CN205533159U - Energy -conserving synthetic ammonia natural gas compression system - Google Patents
Energy -conserving synthetic ammonia natural gas compression system Download PDFInfo
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- CN205533159U CN205533159U CN201620064545.3U CN201620064545U CN205533159U CN 205533159 U CN205533159 U CN 205533159U CN 201620064545 U CN201620064545 U CN 201620064545U CN 205533159 U CN205533159 U CN 205533159U
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Abstract
The utility model discloses an energy -conserving synthetic ammonia natural gas compression system, the natural gas that comes out from normal atmospheric temperature desulphurization unit gets into natural gas inlet manifold, tell at least three air intake branch on the natural gas inlet manifold, the air inlet of every air intake branch and a natural gas compressor links to each other, the export of every natural gas compressor is given vent to anger house steward through air outlet pipe and the natural gas and is linked to each other, the import that house steward and high temperature desulphurization unit were given vent to anger to the natural gas links to each other, the air outlet pipe and the air intake branch of every natural gas compressor pass through loop pipe and link to each other, the last return valve that is equipped with of loop pipe, house steward is given vent to anger through always loop pipe and natural gas inlet manifold link to each other to the natural gas, set up automatic pressure regulating valve on total loop pipe, set up a by pass pipe around the automatic pressure regulating valve, set up manually -operated valve on air inlet the place ahead of by pass pipe and the total loop pipe at gas outlet rear, set up manually -operated valve on the by pass pipe. The feasible house steward's that gives vent to anger of ability automatic control pressure and flow fluctuation are little, reduce natural gas consumption.
Description
Technical field
This utility model relates to a kind of energy-conservation synthesis ammonia opening natural gas compression system, belongs to chemical process apparatus field.
Background technology
Nitrogen fertilizer plant's ammonia synthesis process main-process stream is: since from the natural gas of gas distribution station be raw material, by room temperature desulfurization, natural gas compressing, high temperature desulfurizing, one section of steam of heat exchange type converts, two-stage nitration oxygen-enriched air converts, carbon monoxide high and low temperature converts, and improves hot potash method decarburization, and methanation deep purifying removes remaining CO and CO2, synthesis gas compresses, ammonia synthesis under 14.0MPa, freeze and separate, finally give product liquefied ammonia.
Natural gas from gas distribution station controls to enter room temperature desulphurization system by pressure-regulating device after 1.1-1.2MPa gas pressure, natural gas point three by-pass lines after thick desulfurization respectively enter three natural gas compressor imports, after compressor compresses, natural gas is raised to 3.0-4.2MPa at compressor outlet manifold pressure, fine de-sulfur is carried out subsequently into high temperature desulfurizing, natural gas and from entering heat-exchanged reformer after the steam of the 3.0-4.2MPa of middle pressure steam house steward and secondary reformer carries out conversion reaction, reacted conversion gas enters back into shift conversion step after going out heat-exchanged reformer entrance conversion boiler heat exchange and carries out transformationreation.
Natural gas compressor is designed as three piston compressors, it is desirable to two compressors must be had to be compressed natural gas meeting the amount of natural gas needed for subsequent handling produces simultaneously.Every compressor is during compressed natural gas, and the control of compressor delivery pressure is all to be carried out by the loop that every compressor is individually designed.During actual production run; synthetic ammonia installation is frequently encountered situation about breaking down at fortune compressor; for ensureing the supply of natural gas; must start shipment the 3rd standby compressor stopping transport faulty compressor when simultaneously and just can ensure that the amount of natural gas needed for system production, the operation of guarantee production system is unaffected simultaneously.In the when of falling compressor, pressure and flow in order to control gas outlet house steward can not fluctuate excessive, must operate with two people simultaneously prepare stop transport this compressor and prepare to start shipment the return valve of this compressor own, the most also to require that the cooperation just suitable flow that just can ensure that export gas and the pressure of two people are in the range of Con trolling index, owing to being all manual operation, the technology of operator is required the highest by this, and the circuit switching that practical situation is two compressors often can not be harmonious, cause export gas pressure and flow rapid fluctuation, convert and subsequent handling also follows fluctuation, have a strong impact on the liquefied ammonia yield of device, the gas consumption of ton ammonia is significantly increased simultaneously.Owing to compressor natural gas circuit is manual operation, the labor intensity of field worker is the biggest.
Utility model content
In order to solve above-mentioned technical problem, this utility model provides a kind of energy-conservation synthesis ammonia opening natural gas compression system, in fault time of falling compressor, can realize automatically controlling the pressure so that the house steward that gives vent to anger and flowed fluctuation not quite, reduction gas consumption.
nullTo achieve these goals，The technical solution of the utility model is as follows: a kind of energy-conservation synthesis ammonia opening natural gas compression system，Including pressure-regulating device，Room temperature desulfurizer is entered after the natural gas via excess pressure adjusting means at natural gas distribution station，Natural gas inlet manifold is entered from room temperature desulfurizer natural gas out，At least three air intake branch is separated on described natural gas inlet manifold，The air inlet of each air intake branch and a natural gas compressor is connected，Air intake branch arranges air intake valve，The outlet of every natural gas compressor is connected by going out the gas branch pipe house steward that gives vent to anger with natural gas，The described natural gas house steward that gives vent to anger is connected with the import of high temperature desulfurizing device，Each go out to arrange drain tap on gas branch pipe，The gas branch pipe that goes out of each natural gas compressor is connected by loop pipe with air intake branch，Described loop pipe is provided with return valve，It is characterized in that: the described natural gas house steward that gives vent to anger is connected with natural gas inlet manifold by total loop pipe，On described total loop pipe, automatic pressure regulating valve is set，One shunt valve is set before and after described automatic pressure regulating valve，On the air inlet front of described shunt valve and the total loop pipe at rear, gas outlet, manually-operated gate is set，On described shunt valve, manually-operated gate is set.
Use such scheme, so when the time of falling machine of breaking down, control compressor by automatic pressure regulating valve and give vent to anger the pressure of house steward and flow, so that it is guaranteed that convert and the stablizing of subsequent handling production run.Reduce the gas consumption of ton ammonia, reach energy-saving and cost-reducing purpose, original compressor loop Non-follow control is changed into the auto-adjustment control of total loop pipe simultaneously, is effectively reduced the labor intensity of workman.One shunt valve is set before and after automatic pressure regulating valve, when automatic pressure regulating valve fault, manually regulation can be used.Meanwhile, retain the loop of compressor self, be substantially reduced outage rate, improve production efficiency.
In such scheme: described high temperature desulfurizing device natural gas out enters secondary reformer after the first heat exchange type changes stove heat exchange, after the second heat exchange type is changed stove and converted boiler, remove shift conversion step again from secondary reformer natural gas out.
In such scheme: described natural gas compressor is three, two to open one standby.
In such scheme: described natural gas compressor is piston compressor.
Beneficial effect: this utility model passes through workflow reengineering, first it is to efficiently solve natural gas compressor to give vent to anger in the time of falling machine the pressure of house steward and the situation of flowed fluctuation, ensure that conversion and follow-up producing process properly functioning, reduce the gas consumption of ton ammonia, reach energy-saving and cost-reducing purpose.Secondly, by workflow reengineering, original compressor loop Non-follow control is transform as outlet header loop auto-adjustment control, is effectively reduced the labor intensity of site operation personnel.
Accompanying drawing explanation
Fig. 1 is process chart of the present utility model.
Detailed description of the invention
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings:
Embodiment 1, as shown in Figure 1: energy-conservation synthesis ammonia opening natural gas compression system of the present utility model by pressure-regulating device 1, room temperature desulfurizer 2, natural gas inlet manifold 3, air intake branch 4, natural gas compressor 5, air intake valve 6, go out gas branch pipe 7, natural gas gives vent to anger house steward 8, high temperature desulfurizing device 9, drain tap 10, loop pipe 11, return valve 12, total loop pipe 13, automatic pressure regulating valve 14, shunt valve 15, manually-operated gate the 16, first heat exchange type conversion stove 17, secondary reformer the 18, second heat exchange type conversion stove 19, convert the parts such as boiler 20 and form.
Natural gas via excess pressure adjusting means 1 from natural gas distribution station, Stress control is entered after 1.1-1.2MPa room temperature desulfurizer 2, natural gas inlet manifold 3 is entered from room temperature desulfurizer 2 natural gas out, at least three air intake branch 4 is separated on natural gas inlet manifold 3, here three air intake branches 4 are selected, each air intake branch 4 is connected with the air inlet of a natural gas compressor 5, and natural gas compressor 5 is piston compressor.It is standby that three natural gas compressors 5 liang open one, air intake branch 4 arranges air intake valve 6, the outlet of every natural gas compressor 5 is connected by going out gas branch pipe 7 house steward 8 that gives vent to anger with natural gas, the natural gas house steward 8 that gives vent to anger is connected with the import of high temperature desulfurizing device 9, each go out to arrange drain tap 10 on gas branch pipe 7, the gas branch pipe 7 that goes out of each natural gas compressor 5 is connected by loop pipe 11 with air intake branch 4, and loop pipe 11 is provided with return valve 12, and return valve 12 is hand-operated valve.Give vent to anger house steward 8 of natural gas is connected with natural gas inlet manifold 3 by total loop pipe 13, automatic pressure regulating valve 14 is set on total loop pipe 13, before and after automatic pressure regulating valve 14, a shunt valve 15 is set, on the air inlet front of shunt valve 15 and the total loop pipe 13 at rear, gas outlet, manually-operated gate 16 is set, shunt valve 15 arranges manually-operated gate 16.
High temperature desulfurizing device 9 natural gas out enters secondary reformer 18 after the first heat exchange type changes stove 17 heat exchange, removes shift conversion step again from secondary reformer 18 natural gas out after the second heat exchange type is changed stove 19 and converted boiler 20 heat exchange.
This utility model is not limited to above-mentioned specific embodiment, it will 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 creative work.In a word, all technical staff in the art pass through the available technical scheme of logical analysis, reasoning, or a limited experiment on the basis of existing technology according to design of the present utility model, all should be in the protection domain being defined in the patent claims.
Claims (4)
- null1. an energy-conservation synthesis ammonia opening natural gas compression system，Including pressure-regulating device (1)，Natural gas via excess pressure adjusting means (1) from natural gas distribution station enters room temperature desulfurizer (2) afterwards，Natural gas inlet manifold (3) is entered from room temperature desulfurizer (2) natural gas out，At least three air intake branch (4) is separated on described natural gas inlet manifold (3)，Each air intake branch (4) is connected with the air inlet of a natural gas compressor (5)，Air intake branch (4) arranges air intake valve (6)，The outlet of every natural gas compressor (5) is connected by going out gas branch pipe (7) house steward (8) that gives vent to anger with natural gas，The described natural gas house steward (8) that gives vent to anger is connected with the import of high temperature desulfurizing device (9)，Each go out to arrange drain tap (10) on gas branch pipe (7)，The gas branch pipe (7) that goes out of each natural gas compressor (5) is connected by loop pipe (11) with air intake branch (4)，Described loop pipe (11) is provided with return valve (12)，It is characterized in that: the described natural gas house steward (8) that gives vent to anger is connected with natural gas inlet manifold (3) by total loop pipe (13)，On described total loop pipe (13), automatic pressure regulating valve (14) is set，Before and after described automatic pressure regulating valve (14), a shunt valve (15) is set，On the air inlet front of described shunt valve (15) and the total loop pipe (13) at rear, gas outlet, manually-operated gate (16) is set，Manually-operated gate (16) is set on described shunt valve (15).
- The most energy-conservation synthesis ammonia opening natural gas compression system, it is characterized in that: described high temperature desulfurizing device (9) natural gas out enters secondary reformer (18) after the first heat exchange type changes stove (17) heat exchange, after the second heat exchange type is changed stove (19) and converted boiler (20), remove shift conversion step again from secondary reformer (18) natural gas out.
- The most energy-conservation synthesis ammonia opening natural gas compression system, it is characterised in that: described natural gas compressor (5) is three, and two to open one standby.
- 4., according to synthesis ammonia opening natural gas compression system energy-conservation described in any one of claim 1-3, its feature exists: described natural gas compressor (5) is piston compressor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620064545.3U CN205533159U (en) | 2016-01-22 | 2016-01-22 | Energy -conserving synthetic ammonia natural gas compression system |
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| CN201620064545.3U CN205533159U (en) | 2016-01-22 | 2016-01-22 | Energy -conserving synthetic ammonia natural gas compression system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718836A (en) * | 2022-05-06 | 2022-07-08 | 成都市鑫三叶科技有限公司 | Natural gas multiplex condition compressor |
| CN115467830A (en) * | 2022-09-19 | 2022-12-13 | 上海齐耀螺杆机械有限公司 | Gas quantity adjusting device and method for two-stage screw compressor |
-
2016
- 2016-01-22 CN CN201620064545.3U patent/CN205533159U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718836A (en) * | 2022-05-06 | 2022-07-08 | 成都市鑫三叶科技有限公司 | Natural gas multiplex condition compressor |
| CN115467830A (en) * | 2022-09-19 | 2022-12-13 | 上海齐耀螺杆机械有限公司 | Gas quantity adjusting device and method for two-stage screw compressor |
| CN115467830B (en) * | 2022-09-19 | 2024-08-06 | 上海齐耀螺杆机械有限公司 | Gas flow regulating device and regulating method for two-stage screw compressor |
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