WO2014173054A1 - Système et procédé de distillation sèche et d'extinction pour poudre de lignite - Google Patents

Système et procédé de distillation sèche et d'extinction pour poudre de lignite Download PDF

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Publication number
WO2014173054A1
WO2014173054A1 PCT/CN2013/082367 CN2013082367W WO2014173054A1 WO 2014173054 A1 WO2014173054 A1 WO 2014173054A1 CN 2013082367 W CN2013082367 W CN 2013082367W WO 2014173054 A1 WO2014173054 A1 WO 2014173054A1
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WO
WIPO (PCT)
Prior art keywords
coke
lignite
dry distillation
powder
coke powder
Prior art date
Application number
PCT/CN2013/082367
Other languages
English (en)
Chinese (zh)
Inventor
董书通
雷辰
唐葆仁
董铖昊
Original Assignee
郑州永通特钢有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 郑州永通特钢有限公司 filed Critical 郑州永通特钢有限公司
Publication of WO2014173054A1 publication Critical patent/WO2014173054A1/fr

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Classifications

    • 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
    • C10B3/00—Coke ovens with vertical chambers
    • C10B3/02—Coke ovens with vertical chambers with heat-exchange devices
    • 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
    • C10B39/00—Cooling or quenching coke
    • C10B39/02—Dry cooling outside the oven
    • 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
    • C10B47/02—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion with stationary charge
    • C10B47/04—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion with stationary charge in shaft furnaces

Definitions

  • the present invention relates to a dry distillation and quenching system and process for lignite coal powder. Background technique
  • the technology and technology of the large-scale coke oven equipment currently used for the production of coke products have matured.
  • the dry distillation of coal is carried out by the external heating method of carbonization chamber and combustion chamber separation, and the coal powder is used as raw material.
  • the coke oven mainly produces coke coal such as coking coal and fat coal with strong cohesiveness as raw materials to produce block coke.
  • the powdered raw coal is loaded into the carbonization chamber from the top.
  • the gas and flue gas passages the gas and tar which are decomposed by the dry distillation can be taken out of the coke oven for use, or it can be fully burned in the combustion chamber and the flue of the coke oven to generate electricity by using the thermal energy. Pulverized coal by high temperature retorting
  • a whole piece of coke is formed in the carbonization chamber.
  • the furnace door on both sides of the carbonization chamber is the same width and height as the carbonization chamber.
  • the furnace doors are opened on both sides, and the coke block is pushed out from the coke oven.
  • the coke block falls into the quenching car or the coke tank, and then the water is drenched. Or quenching or cooling the dry quenching tank using inert gas as the medium.
  • the above process for producing coke can only be batch-type, with an interval of more than 12-20 hours.
  • the present invention has been accomplished in view of at least one of the above problems, and an object of the present invention is to provide a dry distillation and quenching system for lignite pulverized coal, including a lignite dry distillation furnace and an intercooled quenching tower of an externally heated top coal
  • the dry distillation furnace comprises a phase-to-phase retorting chamber and a combustion chamber
  • the top of the retorting chamber is provided with a coal inlet and a coal feeder
  • the bottom is sloped, the inclination angle of the slope is greater than the accumulation angle of the coke powder
  • the bottom end is provided with a coke outlet and a quantitative defocusing mechanism
  • the quenching tower comprises a tower body, a plurality of vertically disposed coke powder cooling pipes and a screw discharge machine, wherein the coke powder cooling pipe is disposed in the tower body Medium, and the tower body further contains cooling water, the spiral discharge machine is disposed at a lower portion of the tower body; wherein the coke powder from
  • the dry distillation and quenching system of the invention adopts lignite coal powder as raw material, has large production capacity, and the product can be selected to produce gas and tar in addition to the coke powder, or is selected to be fully combusted in the dry distillation furnace combustion chamber and the flue. Thermal power generation.
  • the use of the intercooled quenching tower to cool the coke powder can recover the heat of the sensible heat of the high-temperature coke powder, for example, can be used for power generation.
  • the system continuously adds lignite to the retorting chamber via a stoker.
  • the slope is inclined to both sides or one side of the retorting chamber, and the coke opening is the same width as the retorting chamber.
  • the system further includes a coke drum with a coke drum and a hoist for transporting the coke powder from the coke outlet to the underside of the hoist through the coke drum,
  • the hoist lifts and traverses the coke drum filled with high-temperature coke powder to the top of the quenching tower, and puts the coke powder into coke-cold But in the tube.
  • the dry distillation furnace is provided with a plurality of gas and flue gas passages, and the retorting furnace body is constructed of refractory bricks.
  • the coke frying coke is controlled by a quantitative out-of-focus mechanism.
  • a guide groove is provided at the exit opening for introducing high temperature coke from the exit port into the coke drum, and a closed shield is disposed above the guide groove.
  • the lignite is continuously added to the dry distillation chamber through the coal feeder;
  • Lignite generates loose high temperature coke powder in the dry distillation furnace
  • the coke powder flows along the bottom of the retorting chamber and is loaded into the coke car by a quantitative defocusing mechanism; the coke powder is transported to the top of the quenching tower, and is loaded into the coke powder cooling pipe, cooling water Cooling the coke powder in the coke powder cooling pipe;
  • the cooled coke powder is discharged from the quenching tower through a screw discharger.
  • the system and the process of the invention have one or more of the following advantages: high temperature coke powder cooling safety; use lignite coal powder as raw material, improve the utilization rate of lignite, save mineral resources, protect Environment;
  • the product can also choose to produce gas and tar, or choose to use it to generate electricity in the dry distillation furnace combustion chamber and flue gas after fully burning; use the intercooled quenching tower to cool the coke powder, can recover high temperature The sensible heat of coke powder, for example for power generation.
  • FIG. 1 is a schematic view showing the structure of a dry distillation and quenching system of lignite pulverized coal according to a preferred embodiment of the present invention.
  • Figure 2 is a cross-sectional view of the system of Figure 1 taken along the A-A direction.
  • FIG. 3 is a cross-sectional view of a quenching tower of a dry distillation and quenching system of lignite pulverized coal according to a preferred embodiment of the present invention. Figure.
  • Figure 4 is a plan view of the quenching tower of Figure 3.
  • a dry distillation and quenching system of lignite pulverized coal which comprises an external thermal top coal charging lignite dry distillation furnace and an intercooled quenching tower.
  • the dry distillation furnace comprises a plurality of intersecting retorting chambers 1 and a combustion chamber 2, and a top of the retorting chamber 1 is provided with a coal feeding port 5 and a coal feeder 6.
  • the bottom portion 7 of the retorting chamber is sloped, and the inclination angle of the slope 7 is larger than the accumulation angle of the coke powder.
  • the angle of inclination is, for example, greater than 30 degrees.
  • a coke opening 8 and a quantitative defocusing mechanism 9 are provided at the bottom end of the slope.
  • the quenching tower includes a tower body, a plurality of vertically disposed coke powder cooling tubes, and a screw discharger 22 (shown in Figure 1).
  • the quenching tower may further include a top cover 31 and a top cover opening and closing device 21.
  • a hot focus inlet is provided on the top cover 31.
  • the coke powder cooling pipe is disposed in the tower body, and the tower body further contains cooling water, and the screw discharger 22 is disposed at a lower portion of the tower body.
  • the quenching tower is provided with one or more water outlets 32 and one or more water inlets 34, and the bottom of the quenching tower is provided with a cold focus outlet 33.
  • the cooling water in the quenching tower can be provided, for example, by a water circulation system.
  • the quenching tower can be placed at a certain height from the ground by means of four brackets.
  • the high temperature coke from the coke outlet 8 of the lignite dry distillation furnace is sent to the coke cooling tube.
  • the coke powder is discharged through the auger 22 to the quenching tower.
  • the slope may be inclined to both sides or one side of the retorting chamber 1, and the coke opening 8 is the same width as the retorting chamber 1.
  • the system may also include a coke trolley 16 with a coke drum 15 and a hoist 19.
  • the coke drum 16 is used to transport the coke powder from the coke outlet 8 below the hoisting machine 19 through the coke drum 15, which lifts and traverses the coke drum 15 filled with high-temperature coke powder to the extinguishing
  • the coke powder is placed in the coke cooling tube.
  • the dry distillation furnace is provided with a plurality of gas and flue gas passages 3, and the dry distillation furnace body 4 is constructed of refractory bricks.
  • the coke opening 8 is provided with a guiding groove 14 for introducing the high-temperature coke powder flowing out of the coke opening 8 into the coke drum 15, and the closing groove 17 is disposed above the guiding groove 14.
  • the present invention also provides a process for producing coke breeze using the above system, which may include the following steps: lignite generates loose high-temperature coke powder in the dry distillation furnace; coke powder along the bottom slope of the retorting chamber 7 and / Or the guiding groove 14 flows, and is loaded into the coke car by the quantitative defocusing mechanism; the coke powder is transported to the top of the quenching tower, and is loaded into the coke powder cooling pipe, the cooling water pair The coke powder in the coke powder cooling tube is subjected to a cooling process; the cooled coke powder is discharged from the quenching tower through a screw discharger 22.
  • each side of the retorting chamber is provided with a coke opening 8 next to the bottom end of the slope.
  • the quantitative out-of-focus mechanism 9 can control the amount of defocus in a quantitative manner.
  • the loading of the coal loading vehicle along the rail at the top of the furnace may be performed to complete the operation of adding coal to the retorting chamber 1 through the coal charging port 5.
  • the lower end of the coke opening 8 on both sides of the retorting chamber is disposed, and a guiding groove 14 is provided to introduce the high-temperature coke powder flowing out of the coke outlet into the coke drum 15.
  • the coke drum is placed on the coke drum 16 and parked below the coke opening 8 on both sides of the retorting chamber to be cokeed.
  • a closed protective cover 17 is provided above the guiding groove 14, to prevent dust from being generated during the coke and to protect the operator in front of the furnace.
  • the coke drums 16 on both sides are pulled by the electric motor vehicle 18 and run along the sides of the retorting furnace in the direction parallel to the retorting furnace.
  • the coke drum 16 and the coke drum 15 containing the high temperature coke powder are drawn under the hoist 19.
  • the hoist lifts the coke tank filled with high-temperature coke powder and traverses to the top of the 20-cold quenching tower.
  • the high temperature coke powder is charged into the intercooled quenching tower, and cooled by water cooling.
  • the cooled coke breeze is discharged by a screw feeder 22 below the quenching tower.
  • Lignite pulverized coal can be used as a raw material, which expands the utilization range of lignite, and utilizes lignite pulverized coal or a crushed medium which cannot be utilized in the prior art, thereby reducing the cost of raw materials;
  • the digital retorting chamber and the combustion chamber are combined into a porous retorting furnace to carry out the pyrolysis pyrolysis production of lignite on a large scale and efficiently;
  • the dry distillation furnace type and the dry distillation product can be selected according to the composition and output demand of lignite.
  • Gas and tar can be obtained in addition to the coke powder, or it can be fully burned in the combustion chamber and flue of the coke oven to generate electricity by using the thermal energy. ;
  • the dry distillation and quenching system and process of the lignite coal powder of the present invention increase the utilization rate of lignite, save energy and protect the environment.
  • the invention is not limited to the specific embodiments described above. It is to be understood that various modifications and changes may be made without departing from the spirit and scope of the invention.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Coke Industry (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

La présente invention concerne un système de distillation sèche et d'extinction destiné à une poudre de lignite, ledit système comprenant un four de distillation sèche de lignite de type chauffage externe et chargement en charbon par sa partie supérieure, et une tour d'extinction de type refroidissement indirect, le four de distillation sèche comprenant une pluralité de chambres de distillation sèche alternant avec des chambres de combustion, les parties supérieures des chambres de distillation sèche étant pourvues de chargeurs de grilles, et leurs parties inférieures étant en forme de pente, les angles d'inclinaison des pentes étant supérieurs à l'angle de repos de la poudre de coke, et des sorties pour le coke et des mécanismes de décharge quantitative de coke étant disposés au niveau des extrémités inférieures des pentes ; et la poudre de coke, provenant des sorties pour le coke du four de distillation sèche de lignite, est transportée vers une conduite de refroidissement de poudre de coke, la poudre de coke présente dans la conduite de refroidissement de poudre de coke étant refroidie par de l'eau de refroidissement et ensuite la poudre de coke refroidie est déchargée de la tour d'extinction par le biais d'une machine de décharge en spirale. La poudre de lignite est utilisée comme matière première, la capacité de production est grande, et si on le souhaite, du gaz de houille et du goudron peuvent être produits conjointement avec la poudre de coke, ou la poudre de lignite peut être totalement brûlée dans les chambres de combustion et mise en circulation à partir du four de distillation sèche après quoi son énergie thermique est utilisée pour générer de l'énergie.
PCT/CN2013/082367 2013-04-26 2013-08-27 Système et procédé de distillation sèche et d'extinction pour poudre de lignite WO2014173054A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310150712.7A CN103194247B (zh) 2013-04-26 2013-04-26 褐煤煤粉的干馏及熄焦系统和工艺
CN201310150712.7 2013-04-26

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WO2014173054A1 true WO2014173054A1 (fr) 2014-10-30

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103194247B (zh) * 2013-04-26 2014-01-29 郑州永通特钢有限公司 褐煤煤粉的干馏及熄焦系统和工艺
CN108384560B (zh) * 2018-03-09 2020-10-02 同济大学 大型生物质及废物热解炉
CN108531199B (zh) * 2018-03-27 2020-09-11 五冶集团上海有限公司 一种焦罐直筒根部与焦罐下锥体排焦口的衬板结构
CN112480940A (zh) * 2020-11-30 2021-03-12 新疆元瑞圣湖能源有限公司 自动调节冷介循环速度的半焦间接换热熄焦装置及方法
CN113956895A (zh) * 2021-10-08 2022-01-21 葛霖 一种煤干馏焦炉及其工艺

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2056158U (zh) * 1989-06-15 1990-04-18 山西省煤炭加工转化技术开发中心 煤低温干馏半焦炉
CN101709221A (zh) * 2009-11-16 2010-05-19 中冶焦耐(大连)工程技术有限公司 一种新型焦粉冷却装置
CN102417823A (zh) * 2011-10-21 2012-04-18 山东天力干燥股份有限公司 一种低阶煤的干燥干馏的组合提质工艺及系统
WO2012137192A1 (fr) * 2011-04-07 2012-10-11 Pt. Total Sinergy International Dispositif pour valoriser des matières organiques, et produit obtenu
CN103194247A (zh) * 2013-04-26 2013-07-10 郑州永通特钢有限公司 褐煤煤粉的干馏及熄焦系统和工艺

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2056158U (zh) * 1989-06-15 1990-04-18 山西省煤炭加工转化技术开发中心 煤低温干馏半焦炉
CN101709221A (zh) * 2009-11-16 2010-05-19 中冶焦耐(大连)工程技术有限公司 一种新型焦粉冷却装置
WO2012137192A1 (fr) * 2011-04-07 2012-10-11 Pt. Total Sinergy International Dispositif pour valoriser des matières organiques, et produit obtenu
CN102417823A (zh) * 2011-10-21 2012-04-18 山东天力干燥股份有限公司 一种低阶煤的干燥干馏的组合提质工艺及系统
CN103194247A (zh) * 2013-04-26 2013-07-10 郑州永通特钢有限公司 褐煤煤粉的干馏及熄焦系统和工艺

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CN103194247A (zh) 2013-07-10
CN103194247B (zh) 2014-01-29

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