CN217899866U - Multiple gas mixing device - Google Patents
Multiple gas mixing device Download PDFInfo
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- CN217899866U CN217899866U CN202221620759.6U CN202221620759U CN217899866U CN 217899866 U CN217899866 U CN 217899866U CN 202221620759 U CN202221620759 U CN 202221620759U CN 217899866 U CN217899866 U CN 217899866U
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Abstract
The utility model provides a multiple gas mixing arrangement solves and optimizes fuel gas output unstability, influence production, and unnecessary hydrogen does not utilize and extravagant problem realizes that multiple gas mixes and regards as fuel together to reach and utilize unnecessary waste gas, the purpose of stable production, effective energy and environmental protection simultaneously. The outlet of the natural gas inlet pipeline is connected with the inlet of the natural gas heating pressure regulating pipeline, and the outlet of the natural gas heating pressure regulating pipeline is connected with the inlet of the natural gas outlet pipeline; an electric heater and a pressure regulator are arranged on the natural gas heating and pressure regulating pipeline; the inlet of the hydrogen pipeline is connected with a hydrogen buffer tank; the inlet of the fuel gas pipeline is connected with a fuel gas buffer tank; the outlet of the natural gas outlet pipeline is connected with the natural gas inlet of the mixer, the outlet of the hydrogen pipeline is connected with the hydrogen inlet of the mixer, and the outlet of the fuel gas pipeline is connected with the fuel gas inlet of the mixer; the inlet of the gas mixing pipeline is connected with the gas mixing outlet of the mixer.
Description
Technical Field
The utility model relates to a multiple gas mixing arrangement for on the gas boiler.
Background
The fuel gas is an excess gas produced by a petrochemical ethylene plant, mainly contains 28% of hydrogen, 14% of air, 23% of methane, 16% of ethane, 10% of ethylene, 1% of propane and 5% of propylene, and is generally used as a fuel for a gas boiler. But the output of fuel gas is unstable and varies greatly, which causes the load variation of the gas boiler to be large and even blowing out, and influences the normal production; in addition, the hydrogen utilization rate of the methanol hydrogen production device is not high, and the redundant hydrogen is even burned by a torch, so that energy is wasted.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a multiple gas mixing arrangement that structural design is reasonable, solve and optimize fuel gas output unstability, influence production, unnecessary hydrogen does not utilize and extravagant problem, realizes that multiple gas mixes as fuel together to reach and utilize unnecessary waste gas, the purpose of stable production, effectively utilizing the energy and environmental protection simultaneously.
The utility model provides a technical scheme that above-mentioned problem adopted is: the utility model provides a multiple gas mixing arrangement which characterized in that: the device comprises a fuel gas inlet module, a hydrogen gas inlet module, a natural gas inlet module and a gas mixing module; the natural gas inlet module comprises a natural gas inlet pipeline, a natural gas heating pressure regulating pipeline and a natural gas outlet pipeline; the outlet of the natural gas inlet pipeline is connected with the inlet of the natural gas heating pressure regulating pipeline, and the outlet of the natural gas heating pressure regulating pipeline is connected with the inlet of the natural gas outlet pipeline; an electric heater and a pressure regulator are arranged on the natural gas heating and pressure regulating pipeline; the hydrogen gas inlet module comprises a hydrogen gas pipeline and a hydrogen buffer tank, and an inlet of the hydrogen gas pipeline is connected with the hydrogen buffer tank; the fuel gas inlet module comprises a fuel gas pipeline and a fuel gas buffer tank, and an inlet of the fuel gas pipeline is connected with the fuel gas buffer tank; the gas mixing module comprises a gas mixing pipeline and a mixer; the outlet of the natural gas outlet pipeline is connected with the natural gas inlet of the mixer, the outlet of the hydrogen pipeline is connected with the hydrogen inlet of the mixer, and the outlet of the fuel gas pipeline is connected with the fuel gas inlet of the mixer; the inlet of the gas mixing pipeline is connected with the gas mixing outlet of the mixer.
Advance the natural gas pipeline on install trip valve, pressure transmitter and temperature transmitter.
Natural gas heating pressure regulating pipeline include branch line one and branch line two, branch line one and the parallelly connected setting of branch line two, all install trip valve, electric heater, voltage regulator, flowmeter, natural gas flow control valve and pressure transmitter on branch line one and the branch line two.
Go out the natural gas pipeline on install check valve, pressure transmitter and temperature transmitter.
Hydrogen pipeline on install check valve, trip valve, pressure transmitter, temperature transmitter, air-vent valve, flowmeter and flow control valve.
The fuel gas buffer tank in install heating device, heating device is connected with the condensate tank.
Fuel gas pipeline on install check valve, trip valve, pressure transmitter, temperature transmitter, flowmeter and flow control valve.
The utility model discloses still including sweeping the nitrogen gas pipeline, the export that sweeps the nitrogen gas pipeline is connected with into natural gas pipeline, hydrogen pipeline, gas mixing pipeline, bypass pipeline and fuel gas buffer tank.
The utility model discloses still include the bypass pipeline, the import and the natural gas heating pressure regulating pipeline of bypass pipeline are connected, export and gas mixing pipe line connection.
Compared with the prior art, the utility model, have following advantage and effect: under the condition of ensuring the load of the gas-fired boiler on the whole, the waste fuel gas and the clean hydrogen are utilized, the load of the gas-fired boiler is met, the normal production is achieved, the carbon emission is reduced, the environmental protection policy is met, and the waste energy is fully utilized; the system optimizes a fuel gas supply system, can mix various different fuel gases, has reasonable design, economy and effectiveness, and gives consideration to green energy, environmental protection, economic benefit and operation safety.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
The embodiment of the utility model provides a include that the fuel gas admits air module, hydrogen admit air module, natural gas admit air module, mix gas module, bypass line 34 and sweep nitrogen gas pipeline 35.
The natural gas intake module comprises an incoming natural gas line 23, a natural gas heated pressure regulated line 24 and an outgoing natural gas line 25.
The inlet of the natural gas inlet pipeline 23 is used for connecting a natural gas pipeline of a plant area, the outlet of the natural gas inlet pipeline is connected with the inlet of the natural gas heating pressure regulating pipeline 24, and the outlet of the natural gas heating pressure regulating pipeline 24 is connected with the inlet of the natural gas outlet pipeline 25.
The natural gas inlet pipeline 23 is sequentially provided with a cut-off valve 1, a pressure transmitter and a temperature transmitter.
Natural gas heating pressure regulating pipeline 24 includes branch pipe line 24a and branch pipe line two 24b, branch pipe line 24a and the parallelly connected setting of branch pipe line two 24b, each other are reserve, all install trip valve 2 on branch pipe line 24a and the branch pipe line two 24b in proper order, electric heater 3, voltage regulator 4, safety bleeding valve 5, trip valve 6, flowmeter 7, natural gas flow control valve 8, pressure transmitter, the bleeding pipe, trip valve 10, setting through trip valve 2, which electric heater operation of optional, setting through trip valve 10, which pipeline operation of optional. Under the condition of insufficient fuel gas and hydrogen or fault states, natural gas is supplied through the two branch pipelines 24a and 24b which are mutually standby, so that the stable operation of the gas-fired boiler is ensured, and the production of the whole plant area is not influenced.
The natural gas of the plant natural gas pipeline enters a natural gas heating and pressure regulating pipeline 24 through a natural gas inlet pipeline 23, and the natural gas heating and pressure regulating pipeline is divided into two paths: the first branch pipeline 24a and the second branch pipeline 24b are provided with the stop valve 6 and the stop valve 10 respectively, and the first branch pipeline 24a and the second branch pipeline 24b are mutually standby to ensure switching.
The natural gas outlet pipeline 25 is sequentially provided with a check valve 9, a pressure transmitter and a temperature transmitter.
The hydrogen gas inlet module comprises a hydrogen gas line 26 and a hydrogen buffer tank 27.
The inlet of the hydrogen pipeline 26 is connected with a hydrogen buffer tank 27, and hydrogen of the hydrogen buffer tank 27 comes from the methanol hydrogen production device. The hydrogen line 26 is provided with a check valve 13, a shut-off valve 14, a manual shut-off valve 15, a pressure transmitter, a temperature transmitter, a pressure regulating valve 16, a safety relief valve, a shut-off valve 17, a safety relief valve, a flowmeter 19, a flow control valve 20, and a shut-off valve 21 in this order.
The fuel gas intake module includes a fuel gas line 28 and a fuel gas buffer tank 36.
The inlet of the fuel gas pipeline 28 is connected with a fuel gas buffer tank 36, the fuel gas of the fuel gas buffer tank 36 comes from an ethylene device, a heating device 18 is installed in the fuel gas buffer tank 36, the inlet of the heating device 18 is used for being connected with low-pressure steam in a plant area, a stop valve 12 is installed on the inlet of the heating device 18, and the outlet of the heating device 18 is connected with a condensed water tank 40. The fuel gas of the buffer tank 36 is heated by the low pressure steam of the plant.
The fuel gas line 28 is provided with a check valve 13, a shut-off valve 14, a safety relief valve, a pressure transmitter, a temperature transmitter, a flowmeter 41, a flow rate control valve 42, and a shut-off valve 43 in this order.
The gas mixing module comprises a gas mixing line 29 and a mixer 30.
The outlet of the natural gas outlet line 25 is connected to the natural gas inlet of the mixer 30, the outlet of the hydrogen line 26 is connected to the hydrogen inlet of the mixer 30, and the outlet of the fuel gas line 28 is connected to the fuel gas inlet of the mixer 30. The inlet of the gas mixing line 29 is connected to the gas mixing outlet of the mixer 30, and the outlet of the gas mixing line 29 is connected to the gas boiler.
The mixer 30 is provided with a safety valve 31 to prevent personal safety from being ensured accidentally.
The gas mixing pipeline 29 is provided with a heat value analyzer 32 and a component analyzer 33, the heat value analyzer 32 and the component analyzer 33 are interlocked with the flow regulating valve 42 of the fuel gas pipeline 28 and the flow regulating valve 20 of the hydrogen pipeline 26, and the interlocking controls the opening degrees of the flow regulating valve 20 and the flow regulating valve 42.
The gases of the hydrogen pipeline 26, the natural gas pipeline 25 and the fuel gas pipeline 28 enter a mixer 30, and the mixed gas which is uniformly mixed and output is sent to the boiler through a mixed gas pipeline 29 to be used as fuel.
The bypass line 34 has an inlet connected to the natural gas heating and pressure-regulating line 24 and an outlet connected to the mixed gas line 29. The natural gas in the natural gas heating and pressure regulating pipeline 24 can enter the gas mixing pipeline 29 through the bypass pipeline 34 when the gas mixing module fails, and then is sent to the gas using workshop for gas boiler combustion through the gas mixing pipeline 29.
The inlet of the purging nitrogen pipeline 35 is used for connecting a nitrogen pipeline of a factory, and the outlet is connected with the natural gas inlet pipeline 23, the hydrogen pipeline 26, the gas mixing pipeline 29, the bypass pipeline 34 and the fuel gas buffer tank 36 for purging.
The natural gas inlet line 23, the natural gas heating and pressure regulating line 24, the bypass line 34, the gas mixing line 29, the hydrogen line 26, the fuel gas line 28, the fuel gas buffer tank 36, and the hydrogen buffer tank 27 are all connected to the plant-side dispersion tower.
Before ignition or after use, the nitrogen in the purging nitrogen pipeline 35 is used for purging residual gas in each pipeline to the diffusing pipeline, and the residual gas uniformly enters the diffusing tower to be discharged.
The combustible gas monitoring system 38 is provided with a combustible gas monitoring probe and an alarm system at a position where combustible gas is easy to accumulate, and the positions and the number of the monitoring probes (with audible and visual alarms) are required to meet the requirements of covering a leakage monitoring area and guaranteeing personal equipment safety.
The fuel gas from the ethylene plant passes through the fuel gas buffer tank 36 and the fuel gas line 28 and enters the mixer 30; the second fuel hydrogen is taken out from the methanol hydrogen production device and enters the mixer 30 after passing through the hydrogen pipeline 26 and the hydrogen buffer tank 27; the third fuel natural gas is connected out from an external natural gas main pipe (the pressure is about 4.2 MPa), enters the natural gas inlet module and then enters the mixer 30; after mixing in the mixer 30, the fuel gas is supplied from the gas mixing line 29 to the gas boiler. In addition, a bypass line 34 is also provided to the gas boiler pipe after the gas mixer.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an example of the structure of the present invention. All the equivalent changes or simple changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model.
Claims (9)
1. The utility model provides a multiple gas mixing arrangement which characterized in that: the device comprises a fuel gas inlet module, a hydrogen gas inlet module, a natural gas inlet module and a gas mixing module; the natural gas inlet module comprises a natural gas inlet pipeline, a natural gas heating pressure regulating pipeline and a natural gas outlet pipeline; the outlet of the natural gas inlet pipeline is connected with the inlet of the natural gas heating pressure regulating pipeline, and the outlet of the natural gas heating pressure regulating pipeline is connected with the inlet of the natural gas outlet pipeline; an electric heater and a pressure regulator are arranged on the natural gas heating and pressure regulating pipeline; the hydrogen gas inlet module comprises a hydrogen gas pipeline and a hydrogen buffer tank, and an inlet of the hydrogen gas pipeline is connected with the hydrogen buffer tank; the fuel gas inlet module comprises a fuel gas pipeline and a fuel gas buffer tank, and an inlet of the fuel gas pipeline is connected with the fuel gas buffer tank; the gas mixing module comprises a gas mixing pipeline and a mixer; the outlet of the natural gas outlet pipeline is connected with the natural gas inlet of the mixer, the outlet of the hydrogen pipeline is connected with the hydrogen inlet of the mixer, and the outlet of the fuel gas pipeline is connected with the fuel gas inlet of the mixer; the inlet of the gas mixing pipeline is connected with the gas mixing outlet of the mixer.
2. The multiple gas mixing device of claim 1, wherein: the natural gas inlet pipeline is provided with a stop valve, a pressure transmitter and a temperature transmitter.
3. The multiple gas mixing device of claim 1, wherein: the natural gas heating and pressure regulating pipeline comprises a branch pipeline I and a branch pipeline II, wherein the branch pipeline I and the branch pipeline II are connected in parallel, and the branch pipeline I and the branch pipeline II are provided with a stop valve, an electric heater, a pressure regulator, a flowmeter, a natural gas flow regulating valve and a pressure transmitter.
4. The multiple gas mixing device of claim 1, wherein: and the natural gas outlet pipeline is provided with a check valve, a pressure transmitter and a temperature transmitter.
5. The multiple gas mixing device of claim 1, wherein: the hydrogen pipeline on install check valve, trip valve, pressure transmitter, temperature transmitter, air-vent valve, flowmeter and flow control valve.
6. The multiple gas mixing device of claim 1, wherein: the fuel gas buffer tank is internally provided with a heating device, and the heating device is connected with a condensed water tank.
7. The multiple gas mixing device of claim 1, wherein: the fuel gas pipeline on install check valve, trip valve, pressure transmitter, temperature transmitter, flowmeter and flow control valve.
8. The multiple gas mixing device of claim 1, wherein: the device also comprises a purging nitrogen pipeline, and the outlet of the purging nitrogen pipeline is connected with the natural gas inlet pipeline, the hydrogen pipeline, the mixed gas pipeline, the bypass pipeline and the fuel gas buffer tank.
9. The multiple gas mixing device of claim 1, wherein: the natural gas heating and pressure regulating pipeline is characterized by further comprising a bypass pipeline, wherein the inlet of the bypass pipeline is connected with the natural gas heating and pressure regulating pipeline, and the outlet of the bypass pipeline is connected with the gas mixing pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221620759.6U CN217899866U (en) | 2022-06-27 | 2022-06-27 | Multiple gas mixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221620759.6U CN217899866U (en) | 2022-06-27 | 2022-06-27 | Multiple gas mixing device |
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| Publication Number | Publication Date |
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| CN217899866U true CN217899866U (en) | 2022-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202221620759.6U Active CN217899866U (en) | 2022-06-27 | 2022-06-27 | Multiple gas mixing device |
Country Status (1)
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| CN (1) | CN217899866U (en) |
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- 2022-06-27 CN CN202221620759.6U patent/CN217899866U/en active Active
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