CN209279197U - Heating furnace mixed fuel air inlet device - Google Patents
Heating furnace mixed fuel air inlet device Download PDFInfo
- Publication number
- CN209279197U CN209279197U CN201821413292.1U CN201821413292U CN209279197U CN 209279197 U CN209279197 U CN 209279197U CN 201821413292 U CN201821413292 U CN 201821413292U CN 209279197 U CN209279197 U CN 209279197U
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- CN
- China
- Prior art keywords
- heating furnace
- low pressure
- air inlet
- natural gas
- admission line
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- 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.)
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Abstract
The utility model discloses a heating furnace mixed fuel gas inlet device, which comprises a fuel gas inlet pipeline, a natural gas inlet pipeline and a buffer tank, a low-pressure LPG inlet pipeline is connected on the air inlet of the heating furnace, a switching connecting pipeline is arranged between the low-pressure LPG inlet pipeline and the natural gas inlet pipeline, a communicating pipeline is arranged between the low-pressure LPG inlet pipeline and the heating furnace inlet pipeline, and the low-pressure LPG is partially or completely substituted for natural gas to heat by arranging a corresponding valve, thereby solving the situation of natural gas supply shortage in winter, because the low-pressure LPG has relatively high boiling point and contains a certain amount of methanol and dimethyl ether (DME), when the device is used in the area with low temperature in winter in the north, the pipeline carries liquid, at the moment, the low-pressure LPG and the mixed gas are switched without disturbance, and are switched to the natural gas mixed gas to heat, the risk that the main fire nozzle of the heating furnace is extinguished due to liquid carried in the pipeline when low-pressure LPG is used for heating is solved.
Description
Technical field
The utility model relates to a kind of heating furnaces, and in particular to a kind of heating furnace fuel combination inlet duct.
Background technique
Industrial heating furnace is one of the important equipment of chemical industry process units, plays in chemical industry and widely answers
With.Currently, furnace fuel is mainly the fuel gas based on methane, it is also the fuel gas and natural gas based on methane
Mixed gas.But natural gas supply amount usually has certain limitations, especially natural gas supply is nervous in winter, is easily easy to make
At halt production.
Utility model content
Purpose of the utility model is to solve the technical problems existing in the prior art, provide a kind of structure it is simple,
Winter natural gas supply anxiety situation can be alleviated and be able to achieve low pressure LPG and mix combustion with the heating furnace of mixed gas switching undisturbed
Expect inlet duct.
In order to achieve the above object, the utility model uses following technical scheme: a kind of heating furnace fuel combination air inlet dress
Set, including fuel gas admission line, natural gas air inlet pipe road and surge tank, the fuel gas admission line be equipped with fuel gas into
Atmospheric pressure table, the natural gas air inlet pipe road are equipped with natural gas boost gauge and regulating valve, the fuel gas admission line
It is connect respectively with the admission line of surge tank with natural gas air inlet pipe road, the admission line of the surge tank is mixed equipped with fuel
The outlet pipe of device, the surge tank is connect with low pressure flare pipeline, and the low pressure flare pipeline is equipped with low pressure flare valve, institute
The outlet pipe for stating surge tank is connected by the air inlet of heating furnace admission line and heating furnace, on the heating furnace admission line
Equipped with surge tank outlet flowmeter, low pressure LPG admission line, the low pressure LPG are also connected on the air inlet of the heating furnace
Admission line is equipped with low pressure LPG boost gauge and switching hand valve, between the low pressure LPG boost gauge and switching hand valve
Low pressure LPG admission line on be connected with switching connecting pipe, the other end of the switching connecting pipe connects natural gas air inlet
Natural gas air inlet pipe road between pressure gauge and regulating valve, the switching connecting pipe are equipped with first-hand valve and second-hand's valve,
Connecting pipe, the communicating pipe are connected on low pressure LPG admission line between the switching hand valve and the air inlet of heating furnace
Heating furnace admission line between the other end connection surge tank outlet flowmeter and the air inlet of heating furnace in road, the communicating pipe
Road is equipped with third hand valve and the 4th hand valve.
Further, the natural gas air inlet pipe road is equipped with the 5th hand valve and the 6th hand valve.
Further, the natural gas air inlet pipe road between the regulating valve and switching connecting pipe is equipped with gas discharge
Meter.
Further, the low pressure LPG admission line is equipped with the 7th hand valve and the 8th hand valve.
Further, it is set on the low pressure LPG admission line between the low pressure LPG boost gauge and switching connecting pipe
There is low pressure LPG inlet air flow meter.
The utility model has the advantages that the heating furnace fuel combination air inlet of the utility model compared with the prior art
Device is also connected on the air inlet of heating furnace low other than fuel gas admission line, natural gas air inlet pipe road and surge tank
LPG admission line is pressed, and the setting switching connecting pipe between low pressure LPG admission line and natural gas air inlet pipe road, in low pressure
Connecting pipe is provided between LPG admission line and heating furnace admission line, and by the way that corresponding valve is arranged, using low pressure
LPG partially or completely substitutes heated by natural gas, solves the situation of winter natural gas supply anxiety, due to low pressure LPG(low pressure liquid
Liquefied oil gas) be used as furnace fuel when, boiling point it is relatively high and wherein contain a certain amount of methanol and dimethyl ether (DME),
There are pipeline band liquid when the lower area of north of china in winter temperature uses, at this time by low pressure LPG and mixed gas switching undisturbed, switching
It is heated to natural oxygen mixture, solves the wind that pipeline causes the main nozzles of heating furnace to extinguish with liquid when heating using low pressure LPG
Danger.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
The utility model appended drawing reference meaning is as follows: 1, fuel gas admission line；2, natural gas air inlet pipe road；3, it buffers
Tank；4, fuel gas boost gauge；5, natural gas boost gauge；6, regulating valve；7, fuel mixer；8, low pressure flare pipe
Road；9, low pressure flare valve；10, heating furnace admission line；11, heating furnace；12, surge tank outlet flowmeter；13, low pressure LPG into
Feed channel；14, low pressure LPG boost gauge；15, switch hand valve；16, switch connecting pipe；17, first-hand valve；18, second-hand
Valve；19, connecting pipe；20, third hand valve；21, the 4th hand valve；22, the 5th hand valve；23, the 6th hand valve；24, gas discharge
Meter；25, the 7th hand valve；26, the 8th hand valve；27, low pressure LPG inlet air flow meter.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
As shown in Figure 1, a kind of heating furnace fuel combination inlet duct, including fuel gas admission line 1, natural gas air inlet pipe
Road 2 and surge tank 3, fuel gas admission line 1 are equipped with fuel gas boost gauge 4, and natural gas air inlet pipe road 2 is equipped with the 5th
Hand valve 22, the 6th hand valve 23, natural gas boost gauge 5 and regulating valve 6, fuel gas admission line 1 and natural gas air inlet pipe road 2
It is connect respectively with the admission line of surge tank 3, the admission line of surge tank 3 is equipped with fuel mixer 7, the outlet of surge tank 3
Pipeline is connect with low pressure flare pipeline 8, and low pressure flare pipeline 8 is equipped with low pressure flare valve 9, and the outlet pipe of surge tank 3 passes through
Heating furnace admission line 10 is connect with the air inlet of heating furnace 11, and heating furnace admission line 10 is equipped with surge tank outlet flowmeter
12, low pressure LPG admission line 13 is also connected on the air inlet of heating furnace 11, low pressure LPG admission line 13 is equipped with the 7th hand
Valve 25, the 8th hand valve 26, low pressure LPG boost gauge 14 and switching hand valve 15, low pressure LPG boost gauge 14 and switching hand valve
Switching connecting pipe 16 is connected on low pressure LPG admission line 13 between 15, the other end of switching connecting pipe 16 connects day
Natural gas air inlet pipe road 2 between right gas boost gauge 5 and regulating valve 6, the day between regulating valve 6 and switching connecting pipe 16
Right gas admission line 2 is equipped with natural gas flowmeter 24, low between low pressure LPG boost gauge 14 and switching connecting pipe 16
LPG admission line 13 is pressed to be equipped with low pressure LPG inlet air flow meter 27, switching connecting pipe 16 is equipped with first-hand valve 17 and second
Hand valve 18 switches and is connected with connecting pipe 19 on the low pressure LPG admission line 13 between hand valve 15 and the air inlet of heating furnace 11,
Heating furnace air inlet pipe between the other end connection surge tank outlet flowmeter 12 and the air inlet of heating furnace 11 of connecting pipe 19
Road 10, connecting pipe 19 are equipped with third hand valve 20 and the 4th hand valve 21.
In use, control fuel gas boost gauge 4, natural gas boost gauge 5, low pressure LPG boost gauge 14 are pressed
Power is 0.5MPa, closes the main nozzles valve of 11 air inlet of heating furnace, stops heating furnace 11 and runs, closes natural gas air inlet pipe
The 5th hand valve 22 and the 6th hand valve 23 on road 2 slightly drive the 7th hand valve 25 and the 8th hand valve on low pressure LPG admission line 13 into
26, switch the first-hand valve 17 and second-hand's valve 18 in connecting pipe 16, open simultaneously the low pressure flare on low pressure flare pipeline 8
Valve 9, replaces pipeline, and low pressure flare valve 9 is closed in displacement after five minutes, low pressure LPG load is adjusted, by low pressure LPG air inlet pressure
14 pressure of power table is controlled in 0.5MPa, and the main nozzles valve of 11 air inlet of heating furnace is lighted according to normal operation step and duty requirements
Door.
Claims (5)
1. a kind of heating furnace fuel combination inlet duct, including fuel gas admission line (1), natural gas air inlet pipe road (2) ease up
It rushes tank (3), the fuel gas admission line (1) is equipped with fuel gas boost gauge (4), the natural gas air inlet pipe road (2)
Equipped with natural gas boost gauge (5) and regulating valve (6), the fuel gas admission line (1) and natural gas air inlet pipe road (2)
It is connect respectively with the admission line of surge tank (3), the admission line of the surge tank (3) is equipped with fuel mixer (7), described
The outlet pipe of surge tank (3) is connect with low pressure flare pipeline (8), and the low pressure flare pipeline (8) is equipped with low pressure flare valve
(9), the outlet pipe of the surge tank (3) is connect by heating furnace admission line (10) with the air inlet of heating furnace (11), institute
Heating furnace admission line (10) are stated equipped with surge tank outlet flowmeter (12), it is characterised in that: the heating furnace (11) into
Low pressure LPG admission line (13) is also connected on port, the low pressure LPG admission line (13) is equipped with low pressure LPG air inlet pressure
Power table (14) and switching hand valve (15), the low pressure LPG boost gauge (14) with switch hand valve (15) between low pressure LPG into
Switching connecting pipe (16) is connected in feed channel (13), the other end of switching connecting pipe (16) connects natural gas air inlet
Natural gas air inlet pipe road (2) between pressure gauge (5) and regulating valve (6), the switching connecting pipe (16) are equipped with first-hand
Valve (17) and second-hand's valve (18), the low pressure LPG air inlet pipe between switching hand valve (15) and the air inlet of heating furnace (11)
Be connected on road (13) connecting pipe (19), the other end of the connecting pipe (19) connection surge tank outlet flowmeter (12) with
Heating furnace admission line (10) between the air inlet of heating furnace (11), the connecting pipe (19) are equipped with third hand valve (20)
With the 4th hand valve (21).
2. a kind of heating furnace fuel combination inlet duct according to claim 1, it is characterised in that: the natural gas air inlet
Pipeline (2) is equipped with the 5th hand valve (22) and the 6th hand valve (23).
3. a kind of heating furnace fuel combination inlet duct according to claim 1, it is characterised in that: the regulating valve (6)
Natural gas air inlet pipe road (2) between switching connecting pipe (16) is equipped with natural gas flowmeter (24).
4. a kind of heating furnace fuel combination inlet duct according to claim 1, it is characterised in that: the low pressure LPG into
Feed channel (13) is equipped with the 7th hand valve (25) and the 8th hand valve (26).
5. a kind of heating furnace fuel combination inlet duct according to claim 1, it is characterised in that: the low pressure LPG into
Low pressure LPG admission line (13) between atmospheric pressure table (14) and switching connecting pipe (16) is equipped with low pressure LPG charge flow rate
It counts (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821413292.1U CN209279197U (en) | 2018-08-30 | 2018-08-30 | Heating furnace mixed fuel air inlet device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821413292.1U CN209279197U (en) | 2018-08-30 | 2018-08-30 | Heating furnace mixed fuel air inlet device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209279197U true CN209279197U (en) | 2019-08-20 |
Family
ID=67598921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821413292.1U Active CN209279197U (en) | 2018-08-30 | 2018-08-30 | Heating furnace mixed fuel air inlet device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209279197U (en) |
-
2018
- 2018-08-30 CN CN201821413292.1U patent/CN209279197U/en active Active
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