CN205151763U - Accurate control steam flow's natural gas steam hydrogen production system - Google Patents
Accurate control steam flow's natural gas steam hydrogen production system Download PDFInfo
- Publication number
- CN205151763U CN205151763U CN201520864825.8U CN201520864825U CN205151763U CN 205151763 U CN205151763 U CN 205151763U CN 201520864825 U CN201520864825 U CN 201520864825U CN 205151763 U CN205151763 U CN 205151763U
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- China
- Prior art keywords
- steam
- natural gas
- accurate control
- generating system
- hydrogen generating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The utility model relates to an accurate control steam flow's natural gas steam hydrogen production system, including the reborner in advance, reborner, hypermutation reactor, the pressure swing adsorption hydrogen plant that connect gradually, natural gas inlet pipe and in advance the entry of reborner link to each other, be provided with natural gas analysis appearance on the natural gas inlet pipe. Compared with the prior art, the utility model discloses total steam quantity is controlled in the steam volume according to each constitution needs to the constitution that utilizes natural gas on line analyzer to reach each component of the natural gas, and energy saving and emission reduction has been accomplished to effectual fuel economy quantity promptly, has guaranteed the needs of reaction again, protection boiler tube and catalyst.
Description
Technical field
The utility model relates to a kind of gas water steam hydrogen generating system, especially relates to a kind of gas water steam hydrogen generating system of accurate control steam flow.
Background technology
Gas water steam process for making hydrogen (SMR) development is comparatively ripe, existing SMR technique main flow is be mixed into pre reformer with first strand of water vapor after natural gas via hydrogenating desulfurization, many carbon alkanes generate hydrogen and carbon monoxide through pre-inversion, and then enter converter with second burst of vapor mixing, generate containing hydrogen, carbonic acid gas, the synthetic gas of the components such as carbon monoxide, it is carbonic acid gas by monoxide conversion that synthetic gas enters high change reactor again, hydrogen, after synthetic gas reclaims heat again, purified by PSA and obtain hydrogen, PSA tail gas returns converter burning and reclaims heat.
Gas water steam reforming reaction is reversible reaction of absorbing heat by force, and during reaction, system temperature is 720 DEG C ~ 870 DEG C, and uses resistant to elevated temperatures nickel-base catalyst catalysis, provides energy by gas-firing.In whole reaction process, the control of water vapor amount and important: 1, water vapor amount number directly have influence on molecular balance, water vapor at least methane etc. is unfavorable for reaction; 2, unnecessary water vapor circulates in systems in which and does not react, and needs a large amount of energy heats, affects the thermo-efficiency of device; 3, when device load is low, appropriate water vapor is introduced to take away unnecessary heat, protection boiler tube and catalyzer.
Consult related documents and also find that some technique needs to control steam flow according to the amount of Sweet natural gas, just control steam flow by fixed proportion.But the component of Sweet natural gas can fluctuate, water vapor amount can not change with gas component change, thus can not realize accurate control, is namely unfavorable for that enterprise is cost-saving, does not also meet the target of energy-saving and emission-reduction.Especially when running into that in Sweet natural gas, heavy constituent is more, then there will be the situation that water vapor amount is inadequate, thus affect reaction efficiency, affect the life-span of catalyzer.
Utility model content
The purpose of this utility model is exactly provide a kind of gas water steam hydrogen generating system of accurate control steam flow to overcome defect that above-mentioned prior art exists, utilize Sweet natural gas on line analyzer to draw the composition of each component of Sweet natural gas, control total steam consumption in the water vapor amount needed according to each composition.Do i.e. effective fuel economy consumption like this, accomplished energy-saving and emission-reduction, in turn ensure that the needs of reaction, protection boiler tube and catalyzer.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of gas water steam hydrogen generating system of accurate control steam flow, comprise connect successively pre reformer, converter, high become reactor, pressure swing adsorption hydrogen production device (PSA), natural gas feed pipe is connected with the entrance of pre reformer, and described natural gas feed pipe is provided with Natural Gas Analysis instrument.
Described Natural Gas Analysis instrument is chromatograph, is arranged on the oral area of feed-pipe, analyzes the moiety of the Sweet natural gas of charging.
The Sweet natural gas chromatograph of described chromatograph to be commercially available model be NG8200.
Described natural gas feed pipe is also provided with natural gas feed under meter.
The inlet mouth of described pre reformer and air outlet are respectively equipped with steam input pipe road.
Described steam input pipe road is provided with steam-flow meter and steam regulating valve.
The natural gas feed under meter that described steam-flow meter and steam regulating valve and natural gas feed pipe are arranged links and uses, and regulates the input of Sweet natural gas and steam.
The steam input pipe road being arranged on pre reformer inlet mouth inputs the minimum flow of steam needed for steam guarantee system.
Be arranged on the minimum calorific value needed for steam input pipe road input steam guarantee system of pre reformer air outlet.
Because the Sweet natural gas used is from outside, Sweet natural gas average composition 92%CH
4, 4%C
2h
6, 3%C
3h
8, 1%C
4h
10, be less than 1% C
5h
12, a small amount of S and N
2.Methane content can fluctuate between 88% to 94%, and other components also fluctuate thereupon, causes water vapor required in reaction process changing always.
Reaction equation: CH
4+ H2O → 3H2+CO-Q
C
2H
6+2H
2O→5H
2+2CO-Q
C
3H
8+3H
2O→3H
2+7CO-Q
C
4H
10+4H
2O→4H
2+9CO-Q
C
5H
12+5H
2O→5H
2+11CO-Q
CO+H
2O→H
2+CO
2+Q
As can be seen from above equation, the water molecules of often kind of alkane molecule needs is different, and each carbon atom only needs a water molecules to participate in reaction in the reaction, as long as total so draw in Sweet natural gas carbon atom amount can know and need how many water vapors.Coordinate two strands of steam flows in addition again, first strand of steam flow needs to ensure the minimum flow needed for all boiler tubes, and second strand of steam flow need ensure the minimum calorific value needed for stove, can realize accurate control.
Compared with prior art, the utility model has the following advantages:
1, present method can realize the accurate control of water vapor amount, reduces fuel consumption, cost-saving.
2, present method can protect boiler tube, effectively takes away heat, prevents the crooking of the tubes.
3, present method can guard catalyst, prevents water vapor very few, affects catalyst performance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, 1-pre reformer, 2-converter, 3-height becomes reactor, 4-pressure swing adsorption hydrogen production device, 5-natural gas feed under meter, 6-first steam-flow meter, 7-second steam-flow meter, 8-first steam regulating valve, 9-second steam regulating valve, 10-Natural Gas Analysis instrument.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Embodiment
A kind of gas water steam hydrogen generating system of accurate control steam flow, its structure as shown in Figure 1, comprise connect successively pre reformer 1, converter 2, high become reactor 3, pressure swing adsorption hydrogen production device 4, natural gas feed pipe is connected with the entrance of pre reformer 1, natural gas feed pipe is provided with Natural Gas Analysis instrument 10, in the present embodiment, model is used to be the chromatograph of NG8200, be arranged on the oral area of feed-pipe, analyze the moiety of the Sweet natural gas of charging, natural gas feed pipe is also provided with natural gas feed under meter 5.
Steam input pipe road is respectively equipped with at the inlet mouth of pre reformer 1 and air outlet.The steam input pipe road arranged is provided with the first steam-flow meter 6 and the first steam regulating valve 8 for inlet mouth, and the steam input pipe road that air outlet is arranged is provided with the second steam-flow meter 7 and the second steam regulating valve 9.Can link with the natural gas feed under meter 5 that arranges on natural gas feed pipe and use, regulate the input of Sweet natural gas and steam.
Because the Sweet natural gas used is from outside, Sweet natural gas average composition 92%CH
4, 4%C
2h
6, 3%C
3h
8, 1%C
4h
10, be less than 1% C
5h
12, a small amount of S and N
2.Methane content can fluctuate between 88% to 94%, and other components also fluctuate thereupon, causes water vapor required in reaction process changing always.
Reaction equation: CH
4+ H2O → 3H2+CO-Q
C
2H
6+2H
2O→5H
2+2CO-Q
C
3H
8+3H
2O→3H
2+7CO-Q
C
4H
10+4H
2O→4H
2+9CO-Q
C
5H
12+5H
2O→5H
2+11CO-Q
CO+H
2O→H
2+CO
2+Q
As can be seen from above equation, the water molecules of often kind of alkane molecule needs is different, and each carbon atom only needs a water molecules to participate in reaction in the reaction, as long as total so draw in Sweet natural gas carbon atom amount can know and need how many water vapors.Coordinate two strands of steam flows in addition again, first strand of steam flow that pre reformer opens 1 inlet mouth place needs to ensure the minimum flow needed for all boiler tubes, and second strand of steam flow in exit need ensure can realize accurate control by the minimum calorific value needed for stove.
The utility model utilizes Sweet natural gas on line analyzer to draw the composition of each component of Sweet natural gas, controls total steam consumption in the water vapor amount needed according to each composition.Do i.e. effective fuel economy consumption like this, accomplished energy-saving and emission-reduction, in turn ensure that the needs of reaction, protection boiler tube and catalyzer.
Claims (9)
1. one kind accurately controls the gas water steam hydrogen generating system of steam flow, comprise connect successively pre reformer, converter, high become reactor, pressure swing adsorption hydrogen production device, natural gas feed pipe is connected with the entrance of pre reformer, it is characterized in that, described natural gas feed pipe is provided with Natural Gas Analysis instrument.
2. the gas water steam hydrogen generating system of a kind of accurate control steam flow according to claim 1, it is characterized in that, described Natural Gas Analysis instrument is chromatograph, is arranged on the oral area of feed-pipe, analyzes the moiety of the Sweet natural gas of charging.
3. the gas water steam hydrogen generating system of a kind of accurate control steam flow according to claim 2, is characterized in that, the Sweet natural gas chromatograph of described chromatograph to be commercially available model be NG8200.
4. the gas water steam hydrogen generating system of a kind of accurate control steam flow according to any one of claim 1-3, is characterized in that, described natural gas feed pipe is also provided with natural gas feed under meter.
5. the gas water steam hydrogen generating system of a kind of accurate control steam flow according to claim 1, it is characterized in that, the inlet mouth of described pre reformer and air outlet are respectively equipped with steam input pipe road.
6. the gas water steam hydrogen generating system of a kind of accurate control steam flow according to claim 5, it is characterized in that, described steam input pipe road is provided with steam-flow meter and steam regulating valve.
7. the gas water steam hydrogen generating system of a kind of accurate control steam flow according to claim 6, it is characterized in that, the natural gas feed under meter that described steam-flow meter and steam regulating valve and natural gas feed pipe are arranged links and uses, and regulates the input of Sweet natural gas and steam.
8. the gas water steam hydrogen generating system of a kind of accurate control steam flow according to claim 5, is characterized in that, the steam input pipe road being arranged on pre reformer inlet mouth inputs the minimum flow of steam needed for steam guarantee system.
9. the gas water steam hydrogen generating system of a kind of accurate control steam flow according to claim 5, is characterized in that, is arranged on the minimum calorific value needed for steam input pipe road input steam guarantee system of pre reformer air outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520864825.8U CN205151763U (en) | 2015-11-02 | 2015-11-02 | Accurate control steam flow's natural gas steam hydrogen production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520864825.8U CN205151763U (en) | 2015-11-02 | 2015-11-02 | Accurate control steam flow's natural gas steam hydrogen production system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205151763U true CN205151763U (en) | 2016-04-13 |
Family
ID=55687479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520864825.8U Expired - Fee Related CN205151763U (en) | 2015-11-02 | 2015-11-02 | Accurate control steam flow's natural gas steam hydrogen production system |
Country Status (1)
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|---|---|
| CN (1) | CN205151763U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106629601A (en) * | 2015-11-02 | 2017-05-10 | 上海华林工业气体有限公司 | Methane steam reforming-based hydrogen production system with precise control of steam flow |
-
2015
- 2015-11-02 CN CN201520864825.8U patent/CN205151763U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106629601A (en) * | 2015-11-02 | 2017-05-10 | 上海华林工业气体有限公司 | Methane steam reforming-based hydrogen production system with precise control of steam flow |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20201102 |