CN208183009U - A kind of a variety of combustion-supporting gas regulation blowing systems of adjustable richness of double sleeve coal rifles - Google Patents
A kind of a variety of combustion-supporting gas regulation blowing systems of adjustable richness of double sleeve coal rifles Download PDFInfo
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- CN208183009U CN208183009U CN201820593360.0U CN201820593360U CN208183009U CN 208183009 U CN208183009 U CN 208183009U CN 201820593360 U CN201820593360 U CN 201820593360U CN 208183009 U CN208183009 U CN 208183009U
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Abstract
The utility model provides a kind of a variety of combustion-supporting gas regulation blowing systems of adjustable richness of double sleeve coal rifles, including blending tank, with mix tank connected combustion-supporting gas conveyance conduit, nitrogen gas delivery-line, triple valve, nitrogen delivery pipe road is provided with first pressure meter, first pressure regulating valve, first flowmeter, first flow regulating valve, first shut-off valve, second pressure meter is provided on combustion-supporting gas transfer pipeline, second pressure regulating valve, second flowmeter, second flow regulating valve, second shut-off valve, the outlet pipe of the blending tank has several, third flow control valve is provided in each, third flowmeter and third pressure gauge, double sleeve oxygen matchmaker's rifles connect coal dust delivery branch pipe, the coal dust delivery branch pipe is connect by distributor with coal dust delivery main, the beginning of the coal dust delivery main connects injection tank, it is described Coal dust regulating valve and tonifying Qi regulating valve are provided on coal dust delivery main.Blast furnace industrial and mineral keeps reasonably stability temperature, and Combustion Efficiency of Coal Powder improves.
Description
Technical field
The utility model belongs to metallurgy high furnace ironmaking technology field, and in particular to a kind of double adjustable richnesses of sleeve coal rifle are a variety of to be helped
Combustion gas body regulation blowing system.
Background technique
In recent ten years, China's steel industry is developed with higher speed, and the shortage of resource and the energy is to restrict China's refining
An important factor for iron industrial development.The task of China's steel industry is in the premise for reducing natural resources and energy consumption as far as possible
Under, keep the sustainable development of China's economic.Blast furnace ironmaking is energy consumption and the maximum link of discharge in entire steel process, this is
Caused by the substantive characteristics for pass through carbon deoxidation and reduction by blast furnace.With gradually in short supply, the coal tar difference in selling prices general of coking coal resource
It is gradually increased, coke dosage becomes the principal element for influencing ironmaking cost, and blast furnace blowing is still the current and following blast furnace section
The mainstream of coke consumption reduction.
Currently, blast furnace height is oxygen-enriched, high PCI rate is that blast furnace is effectively reduced coke consumption, reduces blast furnace energy consumption, improves blast furnace
The important technical of economic and technical norms, the blowing of stable and uniform have the various aspects such as energy-saving of ironmaking production extremely heavy
The meaning wanted: (1) oxygen-enriched raising coal combustion rate, fuel ratio decline, (2) are oxygen-enriched to improve calorific value of gas, and (3) oxygen-enriched promotion is high
Furnace hot metal output；Rich-oxygen of blast furnace can accelerate the combustion process of carbon before air port, improve theoretical temperature combustion, not only improve yield, but also
The shortcomings that compensating for the decline of theoretical temperature combustion caused by injecting coal quantity increase and oxygen surplus coefficient reduction, oxygen-enriched and coal injection is
Complementary technology.Well known state-of-the-art bf coal injection system is coal rifle injection technology, and coal rifle is double layer sleeve barrel rifle, inner cylinder blowing
Coal dust, the mixed gas of outer cylinder injecting oxygen and nitrogen, to improve a technology of Combustion Efficiency of Coal Powder.The prior art
Have the disadvantage that coke load raising causes gas permeability to be deteriorated due to being blown a large amount of fuel, due to oxygen-enriched, the combustion of air port theory
Burning temperature and increasing leads to the reduction of blast furnace industrial and mineral temperature with solid-gas ratio reduction.
Utility model content
The utility model provides a kind of a variety of combustion-supporting gas regulation blowing systems of adjustable richness of double sleeve coal rifles, blast furnace industrial and mineral
Reasonably stability temperature is kept, Combustion Efficiency of Coal Powder improves.
The a variety of combustion-supporting gas regulation blowing systems of the adjustable richness of double sleeve coal rifles provided by the utility model, including for storing
The blending tank of combustion-supporting gas and nitrogen mixed gas, and mixes tank connected combustion-supporting gas conveyance conduit, nitrogen gas delivery-line, and three
Port valve, the nitrogen delivery pipe road are provided with first pressure meter, first pressure regulating valve, first flowmeter, first flow tune
Valve, the first shut-off valve are saved, is provided with second pressure meter, second pressure regulating valve, second on the combustion-supporting gas transfer pipeline
First access of meter, second flow regulating valve, the second shut-off valve, the triple valve is connected to the outlet pipe of blending tank, institute
The alternate path for stating triple valve is connected to nitrogen gas delivery-line end, the third path of the triple valve and double sleeve oxygen coal guns
Inlet duct connection.On the basis of existing technology, the utility model further makes following improvement: the outlet of the blending tank
Pipeline has several, and third flow control valve, third flowmeter and third pressure gauge, double sleeves are provided in each
Oxygen matchmaker's rifle connects coal dust delivery branch pipe, and the coal dust delivery branch pipe is connect by distributor with coal dust delivery main, the coal dust
The beginning of delivery main connects injection tank, is provided with coal dust regulating valve and tonifying Qi regulating valve on the coal dust delivery main.
Preferably, third shut-off valve and the first pneumatic cut-off valve are provided in the initial end of the nitrogen gas delivery-line.
Preferably, the first thermometer is additionally provided in the nitrogen gas delivery-line.
Preferably, the first safety valve is additionally provided in the nitrogen gas delivery-line.
Preferably, be provided in the initial end of the combustion-supporting gas conveyance conduit the second manual stop valve, self-support regulating valve,
4th shut-off valve.
Preferably, hand off valve is additionally provided in the initial end of the combustion-supporting gas conveyance conduit.
Preferably, filter and the 5th shut-off valve are additionally provided on the combustion-supporting gas conveyance conduit.
Preferably, second temperature meter is additionally provided on the combustion-supporting gas conveyance conduit.
Preferably, the second safety valve is additionally provided on the combustion-supporting gas conveyance conduit.
Preferably, third safety valve and blowdown valve are provided on the blending tank.
The utility model has the beneficial effects that with the continuous improvement of combustion-supporting gas content, double sleeve coal rifles rich a variety of can be helped
Combustion gas body regulation blowing system produces a desired effect, and not only increases smelting strength of blast furnace and coal combustion rate, Ke Yiyou
Effect integrally improves high furnace temperature, and blast furnace industrial and mineral is made to keep reasonably stability temperature, and more reduction ironmaking production cost is laid
Basis, to realize that best production target creates condition.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model regulation blowing system.
Attached drawing mark:
1, blending tank, 2, combustion-supporting gas conveyance conduit, 3, nitrogen gas delivery-line, 4, triple valve, 5, first pressure meter, 6,
One pressure-regulating valve, 7, first flowmeter, 8, first flow regulating valve, the 9, first shut-off valve, 10, second pressure meter, 11, second
Pressure-regulating valve, 12, second flowmeter, 13, second flow regulating valve, the 14, second shut-off valve, 15, double sleeve oxygen coal guns, 16,
Third flow control valve, 17, third flowmeter, 18, third pressure gauge, 19, coal dust delivery branch pipe, 20, distributor, 21, coal dust
Delivery main, 22, injection tank, 23, coal dust regulating valve, 24, tonifying Qi regulating valve, 25, third shut-off valve, the 26, first pneumatic cutting
Valve, the 27, first thermometer, the 28, first safety valve, the 29, second pneumatic cut-off valve, 30, self-support regulating valve, the 31, the 4th shut-off valve,
32, hand off valve, 33, filter, the 34, the 5th shut-off valve, 35, second temperature meter, the 36, second safety valve, 37, third safety
Valve, 38, blowdown valve.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is used only for explaining
The utility model should not be understood as the restriction to the specific protection scope of the utility model.
Embodiment
Referring to Fig.1, a variety of combustion-supporting gas regulation blowing systems of the adjustable richness of double sleeve coal rifles, including it is combustion-supporting for storing
The blending tank 1 of gas and nitrogen mixed gas, the combustion-supporting gas conveyance conduit 2 being connect with blending tank 1, nitrogen gas delivery-line 3, three
Port valve 4 is provided with first pressure meter 5, first pressure regulating valve 6, first flowmeter 7, first-class in the nitrogen gas delivery-line 3
Adjustable valve 8, the first shut-off valve 9 are provided with second pressure meter 10 on the combustion-supporting gas conveyance conduit 2, second pressure is adjusted
Valve 11, second flowmeter 12, second flow regulating valve 13, the second shut-off valve 14, second pressure meter 10 and second in the present embodiment
Flowmeter 12 there are two, the first access of the triple valve 4 is connected to the outlet pipe of blending tank 1, the of the triple valve 4
Two accesses are connected to 3 end of nitrogen gas delivery-line, the inlet duct of the third path of the triple valve 4 and double sleeve oxygen coal guns 15
Connection.Further, the outlet pipe of the blending tank 1 has several, be provided in each third flow control valve 16,
Third flowmeter 17 and third pressure gauge 18, double sleeve oxygen matchmaker rifles 15 connect coal dust delivery branch pipe 19, the coal dust conveying
Branch pipe 19 is connect by distributor 20 with coal dust delivery main 21, and the beginning of the coal dust delivery main 21 connects injection tank 22,
Coal dust regulating valve 23 and tonifying Qi regulating valve 24 are provided on the coal dust delivery main 21.
Coal dust is transported to coal dust delivery main 21 by high pressure nitrogen by the injection tank 22, and the nitrogen is to injection tank
22 bottoms and tapering, which carry out vulcanization, prevents coal dust from blocking up tank, and the coal dust delivery main 21 installs coal dust regulating valve 23 and controls coal dust
Amount, the compressed air further give 21 ftercompction of coal dust delivery main by tonifying Qi regulating valve 24, by distributor 20 by coal dust
Coal dust in delivery main 21 is evenly distributed to coal dust delivery branch pipe 19, further coal dust delivery branch pipe 19 and double sleeve oxygen coal guns
15 connections, coal dust pass through double sleeve oxygen coal guns 15 and are ejected into blast furnace.
It can control by first flowmeter 7, first flow regulating valve 8 into the nitrogen amount in blending tank 1, pass through first
Pressure gauge 5, first pressure regulating valve 6, the first shut-off valve 9 make the pressure remained steady in nitrogen gas delivery-line 3；Pass through second
Meter 12, second flow regulating valve 13 can control into the combustion-supporting gas amount in blending tank 1, pass through second pressure meter 10,
Two pressure-regulating valves 11, the second shut-off valve 14 make the pressure remained steady in combustion-supporting gas conveyance conduit 2.
As a preferred embodiment of the present embodiment, third is provided in the initial end of the nitrogen gas delivery-line 3
Shut-off valve 25 and the first pneumatic cut-off valve 26.When abnormal conditions occurs in nitrogen, pneumatically cut by third shut-off valve 25 and first
Disconnected valve 26 can quickly cut off gas source.
As a preferred embodiment of the present embodiment, the first thermometer is additionally provided in the nitrogen gas delivery-line 3
27, for detecting nitrogen temperature.
As a preferred embodiment of the present embodiment, the first safety valve is additionally provided in the nitrogen gas delivery-line 3
28.When the pressure medium in blending tank 1, which increases, is more than specified value, 28 pressure release of the first safety valve is opened.
As a preferred embodiment of the present embodiment, it is provided in the initial end of the combustion-supporting gas conveyance conduit 2
Second pneumatic cut-off valve 29, self-support regulating valve 30, the 4th shut-off valve 31.When abnormal conditions occurs in combustion-supporting gas, pass through second
Pneumatic cut-off valve 29, self-support regulating valve 30, the 4th shut-off valve 31 can quickly cut off gas source.
As a preferred embodiment of the present embodiment, also set up in the initial end of the combustion-supporting gas conveyance conduit 2
There is hand off valve 32.When under 29 failure conditions of the second pneumatic cut-off valve use hand off valve 32 cut off gas source.
As a preferred embodiment of the present embodiment, filter is additionally provided on the combustion-supporting gas conveyance conduit 2
33 and the 5th shut-off valve 34.The filter 33 and the 5th shut-off valve 34 is used to eliminate the impurity in combustion-supporting gas, with protection
The normal use of valve and equipment.
As a preferred embodiment of the present embodiment, the second temperature is additionally provided on the combustion-supporting gas conveyance conduit 2
Degree meter 35.The second temperature meter 35 is used to detect the temperature of combustion-supporting gas.
As a preferred embodiment of the present embodiment, the second peace is additionally provided on the combustion-supporting gas conveyance conduit 2
Full valve 36.When the pressure medium in blending tank 1, which increases, is more than specified value, 36 pressure release of the second safety valve is opened.
As a preferred embodiment of the present embodiment, third safety valve 37 and blowdown are provided on the blending tank 1
Valve 38.When the pressure medium in blending tank 1, which increases, is more than specified value, 37 pressure release of third safety valve, the blowdown valve 38 are opened
The impurity in blending tank 1 can periodically be excluded.
Claims (10)
1. a kind of a variety of combustion-supporting gas regulation blowing systems of adjustable richness of double sleeve coal rifles, including for storing combustion-supporting gas and nitrogen
The blending tank of mixed gas, and mixes tank connected combustion-supporting gas conveyance conduit, nitrogen gas delivery-line, triple valve, the nitrogen
First pressure meter, first pressure regulating valve, first flowmeter, first flow regulating valve, the first cut-off are provided on transfer pipeline
Valve is provided with second pressure meter, second pressure regulating valve, second flowmeter, second flow on the combustion-supporting gas transfer pipeline
First access of regulating valve, the second shut-off valve, the triple valve is connected to the outlet pipe of blending tank, and the second of the triple valve
Access is connected to nitrogen gas delivery-line end, and the third path of the triple valve is connected to the inlet duct of double sleeve oxygen coal guns,
It is characterized by: the outlet pipe of the blending tank there are several, third flow control valve, third stream are provided in each
Meter and third pressure gauge, double sleeve oxygen matchmaker's rifles connect coal dust delivery branch pipe, and the coal dust delivery branch pipe passes through distributor
Delivery main connect with coal dust, and the beginning of the coal dust delivery main connects injection tank, is provided on the coal dust delivery main
Coal dust regulating valve and tonifying Qi regulating valve.
2. a variety of combustion-supporting gas regulation blowing systems of the adjustable richness of double sleeve coal rifles according to claim 1, it is characterised in that:
Third shut-off valve and the first pneumatic cut-off valve are provided in the initial end of the nitrogen gas delivery-line.
3. a variety of combustion-supporting gas regulation blowing systems of the adjustable richness of double sleeve coal rifles according to claim 1, it is characterised in that:
The first thermometer is additionally provided in the nitrogen gas delivery-line.
4. a variety of combustion-supporting gas regulation blowing systems of the adjustable richness of double sleeve coal rifles according to claim 1, it is characterised in that:
The first safety valve is additionally provided in the nitrogen gas delivery-line.
5. a variety of combustion-supporting gas regulation blowing systems of the adjustable richness of double sleeve coal rifles according to claim 1, it is characterised in that:
The second manual stop valve, self-support regulating valve, the 4th shut-off valve are provided in the initial end of the combustion-supporting gas conveyance conduit.
6. a variety of combustion-supporting gas regulation blowing systems of the adjustable richness of double sleeve coal rifles according to claim 5, it is characterised in that:
Hand off valve is additionally provided in the initial end of the combustion-supporting gas conveyance conduit.
7. a variety of combustion-supporting gas regulation blowing systems of the adjustable richness of double sleeve coal rifles according to claim 1, it is characterised in that:
Filter and the 5th shut-off valve are additionally provided on the combustion-supporting gas conveyance conduit.
8. a variety of combustion-supporting gas regulation blowing systems of the adjustable richness of double sleeve coal rifles according to claim 1, it is characterised in that:
Second temperature meter is additionally provided on the combustion-supporting gas conveyance conduit.
9. a variety of combustion-supporting gas regulation blowing systems of the adjustable richness of double sleeve coal rifles according to claim 1, it is characterised in that:
The second safety valve is additionally provided on the combustion-supporting gas conveyance conduit.
10. a variety of combustion-supporting gas regulation blowing systems of the adjustable richness of double sleeve coal rifles according to claim 1, feature exist
In: third safety valve and blowdown valve are provided on the blending tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820593360.0U CN208183009U (en) | 2018-04-25 | 2018-04-25 | A kind of a variety of combustion-supporting gas regulation blowing systems of adjustable richness of double sleeve coal rifles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820593360.0U CN208183009U (en) | 2018-04-25 | 2018-04-25 | A kind of a variety of combustion-supporting gas regulation blowing systems of adjustable richness of double sleeve coal rifles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208183009U true CN208183009U (en) | 2018-12-04 |
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ID=64434705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820593360.0U Active CN208183009U (en) | 2018-04-25 | 2018-04-25 | A kind of a variety of combustion-supporting gas regulation blowing systems of adjustable richness of double sleeve coal rifles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208183009U (en) |
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2018
- 2018-04-25 CN CN201820593360.0U patent/CN208183009U/en active Active
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