CN116678222A - Furnace gas purifying method in calcium carbide production process - Google Patents
Furnace gas purifying method in calcium carbide production process Download PDFInfo
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- CN116678222A CN116678222A CN202210159303.2A CN202210159303A CN116678222A CN 116678222 A CN116678222 A CN 116678222A CN 202210159303 A CN202210159303 A CN 202210159303A CN 116678222 A CN116678222 A CN 116678222A
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- 238000000034 method Methods 0.000 title claims abstract description 96
- 239000005997 Calcium carbide Substances 0.000 title claims abstract description 85
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 title claims abstract description 85
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 77
- 239000007789 gas Substances 0.000 claims abstract description 162
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 90
- 238000000746 purification Methods 0.000 claims abstract description 47
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 45
- 238000002485 combustion reaction Methods 0.000 claims abstract description 34
- 238000010926 purge Methods 0.000 claims abstract description 31
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910002091 carbon monoxide Inorganic materials 0.000 claims abstract description 19
- 238000012423 maintenance Methods 0.000 claims abstract description 14
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 238000012544 monitoring process Methods 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims description 30
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 19
- 239000001301 oxygen Substances 0.000 claims description 19
- 229910052760 oxygen Inorganic materials 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 7
- 230000007613 environmental effect Effects 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 7
- 238000009530 blood pressure measurement Methods 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- 239000003546 flue gas Substances 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 238000010790 dilution Methods 0.000 claims description 5
- 239000012895 dilution Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 229920006395 saturated elastomer Polymers 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000000740 bleeding effect Effects 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 238000011897 real-time detection Methods 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 230000008033 biological extinction Effects 0.000 claims description 2
- 239000000446 fuel Substances 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
- C01B32/914—Carbides of single elements
- C01B32/942—Calcium carbide
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q25/00—Extinguishing-devices, e.g. for blowing-out or snuffing candle flames
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q3/00—Igniters using electrically-produced sparks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Combustion & Propulsion (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Incineration Of Waste (AREA)
Abstract
The invention relates to a furnace gas purifying method in a calcium carbide production process, which comprises the steps of controlling a remote control valve to switch and remotely operate and ignite a system after calcium carbide furnace purification, leading the furnace gas of high-concentration carbon monoxide of an outlet header pipe to a purifying and discharging pipeline port for ignition by using a combustion accompanying pipeline, assisting combustion accompanying and cutting the furnace gas discharged by a purifying and discharging pipeline after gas cutting, and comprising a furnace gas ignition unit, a furnace gas fire extinguishing unit and a system monitoring unit, wherein main components such as a windshield, a nitrogen purging, an annular combustion accompanying pipe and a nozzle are arranged in association with actual working conditions, and the nitrogen purging is safe and reliable in pressure maintaining and isolated maintenance; alarming the fault of the ignition system; detecting the flame state of a burner; reduces the labor intensity of workers, reduces the accident rate and realizes the automatic control of key procedures. The invention can be widely applied to the intelligent control of different furnace gas purifying methods in the calcium carbide production process.
Description
Technical Field
The invention belongs to the technical field of calcium carbide production processes, and particularly relates to a furnace gas purifying method in a calcium carbide production process.
Background
The furnace gas generated in the production process of the calcium carbide furnace contains high-concentration carbon monoxide gas, the furnace gas is sent to a furnace gas conveying section after passing through a purification system during normal production, because the calcium carbide furnace is a discontinuous operation process, the calcium carbide furnace cannot be integrated into the system due to the fact that the oxygen content in the furnace gas is high when power is just transmitted, the oxygen content in the furnace gas is continuously reduced in the replacement process of a hearth and the purification system, the carbon monoxide content is continuously increased, when the oxygen content is more than 0.8%, the furnace gas cannot be used by a downstream unit after being integrated into the system, and in the process that the oxygen content in the furnace gas is replaced to be below 0.8%, the carbon monoxide concentration is increased from 0% to about 30%, the process is unequal for 5-15 minutes, and the furnace gas is completely discharged out of the atmosphere. The problems existing at present are:
1. the risk of CO poisoning of personnel exists, and the atmospheric quality is polluted;
2. in the process, the change range of the furnace gas components in the furnace gas emptying pipe is large and unstable, the mass content of carbon monoxide is 0-30%, the mass content of oxygen is 18-0.8%, the collection and the treatment cannot be carried out, and the direct ignition cannot be carried out;
3. the flame is unstable, is easily affected by wind direction, wind power, environmental temperature and other aspects seriously, and has a plurality of potential safety hazards;
4. when the concentration of CO in the power transmission furnace gas of the calcium carbide furnace is less than 10%, the flame is too small;
5. the pressure gauge of the burning-accompanying pipeline is arranged at the rearmost ends of the two pneumatic valves, so that the pressure measurement is not accurate enough;
6. the fire-tracing pipeline can not be reliably isolated from the furnace gas main pipe during overhauling, and potential safety hazards exist.
Disclosure of Invention
The invention aims to provide a furnace gas purifying method in a calcium carbide production process, which is a remote control method for system operation after calcium carbide furnace purification, is simple and convenient to operate, has high degree of automation, can be regulated and controlled in real time, is safe and reliable, and is really suitable for the furnace gas purifying method in the calcium carbide production process.
The technical scheme of the invention relates to a furnace gas purifying method in a calcium carbide production process, which comprises a furnace gas ignition unit, a furnace gas fire extinguishing unit and a system monitoring unit:
the furnace gas ignition unit is used for leading main furnace gas with saturated furnace gas pressure of 3-5 KPa and carbon monoxide concentration content of about 70% in the production of the calcium carbide furnace to a furnace gas emptying pipe orifice of the calcium carbide furnace, remotely controlling a high-energy igniter to ignite after the calcium carbide furnace is powered on, forming stable flame after the flame is ignited, stopping the ignition action of the igniter, and completely burning carbon monoxide in the unqualified furnace gas after the calcium carbide furnace is powered on;
the ignition process steps are as follows: opening a manual stop valve, opening a pneumatic explosion-proof ball valve B, opening a pneumatic explosion-proof ball valve A, checking pipeline pressure, igniting a high-energy igniter A, igniting a torch lamp holder, and opening a direct discharge relief valve;
when the oxygen content in the furnace gas is replaced to be below 0.8% after the ignition process step, the furnace gas valve of the main combustion pipe is closed remotely, and after flame is extinguished, qualified furnace gas is merged into the main furnace gas pipe;
the fire extinguishing process comprises the following steps: closing a pneumatic explosion-proof ball valve B, checking pipeline pressure, extinguishing a torch lamp cap, closing a pneumatic explosion-proof ball valve A, and closing a manual stop valve;
the system monitoring unit comprises the furnace gas ignition unit, a furnace gas fire extinguishing unit temperature remote transmission instrument and a pressure remote transmission instrument which are remotely transmitted to a central control operation station of the DCS automatic control system, wherein the flame temperature is 200-700 ℃ and the ignition condition is judged according to the temperature, and the temperature is greatly influenced by the ambient temperature, the wind direction and the wind power; the step is penetrated in the real-time detection of the ignition process step and the fire extinguishing process step;
in the ignition process step and the fire extinguishing process step, the upper valve of the on-site fire tracing hand valve in the fire tracing system is fully opened, and the bottom valve is in a normally opened state;
after the hand valve in the burning accompanying system is confirmed to be opened again, the central control power distribution worker can be informed to operate to execute the ignition process step, the pneumatic explosion-proof ball valve B and the pneumatic explosion-proof ball valve A are opened firstly, and the ignition is started when the pressure of the burning accompanying pipe is observed;
in the steps, the central control observes whether the temperature of the igniter changes or not, judges the ignition condition according to the temperature change, and confirms that the flame is ignited on site at the same time, and the calcium carbide furnace normally transmits electricity;
in the steps, the calcium carbide furnace is replaced to O after power transmission 2 The method comprises the steps that (1) a power distribution worker operates and closes a pneumatic explosion-proof ball valve B and a pneumatic explosion-proof ball valve A of a combustion accompanying pipeline, after flame extinction is confirmed on site, a working section on-site closes a valve at the upper part of a hand valve of the combustion accompanying pipeline, after a gas merging condition is met, a purification station worker is informed to open a gas supply valve of a system, and after the gas merging is conducted, the system is connected;
the device for realizing the furnace gas purification method in the calcium carbide production process comprises a wind shield which is one of main components and is mainly used for blocking main pipe combustion-accompanying furnace gas from being diluted rapidly caused by too fast air flow, so that the ignition reliability is improved; the content and the temperature of carbon monoxide in the diffused flue gas do not influence whether the flame can be ignited or not, but the higher the content of carbon monoxide in the diffused flue gas is, the larger the flame is;
the device for realizing the furnace gas purification method in the calcium carbide production process comprises one of main components, namely nitrogen purging and adding to a CO main pipe, wherein the main component mainly plays roles of nitrogen purging and nitrogen pressure maintaining, and simultaneously a plugging blind plate is extracted at the rear end of an added hand valve to ensure that the device is safer in isolation from a furnace gas main pipe when a burning pipeline is overhauled;
the device for realizing the furnace gas purification method in the calcium carbide production process comprises the following steps that one of main components is a ring-shaped pipe, the number of the following combustion nozzles is increased by 20-30, the angle between every two of the main components is 15-25 degrees, after part of the following combustion nozzles are extinguished, the surrounding following combustion nozzles can ignite to form ring fire, the following combustion effect is improved, and full combustion is realized;
the determination of the burning accompanying nozzle requires that the short-circuit size of the burning accompanying nozzle, the aperture of a joint of the burning accompanying nozzle, the diameter of a spray hole and the size of the oxygen inlet amount are determined according to the pressure, the temperature, the content of furnace gas and the like in actual production; the flame is unstable, is influenced by wind direction, wind power, environmental temperature and the like, and is also used for solving the problem that the flame is too small when the concentration of CO in the power transmission furnace gas of the calcium carbide furnace is less than 10%;
the device for realizing the furnace gas purification method in the calcium carbide production process comprises a pressure remote transmission instrument which is one of main components and is arranged between the pneumatic explosion-proof ball valve A and the pneumatic explosion-proof ball valve B, so that the problem of internal leakage of the pneumatic valves can be measured, and the pressure measurement is more accurate;
the device for realizing the furnace gas purification method in the calcium carbide production process comprises a main part, wherein a manual stop valve is added, a nitrogen purge is additionally arranged, all the manual valves are closed during maintenance, nitrogen purge and nitrogen pressure maintaining are ensured, and a plugging blind plate is extracted at the rear end of the additionally arranged manual valve to ensure that a combustion-accompanying pipeline is isolated from a furnace gas main pipe during maintenance.
According to the furnace gas purifying method in the calcium carbide production process, the bleeding flue torch system can automatically ignite, can locally ignite on site, and can manually ignite in a remote operation manner in a control room; alarming the fault of the ignition system; burner flame condition detection.
The pressure of the instrument wind is 0.55-0.85 MPa, and nitrogen in nitrogen purging is adopted for torch speed sealing; the blow-down torch area is 15m multiplied by 15m, and the ignition fuel gas pressure is 35KPa, low heating value 34.68MJ/m 3 。
Preferably, the number of igniters is 2; the number of the high-energy igniters A and B is 2; the number of thermocouples of the temperature remote transmission instrument is 2.
The production device for realizing the furnace gas purification method in the calcium carbide production process comprises a discharging flue, a torch lamp holder, a direct discharging valve, a windshield, a temperature remote instrument, a burning head, an igniter, a fixed rib plate, a burning pipeline, a flange, a flame arrester, a pressure remote instrument, an explosion-proof control box, a high-energy igniter A, a high-energy igniter B, a pneumatic explosion-proof ball valve A, a pneumatic explosion-proof ball valve B, a manual stop valve, a nitrogen purge, a main CO pipe, a PLC control box and a DCS automatic control system which are sequentially connected from bottom to top and from left to right; a torch lamp cap is arranged at the upper end of the diffusing smoke pipe; the upper end of the head of the torch lamp is provided with a straight discharge relief valve, a wind shield, an igniter and a burning head; the burning head is connected with a burning pipeline, and a pressure remote transmission instrument, a pneumatic explosion-proof ball valve A, a pneumatic explosion-proof ball valve B, a manual stop valve and nitrogen purging are arranged on the CO main pipe.
The two igniter meters are respectively connected with the high-energy igniter A and the high-energy igniter B.
The high-energy igniter A and the high-energy igniter B are connected with the PLC control box and are connected with the DCS automatic control system in parallel to display and operate.
The fixed rib plate is used for fixing the burning accompanying pipeline, the torch lamp cap, the direct discharge relief valve and the wind shield.
The flame arrester is arranged on the main pipe from CO. Mainly applied to the safety of the whole system.
The wind shield is arranged on the periphery of the burning accompanying head, is provided with a through groove of 20 multiplied by 10 cm, is obliquely upwards by 15-25 degrees, and is used for ventilation, combustion oxygen supply and blocking rapid dilution of main combustion accompanying furnace gas caused by too fast air flow, so that the ignition reliability is improved.
The burning head consists of a burning ring pipe, a ring pipe connecting hole, a burning nozzle and a cleaning hole.
And the burning-accompanying ring pipe is provided with a ring pipe joint hole which is connected with the burning-accompanying nozzle, and the ring pipe joint hole is welded or connected with the burning-accompanying nozzle in a matching way.
The cleaning hole is arranged on the burning-accompanying ring pipe, the sealing plug is arranged at the 4-position, and residues in the burning-accompanying ring pipe can be cleaned by unscrewing during maintenance.
The burning accompanying nozzle is connected with the burning accompanying nozzle joint through a wire hole in a matching mode, through holes are formed in the periphery of the burning accompanying nozzle short-circuit cylinder body, and the burning accompanying nozzle joint is continuously ventilated for burning oxygen.
The combustion accompanying nozzle joint consists of a spray hole, a joint shell and a joint seat, wherein a through hole with the diameter of 3mm is formed in the joint shell, and the lower part of the joint shell is a trapezoid through hole; the connector base is connected with the connector shell in a threaded hole matching way. The nozzle is determined, and the pressure, the temperature, the furnace gas content and the like are needed to determine the sizes of the short circuit of the burning nozzle, the aperture of the joint of the burning accompanying nozzle, the diameter of the spray hole and the oxygen inlet amount in actual production; the flame stabilizing device solves the problem that flame is unstable and influenced by wind direction, wind power, environmental temperature and the like, and also solves the problem that the flame is too small when the concentration of CO in the power transmission furnace gas of the calcium carbide furnace is less than 10%.
According to the invention, the aim of safe purification of the furnace gas can be achieved by arranging the furnace gas purification method in the calcium carbide production process, a DN50 burning accompanying pipeline is additionally arranged on a main pipe of a calcium carbide furnace purification leading-to-back system and is connected to a purification blow-down pipeline port, a remote control valve, a flame arrester and an igniter are arranged on the pipeline, the furnace gas of high concentration carbon monoxide of an outlet main pipe is led to the purification blow-down pipeline port for ignition by using the burning accompanying pipeline through remote control valve switch and remote operation ignition, and the furnace gas discharged by a purification blow-down pipeline after burning accompanying and cutting gas is assisted. The main component wind shield is used for blocking main pipe burning furnace gas rapid dilution caused by too fast air flow, nitrogen purging is added to the CO main pipe, the nitrogen purging and nitrogen pressure maintaining effects are mainly achieved, and meanwhile, a plugging blind plate at the rear end of an additionally arranged hand valve is used for guaranteeing that the main pipe burning furnace gas is isolated from the main pipe burning furnace gas during overhauling; the burning accompanying pipes are annular pipes, the number of the nozzles is increased by 20-30, the angle between every two nozzles is 15-25 degrees, after part of the nozzles are extinguished, the surrounding nozzles can ignite to form annular fire, the burning accompanying effect is improved, and full burning is realized; the nozzle is determined according to production practice, so that the nozzle is more accurate and safer; the pressure remote transmission instrument is arranged between the pneumatic explosion-proof ball valve A and the pneumatic explosion-proof ball valve B, so that whether the pneumatic valves have internal leakage or not can be measured, and the pressure measurement is more accurate; a hand valve is added behind the manual stop valve, nitrogen purging is additionally arranged, all the hand valves are closed during maintenance, nitrogen purging and nitrogen pressure maintaining are ensured, and a plugging blind plate at the rear end of the additionally arranged hand valve ensures that a burning-accompanying pipeline is isolated from a furnace gas main pipe during maintenance more safely; the method can automatically ignite, can also locally ignite on site, and the control room remotely operates and manually ignites; alarming the fault of the ignition system; detecting the flame state of a burner; the method has the advantages of safety, rapidness, reduced labor intensity, reduced accident rate, realization of automatic control of key procedures, improvement of process parameter detection precision and control precision, and the like. The invention can be widely applied to the intelligent control of different furnace gas purifying methods in the calcium carbide production process.
Drawings
Fig. 1 is a schematic process flow diagram of a furnace gas purifying method in a calcium carbide production process.
In fig. 1, 1 is a fume exhaust pipe; 2 is a torch lamp holder; 3, a straight discharge diffusion valve; 4 is a windshield; 5 is a temperature remote transmission instrument; 6 is a burning head; 7 is an igniter; 8 is a fixed rib plate; 9 is a burning pipeline; 10 is a flange; 11 is a flame arrester; 12 is a pressure remote transmission instrument; 13 is an explosion-proof control box; 14 is a high-energy igniter A;15 is a high-energy igniter B;16 is a pneumatic explosion-proof ball valve A;17 is a pneumatic explosion-proof ball valve B;18 is a manual shut-off valve; 19 is nitrogen purge; 20 from the CO main; 21 is a PLC control box; and 22 is a DCS automatic control system.
Fig. 2 is a schematic diagram of a burn-up probe according to the present invention.
In fig. 2, 61 is a burn-up loop; 62 is a ring pipe connecting hole; 63 is a companion firing nozzle; 64 is a cleaning hole;
FIG. 3 is a cross-sectional view of the trace head A-A of the present invention.
FIG. 4 is a schematic view of a combustion-partner nozzle of the present invention.
In fig. 4, 631 is a fire-tracing nozzle short; 632 is a burn-up nozzle joint.
FIG. 5 is a schematic view of a flame-retardant nozzle joint according to the present invention.
In fig. 5, 6321 is an injection hole; 6322 is a joint housing; 6322 is a joint base.
Detailed Description
For a more detailed description of the invention, reference is made to the accompanying drawings, in which:
in fig. 1, the technical scheme of the invention relates to a furnace gas purifying method in a calcium carbide production process, which comprises a furnace gas ignition unit, a furnace gas fire extinguishing unit and a system monitoring unit:
the furnace gas ignition unit is used for leading main furnace gas with saturated furnace gas pressure of 3-5 KPa and carbon monoxide concentration content of about 70% in the production of the calcium carbide furnace to a furnace gas emptying pipe orifice of the calcium carbide furnace, remotely controlling a high-energy igniter to ignite after the calcium carbide furnace is powered on, forming stable flame after the flame is ignited, stopping the ignition action of the igniter, and completely burning carbon monoxide in the unqualified furnace gas after the calcium carbide furnace is powered on;
the ignition process steps are as follows: opening a manual stop valve 18, opening a pneumatic explosion-proof ball valve B17, opening a pneumatic explosion-proof ball valve A16, checking pipeline pressure, igniting a high-energy igniter A14, igniting a torch lamp holder 2, and opening a direct discharge relief valve 3;
when the oxygen content in the furnace gas is replaced to be below 0.8% after the ignition process step, the furnace gas valve of the main combustion pipe is closed remotely, and after flame is extinguished, qualified furnace gas is merged into the main furnace gas pipe;
the fire extinguishing process comprises the following steps: closing the pneumatic explosion-proof ball valve B17, checking the pipeline pressure, extinguishing the torch lamp cap 2, closing the pneumatic explosion-proof ball valve A16, and closing the manual stop valve 18;
the system monitoring unit comprises the furnace gas ignition unit, a furnace gas fire extinguishing unit temperature remote transmission instrument 5 and a pressure remote transmission instrument 12 which are remotely transmitted to a central control operation station of the DCS automatic control system 22, flame temperature is not equal to 200-700 ℃, ignition condition is judged according to temperature, and deviation of the temperature influenced by environmental temperature, wind direction and wind force is large; the step is penetrated in the real-time detection of the ignition process step and the fire extinguishing process step;
in the ignition process step and the fire extinguishing process step, the upper valve of the on-site fire tracing hand valve in the fire tracing system is fully opened, and the bottom valve is in a normally opened state;
after the hand valve in the burning accompanying system is confirmed to be opened again, the central control power distribution worker can be informed to operate and execute the ignition process step in the ignition process step, the pneumatic explosion-proof ball valve B17 and the pneumatic explosion-proof ball valve A16 are opened firstly, and meanwhile, ignition is started when the pressure of the burning accompanying pipe is observed;
in the steps, the central control observes whether the temperature of the igniter changes or not, judges the ignition condition according to the temperature change, and confirms that the flame is ignited on site at the same time, and the calcium carbide furnace normally transmits electricity;
in the steps, the calcium carbide furnace is replaced to O after power transmission 2 The operation of a power distributor is less than 0.8%, the pneumatic explosion-proof ball valve B17 and the pneumatic explosion-proof ball valve A16 of the fire tracing pipeline are closed, after the flame is confirmed to be extinguished on site, the upper valve of the hand valve of the fire tracing pipeline is closed on site in a working section, after the gas merging condition is met, a purifying station worker is informed to open a gas supply valve of a rear system, and the gas is merged after the gas merging is conducted;
the device for realizing the furnace gas purification method in the calcium carbide production process comprises a wind shield 4 which is one of main components and is mainly used for preventing main pipe burning furnace gas from being diluted rapidly caused by too fast air flow, so that the ignition reliability is improved; the content and the temperature of carbon monoxide in the diffused flue gas 1 do not influence whether flame can be ignited or not, but the higher the content of carbon monoxide in the diffused flue gas is, the larger the flame is;
the device for realizing the furnace gas purification method in the calcium carbide production process comprises a main part, namely a nitrogen purge 19 which is added to a CO main pipe 20 and mainly plays roles in nitrogen purging and nitrogen pressure maintaining, and meanwhile, a plugging blind plate at the rear end of an additionally arranged hand valve ensures that the device is isolated from a furnace gas main pipe during overhauling of a burning-accompanying pipeline;
the device for realizing the furnace gas purification method in the calcium carbide production process comprises the following steps that one of main components, namely a combustion-accompanying ring pipe 61, is an annular pipe, and meanwhile, the number of combustion-accompanying nozzles 63 is increased by 20-30, the angle between every two combustion-accompanying nozzles is 15-25 degrees, after part of combustion-accompanying nozzles 63 are extinguished, surrounding combustion-accompanying nozzles 63 can ignite to form ring fire, the combustion-accompanying effect is improved, and full combustion is realized;
the size of the combustion nozzle short 631, the aperture of the combustion nozzle joint 632, the diameter of the nozzle hole 6321, and the size of the oxygen intake amount need to be determined by the pressure, temperature, and furnace gas content in actual production; the flame is unstable, is influenced by wind direction, wind power, environmental temperature and the like, and is also used for solving the problem that the flame is too small when the concentration of CO in the power transmission furnace gas of the calcium carbide furnace is less than 10%;
the device for realizing the furnace gas purification method in the calcium carbide production process comprises a pressure remote transmission instrument 12 which is one of main components and is arranged between two pneumatic valves of a pneumatic explosion-proof ball valve A16 and a pneumatic explosion-proof ball valve B17, so that the problem of internal leakage of the pneumatic valves can be measured, and the pressure measurement is more accurate;
the device for realizing the furnace gas purification method in the calcium carbide production process comprises a main part, wherein a manual stop valve 18 is added with a manual valve, a nitrogen purging 19 is additionally arranged, all the manual valves are closed during maintenance, nitrogen purging and nitrogen pressure maintaining are ensured, and a plugging blind plate at the rear end of the additionally arranged manual valve ensures that a combustion-accompanying pipeline is isolated from a furnace gas main pipe during maintenance more safely.
According to the furnace gas purifying method in the calcium carbide production process, the bleeding flue torch system can automatically ignite, can locally ignite on site, and can manually ignite in a remote operation manner in a control room; alarming the fault of the ignition system; burner flame condition detection.
The pressure of the instrument wind is 0.55-0.85 MPa, and nitrogen in 18 is purged by nitrogen at the speed of the torch in a sealing way; the emptying torch area is 15m multiplied by 15m, the gas pressure of the fuel for ignition is 3-5 KPa, and the low heat value is 34.68MJ/m 3 。
Preferably, the number of igniters 7 is 2; the number of the high-energy igniters A14 and B15 is 2; the number of thermocouples of the temperature remote transmitting instrument 5 is 2.
The production device for realizing the furnace gas purification method in the calcium carbide production process comprises a discharging flue pipe 1, a torch lamp cap 2, a direct discharging valve 3, a windshield 4, a temperature remote transmitting instrument 5, a burning head 6, an igniter 7, a fixed rib plate 8, a burning pipeline 9, a flange 10, a flame arrester 11, a pressure remote transmitting instrument 12, an explosion-proof control box 13, a high-energy igniter A14, a high-energy igniter B15, a pneumatic explosion-proof ball valve A16, a pneumatic explosion-proof ball valve B17, a manual stop valve 18, a nitrogen purging 19, a main CO pipe 20, a PLC control box 21 and a DCS automatic control system 22 which are sequentially connected from left to right; a torch lamp holder 2 is arranged at the upper end of the diffusing smoke pipe 1; the upper end of the head 2 of the torch lamp is provided with a straight discharge relief valve 3, a wind shield 4, an igniter 11 and a burning head 6; the burning head 6 is connected with a burning pipeline 9, and a pressure remote transmission instrument 12, a pneumatic explosion-proof ball valve A16, a pneumatic explosion-proof ball valve B17, a manual stop valve 18 and a nitrogen purge 19 are arranged on the CO main pipe 20.
The two igniters 7 are respectively connected with the high-energy igniter A14 and the high-energy igniter B15.
The high-energy igniter A14 and the high-energy igniter B15 are connected with the PLC control box 21, and are connected with a signal wire in parallel to be displayed and operated on the DCS automatic control system 22.
The fixing rib plates 8 are used for fixing the burning accompanying pipeline 9, the torch lamp holder 2, the direct discharge relief valve 3 and the windshield 4.
The flame arrestor 11 is provided on the main CO pipe 20. Mainly applied to the safety of the whole system.
The wind shield 4 is arranged on the periphery of the burning accompanying head 6, is provided with a through groove of 20 multiplied by 10 cm, is obliquely upwards at 15-25 degrees, and is used for ventilation, combustion oxygen supply and blocking rapid dilution of main combustion accompanying furnace gas caused by too fast air flow, so that the ignition reliability is improved.
The burning head 6 is composed of a burning ring pipe 61, ring pipe connecting holes 62, burning nozzles 63 and cleaning holes 64.
The combustion-supporting ring pipe 61 is provided with a ring pipe joint hole 62 which is connected with a combustion-supporting nozzle 63 and is welded or matched and connected with a wire hole.
The cleaning holes 64 are arranged on the burning-accompanying ring pipe 61, are sealed and sealed, and can be unscrewed to clean residues in the burning-accompanying ring pipe 61 during maintenance.
The burning accompanying nozzle 63 is connected by matching the wire holes of the burning accompanying nozzle short circuit 631 and the burning accompanying nozzle joint 632, and through holes are formed around the barrel of the burning accompanying nozzle short circuit 631 for continuously ventilating the burning accompanying nozzle joint 632 for burning oxygen.
The burning nozzle joint 632 consists of a spray hole 6321, a joint shell 6322 and a joint seat 6323, wherein a through hole with the diameter of 3mm is formed in the joint shell 6322, and the lower part of the joint shell is a trapezoid through hole; the connector mount 6323 is connected to the connector housing 6322 in a threaded bore fit. The nozzle is determined, and the aperture of the ignition nozzle, the diameter of the ignition cylinder and the size of the oxygen inlet amount are determined according to the pressure, the temperature, the furnace gas content and the like in actual production; the flame stabilizing device solves the problem that flame is unstable and influenced by wind direction, wind power, environmental temperature and the like, and also solves the problem that the flame is too small when the concentration of CO in the power transmission furnace gas of the calcium carbide furnace is less than 10%.
According to the invention, the aim of safe purification of the furnace gas can be achieved by arranging the furnace gas purification method in the calcium carbide production process, a DN50 burning accompanying pipeline is additionally arranged on a main pipe of a calcium carbide furnace purification leading-to-back system and is connected to a purification blow-down pipeline port, a remote control valve, a flame arrester and an igniter are arranged on the pipeline, the furnace gas of high concentration carbon monoxide of an outlet main pipe is led to the purification blow-down pipeline port for ignition by using the burning accompanying pipeline through remote control valve switch and remote operation ignition, and the furnace gas discharged by a purification blow-down pipeline after burning accompanying and cutting gas is assisted. The main component windshield 4 is used for blocking main pipe burning furnace gas rapid dilution caused by too fast air flow, the nitrogen purging 19 is additionally arranged on the CO main pipe 20 and mainly plays roles in nitrogen purging and nitrogen pressure maintaining, and meanwhile, a plugging blind plate is extracted at the rear end of an additionally arranged hand valve to ensure safer isolation between the main pipe burning furnace gas and the main pipe burning furnace gas when the main pipe burning furnace pipe is overhauled; the burning accompanying pipes are annular pipes, the number of the nozzles is increased by 20-30, the angle between every two nozzles is 15-25 degrees, after part of the nozzles are extinguished, the surrounding nozzles can ignite to form annular fire, the burning accompanying effect is improved, and full burning is realized; the nozzle is determined according to production practice, so that the nozzle is more accurate and safer; the pressure remote transmission instrument 12 is arranged between the pneumatic explosion-proof ball valve A16 and the pneumatic explosion-proof ball valve B17, so that whether the pneumatic valve has an internal leakage problem or not can be measured, and the pressure measurement is more accurate; a hand valve is added behind the manual stop valve 18, and a nitrogen purging 19 is additionally arranged, so that all hand valves are closed during maintenance, nitrogen purging and nitrogen pressure maintaining are ensured, and a plugging blind plate at the rear end of the additionally arranged hand valve ensures that a burning-accompanying pipeline is isolated from a furnace gas main pipe during maintenance more safely; the method can automatically ignite, can also locally ignite on site, and the control room remotely operates and manually ignites; alarming the fault of the ignition system; detecting the flame state of a burner; the method has the advantages of safety, rapidness, reduced labor intensity, reduced accident rate, realization of automatic control of key procedures, improvement of process parameter detection precision and control precision, and the like. The invention can be widely applied to the intelligent control of different furnace gas purifying methods in the calcium carbide production process.
According to the structural form of the invention, the following group of operation modes are specifically described:
example 1:
introducing the saturated furnace gas of the main pipeline with the CO concentration content of 70% -75% to a blow-down pipe torch for ignition, and treating the low-concentration CO furnace gas from 0% -20% -40% in the power transmission replacement process of the calcium carbide furnace by flame burning, wherein related parameters are as follows:
1. the discharge amount of the discharged air is 0-3000Nm 3 /h (according to fan frequency variation)
2. The pressure of the discharged air is 0 to 3000Pa
3. The temperature of the discharged air is less than or equal to 150 DEG C
4. Total discharge height of 35m
5. The diameter DN of the discharge pipe is 300mm
6. Main component CO (70-75%) of combustion accompanying gas
7. The pressure of the combustion accompanying gas is 3000-5000Pa
8. The implementation size, the aperture is 25mm in diameter, the diameter of the spray hole is 3mm, and the total length of the companion combustion nozzle is 53mm.
Step 1, opening an upper valve of a burning hand valve on site, wherein a bottom valve is in a normally open state;
step 2, after the hand valve is opened, informing a central control power distribution worker to operate and ignite, opening the double valves of the pneumatic explosion-proof ball valve A16 and the pneumatic explosion-proof ball valve B17, and starting ignition when the pressure of the burning accompanying pipe is observed;
step 3, the central control observes whether the temperature of the igniter changes or not, and confirms that the flame is ignited on site at the same time, and the calcium carbide furnace normally transmits electricity;
step 4, after the calcium carbide furnace is powered on, replacing the calcium carbide furnace to O 2 After less than 0.8 percent or CO is more than or equal to 20 percent, the pneumatic explosion-proof ball valve A16 of the burning accompanying pipeline is closed by the operation of a distributorAnd B17, after the flame is extinguished in site, the upper valve of the hand valve of the burning accompanying pipeline is closed in site in the working section, after the gas merging condition is met, a purifying station worker is informed to open the gas supply valve of the rear system, and the gas merging of the rear system is carried out.
Finally, it should be noted that: in the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "horizontal", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
While the invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that the invention is not limited to the preferred embodiments, and modifications and equivalents of some of the features described in the foregoing embodiments may be made. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (15)
1. A furnace gas purifying method in a calcium carbide production process is characterized in that: the purifying method comprises a furnace gas ignition unit, a furnace gas fire extinguishing unit and a system monitoring unit:
the furnace gas ignition unit is used for leading main furnace gas with saturated furnace gas pressure of 3-5 KPa and carbon monoxide concentration content of about 70% in the production of the calcium carbide furnace to a furnace gas emptying pipe orifice of the calcium carbide furnace, remotely controlling a high-energy igniter to ignite after the calcium carbide furnace is powered on, forming stable flame after the flame is ignited, stopping the ignition action of the igniter, and completely burning carbon monoxide in the unqualified furnace gas after the calcium carbide furnace is powered on;
the ignition process steps are as follows: opening a manual stop valve, opening a pneumatic explosion-proof ball valve B, opening a pneumatic explosion-proof ball valve A, checking pipeline pressure, igniting a high-energy igniter A, igniting a torch lamp holder, and opening a direct discharge relief valve;
when the oxygen content in the furnace gas is replaced to be below 0.8% after the ignition process step, the furnace gas valve of the main combustion pipe is closed remotely, and after flame is extinguished, qualified furnace gas is merged into the main furnace gas pipe;
the fire extinguishing process comprises the following steps: closing a pneumatic explosion-proof ball valve B, checking pipeline pressure, extinguishing a torch lamp cap, closing a pneumatic explosion-proof ball valve A, and closing a manual stop valve;
the system monitoring unit comprises the furnace gas ignition unit, a furnace gas fire extinguishing unit temperature remote transmission instrument and a pressure remote transmission instrument which are remotely transmitted to a central control operation station of the DCS automatic control system, wherein the flame temperature is 200-700 ℃ and the ignition condition is judged according to the temperature, and the temperature is greatly influenced by the ambient temperature, the wind direction and the wind power; the step is penetrated in the real-time detection of the ignition process step and the fire extinguishing process step;
in the ignition process step and the fire extinguishing process step, the upper valve of the on-site fire tracing hand valve in the fire tracing system is fully opened, and the bottom valve is in a normally opened state;
after the hand valve in the burning accompanying system is confirmed to be opened again, the central control power distribution worker can be informed to operate to execute the ignition process step, the pneumatic explosion-proof ball valve B and the pneumatic explosion-proof ball valve A are opened firstly, and the ignition is started when the pressure of the burning accompanying pipe is observed;
in the steps, the central control observes whether the temperature of the igniter changes or not, judges the ignition condition according to the temperature change, and confirms that the flame is ignited on site at the same time, and the calcium carbide furnace normally transmits electricity;
in the steps, the calcium carbide furnace is replaced to O after power transmission 2 The method comprises the steps that (1) a power distribution worker operates and closes a pneumatic explosion-proof ball valve B and a pneumatic explosion-proof ball valve A of a combustion accompanying pipeline, after flame extinction is confirmed on site, a working section on-site closes a valve at the upper part of a hand valve of the combustion accompanying pipeline, after a gas merging condition is met, a purification station worker is informed to open a gas supply valve of a system, and after the gas merging is conducted, the system is connected;
the device for realizing the furnace gas purification method in the calcium carbide production process comprises a wind shield which is one of main components and is mainly used for blocking main pipe combustion-accompanying furnace gas from being diluted rapidly caused by too fast air flow, so that the ignition reliability is improved; the content and the temperature of carbon monoxide in the diffused flue gas do not influence whether the flame can be ignited or not, but the higher the content of carbon monoxide in the diffused flue gas is, the larger the flame is;
the device for realizing the furnace gas purification method in the calcium carbide production process comprises one of main components, namely nitrogen purging and adding to a CO main pipe, wherein the main component mainly plays roles of nitrogen purging and nitrogen pressure maintaining, and simultaneously a plugging blind plate is extracted at the rear end of an added hand valve to ensure that the device is safer in isolation from a furnace gas main pipe when a burning pipeline is overhauled;
the device for realizing the furnace gas purification method in the calcium carbide production process comprises the following steps that one of main components is a ring-shaped pipe, the number of the following combustion nozzles is increased by 20-30, the angle between every two of the main components is 15-25 degrees, after part of the following combustion nozzles are extinguished, the surrounding following combustion nozzles can ignite to form ring fire, the following combustion effect is improved, and full combustion is realized;
the determination of the burning accompanying nozzle requires that the short-circuit size of the burning accompanying nozzle, the aperture of a joint of the burning accompanying nozzle, the diameter of a spray hole and the size of the oxygen inlet amount are determined according to the pressure, the temperature, the content of furnace gas and the like in actual production; the flame is unstable, is influenced by wind direction, wind power, environmental temperature and the like, and is also used for solving the problem that the flame is too small when the concentration of CO in the power transmission furnace gas of the calcium carbide furnace is less than 10%;
the device for realizing the furnace gas purification method in the calcium carbide production process comprises a pressure remote transmission instrument which is one of main components and is arranged between the pneumatic explosion-proof ball valve A and the pneumatic explosion-proof ball valve B, so that the problem of internal leakage of the pneumatic valves can be measured, and the pressure measurement is more accurate;
the device for realizing the furnace gas purification method in the calcium carbide production process comprises a main part, wherein a manual stop valve is added, a nitrogen purge is additionally arranged, all the manual valves are closed during maintenance, nitrogen purge and nitrogen pressure maintaining are ensured, and a plugging blind plate is extracted at the rear end of the additionally arranged manual valve to ensure that a combustion-accompanying pipeline is isolated from a furnace gas main pipe during maintenance.
2. The method for purifying furnace gas in the calcium carbide production process according to claim 1, wherein the method comprises the following steps: according to the furnace gas purifying method in the calcium carbide production process, the bleeding flue torch system can automatically ignite, can locally ignite on site, and can manually ignite in a remote operation manner in a control room; alarming the fault of the ignition system; burner flame condition detection.
3. The method for purifying furnace gas in the calcium carbide production process according to claim 1, wherein the method comprises the following steps: the pressure of the instrument wind is 0.55-0.85 MPa, and nitrogen in nitrogen purging is adopted for torch speed sealing; the emptying torch area is 15m multiplied by 15m, the gas pressure of the fuel for ignition is 3-5 KPa, and the low heat value is 34.68MJ/m 3 。
4. The production device for realizing the furnace gas purification method in the calcium carbide production process according to claim 1, which is characterized in that: the number of the igniters is 2; the number of the high-energy igniters A and B is 2; the number of thermocouples of the temperature remote transmission instrument is 2.
5. The production device for realizing the furnace gas purification method in the calcium carbide production process according to claim 1, which is characterized in that: the production device comprises a discharging flue pipe, a torch lamp holder, a direct discharging valve, a windshield, a temperature remote transmission instrument, a burning head, an igniter, a fixed rib plate, a burning pipeline, a flange, a flame arrester, a pressure remote transmission instrument, an explosion-proof control box, a high-energy igniter A, a high-energy igniter B, a pneumatic explosion-proof ball valve A, a pneumatic explosion-proof ball valve B, a manual stop valve, a nitrogen purging valve, a main CO pipe, a PLC control box and a DCS automatic control system which are sequentially connected from bottom to top and from left to right; a torch lamp cap is arranged at the upper end of the diffusing smoke pipe; the upper end of the head of the torch lamp is provided with a straight discharge relief valve, a wind shield, an igniter and a burning head; the burning head is connected with a burning pipeline, and a pressure remote transmission instrument 12, a pneumatic explosion-proof ball valve A, a pneumatic explosion-proof ball valve B, a manual stop valve and nitrogen purging are arranged on the CO main pipe.
6. The production device for realizing the furnace gas purification method in the calcium carbide production process according to claim 1, which is characterized in that: the two igniter meters are respectively connected with the high-energy igniter A and the high-energy igniter B.
7. The production device for realizing the furnace gas purification method in the calcium carbide production process according to claim 1, which is characterized in that: the high-energy igniter A and the high-energy igniter B are connected with the PLC control box and are connected with the DCS automatic control system in parallel to display and operate.
8. The production device for realizing the furnace gas purification method in the calcium carbide production process according to claim 1, which is characterized in that: the fixed rib plate is used for fixing the burning accompanying pipeline, the torch lamp cap, the direct discharge relief valve and the wind shield.
9. The production device for realizing the furnace gas purification method in the calcium carbide production process according to claim 1, which is characterized in that: the flame arrester is arranged on the main pipe from CO.
10. The production device for realizing the furnace gas purification method in the calcium carbide production process according to claim 1, which is characterized in that: the wind shield is arranged on the periphery of the burning accompanying head, is provided with a through groove of 20 multiplied by 10 cm, is obliquely upwards by 15-25 degrees, and is used for ventilation, combustion oxygen supply and blocking rapid dilution of main combustion accompanying furnace gas caused by too fast air flow, so that the ignition reliability is improved.
11. The production device for realizing the furnace gas purification method in the calcium carbide production process according to claim 1, which is characterized in that: the burning head consists of a burning ring pipe, a ring pipe connecting hole, a burning nozzle and a cleaning hole.
12. The production device for realizing the furnace gas purification method in the calcium carbide production process according to claim 1, which is characterized in that: and the burning-accompanying ring pipe is provided with a ring pipe joint hole which is connected with the burning-accompanying nozzle, and the ring pipe joint hole is welded or connected with the burning-accompanying nozzle in a matching way.
13. The production device for realizing the furnace gas purification method in the calcium carbide production process according to claim 1, which is characterized in that: the cleaning hole is arranged on the burning-accompanying ring pipe, the sealing plug is arranged at the 4-position, and residues in the burning-accompanying ring pipe can be cleaned by unscrewing during maintenance.
14. The production device for realizing the furnace gas purification method in the calcium carbide production process according to claim 1, which is characterized in that: the burning accompanying nozzle is connected with the burning accompanying nozzle joint through a wire hole in a matching mode, through holes are formed in the periphery of the burning accompanying nozzle short-circuit cylinder body, and the burning accompanying nozzle joint is continuously ventilated for burning oxygen.
15. The production device for realizing the furnace gas purification method in the calcium carbide production process according to claim 1, which is characterized in that: the combustion accompanying nozzle joint consists of a spray hole, a joint shell and a joint seat, wherein a through hole with the diameter of 3mm is formed in the joint shell, and the lower part of the joint shell is a trapezoid through hole; the connector base is connected with the connector shell in a threaded hole matching way.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210159303.2A CN116678222A (en) | 2022-02-22 | 2022-02-22 | Furnace gas purifying method in calcium carbide production process |
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| CN202210159303.2A CN116678222A (en) | 2022-02-22 | 2022-02-22 | Furnace gas purifying method in calcium carbide production process |
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