CN207350356U - Smoke-heating device for denitrating system - Google Patents
Smoke-heating device for denitrating system Download PDFInfo
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- CN207350356U CN207350356U CN201721342652.9U CN201721342652U CN207350356U CN 207350356 U CN207350356 U CN 207350356U CN 201721342652 U CN201721342652 U CN 201721342652U CN 207350356 U CN207350356 U CN 207350356U
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- combustion chamber
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- flue
- main pipeline
- fuel
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Abstract
The utility model discloses a kind of Smoke-heating device for denitrating system, main pipeline including being passed through fuel, main pipeline is sequentially connected combustion chamber and denitration flue, main pipeline is connected by gas burner with combustion chamber, further include the air-supply arrangement being connected with gas burner, device for pressure measurement is provided with the main pipeline, flow measurement device and regulating device, temperature measuring equipment is provided with the pipeline of combustion chamber and denitration flue, high-temperature flue gas is produced after burning to fuel using independent combustion chamber to mix with the low-temperature flue gas in denitration flue again, ensure the denitration temperature of flue gas in denitration flue with this；The stability that can preferably ensure to catch fire and burn using independent combustion chamber, and it is strong to heating fuel tolerance；The fuel of the utility model can be low-quality exhaust gas, on the one hand reduce the discharge of low-quality exhaust gas, avoid pollution air, on the other hand improve the utilization ratio of low-quality exhaust gas.
Description
Technical field
It the utility model is related to Smoke-heating device, especially a kind of Smoke-heating device for denitrating system.
Background technology
As country is to the pay attention to day by day of environmental issue, the industry such as coal chemical industry and steel plant faces increasing energy saving
Emission reduction, more containing NOx in the flue gas of its burning and exhausting, to avoid flue gas from directly polluting air, flue gas generally will be through
Denitration process is crossed to discharge again.In numerous denitration method for flue gas, most it is ripe it is most widely used be SCR (Selective
Catalytic Reduction) i.e. selective catalytic reduction.But this method has more stringent temperature limiting, flue gas temperature
For degree when between 300 DEG C to 420 DEG C, it is higher that it reduces the efficiency of NOx.The reason is that reducing agent (mainly NH3) needs be catalyzed
NOx could be reduced under the action of agent, and the active temperature range of catalyst is usually relatively narrow.For some steel plant or chemical industry
Factory, due to the difference of Btu utilization, the situation less than 300 DEG C often occurs in flue-gas temperature.In face of this case, many steels
Means are not tackled in factory or chemical plant well, are caused the flue gas of discharge exceeded, are influenced the normal operation of factory.Meanwhile mostly
Steel plant and chemical plant can produce the byproducts such as the relatively low fuel gas of quality, these byproducts are also a kind of pollutant, directly
Discharge will pollute air.Such as：Low-quality exhaust gas can be produced in combustion of coke and iron oxide, the master of these low-quality exhaust gas
It is blast furnace gas to want component, since these low-quality exhaust gas are free of NOx, it is not necessary to carry out denitration process, universal steel plant and
These low-quality exhaust gas are directly discharged to air by chemical plant, and air is caused directly to pollute.How these are effectively reduced
The discharge of low-quality exhaust gas and reuse these low-quality exhaust gas and become a great problem.
Utility model content
The utility model for solve how effectively using low-quality exhaust gas and in denitrating system ensure flue-gas temperature with
The problem of completing denitrating flue gas processing provides a kind of Smoke-heating device for denitrating system.
Technical solution is used by the utility model：For the Smoke-heating device of denitrating system, including it is passed through fuel
Main pipeline, main pipeline is sequentially connected combustion chamber and denitration flue, and main pipeline is connected with combustion chamber by gas burner, also wrapped
The air-supply arrangement being connected with gas burner is included, device for pressure measurement, flow measurement device and tune are provided with the main pipeline
Temperature measuring equipment is provided with the pipeline of regulating device, combustion chamber and denitration flue.Burnt using independent combustion chamber to fuel
High-temperature flue gas is produced afterwards to mix with the low-temperature flue gas in denitration flue again, ensures the temperature needed for denitrating flue gas with this；Using only
Vertical combustion chamber can preferably ensure the stability caught fire and burnt, and strong to heating fuel tolerance；According to temperature measuring equipment
The flue-gas temperature surveyed, regulating device adjusts the air inflow for spraying into the indoor fuel that burns, by regulating device to combustion chamber
The control of burning, preferably controls gas fume of combustion chamber amount and temperature.
The air-supply arrangement includes pressure fan and air supply duct, and pressure fan is connected by air supply duct with gas burner,
It is of simple structure and low cost.
Multiple floss holes goed deep into denitration flue are evenly arranged with the pipeline of combustion chamber and denitration flue, strengthen burning
The mixing of low-temperature flue gas in the high-temperature flue gas and denitration flue of room discharge.
Fuel is blast furnace gas, on the one hand reduces the discharge of low-quality exhaust gas, avoids pollution air, on the other hand improves
The utilization ratio of low-quality exhaust gas.
Fuel is the high quality gas such as methane, when factory does not produce low-quality exhaust gas, can use the high product such as methane
Matter gas is as fuel.
Inner Wall of Combustion Chamber is provided with refractory material, reduces scattering and disappearing for flue gas heat in combustion chamber.
The beneficial effects of the utility model are：The Smoke-heating device for denitrating system of the utility model is using independent
Combustion chamber burn to fuel after produce high-temperature flue gas mixed again with the low-temperature flue gas in denitration flue, denitration is ensured with this
The denitration temperature of flue gas in flue；The stability that can preferably ensure to catch fire and burn using independent combustion chamber, and pair plus
Hot fuel tolerance is strong；The fuel of the utility model can be low-quality exhaust gas, on the one hand reduce the discharge of low-quality exhaust gas, keep away
Exempt to pollute air, on the other hand improve the utilization ratio of low-quality exhaust gas.
Brief description of the drawings
Fig. 1 is the utility model structure diagram.
In figure mark for：1st, main pipeline；2nd, combustion chamber；3rd, denitration flue；4th, gas burner；5th, device for pressure measurement；
6th, flow measurement device；7th, regulating device；8th, temperature measuring equipment；9th, floss hole；10th, pressure fan；11st, air supply duct.
Embodiment
The utility model is further illustrated below in conjunction with the accompanying drawings.
As shown in Figure 1, the Smoke-heating device for denitrating system of the utility model, including it is passed through the main pipeline of fuel
1, the fuel is blast furnace gas, and 1 one end of main pipeline is connected with producing the exhaust piping of blast furnace gas, and the other end is sequentially connected combustion
Burn room 2 and denitration flue 3, main pipeline 1 are connected with combustion chamber 2 by gas burner 4, further include and be connected with gas burner 4
Air-supply arrangement, be provided with device for pressure measurement 5, flow measurement device 6 and regulating device 7, the burning on the main pipeline 1
Room 2 connects and is provided with temperature measuring equipment 8 on the pipeline of denitration flue 3；The air-supply arrangement includes pressure fan 10 and air supply duct 11,
Pressure fan 10 is connected by air supply duct 11 with gas burner 4；The combustion chamber 2 is connected on the pipeline of denitration flue 3 uniformly
It is provided with multiple floss holes 9 goed deep into denitration flue 3；2 wall of combustion chamber is provided with refractory material.
Claims (5)
1. the Smoke-heating device for denitrating system, it is characterised in that：Main pipeline (1) including being passed through fuel, main pipeline (1)
Combustion chamber (2) and denitration flue (3) are sequentially connected, main pipeline (1) is connected with combustion chamber (2) by gas burner (4), also wrapped
The air-supply arrangement being connected with gas burner (4) is included, device for pressure measurement (5), flow measurement are provided with the main pipeline (1)
Device (6) and regulating device (7), the combustion chamber (2) connect and are provided with temperature measuring equipment (8) on the pipeline of denitration flue (3).
2. it is used for the Smoke-heating device of denitrating system as claimed in claim 1, it is characterised in that：The air-supply arrangement includes
Pressure fan (10) and air supply duct (11), pressure fan (10) are connected by air supply duct (11) with gas burner (4).
3. it is used for the Smoke-heating device of denitrating system as claimed in claim 1, it is characterised in that：The combustion chamber (2) is even
Connect and multiple floss holes (9) goed deep into denitration flue (3) are evenly arranged with the pipeline of denitration flue (3).
4. it is used for the Smoke-heating device of denitrating system as claimed in claim 1, it is characterised in that：The fuel is blast furnace coal
Gas.
5. it is used for the Smoke-heating device of denitrating system as claimed in claim 1, it is characterised in that：In the combustion chamber (2)
Wall is provided with refractory material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721342652.9U CN207350356U (en) | 2017-10-18 | 2017-10-18 | Smoke-heating device for denitrating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721342652.9U CN207350356U (en) | 2017-10-18 | 2017-10-18 | Smoke-heating device for denitrating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207350356U true CN207350356U (en) | 2018-05-11 |
Family
ID=62355520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721342652.9U Active CN207350356U (en) | 2017-10-18 | 2017-10-18 | Smoke-heating device for denitrating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207350356U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109876659A (en) * | 2019-04-12 | 2019-06-14 | 西安西热锅炉环保工程有限公司 | A kind of low-temperature smoke air SCR denitrating system and its working method |
-
2017
- 2017-10-18 CN CN201721342652.9U patent/CN207350356U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109876659A (en) * | 2019-04-12 | 2019-06-14 | 西安西热锅炉环保工程有限公司 | A kind of low-temperature smoke air SCR denitrating system and its working method |
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