CN102564067A - Rotary cylindrical drier catalyst drying method and equipment - Google Patents
Rotary cylindrical drier catalyst drying method and equipment Download PDFInfo
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- CN102564067A CN102564067A CN2010105844728A CN201010584472A CN102564067A CN 102564067 A CN102564067 A CN 102564067A CN 2010105844728 A CN2010105844728 A CN 2010105844728A CN 201010584472 A CN201010584472 A CN 201010584472A CN 102564067 A CN102564067 A CN 102564067A
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Abstract
The invention relates to a rotary cylindrical drier catalyst drying method and equipment. The method is characterized in that a catalyst enters a constant feeder from a discharge port at the bottom of a catalyst storage bin, is metered in the constant feeder and then enters a scattering unit of a rotary cylindrical drier; a fuel gas is combusted by the air blown into a hot blast stove by a combustion fan to generate high temperature flue gas to be carried into the rotary cylindrical drier; the catalyst scattered in the rotary cylindrical drier comes into full contact with the flue gas to form co-current flow and dry a material; and the flue gas cooled after contact with the catalyst carries the vapor evaporated from the catalyst and catalyst dust, is discharged from a tail gas outlet of the rotary cylindrical drier, and enters a bag dust collector for gas-solid separation. The invention adopts the flue gas generated by powdered coal fuel gas combustion as heat source, dries the material by direct contact and heat transfer, has partial drying tail gas entering a drying unit to serve as a heat source for drying, realizes recycling, and has energy-saving emission-reducing effects.
Description
Technical field
The coal system of the present invention relates to oil catalyst (coal) technical field of drying belongs to a kind of drying means and equipment thereof of coal dust.This method and equipment thereof also are applicable to the drying of the granular material that other is inflammable, explosive.
Background technology
The total energy characteristic of China is " rich coal, few oil, gas is arranged ".China's total energy consumption figure reached 11.783 hundred million tons of oil equivalents in 2003, and wherein, coal accounts for 67.86%, and oil accounts for 23.35%, and natural gas accounts for 2.5%, and water power accounts for 5.43%, and nuclear energy accounts for 0.83%.Coal is big and price is relatively stable because of its reserves, becomes the preferred fuels of Chinese power generation.
Coal system oil is to be raw material with the coal, through chemical process, produces the coal clean utilization technology of oil product such as diesel oil, gasoline, aviation kerosine and petrochemicals.Development coal system oil tech; Produce synthetic gasoline with coal as raw material; Not only can gradually reduce China the international market oil is relied on, alleviates the China's future petroleum shortage of resources, guarantee national energy security, and can alleviate the severe contamination of the direct burning of coal greatly environment.Therefore, coal system oil has become the strategic choice that China solves the Oil Safety problem, also is the very important decision of China's energy strategy adjustment.Coal oil man journey has been classified as one of 12 big high-tech engineerings of Tenth Five-Year Plan Period state key organizing and implementing, the research of tackling key problems.Former State Economic and Trade Commission proposes in the coal industry Tenth Five-year plan, and Tenth Five-Year Plan Period, China will advance the development and application of coal liquefaction.On June 30th, 2004, it is main body that State Council has put into effect with coal, be " the medium-term and long-term development planning outline of the energy " of principle with energy-conservation, lists Coal Chemical Industry in China medium-term and long-term energy development strategy development emphasis.
On August 25th, 2004; First coal direct liquefaction project of China of being born by the maximum group of Shenhua of coal energy enterprise of China formally puts into operation in Erdos, the Inner Mongol; Revolving drum drier catalyst (coal) drying means is the project assorted catalyst drying process method of Shenhua coal direct liquefaction, and this technology is equipped with and can the catalyst (coal) that the coal direct liquefaction project is used be dried to the catalyst necessary requirement.
Summary of the invention
The present invention studies through repetition test according to the parameter of materials that group of Shenhua provides, and the method for the dry fine coal of a kind of revolving drum drier catalyst is provided.It utilizes nucleus equipment---revolving drum drier; The material characteristic of combined catalyst (coal), experimental study and dry experience; The flue gas that utilizes the pulverized coal fuel gas firing to produce is thermal source; Adopt the mode of direct and material transmission of heat by contact to carry out drying, adopt catalyst (coal) moisture of tandem control mode control drying machine outlet fine coal.
Another object of the present invention provides the employed equipment of this method of enforcement.
The object of the invention can be realized through following technical scheme:
The method of the dry fine coal of a kind of revolving drum drier catalyst the steps include:
The catalyst that a is dried from upper reaches workshop section is stored in the catalyst bunker, and catalyst gets into constant feeder by catalyst storage bunker bottom feed opening, and the dispersing device that after the constant feeder metering, gets into revolving drum drier is broken up;
The air that b is blasted hot-blast stove by combustion fan from the fuel gas of public engineering station or fuel oil or solid fuel in hot-blast stove fully burning produce high-temperature flue gas; Simultaneously high-temperature flue gas be recycled the high humidity that blower fan blasts hot-blast stove and divide the dried tail gas hybrid cooling, the flue gas after the cooling is recycled blower fan and introduces the dispersing device into revolving drum drier;
The catalyst that c is broken up by dispersing device under the flue gas effect, is brought into revolving drum drier from hot-blast stove fume; The catalyst of in revolving drum drier, being broken up fully contacts and fluidized drying with flue gas; Moisture in the material is by constantly evaporation; Material moves to Way out from the drying machine inlet; When material arrives the revolving drum drier outlet, become qualified product, after rotary valve draws off, be delivered to next workshop section from the revolving drum drier feed opening;
D contacts flue gas after the cooling and carries the steam that evaporates in the catalyst and catalyst dust and discharge the back by the outlet of revolving drum drier tail gas and get in the sack cleaner and carry out gas solid separation with catalyst; The dust deposit that separates draws off through star-like dispenser to the cloth envelop collector bottom, is delivered to next workshop section; Flue gas after being purified and steam are after the circulating fan sucking-off, and a part causes the safety place discharging, and a part is recycled to get in the revolving drum drier after blower fan blasts hot-blast stove heating back and the flue gas of hot-blast stove generation mixes carries out drying as thermal source.
The required thermal source of above-mentioned drying is the high-temperature flue gas that produces behind fuel gas, fuel oil or the solid fuel ignition.
Proportion control is adopted in the burning of above-mentioned hot-blast stove, after ratio calculation, draws required combustion-supporting air quantity by the fuel gas flow, and combustion-supporting air flow control hot-blast stove inlet combustion air valve opening is arranged again.
The discharging of above-mentioned dried tail gas is to realize according to the pressure control discharge capacity flue control valve of revolving drum drier outlet.
Above-mentioned through the oxygen content in the strict control of the mode drying system of topping up (nitrogen) in system; System is respectively equipped with oxygen content detector in hot-blast stove outlet and cloth envelop collector outlet; The nitrogen of controlling hot-blast stove outlet and revolving drum drier outlet according to the oxygen content of hot-blast stove outlet and cloth envelop collector outlet respectively replenishes valve opening; Guarantee that system is lower than in oxygen content under 8% the condition and move, guarantee the safety of system.
The employed equipment of a kind of revolving drum drier catalyst (coal) drying means comprises:
The catalyst dosage device that one cover links to each other with drying unit, catalyst is made up of catalyst bunker and constant feeder, is used for being quantitatively transferred to catalyst (coal) in the revolving drum drier;
The hot blast generating unit that one cover links to each other with drying unit; Mainly form by combustion fan, hot-blast stove; Fuel gas is brought into revolving drum drier by the air burning generation high-temperature flue gas that combustion fan blasts hot-blast stove, is used for the required flue gas of revolving drum drier dry catalyst;
One cover drying unit mainly is made up of dispersing device, revolving drum drier, rotary valve, and revolving drum drier connects dispersing device, and rotary valve is positioned at the revolving drum drier outlet, and this unit is used for catalyst (coal) drying;
The tail gas treating unit that one cover links to each other with drying unit; Mainly form by sack cleaner, circulating fan, rotary valve; Sack cleaner reclaims the dust that dry carrier gas is taken out of, and emission abatement tail gas also gets into part tail gas and to carry out drying cycles as thermal source in the revolving drum drier and use through circulating fan;
Adopt the beneficial effect of advantage of the present invention and generation to be:
(1) the part dried tail gas gets in the revolving drum drier and carries out drying as thermal source, realizes recycling, and has the effect of energy-saving and emission-reduction.
(2) hot-blast stove mixes warm elegance and uses dried tail gas, can reduce hot-blast stove outlet oxygen content and reduce the nitrogen consumption.
(3) hot-blast stove mixes warm elegance and uses dried tail gas, because the dried tail gas water content can guarantee activity of such catalysts greatly.
The catalyst that (4) will get into revolving drum drier is broken up, and has increased the heat exchange area of flue gas and catalyst, has improved drying efficiency.
(5) catalyst is broken up the back and is adopted flue gas directly to send into revolving drum drier to play catalyst is carried out pre-dried effect, improve drying efficiency.
Description of drawings
Fig. 1 process program block diagram of the present invention.
The revolving drum drier sketch map of the band disintegrating machine that Fig. 2 the present invention adopts.
The specific embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is further described again:
As shown in Figure 1, method and equipment thereof that a kind of revolving drum drier catalyst is dry are to accomplish the drying to material through following steps:
The catalyst that a is dried from upper reaches workshop section is stored in that catalyst bunker 1 is wet to divide the catalyst 25%～35% to get into constant feeder 2 by catalyst bunker 1 bottom feed opening, and dispersing device 3 quilts that get into revolving drum drier 4 through constant feeder 2 metering backs are broken up;
B is blasted hot-blast stove 6 from the fuel gas of public engineering station or fuel oil or solid fuel by combustion fan 5 air in hot-blast stove 6 fully burning produce high-temperature flue gas; Simultaneously high-temperature flue gas be recycled the high humidity that blower fan 8 blasts hot-blast stove and divide the dried tail gas hybrid cooling, the flue gas after the cooling is recycled the dispersing device 3 that blower fan 8 introduces revolving drum drier 4;
The catalyst that c is broken up by dispersing device 3 under the effect of high speed flue gas, is brought into revolving drum drier 4 from hot-blast stove 6 flue gases; The catalyst of in revolving drum drier 4, being broken up fully contacts and fluidized drying with flue gas; Moisture in the material is by constantly evaporation; Material moves to Way out from the drying machine inlet; When material arrives revolving drum drier 4 outlets, become qualified product, after rotary valve 9 draws off, be delivered to next workshop section from revolving drum drier 4 feed openings;
D contacts flue gas after the cooling and carries the steam that evaporates in the catalyst and catalyst dust and discharge the back by the outlet of revolving drum drier 4 tail gas and get in the sack cleaner 7 and carry out gas solid separation with catalyst; The dust deposit that separates draws off through star-like dispenser 10 to cloth envelop collector 7 bottoms, is delivered to next workshop section; Flue gas after being purified and steam are after circulating fan 8 sucking-offs; A part causes the safety place discharging; A part is recycled blower fan 8 and blasts hot-blast stove 6 heating back and mixes the back with flue gas that hot-blast stove 6 produces and get into that revolving drum drier 4 is interior to carry out drying as thermal source, the circulation of realization drying system.
E controls system
It mainly is to guarantee that through automaton revolving drum drier catalyst drying system safely and steadily runs for the control system, mainly is made up of burning control, dry control, exhaust emissions control, safety guard.
Burning control its mainly to act on be that the air capacity that control gets into hot-blast stove 6 when guaranteeing fuel gas completing combustion makes the oxygen content of burning back hot blast be lower than 5%, guarantee the safety of system.Ratio control is adopted in this control, the inlet through hot-blast stove 6 fuel gas after ratio calculation, control hot-blast stove 6 combustion air consumptions.
Dry control its mainly to act on be when guaranteeing drying machine entrance flue gas temperature, drying machine exit gas temperature, to reach dry requirement; Tandem control is adopted in this control, through revolving drum drier 4 entrance flue gas temperatures, exit gas temperature control hot-blast stove 6 fuel gas consumptions.
Emission control its mainly to act on be the balance that the flue gas that gets into drying unit through burning and steam discharging that drying unit produces is guaranteed drying system, be through revolving drum drier 4 control pressurer system discharge capacitys.
It is the safety of oxygen content to guarantee that drying system moves in the strict control revolving drum drier catalyst drying system that safety guard mainly acts on.Control for Oxygen Content through difference in the real-time detection drying system makes drying system nitrogen consumption minimum to the nitrogen amount that drying system replenishes when the assurance system moves under safe condition.
Claims (6)
1. the dry method of a revolving drum drier catalyst, the catalyst main component is a coal dust, it is characterized in that this method may further comprise the steps:
The fine coal catalyst that a is dried from upper reaches workshop section is stored in catalyst bunker (1); Catalyst gets into constant feeder (2) by catalyst bunker (1) bottom feed opening, and the dispersing device (3) that after constant feeder (2) metering, gets into revolving drum drier (4) is broken up;
B is blasted hot-blast stove (6) from the fuel gas of public engineering station or fuel oil or solid fuel by combustion fan (5) air in hot-blast stove (6) fully burning produce high-temperature flue gas; Simultaneously high-temperature flue gas be recycled the high humidity that blower fan (8) blasts hot-blast stove and divide the dried tail gas hybrid cooling, the flue gas after the cooling is recycled the dispersing device (3) that blower fan (8) introduces revolving drum drier (4);
The catalyst that c is broken up by dispersing device (3) under the flue gas effect, is brought into revolving drum drier (4) from hot-blast stove (6) flue gas; The catalyst of in revolving drum drier (4), being broken up fully contacts and fluidized drying with flue gas; Moisture in the material is by constantly evaporation; Material moves to Way out from the drying machine inlet; When material arrives revolving drum drier (4) outlet, become qualified product, after rotary valve (9) draws off, be delivered to next workshop section from revolving drum drier (4) feed opening;
D contacts flue gas after the cooling and carries the steam that evaporates in the catalyst and catalyst dust and discharge the back by the outlet of revolving drum drier (4) tail gas and get in the sack cleaner (7) and carry out gas solid separation with catalyst; The dust deposit that separates draws off through star-like dispenser (10) to cloth envelop collector (7) bottom, is delivered to next workshop section; Flue gas after being purified and steam are after circulating fan (8) sucking-off; A part causes the safety place discharging; After a part is recycled blower fan (8) and blasts hot-blast stove (6) heating, mixes the back with flue gas that hot-blast stove (6) produces and get into that revolving drum drier (4) is interior to carry out drying as thermal source.
2. revolving drum drier catalyst drying means according to claim 1 is characterized in that dry required thermal source is the high-temperature flue gas that produces behind fuel gas, fuel oil or the solid fuel ignition.
3. revolving drum drier catalyst drying means according to claim 1; Proportion control is adopted in the burning that it is characterized in that hot-blast stove (6); After ratio calculation, draw required combustion-supporting air quantity by the fuel gas flow, combustion-supporting air flow control hot-blast stove (6) inlet combustion air valve opening is arranged again.
4. revolving drum drier catalyst drying means according to claim 1, the discharging that it is characterized in that dried tail gas are to realize according to the pressure control discharge capacity flue control valve of revolving drum drier (4) outlet.
5. revolving drum drier catalyst drying means according to claim 1; It is characterized in that through topping up in system---the oxygen content in the strict control of the mode drying system of nitrogen; System is respectively equipped with oxygen content detector in hot-blast stove (6) outlet and cloth envelop collector (7) outlet; The nitrogen of controlling hot-blast stove outlet (6) and revolving drum drier (4) outlet according to the oxygen content of hot-blast stove (6) outlet and cloth envelop collector (7) outlet respectively replenishes valve opening; Guarantee that system is lower than in oxygen content under 8% the condition and move, guarantee the safety of system.
6. the employed equipment of a kind of revolving drum drier catalyst drying means as claimed in claim 1 is characterized in that:
The catalyst dosage device that one cover links to each other with drying unit mainly is made up of catalyst bunker (1) and constant feeder (2), and catalyst bunker (1) bottom is connected with constant feeder (2), is used for being quantitatively transferred to catalyst in the drying unit;
The hot blast generating unit that one cover links to each other with drying unit; Mainly form by combustion fan (5), hot-blast stove (6); Fuel gas is brought into revolving drum drier (4) by the air burning generation high-temperature flue gas that combustion fan (5) blasts hot-blast stove (6), is used for the required flue gas of revolving drum drier (4) dry catalyst;
One cover drying unit mainly is made up of dispersing device (3), revolving drum drier (4), rotary valve (9), and revolving drum drier (4) connects dispersing device (3), and rotary valve (9) is positioned at revolving drum drier (4) outlet, and this unit is used for catalyst dry;
The tail gas treating unit that one cover links to each other with drying unit; Mainly form by sack cleaner (7), circulating fan (8), rotary valve (10); Sack cleaner (7) reclaims the dust that dry carrier gas is taken out of, and emission abatement tail gas also gets into part tail gas in the revolving drum drier (4) through circulating fan (8) and to carry out the drying cycles use as thermal source.
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| CN2010105844728A CN102564067A (en) | 2010-12-10 | 2010-12-10 | Rotary cylindrical drier catalyst drying method and equipment |
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| CN2010105844728A CN102564067A (en) | 2010-12-10 | 2010-12-10 | Rotary cylindrical drier catalyst drying method and equipment |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103134291A (en) * | 2013-02-02 | 2013-06-05 | 云南中翼鼎东能源科技开发有限公司 | Production line used for drying coal slime |
| CN104180631A (en) * | 2014-08-15 | 2014-12-03 | 沈阳鑫博工业技术发展有限公司 | Fast drying device for coal slime |
| CN105135822A (en) * | 2015-08-06 | 2015-12-09 | 锡林郭勒通力锗业有限责任公司 | Brown coal drying technology and system |
| CN105135855A (en) * | 2015-10-13 | 2015-12-09 | 江苏新业重工股份有限公司 | Drying system |
| CN105444539A (en) * | 2015-12-25 | 2016-03-30 | 安吉中瑞膨润土化工有限公司 | Bentonite raw material drying system |
| CN109405466A (en) * | 2018-11-29 | 2019-03-01 | 北京国电龙源环保工程有限公司 | Drying device and drying means for high-specific surface area denitrating catalyst |
| CN110805897A (en) * | 2019-10-31 | 2020-02-18 | 浙江百特燃烧器有限公司 | Flue gas backward flow formula combustor |
| CN115682638A (en) * | 2022-09-30 | 2023-02-03 | 天华化工机械及自动化研究设计院有限公司 | System for be used for dry FCC catalyst drying process |
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| CN109405466A (en) * | 2018-11-29 | 2019-03-01 | 北京国电龙源环保工程有限公司 | Drying device and drying means for high-specific surface area denitrating catalyst |
| CN110805897A (en) * | 2019-10-31 | 2020-02-18 | 浙江百特燃烧器有限公司 | Flue gas backward flow formula combustor |
| CN115682638A (en) * | 2022-09-30 | 2023-02-03 | 天华化工机械及自动化研究设计院有限公司 | System for be used for dry FCC catalyst drying process |
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Address after: 730060 Gansu city of Lanzhou province Xigu District Heshui Road No. 3 Applicant after: Tianhua Institute of Chemical Machinery & Automation Co., Ltd. Applicant after: National Drying Technology and Equipment Engineering Technology Research Center Applicant after: Ruide Drying Technology Co., Ltd., Lanzhou Address before: 730050 Gansu city of Lanzhou province Xigu District Heshui Road No. 3 Applicant before: Tianhua Chemical Machinery & Automation Research Inst. Applicant before: National Drying Technology and Equipment Engineering Technology Research Center Applicant before: Ruide Drying Technology Co., Ltd., Lanzhou |
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Application publication date: 20120711 |