CN102633122B - Pneumatic conveying and blast furnace injecting device for coke oven dust-removing ash and using method thereof - Google Patents
Pneumatic conveying and blast furnace injecting device for coke oven dust-removing ash and using method thereof Download PDFInfo
- Publication number
- CN102633122B CN102633122B CN201210092923.5A CN201210092923A CN102633122B CN 102633122 B CN102633122 B CN 102633122B CN 201210092923 A CN201210092923 A CN 201210092923A CN 102633122 B CN102633122 B CN 102633122B
- Authority
- CN
- China
- Prior art keywords
- coke oven
- removing dust
- fine coal
- unit
- valve
- 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
Links
Images
Landscapes
- Coke Industry (AREA)
Abstract
The invention discloses a pneumatic conveying and blast furnace injecting device for coke oven dust-removing ash and a using method of the device. The pneumatic conveying and blast furnace injecting device comprises a coke oven dust-removing ash pneumatic conveying air source unit, a coke oven dust-removing ash pneumatic conveying main unit, a gas-pressure balance unit, an ash conveying pipeline travel cleaning unit, a coke oven dust-removing ash and secondary coal distribution unit, a coke oven dust-removing ash and secondary coal grinding unit, a coke oven dust-removing ash and secondary coal grinded material collection unit, a pulverized coal baking unit, a coke oven dust-removing ash and secondary coal grinding process safe-extinguishment unit and a blast furnace injecting unit. The device completely solves the problem that coke oven dust-removing ash is used as one of the biggest coked environmental pollution sources by long-distance sealed pneumatic conveying, is safe and reliable in operation, improves the environmental protection benefit, the energy efficiency and the automatic production level, achieves full-automatic production operation, reduces the labour intensity of a worker and achieves the production management idea based on humanistic theory.
Description
Technical field
The present invention relates to field of metallurgy, especially relate to a kind of strength for removing dust of coke oven and carry and blast furnace blowing device and using method thereof.
Background technology
Along with the improvement of coke oven production process dust loss and applying of Dry Quenching Technology, coking industry can be collected a large amount of removing dust of coke ovens every day, and these removing dust of coke oven main components of collecting are coke powder, carbon content is all more than 85%, and the environmental protection of how to do well removing dust of coke oven is carried and effective comprehensive application is good problem to study.
Current domestic removing dust of coke oven traditional treatment method is to adopt humidification and use case tank Automobile Transportation to sintering stock ground, for sintering process.There are the following problems for traditional approach: automobile handling and the easy airborne dust of transportation, scatter, especially when the discharging of sintering deposit groove, dust is difficult to trapping, cause serious secondary pollution, sintering there are certain requirements the granularity of fuel simultaneously, as too small in fuel granularity, affect the permeability to air of sinter bed, because the most of particle diameter of coke powder in coking dedusting ash is less than 1mm, and these tiny coke powders make the permeability to air variation of sinter bed, affect sintering quality.Therefore, coking dedusting ash is also not exclusively suitable for the fuel of sintering, needs to carry and effectively utilize the new approach of searching for the environmental protection of coking dedusting ash for this reason.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of strength for removing dust of coke oven to carry and blast furnace blowing device and using method thereof for problems of the prior art, its objective is and change the traditional mode that removing dust of coke oven is carried, realizing environmental protection carries, simultaneously, solution motor transport cost is high, avoids expending the shortcomings such as new water damping.
Technical scheme of the present invention be this kind for the strength of removing dust of coke oven carry and blast furnace blowing device comprise removing dust of coke oven pneumatic transporting supply gas source unit, removing dust of coke oven strength carry main unit, air pressure balance unit, ash conveying pipe along journey block clearing unit, removing dust of coke oven and clean fine coal the provide and deliver levigate process safety of unit, removing dust of coke oven and the levigate unit of clean fine coal, removing dust of coke oven and the levigate material collection of clean fine coal unit, fine coal drying unit, removing dust of coke oven and clean fine coal put out a fire unit and blast furnace blowing unit, said units connects by corresponding plumbing system, the described removing dust of coke oven pneumatic transporting source unit of supplying gas is comprised of the first-hand movable valve connecting successively by corresponding plumbing system, pressurized air drum and second-hand's movable valve, from second-hand's movable valve pipeline out and removing dust of coke oven strength, carry main unit to be connected, described removing dust of coke oven strength carries main unit to be comprised of storehouse pumping system and two parts of ash conveying pipe end gas filled device, wherein storehouse pumping system is comprised of the first operated pneumatic valve connecting successively by corresponding plumbing system, the first orifice plate, the first non-return valve, defeated ash silo pump, the second operated pneumatic valve, the 3rd operated pneumatic valve and the 3rd manually-operated gate, on described defeated ash silo pump, is also connected with level-sensing device and the first pressure transmission device, pipe end gas filled device is comprised of the 5th operated pneumatic valve, the second orifice plate, the second non-return valve and the second pressure transmission device that connect successively by corresponding plumbing system, the end of the 3rd described manually-operated gate connects the first coke oven dust ash silo, and described air pressure balance unit is by plumbing system, to be connected the 4th operated pneumatic valve between the first coke oven dust ash silo and defeated ash silo pump, the other end of the second pressure transmission device is connected with clean fine coal dispensing unit with removing dust of coke oven, ash conveying pipe along journey block clearing unit between the second pressure transmission device and removing dust of coke oven and clean fine coal dispensing unit, described ash conveying pipe along journey block clearing unit by the 4th manually-operated gate connecting successively by corresponding plumbing system, the first electrically operated valve, the 3rd non-return valve and the 3rd orifice plate form, described removing dust of coke oven and clean fine coal dispensing unit comprise the second coke oven dust ash silo and clean fine coal storehouse, top, storehouse explosion venting valve and the first roof scrubber are arranged on the second coke oven dust ash silo top, electric planet unloading valve and the first electronic belt scale with frequency converter are arranged on the second coke oven dust ash silo below, the below that is arranged on clean fine coal storehouse with electronic paddle coal feeder and second electronic belt scale of frequency converter, described removing dust of coke oven and clean fine coal dispensing unit also comprise clean fine coal load-transfer device and clean fine coal and removing dust of coke oven dispensing belt feeder, described removing dust of coke oven and clean fine coal are levigate, and unit comprises the first clean fine coal and removing dust of coke oven compound storehouse, the second roof scrubber is arranged on the top in the first clean fine coal and removing dust of coke oven compound storehouse, and hyperbola hopper, gate valve, feeder, medium-speed pulverizer are arranged on the below in the first clean fine coal and removing dust of coke oven compound storehouse successively, the outlet of medium-speed pulverizer is connected with the levigate material collection of removing dust of coke oven and clean fine coal unit by plumbing system, described removing dust of coke oven and clean fine coal are levigate, and material collection unit comprises cloth bag collection machine, one of them outlet of cloth bag collection machine is connected with induced draft fan and chimney in turn, the outlet of cloth bag collection machine below is connected with Impeller powder feeder, fine coal sieve, the second clean fine coal and removing dust of coke oven compound storehouse and the second electrically operated valve in turn, and the 3rd roof scrubber is arranged on the second clean fine coal and removing dust of coke oven compound storehouse, described fine coal drying unit is connected on medium-speed pulverizer by corresponding plumbing system, and fine coal drying unit comprises blast-furnace hot-air exhaust-gas treatment unit and the 4th electrically operated valve connecting by corresponding plumbing system, described removing dust of coke oven and clean fine coal are levigate, and process safety fire extinguishing unit is connected on medium-speed pulverizer by corresponding plumbing system, and described removing dust of coke oven comprises with the levigate process safety fire extinguishing of clean fine coal unit nitrogen bag and the 3rd electrically operated valve being connected by corresponding plumbing system, described blast furnace blowing unit is connected to the other end of the second electrically operated valve, described blast furnace blowing unit comprises winding-up tank, electronic equalizer valve is connected with winding-up tank by different plumbing systems with fluidisation control cock, and injection valve is connected with winding-up tank by electronic fine coal valve with rifle valve.
Between described injection valve and fine coal valve, be provided with distributing box.
Between described cloth bag collection machine and induced draft fan, be provided with the silencer that reduces induced draft fan operation noise.
The using method of utilizing the above-mentioned conveying of the strength for removing dust of coke oven and blast furnace blowing device to carry out dedusting ash comprises:
1) operation removing dust of coke oven strength is carried main unit;
2) operation removing dust of coke oven and clean fine coal dispensing unit;
3) operation removing dust of coke oven and the levigate unit of clean fine coal;
4) operation removing dust of coke oven and the levigate material collection of clean fine coal unit;
5) operating blast furnaces winding-up unit.
Described removing dust of coke oven strength carries the operating procedure of main unit to comprise,
1) source of the gas part operation technique: the first-hand movable valve of pressurized air unit is opened, and be filled with pressurized air to pressurized air drum, open second-hand's movable valve after pressure reaches setting value;
2) air pressure balance operating procedure between the first coke oven dust ash silo and defeated ash silo pump: follow procedure is automatically opened the 4th operated pneumatic valve and just completed the air pressure balance between the first coke oven dust ash silo and defeated ash silo pump, this operation object is to guarantee that the material in the first coke oven dust ash silo can successfully enter in defeated ash silo pump;
3) defeated ash silo pump feed operation technique: follow procedure is opened the 3rd operated pneumatic valve automatically, defeated ash silo pump starts charging, when material level reaches level-sensing device setting value, the 3rd operated pneumatic valve follow procedure is closed automatically, defeated ash silo pump feed operation completes, this unit the 3rd manually-operated gate is often opened, and only closes during overhaul of the equipments;
4) removing dust of coke oven fluidisation operating procedure: follow procedure is opened the first operated pneumatic valve automatically, the flow of setting by the first orifice plate is filled with pressurized air in defeated ash silo pump, by the fluidizer in defeated ash silo pump, carry out fluidisation operation, when inflation pressure reaches the setting value of the first pressure transmission device, the first operated pneumatic valve follow procedure is closed automatically, fluidisation has operated, and this unit first non-return valve function is that material and the pressure gas in the defeated ash silo pump of blocking-up flows to air supply system;
5) removing dust of coke oven strength is carried operating procedure: follow procedure is opened the second operated pneumatic valve automatically, the 5th operated pneumatic valve of ash conveying pipe end gas filled device is also opened automatically simultaneously, and the removing dust of coke oven in defeated like this ash silo pump is just transported in the second coke oven dust ash silo by the compressed air of ash conveying pipe; In ash conveying pipe end gas filled device, the second orifice plate function is to set the flow of pressure gas, the second non-return valve function is that material and the pressure gas in blocking-up ash conveying pipe flows to air supply system, the function of the second pressure transmission device is to measure ash conveying pipe internal pressure, when pressure is less than setup pressure value, the 5th operated pneumatic valve follow procedure of ash conveying pipe end gas filled device is closed automatically, and this tank removing dust of coke oven strength conveying operations completes;
6) ash conveying pipe is along journey block clearing unit operation technique: when ash conveying pipe internal pressure surpasses the setting value of the second pressure transmission device, several ash conveying pipes are opened automatically along the first electrically operated valve follow procedure in journey block clearing unit, and are filled with pressure gas block clearing in ash conveying pipe; In this unit, the 4th manually-operated gate is often opened, and during maintenance, closes, and the 3rd non-return valve function is that material and the pressure gas in blocking-up ash conveying pipe flows to gas source pipe, and the 3rd orifice plate function is to set the flow of pressure gas.
Described removing dust of coke oven and clean fine coal dispensing unit operation technique comprise, the electric planet unloading valve of the automatic open belt frequency converter of follow procedure, the first electronic belt scale, clean fine coal belt conveyer, electronic paddle coal feeder with frequency converter, the second electronic belt scale and clean fine coal and removing dust of coke oven dispensing belt feeder, by the electric planet unloading valve with frequency converter and the first electronic belt scale, complete the ration distribution of removing dust of coke oven, by the electronic paddle coal feeder with frequency converter and the second electronic belt scale, complete the ration distribution of clean fine coal, the blending on clean fine coal and removing dust of coke oven dispensing belt feeder of the removing dust of coke oven of above ration distribution and clean fine coal, and be transported in the first clean fine coal and removing dust of coke oven compound storehouse by it, because the second coke oven dust ash silo is the terminal that strength is carried, be provided with top, storehouse explosion relief valve thereon for the pressure release in this storehouse, the first roof scrubber is for the dust collection of removing dust of coke oven discharging point, on the first clean fine coal and removing dust of coke oven compound storehouse, be provided with the second roof scrubber, for the dust collection of material blanking point.
The operating procedure of described removing dust of coke oven and the levigate unit of clean fine coal comprises,
1) follow procedure is opened gate valve, feeder, medium-speed pulverizer automatically, and the material in the first clean fine coal and removing dust of coke oven compound storehouse will be continuously by levigate;
2) because clean fine coal contains certain moisture content, for this this unit is provided with the stoving process of clean fine coal, as long as open blast-furnace hot-air exhaust-gas treatment unit and the 4th electrically operated valve, blast-furnace hot-air waste gas will enter continuously medium-speed pulverizer relevant portion clean fine coal and removing dust of coke oven are dried;
3) because clean fine coal and removing dust of coke oven are combustible material, for this this unit is provided with nitrogen extinguishing device, this device comprises nitrogen bag, the 3rd electrically operated valve and corresponding pipeline system, once clean fine coal and removing dust of coke oven burn in levigate process, program will be opened the 3rd electrically operated valve automatically, and nitrogen enters the operation of putting out a fire of medium-speed pulverizer relevant portion immediately.
The operating procedure of described removing dust of coke oven and clean fine coal are levigate material collection unit comprises,
1) follow procedure is opened induced draft fan automatically, and the material that medium-speed pulverizer is levigate will be inhaled into cloth bag collection machine, and this process removing dust of coke oven and the levigate material of clean fine coal are collected, and gas part enters atmosphere by chimney;
2) material that cloth bag collection machine is collected is transported in the second clean fine coal and removing dust of coke oven compound storehouse by Impeller powder feeder, fine coal sieve; The 3rd roof scrubber is for the dust collection of material blanking point, and fine coal sieve is for the separation of foreign material, and silencer function is to reduce the noise of induced draft fan operation.
The operating procedure of described blast furnace blowing unit comprises, by the unlatching of the second electrically operated valve, material dosing in the second clean fine coal and removing dust of coke oven compound storehouse is dispensed in winding-up tank, open subsequently fluidisation control cock to winding-up tank in inflated with nitrogen to goods fluid, after goods fluid finishes, open electronic equalizer valve and be again filled with nitrogen in winding-up tank, open electronic fine coal valve simultaneously material is sent into distributing box, by injection valve, rifle valve, clean fine coal and removing dust of coke oven mixed powder are jetted to blast furnace correlation unit, whole operating process can complete again.
This kind with said structure carried for the strength of removing dust of coke oven and blast furnace blowing device and using method thereof have the following advantages:
1. this kind carried for strength conveying and the logical long-distance of blast furnace blowing device, the closed strength of removing dust of coke oven, removing dust of coke oven has obtained basic solution as the problem of one of maximum environomental pollution source of coking, safety, reliability service all have lifting aspect three of environmental benefits, source benefit, production automation level.
2. this kind carried for the strength of removing dust of coke oven and blast furnace blowing device has been avoided removing dust of coke oven to need artificial execute-in-place humidification and put ash, Automobile Transportation, unloads the operations such as grey, accomplished fully-automatic production operation, reduce worker's labour intensity, realized the production and operation theory that people-oriented.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is structural representation of the present invention.
In Fig. 1,1: first-hand movable valve; 2: pressurized air drum; 3: second-hand's movable valve; 4: the first operated pneumatic valves; 5: the first orifice plates; 6: the first non-return valves; 7: defeated ash silo pump; 8: the second operated pneumatic valves; 9: the three operated pneumatic valves; 10: level-sensing device; 11: the first pressure transmission devices; 12: the four operated pneumatic valves; 13: the three manually-operated gates; 14: the first coke oven dust ash silos; 15: the five operated pneumatic valves; 16: the second orifice plates; 17: the second non-return valves; 18: the second pressure transmission devices; 19: the four manually-operated gates; 20: the first electrically operated valves; 21: the three non-return valves; 22: the three orifice plates; 23: top, storehouse explosion venting valve; 24: the second coke oven dust ash silos; 25: the first roof scrubbers; 26: clean fine coal storehouse; 27: clean fine coal load-transfer device; 28: with the electric planet unloading valve of frequency converter; 29: the first electronic belt scales; 30: with the electronic paddle coal feeder of frequency converter; 31: the second electronic belt scales; 32: clean fine coal and removing dust of coke oven dispensing belt feeder; 33: the first clean fine coals and removing dust of coke oven compound storehouse; 34: the second roof scrubbers; 35: hyperbola hopper; 36: gate valve; 37: feeder; 38: medium-speed pulverizer; 39: cloth bag collection machine; 40: Impeller powder feeder; 41: fine coal sieve; 42: silencer; 43: induced draft fan; 44: chimney; 45: the three roof scrubbers; 46: the second clean fine coals and removing dust of coke oven compound storehouse; 47: the second electrically operated valves; 48: winding-up tank; 49: electronic equalizer valve; 50: fluidisation control cock; 51: electronic fine coal valve; 52: distributing box; 53: injection valve; 54: rifle valve; 55: nitrogen bag; 56: the three electrically operated valves; 57: blast-furnace hot-air exhaust-gas treatment unit; 58: the four electrically operated valves.
The specific embodiment
Structure is known as shown in Figure 1, this kind carried for the strength of removing dust of coke oven and blast furnace blowing device comprise removing dust of coke oven pneumatic transporting supply gas source unit, removing dust of coke oven strength carry main unit, air pressure balance unit, ash conveying pipe along journey block clearing unit, removing dust of coke oven and clean fine coal the provide and deliver levigate process safety of unit, removing dust of coke oven and the levigate unit of clean fine coal, removing dust of coke oven and the levigate material collection of clean fine coal unit, fine coal drying unit, removing dust of coke oven and clean fine coal put out a fire unit and blast furnace blowing unit, said units connects by corresponding plumbing system, the removing dust of coke oven pneumatic transporting source unit of supplying gas is comprised of the first-hand movable valve 1 connecting successively by corresponding plumbing system, pressurized air drum 2 and second-hand's movable valve 3, from second-hand's movable valve 3 pipeline out and removing dust of coke oven strength, carry main unit to be connected, removing dust of coke oven strength carries main unit to be comprised of storehouse pumping system and two parts of ash conveying pipe end gas filled device, wherein storehouse pumping system is comprised of the first operated pneumatic valve 4, the first orifice plate 5, the first non-return valve 6, defeated ash silo pump 7, the second operated pneumatic valve 8, the 3rd operated pneumatic valve 9 and the 3rd manually-operated gate 13 that connect successively by corresponding plumbing system, is also connected with level-sensing device 10 and the first pressure transmission device 11 on defeated ash silo pump 7, pipe end gas filled device is comprised of the 5th operated pneumatic valve 15, the second orifice plate 16, the second non-return valve 17 and the second pressure transmission device 18 that connect successively by corresponding plumbing system, the end of the 3rd manually-operated gate 13 connects the first coke oven dust ash silo 14, and air pressure balance unit is by plumbing system, to be connected the 4th operated pneumatic valve 12 between the first coke oven dust ash silo 14 and defeated ash silo pump 7, the other end of the second pressure transmission device 18 is connected with clean fine coal dispensing unit with removing dust of coke oven, ash conveying pipe along journey block clearing unit between the second pressure transmission device 18 and removing dust of coke oven and clean fine coal dispensing unit, ash conveying pipe along journey block clearing unit by the 4th manually-operated gate 19 connecting successively by corresponding plumbing system, the first electrically operated valve 20, the 3rd non-return valve 21 and the 3rd orifice plate 22 form, removing dust of coke oven and clean fine coal dispensing unit comprise the second coke oven dust ash silo 24 and clean fine coal storehouse 26, top, storehouse explosion venting valve 23 and the first roof scrubber 25 are arranged on the second coke oven dust ash silo 24 tops, electric planet unloading valve 28 and the first electronic belt scale 29 with frequency converter are arranged on the second coke oven dust ash silo 24 belows, the below that is arranged on clean fine coal storehouse 26 with electronic paddle coal feeder 30 and second electronic belt scale 31 of frequency converter, removing dust of coke oven and clean fine coal dispensing unit also comprise clean fine coal load-transfer device 27 and clean fine coal and removing dust of coke oven dispensing belt feeder 32, removing dust of coke oven and clean fine coal are levigate, and unit comprises the first clean fine coal and removing dust of coke oven compound storehouse 33, the second roof scrubber 34 is arranged on the top in the first clean fine coal and removing dust of coke oven compound storehouse 33, and hyperbola hopper 35, gate valve 36, feeder 37, medium-speed pulverizer 38 are arranged on the below in the first clean fine coal and removing dust of coke oven compound storehouse 33 successively, the outlet of medium-speed pulverizer 38 is connected with the levigate material collection of removing dust of coke oven and clean fine coal unit by plumbing system, removing dust of coke oven and clean fine coal are levigate, and material collection unit comprises cloth bag collection machine 39, cloth bag collection machine 39 one of them outlet are connected with induced draft fan 43 and chimney 44 in turn, and between cloth bag collection machine 39 and induced draft fan 43, are provided with the silencer 42 that reduces induced draft fan 43 operation noises, cloth bag collection machine 39 below outlets are connected with Impeller powder feeder 40, fine coal sieve the 41, second clean fine coal and removing dust of coke oven compound storehouse 46 in turn and the second electrically operated valve 47, the three roof scrubbers 45 are arranged on the second clean fine coal and removing dust of coke oven compound storehouse 46, fine coal drying unit is connected on medium-speed pulverizer 38 by corresponding plumbing system, and fine coal drying unit comprises blast-furnace hot-air exhaust-gas treatment unit 57 and the 4th electrically operated valve 58 connecting by corresponding plumbing system, removing dust of coke oven and clean fine coal are levigate, and process safety fire extinguishing unit is connected on medium-speed pulverizer 38 by corresponding plumbing system, and removing dust of coke oven comprises with the levigate process safety fire extinguishing of clean fine coal unit nitrogen bag 55 and the 3rd electrically operated valve 56 being connected by corresponding plumbing system, blast furnace blowing unit is connected to the other end of the second electrically operated valve 47, blast furnace blowing unit comprises winding-up tank 48, electronic equalizer valve 49 is connected with winding-up tank 48 by different plumbing systems with fluidisation control cock 50, injection valve 53 is connected with winding-up tank 48 by electronic fine coal valve 51 with rifle valve 54, and is provided with distributing box 52 between injection valve 53 and fine coal valve 51.
The using method of utilizing the above-mentioned conveying of the strength for removing dust of coke oven and blast furnace blowing device to carry out dedusting ash comprises:
1) operation removing dust of coke oven strength is carried main unit;
2) operation removing dust of coke oven and clean fine coal dispensing unit;
3) operation removing dust of coke oven and the levigate unit of clean fine coal;
4) operation removing dust of coke oven and the levigate material collection of clean fine coal unit;
5) operating blast furnaces winding-up unit.
Wherein, removing dust of coke oven strength carries the operating procedure of main unit to comprise,
1) source of the gas part operation technique: the first-hand movable valve 1 of pressurized air unit is opened, and be filled with pressurized air to pressurized air drum 2, open second-hand's movable valve 3 after pressure reaches setting value;
2) air pressure balance operating procedure between the first coke oven dust ash silo 14 and defeated ash silo pump 7: follow procedure is automatically opened the 4th operated pneumatic valve 12 and just completed the air pressure balance between the first coke oven dust ash silo 14 and defeated ash silo pump 7, this operation object is to guarantee that the material in the first coke oven dust ash silo 14 can successfully enter in defeated ash silo pump 7;
3) defeated ash silo pump 7 feed operation techniques: follow procedure is opened the 3rd operated pneumatic valve 9 automatically, defeated ash silo pump 7 starts charging, when material level reaches level-sensing device 10 setting value, the 3rd operated pneumatic valve 9 follow procedures are closed automatically, defeated ash silo pump 7 feed operation complete, this unit the 3rd manually-operated gate 13 is often opened, and only closes during overhaul of the equipments;
4) removing dust of coke oven fluidisation operating procedure: follow procedure is opened the first operated pneumatic valve 4 automatically, the flow of setting by the first orifice plate 5 is filled with pressurized air in defeated ash silo pump 7, by the fluidizer in defeated ash silo pump 7, carry out fluidisation operation, when inflation pressure reaches the setting value of the first pressure transmission device 11, the first operated pneumatic valve 4 follow procedures are closed automatically, fluidisation has operated, and these unit first non-return valve 6 functions are that material and the pressure gas in the defeated ash silo pump 7 of blocking-up flows to air supply system;
5) removing dust of coke oven strength is carried operating procedure: follow procedure is opened the second operated pneumatic valve 8 automatically, the 5th operated pneumatic valve 15 of ash conveying pipe end gas filled device is also opened automatically simultaneously, and the removing dust of coke oven in defeated like this ash silo pump 7 is just transported in the second coke oven dust ash silo 24 by the compressed air of ash conveying pipe; In ash conveying pipe end gas filled device, the second orifice plate 16 functions are to set the flow of pressure gas, the second non-return valve 17 functions are that material and the pressure gas in blocking-up ash conveying pipe flows to air supply system, the function of the second pressure transmission device 18 is to measure ash conveying pipe internal pressure, when pressure is less than setup pressure value, the 5th operated pneumatic valve 15 follow procedures of ash conveying pipe end gas filled device are closed automatically, and this tank removing dust of coke oven strength conveying operations completes;
6) ash conveying pipe is along journey block clearing unit operation technique: when ash conveying pipe internal pressure surpasses the setting value of the second pressure transmission device 18, several ash conveying pipes are opened automatically along the first electrically operated valve 20 follow procedures in journey block clearing unit, and are filled with pressure gas block clearing in ash conveying pipe; In this unit, the 4th manually-operated gate 19 is often opened, and during maintenance, closes, and the 3rd non-return valve 21 functions are that material and the pressure gas in blocking-up ash conveying pipe flows to gas source pipe, and the 3rd orifice plate 22 functions are to set the flow of pressure gas.
Removing dust of coke oven and clean fine coal dispensing unit operation technique comprise, the electric planet unloading valve 28 of the automatic open belt frequency converter of follow procedure, the first electronic belt scale 29, clean fine coal belt conveyer 27, electronic paddle coal feeder 30 with frequency converter, the second electronic belt scale 31 and clean fine coal and removing dust of coke oven dispensing belt feeder 32, by the electric planet unloading valve 28 with frequency converter and the first electronic belt scale 29, complete the ration distribution of removing dust of coke oven, by the electronic paddle coal feeder 30 with frequency converter and the second electronic belt scale 31, complete the ration distribution of clean fine coal, the blending on clean fine coal and removing dust of coke oven dispensing belt feeder 32 of the removing dust of coke oven of above ration distribution and clean fine coal, and be transported in the first clean fine coal and removing dust of coke oven compound storehouse 33 by it, terminal because the second coke oven dust ash silo 24 is carried for strength, is provided with top, storehouse explosion relief valve 23 thereon for the pressure release in this storehouse, and the first roof scrubber 25 is for the dust collection of removing dust of coke oven discharging point, on the first clean fine coal and removing dust of coke oven compound storehouse 33, be provided with the second roof scrubber 34, for the dust collection of material blanking point.
The operating procedure of removing dust of coke oven and the levigate unit of clean fine coal comprises,
1) material that follow procedure is opened in gate valve 36, feeder 37, medium-speed pulverizer 38, the first clean fine coals and removing dust of coke oven compound storehouse 33 automatically will be continuously by levigate;
2) because clean fine coal contains certain moisture content, for this this unit is provided with the stoving process of clean fine coal, as long as open blast-furnace hot-air exhaust-gas treatment unit 57 and the 4th electrically operated valve 58, blast-furnace hot-air waste gas will enter continuously medium-speed pulverizer 38 relevant portions clean fine coal and removing dust of coke oven are dried;
3) because clean fine coal and removing dust of coke oven are combustible material, for this this unit is provided with nitrogen extinguishing device, this device comprises nitrogen bag 55, the 3rd electrically operated valve 56 and corresponding pipeline system, once clean fine coal and removing dust of coke oven burn in levigate process, program will be opened the 3rd electrically operated valve 56 automatically, and nitrogen enters the operation of putting out a fire of medium-speed pulverizer 38 relevant portions immediately.
The operating procedure of removing dust of coke oven and clean fine coal are levigate material collection unit comprises,
1) follow procedure is opened induced draft fan 43 automatically, and the material that medium-speed pulverizer 38 is levigate will be inhaled into cloth bag collection machine 39, and this process removing dust of coke oven and the levigate material of clean fine coal are collected, and gas part enters atmosphere by chimney 44;
2) material that cloth bag collection machine 39 is collected is transported in the second clean fine coal and removing dust of coke oven compound storehouse 46 by Impeller powder feeder 40, fine coal sieve 41; The 3rd roof scrubber 45 is for the dust collection of material blanking point, and fine coal sieves 41 separation for foreign material, and silencer 42 functions are to reduce the noise of induced draft fan 43 operations.
The operating procedure of blast furnace blowing unit comprises, by the unlatching of the second electrically operated valve 47, material dosing in the second clean fine coal and removing dust of coke oven compound storehouse 46 is dispensed in winding-up tank 48, open subsequently fluidisation control cock 50 to winding-up tank 48 interior inflated with nitrogen to goods fluid, after goods fluid finishes, open electronic equalizer valve 49 and be again filled with nitrogen in winding-up tank 48, open electronic fine coal valve 51 simultaneously material is sent into distributing box 52, again by injection valve 53, rifle valve 54 jets clean fine coal and removing dust of coke oven mixed powder to blast furnace correlation unit, whole operating process can complete.
This kind carries for the strength of removing dust of coke oven and blast furnace blowing device has been accomplished safety, reliability service, and implementation result is mainly reflected in environmental benefit, source benefit, three aspects of production automation level lifting.
Environmental benefit aspect: logical long-distance, closed strength are carried, removing dust of coke oven has obtained basic solution as the problem of one of maximum environomental pollution source of coking.
Source benefit aspect: turn waste into wealth, with existing transportation horizontal, calculate, to blast furnace system, carry 3.3 ten thousand tons of high eating value coke powders continuously and stably every year on average, amount to approximately 3.0266 ten thousand tons of clean fine coals, amount to approximately 3934.58 ten thousand yuan of Renminbi, approximately 2,611 ten thousand yuan of deduction cost direct economic benefits, the while can be cancelled plan and the humidifying technology of Automobile Transportation 20 car coke powders every day, annual approximately 7300 tons, the new water of saving.
Production automation level lifting aspect: avoid existing removing dust of coke oven to need artificial execute-in-place humidification and put ash, Automobile Transportation, unload the operations such as ash, realizing fully-automatic production operation, reducing worker's labour intensity, having realized the production and operation theory that people-oriented.
Claims (9)
1. the strength for removing dust of coke oven is carried and blast furnace blowing device, it is characterized in that: described strength is carried and blast furnace blowing device comprises the removing dust of coke oven pneumatic transporting source unit of supplying gas, removing dust of coke oven strength is carried main unit, air pressure balance unit, ash conveying pipe is along journey block clearing unit, removing dust of coke oven and clean fine coal dispensing unit, removing dust of coke oven and clean fine coal are levigate unit, removing dust of coke oven and clean fine coal are levigate material collection unit, fine coal drying unit, removing dust of coke oven and clean fine coal are levigate process safety fire extinguishing unit and blast furnace blowing unit, said units connects by corresponding plumbing system, the described removing dust of coke oven pneumatic transporting source unit of supplying gas is comprised of the first-hand movable valve (1) connecting successively by corresponding plumbing system, pressurized air drum (2) and second-hand's movable valve (3), from second-hand's movable valve (3) pipeline out and removing dust of coke oven strength, carry main unit to be connected, described removing dust of coke oven strength carries main unit to be comprised of storehouse pumping system and two parts of ash conveying pipe end gas filled device, wherein storehouse pumping system is by the first operated pneumatic valve (4) connecting successively by corresponding plumbing system, the first orifice plate (5), the first non-return valve (6), defeated ash silo pump (7), the second operated pneumatic valve (8), the 3rd operated pneumatic valve (9) and the 3rd manually-operated gate (13) form, on described defeated ash silo pump (7), be also connected with level-sensing device (10) and the first pressure transmission device (11), pipe end gas filled device is comprised of the 5th operated pneumatic valve (15), the second orifice plate (16), the second non-return valve (17) and the second pressure transmission device (18) that connect successively by corresponding plumbing system, the end of the 3rd described manually-operated gate (13) connects the first coke oven dust ash silo (14), and described air pressure balance unit is by plumbing system, to be connected the 4th operated pneumatic valve (12) between the first coke oven dust ash silo (14) and defeated ash silo pump (7), the other end of the second pressure transmission device (18) is connected with clean fine coal dispensing unit with removing dust of coke oven, ash conveying pipe is positioned between the second pressure transmission device (18) and removing dust of coke oven and clean fine coal dispensing unit along journey block clearing unit, described ash conveying pipe along journey block clearing unit by the 4th manually-operated gate (19) connecting successively by corresponding plumbing system, the first electrically operated valve (20), the 3rd non-return valve (21) and the 3rd orifice plate (22) form, described removing dust of coke oven and clean fine coal dispensing unit comprise the second coke oven dust ash silo (24) and clean fine coal storehouse (26), top, storehouse explosion venting valve (23) and the first roof scrubber (25) are arranged on the second coke oven dust ash silo (24) top, electric planet unloading valve (28) and the first electronic belt scale (29) with frequency converter are arranged on the second coke oven dust ash silo (24) below, the below that is arranged on clean fine coal storehouse (26) with electronic paddle coal feeder (30) and second electronic belt scale (31) of frequency converter, described removing dust of coke oven and clean fine coal dispensing unit also comprise clean fine coal load-transfer device (27) and clean fine coal and removing dust of coke oven dispensing belt feeder (32), described removing dust of coke oven and clean fine coal are levigate, and unit comprises the first clean fine coal and removing dust of coke oven compound storehouse (33), the second roof scrubber (34) is arranged on the top in the first clean fine coal and removing dust of coke oven compound storehouse (33), and hyperbola hopper (35), gate valve (36), feeder (37), medium-speed pulverizer (38) are arranged on the below in the first clean fine coal and removing dust of coke oven compound storehouse (33) successively, the outlet of medium-speed pulverizer (38) is connected with the levigate material collection of removing dust of coke oven and clean fine coal unit by plumbing system, described removing dust of coke oven and clean fine coal are levigate, and material collection unit comprises cloth bag collection machine (39), one of them outlet of cloth bag collection machine (39) is connected with induced draft fan (43) and chimney (44) in turn, the outlet of cloth bag collection machine (39) below is connected with Impeller powder feeder (40) in turn, fine coal sieve (41), the second clean fine coal and removing dust of coke oven compound storehouse (46) and the second electrically operated valve (47), the 3rd roof scrubber (45) is arranged on the second clean fine coal and removing dust of coke oven compound storehouse (46), it is upper that described fine coal drying unit is connected to medium-speed pulverizer (38) by corresponding plumbing system, and fine coal drying unit comprises blast-furnace hot-air exhaust-gas treatment unit (57) and the 4th electrically operated valve (58) connecting by corresponding plumbing system, described removing dust of coke oven and clean fine coal are levigate, and process safety fire extinguishing unit is connected to medium-speed pulverizer (38) above by corresponding plumbing system, and described removing dust of coke oven comprises with the levigate process safety fire extinguishing of clean fine coal unit nitrogen bag (55) and the 3rd electrically operated valve (56) being connected by corresponding plumbing system, described blast furnace blowing unit is connected to the other end of the second electrically operated valve (47), described blast furnace blowing unit comprises winding-up tank (48), electronic equalizer valve (49) is connected with winding-up tank (48) by different plumbing systems with fluidisation control cock (50), and injection valve (53) is connected with winding-up tank (48) by electronic fine coal valve (51) with rifle valve (54).
2. a kind of strength for removing dust of coke oven according to claim 1 is carried and blast furnace blowing device, it is characterized in that: between described injection valve (53) and fine coal valve (51), be provided with distributing box (52).
3. a kind of strength for removing dust of coke oven according to claim 1 and 2 is carried and blast furnace blowing device, it is characterized in that: between described cloth bag collection machine (39) and induced draft fan (43), be provided with the silencer (42) that reduces induced draft fan (43) operation noise.
4. utilize the strength for removing dust of coke oven described in claim 1-3 any one claim to carry and blast furnace blowing device carries out the using method of dedusting ash, it is characterized in that: the using method of described dedusting ash comprises,
1) operation removing dust of coke oven strength is carried main unit;
2) operation removing dust of coke oven and clean fine coal dispensing unit;
3) operation removing dust of coke oven and the levigate unit of clean fine coal;
4) operation removing dust of coke oven and the levigate material collection of clean fine coal unit;
5) operating blast furnaces winding-up unit.
5. the using method of utilizing strength conveying and blast furnace blowing device to carry out dedusting ash according to claim 4, is characterized in that: described removing dust of coke oven strength carries the operating procedure of main unit to comprise,
1) source of the gas part operation technique: the first-hand movable valve (1) of pressurized air unit is opened, and be filled with pressurized air to pressurized air drum (2), open second-hand's movable valve (3) after pressure reaches setting value;
2) air pressure balance operating procedure between the first coke oven dust ash silo (14) and defeated ash silo pump (7): follow procedure is automatically opened the 4th operated pneumatic valve (12) and just completed the air pressure balance between the first coke oven dust ash silo (14) and defeated ash silo pump (7), this operation object is to guarantee that the material in the first coke oven dust ash silo (14) can successfully enter in defeated ash silo pump (7);
3) defeated ash silo pump (7) feed operation technique: follow procedure is opened the 3rd operated pneumatic valve (9) automatically, defeated ash silo pump (7) starts charging, when material level reaches level-sensing device (10) setting value, the 3rd operated pneumatic valve (9) follow procedure is closed automatically, defeated ash silo pump (7) feed operation completes, this unit the 3rd manually-operated gate (13) is often opened, and only closes during overhaul of the equipments;
4) removing dust of coke oven fluidisation operating procedure: follow procedure is opened the first operated pneumatic valve (4) automatically, the flow of setting by the first orifice plate (5) is filled with pressurized air in defeated ash silo pump (7), by the fluidizer in defeated ash silo pump (7), carry out fluidisation operation, when inflation pressure reaches the setting value of the first pressure transmission device (11), the first operated pneumatic valve (4) follow procedure is closed automatically, fluidisation has operated, and this unit the first non-return valve (6) function is that material and the pressure gas in the defeated ash silo pump of blocking-up (7) flows to air supply system;
5) removing dust of coke oven strength is carried operating procedure: follow procedure is opened the second operated pneumatic valve (8) automatically, the 5th operated pneumatic valve (15) of ash conveying pipe end gas filled device is also opened automatically simultaneously, and the removing dust of coke oven in defeated like this ash silo pump (7) is just transported in the second coke oven dust ash silo (24) by the compressed air of ash conveying pipe; In ash conveying pipe end gas filled device, the second orifice plate (16) function is to set the flow of pressure gas, the second non-return valve (17) function is that material and the pressure gas in blocking-up ash conveying pipe flows to air supply system, the function of the second pressure transmission device (18) is to measure ash conveying pipe internal pressure, when pressure is less than setup pressure value, the 5th operated pneumatic valve (15) follow procedure of ash conveying pipe end gas filled device is closed automatically, and this tank removing dust of coke oven strength conveying operations completes;
6) ash conveying pipe is along journey block clearing unit operation technique: when ash conveying pipe internal pressure surpasses the setting value of the second pressure transmission device (18), several ash conveying pipes are opened automatically along the first electrically operated valve (20) follow procedure in journey block clearing unit, and are filled with pressure gas block clearing in ash conveying pipe; In this unit, the 4th manually-operated gate (19) is often opened, and during maintenance, closes, and the 3rd non-return valve (21) function is that material and the pressure gas in blocking-up ash conveying pipe flows to gas source pipe, and the 3rd orifice plate (22) function is to set the flow of pressure gas.
6. according to claim 5ly utilize strength to carry and blast furnace blowing device carries out the using method of dedusting ash, it is characterized in that: described removing dust of coke oven and clean fine coal dispensing unit operation technique comprise, the electric planet unloading valve (28) of the automatic open belt frequency converter of follow procedure, the first electronic belt scale (29), clean fine coal belt conveyer (27), electronic paddle coal feeder (30) with frequency converter, the second electronic belt scale (31) and clean fine coal and removing dust of coke oven dispensing belt feeder (32), by the electric planet unloading valve (28) with frequency converter and the first electronic belt scale (29), complete the ration distribution of removing dust of coke oven, by the electronic paddle coal feeder (30) with frequency converter and the second electronic belt scale (31), complete the ration distribution of clean fine coal, the removing dust of coke oven of above ration distribution and clean fine coal are in clean fine coal and the upper blending of removing dust of coke oven dispensing belt feeder (32), and be transported in the first clean fine coal and removing dust of coke oven compound storehouse (33) by it, terminal because the second coke oven dust ash silo (24) is carried for strength, is provided with top, storehouse explosion relief valve (23) thereon for the pressure release in this storehouse, and the first roof scrubber (25) is for the dust collection of removing dust of coke oven discharging point, on the first clean fine coal and removing dust of coke oven compound storehouse (33), be provided with the second roof scrubber (34), for the dust collection of material blanking point.
7. according to claim 6ly utilize strength to carry and blast furnace blowing device carries out the using method of dedusting ash, it is characterized in that: the operating procedure of described removing dust of coke oven and the levigate unit of clean fine coal comprises,
1) follow procedure is opened gate valve (36), feeder (37), medium-speed pulverizer (38) automatically, and the material in the first clean fine coal and removing dust of coke oven compound storehouse (33) will be continuously by levigate;
2) because clean fine coal contains certain moisture content, for this this unit is provided with the stoving process of clean fine coal, as long as open blast-furnace hot-air exhaust-gas treatment unit (57) and the 4th electrically operated valve (58), blast-furnace hot-air waste gas will enter continuously medium-speed pulverizer (38) relevant portion clean fine coal and removing dust of coke oven are dried;
3) because clean fine coal and removing dust of coke oven are combustible material, for this this unit is provided with nitrogen extinguishing device, this device comprises nitrogen bag (55), the 3rd electrically operated valve (56) and corresponding pipeline system, once clean fine coal and removing dust of coke oven burn in levigate process, program will be opened the 3rd electrically operated valve (56) automatically, and nitrogen enters the operation of putting out a fire of medium-speed pulverizer (38) relevant portion immediately.
8. according to claim 7ly utilize strength to carry and blast furnace blowing device carries out the using method of dedusting ash, it is characterized in that: the operating procedure of described removing dust of coke oven and clean fine coal are levigate material collection unit comprises,
1) follow procedure is opened induced draft fan (43) automatically, and the material that medium-speed pulverizer (38) is levigate will be inhaled into cloth bag collection machine (39), and this process removing dust of coke oven and the levigate material of clean fine coal are collected, and gas partly enters atmosphere by chimney (44);
2) material that cloth bag collection machine (39) is collected is transported in the second clean fine coal and removing dust of coke oven compound storehouse (46) by Impeller powder feeder (40), fine coal sieve (41); The 3rd roof scrubber (45) is for the dust collection of material blanking point, and fine coal sieve (41) is for the separation of foreign material, and silencer (42) function is to reduce the noise of induced draft fan (43) operation.
9. according to claim 8ly utilize strength to carry and blast furnace blowing device carries out the using method of dedusting ash, it is characterized in that: the operating procedure of described blast furnace blowing unit comprises, by the unlatching of the second electrically operated valve (47), material dosing in the second clean fine coal and removing dust of coke oven compound storehouse (46) is dispensed in winding-up tank (48), open subsequently fluidisation control cock (50) to winding-up tank (48) interior inflated with nitrogen to goods fluid, after goods fluid finishes, open electronic equalizer valve (49) and be again filled with nitrogen in winding-up tank (48), open electronic fine coal valve (51) simultaneously material is sent into distributing box (52), again by injection valve (53), rifle valve (54) jets clean fine coal and removing dust of coke oven mixed powder to blast furnace correlation unit, whole operating process can complete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210092923.5A CN102633122B (en) | 2012-03-31 | 2012-03-31 | Pneumatic conveying and blast furnace injecting device for coke oven dust-removing ash and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210092923.5A CN102633122B (en) | 2012-03-31 | 2012-03-31 | Pneumatic conveying and blast furnace injecting device for coke oven dust-removing ash and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102633122A CN102633122A (en) | 2012-08-15 |
| CN102633122B true CN102633122B (en) | 2014-01-22 |
Family
ID=46617733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210092923.5A Active CN102633122B (en) | 2012-03-31 | 2012-03-31 | Pneumatic conveying and blast furnace injecting device for coke oven dust-removing ash and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102633122B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103057935A (en) * | 2013-01-18 | 2013-04-24 | 戚宗华 | Material balance feeding mechanism of belt conveyor |
| CN105018666B (en) * | 2014-04-28 | 2017-12-26 | 宝山钢铁股份有限公司 | A kind of method using COREX melting and reducing dedusting coal dusts |
| CN104848241A (en) * | 2015-04-08 | 2015-08-19 | 首钢京唐钢铁联合有限责任公司 | Coked ash recovery method |
| CN107126124B (en) * | 2017-03-30 | 2020-04-07 | 珠海优特智厨科技有限公司 | Seasoning batching system |
| CN108300824A (en) * | 2018-02-06 | 2018-07-20 | 南通东来冶金装备有限公司 | A kind of coking dedusting ash coke powder blast furnace blowing synergy utilizes system and technique |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101417752A (en) * | 2008-11-11 | 2009-04-29 | 上海宝钢工程技术有限公司 | Dust removing process of coal fine spraying system and apparatus thereof |
| CN202575416U (en) * | 2012-03-31 | 2012-12-05 | 马钢(集团)控股有限公司 | Pneumatic transmission and blast furnace injection device for coke oven fly ash |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58172116A (en) * | 1982-03-31 | 1983-10-08 | Nippon Steel Corp | Feeder for powdered fuel |
-
2012
- 2012-03-31 CN CN201210092923.5A patent/CN102633122B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101417752A (en) * | 2008-11-11 | 2009-04-29 | 上海宝钢工程技术有限公司 | Dust removing process of coal fine spraying system and apparatus thereof |
| CN202575416U (en) * | 2012-03-31 | 2012-12-05 | 马钢(集团)控股有限公司 | Pneumatic transmission and blast furnace injection device for coke oven fly ash |
Non-Patent Citations (6)
| Title |
|---|
| 在高炉喷吹煤粉中添加高炉除尘灰的试验研究;韩晓东;《四川冶金》;20101231;第32卷(第6期);第16-19页 * |
| 张伟.高炉喷吹煤粉中添加除尘灰的试验研究.《冶金丛刊》.2011,(第4期), |
| 王志君.鞍钢高炉除尘灰综合喷吹试验研究.《炼铁》.2010,第29卷(第1期), |
| 鞍钢高炉除尘灰综合喷吹试验研究;王志君;《炼铁》;20100228;第29卷(第1期);第51-53页 * |
| 韩晓东.在高炉喷吹煤粉中添加高炉除尘灰的试验研究.《四川冶金》.2010,第32卷(第6期), |
| 高炉喷吹煤粉中添加除尘灰的试验研究;张伟;《冶金丛刊》;20110831(第4期);第4-6页及29页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102633122A (en) | 2012-08-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102502262B (en) | Pneumatic transmission and blast furnace injection technology and system for removing dust of coke oven | |
| CN202575416U (en) | Pneumatic transmission and blast furnace injection device for coke oven fly ash | |
| CN102633122B (en) | Pneumatic conveying and blast furnace injecting device for coke oven dust-removing ash and using method thereof | |
| CN102974211A (en) | Circulating fluidized bed boiler in-furnace desulfurization device | |
| CN103611616A (en) | Lime stone milling system | |
| CN102839241A (en) | Method for feeding titanium fine powder serviced as furnace protecting agent of blast furnace into furnace through injection system | |
| CN202297640U (en) | Pneumatic multi-stage conveying system for blast furnace gas ash | |
| CN207418781U (en) | System is sprayed using the blast-furnace coal powder system of system negative pressure prevention pulverized coal bin fire | |
| CN212504950U (en) | System for gravity dust removal and ash discharge of blast furnace | |
| CN203695172U (en) | Limestone pulverizing system | |
| CN103332458A (en) | Pneumatic conveying system for removing dust and fine ash in dry process of converter gas | |
| CN102409118B (en) | Ferrous and carbonaceous dust cyclic reutilization process and equipment | |
| CN205347463U (en) | Allocate device of fine coke in blast furnace jetting raw coal into | |
| CN103468837A (en) | Safe method applicable to shaft furnace soft coal preparation and jetting | |
| CN201493302U (en) | Cyclone furnace fly ash remelting method chromium residue directly into furnace detoxification system | |
| CN203512422U (en) | Sintering flue gas desulfurized fly ash bin | |
| CN103333984A (en) | Converter primary exhaust gas dry dedusting coarse ash pneumatic conveying system | |
| WO2019105109A1 (en) | Dry dedusting dust-free bulk-cement discharging method | |
| CN103045781B (en) | Blast furnace dust winding-up utilizes technique and device | |
| CN202296396U (en) | A grinding machine feeding apparatus | |
| CN210159453U (en) | Novel semi-dry desulfurization lime feeding metering system | |
| CN212451336U (en) | System for utilize flue gas tail gas preparation buggy | |
| CN210796511U (en) | Blast furnace gas ash comprehensive utilization device | |
| CN103333985A (en) | Converter gas dry dedusting coarse ash pneumatic conveying system | |
| CN103318648B (en) | Converter gas dry-method dedusting cinder pneumatic conveying method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |