CN104560064A - Hot-blast stove system for heating semi-coke coal gas - Google Patents
Hot-blast stove system for heating semi-coke coal gas Download PDFInfo
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- CN104560064A CN104560064A CN201410765903.9A CN201410765903A CN104560064A CN 104560064 A CN104560064 A CN 104560064A CN 201410765903 A CN201410765903 A CN 201410765903A CN 104560064 A CN104560064 A CN 104560064A
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- blast stove
- heating
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- 239000003034 coal gas Substances 0.000 title claims abstract description 38
- 238000010438 heat treatment Methods 0.000 title claims abstract description 24
- 239000000571 coke Substances 0.000 title abstract description 55
- 239000007789 gas Substances 0.000 claims abstract description 143
- 239000003610 charcoal Substances 0.000 claims abstract description 49
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000003546 flue gas Substances 0.000 claims abstract description 40
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 239000003245 coal Substances 0.000 claims abstract description 7
- 238000000746 purification Methods 0.000 claims abstract description 7
- 238000000197 pyrolysis Methods 0.000 claims abstract description 5
- 238000002485 combustion reaction Methods 0.000 claims description 23
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 238000005338 heat storage Methods 0.000 claims 3
- 238000004140 cleaning Methods 0.000 claims 2
- 239000011449 brick Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 9
- 230000001105 regulatory effect Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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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
- C10B21/00—Heating of coke ovens with combustible gases
- C10B21/10—Regulating and controlling the combustion
- C10B21/12—Burners
-
- 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
- C10B21/10—Regulating and controlling the combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
- F23K5/002—Gaseous fuel
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Coke Industry (AREA)
Abstract
一种用于加热兰炭煤气的热风炉系统，其属于煤化工技术领域。其主要包括以下内容：兰炭炉2产生的荒兰炭煤气被送入煤气净化装置3，净化后的兰炭煤气，其一部分被送到用户4，另一部分被送到煤气加压装置5，加压后的兰炭煤气被送入热风炉1(已烧好)加热。热兰炭煤气通过热煤气管道7被送入兰炭炉2，用于煤干馏生产兰炭。还有一部分净兰炭煤气被送到烟气与煤气混合装置6。热风炉1(正在烧)产生的烟气通过烟气管道8，一部分由烟囱9排出，另一部分被送入烟气与煤气混合装置6与净兰炭煤气混合，混合气体被送入热风炉1(正在烧)供其燃烧使用。优点在于，可使兰炭煤气含极少的氮气，其热值大幅提高，使用成本降低，使用范围扩大。
A hot blast stove system for heating semi-coke gas belongs to the technical field of coal chemical industry. It mainly includes the following content: the barren charcoal gas produced by the semi-coke furnace 2 is sent to the gas purification device 3, and part of the purified semi-coal gas is sent to the user 4, and the other part is sent to the gas pressurization device 5, The blue charcoal gas after pressurization is sent into hot blast stove 1 (burned) heating. The hot blue charcoal gas is sent into the blue charcoal furnace 2 through the hot gas pipeline 7, and is used for coal dry distillation to produce blue charcoal. Also have a part of net blue charcoal gas to be delivered to flue gas and coal gas mixing device 6. The flue gas produced by the hot blast stove 1 (burning) passes through the flue gas pipe 8, part of it is discharged from the chimney 9, and the other part is sent to the flue gas and gas mixing device 6 to mix with clean blue coal gas, and the mixed gas is sent to the hot blast stove 1 (burning) for its burning use. The advantage is that the semi-coke gas can contain very little nitrogen, its calorific value is greatly increased, the use cost is reduced, and the use range is expanded.
Description
技术领域：Technical field:
本发明涉及一种用于加热兰炭煤气的热风炉系统，其属于煤化工技术领域。The invention relates to a hot blast stove system for heating blue charcoal gas, which belongs to the technical field of coal chemical industry.
背景技术：Background technique:
用内热式低温干馏兰炭炉(本文中简称兰炭炉)生产兰炭过程中，由于助燃空气的加入使得气态产物(兰炭煤气)中氮气含量约占48％，氮气含量高给后续煤气净化，煤气输送，燃烧利用等工序带来了额外的设备投资及能源消耗。In the process of producing semi-coke with an internal heating type low-temperature dry distillation blue-coke furnace (abbreviated as blue-coke furnace in this article), the nitrogen content in the gaseous product (blue-coke gas) accounts for about 48% due to the addition of combustion-supporting air, and the high nitrogen content will facilitate subsequent gas purification. , Gas transportation, combustion utilization and other processes have brought additional equipment investment and energy consumption.
目前净化后的兰炭煤气主要用于发电或作为工厂的气体燃料被使用，若使兰炭煤气中不含或少含氮气，则一氧化碳和氢气的含量将大幅提高，这样的兰炭煤气可作为合成氨或甲醇等化工生产的原料气，此兰炭煤气热值大幅提高，使用成本降低，使用范围扩大。At present, the purified semi-coke gas is mainly used for power generation or used as gas fuel in factories. If the semi-coke gas contains no or less nitrogen, the content of carbon monoxide and hydrogen will increase significantly. Such semi-coke gas can be used as As raw material gas for chemical production such as synthetic ammonia or methanol, the calorific value of semi-coal gas has been greatly increased, the use cost has been reduced, and the use range has been expanded.
要去除或降低兰炭煤气中的氮气含量，就须限制空气参与兰炭炉的生产。一种设想方案由此产生，外引一部分净化后的兰炭煤气(仅供开炉临时使用)，用热风炉将其加热到煤干馏生产兰炭所需的温度，将此热兰炭煤气通入兰炭炉进行煤干馏生产兰炭。产生的兰炭煤气中氮气含量降低，净化后大部分供给其他用户，其中一部分供热风炉燃烧，另一部分再被热风炉加热后用于兰炭生产，循环使用多次后，所得的兰炭煤气中不含或少含氮气。To remove or reduce the nitrogen content in the semi-coke gas, it is necessary to limit the participation of air in the production of the semi-coke furnace. A kind of conceived scheme is thus produced, and a part of the purified semi-coke gas (only for the temporary use of the furnace) is introduced outside, heated to the temperature required for coal dry distillation to produce semi-coke with a hot blast stove, and the hot semi-coke gas is ventilated. Enter the semi-coke furnace for coal dry distillation to produce semi-coke. The nitrogen content in the generated semi-coke gas is reduced, and most of it is supplied to other users after purification. Part of it is used for combustion in the hot blast stove, and the other part is used for semi-coke production after being heated by the hot blast stove. After repeated use, the resulting semi-coke The gas contains little or no nitrogen.
发明内容：Invention content:
为实现上述方案，本发明提供一种用于加热兰炭煤气的热风炉系统。其技术方案包括以下步骤：In order to realize the above solution, the present invention provides a hot blast stove system for heating semi-coal gas. Its technical scheme includes the following steps:
外引一部分净化后的兰炭煤气(仅供开炉临时使用)，通过管道通往烟气与煤气混合装置，第一次不用混合烟气，因为外引兰炭煤气热值符合热风炉燃烧条件。然后通过管道引至热风炉(正在烧)的燃烧器。A part of the purified semi-coke gas (only for temporary use when starting the furnace) is introduced to the flue gas and coal gas mixing device through the pipeline. It is not necessary to mix the flue gas for the first time, because the calorific value of the semi-coke gas is in line with the combustion conditions of the hot blast stove . Then lead to the burner of the hot blast stove (burning) through the pipeline.
助燃空气供应装置提供的助燃空气通过管道引至热风炉(正在烧)的燃烧器。The combustion-supporting air provided by the combustion-supporting air supply device is led to the burner of the hot blast stove (burning) through the pipeline.
兰炭煤气和助燃空气按一定比例混入热风炉(正在烧)的燃烧器，热风炉(正在烧)点火燃烧。燃烧后的热烟气通过热风炉(正在烧)内蓄热体，将蓄热体加热后通过烟道及烟囱排出。Semi-coal gas and combustion-supporting air are mixed into the burner of the hot blast stove (burning) in a certain proportion, and the hot blast stove (burning) is ignited and burned. The hot flue gas after combustion passes through the regenerator in the hot blast stove (burning), heats the regenerator and discharges it through the flue and chimney.
外引另一部分净化后的兰炭煤气(仅供开炉临时使用)，通过管道引入煤气加压装置，按热风炉及兰炭炉的需要将其加压，加压后的冷兰炭煤气通过管道引入热风炉(已烧好)下部。Another part of the purified semi-coke gas (only for temporary use when starting the furnace) is introduced into the gas pressurization device through the pipeline, and it is pressurized according to the needs of the hot blast stove and the semi-coke furnace. The pressurized cold semi-coke gas passes through the The pipeline is introduced into the lower part of the hot blast stove (burned).
冷兰炭煤气被热风炉(已烧好)内热蓄热体加热后，从热风炉上部通过热煤气管道被送至兰炭炉。热煤气管道上还连接有冷煤气管道，用于调节送入兰炭炉的煤气温度以满足生产兰炭需要。After the cold semi-coke gas is heated by the thermal storage body in the hot blast stove (already burned), it is sent to the semi-coke stove from the upper part of the hot blast stove through the hot gas pipeline. The hot gas pipeline is also connected with a cold gas pipeline, which is used to adjust the temperature of the gas sent into the semi-coke furnace to meet the needs of producing semi-coke.
当兰炭炉正式生产时，停止外引兰炭煤气的供应。兰炭炉产生的兰炭煤气由管道输送至煤气净化装置，净化后的兰炭煤气一部分被送至用户，另一部分被送至烟气与煤气混合装置与热风炉(正在烧)烟气混合后供热风炉(正在烧)燃烧使用。还有一部分被送至煤气加压装置被加压后，通过冷煤气管道送入热风炉(已烧好)被加热。When the semi-coke furnace is officially produced, the supply of semi-coke gas will be stopped. The semi-coke gas produced by the semi-coke furnace is transported to the gas purification device through the pipeline. Part of the purified semi-coke gas is sent to the user, and the other part is sent to the flue gas and coal gas mixing device to mix with the flue gas of the hot blast stove (burning) It is used for hot blast stove (burning). There is also a part that is sent to the gas pressurization device after being pressurized, and then sent into the hot blast stove (burned) by the cold gas pipeline to be heated.
热风炉(正在烧)燃烧产生的烟气，其一部分通过烟道被输送到烟囱排出，另一部分被输送至烟气与煤气混合装置，和兰炭煤气混合后被送至热风炉(正在烧)的燃烧器参与燃烧。Part of the flue gas produced by the combustion of the hot blast stove (burning) is sent to the chimney through the flue, and the other part is sent to the flue gas and coal gas mixing device, mixed with semi-coal gas and sent to the hot blast stove (burning) The burner participates in the combustion.
氮气由管道通入助燃空气管道，在热风炉烧炉和加热煤气状态互换时打开氮气阀门，将空气管道短管及热风炉内空气由烟囱排出。Nitrogen is passed through the pipeline into the combustion-supporting air pipeline, and the nitrogen valve is opened when the hot blast stove burns and the heating gas is switched, and the short pipe of the air pipeline and the air in the hot blast stove are discharged from the chimney.
在兰炭煤气被热风炉(已烧好)加热前的冷煤气管道上设有氧含量检测装置。在经过烟气与煤气混合装置后的混合气体管道上设置氧含量检测装置和煤气热值检测装置。在进入兰炭炉前的热煤气管道上设有温度检测装置和事故放风阀。热风炉助燃空气支管及热风炉(正在烧)烟气与兰炭煤气的混合气体支管上均设有调节阀，与热煤气管道相连的冷煤气管道上也设有调节阀。An oxygen content detection device is arranged on the cold gas pipeline before the semi-coal gas is heated by the hot blast stove (already burned). An oxygen content detection device and a gas calorific value detection device are arranged on the mixed gas pipeline passing through the flue gas and coal gas mixing device. A temperature detection device and an emergency vent valve are installed on the hot gas pipeline before entering the semi-coke furnace. The hot blast stove combustion-supporting air branch pipe and the mixed gas branch pipe of the hot blast stove (burning) flue gas and semi-coal gas are all provided with regulating valves, and the cold gas pipe connected to the hot gas pipe is also provided with a regulating valve.
热风炉工作制度按热风炉数量及操作指定。本文以共有三座热风炉的情况为例进行简述。The working system of the hot blast stove is specified according to the number and operation of the hot blast stove. This article briefly describes the situation of three hot blast stoves as an example.
两座热风炉燃烧兰炭煤气加热其蓄热体，当一座热风炉将其蓄热体加热到指定温度时，此热风炉停止燃烧，进行热风炉阀门切换，往此热风炉通入冷兰炭煤气，被加热后的热兰炭煤气被送往兰炭炉，再开始点火燃烧另一座冷的热风炉(此热风炉之前加热冷兰炭煤气，此时停止加热，进行热风炉阀门切换)。以次类推，可保证向兰炭炉输送连续的热兰炭煤气。Two hot blast stoves burn blue charcoal gas to heat their regenerators. When one hot blast stove heats its regenerator to a specified temperature, the hot blast stove stops burning, and the valve of the hot blast stove is switched, and cold blue charcoal is fed into the hot blast stove. Coal gas, the heated hot blue charcoal gas is sent to the blue charcoal stove, and then starts to ignite and burn another cold hot blast stove (the hot blast stove heated the cold blue charcoal gas before, and stopped heating at this time, and switched the hot blast stove valve). By analogy, it can ensure that the continuous hot semi-coke gas is delivered to the semi-coke furnace.
本发明由于采取以上技术方案，其具有以下优点：极大降低了兰炭煤气中的氮气含量，使其热值提高，应用范围扩大。热兰炭煤气的温度调节能力加强，更加满足生产兰炭的需要。部分热风炉(正在烧)烟气被自身循环使用，提高其节能环保的能力。Due to the adoption of the above technical scheme, the present invention has the following advantages: the nitrogen content in the semi-coke gas is greatly reduced, the calorific value is increased, and the application range is expanded. The temperature adjustment ability of hot blue charcoal gas is enhanced, which can better meet the needs of semi-coke production. Part of the hot blast stove (burning) flue gas is recycled by itself to improve its energy saving and environmental protection capabilities.
附图说明：Description of drawings:
图1是本发明加热兰炭煤气的热风炉系统结构示意图。Fig. 1 is a schematic structural view of the hot blast stove system for heating blue charcoal gas of the present invention.
图2是本发明加热兰炭煤气的热风炉系统流程图。Fig. 2 is a flow chart of the hot blast stove system for heating blue charcoal gas of the present invention.
图中有：热风炉1、兰炭炉2、煤气净化装置3、用户4、煤气加压装置5、烟气与煤气混合装置6、热煤气管道7、烟气管道8、烟囱9、热煤气阀10、空气燃烧阀11、氮气切断阀12、煤气燃烧阀13、混煤气阀14、事故放散阀15、烟气旁通阀16、烟道阀17、冷煤气阀18、冷煤气旁通阀19、氮气管道20、助燃空气管道21、混合气体管道22、氮气供应装置23、冷煤气管道24、助燃空气供应装置25、荒煤气管道26、净煤气管道27、氧含量检测装置28、煤气热值检测装置29、临时兰炭煤气供应装置30、温度检测装置31、煤气调节阀32、空气调节阀33、冷煤气调节阀34、临时煤气管道35、事故放散管36。In the figure there are: hot blast furnace 1, blue charcoal furnace 2, gas purification device 3, user 4, gas pressurization device 5, flue gas and gas mixing device 6, hot gas pipeline 7, flue gas pipeline 8, chimney 9, hot gas Valve 10, air combustion valve 11, nitrogen cut-off valve 12, gas combustion valve 13, mixed gas valve 14, accident relief valve 15, flue gas bypass valve 16, flue valve 17, cold gas valve 18, cold gas bypass valve 19. Nitrogen pipeline 20, combustion air pipeline 21, mixed gas pipeline 22, nitrogen supply device 23, cold gas pipeline 24, combustion air supply device 25, raw gas pipeline 26, clean gas pipeline 27, oxygen content detection device 28, gas heating Value detection device 29, temporary semi-coal gas supply device 30, temperature detection device 31, gas control valve 32, air control valve 33, cold gas control valve 34, temporary gas pipeline 35, accident release pipe 36.
具体实施方式：Detailed ways:
下面结合附图对本发明进行详细的描述。参见图1及图2所示，本系统的工作过程主要为：The present invention will be described in detail below in conjunction with the accompanying drawings. Referring to Figure 1 and Figure 2, the working process of this system is mainly as follows:
刚开始生产时，由临时兰炭煤气供应装置30提供净化后的兰炭煤气，通过临时煤气管道35进入烟气与煤气混合装置6，第一次不用混合烟气，因为临时兰炭煤气热值符合热风炉燃烧条件。然后通过混合气体管道22引至热风炉1(正在烧)的燃烧器，在混合气体管道22上设有氧含量检测装置28和煤气热值检测装置29。在混合气体管道22的三条支管上均设有煤气调节阀32和煤气燃烧阀13。At the beginning of production, the purified semi-coke gas is provided by the temporary semi-coke gas supply device 30, and enters the flue gas and coal gas mixing device 6 through the temporary gas pipeline 35. It is not necessary to mix the flue gas for the first time, because the calorific value of the temporary semi-coke gas Conforms to the combustion conditions of the hot blast stove. Lead to the burner of hot blast stove 1 (being burning) by mixed gas pipeline 22 then, on mixed gas pipeline 22, be provided with oxygen content detecting device 28 and coal gas calorific value detecting device 29. The three branch pipes of the mixed gas pipeline 22 are all provided with a gas regulating valve 32 and a gas combustion valve 13 .
助燃空气供应装置25提供的助燃空气通过助燃空气管道21引至热风炉1(正在烧)的燃烧器。在助燃空气管道21的三条支管上均设有空气调节阀33和空气燃烧阀11。The combustion-supporting air provided by the combustion-supporting air supply device 25 is led to the burner of the hot blast stove 1 (being burned) through the combustion-supporting air duct 21 . The three branch pipes of the combustion-supporting air pipeline 21 are all provided with an air regulating valve 33 and an air combustion valve 11 .
用煤气调节阀32可以调节通入热风炉1的烟气与兰炭煤气的混合气体量，同样用空气调节阀33可以调节通入热风炉1燃烧器的空气量，热风炉1(正在烧)烟气与兰炭煤气的混合气体和空气按一定比例混合进入热风炉1(正在烧)的燃烧器，热风炉1(正在烧)的燃烧器点火燃烧。燃烧后的热烟气通过热风炉1(正在烧)内蓄热体，将热量传递给蓄热体后通过烟气管道8及烟囱9排出。Can regulate the flue gas that passes into hot blast stove 1 with the mixed gas amount of blue charcoal gas with gas regulating valve 32, can regulate the air quantity that passes into hot blast stove 1 burner equally with air regulating valve 33, and hot blast stove 1 (burning) The mixed gas and air of flue gas and semi-coal gas are mixed in a certain proportion and enter the burner of hot blast stove 1 (being burned), and the burner of hot blast stove 1 (being burned) is ignited and burned. The hot flue gas after combustion passes through the regenerator in the hot blast stove 1 (burning), and is discharged through the flue gas pipe 8 and the chimney 9 after the heat is transferred to the regenerator.
烟气管道8的三条支管道上安装有烟道阀17和协助烟道阀17开闭的烟气旁通阀16。A flue valve 17 and a flue gas bypass valve 16 that assists the opening and closing of the flue valve 17 are installed on the three branch pipes of the flue gas pipe 8 .
由临时兰炭煤气供应装置30提供另一部分净化后的兰炭煤气，通过临时煤气管道35进入煤气加压装置5，按操作要求加压后的冷兰炭煤气通过冷煤气管道24引入热风炉1(已烧好)下部。Another part of the purified semi-coke gas is provided by the temporary semi-coke gas supply device 30, and enters the gas pressurization device 5 through the temporary gas pipeline 35, and the cold semi-coke gas pressurized according to the operation requirements is introduced into the hot blast stove 1 through the cold gas pipeline 24 (Already burnt) the lower part.
冷兰炭煤气从热风炉1(已烧好)下部蓄热体进入从从热风炉1(已烧好)上部蓄热体出去，冷兰炭煤气被热的蓄热体加热，热兰炭煤气通过热煤气管道7被送至兰炭炉2。The cold blue charcoal gas enters from the lower regenerator of the hot blast stove 1 (burned) and exits from the upper regenerator of the hot blast stove 1 (burned), the cold blue charcoal gas is heated by the hot regenerator, and the hot blue charcoal gas It is sent to the blue charcoal furnace 2 through the hot gas pipeline 7.
冷煤气管道24有四条支管，三条连接热风炉1的支管上均安装有冷煤气阀18和协助冷煤气阀18开闭的冷煤气旁通阀19，一条连接热煤气管道7的管道上安装有混煤气阀14和冷煤气调节阀34，冷煤气管道24上安装氧含量检测装置28。The cold gas pipeline 24 has four branch pipes, and three branch pipes connected to the hot blast stove 1 are equipped with a cold gas valve 18 and a cold gas bypass valve 19 to assist the opening and closing of the cold gas valve 18, and a pipeline connected to the hot gas pipeline 7 is equipped with a Mix gas valve 14 and cold gas regulating valve 34, oxygen content detection device 28 is installed on the cold gas pipeline 24.
热煤气管道7的连接热风炉1的三条支管上均安装有热煤气阀10，在热煤气管道7上还连接一根事故放散管36，事故放散阀15安装在此根管道上，热煤气管道7上还安装有温度检测装置31。Hot coal gas valve 10 is all installed on the three branch pipes that connect hot blast stove 1 of hot gas pipeline 7, also connects an accident release pipe 36 on hot gas pipeline 7, and accident release valve 15 is installed on this root pipeline, and hot gas pipeline 7 is also equipped with a temperature detection device 31.
为保证送入兰炭炉2的热兰炭煤气温度稳定以满足兰炭生产需要，可通过调节冷煤气调节阀34来实现。To ensure that the temperature of the hot semi-coke gas that is sent into the semi-coke furnace 2 is stable to meet the needs of semi-coke production, it can be realized by adjusting the cold gas regulating valve 34.
热兰炭煤气进入兰炭炉2，兰炭炉内的煤被干馏，兰炭炉产生大量的荒兰炭煤气通过荒煤气管道26进入煤气净化装置3，净化后的兰炭煤气通过净煤气管道27一部分被送到用户4，一部分被送到烟气与煤气混合装置6，与热风炉1(正在烧)烟气混合后的气体供热风炉1(正在烧)燃烧使用，另一部分被送到煤气加压装置5，加压后被热风炉1(已烧好)加热。The hot blue charcoal gas enters the blue charcoal furnace 2, the coal in the blue charcoal furnace is dry-distilled, and the blue charcoal furnace produces a large amount of barren charcoal gas and enters the gas purification device 3 through the barren gas pipeline 26, and the purified semicoke gas passes through the clean gas pipeline 27 A part is sent to the user 4, a part is sent to the flue gas and gas mixing device 6, and the gas mixed with the flue gas of the hot blast stove 1 (burning) is used for burning by the hot blast stove 1 (burning), and the other part is sent to To the gas pressurization device 5, it is heated by the hot blast stove 1 (burned) after the pressurization.
当兰炭炉2正式生产时，停止临时兰炭煤气供应装置30及临时煤气管道35的使用。When blue charcoal stove 2 formally produced, stop the use of temporary blue charcoal gas supply device 30 and temporary gas pipeline 35.
氮气供应装置23通过氮气管道20与助燃空气管道21的三条支管连接，在热风炉1换炉时打开氮气切断阀12，将热风炉1内空气由烟囱排出。Nitrogen gas supply device 23 is connected with three branch pipes of combustion-supporting air pipeline 21 by nitrogen pipeline 20, opens nitrogen cut-off valve 12 when hot blast stove 1 changes stove, air in hot blast stove 1 is discharged by chimney.
热风炉1(正在烧)燃烧兰炭煤气产生的烟气一部分通过烟气管道8被输送到烟囱9排出，另一部分通过烟气管道8被输送至烟气与兰炭煤气混合装置6，烟气和兰炭煤气混合后被送至热风炉1(正在烧)燃烧器参与燃烧。A part of the flue gas produced by the hot blast stove 1 (burning) burning semi-coke gas is transported to the chimney 9 through the flue gas pipe 8 to be discharged, and the other part is transported to the flue gas and semi-coal gas mixing device 6 through the flue gas pipe 8, and the flue gas After being mixed with semi-coal gas, it is sent to the hot blast stove 1 (burning) burner to participate in combustion.
热风炉1工作制度按热风炉1数量及操作指定。本文以共有三座热风炉1的情况为例进行简述。The hot blast stove 1 working system is specified according to the hot blast stove 1 quantity and operation. This article briefly describes the situation where there are three hot blast stoves 1 as an example.
三座热风炉1分别编号为A、B、C。A号热风炉1和B号热风炉1燃烧烟气与兰炭煤气的混合气体将其炉内蓄热体加热，当A号热风炉1的蓄热体被加热到指定温度时，将A号热风炉1相关阀门切换，停止A号热风炉1的燃烧，往A号热风炉1送入冷兰炭煤气，被A号热风炉1加热后的兰炭煤气被送入兰炭炉2，C号热风炉1开始点火燃烧，等B号热风炉1的蓄热体被加热到指定温度时，将B号热风炉1相关阀门切换，停止B号热风炉1的燃烧，往B号热风炉1送入冷兰炭煤气，被B号热风炉1加热后的兰炭煤气被送入兰炭炉2，再将A号热风炉1相关阀门切换，停止A号热风炉1加热冷兰炭煤气，开始A号热风炉1的燃烧。以此类推，保证连续送热兰炭煤气到兰炭炉2供其生产。Three hot blast stoves 1 are numbered A, B, C respectively. The mixture of combustion flue gas and semi-coal gas of No. A hot blast stove 1 and No. B hot blast stove 1 heats the regenerator in the furnace. When the regenerator of No. A hot blast stove 1 is heated to the specified temperature, the A The related valve of hot blast stove 1 is switched, the combustion of No. A hot blast stove 1 is stopped, and cold semi-coke gas is sent to No. A hot blast stove 1. No. hot blast stove 1 starts to ignite and burn. When the regenerator of No. B hot blast stove 1 is heated to the specified temperature, switch the relevant valve of No. B hot blast stove 1, stop the combustion of No. B hot blast stove 1, Send in the cold semi-coke gas, the semi-coke gas heated by No. B hot blast stove 1 is sent to the semi-coke stove 2, and then switch the relevant valve of No. A hot blast stove 1, stop No. A hot blast stove 1 from heating the cold semi-coke gas, Start the combustion of No. A hot blast stove 1. By analogy, ensure that the hot blue charcoal gas is continuously delivered to the blue charcoal furnace 2 for its production.
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