[go: up one dir, main page]

CN111322635B - A low oxygen combustion cracking furnace and control method thereof - Google Patents

A low oxygen combustion cracking furnace and control method thereof Download PDF

Info

Publication number
CN111322635B
CN111322635B CN201811525234.2A CN201811525234A CN111322635B CN 111322635 B CN111322635 B CN 111322635B CN 201811525234 A CN201811525234 A CN 201811525234A CN 111322635 B CN111322635 B CN 111322635B
Authority
CN
China
Prior art keywords
damper
side wall
burner
cracking furnace
air door
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.)
Active
Application number
CN201811525234.2A
Other languages
Chinese (zh)
Other versions
CN111322635A (en
Inventor
王哲
俞文元
李敏
黄飞
黄伟
代淼
朱纪林
杜学军
杨晓一
谢忠伟
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.)
China Petroleum and Chemical Corp
Sinopec Shanghai Petrochemical Co Ltd
Original Assignee
China Petroleum and Chemical Corp
Sinopec Shanghai Petrochemical Co Ltd
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 China Petroleum and Chemical Corp, Sinopec Shanghai Petrochemical Co Ltd filed Critical China Petroleum and Chemical Corp
Priority to CN201811525234.2A priority Critical patent/CN111322635B/en
Publication of CN111322635A publication Critical patent/CN111322635A/en
Application granted granted Critical
Publication of CN111322635B publication Critical patent/CN111322635B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N3/00—Regulating air supply or draught
    • F23N3/005—Regulating air supply or draught using electrical or electromechanical means
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G11/00—Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G11/00—Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
    • C10G11/20—Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils by direct contact with inert heated gases or vapours
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2900/00—Special features of, or arrangements for controlling combustion
    • F23N2900/05003—Measuring NOx content in flue gas

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)

Abstract

The invention relates to a low-oxygen combustion cracking furnace and a control method thereof. The side wall burner side of the cracking furnace is provided with an air door adjusting mechanism, and the air inlet quantity of the air door can be adjusted in an equal proportion by adjusting the opening degree of an air door adjusting valve. The control method is that the air door adjusting mechanism is used, the synchronous adjustment of the air doors is matched and implemented according to the ignition condition of the burner through the grouping linkage of the air doors on the side wall, and the problem of overhigh oxygen content can be effectively reduced in time. The control method can reduce the oxygen content of the cracking furnace by 2-3% under special working conditions.

Description

Low-oxygen combustion cracking furnace and control method thereof
Technical Field
The invention belongs to the field of ethylene industry, and particularly relates to a cracking furnace in a steam cracking process and a control method thereof.
Background
At present, large ethylene enterprises exceed the megaton level, and a plurality of domestic enterprises synchronously advance the development of ethylene industry, so that not only is the traditional petroleum cracking, including the ethylene preparation by the emerging ethane cracking, but also a large number of cracking furnaces are required to be matched for implementation. Different types of cracking furnaces are configured for producing ethylene by the steam cracking process, and the cracking furnaces of more patent providers currently adopt a design of combining bottom and side wall heat supply, and the scale of a single cracking furnace gradually develops to 20 ten thousand tons and 30 ten thousand tons. All cracking furnaces are involved with four special stages of ignition and heating, hot standby, burning, cooling and furnace shutdown, wherein the four stages are usually high in oxygen content and are not regulated. The GB 31571-2015 standard executed on 7.1.2017 is used for carrying out conversion and assessment of 3% standard oxygen content on the smoke emission concentration, and the cracking furnace does not adjust the air door of the side wall burner during four working conditions, so that the NOx conversion is easily out of standard while the high oxygen content is caused.
At present, the emission of NOx of an industrial furnace in the national environmental protection standard needs to be reduced to 3% of standard oxygen content for examination. Through a large number of industrial tests, the oxygen content in the flue gas has positive promotion effect on the generation of NOx, and the excessive oxygen content is beneficial to the generation of NOx, so that the traditional burning method which does not control the oxygen content originally cannot guarantee a strict environment-friendly index. The lateral wall burner of the cracking furnace is more, the air door is basically adjusted by manpower in the daily operation process, the labor intensity is quite high, the air door cannot be uniformly adjusted, after the low-nitrogen combustion of the cracking furnace is reformed, the conversion value of NOx is closely related to the oxygen content, the higher oxygen content can cause the conversion of NOx of the cracking furnace to exceed the standard, and particularly, the oxygen content of the cracking furnace is quite high in the ignition and temperature rise processes of the cracking furnace and under the working conditions of combustion Jiao Rebei and the like, so that the conversion of NOx is caused to exceed the standard.
In summary, the process for producing ethylene by steam cracking has a cracking furnace, and at present, more than 80% of the cracking furnaces at home and abroad are used as a mode of combined heat supply of the bottom and the side wall, and meanwhile, due to the improvement of environmental protection pressure, an adjusting mechanism and a method for the oxygen content of the side wall burner are urgently needed to realize low oxygen control.
Disclosure of Invention
The invention aims at the problems, provides a low-oxygen combustion cracking furnace and a control method thereof, and solves the technical problem that the cracking furnace has high oxygen content under special working conditions.
The invention provides a low-oxygen combustion cracking furnace which comprises a cracking furnace body, a bottom combustor, a side wall combustor, a lower mixed superheater, a high-pressure steam superheater II, a high-pressure steam superheater I, an upper mixed superheater, a boiler water supply preheater, a raw material preheater, a fan and a control system.
After the opening of the air door regulating valve is set through the control system, the corresponding air door regulating valve connecting rod enables the connecting rod main shaft to rotate, the connecting rod main shaft rotates through rotating the air door regulating handle connecting rod to realize rotation of the air door regulating handle, and the rotation of the air door regulating handle enables air door blades of the side wall combustor to rotate.
Further, the cracking furnace is provided with one or more side wall burners, the throttle regulating valves on one side of the side wall burners are connected in series through a connecting rod spindle, and the unified action of all throttle can be achieved by adjusting the opening degree of the throttle regulating valve.
Preferably, a damper adjustment mechanism is applied, and every 5% opening of the damper adjustment valve is increased, the damper is increased by 1 grid of air inlet.
The invention also provides a control method of the low-oxygen combustion cracking furnace, which comprises the following steps:
s1, ignition and heating and hot standby processes:
s11, before ignition and temperature rise of the cracking furnace, closing all air doors of the side wall burner through a controller;
S12, igniting a bottom burner to heat the cracking furnace, and controlling heat supply by using the bottom burner;
S13, when the material is ready to be fed into the cracking furnace, igniting the side wall burner, and observing that the highest value of the test value of the furnace cavity NOx is not more than 90mg/Nm 3 along with the addition of the material;
S14, carrying out linkage adjustment control on the air door in time according to a NOx test value, wherein the specific control scheme is that an air door adjusting mechanism is used, accurate gear spacing is matched, and each time the air door adjusting valve is increased by 5%, the air door is increased by 1 grid of air inlet;
When the test value of NOx is higher than 90mg/Nm 3, firstly closing the bottom combustor air door regulating mechanism, assisting in introducing steam for reducing the content of NOx, reducing the oxygen content and reducing the conversion value, so that the NOx is stabilized below 90mg/Nm 3;
When the test value of NOx is lower than 80mg/Nm 3, gradually opening the air door adjusting mechanism of the bottom burner, and gradually opening the air door adjusting mechanism of the side wall burner along with the temperature rise;
When the temperature is stabilized above 800 ℃, the opening degree of the air door of the side wall burner is kept as follows, wherein the opening degree of the top two rows is kept at 100%, and the opening degree of the bottom two rows is kept at 50-60%;
s2, burning, and stopping the furnace for cooling:
s21, gradually extinguishing the side wall burner along with the exit of the raw materials, wherein the air door of the side wall burner needs to be synchronously closed to 50 percent of opening;
s22, keeping a side wall burner air door closed during the burning period of the cracking furnace;
s23, closing all the side wall burner air doors in the cooling process after the burning is finished, and gradually opening the air doors to a full-open state after flameout.
The key protection point of the invention is that the side surface of the side wall burner is provided with the air door adjusting mechanism, so that linkage adjustment of the air door is realized, each time the air door adjusting valve is increased by 5%, the air door is increased by 1 grid of air inlet, and the stability of the air inlet is ensured. If the opening degree is large, the air intake quantity is small, the combustion is insufficient, and if the opening degree is small, the air intake quantity is large, and the oxygen content is excessive.
The low-oxygen combustion cracking furnace and the control method thereof provided by the invention have the following advantages:
(1) The side wall air door adjusting mechanism is arranged on the side face of the side wall burner to realize linkage adjustment of the side wall air door groups, and the method for adjusting the side wall air door in the four processes of burning, hot standby, ignition, heating, cooling and furnace shutdown in the original operation is thoroughly subverted by matching and implementing synchronous integral adjustment of the air door according to the ignition condition of the burner.
(2) The air inlet proportion of the side wall is controlled by a special mode of adjusting the oxygen content, homogenization is achieved, and the problem that the oxygen content is too high due to incapability of timely and effectively adjusting in the past can be solved. The oxygen content can be reduced by 2-3% under special working conditions by adjusting the method.
(3) The invention can also be used for controlling the air door of the daily burner, and the uniformity of the air inlet of each group of burners is realized.
Drawings
FIG. 1 is a schematic diagram of a pyrolysis furnace with low oxygen combustion.
FIG. 2 is a schematic view of a damper adjustment mechanism.
FIG. 3 is a schematic diagram of the connection of the damper adjustment mechanism to the plurality of sidewall burners.
In the figure, a cracking furnace body 1, a bottom burner 2, a side wall burner 3, a lower mixing superheater 4, a high-pressure steam superheater (II) 5, a high-pressure steam superheater (I) 7, an upper mixing superheater 8, a boiler feed water preheater 9, a raw material preheater 10, a fan 11, a throttle adjusting mechanism 12, a throttle adjusting valve 13, a throttle adjusting valve connecting rod 14, a connecting rod main shaft 15, a throttle adjusting handle connecting rod 16, a throttle adjusting handle 17 and a throttle.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that several modifications and improvements can be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
Example 1
The cracking furnace used in the embodiment is a cracking furnace provided with an air door adjusting valve on a side wall burner, and naphtha is used as a raw material, and the method comprises the following steps:
s1, ignition and heating and hot standby processes:
s11, before ignition and temperature rise of the cracking furnace, closing all air doors of the side wall burner through a controller;
S12, igniting a bottom burner to heat the cracking furnace, and controlling heat supply by using the bottom burner;
S13, when the material is ready to be fed into the cracking furnace, igniting the side wall burner, and observing that the highest value of the test value of the furnace cavity NOx is not more than 90mg/Nm 3 along with the addition of the material;
S14, carrying out linkage adjustment control on the air door in time according to a NOx test value, wherein the specific control scheme is that an air door adjusting mechanism is used, accurate gear spacing is matched, and each time the air door adjusting valve is increased by 5%, the air door is increased by 1 grid of air inlet;
When the test value of NOx is higher than 90mg/Nm 3, firstly closing the bottom combustor air door regulating mechanism, assisting in introducing steam for reducing the content of NOx, reducing the oxygen content and reducing the conversion value, so that the NOx is stabilized below 90mg/Nm 3;
When the test value of NOx is lower than 80mg/Nm 3, gradually opening the air door adjusting mechanism of the bottom burner, and gradually opening the air door adjusting mechanism of the side wall burner along with the temperature rise;
When the temperature is stabilized above 800 ℃, the opening degree of the air door of the side wall burner is kept as follows, wherein the opening degree of the top two rows is kept at 100%, and the opening degree of the bottom two rows is kept at 50-60%;
s2, burning, and stopping the furnace for cooling:
s21, gradually extinguishing the side wall burner along with the exit of the raw materials, wherein the air door of the side wall burner needs to be synchronously closed to 50 percent of opening;
s22, keeping a side wall burner air door closed during the burning period of the cracking furnace;
s23, closing all the side wall burner air doors in the cooling process after the burning is finished, and gradually opening the air doors to a full-open state after flameout.
Comparative example 1
The same procedure as in comparative example 1 was followed except that no damper adjustment mechanism was used for adjustment.
Comparison of results:
In comparative example 1, under the condition that a throttle adjusting mechanism is not used, when the ignition temperature of the cracking furnace rises to 250 ℃, NOx can be instantly and rapidly increased to more than 100mg/Nm 3 from 20mg/Nm 3, and the process mainly comprises that the NOx generated after oxygen-enriched combustion is rapidly increased, and the oxygen content can reach more than 16%. Whereas example 1 used a damper adjustment mechanism and intervening in time on the damper, the oxygen level was reduced to below 14% and the NOx was reduced to about 10mg.
In the feeding stage, the air door adjusting mechanism is not used in the comparative example 1, and the air door is opened even though the side wall burner is not at the original point, so that the oxygen content is high and basically maintained at about 12%, but in the embodiment 1, after the air door is operated according to the regulated program S14 through the adjusting mechanism, the oxygen content can be reduced to be within 10%, meanwhile, the fan baffle is further optimized to ensure that the oxygen content is stable, and the process can reduce NOx from 150mg/Nm 3 (comparative example 1) to 110mg/Nm 3.

Claims (3)

1.一种低氧燃烧的裂解炉，包括裂解炉炉体（1）、底部燃烧器（2）、侧壁燃烧器（3）、下混合过热器（4）、高压蒸汽过热器II（5）、高压蒸汽过热器I（6）、上混合过热器（7）、锅炉给水预热器（8）、原料预热器（9）、风机（10）、控制系统，其特征在于，所述的侧壁燃烧器（3）侧面还设置有风门调节机构（11），所述的风门调节机构（11）包括依次相连接的风门调节阀（12）、风门调节阀连接杆（13）、连杆主轴（14）、风门调节手柄连接杆（15）和风门调节手柄（16）；风门调节手柄（16）与侧壁燃烧器（3）的风门（17）相连接；1. A low-oxygen combustion cracking furnace, comprising a cracking furnace body (1), a bottom burner (2), a side wall burner (3), a lower mixing superheater (4), a high-pressure steam superheater II (5), a high-pressure steam superheater I (6), an upper mixing superheater (7), a boiler feed water preheater (8), a raw material preheater (9), a fan (10), and a control system, characterized in that a damper adjustment mechanism (11) is further provided on the side of the side wall burner (3), and the damper adjustment mechanism (11) comprises a damper adjustment valve (12), a damper adjustment valve connecting rod (13), a connecting rod main shaft (14), a damper adjustment handle connecting rod (15), and a damper adjustment handle (16) which are connected in sequence; the damper adjustment handle (16) is connected to the damper (17) of the side wall burner (3); 该裂解炉设置有一个或多个侧壁燃烧器（3），多个侧壁燃烧器（3）一侧的风门调节阀（12）通过一个连杆主轴（14）串联起来，调整风门调节阀（12）的开度可以做到所有风门（17）统一动作；The cracking furnace is provided with one or more side wall burners (3), and the air damper regulating valves (12) on one side of the plurality of side wall burners (3) are connected in series via a connecting rod main shaft (14), and the opening of the air damper regulating valve (12) can be adjusted to achieve uniform operation of all the air dampers (17); 低氧燃烧的裂解炉的控制方法包括下列步骤：The control method of the cracking furnace of low oxygen combustion comprises the following steps: S1. 点火升温、热备过程：S1. Ignition, heating and hot standby process: S11：裂解炉点火升温前，将侧壁燃烧器的风门通过控制器全部关闭；S11: Before the cracking furnace is ignited and heated, the air dampers of the side wall burners are all closed through the controller; S12：点燃底部燃烧器，使裂解炉升温，用底部燃烧器进行供热控制；S12: Ignite the bottom burner to raise the temperature of the cracking furnace and use the bottom burner for heat supply control; S13：当准备向裂解炉投料时，点燃侧壁燃烧器，随着物料的加入，观察炉膛NOx的测试值最高值不大于90mg/Nm3；S13: When preparing to feed the cracking furnace, ignite the side wall burner, and as the material is added, observe that the maximum value of the furnace NOx test value is no more than 90 mg/Nm3; S14：随时根据NOx的测试值对风门及时进行联动调整控制，具体控制方案为：使用风门调节机构，配合精确的齿轮间距，风门调节阀每增加5%开度，风门增加1格进风；S14: timely linkage adjustment and control of the damper according to the NOx test value at any time. The specific control scheme is: using the damper adjustment mechanism, with precise gear spacing, the damper increases the air intake by 1 grid for every 5% increase in the opening of the damper regulating valve; 当NOx的测试值高于90mg/Nm3时，首先关小底部燃烧器风门调节机构，辅助通入降低NOx含量的蒸汽，降低氧含量，减少折算值，使NOx稳定在90mg/Nm3以下；When the test value of NOx is higher than 90mg/Nm3, firstly close the damper adjustment mechanism of the bottom burner, assist in introducing steam that reduces the NOx content, reduce the oxygen content, reduce the conversion value, and stabilize NOx below 90mg/Nm3; 当NOx的测试值低于80 mg/Nm3时，逐步开大底部燃烧器的风门调节机构，随着温度的提升，侧壁燃烧器风门调节机构也逐步开大；When the test value of NOx is lower than 80 mg/Nm3, gradually open the damper adjustment mechanism of the bottom burner, and as the temperature rises, gradually open the damper adjustment mechanism of the side wall burner; 当温度稳定在800℃以上时，保持侧壁燃烧器的风门开度如下：最上面两排保持100%开度，最下面两排保持50~60%之间的开度；在保持侧壁风门稳定后，随着温度的提升，逐步开大底部燃烧器的风门，同时观察炉膛负压，对风机挡板进行调整使炉膛负压控制在稳定的-30~-50Pa之间；When the temperature is stable above 800℃, keep the air door opening of the side wall burners as follows: the top two rows are kept at 100% opening, and the bottom two rows are kept at 50~60% opening; after keeping the side wall air door stable, as the temperature rises, gradually open the air door of the bottom burner, observe the negative pressure in the furnace at the same time, and adjust the fan damper to keep the negative pressure in the furnace stable between -30~-50Pa; S2. 烧焦、停炉降温过程：S2. Burning, furnace shutdown and cooling process: S21：随着原料的退出，侧壁燃烧器逐渐熄灭，侧壁燃烧器的风门需要同步进行关至50%开度；S21: As the raw materials are withdrawn, the side wall burner is gradually extinguished, and the air door of the side wall burner needs to be closed to 50% opening at the same time; S22：裂解炉烧焦期间保持侧壁燃烧器风门的关闭；S23：烧焦结束降温过程中侧壁燃烧器风门全部关闭，当熄火后，风门逐步开大至全开状态。S22: Keep the side wall burner damper closed during the charring period of the cracking furnace; S23: All the side wall burner dampers are closed during the cooling process after the charring is completed. When the flame is turned off, the dampers are gradually opened to a fully open state. 2.根据权利要求1所述的低氧燃烧的裂解炉，其特征在于，所述的风门调节阀（12）通过控制系统的开度设定后，对应的风门调节阀连接杆（13）使连杆主轴（14）进行转动，连杆主轴（14）通过转动风门调节手柄连接杆（15）来实现风门调节手柄（16）的转动，风门调节手柄（16）的转动使侧壁燃烧器（3）的风门（17）叶片随之发生转动。2. The low-oxygen combustion cracking furnace according to claim 1 is characterized in that after the opening of the damper regulating valve (12) is set by the control system, the corresponding damper regulating valve connecting rod (13) causes the connecting rod main shaft (14) to rotate, and the connecting rod main shaft (14) realizes the rotation of the damper regulating handle (16) by rotating the damper regulating handle connecting rod (15), and the rotation of the damper regulating handle (16) causes the damper (17) blades of the side wall burner (3) to rotate accordingly. 3.根据权利要求1所述的低氧燃烧的裂解炉，其特征在于，应用风门调节机构（11），风门调节阀（12）每增加5%开度，风门（17）增加1格进风。3. The low-oxygen combustion cracking furnace according to claim 1 is characterized in that a damper adjustment mechanism (11) is used, and when the damper adjustment valve (12) increases its opening by 5%, the damper (17) increases the air intake by 1 grid.
CN201811525234.2A 2018-12-13 2018-12-13 A low oxygen combustion cracking furnace and control method thereof Active CN111322635B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811525234.2A CN111322635B (en) 2018-12-13 2018-12-13 A low oxygen combustion cracking furnace and control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811525234.2A CN111322635B (en) 2018-12-13 2018-12-13 A low oxygen combustion cracking furnace and control method thereof

Publications (2)

Publication Number Publication Date
CN111322635A CN111322635A (en) 2020-06-23
CN111322635B true CN111322635B (en) 2025-06-27

Family

ID=71164741

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811525234.2A Active CN111322635B (en) 2018-12-13 2018-12-13 A low oxygen combustion cracking furnace and control method thereof

Country Status (1)

Country Link
CN (1) CN111322635B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111678169A (en) * 2020-07-16 2020-09-18 中国船舶重工集团公司第七0三研究所 An ignition device for improving the service cycle of oil-fired boilers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106631659A (en) * 2015-10-29 2017-05-10 中国石油化工股份有限公司 Steam cracking method
CN107477570A (en) * 2017-07-21 2017-12-15 中航世新燃气轮机股份有限公司沈阳分公司 The ultralow discharged nitrous oxides process of ethane cracking furnace combustion system
CN209622846U (en) * 2018-12-13 2019-11-12 中国石油化工股份有限公司 A kind of pyrolysis furnace of low oxygen combustion

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2850392B1 (en) * 2003-01-27 2007-03-09 Inst Francais Du Petrole PROCESS FOR THERMALLY TREATING HYDROCARBON FILLERS WITH OVEN EQUIPPED WITH RADIANT BURNERS
CN101936529B (en) * 2010-09-29 2012-05-23 中国石油化工股份有限公司 Sidewall gas burner capable of reducing emission of nitrogen oxides
US8703064B2 (en) * 2011-04-08 2014-04-22 Wpt Llc Hydrocabon cracking furnace with steam addition to lower mono-nitrogen oxide emissions

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106631659A (en) * 2015-10-29 2017-05-10 中国石油化工股份有限公司 Steam cracking method
CN107477570A (en) * 2017-07-21 2017-12-15 中航世新燃气轮机股份有限公司沈阳分公司 The ultralow discharged nitrous oxides process of ethane cracking furnace combustion system
CN209622846U (en) * 2018-12-13 2019-11-12 中国石油化工股份有限公司 A kind of pyrolysis furnace of low oxygen combustion

Also Published As

Publication number Publication date
CN111322635A (en) 2020-06-23

Similar Documents

Publication Publication Date Title
CN215175196U (en) Temperature control system of coal mill outlet based on furnace smoke inerting
CN101576314A (en) Ignition control system of tube furnace
WO2017210946A1 (en) Novel fully pre-mixing gas-fired heating system and control method thereof
CN201892219U (en) Combustion device of low heating value exhaust boiler
CN111059568B (en) A control system and control method of waste gas burner
CN107990741B (en) A kind of carbonization furnace waste heat utilization temperature control device and temperature control method
CN111322635B (en) A low oxygen combustion cracking furnace and control method thereof
CN209622846U (en) A kind of pyrolysis furnace of low oxygen combustion
CN205619781U (en) Modified heating furnace radiation pipeline section burning control system
CN109442394B (en) Biomass combustion machine and biomass combustion method
CN106152134A (en) A kind of Intelligent gas furnace being automatically adjusted air-fuel ratio
CN108949206A (en) A kind of inside and outside dual-heating type pyrolysis installation
CN109282276B (en) Biomass gasifier
CN112944886A (en) Solid waste preparation lightweight aggregate rotary kiln device for simulation experiment
CN202221102U (en) Heating control system of heating furnace of extrusion machine
CN207486788U (en) A kind of circulating fluidized bed boiler of blending gas
CN104342527B (en) A kind of method using nitrogen dilution coke-stove gas to burn stove
CN206234819U (en) A kind of heating furnace spout device that can realize secondary mixed combustion
CN109681909A (en) A kind of W type flame combustion mode boiler uses the method for controlling combustion of meager coal
CN110500595B (en) Method suitable for waste incineration air distribution of Martin furnace
CN210511758U (en) Industrial boiler structure for co-combustion of blast furnace gas and coke oven gas
CN119802568B (en) Environment-friendly standard-reaching rapid starting control method for gas-fired boiler
CN114317014A (en) Partial premixing combustion device and method for oxygen-enriched combustion internal heating type coal low-temperature carbonization furnace
CN111500856B (en) Auxiliary burner chain grate for vanadium-titanium pellet production and use method
CN206755139U (en) A kind of coal-fired thermal power generation unit starter

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant