CN207153491U - A kind of device that fuel gas with low heat value is prepared with high heating value combustion gas and liquid nitrogen - Google Patents
A kind of device that fuel gas with low heat value is prepared with high heating value combustion gas and liquid nitrogen Download PDFInfo
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- CN207153491U CN207153491U CN201720921385.4U CN201720921385U CN207153491U CN 207153491 U CN207153491 U CN 207153491U CN 201720921385 U CN201720921385 U CN 201720921385U CN 207153491 U CN207153491 U CN 207153491U
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Abstract
A kind of hybrid system for making fuel gas with low heat value is the utility model is related to, to solve to be mixed with the high calorific value fuel gas and nitrogen such as liquefied petroleum gas, natural gas, be configured to the technical problem of the fuel gas with low heat value of experiment, belong to laboratory research technical field of auxiliary equipment.Its technical characteristic is gasified with liquid nitrogen in high heating value natural gas and liquid nitrogen container, is controlled respectively through flow, pressure valve group, both are well mixed with certain proportion into gas mixer, and the fuel gas with low heat value of required stable caloric value is made.The beneficial effects of the utility model：Material needed for mixing gas making device is abundant, apparatus structure is simple, gas continuous-stable processed, can automatically control.Development of the stable fuel gas with low heat value especially suitable for low-heat valve burner, there is extensive market application foreground.
Description
Technical field
It the utility model is related to a kind of hybrid system for making fuel gas with low heat value, more particularly to a kind of industrial liquefied petroleum
The high calorific value fuel gas such as gas, natural gas and nitrogen mixing, are configured to the hybrid system of the fuel gas with low heat value of experiment, and category laboratory is ground
Study carefully technical field of auxiliary equipment.
Background technology
With the expansion, steel enterprise, petroleum chemical enterprise, low heat value gas etc. of strict, the environmentally friendly scope of national environmental protection management
The system of atmosphere pollution limit row is incorporated, and emission limit is more and more lower.There is substantial amounts of, various low heat values in the market
Combustion gas, such as refinery tail gas, blast furnace gas, coke-stove gas, tail of semi coke, carbon black tail gas etc., high there is NOx emission, power consumption is big,
The problems such as burner rating difference is big, and type is difficult to standardization.Carbon black tail gas burner, NOx discharge are up to 1000mg/Nm3。
In addition, need to produce combustion-gas jet test low in calories, such burning with fuel gas with low heat value in industrial circles such as some food processings, drying
Device species is various widely used, but lack of targeted research.
Compared with high heating value burner, the calorific value of low heat value gas is from 400~5000kcal/Nm3, various in style, combustion
Burner producer is when carrying out the research and development of low-heat valve burner, it is difficult to which the combustion gas for obtaining user's actual use is tried
Test, the emission-reduction technology that burner uses is relatively backward, on the one hand producer can only use using user as researching and developing experimental field to actual
Family brings the no small time above and the waste in fund, another aspect also have impact on the matter of the performance of burner producer product
Amount, seriously govern the research and development process of low heat value low NO.
The content of the invention
Source of the gas when the utility model is in order to solve the problems, such as that said burner producer develops low-heat valve burner, there is provided a kind of
Based on high heating value gas and liquefaction nitrogen, the mixed of the stable fuel gas with low heat value of required calorific value is hybridly prepared into certain proportion
Close gas making device.
To reach above-mentioned purpose, adopt the technical scheme that：It is a kind of to prepare fuel gas with low heat value with high heating value gas and liquid nitrogen
Device, including high heating value gas air delivering pipeline, nitrogen air delivering pipeline and gas mixer, it is characterised in that：
The high heating value gas air delivering pipeline includes high heating value source of the gas, flowmeter, flow control valve, check-valves, successively pipeline
Series connection communicates；
The nitrogen air delivering pipeline include liquefaction nitrogen pot, over-pressure safety device, gasifier, pressure regulator valve, nitrogen stream gauge,
Nitrogen adjustment valve, nitrogen check-valves, successively pipeline series connection communicates successively；
The exporting of the high heating value gas air delivering pipeline, the outlet of the nitrogen air delivering pipeline fill with the gas mixing respectively
The import connection put communicates；The low heat value gas being hybridly prepared into the gas mixer exports defeated through the gas mixer
Deliver to the development that testing machine carries out low-heat valve burner.
The liquefaction nitrogen pot is industrial standard product built with high pressure low temperature liquid nitrogen, no calorific value, stable performance,
Safety.The gasifier is heat-exchanger rig, and the liquid nitrogen flowed out in liquefied pot absorbs outer by Pipeline transport to gasifier, gasifier
Boundary's temperature exchanges heat to liquid nitrogen so that liquid nitrogen gasification is nitrogen.Nitrogen pot, gasifier, pressure regulator valve and the nitrogen valve group of liquefying successively according to
Secondary pipeline is connected in series and communicated, described over-pressure safety device in the duct hypertonia when, pass through pressure release or cut-out nitrogen
Flowing, realizes the safeguard protection in nitrogen pipeline；Flowmeter, safety valve, flow control valve, check-valves are set, to realize difference
Safe class and degree of regulation；Valve group uses electric and pneumatic control, can be connected to control system, carries out system Intelligent adjustment
Control.
The beneficial effects of the utility model：A kind of mixing gas that fuel gas with low heat value is prepared with high heating value gas and liquid nitrogen fills
Put, utilize the low heat value gas required for liquid nitrogen and high heating value gas mixed preparing laboratory.Liquid nitrogen becomes stable after gasifier
Nitrogen, without calorific value；And high heating value gas has relatively fixed calorific value, as the calorific value of natural gas is generally 8500kcal/Nm3,
The calorific value of gaseous liquefied oil gas is generally 21000 kcal/kg.After both are uniformly mixed with certain proportion, with regard to it can be made needed for
Stable caloric value fuel gas with low heat value.Material needed for this mixing gas making device is abundant, apparatus structure is simple, gas continuous-stable processed,
Automatically control.Stable fuel gas with low heat value has extensive market application foreground, especially suitable for the development of low-heat valve burner,
Stable source of the gas is provided for the experiment of low-heat valve burner.
Brief description of the drawings
With reference to the accompanying drawings and examples, the utility model is described in further detail.
Fig. 1 is a kind of apparatus structure schematic diagram for preparing fuel gas with low heat value of the utility model.
In figure, 1- high heating value gas air delivering pipelines；11- high heating value sources of the gas；12- high heating value air valve groups；13- high heating value throughputs
Meter；14- high heating value air-flow adjustable valves；15- high heating value gas check-valves；2- nitrogen air delivering pipelines；21- liquefaction nitrogen pots；22- gas
Change device；25- over-pressure safety devices；23- pressure regulator valves；24- nitrogen valve groups；26- nitrogen stream gauge；27- nitrogen adjustment valves；28- nitrogen
Gas check-valves；3- gas mixers.
Embodiment
Fig. 1 is a kind of mixing arrangement structural representation for preparing fuel gas with low heat value of the utility model.From diagram：
A kind of device that fuel gas with low heat value is prepared with high heating value gas and liquid nitrogen, including high heating value gas air delivering pipeline 1, nitrogen are defeated
Air pipe 2 and gas mixer 3, it is characterised in that：
The high heating value gas air delivering pipeline 1 includes high heating value source of the gas 11, flowmeter 13, flow control valve 14, check-valves 15,
Pipeline is connected in series and communicated successively；
The nitrogen air delivering pipeline 2 includes liquefaction nitrogen pot 21, over-pressure safety device 25, gasifier 22, the and of pressure regulator valve 23
Nitrogen stream gauge 26, nitrogen adjustment valve 27, nitrogen check-valves 28, successively pipeline series connection communicates successively；
The exporting of the high heating value gas air delivering pipeline 1, the outlet of the nitrogen air delivering pipeline 2 respectively with the gas mixing
The import connection of device 3 communicates；The low heat value gas being hybridly prepared into the gas mixer 3 goes out through the gas mixer
Mouth is delivered to the development that testing machine carries out low-heat valve burner.
The nitrogen pot 21 that liquefies is a thermally insulated tank, and the inside is stored with subzero 210 ° or so, the liquid nitrogen for the shape that is in a liquid state.Gasifier
22 be a kind of device that can be by liquid nitrogen gasification for gaseous nitrogen atmosphere, and the nitrogen of high-pressure gaseous flows out from the outlet of gasifier 22.Gasification
Process is easily uncontrolled, and the gasification of a large amount of nitrogen easily causes pressure in pipeline and increased dramatically, cannot get pressure release easily occur it is quick-fried
It is fried.Be equipped with before the import of gasifier 22 over-pressure safety device 25 in the duct hypertonia when, pass through pressure release or cut-out nitrogen
Flowing, realize the safeguard protection in nitrogen pipeline；The outlet of gasifier 22 is connected with pressure regulator valve 23, nitrogen in adjustment system
Pressure value of the pressure to the stabilization of requirement of engineering.Nitrogen valve group 24 sets nitrogen stream gauge 26, nitrogen flow regulating valve 27, nitrogen
Check-valves 28, realize flow control, there is the function of Intelligent adjustment and safety cut-off, the flow of nitrogen in adjustable systems, and
When emergency occurs, the nitrogen in cutting system, the circulation of nitrogen is prevented.
High heating value air valve group 12 is by high heating value air-flow gauge 13, high heating value air-flow adjustable valve 14 and high heating value gas check-valves
15 compositions, realize security control accurate adjustment and the function of safety cut-off, system can increase according to demand or reduction system in it is high
The flow of calorific value gas, and when emergency occurs, the high heating value gas in cutting system, prevent the circulation of high heating value gas.
Nitrogen and high heating value gas are uniformly mixed with certain proportion by above-mentioned two systems in gas mixer 3, shape
Into mixed gas be the low-BTU gas of as stable caloric value, the low heat value gas can provide surely for the experiment of low heat value testing machine
Fixed source of the gas.
Claims (1)
1. a kind of device that fuel gas with low heat value is prepared with high heating value gas and liquid nitrogen, including high heating value gas air delivering pipeline, nitrogen gas transmission
Pipeline and gas mixer, it is characterised in that：
The high heating value gas air delivering pipeline includes high heating value source of the gas, flowmeter, flow control valve, check-valves, and pipeline is contacted successively
Connection communicates；
The nitrogen air delivering pipeline includes liquefaction nitrogen pot, over-pressure safety device, gasifier, pressure regulator valve, nitrogen stream gauge, nitrogen
Regulating valve and nitrogen check-valves, successively pipeline series connection communicates successively；
The exporting of the high heating value gas air delivering pipeline, the nitrogen air delivering pipeline outlet respectively with the gas mixer
Import connection communicates；The low heat value gas being hybridly prepared into the gas mixer is delivered to through gas mixer outlet
Testing machine carries out the development of low-heat valve burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720921385.4U CN207153491U (en) | 2017-07-27 | 2017-07-27 | A kind of device that fuel gas with low heat value is prepared with high heating value combustion gas and liquid nitrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720921385.4U CN207153491U (en) | 2017-07-27 | 2017-07-27 | A kind of device that fuel gas with low heat value is prepared with high heating value combustion gas and liquid nitrogen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207153491U true CN207153491U (en) | 2018-03-30 |
Family
ID=61714449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720921385.4U Active CN207153491U (en) | 2017-07-27 | 2017-07-27 | A kind of device that fuel gas with low heat value is prepared with high heating value combustion gas and liquid nitrogen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207153491U (en) |
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2017
- 2017-07-27 CN CN201720921385.4U patent/CN207153491U/en active Active
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