CN110237645A - Electric heating adsorption column and its temperature control system - Google Patents
Electric heating adsorption column and its temperature control system Download PDFInfo
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- CN110237645A CN110237645A CN201810185909.7A CN201810185909A CN110237645A CN 110237645 A CN110237645 A CN 110237645A CN 201810185909 A CN201810185909 A CN 201810185909A CN 110237645 A CN110237645 A CN 110237645A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0454—Controlling adsorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/16—Hydrogen
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/204—Inorganic halogen compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/204—Inorganic halogen compounds
- B01D2257/2045—Hydrochloric acid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/55—Compounds of silicon, phosphorus, germanium or arsenic
- B01D2257/553—Compounds comprising hydrogen, e.g. silanes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/40096—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating by using electrical resistance heating
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Abstract
The present invention provides a kind of electric heating adsorption column, it includes the adsorption column ontology using hollow structure, the entire outer surface of adsorption column ontology is divided into multiple regions, one group of electrical heating elements at least partly covering the region is provided in each region, every group of electrical heating elements pass through one group of connector and are connected to one group of heat-transfer pipe positioned at adsorption column body interior, for heating when adsorbing column regeneration, each group heat-transfer pipe is used to even heat that each group electrical heating elements generate being transferred to adsorption column body interior each group electrical heating elements.Correspondingly, a kind of temperature control system of aforementioned electric heating adsorption column is provided.Electric heating adsorption column of the present invention can be avoided the problems such as existing inside and outside existing leakage of coiled adsorption column is not easy discovery in time, cost of investment is high.
Description
Technical field
The present invention relates to polycrystalline silicon reduction exhaust recovery technology fields, and in particular to a kind of electric heating adsorption column, and should
The temperature control system of electric heating adsorption column.
Background technique
Currently, the technique that polysilicon is prepared in domestic polycrystalline silicon production system mainly uses improved Siemens, the technique
Specifically, trichlorosilane and hydrogen are passed into reduction furnace, the reactive deposition polysilicon on 1100 DEG C of silicon core.
The reduction tail gas come out from reduction furnace can enter exhaust gas recovery system.The material that exhaust gas recovery system mainly recycles has
Hydrogen, hydrogen chloride and chlorosilane adopt the technology that dry method tail gas recycle.Dry method solvent recovery technology from vent gas is specifically, by four
Grade cooling separates gas phase fixed gas with liquid-phase chlorosilane；The gas phase fixed gas isolated enters absorption tower, for self solving
The lean solution chlorosilane for analysing tower absorbs the impurity such as hydrogen chloride therein, using obtaining pure hydrogen after adsorption cleaning and return to
Polycrystalline reduction process, to continue to produce polysilicon；The liquid-phase chlorosilane isolated enters Analytic Tower and isolates light component chlorination
Hydrogen, and lean solution chlorosilane is obtained, then lean solution chlorosilane is sent to impurity such as absorption tower absorbing hydrogen chlorides.By dry method tail gas recycle
Hydrogen, hydrogen chloride and the chlorosilane that technique is separated be sent to respectively upstream and downstream process use, thus realize reduction tail gas from
Open type production development is to closed cycle.
Production of polysilicon closed cycle is realized in the production process of exhaust gas recovery system, has reached recovered material, drop
The purpose of low production cost.The hydrogen wherein recycled is mainly used for reducing polysilicon production, therefore to recycling hydrogen quality requirements
It is higher.
Hydrogen is recycled before returning to polycrystalline reduction process, needs to inhale wherein most impurity by absorptive unit
It receives completely, but the chloride there are still micro hydrogen chloride from the hydrogen that absorptive unit exports and containing boron phosphorus, this part is miscellaneous
Matter will directly affect the quality of the polysilicon of production, need further to remove, and the mode of removal is mainly operated by absorbing unit
To realize.
The equipment that absorbing unit operates with is generally adsorption column, is filled with adsorbent in the column of adsorption column.Adsorption column is answered
The state of used time is divided into use, regeneration and spare, these three states switch mutually.Adsorption column is first in use state, uses
Adsorption column reaches saturation after a certain period of time, needs to carry out heating regeneration to it, the impurity adsorbed in adsorbent is released, then
Adsorption column after the completion of life need to cool down, to reach stand-by state, then be put into again using shape as needed
State circuits sequentially.Most important state is the regeneration of adsorption column in this cyclic process, because regenerated effect will directly affect
To the adsorption effect of impurity in hydrogen it is used next time when.
Currently, common adsorption column is the adsorption column with inside and outside coil pipe, it is to its regeneration method after adsorption saturation, it will
The inside and outside coil pipe that hot water is passed through adsorption column heats it, is heated to be passed through cold water to internal and external disk pipe again after certain temperature with reality
Now cool down.The desalted water that adsorption column heating/cooling uses is provided by adsorption column water circuit system, and water circuit system is a closed cycle
System includes heat exchanger and water pump, cold water/delivery to heat exchanger is exchanged heat by water pump, and absorption is entered after heat exchange
The inside and outside coil pipe of column cool down/heat, and the water after cooling/heating is complete enters back into pump entrance, conveys after water pump boosts
To heat exchanger, use is circuited sequentially.
However, it is found by the inventors that existing adsorption plant at least has the following deficiencies:
1, the desalted water of long-term closed cycle is unfavorable for the purification of water quality, will lead to suction when fouling, enrichment impurity in water
Attached column water line block and the pump abrasion of adsorption column lime set, increase maintenance of equipment cost.
2, adsorption column water route occurs leaking and is not easy to be found when using, and water directly leaks to inside adsorption column and process gas
Contact, is brought into polycrystalline reduction process, directly affects polysilicon quality, substantially increase production and quality cost；
3, adsorption column is arranged inside and outside coil pipe water flowing and heats to adsorption column, there are heating dead angle, leads to heat point occur
The non-uniform phenomenon of cloth, and temperature difference is larger up and down for adsorption column, reduces to the regeneration effect of adsorbent.
4, adsorption column using when also need mating corresponding water system equipment, equipment investment cost is higher.
Summary of the invention
The technical problem to be solved by the present invention is to for the drawbacks described above in the presence of the prior art, provide a kind of electricity plus
The temperature control system of hot adsorption column and the electric heating adsorption column is let out to avoid existing for existing inside and outside coiled adsorption column
Leakage be not easy in time find,
The problems such as cost of investment is high.
Solving technical solution used by present invention problem is:
The present invention provides a kind of electric heating adsorption column comprising using the adsorption column ontology of hollow structure, adsorption column ontology
Entire outer surface be divided into multiple regions, one group of electric heating at least partly covering the region is provided in each region
Element, every group of electrical heating elements pass through one group of connector and are connected to one group of heat-transfer pipe positioned at adsorption column body interior, each group
The even heat that electrical heating elements are used to generate each group electrical heating elements for heating when adsorbing column regeneration, each group heat-transfer pipe
It is transferred to adsorption column body interior.
Optionally, the multiple regions that the adsorption column body outer surface divides are interspersed in the entire outer of adsorption column ontology
Surface.
Optionally, every group of electrical heating elements include being uniformly distributed in adsorption column ontology along the length direction of adsorption column ontology
Multiple electrical heating elements in corresponding region that outer surface divides.
Optionally, the connector uses casing, and the through-hole that described sleeve pipe passes through on adsorption column ontology stretches to adsorption column
Body interior, end positioned at adsorption column body exterior of the end of each electrical heating elements with a casing removably connect
Connect, and each heat-transfer pipe be inserted into a casing in the end of adsorption column body interior.
Optionally, end positioned at adsorption column body exterior of the end of each electrical heating elements with a casing passes through
Flanged joint.
Optionally, described sleeve pipe is welded on adsorption column ontology.
Optionally, being not inserted into the end of casing for the heat-transfer pipe is blocked using blind plate；
The heat-transfer pipe uses finned tube.
Optionally, the adsorption column ontology is internally provided with latticed support, is used to support in adsorption column ontology
The each group heat-transfer pipe in portion.
The present invention also provides a kind of temperature control systems of above-mentioned electric heating adsorption column, and the temperature control system includes m
Root temperature probe, n temperature collecting module, PLC control system, controllable silicon power regulator and n anti-explosion electric heater, wherein m and
N is positive integer, and m > n, n are identical as the region quantity that adsorption column body outer surface divides；The m root temperature probe is by outside extremely
It is inside inserted into adsorption column body interior, and m root temperature probe is divided into n group, every group of temperature probe is arranged at adsorption column sheet
In the region that external surface divides, each temperature collecting module is connect with one group of temperature probe；The n temperature acquisition
Module is connect with m root temperature probe and PLC control system respectively, in each region for dividing adsorption column body outer surface
The actual temperature signal that each group temperature probe measures is transferred to PLC control system；The PLC control system passes through thyristor regulating
Function device is connect with n anti-explosion electric heater, and each anti-explosion electric heater is connect with one group of electrical heating elements；According to adsorption column sheet
Each region that external surface divides carries out region division to adsorption column body interior, so that the division of adsorption column body interior is every
A region is corresponding with the region that adsorption column body outer surface divides, and adsorption column sheet is preset in the PLC control system
The preferred temperature range in each region that internal portion divides, in the adsorption column ontology for receiving each temperature collecting module output
Portion divide each region actual temperature signal after, judge adsorption column body interior divide each region actual temperature whether
Within the scope of corresponding preferred temperature, is closed if so, then controlling corresponding anti-explosion electric heater, add corresponding electrical heating elements
Heat is opened if not, controlling corresponding anti-explosion electric heater, so that corresponding electrical heating elements heating, to heat adsorption column
The corresponding region that body interior divides.
Optionally, the temperature control system further includes interchanger and electric current display instrument, the interchanger respectively with PLC
Control system is connected with electric current display instrument, each group temperature probe in each region for dividing adsorption column body outer surface
The actual temperature signal of acquisition is converted into the identifiable current signal of electric current display instrument, to show in electric current display instrument
The actual temperature value in each region that adsorption column body interior divides.
The utility model has the advantages that
Compared to existing inside and outside coiled adsorption column, the regenerative process of electric heating adsorption column of the present invention is added using electricity
Hot mode has thoroughly completely cut off the possibility that process gas (impure hydrogen) is contacted with water, has avoided suction instead of water heating method
Attached column reveals the influence to hydrogen quality and polycrystalline reduction process products obtained therefrom；And electrical heating elements are distributed in adsorption column sheet
On the entire outer surface of body, so that adsorption column body interior uniform heat distribution；
Furthermore, it is not necessary that mating water system equipment, equipment investment cost are lower.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the electric heating adsorption column that the embodiment of the present invention 1 provides；
Fig. 2 is the structural schematic diagram of the temperature control system for the electric heating adsorption column that the embodiment of the present invention 2 provides.
In figure: 1- adsorption column ontology；2- hydrogen inlet；3- hydrogen outlet；4- heat-transfer pipe；5- electrical heating elements；
6- manhole；7- adsorbent bleed outlet；8- temperature probe；100- electric heating adsorption column；200- temperature collecting module；300-
PLC control system；400- controllable silicon power regulator；500- anti-explosion electric heater；600- interchanger；700- electric current display instrument
Table；800-DCS display interface.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, with reference to the accompanying drawings and examples to this
Invention is described in further detail.
Embodiment 1:
As shown in Figure 1, the present embodiment provides a kind of electric heating adsorption column, including the adsorption column ontology 1 using hollow structure.
The bottom of the adsorption column ontology 1 is provided with hydrogen inlet 2 and adsorbent bleed outlet 7, top are equipped with hydrogen outlet 3 and manhole 6.
The adsorbent bleed outlet 7 is used to be discharged the adsorbent of adsorption saturation from adsorption column ontology 1；The manhole 6 is used for absorption
The inside of column ontology 1 loads novel sorbents and overhaul of the equipments.
In fact, adsorption column ontology 1 is made of cylinder, upper cover and lower head, and upper cover is arranged at the top of cylinder, under
End socket setting is in cylinder body bottom, then hydrogen inlet 2 and adsorbent bleed outlet 7 are arranged on upper cover, hydrogen outlet 3 and manhole 6
It is arranged on lower head.
The entire outer surface of adsorption column ontology 1 is divided into multiple regions, and one group of at least portion is provided in each region
Divide the electrical heating elements 5 for covering the region, in other words, the corresponding one group of electricity in each region that adsorption column body outer surface divides adds
Thermal element, every group of electrical heating elements 5 are connected to one group of heat-transfer pipe 4 inside adsorption column ontology 1 by one group of connector,
Each group electrical heating elements 5 are used for the heat for generating each group electrical heating elements 5 for heating when adsorbing column regeneration, each group heat-transfer pipe 5
Amount is transferred uniformly into inside adsorption column ontology 1.It should be noted that, although showing six regions in Fig. 1, but the present invention couple
The quantity in region and position and without limitation.
In the present embodiment, the multiple regions that 1 outer surface of adsorption column ontology divides are interspersed in the entire of adsorption column ontology 1
Outer surface.
It should be noted that electrical heating elements 5 are not distributed only on the cylinder of adsorption column ontology, be also distributed in upper cover with
On lower head, to realize being evenly heated for adsorption column body interior.Moreover, electrical heating elements are set at upper lower head, it can be with
Heat the filler away from equipment barrel more nearby.
Every group of electrical heating elements 5 include being uniformly distributed in 1 appearance of adsorption column ontology along the length direction of adsorption column ontology 1
Multiple electrical heating elements 5 in corresponding region that face divides.
In the present embodiment, the connector uses casing, and the through-hole that described sleeve pipe passes through on adsorption column ontology 1 stretches to suction
Inside attached column ontology 1, and it is welded on adsorption column ontology 1.It is inhaled with being located at for casing the end of each electrical heating elements 5
End outside attached column ontology 1 is detachably connected, in the operation of electric heating adsorption column, if some/certain electrical heating elements
Damage, then do not need parking can replace in time, and each heat-transfer pipe 4 be inserted into a casing be located at adsorption column ontology 1
In internal end.
More preferably, the end of each electrical heating elements 5 is logical with the end of a casing being located at outside adsorption column ontology 1
Cross flanged joint.
Being not inserted into the end of casing for the heat-transfer pipe 4 is blocked using blind plate；The heat-transfer pipe 4 preferably uses fin
Pipe, and fin is welded on outer surface of tube body.
The settable latticed support in the inside of the adsorption column ontology 1, is used to support each inside adsorption column ontology 1
Group heat-transfer pipe 4.
The application method of electric heating adsorption column described in the present embodiment is as follows: making the hydrogen containing impurity such as hydrogen chloride, chlorosilanes
Gas enters adsorption column body interior by the hydrogen inlet of the adsorption column body bottom portion of electric heating adsorption column, and conveying is worn from the bottom up
The adsorbent of adsorption column body interior is crossed, the impurity such as hydrogen chloride, chlorosilane that hydrogen contains in the process are adsorbed by adsorbent
Then removal, the hydrogen after being purified export purified hydrogen to downstream system from the hydrogen outlet of adsorption column bodies top
System.
For restoring exhaust gas recovery system, three electric heating adsorption columns are generally required, the using and the reserved one regenerate, any
Moment always has an adsorption column to be in adsorption process, specially by the impure hydrogen of hydrogen inlet feeding of adsorption column, then from
Hydrogen outlet exports purified hydrogen and transports to down-stream system.Every adsorption column successively undergoes absorption, heating in different time
It is regeneration, cooling spare and etc..It after the adsorbent adsorption saturation of adsorption column body interior, needs to carry out it heating regeneration, inhales
The heating regeneration of attached column provides heat by electrical heating elements and heat-transfer pipe, while logical to adsorption column body interior by hydrogen outlet
Enter regeneration gas (pure hydrogen) to blow out the impurity adsorbed in adsorbent, and obtain regeneration off gases, wherein regeneration gas can adopt
Hydrogen after being purified with refluxing portion, regeneration off gases are then expelled to chlorosilane recovery system through pipeline, and regeneration temperature general control exists
150 DEG C or more, the reproduction time depending on heating time, is heated to certain temperature to adsorption column body interior and adsorbs after the time
Agent regeneration is completed, and heating work is stopped, and carries out cooling processing to adsorption column, and temperature-fall period is used from hydrogen outlet to adsorption column sheet
Internal portion is passed through the purified hydrogen of low temperature and is discharged from hydrogen inlet, guarantees low temperature hydrogen in the circulation of adsorption column body interior and band
Walk heat.The adsorption column that regeneration is completed can be prepared to enter into next adsorption process after pressurising.
It is connect in conclusion electric heating adsorption column described in the present embodiment has thoroughly completely cut off process gas (impure hydrogen) with water
The possibility of touching avoids influence of the adsorption column leakage to hydrogen quality and polycrystalline reduction process product；Entire adsorption column ontology
Internal uniform distribution of temperature field, it is ensured that entire filling batch heating temperature >=200 DEG C, and maximum temperature is effectively controlled
System, on carrier performance without influence；Heat exchange efficiency is high, ensure that enough heat exchange areas；Damage is possible in electrical heating elements
In the case of, it can be achieved that not parking replacement electrical heating elements, enable electric heating adsorption column continuous production；Guarantee entire adsorption column sheet
Internal adsorbent (active carbon) can be sufficient filling with, and air-flow is without ill effects such as short circuit, wall streams.
Embodiment 2:
As depicted in figs. 1 and 2, the present embodiment provides a kind of controls of the temperature of electric heating adsorption column described in embodiment 1 is
System comprising m root temperature probe 8, n temperature collecting module 200, PLC control system 300, controllable silicon power regulator 400 and n
Anti-explosion electric heater 500, wherein m and n is positive integer, and the region quantity that m > n, n and 1 outer surface of adsorption column ontology divide
Identical, in other words, 1 outer surface of adsorption column ontology has divided how many a regions, with regard to how many temperature collecting module 200 and explosion-proof
Electric heater 500.
As shown in Figure 1, the m root temperature probe 8 is inserted into from outside to inside inside adsorption column ontology 1, and being deep into can
The depth contacted with adsorbent, to monitor the temperature of adsorption column body interior, and m root temperature probe 8 is divided into n group, and every group
Temperature probe 8 is arranged in a region of 1 outer surface of adsorption column ontology division, and each temperature collecting module 200 is with one
Group temperature probe 8 connects, and in other words, every group of temperature probe corresponds to a region of adsorption column body outer surface division, and every
The corresponding temperature collecting module of group temperature probe and one group of electrical heating elements.
The n temperature collecting module 200 is connect with m root temperature probe 8 and PLC control system 300 respectively, for that will inhale
The actual temperature signal that each group temperature probe 8 in each region that 1 outer surface of attached column ontology divides measures is transferred to PLC control
System 300.The PLC control system 300 is connect by controllable silicon power regulator 400 with n anti-explosion electric heater 500, Mei Gefang
Quick-fried electric heater 500 is connect with one group of electrical heating elements 5.
Region division is carried out to adsorption column body interior according to each region that adsorption column body outer surface divides, so that inhaling
Each region that attached column body interior divides is corresponding with the region that adsorption column body outer surface divides, then each group thermometric
Probe measurement be exactly adsorption column body interior divide each region actual temperature signal.It is pre- in the PLC control system 300
Preferred temperature range equipped with each region that adsorption column body interior divides, for receive each temperature collecting module 200 defeated
After the actual temperature signal in each region that adsorption column body interior out divides, each region that adsorption column body interior divides is judged
Actual temperature whether within the scope of corresponding preferred temperature, closed if so, then controlling corresponding anti-explosion electric heater 500, no
Corresponding electrical heating elements 5 are heated, are opened if not, controlling corresponding anti-explosion electric heater 500, so that corresponding electric heating
Element 5 heats, to heat the corresponding region of adsorption column body interior division, and then realizes adsorption column body interior zone temperature
Control, the temperature and the regenerated temperature of adsorption column and regeneration effect that guarantee adsorption column works normally, improves adsorption column and adsorbent
Service life, improve hydrogen recovery rate.
As shown in Fig. 2, the temperature control system further includes interchanger 600 and electric current display instrument 700, the interchanger
600 connect with PLC control system 300 and electric current display instrument 700 respectively, each for dividing 1 outer surface of adsorption column ontology
The actual temperature signal that each group temperature probe 8 in region measures is converted into the identifiable electric current of electric current display instrument 700 letter
Number, to show the actual temperature value in each region divided inside adsorption column ontology 1 in electric current display instrument 700.Wherein, electric
Existing digital display ammeter can be used in stream display instrument 700.
As shown in Fig. 2, the temperature control system further includes DCS display interface 800, connect with PLC control system 300
Connect, for the information that real-time display PLC control system 300 receives, and by PLC control system 300 carry out respective handling after
Obtained information.
The workflow of temperature control system described in the present embodiment is as follows:
All anti-explosion electric heaters are opened, all electrical heating elements are begun to warm up, the heat of generation is equal by heat-transfer pipe
It is transferred to adsorption column body interior evenly, to heat the adsorbent of adsorption column body interior, realizes the heating regeneration of adsorption column.
Meanwhile the actual temperature situation in each region of adsorption column body interior division carries out real-time measurement by each group temperature probe, and passes through
Obtained actual temperature signal is passed into PLC control system after being acquired by each temperature collecting module, PLC control system is logical
It crosses interchanger and actual temperature signal is converted into the identifiable current signal of electric current display instrument, thus in electric current display instrument
It is shown, PLC control system is connect by controllable silicon power regulator with each anti-explosion electric heater, to control each anti-explosion electric heater
Switch, thus realize adsorption column body interior zone temperature control；Operator can also divide according to adsorption column body interior
The actual temperature situation in each region manually adjust electric current, to control the power of controllable silicon power regulator, to control each anti-explosion electric
The switch of heater, and then control the temperature in each region that body interior divides in adsorption column.
In conclusion temperature control system described in the present embodiment has the automatic ability detected and automatically control, thus real
The power control of (electrical heating elements), and the temperature feedback according to temperature probe are now loaded to electric heating adsorption column temperature control device,
The subregion thermostatic control of controlled system (electric heating adsorption column) is realized by the internal algorithm of PLC control system.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, essence of the invention is not being departed from
In the case where mind and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a kind of electric heating adsorption column, which is characterized in that including using hollow structure adsorption column ontology, adsorption column ontology it is whole
A outer surface is divided into multiple regions, and one group of electric heating member at least partly covering the region is provided in each region
Part, every group of electrical heating elements pass through one group of connector and are connected to one group of heat-transfer pipe positioned at adsorption column body interior, each group electricity
For heating when adsorbing column regeneration, each group heat-transfer pipe is used to pass even heat that each group electrical heating elements generate heating element
It is handed to adsorption column body interior.
2. electric heating adsorption column according to claim 1, which is characterized in that the adsorption column body outer surface divides more
A region is interspersed in the entire outer surface of adsorption column ontology.
3. electric heating adsorption column according to claim 1, which is characterized in that every group of electrical heating elements include along adsorption column
The length direction of ontology is uniformly distributed in multiple electrical heating elements in the corresponding region of adsorption column body outer surface division.
4. electric heating adsorption column according to claim 1, which is characterized in that the connector uses casing, described sleeve pipe
Through-hole on adsorption column ontology stretches to adsorption column body interior, the end of each electrical heating elements with casing
End positioned at adsorption column body exterior is detachably connected, and each heat-transfer pipe be inserted into a casing be located at adsorption column
In the end of body interior.
5. electric heating adsorption column according to claim 4, which is characterized in that the end of each electrical heating elements with one
The end positioned at adsorption column body exterior of casing passes through flanged joint.
6. electric heating adsorption column according to claim 4, which is characterized in that described sleeve pipe is welded on adsorption column ontology.
7. electric heating adsorption column according to claim 4, which is characterized in that the heat-transfer pipe is not inserted into the end of casing
Portion is blocked using blind plate；The heat-transfer pipe uses finned tube.
8. electric heating adsorption column described in any one of -7 according to claim 1, which is characterized in that the adsorption column ontology it is interior
Portion is provided with latticed support, is used to support each group heat-transfer pipe positioned at adsorption column body interior.
9. a kind of temperature control system of such as electric heating adsorption column of any of claims 1-8, which is characterized in that institute
Stating temperature control system includes m root temperature probe, n temperature collecting module, PLC control system, controllable silicon power regulator and n anti-
Quick-fried electric heater, wherein m and n is positive integer, and m > n, n are identical as the region quantity that adsorption column body outer surface divides；Institute
It states m root temperature probe and is inserted into adsorption column body interior from outside to inside, and m root temperature probe is divided into n group, every group of thermometric is visited
Head is arranged in a region of adsorption column body outer surface division, and each temperature collecting module connects with one group of temperature probe
It connects；The n temperature collecting module is connect with m root temperature probe and PLC control system respectively, is used for adsorption column ontology appearance
The actual temperature signal that each group temperature probe in each region that face divides measures is transferred to PLC control system；The PLC control
System processed is connect by controllable silicon power regulator with n anti-explosion electric heater, and each anti-explosion electric heater is first with one group of electric heating
Part connection；Region division is carried out to adsorption column body interior according to each region that adsorption column body outer surface divides, so that inhaling
Each region that attached column body interior divides is corresponding with the region that adsorption column body outer surface divides, the PLC control
The preferred temperature range in each region of adsorption column body interior division is preset in system, for receiving each temperature acquisition mould
After the actual temperature signal in each region that the adsorption column body interior of block output divides, judge that adsorption column body interior divides each
Whether the actual temperature in region closes, no within the scope of corresponding preferred temperature if so, then controlling corresponding anti-explosion electric heater
Corresponding electrical heating elements are heated, are opened if not, controlling corresponding anti-explosion electric heater, so that corresponding electrical heating elements
Heating, to heat the corresponding region of adsorption column body interior division.
10. temperature control system according to claim 9, which is characterized in that the temperature control system further includes exchange
Machine and electric current display instrument, the interchanger are connect with PLC control system and electric current display instrument respectively, are used for adsorption column sheet
The actual temperature signal of each group temperature probe acquisition in each region that external surface divides, which is converted into electric current display instrument, to be known
Other current signal, to show the actual temperature value in each region that adsorption column body interior divides in electric current display instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN110762934A (en) * | 2019-11-18 | 2020-02-07 | 江苏双良低碳产业技术研究院有限公司 | Heat exchange device and method of adsorption system |
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