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WO2012128654A1 - Procédé de réchauffement d'un maçonnage réfractaire d'une baterie à coke - Google Patents

Procédé de réchauffement d'un maçonnage réfractaire d'une baterie à coke Download PDF

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Publication number
WO2012128654A1
WO2012128654A1 PCT/RU2011/000074 RU2011000074W WO2012128654A1 WO 2012128654 A1 WO2012128654 A1 WO 2012128654A1 RU 2011000074 W RU2011000074 W RU 2011000074W WO 2012128654 A1 WO2012128654 A1 WO 2012128654A1
Authority
WO
WIPO (PCT)
Prior art keywords
heating
days
period
kindling
butane
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/RU2011/000074
Other languages
English (en)
Russian (ru)
Inventor
Владимир Федорович БОГДАНОВ
Виктор Азисович КУРМАЕВ
Анатолий Александрович ЛЕВЧЕНКО
Николай Александрович НОВИКОВ
Николай Александрович ЧЕМАРДА
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
" " ("okoc")
CLOSED JOINT-STOCK Co "OGNEUPORKOKSSERVIS" (CJSC "OKOS")
Original Assignee
" " ("okoc")
CLOSED JOINT-STOCK Co "OGNEUPORKOKSSERVIS" (CJSC "OKOS")
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 " " ("okoc"), CLOSED JOINT-STOCK Co "OGNEUPORKOKSSERVIS" (CJSC "OKOS") filed Critical " " ("okoc")
Priority to PCT/RU2011/000074 priority Critical patent/WO2012128654A1/fr
Publication of WO2012128654A1 publication Critical patent/WO2012128654A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • C10B17/00—Preheating of coke ovens
    • 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
    • C10B21/00—Heating of coke ovens with combustible gases
    • C10B21/08—Heating of coke ovens with combustible gases by applying special heating gases

Definitions

  • the invention relates to the field of coke chemistry, and can be used for heating and commissioning of coke oven batteries using liquefied propane-butane.
  • Heating the coke oven battery with liquefied gas (propane-butane) is mainly used when commissioning the head (first) of the coke oven battery at a single enterprise, while there are either no other sources of gas supply for heating, or they are not available in sufficient quantity.
  • refractory materials such as dinas and fireclay are used, which together with high thermal conductivity have a large coefficient of thermal expansion.
  • dinas is heated from ambient temperature to operating temperatures, the level of which is from 1150 to 1450 ° ⁇
  • modifications of quartz silicon dioxide, Si0 2
  • the change in volume can be from 0.1% to 3.0%.
  • Structural transformations of quartz in dinas products occur in the temperature range 1 17 ° C, 163 ° C, 230 ° C, 573 ° C, 870 ° C and can violate their strength.
  • dinas At a large thermal expansion of dinas at the stage of low-temperature (below 300 ° C) transformations of quartz and its modifications (tridymite and especially cristobalite), dinas is thermally unstable. These circumstances require the use of a special heating technology that allows you to strictly maintain a given technological mode for raising the temperature of the refractory masonry of coke oven furnaces.
  • the average daily temperature increase of the refractory masonry should be strictly observed according to the stages of heating. Depending on the specific stage of heating, it is from about 5 to 50 ° C per day.
  • the fuel for heating the coke oven battery can be various types of gases: coke, natural, blast furnace, generator.
  • coke can be various types of gases: coke, natural, blast furnace, generator.
  • propane-butane liquefied gas
  • the known method cannot provide a safe and high-quality heating of the coke oven battery, for example with propane-butane, since at minimum gas flow rates at the initial stage of heating, when air injection due to the gas jet is not provided within the limits necessary for high-quality and complete (smokeless) combustion of the heating gas , soot clogging of the nozzles of the regenerators occurs and the disorder of the battery heating process.
  • a known method of heating the refractory masonry of a coke oven battery using a gaseous coolant the use of compressed air is recommended, the coolant is supplied to the heating channels and heated by heat exchange through the heat of the hot nodes of the coke oven battery, and the masonry is heated using a gaseous coolant to a temperature of 250 ° C during high-altitude masonry, and the heating of new heating canals are produced up to a temperature of 500 ° C immediately after completion of masonry construction works (RU 2062282, 1996).
  • the known method is not convenient to use, since partial heating has to be done during the repair process, during the laying of the furnace.
  • the objective of the present invention is to ensure uniform heating of the refractory masonry of coke oven batteries with a limited selection of coolants, and without the use of external furnaces.
  • the problem is solved by the described method of heating the refractory masonry of the coke oven battery, including supplying heating gas to the coke oven chambers and heating in accordance with a predetermined temperature regime, in which liquefied propane butane is used as heating gas, the liquefied gas is first subjected to regasification in the evaporator-heat exchanger, then fed to the burners, each of which is equipped with a screen, and installed in the temporary internal furnace of each coke oven from the machine and coke sides of the battery, this through a kindling window made in the facade of the temporary internal firebox, a regulated air flow is supplied into the firebox in an amount necessary and sufficient for stable combustion of the propane butane torch during the entire heating process, moreover, the amount of air supplied to the firebox is regulated using movable dampers installed in the kindling windows, and providing the possibility of changing the free area of the kindling window during the heating process, the specified temperature mode of heating is maintained by adjusting the furnace traction and the flow rate about to propane
  • the heating is carried out for 65-70 days to a temperature of 1000 - 1050 ° C.
  • the rate of temperature rise during heating is 5.5-6.5 ° per day during the first 32 days, 9 ° per day during the 33rd to 35th days, and the 39th during the 36th period days 12 ° per day, during the 40s - 44th days 15 ° per day, during the 45s - 47th days 18 ° C, during the 48th - 50th days 21 ° per day, in the period of 51st - 59th day 24 ° C, in the period of 60th - 62nd day 32 °, in the period of 63-64 days 36 ° per day and then at a speed of 48 ° per day until the output to the specified mode .
  • the claimed method can be implemented, for example, using devices, the design and installation diagram of which is illustrated below.
  • Figure 1 temporary internal firebox, laid out of fireclay bricks inside each coking chamber of the heated battery;
  • Figure 2 burner for burning propane butane in the internal furnace, installed in each furnace from the machine and coke side of the battery;
  • FIG. 3 Burner with a screen made in the form of a stainless steel mesh
  • Figure 4 movable damper that regulates the air supply, placed in the kindling window in front of each burner;
  • Figure 5 is a General view of the node supplying gas to a temporary furnace.
  • the following process parameters are calculated depending on the volume of the refractory masonry of the coke oven battery: - heating gas costs for the heating stages (for one burner and for the whole battery, calculated on the basis of the known need for energy consumption to maintain a given temperature increase and calorific value of liquefied propane butane);
  • a warehouse is being built to store the required amount of liquefied propane-butane and a unit for its regasification, including evaporators and heat exchangers for transferring the coolant from a liquid to a gaseous state.
  • evaporators and heat exchangers for transferring the coolant from a liquid to a gaseous state.
  • Temporary masonry configuration internal firebox does not depend on the type of heat carrier used.
  • FIG. 1 A general view of the temporary masonry of the internal firebox is shown in Fig. 1, while under p. 1 the furnace hearth is indicated, p. 2 is the furnace arch line, and the input sections of the kindling windows of p. 3 are possibly increased, based on the design features of the stoves of a specific battery .
  • a temporary gas supply pipeline for gas supply for heating the battery from the regasification unit to the chimney and to the battery from the machine and coke side is mounted.
  • burners of a special design are installed through the windows provided for them in the internal furnaces of p.
  • Heating gas from a temporary gas pipeline, connected to the coking chamber to be heated, enters the main burner tube, p. 5, which is connected to the gas supply from the temporary gas pipeline of p.
  • a directed air flow is fed into the firebox, which cuts the gas stream of the burner, and provides the mixture of gas and air required for high-quality combustion due to the intersection of the air stream with the gas stream.
  • a screen is hung (see Fig. 3, item 12), which is a rectangle of metal mesh (mainly stainless steel) bent in three places parallel to one of its faces so that it rests under the force of its own weight into the ends of the exhaust pipes of the burner of item 9 closed by plugs 11, looking up and pressed against both gas exhaust pipes of the burner of item 9 from the side of the burner looking deep into the coking chamber below all gas outlets of clause 10.
  • the screen will be constantly in a red-hot state from the burning torch, and if the torch suddenly goes out (is blown out), the stream of raw gas will ignite again in contact with the red-hot screen grid and combustion will resume.
  • the required level of air flow at which sufficient air is supplied from the external environment for stable flame burning, is ensured by closing the windows in the internal furnaces of section 3 with the movable dampers shown in Fig. 4: into the masonry of the facade of the temporary firebox between the rows of bricks forming the lower and the upper boundary of the kindling window of p. 3, respectively, the upper guide p. 13.1 and the lower support-guide p. 13.2 are installed metal corners.
  • each leaf receives one degree of freedom in the form of horizontal movement (in a plane adjacent to the facade of the temporary firebox) with a change in the area of the kindling window and a corresponding change in the flow of atmospheric air supplied into the temporary firebox.
  • the set temperature mode is maintained by adjusting the draft (total draft of the chimney and discharge in the chimney fumes) and the flow rate of the heating gas.
  • the total gas flow to the battery and separately to the coke and machine sides is regulated by valves on a temporary gas pipeline. There are also valves of clause 15 for shutting off the gas supply to each burner separately.
  • the gas flow rate is regulated by installing interchangeable diaphragms in the flange connections of item 16 immediately before each th azo p gr eay etapv ⁇ 13
  • Burner by oo og p e r m p mV yv strand at replaceable diaphragm can change the inner diameter of the gas supply pipe, which will provide the change in volume of gas supplied to the burner.
  • Table 1 shows a specific example of a phased continuous heating of the refractory masonry in accordance with the claimed method.
  • the method is characterized by the continuity of the process and a quite acceptable consumption of affordable and cheap heat carrier - liquefied propane-butane.
  • the claimed method can be implemented using fairly simple devices, which simplifies the method as a whole, ensures the continuity and uniformity of masonry heating in the absence of external furnaces for heating.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

L'invention concerne la chimie du coke et porte sur un procédé de chauffage d'un maçonnage réfractaire d'une batterie à coke selon lequel on utilise en tant que gaz de chauffage du propane / butane liquéfié qui est d'abord soumis à une regazéification dans un évaporateur / échangeur de chaleur puis amené jusqu'aux brûleurs dont chacun est muni d'un écran et monté dans une chaudière interne provisoire de chaque four à coke du côté machine et coke de la batterie; à travers chaque ouverture d'allumage faite dans la façade de la chaudière interne provisoire on alimente la chaudière avec un flux d'air régulé, la régulation de la quantité d'air fourni dans la chaudière étant effectuée au moyen de volets mobiles montés dans les ouvertures d'allumage et assurant la possibilité de modifier la surface libre de l'ouverture d'allumage pendant le réchauffement, et le régime prédéterminé de température du réchauffement est entretenu par la régulation de l'appel d'air du four et du débit de propane / butane fourni aux brûleurs. L'invention permet d'assurer un réchauffement égale du maçonnage en absence de chaudières.
PCT/RU2011/000074 2011-03-24 2011-03-24 Procédé de réchauffement d'un maçonnage réfractaire d'une baterie à coke Ceased WO2012128654A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/RU2011/000074 WO2012128654A1 (fr) 2011-03-24 2011-03-24 Procédé de réchauffement d'un maçonnage réfractaire d'une baterie à coke

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/RU2011/000074 WO2012128654A1 (fr) 2011-03-24 2011-03-24 Procédé de réchauffement d'un maçonnage réfractaire d'une baterie à coke

Publications (1)

Publication Number Publication Date
WO2012128654A1 true WO2012128654A1 (fr) 2012-09-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2011/000074 Ceased WO2012128654A1 (fr) 2011-03-24 2011-03-24 Procédé de réchauffement d'un maçonnage réfractaire d'une baterie à coke

Country Status (1)

Country Link
WO (1) WO2012128654A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017160315A (ja) * 2016-03-09 2017-09-14 新日鐵住金株式会社 コークス炉の炉体設備における火入れ時の炉体乾燥方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1357566A (en) * 1970-10-30 1974-06-26 Koppers Gmbh Heinrich Preheating of the oven chambers and/or trunk flues of regenerative coke oven batteries
RU2062282C1 (ru) * 1989-10-06 1996-06-20 Крупп Копперс ГмбХ Способ ремонта нагревательных каналов коксовой батареи и устройство для прогрева кладки нагревательных каналов при их ремонте
US7037409B1 (en) * 1999-03-09 2006-05-02 Thyssen Krupp Encoke Gmbh Method of hot-repairing the heating flues of a coke-oven battery and device for carrying out said method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1357566A (en) * 1970-10-30 1974-06-26 Koppers Gmbh Heinrich Preheating of the oven chambers and/or trunk flues of regenerative coke oven batteries
RU2062282C1 (ru) * 1989-10-06 1996-06-20 Крупп Копперс ГмбХ Способ ремонта нагревательных каналов коксовой батареи и устройство для прогрева кладки нагревательных каналов при их ремонте
US7037409B1 (en) * 1999-03-09 2006-05-02 Thyssen Krupp Encoke Gmbh Method of hot-repairing the heating flues of a coke-oven battery and device for carrying out said method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017160315A (ja) * 2016-03-09 2017-09-14 新日鐵住金株式会社 コークス炉の炉体設備における火入れ時の炉体乾燥方法

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