular coal heat treatment furnace |
CN114317056B (en) * | 2022-02-14 | 2024-04-02 | 三门峡市精捷自动化设备有限公司 | Granular coal body heat treatment furnace |
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