CN108584872A - The safe shutdown protective device of hydrogen making by natural gas reformation system - Google Patents
The safe shutdown protective device of hydrogen making by natural gas reformation system Download PDFInfo
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- CN108584872A CN108584872A CN201810627184.2A CN201810627184A CN108584872A CN 108584872 A CN108584872 A CN 108584872A CN 201810627184 A CN201810627184 A CN 201810627184A CN 108584872 A CN108584872 A CN 108584872A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
- C01B3/34—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
- C01B3/48—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents followed by reaction of water vapour with carbon monoxide
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
- C01B3/34—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
- C01B3/38—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
- C01B3/56—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with solids; Regeneration of used solids
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/02—Processes for making hydrogen or synthesis gas
- C01B2203/0205—Processes for making hydrogen or synthesis gas containing a reforming step
- C01B2203/0227—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step
- C01B2203/0233—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step the reforming step being a steam reforming step
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/02—Processes for making hydrogen or synthesis gas
- C01B2203/0283—Processes for making hydrogen or synthesis gas containing a CO-shift step, i.e. a water gas shift step
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
- C01B2203/042—Purification by adsorption on solids
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/12—Feeding the process for making hydrogen or synthesis gas
- C01B2203/1205—Composition of the feed
- C01B2203/1211—Organic compounds or organic mixtures used in the process for making hydrogen or synthesis gas
- C01B2203/1235—Hydrocarbons
- C01B2203/1241—Natural gas or methane
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/12—Feeding the process for making hydrogen or synthesis gas
- C01B2203/1258—Pre-treatment of the feed
- C01B2203/1264—Catalytic pre-treatment of the feed
- C01B2203/127—Catalytic desulfurisation
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/16—Controlling the process
- C01B2203/1609—Shutting down the process
Abstract
The invention discloses a kind of safe shutdown protective devices of hydrogen making by natural gas reformation system, including：Inertial gas tank is respectively arranged with the first, second, third inert gas electric flow control valve on the first, second, third inert gas efferent duct on inertial gas tank；The natural gas main valve being arranged on natural gas transportation manifold；It is arranged and diffuses pipeline with diffusion valve in desulfurization mechanism input terminal, and the pressure gauge on every desulfurization pipeline, diffusion valve and pressure gauge on reformer desorption tube road are set, diffusion valve and pressure gauge on the carbon monoxide converter desorption tube road of carbon monoxide converter are set；Pressure fan on equipment installation shell is set.The advantage of the invention is that：In stopping process with high safety, it is filled with inert gas into reformer, carbon monoxide converter, desulfurization mechanism, to be protected to catalyst, this can effectively prevent contaminated catalysts, to be effectively saved production cost.
Description
Technical field
The present invention relates to hydrogen making by natural gas reformation production technical fields.
Background technology
The structure of current hydrogen making by natural gas reformation system includes mainly：Mounted on equipment install shell in reformer,
Carbon monoxide converter, pressure swing adsorber are connected with a pair of of buffer reservoir on reformer --- burning natural gas buffer reservoir
It is connected with natural gas transportation manifold with the input terminal of reaction natural gas buffer reservoir, a pair of of buffer reservoir, raw material is natural
Gas is inputted by natural gas transportation manifold, the output end of burning natural gas buffer reservoir and the firing tip phase in the shell of reformer
Connection, reaction are connected by desulfurization mechanism with the reactor in reformer with the output end of natural gas buffer reservoir；Reformer
On be additionally provided with vapor input pipe and air intake duct, vapor input pipe is connected with the reactor in reformer, air
Air inlet pipe is connected with the enclosure interior of reformer, and the output end of reformer is connected with carbon monoxide converter, carbon monoxide
The output end of converter is connected to pressure swing adsorber.
It often will appear the relatively low event of finished hydrogen purity during the hydrogen manufacturing of current hydrogen making by natural gas reformation system
Barrier, hydrogen gas leakage failure, primary reformation gas ingredient abnormal failure, conversion gas ingredient abnormal failure etc., the failure of these failures is former
Because of complexity, troubleshooting is usually required for repairing after shutting down repeatedly, and releases failure.But occur shutting down every time just will appear
Catalyst in reformer, carbon monoxide converter, desulfurization mechanism is contaminated phenomenon, and trouble shooting rear catalyst can not continue
It uses, to cause economic loss.
Invention content
The purpose of the present invention is：A kind of safe stopping for the hydrogen making by natural gas reformation system that can prevent contaminated catalysts is provided
Machine protective device.
To achieve the above object, the technical solution adopted by the present invention is：The safe shutdown of hydrogen making by natural gas reformation system is protected
Protection unit, including：Inertial gas tank is provided with the first inert gas efferent duct, the second inert gas on inertial gas tank
Efferent duct, third inert gas efferent duct, the first inert gas efferent duct, the second inert gas efferent duct, third inert gas
Efferent duct is respectively communicated to reformer, carbon monoxide converter, desulfurization mechanism, and first is provided on the first inert gas efferent duct
Be provided on inert gas electric flow control valve, the second inert gas efferent duct the second inert gas electric flow control valve,
Third inert gas electric flow control valve is provided on third inert gas efferent duct；It is arranged on natural gas transportation manifold
Natural gas main valve；Pipeline is diffused in the desulfurization being arranged in desulfurization mechanism input terminal, and desulfurization desorption tube road is provided with desulfurization diffusion valve,
It is both provided with desulfurization loine pressure table on every desulfurization pipeline in desulfurization mechanism；The reformer being arranged on reformer diffuses
Pipeline, reformer desorption tube road is provided with reformer diffusion valve and reformer diffuses pressure gauge, and setting is converted in carbon monoxide
Carbon monoxide converter on device diffuses pipeline, and carbon monoxide converter desorption tube road is provided with carbon monoxide converter and diffuses
Valve and carbon monoxide converter diffuse pressure gauge；Pressure fan on equipment installation shell is set；Safe shutdown protective device
The step of shutdown with high safety includes：The first step closes the natural gas main valve on natural gas transportation manifold；Second step opens weight
Whole device diffusion valve, desulfurization diffusion valve, forces fan at carbon monoxide converter diffusion valve；Third walks, and opens the first inert gas electricity
Dynamic flow control valve, the second inert gas electric flow control valve, third inert gas electric flow control valve so that indifferent gas
Body storage tank is filled with inert gas in the reactor into reformer, carbon monoxide converter, desulfurization mechanism respectively, to reforming
Catalyst in device in reactor, in carbon monoxide converter and in desulfurization mechanism is protected, and reformer is subsequently closed
Diffusion valve, carbon monoxide converter diffusion valve, desulfurization diffusion valve, turn off later the first inert gas electric flow control valve,
Second inert gas electric flow control valve, third inert gas electric flow control valve, to stop being filled with inert gas；The
Four steps close the production control system software of hydrogen making by natural gas reformation system, are then shut off power supply.
Further, the safe shutdown protective device of hydrogen making by natural gas reformation system above-mentioned, wherein further include at signal
Control module is managed, signal processing control module includes PLC and computer, the first inert gas electric flow control valve, second lazy
Property gas electric flow control valve, third inert gas electric flow control valve, natural gas main valve, desulfurization diffusion valve and desulfurization pipe
Road pressure gauge, reformer diffusion valve and reformer diffuse pressure gauge, carbon monoxide converter diffusion valve and carbon monoxide converter
It diffuses pressure gauge, fan is forced to be connect with plc communication, computer controls the first inert gas electric flow by PLC and adjusts
Valve, the second inert gas electric flow control valve, third inert gas electric flow control valve, natural gas main valve, desulfurization are diffused
Valve, reformer diffusion valve, carbon monoxide converter diffuse valve events.
Further, the safe shutdown protective device of hydrogen making by natural gas reformation system above-mentioned, wherein further include circuit prison
Measurement equipment and stand-by power supply, circuit monitoring equipment is arranged in the power supply way circuit of hydrogen making by natural gas reformation system, to supervise
The break-make of power supply way circuit is surveyed, circuit monitoring equipment is connect with plc communication, and circuit monitoring equipment is sent out monitoring signals by PLC
It send to computer, when computer judges to occur power supply way circuit disconnection fault, computer is sent instructions by PLC so that stand-by power supply
It opens, the safe shutdown protective device shutdown with high safety under conditions of stand-by power supply provides electric power.
Further, the safe shutdown protective device of hydrogen making by natural gas reformation system above-mentioned, wherein in reformer
Gas component monitoring equipment is once reformed in output end setting, and primary gas component monitoring equipment of reforming is connect with plc communication, primary weight
Monitoring signals are sent to computer by whole gas component monitoring equipment by PLC, and it is different that computer judges to occur once reformation gas ingredient
When normal failure, computer sends out instruction by PLC so that the shutdown with high safety of safe shutdown protective device.
Further, the safe shutdown protective device of hydrogen making by natural gas reformation system above-mentioned, wherein defeated in natural gas
It send and is provided with raw natural gas component monitoring equipment on manifold, raw natural gas component monitoring equipment is connect with plc communication, raw material
Monitoring signals are sent to computer by gas component monitoring device by PLC, and computer judges to occur former according to monitoring signals
When expecting gas component abnormal failure, computer sends out instruction by PLC so that safe shutdown protective device is with high safety to stop
Machine.
Further, the safe shutdown protective device of hydrogen making by natural gas reformation system above-mentioned, wherein carbon monoxide turns
The output end of parallel operation is provided with carbon monoxide conversion gas component monitoring equipment, and carbon monoxide converts gas component monitoring equipment and PLC
Communication connection, carbon monoxide convert gas component monitoring equipment and monitoring signals are sent to computer by PLC, and computer judges hair
When raw carbon monoxide conversion gas ingredient abnormal failure, computer sends out instruction by PLC, and safe shutdown protective device is with high safety
It shuts down.
Further, the safe shutdown protective device of hydrogen making by natural gas reformation system above-mentioned, wherein pressure swing adsorber
Output end be provided with finished hydrogen purity monitoring device, finished hydrogen purity monitoring device is connect with plc communication, finished hydrogen
Monitoring signals are sent to computer by purity monitoring device by PLC, and computer judges that the relatively low failure of finished hydrogen purity occurs
When, computer sends out instruction by PLC so that the shutdown with high safety of safe shutdown protective device.
Further, the safe shutdown protective device of hydrogen making by natural gas reformation system above-mentioned, wherein equipment mounting shell
Density of hydrogen monitoring device is provided in body, density of hydrogen monitoring device is connect with plc communication, and density of hydrogen monitoring device passes through
Monitoring signals are sent to computer by PLC, and when computer judges to occur hydrogen gas leakage failure, computer sends out instruction by PLC,
Make the shutdown with high safety of safe shutdown protective device.
Still further, the safe shutdown protective device of hydrogen making by natural gas reformation system above-mentioned, wherein circuit monitoring is set
Standby is outage detection device, primary to reform gas component monitoring equipment, carbon monoxide conversion gas component monitoring equipment, finished hydrogen purity
Monitoring device is gas chromatograph, and density of hydrogen monitoring device is hydrogen detection instrument.
It is an advantage of the invention that：One, in safe shutdown protective device stopping process with high safety, to reformer, an oxidation
It is filled with inert gas in carbon converter, desulfurization mechanism, to the catalysis in reformer, carbon monoxide converter 2, desulfurization mechanism
Agent is protected, this can effectively prevent contaminated catalysts, to be effectively saved production cost.Two, spare due to being provided with
Power supply, this also carry out safe shutdown under power blackout situation, to further effectively prevent contaminated catalysts, further
It is effectively saved production cost.Three, signal processing control module can make failure rapid judgement, send out instruction rapidly, rapidly
Safe shutdown is carried out, this also can further effectively prevent contaminated catalysts.
Description of the drawings
Fig. 1 is the arrangement signal of the safe shutdown protective device of hydrogen making by natural gas reformation system of the present invention
Figure.
Fig. 2 be hydrogen making by natural gas reformation system of the present invention safe shutdown protective device in stand-by power supply, equipment
The mounting structure schematic diagram that fan is forced in shell is installed.
Specific implementation mode
The present invention is described in further detail with preferred embodiment below in conjunction with the accompanying drawings.
In order to the stop safe protective device to hydrogen making by natural gas reformation system of the present invention make it is more visible describe,
Related introduction first is done to the structure of hydrogen making by natural gas reformation system below.
As shown in Figure 1, the structure of hydrogen making by natural gas reformation system, includes mainly：Equipment installs shell 200, equipment installation
Reformer 1, carbon monoxide converter 2, pressure swing adsorber 3 are provided in shell 200.A pair of of buffering storage is communicated on reformer 1
Tank --- burning natural gas buffer reservoir 4 and reaction natural gas buffer reservoir 5, the input terminal of a pair of of buffer reservoir with day
Right gas delivery main 6 is connected, specifically：6 phases of input pipe 41 and natural gas transportation manifold of burning natural gas buffer reservoir 4
Connection, the input pipe 51 of reaction natural gas buffer reservoir 5 are connected with natural gas transportation manifold 6.Raw natural gas is by natural
Gas delivery main 6 input, burning with the output end of natural gas buffer reservoir 4 be connected to the burning natural gas on reformer 1 into
Tracheae 11, burning are connected with natural gas air inlet pipe 11 with the burner of 1 enclosure interior of reformer.Reaction is buffered with natural gas and is stored up
The output end of tank 5 is connected with the input terminal 71 of desulfurization mechanism 7, and the output end 72 of desulfurization mechanism 7 reacts use on reformer 1
Natural gas input pipe 12 is connected, and reaction is connected with natural gas input pipe 12 with the reactor in reformer 1.On reformer 1
It is additionally provided with vapor input pipe 14 and air intake duct 13, vapor input pipe 14 is connected with the reactor in reformer 1,
Air intake duct 13 is connected with the enclosure interior of reformer 1.The reformer output pipe 17 and one of 1 output end of reformer aoxidizes
Carbon converter 2 is connected, and the chuck layer for adjusting temperature is provided on carbon monoxide converter 2, carbon monoxide converter 2
Heat-conducting medium circuit 21, the carbon monoxide converter output pipe 23 of 2 output end of carbon monoxide converter are connected in chuck layer
It is connected to pressure swing adsorber 3, the output end of pressure swing adsorber 3 is provided with hydrogen efferent duct 31.
The operation principle of hydrogen making by natural gas reformation system is described below：Raw natural gas is distinguished by natural gas transportation manifold 6
It is input to burning natural gas buffer reservoir 4 and reaction natural gas buffer reservoir 5, burning is used in natural gas buffer reservoir 4
The enclosure interior that burning enters to reformer 1 with natural gas carries out burning to be provided for the reaction in reactor in reformer 1
Thermal energy, the combustion air in combustion process are entered by air intake duct 13 in the shell of reformer 1.Reaction is buffered with natural gas
Reaction in storage tank 5 is introduced into desulfurization in desulfurization mechanism 7 with natural gas.The structure of desulfurization mechanism includes：By at least two desulfurization
Pipeline is arranged in parallel the desulfurization mechanism to be formed, and is respectively provided on every desulfurization pipeline there are one devulcanizer 70, each devulcanizer 70
Devulcanizer electric flow control valve 701 is both provided on input pipe, the input pipe of all devulcanizers 70 converges to form desulfurization mechanism 7
Input terminal, the efferent duct of all devulcanizers 70 converges the output end 72 to form desulfurization mechanism 7, the input terminal 71 of desulfurization mechanism 7
It is connected with the output end of natural gas buffer reservoir 5 with reacting, the output end 72 of desulfurization mechanism 7 uses day with reacting for reformer 1
Right gas air inlet pipe 12 is connected, and the desulfurization pipeline that devulcanizer electric flow control valve 701 is opened is work desulfurization pipeline, devulcanizer
The desulfurization pipeline that electric flow control valve 701 is closed is spare desulfurization pipeline.Natural gas after desulfurization is defeated from reaction natural gas
Enter pipe 12 to enter in the reactor in reformer 1, the vapor of simultaneous reactions enters to reformation by vapor input pipe 14
In the reactor of device 1, primary reformation reformer of the gas from 1 output end of reformer of reaction generation in the reactor in reformer 1
It is further reacted in the output to carbon monoxide converter 2 of output pipe 17, the conversion that the reaction of carbon monoxide converter 2 generates
Gas is entered in pressure swing adsorber 3 from the output end of carbon monoxide converter 2 and is purified, and the purification of pressure swing adsorber 3 generates ultra-pure hydrogen
Gas, that is, finished hydrogen, finished hydrogen export outward from the hydrogen efferent duct 31 of 3 output end of pressure swing adsorber.
The safe shutdown protective device of hydrogen making by natural gas reformation system of the present invention, including：Inertial gas tank 8,
It is defeated that the first inert gas efferent duct 81, the second inert gas efferent duct 82, third inert gas are provided on inertial gas tank 8
Outlet pipe 83, the first inert gas efferent duct 81, the second inert gas efferent duct 82, third inert gas efferent duct 83 are respectively communicated with
To reformer 1, carbon monoxide converter 2, desulfurization mechanism 3, the first inert gas is provided on the first inert gas efferent duct 81
Be provided on electric flow control valve 811, the second inert gas efferent duct 82 second inert gas electric flow control valve 821,
Third inert gas electric flow control valve 831 is provided on third inert gas efferent duct 83；Setting is total in natural gas transportation
Natural gas main valve 61 on pipe 6；Pipeline 73 is diffused in the desulfurization being arranged in 7 input terminal 71 of desulfurization mechanism, and desulfurization is diffused on pipeline 73
It is provided with desulfurization diffusion valve 731, desulfurization loine pressure table 702 is both provided on every desulfurization pipeline in desulfurization mechanism 7；If
It sets the reformer on reformer 1 and diffuses pipeline 16, reformer, which diffuses, to be provided with reformer diffusion valve 161 and reform on pipeline 16
Device diffuses pressure 162, and the carbon monoxide converter being arranged on carbon monoxide converter 2 diffuses pipeline 22, carbon monoxide conversion
Device, which diffuses, is provided with carbon monoxide converter diffusion valve 221 and carbon monoxide converter diffuses pressure gauge 222 on pipeline 22；Setting
Pressure fan 201 on equipment installation shell 200.The step of safe shutdown protective device shutdown with high safety includes：First
Step closes the natural gas main valve 61 on natural gas transportation manifold 6, to cut off raw natural gas supply so that entire natural gas
Hydrogen production system employing reforming technology stops heating.Second step opens reformer diffusion valve 161 so that the reaction gas in reformer 1 in reactor
Body diffuses pipeline 16 by reformer and is discharged；Open carbon monoxide converter diffusion valve 221 so that in carbon monoxide converter 2
Reaction gas by carbon monoxide converter diffuse pipeline 22 be discharged；Open desulfurization diffusion valve 731 so that in desulfurization mechanism 7
Reaction gas in the devulcanizer of working condition diffuses pipeline 73 by desulfurization and is discharged；Fan 201 is forced in addition, opening, to
Equipment installation shell 200 is aerated, fan 201 can will be forced to open to maximum with ventilation effect to improve.Third walks, and beats
Open the first inert gas electric flow control valve 811, the second inert gas electric flow control valve 821, third inert gas electricity
Dynamic flow control valve 831 so that the reactor into reformer 1, carbon monoxide converter 2, the desulfurization respectively of inertial gas tank 8
Be filled with inert gas in the devulcanizer 70 of mechanism 7, to in reactor in reformer 1, it is in carbon monoxide converter 2 and de-
Catalyst in the devulcanizer 70 of sulphur mechanism 7 is protected, and reformer diffusion valve 161, carbon monoxide converter are subsequently closed
Diffusion valve 221, desulfurization diffusion valve 731, when reformer diffuses pressure gauge 162, carbon monoxide converter diffuses pressure gauge 222, with
And the pressure of desulfurization loine pressure table 702 in work desulfurization pipeline closes the first inert gas when being shown as 1.5Mpa respectively
Electric flow control valve 811, the second inert gas electric flow control valve 821, third inert gas electric flow control valve
831, to stop being filled with inert gas.4th step closes the production control system software of hydrogen making by natural gas reformation system, then
Close power supply.
For the ease of automatically controlling, the safe shutdown protective device of hydrogen making by natural gas reformation system further includes in the present embodiment
Signal processing control module, signal processing control module include PLC and computer.First inert gas electric flow control valve
811, the second inert gas electric flow control valve 821, third inert gas electric flow control valve 831, natural gas main valve 61,
Desulfurization diffusion valve 731 and desulfurization loine pressure table 702, reformer diffusion valve 161 and reformer diffuse the oxidation of pressure gauge 162, one
Carbon converter diffusion valve 221 and carbon monoxide converter diffuse pressure gauge 222, fan 201 are forced to be connect with plc communication, count
Calculation machine controls the first inert gas electric flow control valve 811, the second inert gas electric flow control valve 821, the by PLC
Three inert gas electric flow control valves 831, natural gas main valve 61, desulfurization diffusion valve 731, reformer diffusion valve 161 and one
Carbonoxide converter diffusion valve 221 acts.
When being powered off in order to ensure power supply way circuit, safe shutdown protective device with high safety can also be shut down, in the present embodiment
The safe shutdown protective device of hydrogen making by natural gas reformation system further includes circuit monitoring equipment 1001 and stand-by power supply 9, circuit
Monitoring device 1001 is arranged in the power supply way circuit 100 of hydrogen making by natural gas reformation system, to monitor power supply way circuit 100
Break-make, the circuit monitoring equipment 1001 described in the present embodiment are outage detection device.Circuit monitoring equipment 1001 connects with plc communication
It connects, monitoring signals are sent to computer by circuit monitoring equipment 1001 by PLC, and computer judges that the power-off of power supply way circuit occurs
When failure, computer sends out instruction so that the unlatching of stand-by power supply 9, safety under conditions of stand-by power supply 9 provides electric power by PLC
Shutdown protector shutdown with high safety.
Gas component monitoring equipment 103 is once reformed in the output end setting of reformer 1 in hydrogen making by natural gas reformation system,
The primary reformation gas component monitoring equipment 103 is gas chromatograph.The primary gas component monitoring equipment 103 and PLC that reforms leads to
Monitoring signals are sent to computer by letter connection, primary gas component monitoring equipment 103 of reforming by PLC, and computer judges to occur
When primary reformation gas ingredient abnormal failure, computer sends out instruction by PLC, makes safe shutdown protective device is with high safety to stop
Machine.
Raw natural gas component monitoring equipment is provided on natural gas transportation manifold 6 in hydrogen making by natural gas reformation system
105, raw natural gas component monitoring equipment 105 is gas chromatograph.Raw natural gas component monitoring equipment 105 and plc communication
Monitoring signals are sent to computer by connection, raw natural gas component monitoring equipment 105 by PLC, and computer is believed according to monitoring
Number judge occur raw natural gas ingredient abnormal failure when, computer is sent instructions by PLC, safe shutdown protective device implement peace
Full cut-off machine.
The output end of carbon monoxide converter 2 in hydrogen making by natural gas reformation system be provided with carbon monoxide conversion gas at
Point monitoring device 103, carbon monoxide convert gas component monitoring equipment 103 as gas chromatograph in the present embodiment, carbon monoxide turn
Ventilation component monitoring equipment 103 is arranged on the reformer output pipe 17 of the output end of carbon monoxide converter 2.Carbon monoxide
Conversion gas component monitoring equipment 103 is connect with plc communication, and carbon monoxide conversion gas component monitoring equipment 103 leads to monitoring signals
It crosses PLC and is sent to computer, when computer judges to occur carbon monoxide conversion gas ingredient abnormal failure, computer is sent out by PLC
Go out instruction, makes the shutdown with high safety of safe shutdown protective device.
The output end of pressure swing adsorber 3 in hydrogen making by natural gas reformation system is provided with finished hydrogen purity monitoring device
107, finished hydrogen purity monitoring device 107 is gas chromatograph in the present embodiment, and finished hydrogen purity monitoring device 107 is arranged
On the hydrogen efferent duct 31 of the output end of pressure swing adsorber 3.Finished hydrogen purity monitoring device 107 is connect with plc communication, at
Monitoring signals are sent to computer by product hydrogen purity monitoring device 107 by PLC, and computer judges that finished hydrogen purity occurs
When relatively low failure, computer sends out instruction by PLC, makes the shutdown with high safety of safe shutdown protective device.
It is provided with density of hydrogen monitoring device 202, this reality in the equipment installation shell 200 of hydrogen making by natural gas reformation system
It is hydrogen detection instrument to apply density of hydrogen monitoring device 202 in example.Density of hydrogen monitoring device 202 is connect with plc communication, and hydrogen is dense
Monitoring signals are sent to computer by degree monitoring device 202 by PLC, when computer judges to occur hydrogen gas leakage failure, are calculated
Machine sends out instruction by PLC, makes the shutdown with high safety of safe shutdown protective device.
The method of above computer failure judgement is as follows：Monitoring signals are sent to by each monitoring device
Monitoring signals are converted into being sent to computer after measured value by PLC, PLC, are preset in computer and distinguish phase with each measured value
Measured value is compared by corresponding preset value, computer with corresponding preset value, when a certain measured value is beyond corresponding default
When being worth range, computer judges that failure corresponding with the measured value occurs.
The advantage of the invention is that：One, in safe shutdown protective device stopping process with high safety, to reformer 1, an oxygen
Change in carbon converter 2, desulfurization mechanism 7 and be filled with inert gas, to in reformer 1, carbon monoxide converter 2, desulfurization mechanism 7
Catalyst protected, this can effectively prevent contaminated catalysts, to be effectively saved production cost.Two, due to setting
Stand-by power supply 9, this also carry out safe shutdown under power blackout situation, to further catalyst be effectively prevent to get dirty
Dye, is further effectively saved production cost.Three, signal processing control module can be to failure to going out rapid judgement, to rapid
Instruction is sent out, carries out safe shutdown, this also can further effectively prevent contaminated catalysts.
Claims (9)
1. the safe shutdown protective device of hydrogen making by natural gas reformation system, it is characterised in that：Including：Inertial gas tank, inertia
It is provided with the first inert gas efferent duct, the second inert gas efferent duct, third inert gas efferent duct in gas reservoir, first
Inert gas efferent duct, the second inert gas efferent duct, third inert gas efferent duct are respectively communicated to reformer, carbon monoxide
Converter, desulfurization mechanism are provided with the first inert gas electric flow control valve, the second inertia on the first inert gas efferent duct
It is provided with that the second inert gas electric flow control valve, to be provided with third on third inert gas efferent duct lazy on gas output tube
Property gas electric flow control valve；The natural gas main valve being arranged on natural gas transportation manifold；It is arranged in desulfurization mechanism input terminal
Desulfurization diffuse pipeline, desulfurization desorption tube road is provided with desulfurization diffusion valve, on every desulfurization pipeline in desulfurization mechanism
It is provided with desulfurization loine pressure table；The reformer being arranged on reformer diffuses pipeline, and reformer desorption tube road is provided with weight
Whole device diffusion valve and reformer diffuse pressure gauge, and the carbon monoxide converter being arranged on carbon monoxide converter diffuses pipeline,
Carbon monoxide converter desorption tube road is provided with carbon monoxide converter diffusion valve and carbon monoxide converter diffuses pressure gauge；
Pressure fan on equipment installation shell is set；The step of safe shutdown protective device shutdown with high safety includes：The first step,
Close the natural gas main valve on natural gas transportation manifold；Second step opens reformer diffusion valve, carbon monoxide converter diffuses
Valve, forces fan at desulfurization diffusion valve；Third walks, and it is electronic to open the first inert gas electric flow control valve, the second inert gas
Flow control valve, third inert gas electric flow control valve so that inertial gas tank respectively the reactor into reformer,
It is filled with inert gas in carbon monoxide converter, desulfurization mechanism, to in reactor in reformer, in carbon monoxide converter
And the catalyst in desulfurization mechanism is protected, and is subsequently closed reformer diffusion valve, carbon monoxide converter diffusion valve, is taken off
Sulphur diffusion valve turns off the first inert gas electric flow control valve, the second inert gas electric flow control valve, third later
Inert gas electric flow control valve, to stop being filled with inert gas；4th step closes the life of hydrogen making by natural gas reformation system
Control System Software is produced, power supply is then shut off.
2. the safe shutdown protective device of hydrogen making by natural gas reformation system according to claim 1, it is characterised in that：Also wrap
Signal processing control module is included, signal processing control module includes PLC and computer, and the first inert gas electric flow is adjusted
Valve, the second inert gas electric flow control valve, third inert gas electric flow control valve, natural gas main valve, desulfurization are diffused
Valve and desulfurization loine pressure table, reformer diffusion valve and reformer diffuse pressure gauge, carbon monoxide converter diffusion valve and an oxygen
Change carbon converter to diffuse pressure gauge, fan is forced to connect with plc communication, computer controls the first inert gas electricity by PLC
Dynamic flow control valve, the second inert gas electric flow control valve, third inert gas electric flow control valve, natural gas are total
Valve, desulfurization diffusion valve, reformer diffusion valve, carbon monoxide converter diffuse valve events.
3. the safe shutdown protective device of hydrogen making by natural gas reformation system according to claim 2, it is characterised in that：Also wrap
Circuit monitoring equipment and stand-by power supply are included, the power supply way circuit in hydrogen making by natural gas reformation system is arranged in circuit monitoring equipment
In, to monitor the break-make of power supply way circuit, circuit monitoring equipment is connect with plc communication, and circuit monitoring equipment will be supervised by PLC
Survey signal and be sent to computer, when computer judges to occur power supply way circuit disconnection fault, computer sent instructions by PLC so that
Stand-by power supply is opened, the safe shutdown protective device shutdown with high safety under conditions of stand-by power supply provides electric power.
4. the safe shutdown protective device of hydrogen making by natural gas reformation system according to claim 3, it is characterised in that：In weight
Gas component monitoring equipment is once reformed in the output end setting of whole device, and primary gas component monitoring equipment of reforming is connect with plc communication,
Monitoring signals are sent to computer by primary gas component monitoring equipment of reforming by PLC, and computer judges to occur once to reform gas
When ingredient abnormal failure, computer sends out instruction by PLC so that the shutdown with high safety of safe shutdown protective device.
5. the safe shutdown protective device of hydrogen making by natural gas reformation system according to claim 3, it is characterised in that：In day
Raw natural gas component monitoring equipment is provided on right gas delivery main, raw natural gas component monitoring equipment connects with plc communication
It connects, monitoring signals are sent to computer by raw natural gas component monitoring equipment by PLC, and computer judges according to monitoring signals
When raw natural gas ingredient abnormal failure occurs, computer sends out instruction by PLC so that safe shutdown protective device implements peace
Full cut-off machine.
6. the safe shutdown protective device of hydrogen making by natural gas reformation system according to claim 3, it is characterised in that：One oxygen
The output end for changing carbon converter is provided with carbon monoxide conversion gas component monitoring equipment, and carbon monoxide converts gas component monitoring equipment
It is connect with plc communication, monitoring signals are sent to computer, computer by carbon monoxide conversion gas component monitoring equipment by PLC
When judging to occur carbon monoxide conversion gas ingredient abnormal failure, computer sends out instruction by PLC, and safe shutdown protective device is real
Apply safe shutdown.
7. the safe shutdown protective device of hydrogen making by natural gas reformation system according to claim 3, it is characterised in that：Transformation
The output end of absorber is provided with finished hydrogen purity monitoring device, and finished hydrogen purity monitoring device is connect with plc communication, at
Monitoring signals are sent to computer by product hydrogen purity monitoring device by PLC, and computer judges that generation finished hydrogen purity is inclined
When low failure, computer sends out instruction by PLC so that the shutdown with high safety of safe shutdown protective device.
8. the safe shutdown protective device of hydrogen making by natural gas reformation system according to claim 3, it is characterised in that：Equipment
It is provided with density of hydrogen monitoring device in installation shell, density of hydrogen monitoring device is connect with plc communication, and density of hydrogen monitoring is set
Standby that monitoring signals are sent to computer by PLC, when computer judges to occur hydrogen gas leakage failure, computer is sent out by PLC
Go out instruction so that the shutdown with high safety of safe shutdown protective device.
9. the safe shutdown protective device of the hydrogen making by natural gas reformation system according to claim 3 or 4 or 5 or 6 or 7 or 8,
It is characterized in that：Circuit monitoring equipment is outage detection device, primary to reform gas component monitoring equipment, carbon monoxide conversion gas ingredient
Monitoring device, finished hydrogen purity monitoring device are gas chromatograph, and density of hydrogen monitoring device is hydrogen detection instrument.
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| CN201810627184.2A CN108584872A (en) | 2018-06-19 | 2018-06-19 | The safe shutdown protective device of hydrogen making by natural gas reformation system |
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