CN102061211A - Integral purified integration system and process of lignite in cement production through catalytic mild pyrolysis - Google Patents
Integral purified integration system and process of lignite in cement production through catalytic mild pyrolysis Download PDFInfo
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Abstract
The invention discloses an integral purified integration system and process of lignite in cement production through catalytic mild pyrolysis. The system comprises a cement firing system, a crusher, a pre-drying machine, a roll squeezer, a catalyst storage bin, a drying crusher, a vertical drying cylinder and a cyclone separator. The process sequentially comprises the following steps of: (1) initially crushing raw coal of the lignite into coal briquettes; (2) pre-drying the coal briquettes and rolling to crush the coal briquettes to form coal particles; (3) crushing the coal particles to be coal powder through the drying crusher; (4) carrying out heat exchanging, drying and purification on the fine coal powder through the vertical drying cylinder; and (5) separating the purified lignite from the gas through the cyclone separator to obtain a purified lignite finished product. The invention has the advantages that the afterheat in the cement production is fully utilized so as to save energy, reduce consumption and decrease the emission of carbon dioxide; and by utilizing the original process equipment, in the cement production, an additional device is not needed, therefore, the investment is less and the profit is great, and 10,000,000 Yuan on 2500T/d cement production line can be saved every year.
Description
Technical field
The present invention relates to a kind of brown coal catalytic mild pyrolysis upgrading integrated system and technology, particularly a kind of waste gas that utilizes the cement firing system to produce, the integrated system and the technology of brown coal being carried out the classification upgrading.
Background technology
According to statistics, about 26,229 hundred million tons of whole world brown coal reserves account for 24.4% of world's coal total reserves.The lignite resource amount that China has been found that is 2,100 hundred million tons, accounts for Chinese coal and possesses 13% of stock number.Because it is very shallow apart from the face of land that brown coal form, be suitable for strip mining transformation, therefore cheap.But also there are following distinct issues in brown coal:
1, moisture height, calorific value is low, and the general water content of brown coal is between 30% to 65%, and general calorific value is about 3000kcal/kg; 2, density is low, and easy-weathering is met the water spontaneous combustion, sells radius and generally is no more than 300 kilometers.In order to address the above problem, many in the world companies have carried out brown coal drying and upgrading study on the modification, and minority technology has begun industrialization, and major part is also in the experimental study stage.
The technology of brown coal drying and dehydrating is a lot, roughly is divided into three kinds of mechanical dehydration, dehydration by evaporation and non-evaporating dehydrolysises.The mechanical dehydration technology is in coal separating plant's widespread use, dewatering machine such as thickner, vibration filter screen, disk filter etc., but the still difficult requirement that adapts to the brown coal dehydration of its processing power and dewatering efficiency.Dehydration by evaporation is representative with the fluidised bed drying technology, and sophisticated fluidization technique is used for the brown coal dehydration, and their major parts all are relative low temperature drying technologies, and drying medium is a hot flue gases.Utilize stack gas directly to contact and make it to be heated with brown coal, the moisture evaporation drying, efficient is poor.The burning-point of brown coal is lower, usually because of local superheating, makes the ature of coal variation in the drying process, controls badly also can set off an explosion.This class technological temperature is lower, structure that can permanent change coal, and the characteristic that obtains coal in case be in again in malaria or the water, can absorb the moisture that loses rapidly as sponge again.The non-evaporating dehydrolysis method is representative with the high temperature and high pressure steam dry technology, and this technological investment is big, the equipment requirements height, and enterprise is difficult to bear, and realizes comparatively difficulty of industrialization.
In a word, there is following shortcoming in the upgrading technology of existing brown coal: 1, the upgrading Technology Need of existing brown coal provides thermal source separately, and the energy consumption height has improved production cost, increases emission of carbon-dioxide; 2, in the production process of existing upgrading technology, can produce more coal tar, so not only can stop up the process for upgrading pipeline, make that also upgrading brown coal calorific value is low; 3, prior art brown coal upgrading, the hot flue gas oxygen content of utilization is higher, and the brown coal upgrading is easy to generate blast; 4, some Technology Need high pressure has increased the investment and the technical requirements of equipment, and scale of investment is big, the equipment requirements height, and enterprise is difficult to bear, and realizes comparatively difficulty of industrialization;
Summary of the invention
First purpose of the present invention is to provide integrated brown coal catalytic mild pyrolysis upgrading integrated system in a kind of manufacture of cement.
Second purpose of the present invention is to provide a kind of technology that integrated brown coal catalytic mild pyrolysis upgrading integrated system carries out the brown coal upgrading in the manufacture of cement of utilizing.
First purpose of the present invention is implemented by following technical scheme: integrated brown coal catalytic mild pyrolysis upgrading integrated system in a kind of manufacture of cement, and it includes cement firing system, crusher, the prebake machine, roll squeezer, catalyst storage bin, drying crusher, vertical dram, cyclonic separator;
The water cooler of the cooling grog of wherein said cement firing system is connected with described prebake machine by pipeline, the cement kiln end of described cement firing system is connected with described drying crusher by pipeline, described crusher, described prebake machine, described roll squeezer, described drying crusher, described vertical dram, described cyclonic separator link to each other respectively successively, and described catalyst storage bin is connected with described roll squeezer.
It also includes milling apparatus, coal grain sorting equipment, coal dust drawing-in device, dust-precipitator and apparatus for recovering; Wherein said cyclonic separator, described coal grain sorting equipment, described coal dust drawing-in device links to each other respectively successively, described milling apparatus and described coal grain sorting equipment connect into a circulation loop, described cyclonic separator is connected with described dust-precipitator, described dust-precipitator, described apparatus for recovering, described milling apparatus link to each other successively respectively and constitute a circulation loop; The coal burner of described coal dust drawing-in device and described cement firing system, or the coal burner of cement firing system links to each other with decomposing furnace.
Described milling apparatus is any one in ball mill, pebble mill, coal pulverizer, Vertical Mill or the fan mill.
Described prebake machine is a rotary dryer, any one in tower drier or the tubular type dryer.
Second purpose of the present invention implemented by following technical scheme, a kind of technology of utilizing integrated brown coal catalytic mild pyrolysis upgrading integrated system to carry out brown coal catalytic mild pyrolysis upgrading, it includes following steps successively: (1) brown coal raw coal tentatively is broken into coal cinder; (2) the predrying and broken coal-forming grain of roll-in of coal cinder; (3) coal grain drying crusher in crushing becomes coal dust; (4) fine breeze is through vertical dram heat exchange drying, upgrading; (5) the upgrading brown coal are separated from the gas at cyclonic separator, get upgrading brown coal finished product; Wherein,
(1) the brown coal raw coal tentatively is broken into coal cinder: the brown coal raw coal that will contain 15-60% moisture is put into crusher and is broken at least coal cinder less than 40mm;
(2) the predrying and broken coal-forming grain of roll-in of coal cinder: the coal cinder through described crusher in crushing enters the prebake machine, simultaneously will to be blown into described prebake machine predrying from 180 ℃ the waste gas of being higher than at least of the water cooler of the cooling grog of cement firing system, make described coal cinder be increased to 105 ℃ at least, described coal cinder and waste gas enter the roll squeezer fragmentation simultaneously, and the catalyzer in the catalyst storage bin added in described roll squeezer by 0.5～6% mass percent, in order to reduce the productive rate of coal tar, coal cinder becomes the coal grain, the coal grain accounts for 20～30% less than 0.9mm, the coal grain accounts for 65～80% less than 2mm, and all the other coal grains are greater than 2mm;
(3) coal grain drying crusher in crushing becomes coal dust: the coal grain is transported to drying crusher with gas from described roll squeezer, will be from the cement kiln end of described cement firing system enter described drying crusher greater than 260 ℃ of waste gas, the coal grain is further dry broken, dispersion in described drying crusher, obtain the fine breeze of granularity less than 1mm, fine breeze is blown into vertical dram with flue gas;
(4) the vertical dram heat exchange drying of fine breeze warp, upgrading: fine breeze enters in the described vertical dram, carries out heat exchange drying, upgrading, and moisture reduces to 5～10%;
(5) the upgrading brown coal are separated from the gas at cyclonic separator, and get upgrading brown coal finished product: the gas-entrained fine breeze enters cyclonic separator, heat exchange, gas solid separation, and must contain moisture rate is mass percent 5%-10% upgrading brown coal finished products, isolated gas emptying.
It also includes (6) off gas treatment and utilization successively; (7) grinding of upgrading brown coal finished product and classification; (8) granularity is utilized for described cement firing system less than 200 purpose upgrading brown coal finished products;
Wherein said (6) off gas treatment and utilization: the useless flue gas from described cyclonic separator gathers dust through dust-precipitator, isolated fine breeze is transported to the coal dust drawing-in device, flue gas after the dedusting feeds apparatus for recovering, a part feeds milling apparatus after described apparatus for recovering drying, and another part dustiness is less than 50mg/Nm
3Reach the exhaust gas evacuation of environmental requirement;
(7) grinding of upgrading brown coal finished product and classification: from the coal dust of described cyclonic separator after the screening of coal grain sorting equipment, granularity is sent into described milling apparatus greater than 200 purpose coal dusts, under effect, grind from described apparatus for recovering waste gas, coal dust after the grinding returns described coal grain sorting equipment, mix with the coal dust in the described coal grain sorting equipment, screen once more, waste gas enters in the described dust-precipitator and gathers dust, and granularity is sent into described coal dust drawing-in device less than 200 purpose upgrading brown coal finished products after described coal grain sorting equipment screening;
(8) granularity is utilized for described cement firing system less than 200 purpose upgrading brown coal finished products: by the coal burner that the coal dust drawing-in device will grind, upgrading brown coal finished product after the classification is sent into described cement firing system, or the coal burner of cement firing system and decomposing furnace, use for burning.
Catalyzer in the described step (2) is salt of wormwood or lime carbonate, or calcium oxide, or any one or a few combination of calcium hydroxide.Add catalyzer in order to suppress the generation of coal tar, avoid causing line clogging the long-term stability operation of assurance device owing to generating coal tar.
The invention has the advantages that (1) utilizes the manufacture of cement flue gas that gives up, and does not need to provide separately thermal source, can reduce cost, economize on resources, upgrading brown coal moisture content of finished products reduces to 5～10%, calorific value is promoted to more than the 4800kcal/kg, satisfies the calorific value requirement of manufacture of cement to fire coal; (2) add catalyzer in order to suppress the generation of coal tar in the upgrading process, avoid causing line clogging the long-term stability operation of assurance device owing to generating coal tar; (3) utilize the useless smoke pre-heating coal cinder of the weary oxygen of manufacture of cement, improve the coal cinder temperature, increase water vapour content in the flue gas, reduced the danger of brown coal combustion explosion in the upgrading brown coal process; (4) make upgrading brown coal finished product under weary oxygen atmosphere, continue to grind, can satisfy the requirement of cement firing system burner and decomposing furnace to fineness of pulverized coal, rationally handle waste gas simultaneously, dustiness, the temperature of waste gas have been reduced, make it to satisfy emission standard, make that running cost and the investment in the manufacture of cement reduces greatly; (5) the present invention does not need special technical requirement equipment, less investment, and income is big, and can save 1,000 ten thousand yuan every year for the 2500T/d cement producing line.
Description of drawings
Fig. 1 is embodiment 1, integrated brown coal catalytic mild pyrolysis upgrading integrated system synoptic diagram in the manufacture of cement.
Fig. 2 utilizes the process flow diagram that integrated brown coal catalytic mild pyrolysis upgrading integrated system carries out brown coal catalytic mild pyrolysis upgrading in embodiment 1 manufacture of cement for embodiment 2.
Fig. 3 is embodiment 3, integrated brown coal catalytic mild pyrolysis upgrading integrated system synoptic diagram in the manufacture of cement.
Fig. 4 utilizes the process flow diagram that integrated brown coal catalytic mild pyrolysis upgrading integrated system carries out brown coal catalytic mild pyrolysis upgrading in embodiment 3 manufacture of cement for embodiment 4.
Embodiment
Embodiment 1: as shown in Figure 1, integrated brown coal catalytic mild pyrolysis upgrading integrated system in the manufacture of cement, it includes cement firing system 3, crusher 6, prebake machine 7, roll squeezer 8, catalyst storage bin 18, drying crusher 9, vertical dram 10, cyclonic separator 11, coal bunker 16;
Wherein water cooler-the cooler 5 of the cooling grog of cement firing system 3 is connected with prebake machine 7 by pipeline, the cement kiln end of cement firing system 3-multistage preheater 1 is connected with drying crusher 9 by pipeline, crusher 6, prebake machine 7, roll squeezer 8, drying crusher 9, vertical dram 10, cyclonic separator 11, coal bunker 16 link to each other respectively successively, and catalyst storage bin 18 is connected with roll squeezer 8.
Utilize the technology that integrated brown coal catalytic mild pyrolysis upgrading integrated system carries out brown coal catalytic mild pyrolysis upgrading in the above-mentioned manufacture of cement, it includes following steps successively:
(1) the brown coal raw coal tentatively is broken into coal cinder: the brown coal raw coal that will contain 15-60% moisture is put into crusher 6 and is broken at least coal cinder less than 40mm;
(2) the predrying and broken coal-forming grain of roll-in of coal cinder: the coal cinder through crusher 6 fragmentations enters prebake machine 7, simultaneously will to be blown into prebake machine 7 predrying from 180 ℃ the waste gas of being higher than at least of the cooler 5 of cement firing system 3, make coal cinder be increased to 105 ℃ at least, coal cinder and waste gas enter roll squeezer 8 fragmentations simultaneously, and the catalyzer in the catalyst storage bin 18 is pressed 0.5% mass percent in roll squeezer 8, add, the coal grain accounts for 20～30% less than 0.9mm, the coal grain accounts for 65～80% less than 2mm, and all the other coal grains are greater than 2mm; Catalyzer is salt of wormwood, lime carbonate and the calcium oxide mixture by any ratio altogether.
(3) coal grain drying crusher 9 is broken into coal dust: the coal grain is transported to drying crusher 9 with gas from roll squeezer 8, will be from the multistage primary heater unit 1 of cement firing system 3 enter drying crusher 9 greater than 260 ℃ of waste gas, the coal grain is further dry broken, dispersion in drying crusher 9, obtain the fine breeze of granularity less than 1mm, fine breeze is blown into vertical dram 10 with flue gas;
(4) the vertical dram 10 heat exchange dryings of fine breeze warp, upgrading: fine breeze enters in the vertical dram 10, carries out heat exchange drying, upgrading, and moisture reduces to 5～10%;
(5) the upgrading brown coal are separated from the gas at cyclonic separator 11, get upgrading brown coal finished product: the gas-entrained fine breeze enters cyclonic separator 11, heat exchange, gas solid separation, must contain moisture rate is mass percent 5%-10% upgrading brown coal finished products, and upgrading brown coal finished product is transported in the coal bunker 16 isolated gas emptying.
Embodiment 2: integrated brown coal catalytic mild pyrolysis upgrading integrated system in the manufacture of cement, and it includes cement firing system 3, crusher 6, prebake machine 7, roll squeezer 8, catalyst storage bin 18, drying crusher 9, vertical dram 10, cyclonic separator 11, milling apparatus 12, coal grain sorting equipment 13, coal dust drawing-in device 14, dust-precipitator 15 and apparatus for recovering 17; Wherein water cooler-the cooler 5 of the cooling grog of cement firing system 3 is connected with prebake machine 7 by pipeline, the cement kiln end of cement firing system 3-multistage preheater 1 is connected with drying crusher 9 by pipeline, crusher 6, prebake machine 7, roll squeezer 8, drying crusher 9, vertical dram 10, cyclonic separator 11 links to each other respectively successively, catalyst storage bin 18 is connected with roll squeezer 8, cyclonic separator 11, coal grain sorting equipment 13, coal dust drawing-in device 14 links to each other respectively successively, milling apparatus 12 and coal grain sorting equipment 13 connect into a circulation loop, cyclonic separator 11 is connected with dust-precipitator 15, dust-precipitator 15, apparatus for recovering 17, milling apparatus 12 link to each other successively respectively and constitute a circulation loop; Coal dust drawing-in device 14 links to each other with decomposing furnace 2 with the coal burner 4 of cement firing system 3.
Milling apparatus 12 is a ball mill.
Utilize that integrated brown coal catalytic mild pyrolysis upgrading integrated system carries out brown coal catalytic mild pyrolysis process for upgrading in the above-mentioned manufacture of cement, it includes following steps successively:
(1) the brown coal raw coal tentatively is broken into coal cinder: the brown coal raw coal that will contain 15-60% moisture is put into crusher 6 and is broken at least coal cinder less than 40mm;
(2) the predrying and broken coal-forming grain of roll-in of coal cinder: the coal cinder through crusher 6 fragmentations enters prebake machine 7, simultaneously will to be blown into prebake machine 7 predrying from 180 ℃ the waste gas of being higher than at least of the cooler 5 of cement firing system 3, make coal cinder be increased to 105 ℃ at least, coal cinder and waste gas enter roll squeezer 8 fragmentations simultaneously, and the catalyzer in the catalyst storage bin 18 is pressed 6% mass percent in roll squeezer 8, add, the coal grain accounts for 20～30% less than 0.9mm, the coal grain accounts for 65～80% less than 2mm, and all the other coal grains are greater than 2mm; Catalyzer is salt of wormwood, lime carbonate and the calcium oxide mixture by any ratio altogether.
(3) coal grain drying crusher 9 is broken into coal dust: the coal grain is transported to drying crusher 9 with gas from roll squeezer 8, will be from the multistage primary heater unit 1 of cement firing system 3 enter drying crusher 9 greater than 260 ℃ of waste gas, the coal grain is further dry broken, dispersion in drying crusher 9, obtain the fine breeze of granularity less than 1mm, fine breeze is blown into vertical dram 10 with flue gas;
(4) the vertical dram 10 heat exchange dryings of fine breeze warp, upgrading: fine breeze enters in the vertical dram 10, carries out heat exchange drying, upgrading, and moisture reduces to 5～10%;
(5) the upgrading brown coal are separated from the gas at cyclonic separator 11, get upgrading brown coal finished product: the gas-entrained fine breeze enters cyclonic separator 11, heat exchange, gas solid separation, must contain moisture rate is mass percent 5%-10% upgrading brown coal finished products, and upgrading brown coal finished product delivered in the coal grain sorting equipment 13, isolated gas feeds dust-precipitator 15.
(6) off gas treatment and utilization: the useless flue gas from cyclonic separator 11 gathers dust through dust-precipitator 15, isolated fine breeze is transported to coal dust drawing-in device 14, flue gas after the dedusting feeds apparatus for recovering 17, a part feeds milling apparatus 12 after apparatus for recovering 17 dryings, and another part dustiness is less than 50mg/Nm
3Reach the exhaust gas evacuation of environmental requirement;
(7) grinding of upgrading brown coal finished product and classification: from the coal dust of cyclonic separator 11 after 13 screenings of coal grain sorting equipment, granularity is sent into milling apparatus 12 greater than 200 purpose coal dusts, under effect, grind from apparatus for recovering 17 waste gas, coal dust after the grinding returns coal grain sorting equipment 13, mix with the coal dust in the coal grain sorting equipment 13, screen once more, waste gas enters in the dust-precipitator 15 and gathers dust, and granularity is sent into coal dust drawing-in device 14 less than 200 purpose upgrading brown coal finished products after 13 screenings of coal grain sorting equipment;
(8) granularity is utilized less than 200 purpose upgrading brown coal finished product water supply mud firing systems 3: by coal burner 4 and the decomposing furnace 2 that coal dust drawing-in device 14 will grind, upgrading brown coal finished product after the classification is sent into cement firing system 3, for the use of burning.
Catalyzer in the described step (2) is lime carbonate, calcium oxide and the calcium hydroxide mixture by any ratio.
Embodiment 3: in embodiment 1 manufacture of cement in the integrated brown coal catalytic mild pyrolysis upgrading integrated system, the cement firing system can also be lepol kiln, it includes Lipple preheating machine, cooler and coal burner, wherein the water cooler of the cooling grog of cement firing system 3 is the cooler of lepol kiln, and the cement kiln end of cement firing system 3 is a Lipple preheating machine.
In embodiment 1 step (2), the catalyzer in the catalyst storage bin 18 can also add in roll squeezer 8 by 3% mass percent.
Embodiment 4: in embodiment 2 manufacture of cement in the integrated brown coal catalytic mild pyrolysis upgrading integrated system, the cement firing system can also be band well heater wet-process rotary kiln, it includes well heater, cooler and coal burner, wherein the water cooler of the cooling grog of cement firing system 3 is the cooler of band well heater wet-process rotary kiln, and the cement kiln end of cement firing system 3 is the well heater of band well heater wet-process rotary kiln.Coal dust drawing-in device 14 links to each other with the coal burner 4 of cement firing system 3.
Prebake machine 7 is the tubular type dryer.
Milling apparatus 12 is the fan mill.
In embodiment 2 steps (2), the catalyzer in the catalyst storage bin 18 can also add in roll squeezer 8 by 4% mass percent.
Claims (6)
1. integrated brown coal catalytic mild pyrolysis upgrading integrated system in the manufacture of cement is characterized in that it includes the cement firing system, crusher, prebake machine, roll squeezer, catalyst storage bin, drying crusher, vertical dram, cyclonic separator;
The water cooler of the cooling grog of wherein said cement firing system is connected with described prebake machine by pipeline, the cement kiln end of described cement firing system is connected with described drying crusher by pipeline, described crusher, described prebake machine, described roll squeezer, described drying crusher, described vertical dram, described cyclonic separator link to each other respectively successively, and described catalyst storage bin is connected with described roll squeezer.
2. integrated brown coal catalytic mild pyrolysis upgrading integrated system is characterized in that it also includes milling apparatus, coal grain sorting equipment, coal dust drawing-in device, dust-precipitator and apparatus for recovering in a kind of manufacture of cement according to claim 1; Wherein said cyclonic separator, described coal grain sorting equipment, described coal dust drawing-in device links to each other respectively successively, described milling apparatus and described coal grain sorting equipment connect into a circulation loop, described cyclonic separator is connected with described dust-precipitator, described dust-precipitator, described apparatus for recovering, described milling apparatus link to each other successively respectively and constitute a circulation loop; The coal burner of described coal dust drawing-in device and described cement firing system, or the coal burner of cement firing system links to each other with decomposing furnace.
3. integrated brown coal catalytic mild pyrolysis upgrading integrated system is characterized in that described prebake machine is a rotary dryer, any one in tower drier or the tubular type dryer in a kind of manufacture of cement according to claim 1.
4. technology of utilizing integrated brown coal catalytic mild pyrolysis upgrading integrated system to carry out brown coal catalytic mild pyrolysis upgrading, it is characterized in that it includes following steps successively: (1) brown coal raw coal tentatively is broken into coal cinder; (2) the predrying and broken coal-forming grain of roll-in of coal cinder; (3) coal grain drying crusher in crushing becomes coal dust; (4) fine breeze is through vertical dram heat exchange drying, upgrading; (5) the upgrading brown coal are separated from the gas at cyclonic separator, get upgrading brown coal finished product; Wherein,
(1) the brown coal raw coal tentatively is broken into coal cinder: the brown coal raw coal that will contain 15-60% moisture is put into crusher and is broken at least coal cinder less than 40mm;
(2) the predrying and broken coal-forming grain of roll-in of coal cinder: the coal cinder through described crusher in crushing enters the prebake machine, simultaneously will to be blown into described prebake machine predrying from 180 ℃ the waste gas of being higher than at least of the water cooler of the cooling grog of cement firing system, make described coal cinder be increased to 105 ℃ at least, described coal cinder and waste gas enter the roll squeezer fragmentation simultaneously, and the catalyzer in the catalyst storage bin added in described roll squeezer by 0.5～6% mass percent, the coal grain accounts for 20～30% less than 0.9mm, the coal grain accounts for 65～80% less than 2mm, and all the other coal grains are greater than 2mm;
(3) coal grain drying crusher in crushing becomes coal dust: the coal grain is transported to drying crusher with gas from described roll squeezer, will be from the cement kiln end of described cement firing system enter described drying crusher greater than 260 ℃ of waste gas, the coal grain is further dry broken, dispersion in described drying crusher, obtain the fine breeze of granularity less than 1mm, fine breeze is blown into vertical dram with flue gas;
(4) the vertical dram heat exchange drying of fine breeze warp, upgrading: fine breeze enters in the described vertical dram, carries out heat exchange drying, upgrading, and moisture reduces to 5～10%;
(5) the upgrading brown coal are separated from the gas at cyclonic separator, and get upgrading brown coal finished product: the gas-entrained fine breeze enters cyclonic separator, heat exchange, gas solid separation, and must contain moisture rate is mass percent 5%-10% upgrading brown coal finished products, isolated gas emptying.
5. according to the described a kind of technology of utilizing integrated brown coal catalytic mild pyrolysis upgrading integrated system to carry out brown coal catalytic mild pyrolysis upgrading of claim 4, it is characterized in that it also includes (6) off gas treatment and utilization successively; (7) grinding of upgrading brown coal finished product and classification; (8) granularity is utilized for described cement firing system less than 200 purpose upgrading brown coal finished products;
Wherein said (6) off gas treatment and utilization: the useless flue gas from described cyclonic separator gathers dust through dust-precipitator, isolated fine breeze is transported to the coal dust drawing-in device, flue gas after the dedusting feeds apparatus for recovering, a part feeds milling apparatus after described apparatus for recovering drying, and another part dustiness is less than 50mg/Nm
3Reach the exhaust gas evacuation of environmental requirement;
(7) grinding of upgrading brown coal finished product and classification: from the coal dust of described cyclonic separator after the screening of coal grain sorting equipment, granularity is sent into described milling apparatus greater than 200 purpose coal dusts, under effect, grind from described apparatus for recovering waste gas, coal dust after the grinding returns described coal grain sorting equipment, mix with the coal dust in the described coal grain sorting equipment, screen once more, waste gas enters in the described dust-precipitator and gathers dust, and granularity is sent into described coal dust drawing-in device less than 200 purpose upgrading brown coal finished products after described coal grain sorting equipment screening;
(8) granularity is utilized for described cement firing system less than 200 purpose upgrading brown coal finished products: by the coal burner that the coal dust drawing-in device will grind, upgrading brown coal finished product after the classification is sent into described cement firing system, or the coal burner of cement firing system and decomposing furnace, use for burning.
6. according to the described a kind of technology of utilizing integrated brown coal catalytic mild pyrolysis upgrading integrated system to carry out brown coal catalytic mild pyrolysis upgrading of claim 4, it is characterized in that, catalyzer in the described step (2) is salt of wormwood or lime carbonate, or calcium oxide, or any one or a few combination of calcium hydroxide.
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| CN103980976A (en) * | 2014-05-27 | 2014-08-13 | 太原理工大学 | Method for implementing catalytic upgrading of lignite through microwave radiation |
| CN104326688A (en) * | 2014-09-28 | 2015-02-04 | 海拉尔蒙西水泥有限公司 | System and method for calcining cement clinker through lignite safely in large amount |
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| CN105091546A (en) * | 2014-05-20 | 2015-11-25 | 天华化工机械及自动化研究设计院有限公司 | Generator set high-water-content and low-heating-value lignite drying and water recycling method and device |
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| US5887514A (en) * | 1995-09-22 | 1999-03-30 | Maschinenfabrik J. Dieffenbacher Gmbh & Co. | Method, filter press and control device for reducing the water content of solid materials and/or sludges |
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| CN103673508A (en) * | 2012-09-05 | 2014-03-26 | 天华化工机械及自动化研究设计院有限公司 | Method for drying, screening and collecting graphite powder |
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| CN103539369A (en) * | 2013-11-05 | 2014-01-29 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | Method and system for drying Calcium silicon slag and reducing alkali |
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| CN105091546A (en) * | 2014-05-20 | 2015-11-25 | 天华化工机械及自动化研究设计院有限公司 | Generator set high-water-content and low-heating-value lignite drying and water recycling method and device |
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| CN103980976B (en) * | 2014-05-27 | 2015-08-12 | 太原理工大学 | A kind of microwave radiation realizes the method for brown coal catalysis upgrading |
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| CN104326688A (en) * | 2014-09-28 | 2015-02-04 | 海拉尔蒙西水泥有限公司 | System and method for calcining cement clinker through lignite safely in large amount |
| CN104326688B (en) * | 2014-09-28 | 2016-08-24 | 海拉尔蒙西水泥有限公司 | A kind of a large amount of, system and method for safe utilization brown coal calcination of cement clinker |
| CN104762097A (en) * | 2015-04-13 | 2015-07-08 | 陕西煤业化工集团神木天元化工有限公司 | Rotary furnace low-order powdered coal pyrolysis upgrading method with coal gas circulation |
| CN112408823A (en) * | 2019-08-20 | 2021-02-26 | 中国科学院工程热物理研究所 | Fuel supply system and method for industrial kiln equipment and industrial kiln equipment |
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