CN104961097B - DCS automatically controls hydrogen purification system - Google Patents
DCS automatically controls hydrogen purification system Download PDFInfo
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- CN104961097B CN104961097B CN201510419873.0A CN201510419873A CN104961097B CN 104961097 B CN104961097 B CN 104961097B CN 201510419873 A CN201510419873 A CN 201510419873A CN 104961097 B CN104961097 B CN 104961097B
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Abstract
The present invention relates to a kind of DCS automatically controls hydrogen purification system, including raw hydrogen feeding pipe, hydrogen purification pipeline, hydrogen storage hydrogen supply pipeline and blowdown piping one；Connected by heat exchanging pipe between raw hydrogen feeding pipe and hydrogen purification pipeline, between heat exchanging pipe and hydrogen purification pipeline, be provided with anti-explosion electric heater；Heat exchanging pipe includes tail gas heat exchanger, the product gas heat exchanger being connected in parallel, and the inlet end of two heat exchangers is connected with the output end of raw hydrogen feeding pipe respectively, outlet side is connected with anti-explosion electric heater respectively；Product gas output pipe is connected with product gas heat exchanging pipe, tail gas output pipe is connected with tail gas heat exchanging pipe, product gas heat exchanging pipe is connected with hydrogen storage hydrogen supply pipeline after product gas heat exchanger heat exchange, and tail gas heat exchanging pipe is connected with blowdown piping one after tail gas heat exchanger heat exchange.Advantage is：Anti-explosion safety, thermal-stable, efficient energy-saving, whole system handling strong, cost of investment is low, and the changing effect of high-purity hydrogen is good.
Description
Technical field
The present invention relates to the technical field of hydrogen purification, especially relates to a kind of DCS and automatically controls hydrogen purification system.
Background technology
Hydrogen purification system is the indispensable system in technology for hydrogen purification.Hydrogen purification system traditional in the market,
Raw hydrogen feeding pipe is provided with valve V02, V1, V3 and accurate filter, is provided with valve V2 between valve V02 and V3；Accurate
Filter connect hydrogen purification pipeline, in hydrogen purification pipeline purification pipeline duct wall be provided with winding heating wire or
Heated up by the way of thermal-flame heating；Hydrogen purification pipeline is provided with product gas output pipe and tail gas efferent duct
Road, tail gas output pipe are then connected with blowdown piping one, and product gas output pipe is then connected with hydrogen storage hydrogen supply pipeline；Blowdown piping
One is provided with valve V14；Blowdown piping two, valve V10, blowdown piping are sequentially provided with by inlet end to outlet side on hydrogen storage hydrogen supply pipeline
Two are provided with valve V13；Nitrogen feed pipeline, the output end of nitrogen feed pipeline and precision is connected with raw hydrogen feeding pipe
The inlet end connection of filter, nitrogen feed pipeline are provided with valve V7.Under normal circumstances, this hydrogen purification system can be accomplished
Purification task, but during operation, power consumption is greatly, handling poor, the stability also extreme difference of whole system, investment
Cost is also high, and the changing effect of high-purity hydrogen is poor.And it is defeated in product gas output pipe and tail gas in this purification system
Go out pipeline and water-cooling system will be set, thus cause cost of investment and increase further, and waste water resource extremely,
Feature of environmental protection extreme difference.
Content of the invention
For the deficiency that above-mentioned prior art is present, it is an object of the invention to provide a kind of anti-explosion safety, thermal-stable, section
Can efficiently, whole system handling strong, cost of investment is low, and the DCS that the changing effect of high-purity hydrogen is good automatically controls hydrogen
Purification system.
For realizing above-mentioned purpose, the invention provides technical scheme below：
A kind of DCS automatically controls hydrogen purification system, supplies including raw hydrogen feeding pipe, hydrogen purification pipeline, hydrogen storage
Hydrogen pipeline and blowdown piping one；Raw hydrogen feeding pipe includes valve V02 and accurate filter, valve V02 and secondary filter
Valve V2 is provided between device；Nitrogen feed pipeline, the output end of nitrogen feed pipeline and essence is connected with raw hydrogen feeding pipe
The inlet end connection of close filter, nitrogen feed pipeline are provided with valve V7；On hydrogen storage hydrogen supply pipeline by inlet end to outlet side according to
Secondary be provided with blowdown piping two, valve V10, blowdown piping two is provided with valve V13；Hydrogen purification pipeline is provided with product gas output pipe
With tail gas output pipe；Blowdown piping one is provided with valve V14；By changing between raw hydrogen feeding pipe and hydrogen purification pipeline
Pipe line is connected, and is provided with anti-explosion electric heater between heat exchanging pipe and hydrogen purification pipeline；Heat exchanging pipe includes to be connected in parallel
Tail gas heat exchanger, product gas heat exchanger, the inlet end of two heat exchangers are connected with the output end of raw hydrogen feeding pipe respectively, go out
Gas end is connected with anti-explosion electric heater respectively；Product gas output pipe is connected with product gas heat exchanging pipe, and tail gas output pipe connects
Tail gas heat exchanging pipe is connected to, product gas heat exchanging pipe is connected with hydrogen storage hydrogen supply pipeline after product gas heat exchanger heat exchange, tail gas
Heat exchanging pipe is connected with blowdown piping one after tail gas heat exchanger heat exchange.
The present invention is further arranged to：The output end of the inlet end of the tail gas heat exchanger and raw hydrogen feeding pipe it
Between connecting line be provided with valve V4 and temperature thermocouple TI1, the output end after tail gas heat exchanging pipe heat exchange and blowdown piping one
Inlet end between pipeline be provided with temperature thermocouple TI5, controller is by temperature thermocouple TI5 and temperature thermocouple TI1
The uninterrupted of temperature approach regulating valve V4.
The present invention is further arranged to：The inlet end of the product gas heat exchanger and the output end of raw hydrogen feeding pipe
Between connecting line be provided with valve V5 and temperature thermocouple TI2, the output end after product gas heat exchanging pipe heat exchange is supplied with hydrogen storage
Between the inlet end of hydrogen pipeline, pipeline is provided with temperature thermocouple TI7, and controller is by temperature thermocouple TI7 and temperature thermocouple
The uninterrupted of temperature approach regulating valve V5 of TI2.
The present invention is further arranged to：The pipeline that the anti-explosion electric heater is connected with hydrogen purification pipeline is provided with valve
V9.
The present invention is further arranged to：The electric heater is provided with temperature thermocouple TI9, temperature thermocouple TI9 and can lead to
Cross the switch of controller control valve V2, V7, V9, V10, V13.
The present invention is further arranged to：The raw hydrogen feeding pipe is provided with flowmeter FIC2 and pressure gauge PI2, stream
Uninterrupted of the gauge FIC2 by controller control valve V2, pressure gauge PI2 is by controller control valve V10 and the switch of V13.
The present invention is further arranged to：The nitrogen feed pipeline is provided with flowmeter FIC1, flowmeter FIC1 by control
The switch of device control valve V7 processed.
The present invention is further arranged to：The hydrogen storage hydrogen supply pipeline is provided with flowmeter FIC4, flowmeter FIC4 by control
The uninterrupted of device control valve V10 processed.
The present invention is further arranged to：The blowdown piping one is provided with pressure gauge PI4 and flowmeter FIC3, flowmeter
Uninterrupted of the FIC3 by controller control valve V14；The hydrogen storage hydrogen supply pipeline is provided with pressure gauge PI5；Controller passes through
The uninterrupted of pressure difference regulating valve V10 of pressure gauge PI4 and pressure gauge PI5 and the switch of valve V13.
The present invention is further arranged to：The product gas output pipe is provided with temperature thermocouple.
By adopting technique scheme, the technique effect reached by the present invention is：
1st, anti-explosion safety：Can be used below various explosion-proof occasions, for the more special work of some conditions
Particularly suitable for industry or Workplace, use very safe；
2nd, thermal-stable：Heat energy high conversion rate, not only can be heated for a long time, and can be converted incessantly
Heat, and its heating property can also be adjusted, the height of temperature can be easy to use with real-time control；
3rd, efficient energy-saving：Power saving can either be accomplished, substantial amounts of electric energy is saved, can accomplish that efficient hydrogen is converted again；
4th, raw hydrogen controls flow through valve V4, enters tail gas heat exchanger, and oozing residual air with the high temperature for backflowing carries out heat exchange；Separately
One tunnel controls flow through valve V5, enters product gas heat exchanger, and high-temperature product gas carries out heat exchange with backflowing, and has so not only reclaimed and is
The heat of system, reducing energy consumption, and can also reduce by a water cooler, the cost of investment is reduced, also more environmental protection；
5th, system is furnished with pressure gauge, temperature thermocouple, flowmeter etc., carries out Regulation in all life process by controller, can be completely real
Existing the system can control at the scene manually, it is also possible to realize DCS by controller and automatically control.
Description of the drawings
The present invention is further detailed explanation below in conjunction with the accompanying drawings.
Fig. 1 is the principle schematic diagram. of the present invention.
Fig. 2 is the structure for amplifying principle schematic in a region in Fig. 1.
Fig. 3 is the structure for amplifying principle schematic in b region in Fig. 1.
Fig. 4 is the structure for amplifying principle schematic in c region in Fig. 1.
Fig. 5 is the structure for amplifying principle schematic in d region in Fig. 1.
Fig. 6 is the structure for amplifying principle schematic in e region in Fig. 1.
Specific embodiment
With reference to Fig. 1, it is that a kind of DCS disclosed by the invention automatically controls hydrogen purification system.With reference to Fig. 2, raw hydrogen is entered
Expects pipe road includes valve V02, V1, V3 and accurate filter 10, is provided with valve V2 between valve V02 and accurate filter 10；Feed hydrogen
Nitrogen feed pipeline is connected with gas feeding pipe, and the output end of nitrogen feed pipeline is connected with the inlet end of accurate filter 10
Connect, nitrogen feed pipeline is provided with valve V7, valve V6 is connected with the inlet end of valve V7, is connected with valve V8 on outlet side；Blow-down pipe
Valve V14, V15, V36 is sequentially provided with road one by air inlet to outgassing direction.With reference to Fig. 4, by inlet end on hydrogen storage hydrogen supply pipeline
Blowdown piping two, valve V10, product air accumulator 11 are sequentially provided with to outlet side, blowdown piping two is provided with valve V13.Ordinary circumstance
Under, the aperture of valve V2 is just allowed to open valve when valve V2 aperture is more than or equal to 30% as the condition for allowing trigger valve V10
V10；While valve V2 is closed, valve V10 meeting interlocking close, valve V13 can interlock and be opened to 50% (manually adjustable after 1 second), valve
V7 can interlock aperture 30% (time delay 1 second after manually adjustable valve V7).
With reference to Fig. 1,2,4：
Flowmeter FIC2 and pressure gauge PI2 is additionally provided with raw hydrogen feeding pipe, and generally, flowmeter FIC2 sets
The inlet end in valve V2 is counted, pressure gauge PI2 design is in the outlet side of valve V2, stream of the flowmeter FIC2 by controller control valve V2
Amount size, pressure gauge PI2 passes through the switch of controller control valve V10 and V13, generally for the detection and analysis for facilitating equipment, meeting
In the outlet side that valve V17, valve V17 is arranged on the pipeline of valve V2 inlet end can be used to connecting detection analytical instrument.In order to
Ensure the stability of pressure gauge PI2, first valve V16 can be positioned close on the pipeline of valve V2 inlet end, then again by valve V16's
Outlet side is connected with pressure gauge PI2.Flowmeter FIC2 passes through controller regulating valve V2, and flow drives big valve less than when setting flow value
V2, on the contrary then turn down valve V2.Certainly, also pressure gauge PI3 can be set on the pipeline of the output end of raw hydrogen feeding pipe, is
Ensure the stability of pressure gauge PI3, valve V19 first can be positioned close to the pipeline of the output end of raw hydrogen feeding pipe
On, then again the outlet side of valve V19 is connected with pressure gauge PI3, it is the air pressure for detecting output for convenience to arrange pressure gauge PI3
Stability.
Flowmeter FIC1, flowmeter FIC1 is additionally provided with nitrogen feed pipeline by the switch of controller control valve V7, one
As in the case of, flowmeter FIC1 is arranged between valve V7 and V8.In order to observe at any time or be clearly understood that nitrogen enters
The nitrogen pressure on expects pipe road, it will usually pressure gauge PI1 is set on the pipeline at the inlet end of valve V8, in order to ensure pressure
Meter PI1 stability, can first valve V18 is positioned close on the pipeline of valve V8 inlet end, then again by the outlet side of valve V18 with
Pressure gauge PI1 connects.The reason for arranging nitrogen feed pipeline prevents the dangerous of hydrogen to improve the security of the system
Property, it will usually operationally, first lead to the nitrogen of a period of time, after making the pressure and temperature of internal system stable, just nitrogen is entered
Expects pipe road is closed, and opening hydrogen feed tube road carries out purification work.Flowmeter FIC1 passes through controller regulating valve V7, and flow is less than
Big valve V7 is opened when setting flow value, otherwise then turn down valve V7.
Pressure gauge PI4 and flowmeter FIC3, flowmeter FIC3 is additionally provided with blowdown piping one by controller control valve V14
Uninterrupted；Generally, by air inlet to outgassing direction on blowdown piping one, pressure gauge PI4 was set before this, then was arranged
Flowmeter FIC3.In order to ensure the stability of pressure gauge PI4, first valve V24 can be positioned close to the air inlet on blowdown piping one
On the pipeline at end, then again the outlet side of valve V24 is connected with pressure gauge PI4.Generally for the detection and analysis for facilitating equipment, meeting
In the outlet side that valve V25, valve V25 is arranged on the pipeline of valve V24 outlet side can be used to connecting detection analytical instrument.Flow
Meter FIC3 adopts controller regulating valve V14, and less than or equal to flow value is set, (generally, setting value is flowmeter to flow
The 1/10 of FIC2 setting value) when open big valve V14, otherwise then turn down valve V14.
Pressure gauge PI5 and flowmeter FIC4, flowmeter FIC4 is additionally provided with hydrogen storage hydrogen supply pipeline by controller control valve
The uninterrupted of V10.Generally, by air inlet to outgassing direction on hydrogen storage hydrogen supply pipeline, pressure gauge PI5 was set before this,
Flowmeter FIC4 is set again.In order to ensure the stability of pressure gauge PI5, first valve V21 can be positioned close to hydrogen storage hydrogen supply pipeline
On inlet end pipeline on, then again the outlet side of valve V21 is connected with pressure gauge PI5.Generally for the inspection for facilitating equipment
Cls analysis, can be used to connecting detection analysis in the outlet side for arranging valve V22, valve V22 on the pipeline of valve V10 inlet end
Instrument.The inlet end of blowdown piping two is generally located on the pipeline of valve V10 inlet end.And also to facilitating product to store up
The detection and analysis of gas tank 11, can be used to connection inspection in the outlet side for arranging valve V23, valve V23 on product air accumulator 11
Cls analysis instrument.Flowmeter FIC4 adopts controller regulating valve V10, and flow opens big valve V10 less than or equal to when setting flow value,
Otherwise then turn down valve V10.
In above-mentioned, uninterrupted and valve of the controller by pressure difference regulating valve V10 of pressure gauge PI4 and pressure gauge PI5
The switch of V13.Pressure difference opens big valve V10 less than setting value (being generally 0.5MPa), and pressure difference is less than or equal to
Interlock during 0.1MPa clear way valve V13；When pressure gauge PI2 is less than or equal to 1.2MPa, valve V10 interlocking close, valve V13 standard-sized sheet, stops
Only two hydrogen gas compressors, slowly turn down (closing 10% per 20 seconds, until fully closed), when flowmeter FIC1 flow is less than or equal to setting
During definite value, slowly open valve V7 (10% being opened per 20 seconds, until flow is more than stopping valve opening during setting value).
With reference to Fig. 1,6, hydrogen purification pipeline is provided with product gas output pipe and tail gas output pipe, generally,
During purifying hydrogen, a part of unpurified hydrogen gas can be produced while high-purity hydrogen is produced, because can be by
Two kinds of gases are separately exported by two kinds of pipelines.Generally all can pass through purifying column, multiple purifying plants in purifying column, are provided with, each
Two kinds of different gas off-takes can be all provided with purifying plant, one kind is high-purity hydrogen, another kind of then be impurity hydrogen, this reality
Existing mode is realized using palladium-based composite membrane；With reference to there are four palladium-based composite membrane purifying plants in Fig. 6, tower, by air inlet
End air inlet, enters in each purifying plant, is exporting, wherein, in the pipe of inlet end from the gas off-take of each purifying plant
Automatic valve is equipped with road, and such as valve V101, V102, V201, V202, V301, V302, V401, V402 of in figure, is and is arranged on
Automatic valve on inlet end pipeline, also can arrange the valve V20 of detection and analysis certainly on the pipeline of inlet end, in each purification
Automatic valve can be all set on the tail gas output pipe of device, and such as V103, V203, V303, V403 of in figure, in each purifying plant
Product gas output pipe on automatic valve, such as V104, V204, V304, V404 of in figure can be all set, while can also arrange thermometric
Thermocouple TI10, TI11, TI12, TI13, and valve V108, V208, V308, V408 of detection and analysis.This setup
It is only a kind of preferred embodiment, it is of course possible to which actual tune is carried out to valve and temperature thermocouple etc. according to actual occupation mode
Whole.
With reference to Fig. 1,3,5,6, connected by heat exchanging pipe between raw hydrogen feeding pipe and hydrogen purification pipeline, heat exchange
Anti-explosion electric heater 12 is provided between pipeline and hydrogen purification pipeline；With reference to Fig. 3, heat exchanging pipe includes that the tail gas being connected in parallel is changed
Hot device 13, product gas heat exchanger 14, the inlet end of two heat exchangers are connected with the output end of raw hydrogen feeding pipe respectively, give vent to anger
End is connected with anti-explosion electric heater 12 respectively；Product gas output pipe is connected with product gas heat exchanging pipe, and tail gas output pipe connects
Tail gas heat exchanging pipe is connected to, product gas heat exchanging pipe is connected with hydrogen storage hydrogen supply pipeline after product gas heat exchanger heat exchange, tail gas
Heat exchanging pipe is connected with blowdown piping one after tail gas heat exchanger heat exchange.Certainly, can some thermometrics be set in these pipelines
Temperature thermocouple TI2, TI3, TI4, TI6, TI8 of thermocouple, such as in figure, is to be arranged on pipeline and conveniently detects whenever and wherever possible
The temperature variations of pipeline, to make quick and accurate judgement and regulation and control.The inlet end of tail gas heat exchanger and raw material
Connecting line between the output end on hydrogen feed tube road is provided with valve V4 and temperature thermocouple TI1, tail gas heat exchanging pipe heat exchange
Between rear output end and the inlet end of blowdown piping one, pipeline is provided with temperature thermocouple TI5, and controller passes through thermometric thermoelectricity
The uninterrupted of temperature approach regulating valve V4 of even TI5 and temperature thermocouple TI1, the temperature difference are more than or equal to temperature difference setting value (8 DEG C)
Big valve V4 is opened, otherwise then turns down valve V4.Between the output end of the inlet end of product gas heat exchanger and raw hydrogen feeding pipe
Connecting line is provided with valve V5 and temperature thermocouple TI2, the output end after product gas heat exchanging pipe heat exchange and hydrogen storage hydrogen supply pipeline
Inlet end between pipeline be provided with temperature thermocouple TI7, controller is by temperature thermocouple TI7 and temperature thermocouple TI2
The uninterrupted of temperature approach regulating valve V5, the temperature difference open big valve V5 more than or equal to temperature difference setting value (8 DEG C), otherwise then turn down valve
V5.
With reference to Fig. 1,5, the pipeline that anti-explosion electric heater 12 is connected with hydrogen purification pipeline is provided with valve V9.Explosion-proof electrical heating
Device 12 is provided with temperature thermocouple TI9, temperature thermocouple TI9 can be by controller control valve V2, V7, the opening of V9, V10, V13
Close.
This hydrogen purification system by：Palladium film purifier, anti-explosion electric heater, product gas heat exchanger, tail gas heat exchanger, precision
Filter, flowmeter, temperature thermocouple (temperature sensor), pressure gauge (pressure sensor) and necessary manual, pneumatic control
Valve member etc. constitutes, and all pipelines are the stainless steel tube through soda acid cleaning and high pure nitrogen purge, to ensure palladium film purifying
System can produce the ultra-pure hydrogen of 99.9999% or higher purity.
After raw hydrogen to be purified controls through automatic valve V2, orifice flowmeter FIC2 is measured and accurate filter is filtered, point
For two-way, a road is to control flow through automatic valve V4, enters tail gas heat exchanger, and another Lu Weijing automatic valve V5 controls flow, enters
Enter product gas heat exchanger, the two-way gas after heat exchanger heat exchange converges the gas heating of entrance anti-explosion electric heater, gas is heated to
Four groups of palladium film purifiers are entered during uniform temperature, pass through palladium film in the hydrogen of the internal higher partial pressure of membrane tube under the promotion of pressure differential
Permeate to other side, and other non-hydrogen gases effectively be intercepted due to passing through palladium film and be removed, so as to complete hydrogen
The purifying of gas.Product hydrogen enters product gas heat exchanger and carries out heat exchange with unstripped gas, then measure via orifice flowmeter FIC4,
Automatic valve V10 control enters product hydrogen surge tank, is supplied to hydrogen gas compressor.Oozing residual air entrance tail gas heat exchange is carried out with feed hydrogen
Heat exchange, then enters the lofty perch emptying of emptying pipeline via orifice flowmeter FIC3 metering, automatic valve V14 control.
Flow process is broadly divided into two large divisions：I.e. feed gas preprocessing purifies H with palladium film2.
(1) feed gas preprocessing
Raw hydrogen to be purified is then passed through accurate filter after automatic valve V2 control, flowmeter FIC2 metering, its filter
Core main material is micropore stainless steel bar, effectively can cut raw material H by shelves2The powder dust particle of middle entrainment.Then it is divided into two-way, a road is
Control flow through automatic valve V4, tail gas heat exchanger is entered, another Lu Weijing automatic valve V5 controls flow, enters product gas heat exchange
Device, the two-way gas after heat exchanger heat exchange converge the gas heating of entrance anti-explosion electric heater, by raw material H2It is warmed up to uniform temperature
When or so.
(2) palladium film purifying H2
Unstripped gas after pretreatment, enters palladium film purifier, under the motive force effect of pressure differential, 99.9999% super
Pure H2It is enriched with per-meate side, and CH4、O2、H2O、CO、CO2、N2Then intercepted by palladium film with objectionable impurities such as tetrahydrofurans and retain
In residual air is oozed, emptying pipe network is delivered to.Product hydrogen enters product gas heat exchanger and carries out heat exchange with unstripped gas, then via flow
Meter FIC4 metering, automatic valve V10 control enter product hydrogen surge tank, are supplied to user.
Above-described embodiment is only presently preferred embodiments of the present invention, not limits the scope of the invention according to this, therefore：All according to
The equivalence changes done by the structure, shape of the present invention, principle, all should be covered by within protection scope of the present invention.
Claims (10)
1. a kind of DCS automatically controls hydrogen purification system, including raw hydrogen feeding pipe, hydrogen purification pipeline, hydrogen storage hydrogen supply
Pipeline and blowdown piping one；Raw hydrogen feeding pipe includes valve V02 and accurate filter, valve V02 and accurate filter
Between be provided with valve V2；Nitrogen feed pipeline, the output end of nitrogen feed pipeline and precision is connected with raw hydrogen feeding pipe
The inlet end connection of filter, nitrogen feed pipeline are provided with valve V7；On hydrogen storage hydrogen supply pipeline by inlet end to outlet side successively
Blowdown piping two, valve V10 is provided with, blowdown piping two is provided with valve V13；Hydrogen purification pipeline be provided with product gas output pipe and
Tail gas output pipe；Blowdown piping one is provided with valve V14；It is characterized in that：Raw hydrogen feeding pipe and hydrogen purification pipeline
Between connected by heat exchanging pipe, be provided with anti-explosion electric heater between heat exchanging pipe and hydrogen purification pipeline；Heat exchanging pipe includes
The tail gas heat exchanger that is connected in parallel, product gas heat exchanger, the inlet end of two heat exchangers are defeated with raw hydrogen feeding pipe respectively
Go out end connection, outlet side to be connected with anti-explosion electric heater respectively；Product gas output pipe is connected with product gas heat exchanging pipe, tail gas
Output pipe is connected with tail gas heat exchanging pipe, product gas heat exchanging pipe after the product gas heat exchanger heat exchange with hydrogen storage hydrogen supply pipeline
Connection, tail gas heat exchanging pipe are connected with blowdown piping one after tail gas heat exchanger heat exchange.
2. DCS according to claim 1 automatically controls hydrogen purification system, it is characterised in that：The tail gas heat exchanger
Connecting line between the output end of inlet end and raw hydrogen feeding pipe is provided with valve V4 and temperature thermocouple TI1, tail gas
Between the inlet end of the output end after heat exchanging pipe heat exchange and blowdown piping one, pipeline is provided with temperature thermocouple TI5, controller
Uninterrupted by temperature approach regulating valve V4 of temperature thermocouple TI5 and temperature thermocouple TI1.
3. DCS according to claim 2 automatically controls hydrogen purification system, it is characterised in that：The product gas heat exchanger
Inlet end and the output end of raw hydrogen feeding pipe between connecting line be provided with valve V5 and temperature thermocouple TI2, produce
Output end after product gas heat exchanging pipe heat exchange and between the inlet end of hydrogen storage hydrogen supply pipeline pipeline be provided with temperature thermocouple TI7,
Controller is by the uninterrupted of temperature approach regulating valve V5 of temperature thermocouple TI7 and temperature thermocouple TI2.
4. the DCS according to any one of claims 1 to 3 automatically controls hydrogen purification system, it is characterised in that：Described explosion-proof
The pipeline that electric heater is connected with hydrogen purification pipeline is provided with valve V9.
5. DCS according to claim 4 automatically controls hydrogen purification system, it is characterised in that：The anti-explosion electric heater
It is provided with temperature thermocouple TI9, temperature thermocouple TI9 and can passes through controller control valve V2, V7, the switch of V9, V10, V13.
6. the DCS according to any one of claims 1 to 3 automatically controls hydrogen purification system, it is characterised in that：The raw material
It is big by the flow of controller control valve V2 that hydrogen feed tube road is provided with flowmeter FIC2 and pressure gauge PI2, flowmeter FIC2
Little, pressure gauge PI2 is by controller control valve V10 and the switch of V13.
7. the DCS according to any one of claims 1 to 3 automatically controls hydrogen purification system, it is characterised in that：The nitrogen
Feeding pipe is provided with the switch of flowmeter FIC1, flowmeter FIC1 by controller control valve V7.
8. the DCS according to any one of claims 1 to 3 automatically controls hydrogen purification system, it is characterised in that：The hydrogen storage
Hydrogen supply pipeline is provided with the uninterrupted of flowmeter FIC4, flowmeter FIC4 by controller control valve V10.
9. the DCS according to any one of claims 1 to 3 automatically controls hydrogen purification system, it is characterised in that：The emptying
Pipeline one is provided with the uninterrupted of pressure gauge PI4 and flowmeter FIC3, flowmeter FIC3 by controller control valve V14；Institute
State hydrogen storage hydrogen supply pipeline and be provided with pressure gauge PI5；Pressure difference regulating valve V10 of the controller by pressure gauge PI4 and pressure gauge PI5
Uninterrupted and valve V13 switch.
10. the DCS according to any one of claims 1 to 3 automatically controls hydrogen purification system, it is characterised in that：The product
Product gas output pipe is provided with temperature thermocouple.
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| CN110171805A (en) * | 2019-06-26 | 2019-08-27 | 中国计量大学 | A kind of detection method of hydrogen purification apparatus and its purifying hydrogen efficiency |
| CN112456440B (en) * | 2020-11-30 | 2022-01-07 | 北京航天试验技术研究所 | Hydrogen purification system |
| CN218478535U (en) * | 2022-08-31 | 2023-02-14 | 无锡隆基氢能科技有限公司 | Hydrogen purification tower and water electrolysis hydrogen production system |
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