WO2012022058A1 - Equipement de décomposition de la houille comportant un brûleur unique - Google Patents

Equipement de décomposition de la houille comportant un brûleur unique Download PDF

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Publication number
WO2012022058A1
WO2012022058A1 PCT/CN2010/077016 CN2010077016W WO2012022058A1 WO 2012022058 A1 WO2012022058 A1 WO 2012022058A1 CN 2010077016 W CN2010077016 W CN 2010077016W WO 2012022058 A1 WO2012022058 A1 WO 2012022058A1
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Prior art keywords
coal
rotary kiln
pipe
gas
heat
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PCT/CN2010/077016
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English (en)
Chinese (zh)
Inventor
朱书成
王希彬
黄祥云
曹国超
刘伟
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西峡龙成特种材料有限公司
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Publication of WO2012022058A1 publication Critical patent/WO2012022058A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
    • C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B47/00—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
    • C10B47/28—Other processes
    • C10B47/30—Other processes in rotary ovens or retorts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B47/00—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
    • C10B47/28—Other processes
    • C10B47/32—Other processes in ovens with mechanical conveying means
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B49/00—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated
    • C10B49/02—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K1/00—Purifying combustible gases containing carbon monoxide
    • C10K1/02—Dust removal
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K1/00—Purifying combustible gases containing carbon monoxide
    • C10K1/04—Purifying combustible gases containing carbon monoxide by cooling to condense non-gaseous materials

Definitions

  • the invention belongs to the technical field of comprehensive utilization of coal materials, energy saving and emission reduction, and particularly relates to a decomposition device of coal material single burner.
  • the heating method of the furnace can be divided into external heating type, internal heat type and internal heat external heat mixing type.
  • the heating medium of the external heat furnace is not in direct contact with the raw material, and the heat is introduced from the furnace wall; the heating medium of the internal heat furnace is in direct contact with the raw material, and there are two kinds of solid heat carrier method and gas heat carrier method depending on the heating medium.
  • the internal heat gas heat carrier method is a typical method that has been employed in the industry.
  • the method adopts a gas heat carrier internal heat vertical continuous furnace, that is, a drying section from top to bottom,
  • the decomposition section and the cooling section are three parts.
  • Low temperature decomposition of coal Lignite or a block made of lignite moves from top to bottom and is in direct contact with the combustion gas in direct contact with heat.
  • the hot gas of about 250 ° C upstream to the upstream is cooled to 80 to 100 ° C.
  • the raw materials are decomposed
  • the section is heated to about 500 ° C by a combustion gas containing no oxygen at 600 to 700 ° C to cause thermal decomposition; the hot gas is cooled to about 250 ° C, and the generated semi-coke enters the cooling section and is cooled by the cold gas. After the semi-coke is discharged, it is further cooled with water and air. From The volatiles escaping from the decomposition section are subjected to condensation, cooling and the like to obtain tar and pyrolysis water.
  • Such furnaces have been built in Germany, the United States, the Soviet Union, Czechoslovakia, New Zealand and Japan.
  • the internal heat solid heat carrier method is a typical method for the internal heat of a solid heat carrier.
  • the raw materials are lignite, non-cohesive coal, weakly cohesive coal and oil shale.
  • an intermediate test unit with a capacity of 10 t/h of coal was built in Dorsten, the Federal Republic of Germany.
  • the heat carrier used was solid particles (small ceramic balls, sand or semi-coke). Since the process product gas does not contain exhaust gas, the equipment of the aftertreatment system is small in size, and the gas heat value is high, up to 20.5 to 40.6 MJ/m 3 . This method has a large processing capacity due to large temperature difference, small particle size and extremely fast heat transfer.
  • the LR process process coal low temperature decomposition is to firstly mix the preliminary preheated small piece of raw coal with the hot semi-coke from the separator in the mixer to cause thermal decomposition. Then it falls into the buffer and stays for a certain time to complete the thermal decomposition.
  • the semi-coke coming out of the buffer enters the bottom of the riser and is pumped by hot air. At the same time, the residual carbon in the riser is burned to raise the temperature, and then enters the separator for gas-solid separation.
  • the semi-focus is returned to the mixer and cycled.
  • the volatile matter escaping from the mixer is dedusted, condensed and cooled, and the oil is recovered to obtain a gas having a higher calorific value.
  • a shaft kiln structure which burns flue gas and flammable gas generated by coal, so that the purity of the combustible gas is low, the added value is low, and some are discharged, resulting in A lot of waste of resources and environmental pollution.
  • Another type of shaft kiln is a coal block placed on a perforated partition. There is a heater above the coal block. Because the coal block on the partition has a certain thickness, it cannot be uniformly heated and decomposed, and the decomposed gas is needed.
  • the invention solves the problems existing in the above-mentioned processes and methods, and proposes a coal material single burner decomposition device capable of directly separating coal materials, improving the comprehensive utilization value thereof, energy saving and emission reduction, thereby improving economic and social benefits.
  • a coal material single burner decomposition device comprises a horizontally disposed sealed rotary kiln body, the rotary kiln body comprises a feed port and a discharge port, and a rotary burner is arranged in the rotary kiln body in the direction of the kiln body.
  • the burner comprises a gas inlet pipe, an outer air inlet pipe extending from the rotary kiln, a mixed combustion chamber, an igniter, and a dense heat pipe.
  • the gas inlet pipe and the air intake pipe are arranged in parallel along the axial direction of the rotary kiln body.
  • One side of the mixing combustion chamber communicates with the close-dissipating heat pipe, and the other side is in communication with the gas inlet pipe and the air intake pipe.
  • the igniter is disposed in the mixing combustion chamber, and the burner and the inner wall of the rotary kiln
  • the formed cavity is a coal material propulsion separation channel, and the coal material propulsion separation channel is connected with the feed port and the discharge port, and the gas, coke oil and gas separated by the coal is disposed at the end of the feed port of the rotary kiln body.
  • a collecting pipe, the gas and coke oil collecting pipe separated by the coal is connected with the coal material propelling separation channel, and the other end is connected with a gas dust removing liquefaction mechanism, and the close-dissipating heat pipe and the flame gas sink
  • the headers are connected, and the flame collecting tubes extend outside the rotary kiln.
  • a close-packed heat-absorbing air intake duct and an air distribution chamber are disposed between the air intake pipe and the mixing combustion chamber, and the close-packed heat-absorbing air intake duct communicates with an air distribution chamber, and the air distribution chamber and the air intake duct Connected.
  • a pulverized coal lifting propulsion mechanism is disposed on the inner wall of the rotary kiln.
  • the pulverized coal lifting propulsion mechanism is a plurality of lifting plates disposed on the inner wall of the rotary kiln.
  • a pipe support mechanism is arranged between the close-dissipating heat pipe, the gas inlet pipe, the close-packing heat-absorbing air inlet pipe and the inner wall of the rotary kiln.
  • the inner wall of the rotary kiln is provided with an insulation layer to reduce heat loss in the kiln.
  • the flame gas collecting tube is connected to the pulverized coal drying preheating mechanism at one end of the heat collecting tube.
  • the present invention changes the conventional vertical decomposition kiln form into a horizontal horizontal closed rotary kiln body, the gas intake pipe and the air intake pipe in the burner of the rotary kiln bring air and gas into the mixed combustion chamber, and the igniter ignites the mixed gas.
  • the combusted flame gas continuously enters the dense discharge heat pipe, and a large amount of heat generated is transmitted through the dense heat dissipation pipe wall and radiated to the coal powder in the cavity formed between the burner and the inner wall of the rotary kiln,
  • the coal powder placed on the inner wall of the rotary kiln raises the coal material raised by the propulsion mechanism to be fully absorbed, and the coal material is heated and decomposed, and is decomposed into coal, coke oil and gas with high calorific value in the coal material propulsion separation channel.
  • the coke oil and gas are connected by the coal separation gas, the coke oil and gas collection pipe and the gas dust removal liquefaction mechanism outside the rotary kiln, and the decomposed gas and coke oil and gas are collected, dedusted, separated, pressurized and liquefied.
  • the air intake pipe comprises a close-packed intake air intake duct and an air distribution chamber, and the dense exhaust heat intake duct is arranged to fully absorb the heat in the high-temperature decomposed coal material, and on the other hand, fully utilizes the heat energy generated by the system, The temperature of the decomposed coal material is gradually lowered, and finally it is convenient for storage and utilization.
  • a pipe support mechanism is arranged between the dense exhaust heat pipe, the gas inlet pipe, the air intake pipe and the inner wall of the rotary kiln to further improve the reliability and stability of the combination between the burner and the rotary kiln;
  • the flame gas collecting tube is connected to the pulverized coal drying preheating mechanism at one end of the heat collecting tube, so that a large amount of heat energy remaining in the flame gas after passing through the flame collecting tube is pre-absorbed and heated by the coal material to heat up, thereby improving energy.
  • the utilization rate also greatly increases the temperature of the coal material before entering the rotary kiln body, reduces the water content of the coal material, and rapidly and efficiently decomposes and separates the coal material, fully conserves and utilizes energy, and greatly improves the coal resources.
  • the utilization rate and utilization level will bring a lot of economic and social benefits to the whole society.
  • Figure 1 is a schematic view of the structure of the present invention
  • Figure 2 is a cross-sectional view taken along line A-A of Figure 1.
  • a coal material single burner decomposition equipment including a horizontally arranged sealed rotary kiln body 1
  • the rotary kiln body 1 includes a feed port 2 and a discharge port 3, and a burner is arranged in the rotary kiln body 1 in the direction of the kiln body, the burner is composed of a gas inlet pipe 4 and an air intake pipe 5
  • the mixed combustion chamber 7 , the igniter 8 , and the dense heat dissipation pipe 6 are composed of the gas inlet pipe 4 and the air intake pipe 5 disposed in parallel along the axial direction of the rotary kiln body 1 , and the air intake pipe 5
  • the mixed combustion chamber 7 is connected to the close-dissipating heat pipe 6 on one side, and is connected to the gas inlet pipe 4 and the air intake pipe 5 on the other side
  • the igniter 8 is disposed in the mixing combustion chamber 7
  • Rotary kiln body 1 The gas inlet pipe 4 and the air intake pipe 5 in the inner burner bring the air and the gas into the mixed combustion chamber 7 , the igniter 8 ignites the mixed gas, and the combusted flame gas source continuously enters the dense heat pipe 6 The generated large amount of heat is transmitted through the wall of the dense heat-dissipating tube 6 and radiated to the coal powder in the cavity formed between the burner and the inner wall of the rotary kiln body 1, and is raised by the coal powder disposed on the inner wall of the rotary kiln body 1.
  • Propulsion mechanism 13 The raised coal powder is fully absorbed, and the pulverized coal is heated and decomposed, and is decomposed into gas, coke oil and high calorific value coal in the coal material propulsion separation channel 9, and the gas and coke oil and gas are separated by the coal to separate the gas and coke oil and gas collection pipes. 10 It is connected to the gas dust removal liquefaction mechanism 11 outside the rotary kiln, and collects, dedusts, separates, pressurizes and liquefies the decomposed gas and coke.
  • a close-packed intake air intake duct 15 and an air distribution chamber 14 are disposed between the air intake duct 5 and the mixing combustion chamber 7.
  • the close-packed intake air intake duct 15 is in communication with an air distribution chamber 14 that communicates with the air intake duct 5.
  • Close-packed intake air intake duct 15 The setting is convenient to fully absorb the heat in the high-temperature coal powder, on the one hand, the thermal energy generated by the system is fully utilized, and the temperature of the coal powder is gradually lowered, and finally the storage and utilization are facilitated.
  • a pulverized coal lifting propulsion mechanism 13 is disposed on the inner wall of the rotary kiln body 1, and is disposed in a large amount on the inner wall of the rotary kiln 1 On the one hand, the lifting plate pushes the pulverized coal forward movement, on the other hand, the coal powder is turned over and raised more evenly, and it is cheaper to absorb a large amount of heat.
  • a pipe supporting mechanism is disposed between the close-dissipating heat pipe 6, the gas inlet pipe 4, the air intake pipe 5 and the inner wall of the rotary kiln body 16 Further improve the reliability and stability of the combination between the burner and the rotary kiln.
  • the flame gas collecting pipe 12 is away from the end of the close-packing heat pipe 6 through the pipe 17 and the pulverized coal drying preheating mechanism 18
  • the connection ensures that a large amount of thermal energy in the flame gas after passing through the flame collecting tube 12 is pre-absorbed and dried by the pulverized coal, thereby improving the utilization rate of the energy, and also greatly increasing the temperature of the pulverized coal before entering the rotary kiln body 1. .
  • An insulating layer is disposed on the inner wall of the rotary kiln body 1.
  • a coal material single burner decomposition equipment including a horizontally arranged sealed rotary kiln body 1
  • the rotary kiln body 1 includes a feed port 2 and a discharge port 3, and a burner is arranged in the rotary kiln body 1 in the direction of the kiln body, the burner is composed of a gas inlet pipe 4 and an air intake pipe 5
  • the mixed combustion chamber 7 , the igniter 8 , and the dense heat dissipation pipe 6 are composed of the gas inlet pipe 4 and the air intake pipe 5 disposed in parallel along the axial direction of the rotary kiln body 1 , and the air intake pipe 5
  • the mixed combustion chamber 7 is connected to the close-dissipating heat pipe 6 on one side, and is connected to the gas inlet pipe 4 and the air intake pipe 5 on the other side
  • the igniter 8 is disposed in the mixing combustion chamber 7
  • Rotary kiln body 1 The gas inlet pipe 4 and the air intake pipe 5 in the inner burner bring the air and the gas into the mixed combustion chamber 7 , the igniter 8 ignites the mixed gas, and the combusted flame gas source continuously enters the dense heat pipe 6 The generated large amount of heat is transmitted through the wall of the dense heat-dissipating tube 6 and radiated to the coal powder in the cavity formed between the burner and the inner wall of the rotary kiln body 1, and is raised by the coal powder disposed on the inner wall of the rotary kiln body 1.
  • Propulsion mechanism 13 The raised coal powder is fully absorbed, and the pulverized coal is heated and decomposed, and is decomposed into gas, coke oil and high calorific value coal in the coal material propulsion separation channel 9, and the gas and coke oil and gas are separated by the coal to separate the gas and coke oil and gas collection pipes. 10 It is connected to the gas dust removal liquefaction mechanism 11 outside the rotary kiln, and collects, dedusts, separates, pressurizes and liquefies the decomposed gas and coke.
  • a close-packed intake air intake duct 15 and an air distribution chamber 14 are disposed between the air intake duct 5 and the mixing combustion chamber 7.
  • the close-packed intake air intake duct 15 is in communication with an air distribution chamber 14 that communicates with the air intake duct 5.
  • Close-packed intake air intake duct 15 The setting is convenient to fully absorb the heat in the high-temperature coal powder, on the one hand, the thermal energy generated by the system is fully utilized, and the temperature of the coal powder is gradually lowered, and finally the storage and utilization are facilitated.
  • a pulverized coal lifting propulsion mechanism 13 is disposed on the inner wall of the rotary kiln body 1, and is disposed in a large amount on the inner wall of the rotary kiln 1 On the one hand, the lifting plate pushes the pulverized coal forward movement, on the other hand, the coal powder is turned over and raised more evenly, and it is cheaper to absorb a large amount of heat.
  • a pipe supporting mechanism is disposed between the close-dissipating heat pipe 6, the gas inlet pipe 4, the air intake pipe 5 and the inner wall of the rotary kiln body 16 Further improve the reliability and stability of the combination between the burner and the rotary kiln.
  • the flame gas collecting pipe 12 is away from the end of the close-packing heat pipe 6 through the pipe 17 and the pulverized coal drying preheating mechanism 18
  • the connection ensures that a large amount of thermal energy in the flame gas after passing through the flame collecting tube 12 is pre-absorbed and dried by the pulverized coal, thereby improving the utilization rate of the energy, and also greatly increasing the temperature of the pulverized coal before entering the rotary kiln body 1. .
  • An insulating layer is disposed on the inner wall of the rotary kiln body 1.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)

Abstract

Cette invention concerne un équipement de décomposition de la houille comportant un brûleur unique. Cet équipement de décomposition utilise, comme matière première, la poudre de houille restant après récupération du charbon en gros morceaux par les entreprises d'exploitation charbonnière. Une fois introduite dans l'équipement de décomposition par un orifice d'admission, la poudre de houille absorbe, de façon significative, la chaleur créée dans l'équipement de décomposition et se décompose régulièrement, donnant un gaz relativement purifié, du goudron de houille et une houille à pouvoir calorifique supérieur. Le gaz relativement purifié et le gaz de goudron pénètrent dans un dispositif de collecte pour être dépoussiérés, séparés et liquéfiés par mise sous pression, avant d'être stockés. La houille à pouvoir calorifique supérieur sort par un orifice d'évacuation, puis est stockée. Ledit équipement de décomposition permet une décomposition et une séparation rapides et efficaces de la houille, et permet également de réaliser des économies en utilisant l'intégralité de l'énergie, ainsi que d'améliorer considérablement le taux et le niveau d'utilisation des ressources houillères.
PCT/CN2010/077016 2010-08-16 2010-09-16 Equipement de décomposition de la houille comportant un brûleur unique WO2012022058A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201010262573.3 2010-08-16
CN 201010262573 CN101985557B (zh) 2010-08-19 2010-08-19 煤物质单燃烧器分解设备

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WO2012022058A1 true WO2012022058A1 (fr) 2012-02-23

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CN110358553A (zh) * 2019-08-21 2019-10-22 海南大学 一种回转式快速燃气红外辐射炭化炉

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CN105199762A (zh) * 2014-06-25 2015-12-30 中国石油大学(华东) 回转窑煤热解制焦油、半焦、煤气的系统
CN104121771B (zh) * 2014-07-30 2016-01-20 梁均全 一种水泥制备回转窑
CN104845647A (zh) * 2015-05-05 2015-08-19 郭秀梅 低阶煤提质热解设备
CN112920823A (zh) * 2019-12-06 2021-06-08 国家能源投资集团有限责任公司 回转窑式热解反应器
CN114806617B (zh) * 2022-05-16 2024-06-21 唐山市新雅诺生物科技有限公司 一种常压无氧炭化热解炉及植物有机质炭化处理方法

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Publication number Priority date Publication date Assignee Title
CN108423680A (zh) * 2018-06-13 2018-08-21 浙江瑞能炭材料科技有限公司 一种自供热式两段化学活化炉
CN108423680B (zh) * 2018-06-13 2024-02-02 浙江瑞能炭材料科技有限公司 一种自供热式两段化学活化炉
CN110358553A (zh) * 2019-08-21 2019-10-22 海南大学 一种回转式快速燃气红外辐射炭化炉
CN110358553B (zh) * 2019-08-21 2024-05-17 海南大学 一种回转式快速燃气红外辐射炭化炉

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