WO2009072999A1 - Installation et procédé de refroidissement à sec du coke - Google Patents

Installation et procédé de refroidissement à sec du coke Download PDF

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Publication number
WO2009072999A1
WO2009072999A1 PCT/UA2008/000072 UA2008000072W WO2009072999A1 WO 2009072999 A1 WO2009072999 A1 WO 2009072999A1 UA 2008000072 W UA2008000072 W UA 2008000072W WO 2009072999 A1 WO2009072999 A1 WO 2009072999A1
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WO
WIPO (PCT)
Prior art keywords
coke
cooling agent
quenching
circulation system
dry
Prior art date
Application number
PCT/UA2008/000072
Other languages
English (en)
Russian (ru)
Inventor
Yevheniy Alekseevich Danilin
Original Assignee
Yevheniy Alekseevich Danilin
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 Yevheniy Alekseevich Danilin filed Critical Yevheniy Alekseevich Danilin
Publication of WO2009072999A1 publication Critical patent/WO2009072999A1/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
    • C10B39/00—Cooling or quenching coke
    • C10B39/02—Dry cooling outside the oven

Definitions

  • This group of inventions relates to the coke industry and can be used in dry quenching systems of coke (hereinafter CTK).
  • Dry coke quenching methods and installations for their implementation are based on cooling coke in a coke quenching chamber with a cooling agent that circulates in the cooling agent circulation system (see, M. Teplitsky et al. Dry coke quenching, M., “Metallurgy”, 1971, p. 52-59).
  • the coke quenching chamber is a vertically located shaft lined with refractory masonry, into which coke is supplied by means of metered loading.
  • Coke quenching in a coke quenching chamber is carried out by passing a cooling agent through the coke layer, which is inert with respect to coke.
  • the cooling agent circulation system typically contains a coarse filter, usually made in the form of a dust collecting bin, a recovery boiler, which is a relatively tight chamber in which heat-exchanging surfaces are placed to which the cooling agent gives off heat, and means for removing the excess volume of the cooling agent from the circulation system of the cooling agent.
  • a fine filter of the cooling agent made in the form of a cyclone, is installed, followed by a blower device, for example, a smoke exhauster.
  • a blower device for example, a smoke exhauster.
  • part of the cooling agent circulation system is constantly under significant vacuum, which leads to air suction into the system coolant circulation.
  • a candle enters the circulation system of the cooling agent as a means for removing the excess volume of the cooling agent that is formed in the circulation system of the cooling agent as a result of air suction.
  • the CCPF operates in a specific aerodynamic mode, namely, in the upper part of the coke quenching chamber, a pressure close to atmospheric pressure (the so-called aerodynamic zero) is maintained, which prevents the release of a cooling agent during coke loading into the coke quenching chamber, and also prevents into the cooling agent of air, the presence of which in the cooling agent leads to the burning of coke.
  • the aerodynamic zero in the upper part of the coke quenching chamber is maintained by dumping the excess volume of the cooling agent into the atmosphere through the candle of the cooling agent circulation system.
  • the candle of the cooling agent circulation system is installed after the draft device.
  • the pressure value exceeds atmospheric by 200-300 kgf / m 2 , due to the high resistance of coke during the passage of the cooling agent through the coke, which leads to emissions of the cooling agent from the coke quenching chamber at the time of coke unloading a vehicle, such as a conveyor.
  • a means for continuously discharging coke is installed, which usually consists of a dispenser and an intermediate hopper.
  • the determination of the amount of air suction in the circulation system of the cooling agent is carried out in the process of operation of the CCP. So, during the operation of the CCP, the pressure sensor, which is located in the upper part of the CCP, constantly monitors the pressure value in the upper part of the coke quenching chamber. With increasing pressure in the upper part of the coke quenching chamber, excess coolant is discharged from the cooling agent circulation system through a candle into the atmosphere. During the discharge of excess coolant through a candle into the atmosphere, the amount of coolant is measured using known means, for example, flow meters. Then determine what excess volume of the cooling agent was discharged into the atmosphere per unit time (hour).
  • the obtained value is divided by the value of the amount of cooling agent that was extinguished by coke quenching in the coke quenching chamber for the same period of time (hour), after which the air suction coefficient is obtained.
  • the effectiveness of the USTK is judged.
  • the coefficient of air suction in the USTK should be no more than 15%. When the coefficient of air suction is equal to 15% or more, the unit is stopped for major repairs.
  • a dry coke quenching unit contains: a) a coke quenching chamber, b) a cooling agent circulation system including a recovery boiler and means for removing an excess volume of a cooling agent from a cooling agent circulation system, c) means for discharging coke from a coke quenching chamber.
  • the dry coke quenching method includes: a) dosed loading of coke into the coke quenching chamber, b) cooling of coke in the coke quenching chamber with a cooling agent that circulates in the cooling agent circulation system, c) supply of coke from the coke quenching chamber to the coke unloading facility, d ) unloading coke from the means for unloading coke on a vehicle.
  • the disadvantage of the STCC and the method implemented therein is that the aerodynamic zero is maintained in the upper part of the coke quenching chamber by dumping an excess volume of the cooling agent into the atmosphere through a candle, which leads to environmental pollution.
  • the cooling agent contains about 6% carbon monoxide, whose calorific value is 3270 kcal / m 3 .
  • the chemical heat that is contained in the cooling agent is not used.
  • the removal of the cooling agent to the atmosphere leads to inefficient utilization of the heat contained in the cooling agent and environmental pollution.
  • a dry coke quenching unit contains: a) a coke quenching chamber, b) a cooling agent circulation system, including a recovery boiler and means for removing an excess volume of a cooling agent from a cooling agent circulation system, c) means for discharging coke from a coke quenching chamber.
  • the means for draining the excess volume of the cooling agent is made in the form of a candle for discharging the cooling agent from the cooling agent circulation system.
  • the dry coke quenching method includes: a) dosed coke loading into the coke quenching chamber, b) coke cooling in the coke quenching chamber with a cooling agent that circulates in the cooling agent circulation system, c) supply of coke from the coke quenching chamber to the coke unloading facility, d) unloading coke from the means for continuous unloading of coke on a vehicle.
  • the disadvantage of the CCCT and the method implemented therein is that, when the excess volume of the cooling agent is removed to the atmosphere through a candle, the known CCCT does not use the chemical heat contained in the cooling agent, and the environment is polluted, since the cooling agent contains about 6% carbon monoxide.
  • the main objective of this group of inventions is to develop a dry coke quenching unit and a dry coke quenching method that can increase the efficiency of heat recovery contained in coke and reduce environmental pollution by carbon monoxide.
  • the task of the group of inventions is achieved through the use of chemical heat contained in the cooling agent, which is removed from the cooling agent circulation system to an additional recovery boiler, in which the cooling agent is subjected to heat treatment with subsequent utilization of the heat of the exhaust gases resulting from the heat treatment of the aforementioned cooling agent in an additional recovery boiler.
  • the problem is achieved in that in a known installation for dry quenching of coke, comprising: a) a coke quenching chamber, b) a cooling agent circulation system including a recovery boiler and means for removing an excess volume of the cooling agent from the cooling agent circulation system, c) means for discharge of coke from the coke quenching chamber, according to the claimed invention, d) the dry coke quenching unit contains an additional recovery boiler, which is connected to the cooling agent circulation system.
  • an additional recovery boiler provides an increase in the efficiency of utilization of the heat contained in the coke due to the use of chemical heat contained in the cooling agent, which is removed through the means for removing the excess volume of the cooling agent from the circulation system of the cooling agent to the additional recovery boiler in which the cooling the agent is heat treated.
  • the additional waste heat boiler comprises a heat exchanger and a reactor containing at least one burner device and also equipped with a smoke exhauster.
  • the stated objective is achieved in that in the known method, comprising: a) dosed coke loading into the coke quenching chamber, b) coke cooling in the quenching quenching chamber with a cooling agent that circulates in the cooling agent circulation system, c) supply coke from the coke quenching chamber to the coke unloading means, d) unloading coke from the coke unloading means to the vehicle according to the claimed invention, e) the excess volume of the cooling agent is removed from the system we circulate the cooling agent into an additional recovery boiler, in which the cooling agent is subjected to heat treatment with the subsequent utilization of the heat of the exhaust gases. Thermal treatment of the cooling agent with the subsequent utilization of the heat of the exhaust gases provides an increase in the utilization of the heat contained in the coke due to the use of chemical heat contained in the excess volume of the cooling agent.
  • the cooling agent is enriched with fuel and / or air in an additional waste heat boiler.
  • the enrichment of the cooling agent with fuel and / or air ensures the effective disinfection of the cooling agent in the additional recovery boiler, and also ensures the efficient use of chemical heat that is released during the combustion of carbon monoxide contained in the cooling agent.
  • the heat treatment of the cooling agent in an additional heat recovery boiler is carried out at a temperature of 700-1100 0 C.
  • the heat treatment of the cooling agent at a temperature of 700-1100 0 C provides for the efficient utilization of chemical heat contained in the cooling agent, and also leads to reducing carbon monoxide (CO) in the exhaust gases.
  • the cooling agent is dedusted before being fed to an additional recovery boiler. This allows you to catch coke dust, the combustion of which requires a temperature above 2000 0 C, and allows you to increase the reliability of the additional recovery boiler.
  • Installation of dry quenching of coke contains a coke quenching chamber 1, a circulation system 2 of a cooling agent, including a waste heat boiler 3 and adjacent to the coke quenching chamber 1, as well as means for unloading coke 4 from the coke quenching chamber 1.
  • the dry coke quenching unit contains an additional recovery boiler 5, which is connected to the cooling agent circulation system 2.
  • An additional waste heat boiler 5 is equipped with a smoke exhaust 6i. Moreover, the waste heat boiler 5 comprises a heat exchanger 7 and a reactor 8 containing at least one burner device 9.
  • the reactor 8 of the additional recovery boiler 5 is connected to the cooling agent circulation system 2 by a pipe 10, which serves as a means for draining the excess volume of the cooling agent from the cooling agent circulation system 2.
  • the pipeline 10 is equipped with a regulator 11 for supplying a cooling agent from the circulation system 2 of the cooling agent to the reactor 8 of the additional recovery boiler 5.
  • a pressure sensor is installed in the upper part of the coke quenching chamber 1
  • the additional recovery boiler 5 is equipped with a gas duct 14 installed after the smoke exhauster 6i to remove exhaust gases from the additional recovery boiler 5.
  • the dry coke quenching unit is equipped with a dust cleaner 15.
  • the circulation system 2 of the cooling agent is equipped with a smoke exhaust 6 2 .
  • the operation of the inventive installation of dry quenching of coke Is as follows. Coke obtained by coking in coke ovens using loaders (not shown) is loaded into the coke quenching chamber 1. In the coke quenching chamber 1, dry quenching of coke is carried out by passing a cooling agent through the coke layer. The cooling agent is circulated in the coke quenching chamber 1 using the cooling agent circulation system 2, which is equipped with a waste heat boiler 3 and a smoke exhauster Q 2 . Coke, due to the action of gravity, from the quenching chamber of coke 1 enters the means for unloading coke 4, from which coke is discharged onto the vehicle 13.
  • the excess volume of the cooling agent from the circulation system 2 of the cooling agent is supplied via line 10 to the reactor 8 of the additional recovery boiler 5.
  • the regulation of the excess volume of the cooling agent supplied to the reactor 8 from the circulation system 2 of the cooling agent is carried out by the cooling agent supply regulator 11, in in accordance with the pressure in the upper part of the coke quenching chamber 1 recorded by the pressure sensor 12.
  • the cooling agent circulation system 2 When an excess volume of the cooling agent is supplied from the cooling agent circulation system 2 to the reactor 8, the cooling agent is dedusted by means of a dust cleaner 15. Fuel and air are supplied to the burner device 8 of the additional recovery boiler 5 to enrich the cooling agent.
  • the cooling agent is heat treated, resulting in the formation of exhaust gases that give off heat to the heat exchanger 7 of the additional heat recovery boiler 5, after which the exhaust gases are removed from the additional heat recovery boiler 5 using the exhaust fan 6i to the atmosphere through the flue 14 .
  • the following was carried out: a) metered loading of coke into the quenching chamber of coke 1 as coke ovens were unloaded (not shown), in which coke was obtained by coking, b) cooling of coke in the quenching quenching chamber 1 by a cooling agent, why 74000 m 3 / h of cooling agent was supplied through the cooling agent circulation system 2 to the coke quenching chamber 1, c) as the coke with a temperature of 250 ° C arrived from the coke quenching chamber 1 to the coke unloading facility 4, an excess volume was removed cooling agent in the amount of 4300 m 3 / h with a temperature of 170 0 C from the circulation circuit 2 of the cooling agent to the reactor 8 of the additional recovery boiler 5, d) during the removal of the excess volume of the cooling agent in the amount of 4300 m 3 / h to the reactor 8 of the additional boiler - utilizer 5, fuel, for example, coke oven gas, and air were supplied to
  • the use of the claimed group of inventions increases the efficiency of the CCCT due to the use of chemical heat in the combustion of carbon monoxide (CO) contained in the cooling agent, which improves the efficiency of utilization of the heat contained in the coke and reduces environmental pollution Wednesday.
  • CO carbon monoxide

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Coke Industry (AREA)

Abstract

La présente invention peut être utilisée dans des installations de refroidissement à sec du coke. Cette installation de refroidissement à sec du coke comprend une chambre de refroidissement du coke (1), un système de circulation de l'agent de refroidissement (2) comprenant une chaudière de récupération de chaleur (3) et un dispositif pour retirer le volume excédentaire de l'agent de refroidissement du système de circulation correspondant (2) et un dispositif (4) pour décharger le coke de la chambre de refroidissement (1). La chaudière de récupération de chaleur additionnelle (5) est raccordée au système de circulation de l'agent de refroidissement (2). Ceci permet d'accroître le rendement de récupération de chaleur du coke et de réduire la pollution de l'environnement par l'oxyde de carbone.
PCT/UA2008/000072 2007-12-07 2008-12-04 Installation et procédé de refroidissement à sec du coke WO2009072999A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
UAA200713705A UA83981C2 (ru) 2007-12-07 2007-12-07 Установка и способ сухого гашения кокса
UAA200713705 2007-12-07

Publications (1)

Publication Number Publication Date
WO2009072999A1 true WO2009072999A1 (fr) 2009-06-11

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Application Number Title Priority Date Filing Date
PCT/UA2008/000072 WO2009072999A1 (fr) 2007-12-07 2008-12-04 Installation et procédé de refroidissement à sec du coke

Country Status (3)

Country Link
RU (1) RU2008128019A (fr)
UA (1) UA83981C2 (fr)
WO (1) WO2009072999A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2489472C2 (ru) * 2011-03-25 2013-08-10 Евгений Алексеевич Данилин Способ сухого тушения кокса

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4141795A (en) * 1976-07-06 1979-02-27 Nippon Kokan Kabushiki Kaisha Dry type method for quenching coke
SU1600329A1 (ru) * 1985-12-23 1992-02-07 Производственно-Техническое Предприятие Треста "Укрэнергочермет" Установка сухого тушени кокса
RU1778132C (ru) * 1990-05-24 1992-11-30 Кузнецкий Филиал Восточного Научно-Исследовательского Углехимического Института Способ эвакуации избыточного газа из установки сухого тушени кокса
JPH10158656A (ja) * 1996-12-04 1998-06-16 Nippon Steel Corp コークス乾式消火設備
UA14855U (en) * 2006-03-07 2006-05-15 Joint Stock Company As Close C Boiler-utilizer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4141795A (en) * 1976-07-06 1979-02-27 Nippon Kokan Kabushiki Kaisha Dry type method for quenching coke
SU1600329A1 (ru) * 1985-12-23 1992-02-07 Производственно-Техническое Предприятие Треста "Укрэнергочермет" Установка сухого тушени кокса
RU1778132C (ru) * 1990-05-24 1992-11-30 Кузнецкий Филиал Восточного Научно-Исследовательского Углехимического Института Способ эвакуации избыточного газа из установки сухого тушени кокса
JPH10158656A (ja) * 1996-12-04 1998-06-16 Nippon Steel Corp コークス乾式消火設備
UA14855U (en) * 2006-03-07 2006-05-15 Joint Stock Company As Close C Boiler-utilizer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2489472C2 (ru) * 2011-03-25 2013-08-10 Евгений Алексеевич Данилин Способ сухого тушения кокса

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Publication number Publication date
RU2008128019A (ru) 2010-01-20
UA83981C2 (ru) 2008-08-26

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