CN205101863U - Normal atmospheric temperature desulfurization system's natural gas long distance transportation , replacement system - Google Patents
Normal atmospheric temperature desulfurization system's natural gas long distance transportation , replacement system Download PDFInfo
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- CN205101863U CN205101863U CN201520882604.3U CN201520882604U CN205101863U CN 205101863 U CN205101863 U CN 205101863U CN 201520882604 U CN201520882604 U CN 201520882604U CN 205101863 U CN205101863 U CN 205101863U
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Abstract
The utility model discloses a normal atmospheric temperature desulfurization system's natural gas long distance transportation, replacement system, including normal atmospheric temperature desulfurization system, natural gas gas distribution station, collection trachea and air separation device, natural gas gas distribution station passes through natural gas line and links to each other with the collection trachea, at least, be equipped with two natural gas exports and at least one spare hole on the collection trachea, still be equipped with the atmospheric valve on the collection trachea, every natural gas export all links to each other with normal atmospheric temperature desulfurization system through the pipeline, be equipped with the governing valve with normal atmospheric temperature desulfurization system on the pipeline that every natural gas export links to each other, air separation device's nitrogen gas export links to each other with normal atmospheric temperature desulfurization system through the nitrogen gas pipeline, it links to each other with the tracheal spare hole of collection to set up a bleeder on the nitrogen gas pipeline, be equipped with the nitrogen valve on this bleeder, natural gas gas distribution station also is equipped with the atmospheric valve. The process the utility model discloses improve the back, direct nitrogen gas with normal atmospheric temperature desulfurization system air separation device is used for displacing the gas line compressor, does not need the exclusive use liquid nitrogen to heat, and convenient to use.
Description
Technical field
The utility model relates to a kind of rock gas long distance delivery, replacing system of normal temperature desulphurization system.
Background technique
The normal temperature desulphurization system of nitrogen fertilizer plant needs rock gas and nitrogen, and because chemical plant is generally located at remote, natural gas transmission pipeline is longer.The mode of movement of current employing is: from gas distribution station by natural gas tube to remittance tracheae, the tracheae that converges is divided into two arms again to normal temperature desulphurization system, and this Liang Ge branch is all provided with modulating valve, during production one open one standby.
Because pipeline is through long distance delivery, in use, unavoidably there is the situation that buried natural gas line is damaged by mechanical damage or have other user to need to connect the situation of arm.At this moment just need to carry out Maintenance and Repair to natural gas line.Needing the rock gas inside pipeline all to burn by releasing flare before maintenance natural gas line, then by nitrogen, pipeline to be replaced, replace and qualifiedly just can carry out maintenance of getting angry afterwards, require the pipeline section of damage to slice off, reinstall pipeline section.
The nitrogen substitute mode of current long distance delivery natural gas line is achieved in that closes the modulating valve of remittance tracheae to normal temperature desulphurization system, open the atmospheric valve at natural gas distribution station, take the spare nozzle above remittance tracheae apart, interim pipeline is installed be connected with spare nozzle, outsourcing liquid nitrogen transports to gas distribution station scene by tank car, liquid nitrogen becomes gas nitrogen by vaporizer heating, then remittance tracheae is added by interim pipeline, the nitrogen entering remittance tracheae oppositely enters long defeated natural gas line, finally discharge from natural gas distribution station blow-down pipe, after substitutability analysis is qualified, pipeline service work formally starts.
In this way displacement is carried out to long defeated natural gas line and there is following problem: because the nitrogen of displacement transports to scene with tank car in the mode of liquid nitrogen, liquid nitrogen must become gas nitrogen and just can add pipeline and carry out displacement work, and liquid nitrogen becomes gas nitrogen by vaporizer realizes, vaporizer is as liquid nitrogen heating plant, because its heating area is limited, liquid nitrogen heating become need in the process of gas nitrogen chronic, cause the time of nitrogen displacement pipeline also very long, have a strong impact on the repair time of long defeated natural gas line.
Model utility content
In order to solve the problems of the technologies described above, the utility model provides a kind of rock gas long distance delivery, replacing system of normal temperature desulphurization system easy to use.
To achieve these goals, the technical solution of the utility model is as follows: the rock gas long distance delivery of planting normal temperature desulphurization system, replacing system, comprise normal temperature desulphurization system, natural gas distribution station, remittance tracheae and air separation facility, described natural gas distribution station leads to long-distance natural gas line and is connected with remittance tracheae, it is characterized in that: described remittance tracheae is at least provided with two gas outlets and at least one mouth for subsequent use, described remittance tracheae is also provided with atmospheric valve, each gas outlet is all connected with normal temperature desulphurization system by pipeline, the pipeline that each gas outlet is connected with normal temperature desulphurization system is provided with modulating valve, the nitrogen outlet of described air separation facility is connected with normal temperature desulphurization system by nitrogen pipeline, described nitrogen pipeline is arranged a branched pipe to be connected with the mouth for subsequent use of remittance tracheae, this branched pipe is provided with nitrogen valve, described natural gas distribution station is also provided with atmospheric valve.
Adopt such scheme, if there is needs maintenance, close the modulating valve of remittance tracheae to normal temperature desulphurization system, open the atmospheric valve converged on tracheae, the natural gas vent of the inside is burnt to torch.Then open the nitrogen valve of the branched pipe in nitrogen tube, now, the atmospheric valve at natural gas distribution station is opened, and carries out nitrogen displacement to pipeline.Just can overhaul after replacing or connect arm.Make full use of the nitrogen of the air separation facility of normal temperature desulphurization system, save the energy and time that liquid nitrogen are heated to be nitrogen.
In such scheme: described remittance tracheae is provided with two gas outlets.A preparation and a use.
Beneficial effect: after the utility model improves, directly the nitrogen of normal temperature desulphurization system air separation facility is used for displacer gas pipeline, does not need to be used alone liquid nitrogen and heat, and easy to use.
Accompanying drawing explanation
Fig. 1 is process flow diagram of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Embodiment 1, as shown in Figure 1: rock gas long distance delivery, the replacing system of of the present utility model kind of normal temperature desulphurization system are made up of normal temperature desulphurization system 1, natural gas distribution station 2, the parts such as tracheae 3, air separation facility 4, nitrogen valve 5, modulating valve 6, atmospheric valve 7 that converge.
Natural gas distribution station 2 is provided with atmospheric valve 7, and natural gas distribution station 2 is connected with remittance tracheae 3 by natural gas line, and this natural gas line is long-distance pipe, reaches 30 kilometers as our company from natural gas distribution station 2 to the distance of pipeline of remittance tracheae 3.
Remittance tracheae 3 is at least provided with two gas outlets and at least one mouth for subsequent use, here two gas outlets are selected, a mouth for subsequent use, remittance tracheae 3 is also provided with atmospheric valve 7, each gas outlet is all connected with normal temperature desulphurization system 1 by pipeline, the pipeline that each gas outlet is connected with normal temperature desulphurization system 1 is provided with modulating valve 6, a preparation and a use.The nitrogen outlet of air separation facility 4 is connected with normal temperature desulphurization system 1 by nitrogen pipeline, nitrogen pipeline is arranged a branched pipe and is connected with the mouth for subsequent use of remittance tracheae 3, this branched pipe is provided with nitrogen valve 5.
When going wrong, modulating valve 6 cuts out, open the atmospheric valve 7 at remittance tracheae 3 and natural gas distribution station 2, the natural gas vent of the inside is burnt to torch, close the atmospheric valve 7 of remittance tracheae 3.Then opened by nitrogen valve 5, nitrogen is discharged from the atmospheric valve 7 at natural gas distribution station 2 through remittance tracheae 3, natural gas line (natural gas line converged between tracheae 3 and natural gas distribution station 2), the rock gas of displacement the inside.Just can construct after replacing.
The utility model is not limited to above-mentioned specific embodiment, should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to design of the present utility model without the need to creative work.In a word, all technician in the art according to design of the present utility model on the basis of existing technology by the available technological scheme of logical analysis, reasoning, or a limited experiment, all should by the determined protection domain of claims.
Claims (2)
1. the rock gas long distance delivery of a normal temperature desulphurization system, replacing system, comprise normal temperature desulphurization system, natural gas distribution station, remittance tracheae and air separation facility, described natural gas distribution station leads to long-distance natural gas line and is connected with remittance tracheae, it is characterized in that: described remittance tracheae is at least provided with two gas outlets and at least one mouth for subsequent use, described remittance tracheae is also provided with atmospheric valve, each gas outlet is all connected with normal temperature desulphurization system by pipeline, the pipeline that each gas outlet is connected with normal temperature desulphurization system is provided with modulating valve, the nitrogen outlet of described air separation facility is connected with normal temperature desulphurization system by nitrogen pipeline, described nitrogen pipeline is arranged a branched pipe to be connected with the mouth for subsequent use of remittance tracheae, this branched pipe is provided with nitrogen valve, described natural gas distribution station is also provided with atmospheric valve.
2. rock gas long distance delivery, the replacing system of normal temperature desulphurization system according to claim 1, is characterized in that: described remittance tracheae is provided with two gas outlets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520882604.3U CN205101863U (en) | 2015-11-09 | 2015-11-09 | Normal atmospheric temperature desulfurization system's natural gas long distance transportation , replacement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520882604.3U CN205101863U (en) | 2015-11-09 | 2015-11-09 | Normal atmospheric temperature desulfurization system's natural gas long distance transportation , replacement system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205101863U true CN205101863U (en) | 2016-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201520882604.3U Active CN205101863U (en) | 2015-11-09 | 2015-11-09 | Normal atmospheric temperature desulfurization system's natural gas long distance transportation , replacement system |
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| Country | Link |
|---|---|
| CN (1) | CN205101863U (en) |
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2015
- 2015-11-09 CN CN201520882604.3U patent/CN205101863U/en active Active
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