CN101798668A - Zinc-plating liquid internal heating device and heating method - Google Patents
Zinc-plating liquid internal heating device and heating method Download PDFInfo
- Publication number
- CN101798668A CN101798668A CN 201010139957 CN201010139957A CN101798668A CN 101798668 A CN101798668 A CN 101798668A CN 201010139957 CN201010139957 CN 201010139957 CN 201010139957 A CN201010139957 A CN 201010139957A CN 101798668 A CN101798668 A CN 101798668A
- Authority
- CN
- China
- Prior art keywords
- air
- gas
- pipe
- heating
- ignition
- 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.)
- Granted
Links
Images
Landscapes
- Coating With Molten Metal (AREA)
Abstract
The invention relates to a zinc-plating liquid internal heating device and a heating method. The heating device comprises a heating ceramic pipe, a combustion chamber and a fuel gas pipe communicated into the combustion chamber are arranged in the heating ceramic pipe, a combustion nozzle is connected with the end part of the fuel gas pipe, an ignition pipe with the contracted front end is sheathed outside the fuel gas pipe, an air pipe is sheathed outside the ignition pipe, both ends of the air pipe are respectively communicated with an external air pipeline and the combustion chamber, an air inlet hole is arranged on the pipe wall of the ignition pipe, and the fuel gas pipe and the air pipe are opened and closed in a pulse mode. The heating device of the invention has the advantages that the fuel gas pipe and the air pipe are arranged in the heating ceramic pipe, the introduction amount of the fuel gas and the air is controlled through a controller, the fuel gas and the air are respectively introduced into the combustion chamber to be mixed and then ignited according to the set proportion, and the combustion blasting caused by improper air and fuel gas proportion regulation because of high hydrogen content in the coal gas. Thereby, the method for heating the zinc-plating liquid becomes possible by using the coke gas. The heating method of the invention adopts the pulse type heating, and uses the air for clearing the waste gas in the ceramic pipe before or after each time of ignition, and in addition, the relatively separated mode of the ignition chamber and the combustion chamber is adopted, so the hydrogen gas deflagration is avoided, and the operation safety is ensured.
Description
Technical field
The present invention relates to a kind of heating unit of hot-galvanized cauldron/groove, being specially a kind of is the galvanizing flux inner heating device of fuel with the coke-oven gas.
Background technology
Existing galvanizing technique comprises pot galvanize and two kinds of technologies of cold galvanizing, and wherein pot galvanize technology is used comparatively extensive.Early stage hot-galvanized cauldron adopts external heating mode, and it causes the corrosion of zinc liquid to steel zinc pot easily, and the zinc pot that causes after the corrosion damages, zinc liquid inner quality descends and a large amount of zinc is generated situations such as cadmia.In mid-term in last century, invented last heating technique, utilized the mode of heat emission to heat, as Chinese patent 95113967 disclosed " a kind of hot galvanizing apparatus " from zinc pot surface, adopt type of heating on the semi-gas furnace, the zinc in the coating bath of bottom is heated by hot-plate.This upward heating technique thermo-efficiency is low, and zinc liquid surface oxidation causes the loss of zinc liquid, seldom is used at present.Last century the eighties, someone has invented the internal heating galvanized method, be exactly to insert in the zinc liquid with empty heating tube, thermal source is persistent fever in heating tube, mode by conduction conducts to heat in the zinc liquid of heating tube outside, usually heating tube adopts and is not made by the non-metallic material of liquid zinc corrosion, and it has good heat conductivity, and silicon carbide is exactly the first-selected starting material of heating tube in conjunction with silica material.
The thermal source of internal heating pipe uses electric heating element the earliest, mainly is that its control is simple, but is abandoned because cost is higher and heat that single heating element provides is limited.The internal heating zincincation of prior art adopts Sweet natural gas or liquefied petroleum gas (LPG) as heating fuel.The high temperature resistant heating tube (adopting carborudum tube usually) of a front end sealing is inserted in the galvanizing kettle, and light the combustion chamber that is admitted to after fuel gas and the air mixed in the heating tube, and waste gas returns out heating tube along the crack on the tube wall and discharges from flue.This heating fuel calorific value is stable, and easy to adjust, cost is low, is subjected to the welcome of zinc-plated enterprise, and the deficiency of existence is a source of the gas supply area limitation, or gas supply deficiency and combustion gas cost are high, influence enterprise's ordinary production.Though coal gas is industry and the domestic gas that generally uses at present, higher because of hydrogen richness in its composition, when being used for galvanizing flux internal heating technology, can produce large quantity of moisture in combustion processes, gather the heating tube inwall internal heating pipe is broken; In addition, because the hydrogen richness height, the possibility of detonation is bigger when igniting, also zinc liquid can be spilt when damaging heating tube and cause the life injury; The 3rd is that combustion gas purity is not enough, can cause combustion gas to control original paper automatically and lose efficacy.Cause coke-oven gas to fail in heating galvanizing liquid technology, to be applied for above-mentioned reasons always.
Summary of the invention
The present invention is directed to the deficiency that above-mentioned prior art exists, for opening up new thermal source fuel, at the application requiring of hot galvanizing liquid internal heating with fuel, developing a kind of is the galvanizing flux inner heating device of fuel with the coke-oven gas.
Of the present invention a kind of be the galvanizing flux inner heating device of fuel with the coke-oven gas, comprise the heating ceramic pipe, gas line in the heating ceramic pipe in combuster and the feeding combustion chamber, be connected to burner in the gas line end, it is characterized in that described gas line outside is with the ignitron that a front end shrinks, the ignitron outer cover has blast main, gapped between described ignitron and the blast main, this gap is an air passageways, the inlet end of described air passageways and extraneous air pipeline connection, the other end is communicated with the combustion chamber, is shaped on air inlet port on the tube wall of ignitron.
Described a kind of be the galvanizing flux inner heating device of fuel with the coke-oven gas, air inlet port wherein place the anterior burner of ignitron near, the ignitron front end shrinks and constitutes an ignition chamber that is communicated with the combustion chamber.
Described a kind of be the galvanizing flux inner heating device of fuel with the coke-oven gas, wherein be connected to gas electromagnetic valve on the outside gas line that is connected with gas line, be connected to the air magnetic valve on the extraneous air pipeline that is communicated with air passageways, connect a lighter for ignition on the burner, described gas electromagnetic valve, air magnetic valve and lighter for ignition are electrically connected with controller, and are controlled the time span and the ignition duration of its connecting and disconnecting by controller.
A kind of use with the method for coke-oven gas as the galvanizing flux inner heating device heating galvanizing liquid of fuel, wherein gas line and blast main be with the pulse mode opening and closing, and when each pulse action blast main always 1-2 second or time-delay 1-2 open or close second in advance.
The described use with the method for coke-oven gas as the galvanizing flux inner heating device heating galvanizing liquid of fuel is characterized in that comprising the steps:
A, be that the air of 5-10kpa and coke-oven gas that pressure is 3-12Kpa feed through blast main and gas line respectively and mix in the heating ceramic pipe and light with pressure, sustained combustion 10-20 closes gas line after second;
B, gas line are closed back blast main continuation air inlet 1-2 and are closed after second;
C, blast main off-interval 1-10 after second gas line and blast main open simultaneously and light once more, gas line continues to open 10-20 closed after second, blast main time-delay 1-2 closes second;
Described A-C step is carried out between heating period repeatedly at galvanizing flux, keeps the working temperature of galvanizing flux constant.
The described use with the method for coke-oven gas as the galvanizing flux inner heating device heating galvanizing liquid of fuel, wherein coke-oven gas and air feed in the heating ceramic pipe after the metering control metering in proportion.
Of the present invention a kind of be the galvanizing flux inner heating device of fuel with the coke-oven gas, gas line and blast main are set in the heating ceramic pipe, and the feeding amount by controller control combustion gas and air, feed respectively by preset proportion and to refire after mix the combustion chamber, avoided adjusting bad causing and firing because of hydrogen richness height in the coal gas causes sky, combustion ratio.Make and adopt coke-oven gas heating galvanizing liquid to become possibility.Of the present invention is the heating means employing pulsed heating of the galvanizing flux inner heating device of fuel with the coke-oven gas, and before each igniting or after the igniting, to use waste gas in the air purging vitrified pipe, and the mode of employing ignition chamber and combustion chamber relative separation, avoid the hydrogen detonation, guaranteed operational safety.
Description of drawings
Fig. 1 is a structural representation of the present invention
Fig. 2 is an ignition process synoptic diagram of the present invention
Fig. 3 is a combustion processes synoptic diagram of the present invention
Fig. 4 is the ignition pulse oscillogram of blast main time-delay closing
Fig. 5 is the ignition pulse oscillogram that blast main is opened in advance
The outside gas line 2-of the 1-stopping valve 3-gas electromagnetic valve 4-combustion gas reducing valve 5-lighter for ignition 6-smoke evacuation pipeline 7-gas line 8-ignitron 9-burner 10-11-of ignition chamber air reducing valve 12-extraneous air pipeline 13-air magnetic valve 14-ignition controller 15-waste gas crack 16-blast main 17-air inlet port 18-combustion chamber 19-air passageways 20-heating ceramic pipe among the figure
Embodiment
Below in conjunction with accompanying drawing to of the present invention a kind of be that the galvanizing flux inner heating device of fuel is described in detail with the coke-oven gas.
Shown in Figure 1, galvanizing flux inner heating device of the present invention, comprise a galvanizing flux internal heating vitrified pipe 20, an ignitron 8 is arranged in this vitrified pipe, coke-oven gas gas line 7 is installed in the ignitron 8, decorate the igntion wire sleeve pipe of live wire in the one side also has, gas line 7 front portions are connected to a burner 9.Outer cover at ignitron 8 is connected to blast main 16, and (gap) interlayer is wherein arranged between ignitron 8 and the blast main 16, and this interlayer constitutes air passageways 19.The front portion of air passageways 19 is communicated with combustion chamber 18.Be shaped on air inlet port 17 near near the burner 9 on the tube wall of ignitron 8.Blast main 16 is communicated with extraneous air pipeline 12, and externally airline 12 is provided with air reducing valve 11 and air magnetic valve 13.Gas line 7 is communicated with outside gas line 1, externally is connected to stopping valve 2, gas electromagnetic valve 3 and combustion gas reducing valve 4 on the gas line 1.Lighter for ignition 5 is connected with igntion wire, and the ignition end of igntion wire is fixed on the burner 9.Gas electromagnetic valve 3 and air magnetic valve 13 and lighter for ignition 5 and a controller 14 are connected all controlled device 14 controls of three by lead.
During first the igniting, controller 14 sends instruction, air magnetic valve 13 is opened, forced air enters blast main 16 through extraneous air pipeline 12, air reducing valve 11, and most of air enters the combustion chamber from air passageways 19 front ends, and the water vapor crack 15 along heating ceramic pipe 20 inwalls returns out from 6 emptyings of smoke evacuation pipeline then.This air that at first enters in the heating ceramic pipe is to remove inner remaining combustion gas and attached to the water vapor of inwall, the time length is 1-2 second.Ignition controller 14 instruction gas electromagnetic valves 3 are opened then, and this moment, two kinds of gases entered in the heating ceramic pipe 20 through gas line 7 and blast main 16 respectively by preset proportion.Combustion gas is from burner 9 ejection, ignition chamber 10 and the combustion gas mixing of air in the air inlet port 17 inlet point fire tubes 8 in a small amount, and at this moment, lighter for ignition 5 is accepted an instruction output kilovolt high voltage electric igniting combustion gas and Air mixing gas is lighted.Because the air that enters herein is less, is not enough to whole combustion gas are burnouted, but can consumes a large amount of hydrogen, thereby can reduce density of hydrogen, avoids taking place detonation.Unburned most of combustion gas enter in the anterior combustion chamber 18 and be the air mixed perfect combustion that blast main 16 enters through air passageways 19, combustion exhaust returns out through 6 emptyings of smoke evacuation pipeline along the waste gas crack 15 of heating ceramic pipe 20 inwalls.10-20 is after second in burning, and controller 14 sends instruction, closes gas electromagnetic valve 3, interrupts fuel gas supply.13 of air magnetic valves time-delay 1-2 closes second again, at this moment between in, forced air continues to enter in the heating ceramic pipe with firm waste gas after burning and attached to the water vapor of inboard wall of tube body and cleans away in managing.After arriving the setting cleaning time, air magnetic valve 13 cuts out.1-10 is after second at interval, and controller 14 instructs once more to be opened gas electromagnetic valve, air magnetic valve and light, and so cycle operation can keep the interior zinc liquid temperature error of galvanizing kettle/groove in ± 1 ℃.The combustion chamber inwall does not then have the water vapor that accumulates.
Above-mentioned air admission pressure is 5-10kpa; It is 3-12Kpa that combustion gas enters pressure; The adjustment that wherein enters the pressure size is to be calculated by specific routine in the controller according to coke-oven gas composition/calorific value and with AIR Proportional to adjust automatically.The present invention only relates to the hardware components of device.
Ignition process shown in Figure 2, high-pressure air purge removing to remaining coal gas, water vapor in ignition chamber 10, the combustion chamber 18 earlier, and purge time is by the control of controller 14 internal programs, 1-2 second or more 10 seconds kinds of as many as usually.After purging end, open gas electromagnetic valve 3 then, at this moment, coke-oven gas and air enter heating ceramic pipe 20 according to the ratio of setting, wherein in a small amount air is introduced in the ignition chamber 10 in the ignitron 8 with combustion gas mixing and is lighted, have only in a small amount combustion gas (coke-oven gas) to be lighted owing to enter that to light indoor air less this moment, and all the other combustion gas then enter 18 backs, combustion chamber and lighted.
During burning shown in Figure 3, flame enters combustion chamber 18 by ignition chamber 10, and the most of air that is entered combustion chamber 18 by blast main 16 anterior outlets also all burnouts with unburned most of combustion gas mixing.Waste gas after burning (carbonic acid gas and water) is discharged by crack 15 and smoke evacuation pipeline 6.Close the air that enters between the blast main time delay after the gas line remainder of exhaust gas in the heating ceramic pipe is blown out, avoid water vapour wherein to condense at the vitrified pipe inwall.
Shown in Figure 4, pulse firing controller 14 adopts square wave to control the incendiary time, and generally setting combustion time is 10-20 second, sets the different time value by the gas component difference; The blast main time-delay closing time is 1-2 second.
Shown in Figure 5, by adjusting controller 14, shift to an earlier date 1-2 when blast main is started at every turn and open second, the waste gas in the vitrified pipe is cleaned, open gas line then and light, sustained combustion 10-20 after second blast main and gas line close simultaneously.Itself and mode shown in Figure 4 have effect same.
The heating ceramic pipe is heated with coke-oven gas by above pulse heating mode, local temperature superelevation and water vapour are to ceramic pipe fracture in avoiding managing.Guaranteed the galvanizing flux homo(io)thermism.
Below be an application example of the present invention, the coal gas composition is as follows:
CO
2 2.6％；CmHn 1.8％；O
20.8％；CO 8.4％；CH
4 21.17％；
H
261.06%; N
24.17%; Operating process,
1, setting maximum impulse combustion time is 20 seconds, and stand-by time is 10 seconds, and the moisture that allows each burning produce is discharged heating tube to greatest extent, though frequent igniting has brought some side effects, can guarantee not cause the heating ceramic tracheal rupture because of gathering of moisture;
2, coal gas and air are sent into respectively in the burner, increase each prefiring prepurge, are controlled by sequence controller, open pressure lock earlier before each igniting action, send into air residual coal gas is cleaned out, the instantaneous AIR Proportional of lighting a fire is higher, does not have the quick-fried generation of ring;
3, various control original papers in the gas pipe are carried out the cleaning in per season, increase the filtering net and the replacing in every month of multi-pass.
To use over one year, the zinc liquid temperature control error reaches ± and 1 ℃, energy consumption level is very low, and heating tube and other thermal technology's original paper reach 1 year work-ing life.
Claims (6)
1. one kind is the galvanizing flux inner heating device of fuel with the coke-oven gas, comprise heating ceramic pipe (20), gas line (7) in combuster in the heating ceramic pipe (18) and the feeding combustion chamber, be connected to burner (9) in the gas line end, it is characterized in that described gas line (7) outside is with the ignitron (8) that a front end shrinks, ignitron (8) outer cover has blast main (16), gapped between described ignitron (8) and the blast main (16), this gap is air passageways (19), the inlet end of described air passageways (19) is communicated with extraneous air pipeline (12), the other end is communicated with combustion chamber (18), is shaped on air inlet port (17) on the tube wall of ignitron (8).
2. with the coke-oven gas galvanizing flux inner heating device of fuel according to a kind of of claim 1, it is characterized in that described air inlet port (17) place the anterior burner of ignitron (8) (9) near, ignitron (8) front end shrink to constitute an ignition chamber (10) that is communicated with combustion chamber (18).
3. with the coke-oven gas galvanizing flux inner heating device of fuel according to a kind of of claim 1 or 2, be connected to gas electromagnetic valve (3) on the outside gas line (1) that it is characterized in that being connected with gas line (7), with be connected to air magnetic valve (13) on the extraneous air pipeline (12) that air passageways (19) is communicated with, burner (9) is gone up and is connected a lighter for ignition (5), described gas electromagnetic valve (3), air magnetic valve (13) and lighter for ignition (5) are electrically connected with controller (14), and are controlled the time span and the ignition duration of its connecting and disconnecting by controller (14).
4. one kind is used among the claim 1-3 each described with the method for coke-oven gas as the galvanizing flux inner heating device heating galvanizing liquid of fuel, it is characterized in that gas line and blast main with the pulse mode opening and closing, and when each pulse action blast main always 1-2 second or time-delay 1-2 open or close second in advance.
5. according to the using of claim 4, it is characterized in that comprising the steps: with the method for coke-oven gas as the galvanizing flux inner heating device heating galvanizing liquid of fuel
A, be that the air of 5-10kpa and coke-oven gas that pressure is 3-12Kpa feed through blast main and gas line respectively and mix in the heating ceramic pipe and light with pressure, sustained combustion 10-20 closes gas line after second;
B, gas line are closed back blast main continuation air inlet 1-2 and are closed after second;
C, blast main off-interval 1-10 after second gas line and blast main open simultaneously and light once more, gas line continues to open 10-20 closed after second, blast main time-delay 1-2 closes second;
Described A-C step is carried out between heating period repeatedly at galvanizing flux, keeps the working temperature of galvanizing flux constant.
6. according to the using of claim 5, it is characterized in that described coke-oven gas and air feed in the heating ceramic pipe in proportion after the metering control metering with the method for coke-oven gas as the galvanizing flux inner heating device heating galvanizing liquid of fuel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101399576A CN101798668B (en) | 2010-04-02 | 2010-04-02 | Zinc-plating liquid internal heating device and heating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101399576A CN101798668B (en) | 2010-04-02 | 2010-04-02 | Zinc-plating liquid internal heating device and heating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101798668A true CN101798668A (en) | 2010-08-11 |
| CN101798668B CN101798668B (en) | 2012-01-25 |
Family
ID=42594510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101399576A Active CN101798668B (en) | 2010-04-02 | 2010-04-02 | Zinc-plating liquid internal heating device and heating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101798668B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506429A (en) * | 2011-11-07 | 2012-06-20 | 西安交通大学 | Immersed gas ceramic inner heater sleeve and preparation method thereof |
| CN104404422A (en) * | 2014-12-02 | 2015-03-11 | 无锡市新科冶金设备有限公司 | Preheating-type upwardly-heating steel wire zinc-plating furnace |
| CN108987765A (en) * | 2018-06-29 | 2018-12-11 | 张家港氢云新能源研究院有限公司 | Heating device in proton exchange film fuel cell electric piling |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1624188A (en) * | 2003-03-06 | 2005-06-08 | 攀枝花钢铁有限责任公司钢铁研究院 | Ultrathin coating hot galvanizing product production device |
| CN201284368Y (en) * | 2008-10-23 | 2009-08-05 | 宝山钢铁股份有限公司 | Edge heating device for alloying galvanizing plate |
| CN101603165A (en) * | 2009-07-27 | 2009-12-16 | 常熟华冶薄板有限公司 | The pressure adjusting device for radiation pipe of the process furnace during heat zinc coating plate is produced |
| CN201390777Y (en) * | 2008-08-01 | 2010-01-27 | 王青松 | Heating rod of internal heating type hot-dip galvanized device |
| CN201411483Y (en) * | 2009-04-01 | 2010-02-24 | 德阳东钢钢绳有限公司 | Heating device for hot dip galvanizing pot |
| CN201834961U (en) * | 2010-04-02 | 2011-05-18 | 山西榆次远大线材制品有限公司 | Galvanization liquid inside heating device using coke oven gas as fuel |
-
2010
- 2010-04-02 CN CN2010101399576A patent/CN101798668B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1624188A (en) * | 2003-03-06 | 2005-06-08 | 攀枝花钢铁有限责任公司钢铁研究院 | Ultrathin coating hot galvanizing product production device |
| CN201390777Y (en) * | 2008-08-01 | 2010-01-27 | 王青松 | Heating rod of internal heating type hot-dip galvanized device |
| CN201284368Y (en) * | 2008-10-23 | 2009-08-05 | 宝山钢铁股份有限公司 | Edge heating device for alloying galvanizing plate |
| CN201411483Y (en) * | 2009-04-01 | 2010-02-24 | 德阳东钢钢绳有限公司 | Heating device for hot dip galvanizing pot |
| CN101603165A (en) * | 2009-07-27 | 2009-12-16 | 常熟华冶薄板有限公司 | The pressure adjusting device for radiation pipe of the process furnace during heat zinc coating plate is produced |
| CN201834961U (en) * | 2010-04-02 | 2011-05-18 | 山西榆次远大线材制品有限公司 | Galvanization liquid inside heating device using coke oven gas as fuel |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506429A (en) * | 2011-11-07 | 2012-06-20 | 西安交通大学 | Immersed gas ceramic inner heater sleeve and preparation method thereof |
| CN102506429B (en) * | 2011-11-07 | 2013-12-04 | 西安交通大学 | Immersed gas ceramic inner heater sleeve and preparation method thereof |
| CN104404422A (en) * | 2014-12-02 | 2015-03-11 | 无锡市新科冶金设备有限公司 | Preheating-type upwardly-heating steel wire zinc-plating furnace |
| CN108987765A (en) * | 2018-06-29 | 2018-12-11 | 张家港氢云新能源研究院有限公司 | Heating device in proton exchange film fuel cell electric piling |
| CN108987765B (en) * | 2018-06-29 | 2023-12-15 | 张家港氢云新能源研究院有限公司 | Heating device in proton exchange membrane fuel cell stack |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101798668B (en) | 2012-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101576314B (en) | Ignition control system of tube furnace | |
| CN104449867B (en) | A kind of powdered coal pressuring gasified furnace igniting burner control method | |
| CN101798668B (en) | Zinc-plating liquid internal heating device and heating method | |
| CN103791493B (en) | Pulverized coal flame preheating fires system again | |
| CN201834961U (en) | Galvanization liquid inside heating device using coke oven gas as fuel | |
| CN105858649A (en) | Graphite high-temperature expanding furnace | |
| CN103968429A (en) | Efficient, energy-saving and environment-friendly gas combustion system | |
| CN204285540U (en) | A kind of high-power alcohol radical gasifying furnace head | |
| RU199334U1 (en) | BURNER DEVICE FOR ENVIRONMENTALLY CLEAN BOILER COMBINATION | |
| CN206768042U (en) | A kind of biomass gasifying furnace | |
| CN103773506B (en) | Double-cracking integrated furnace for biomasses | |
| CN210261635U (en) | Vertical heat recovery coke oven body | |
| CN208332256U (en) | Burner for oil and gas field | |
| CN203571799U (en) | Large biomass particles forming fuel cooking stove | |
| CN202281223U (en) | Control valve unit device for coal water slurry combustor | |
| CN108800203A (en) | The oil ignition system and method for circulating fluidized bed boiler | |
| CN204006000U (en) | A kind of ceramic shuttle kiln heat-accumulation combustor | |
| CN203798192U (en) | Drying furnace for anode steel claws | |
| CN110388642A (en) | A kind of burner | |
| CN200950008Y (en) | Control system for aluminum alloy gas insulation furnace | |
| CN110006059A (en) | Micro-gas combined pilot burner ignition system and method | |
| CN103453543B (en) | Water burning process | |
| CN212657716U (en) | High-efficient environmental protection burner | |
| CN206831499U (en) | Low pressure coke oven gas burner | |
| CN2253442Y (en) | Oil burning atmospheric hot-water steam boiler |
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 |