CN208170372U - A kind of blending system based on heat storage type combustion - Google Patents
A kind of blending system based on heat storage type combustion Download PDFInfo
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- CN208170372U CN208170372U CN201820402841.9U CN201820402841U CN208170372U CN 208170372 U CN208170372 U CN 208170372U CN 201820402841 U CN201820402841 U CN 201820402841U CN 208170372 U CN208170372 U CN 208170372U
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Abstract
The blending system based on heat storage type combustion that the utility model relates to a kind of, set on the empty cigarette module or/and coal smoke module of regenerative combustion system, by extracting flue gas from the flue gas general pipeline of regenerative combustion system, and heating furnace is blown into from reversal valve, to making in heating furnace into oxygen deprivation state, the formation for inhibiting furnace high-temperature area, to reduce the amount of nitrogen oxides in flue gas.Meanwhile the application can be entered air existing for public domain or coal gas blowback in heating furnace by the flue gas of pumpback, not only save resource, but also reduce the content of coal gas and air in flue gas general pipeline, to further improve the safety coefficient of system.
Description
Technical field
The utility model relates to the environmental protection technology in heat storage type combustion field, in particular to one kind can reduce discharged nitrous oxides
, blending system based on heat storage type combustion.
Background technique
With the continuous propulsion of economic globalization, resource and environmental problem day aobvious protrusion, industrial furnace is as energy consumption
How rich and influential family carries out efficient, environmentally friendly power-saving technology as the most important thing as early as possible.Previous conventional combustion is using dividing wall type
Air themperature can be generally preheating to about 450 DEG C by waste heat recovery mode --- tubular metal heat exchanger, and flue gas exhaust gas temperature exists
300℃.However, the combustion system energy utilization rate is low, therefore regenerative combustion technology is quickly grown in recent years.
Regenerative combustion technology uses the direct heat exchange mode of suitching type, carries out waste heat recycling to greatest extent.Such as Fig. 1 exhibition
Shown a unit in regenerative combustion system, the two sides of heating furnace are symmetrically arranged with two groups of air inlets/smoke evacuation component, every group into
Gas/smoke evacuation component includes two burners, is respectively used to convey air and coal gas to heating furnace；In same unit, to two groups of air inlets/
The pipeline of input air passes through empty cigarette module reversal valve control in smoke evacuation component, inputs coal gas into two groups of air inlets/smoke evacuation component
Pipeline pass through coal smoke module reversal valve control；Each self-closing has flue gas pipeline on reversal valve at above-mentioned two, wherein empty cigarette module
Flue gas pipeline be connected to empty cigarette smoke explorer, the flue gas pipeline of coal smoke module is connected to coal smoke smoke explorer, empty cigarette smoke explorer
It is connected to corresponding chimney respectively with coal smoke smoke explorer；When side air inlet/smoke evacuation component to heating furnace input coal gas and
When air, air inlet/smoke evacuation component of the other side is by the flue gas emission in heating furnace to empty cigarette smoke explorer and coal smoke smoke explorer
In；Two groups of air inlets/smoke evacuation component is commutated by above-mentioned reversal valve, alternate run.
The heat storage type of regenerative combustion system is：Include heat storage in burner, when high-temperature flue gas is discharged through burner, stores
The heat absorption of hot body, makes flue gas be down to 150 DEG C or so, and normal temperature air, coal gas enter when entering heating furnace through burner, and heat storage is released can general
It is heated to 1000 DEG C or more.Therefore heat storage type combustion fundamentally improves the energy utilization rate of heating furnace, especially to low-heat
It is worth the reasonable utilization of fuel (such as blast furnace gas), had not only reduced the discharge of pollutant, but also saved the energy, and be to meet Current resource
With the advanced technology of environmental requirement.Meanwhile heat storage type combustion can strengthen the coal gas in heating furnace and recycle, in equiflux heater
Heating quality is improved in temperature field.
However, country has put into effect many policies and regulation in succession, for Air Pollutant Emission in order to control environmental pollution
Standard has national standard (GB 28665-2012), it is desirable that be 300mg/m3, also have the terrestrial reference for different regions, such as Beijing terrestrial reference
(DB11/501-2017), it is desirable that be 100mg/m3, such as Guangdong terrestrial reference (DB44/T 27-2001), it is desirable that be 120mg/m3；And
The discharged nitrous oxides of heat storage type combustion are generally in 400mg/m3More than, therefore reduce the discharge amount of the nitrogen oxides of heat storage type combustion
The problem of it is urgently to be resolved.Conventional solution is to collect the flue gas emitted, carries out denitration process by professional equipment, but
Which investment is big, operating cost is high.
Utility model content
The blending system based on heat storage type combustion that the purpose of this utility model is to provide a kind of, solves heat storage type combustion
The exceeded technical problem of discharged nitrous oxides in system.
To solve the above-mentioned problems, the technical solution of the utility model is：
A kind of blending system based on heat storage type combustion, set on the empty cigarette module or/and coal smoke mould of regenerative combustion system
Block, blending system include air extractor and distributor, and when blending to regenerative combustion system, the air extractor is from flue gas general pipeline
Middle extraction flue gas is sent into heating furnace by the distributor from into the side of air and combustion gas.
Preferably, the regenerative combustion system includes heating furnace and the air for controlling empty cigarette module, empty drift
Or the reversal valve that coal gas, the coal smoke of coal smoke module flow to, the gas outlet of the reversal valve are connected to heating furnace；The distributor connection
The gas outlet of the reversal valve.
Preferably, the air extractor is connect with the flue gas general pipeline by the first pipeline, the air extractor and distribution
Device is connected by the second pipeline, and the distributor is connected to the two sides of heating furnace by two third pipelines.
It preferably, further include the stop valve on first pipeline and second pipeline.
It preferably, further include the residual oxygen analytical instrument on the first pipeline.
Preferably, in the blending system of the coal smoke module further include safety line and in the upper safety line
Safety valve, the safety line both ends are separately connected the flue gas general pipeline of the second pipeline and coal smoke module, the safety valve with it is described
Residual oxygen analytical instrument linkage.
Preferably, Carbon Monoxide Detection device and the cutting of flow detector and linkage are equipped on each third pipeline
Regulating valve.
It preferably, further include shock-damping connector, the both ends of the air extractor pass through the shock-damping connector and respectively
One pipeline, the connection of the second pipeline.
Compared with the existing technology, the beneficial effect of the application is：
1, the side that the application is diluted air or/and coal gas using the flue gas in regenerative combustion system flue gas general pipeline
Formula is lowered into the concentration of the oxygen in heating furnace, and when air or coal gas enter heating furnace, the flue gas that pumpback enters heating furnace makes
At oxygen deprivation state in heating furnace, inhibit the formation in furnace high-temperature area, to reduce the amount of nitrogen oxides in flue gas.
2, distributor is connected to heating furnace by the gas outlet of the bottom of reversal valve, that is, blending system access public domain
End, therefore in blending, air existing for public domain or coal gas blowback can be entered heating furnace by flue gas by blending system
It is interior, resource is not only saved, but also reduce the content of coal gas and air in flue gas general pipeline, to further improve the safety of system
Coefficient.
3, the air inlet and air outlet of air extractor are accessed in blending system by shock-damping connector, and shock-damping connector can be
Bellows etc., to slow down the vibration in blending system, to further increase the safety of blending system.
Detailed description of the invention
Fig. 1 is the schematic diagram of regenerative combustion system in the prior art；
Fig. 2 is the blending system schematic of the application coal smoke module；
Fig. 3 is the regenerative combustion system of the application coal smoke module and the complete layout of blending system；
Fig. 4 is the blending system schematic of the application sky cigarette module；
Fig. 5 is the regenerative combustion system of the empty cigarette module of the application and the complete layout of blending system.
Wherein, 1, air extractor, 2, distributor, 3, stop valve, 4, residual oxygen analytical instrument, 5, shock-damping connector, 6, one oxidation
Carbon detection device, 7, cutting regulating valve, 8, flow detector, 9, flue gas general pipeline, 10, safety line, 11, safety valve, 12, the
One pipeline, the 13, second pipeline, 14, third pipeline.
Specific embodiment
Below in conjunction with attached drawing, lifts a specific embodiment and be described in detail.
A kind of blending system based on heat storage type combustion, set on the empty cigarette module or/and coal smoke mould of regenerative combustion system
Block, empty cigarette module and coal smoke module are connected on heating furnace each by the gas outlet of reversal valve, enable the cigarette of empty cigarette module
Gas general pipeline 9 is empty cigarette general pipeline, and empty cigarette module is used to drain into sky cigarette general pipeline to heating furnace input air or by the flue gas in heating furnace
In；Enabling the flue gas general pipeline 9 of coal smoke module is coal smoke general pipeline, and coal smoke module is used to input coal gas into heating furnace or will be in heating furnace
Flue gas drain into coal smoke general pipeline.The reversal valve of empty cigarette module is used to control the flow direction of air and empty cigarette module flue gas, coal smoke mould
The reversal valve of block is used to control the flow direction of the flue gas of coal gas and coal smoke module；In order to more clearly visible state blending system, below
The reversal valve of empty cigarette module and coal smoke module is all divided into two parts, the side A and the side B of heating furnace are respectively placed in, such as Fig. 2-5 institute
Show.
The blending system of the application includes air extractor 1 and distributor 2, as shown in figure 3, the air extractor 1 of coal smoke module
One end be connected on coal smoke general pipeline, the other end is connect with distributor 2, and two output ends of distributor 2 are respectively communicated with heating furnace
Burner of the two sides into coal gas.As shown in figure 5, one end of the air extractor 1 of empty cigarette module is connected on sky cigarette general pipeline, the other end with
The input terminal of distributor 2 connects, and two output ends of distributor 2 are respectively communicated on the burner into air of heating furnace two sides.?
When carrying out blending flue gas to regenerative combustion system according to system requirements, air extractor 1 is extracted from its corresponding flue gas general pipeline 9
Then flue gas is being inputted into the side of air and coal gas by distributor 2 from heating furnace.
The application is lowered into the air in heating furnace in such a way that gas medium is diluted air or/and coal gas
Concentration, to reduce oxygen concentration in heating furnace, i.e., when air and coal gas enter heating furnace, gas medium make in heating furnace at
Oxygen deprivation state inhibits the formation in furnace high-temperature area, to reduce the amount of nitrogen oxides in flue gas.Gas medium can be a variety of,
Using the flue gas in the flue gas general pipeline 9 of regenerative combustion system in the application, it is advantageous that, after flue gas reaches flue gas general pipeline 9
Temperature, oxygen content, remaining gas content are relatively low, are not likely to produce explosion danger in blending.In addition, if from heating furnace
Burner hearth in directly extract, since the temperature of flue gas in burner hearth is higher, and wherein doped with air, coal gas, thus blending when
Explosion danger is opposite big；Extraction flue gas is also undesirable in pipeline between heating furnace and flue gas general pipeline 9, this allows for storage
There are a public domains between reversal valve for the particularity of hot type combustion system, the i.e. burner of heating furnace, when the one of heating furnace
When side is by being converted into smoke evacuation into coal gas and air, there is also having coal gas and air in public domain, therefore, if from heating furnace and
Flue gas is extracted in pipeline between flue gas general pipeline 9, then drawing back the content phase of the air or coal gas that mix in the flue gas of heating furnace
To higher, therefore danger coefficient is larger, and flue gas is extracted from flue gas general pipeline 9, then the content phase of the air in flue gas or coal gas
To much lower, therefore from flue gas general pipeline 9 extract flue gas comparatively safety coefficient is much higher.
Specifically, consider the presence of above-mentioned public domain, in the application, distributor 2 pass through empty cigarette module reversal valve or
The gas outlet of the bottom of coal smoke module reversal valve is connected to heating furnace, that is, the end of blending system access public domain, therefore mixing
When mixed, blending system can be entered air existing for public domain or coal gas blowback in heating furnace by flue gas, and money has both been saved
Source, and the content of coal gas and air in flue gas general pipeline 9 is reduced, to further improve the safety coefficient of system.
Specifically, blending system hardware device between using pipeline be connected to, for the ease of statement, enable air extractor 1 with
Pipeline between flue gas general pipeline 9 is the connection of the first pipeline 12, and the pipeline between air extractor 1 and distributor 2 is the second pipeline 13
Connection, the pipeline between distributor 2 and heating furnace are third pipeline 14, it is clear that third pipeline 14 has two；In conjunction with above- mentioned information
It is found that the end of third pipeline 14 is connected to the reversal valve bottom of its respective side, and it is connected to its gas outlet.
As shown in Figure 2 and Figure 4, it is contemplated that the safety in emergency situations for blending system, in the air inlet of air extractor 1
Stop valve 3 is provided at mouthful and at gas outlet, by two timely cut-off loops of stop valve 3 when meeting emergency, thus really
The safety of insurance system.Two stop valves 3 are respectively provided on the first pipeline 12 and the second pipeline 13.
The safety of system when due to when oxygen content is excessively high in the flue gas of pumpback, influencing whether blending, therefore in the first pipeline
Residual oxygen analytical instrument 4 is provided on 12, for the oxygen content in Real Time Monitoring analysis flue gas, the position of residual oxygen analytical instrument 4 can
Between the stop valve 3 and air extractor 1 on the first pipeline 12, as shown in Figure 2 and Figure 4.In the blending system for being set to coal smoke module
In system, a safety line 10 is set on the second pipeline 13, the both ends of the safety line 10 are respectively communicated with flue gas general pipeline 9 and second
Pipeline 13 is equipped with safety valve 11 in safety line 10, which controls the on-off of safety line 10.Control aspect, coal
The residual oxygen analytical instrument 4 and safety valve 11 of cigarette module are linkage status, when residual oxygen analytical instrument 4 detects that the oxygen content in flue gas is not inconsistent
When conjunction requires, stop valve valve on the second pipeline is closed, safety valve 11 is opened, the flue gas that air extractor 1 is drawn back at this time directly from
Safety line 10 is back to flue gas general pipeline 9.
The Carbon Monoxide Detection device 6 and cutting that flow detector 8 and linkage are equipped on each third pipeline 14 are adjusted
Save valve 7.Carbon monoxide content in 6 real-time monitoring flue gas of Carbon Monoxide Detection device is cut when detected value exceeds preset range
Disconnected regulating valve 7 acts, and adjusts the flue gas flow of its corresponding third pipeline 14, so as to adjust the flue gas flow of blending system, separately
Outside, cutting regulating valve 7 can control the on-off of third pipeline 14.Flow detector 8 is for real-time monitoring and feedback third pipeline
14 flue gas flow.
In addition, air extractor 1 can be explosion-proof fan, vibration can be generated under working condition, in order to reduce the vibration to whole
The influence of a blending system is connected in air extractor 1 and the first pipeline 12 and 13 junction of the second pipeline using shock-damping connector 5
Connect, in the present embodiment the shock-damping connector 5 be bellows, the both ends of bellows respectively with air extractor 1 and the first pipeline 12 or
Second pipeline 13 is tightly connected, and the middle part of bellows is corrugated, the vibration of air extractor 1 can be absorbed, to greatly solve
The vibration of air extractor is transferred to the problem on other components, and then improves the safety of system, and bellows energy
Enough thermal expansions born in blending system.
It is above-mentioned that the application is stated in terms of physical structure, below in conjunction with Fig. 3 and Fig. 5 by workflow to this
Application is described further.For being set to the blending system of coal smoke module, when the side A, smoke evacuation closes to an end, the air inlet of heating furnace
When side and smoke evacuation side prepare to commutate, the smoke outlet of the side heating furnace A reversal valve is closed, then opens the connection heating of distributor 2
The delivery outlet of the side furnace A third pipeline 14, flue gas by the coal gas blowback in the coal gas side public domain of the side heating furnace A into heating furnace,
The gas port of the reversal valve of the side heating furnace A is opened after 1s, coal gas enters heating furnace and burns；When the side heating furnace A, burning will
At the end of, the gas port of the reversal valve of the side A is closed in place, the flue gas mouth of the side A reversal valve is reached into position, while distributor after 1s
14 delivery outlet of third pipeline of the 2 connection sides heating furnace A is closed.Certainly, air module is identical as the workflow of coal smoke module, therefore
The application does not repeat herein.
Disclosed above is only the specific embodiment of the application, and however, this application is not limited to this, any this field
Technical staff can think variation, should all fall in the protection domain of the application.
Claims (8)
1. a kind of blending system based on heat storage type combustion, which is characterized in that set on regenerative combustion system empty cigarette module or/
With coal smoke module, including air extractor and distributor, when blending to regenerative combustion system, the air extractor is from flue gas general pipeline
Middle extraction flue gas is sent into heating furnace by the distributor from into the side of air and combustion gas.
2. blending system as described in claim 1, which is characterized in that the regenerative combustion system includes heating furnace and is used for
Control the reversal valve that the air of empty cigarette module, the coal gas of empty drift or coal smoke module, coal smoke flow to, the outlet of the reversal valve
Mouth connection heating furnace；
The distributor is connected to the gas outlet of the reversal valve.
3. blending system as described in claim 1, which is characterized in that the air extractor and the flue gas general pipeline pass through first
Pipeline connection, the air extractor are connect with distributor by the second pipeline, and the distributor passes through two third pipeline connections
In the two sides of heating furnace.
4. blending system as claimed in claim 3, which is characterized in that further include set on first pipeline and second pipe
Stop valve on line.
5. blending system as claimed in claim 3, which is characterized in that further include the residual oxygen analytical instrument on the first pipeline.
6. blending system as claimed in claim 5, which is characterized in that further include safety in the blending system of the coal smoke module
Pipeline and the safety valve in the upper safety line, the safety line both ends are separately connected the second pipeline and coal smoke module
Flue gas general pipeline, the safety valve and the residual oxygen analytical instrument link.
7. blending system as claimed in claim 3, which is characterized in that be equipped on each third pipeline flow detector and
The Carbon Monoxide Detection device and cutting regulating valve of linkage, the cutting adjust the stream on its corresponding third pipeline of valve regulation
Amount.
8. blending system as claimed in claim 3, which is characterized in that it further include shock-damping connector, the two of the air extractor
End is connect by the shock-damping connector with the first pipeline, the second pipeline respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820402841.9U CN208170372U (en) | 2018-03-23 | 2018-03-23 | A kind of blending system based on heat storage type combustion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820402841.9U CN208170372U (en) | 2018-03-23 | 2018-03-23 | A kind of blending system based on heat storage type combustion |
Publications (1)
| Publication Number | Publication Date |
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| CN208170372U true CN208170372U (en) | 2018-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820402841.9U Active CN208170372U (en) | 2018-03-23 | 2018-03-23 | A kind of blending system based on heat storage type combustion |
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- 2018-03-23 CN CN201820402841.9U patent/CN208170372U/en active Active
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