CN105126708A - Hydrogen deoxidation isothermal multitubular reactor - Google Patents
Hydrogen deoxidation isothermal multitubular reactor Download PDFInfo
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- CN105126708A CN105126708A CN201510453177.1A CN201510453177A CN105126708A CN 105126708 A CN105126708 A CN 105126708A CN 201510453177 A CN201510453177 A CN 201510453177A CN 105126708 A CN105126708 A CN 105126708A
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- involute
- perforated plate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
The invention relates to a hydrogen deoxidation isothermal multitubular reactor. Reaction gas undergoes an exothermic reaction in reaction tubes, and heat is delivered to a fed cooling agent by a pipe wall and is synchronously taken away so that a reaction temperature is greatly reduced than a reaction temperature in other heat insulation way and thus the amount of fed circulation gas for controlling a reaction temperature is greatly reduced and cycle pressure pump power is reduced. The heat of the discharged coolant can be used for other purposes. The tubes and channels are arranged along involute loci based on a central tube as a basic circle, and the adjacent involute-type guide plate uniformly-arranged tubes form an independent channel so that cooling fluid in each channel can flow in an order. According to particular case, the shell side can be divided into several sides by the baffle plates so that heat transfer efficiency is improved and the multitubular reactor is compact.
Description
Technical field
The present invention relates to a kind of isothermal shell and tube reactor for hydrogen deoxidation, heat of reaction is passed to the outer cooling agent of tubulation by tubulation wall by this reactor, and the aligning method, the runner that the invention still further relates to reactor heat transfer tubulation are arranged.
Background technology
For effectively utilizing the waste gas, the off-gas that are rich in hydrogen over nearly ten or twenty year, be used widely with the heat-insulating deoxidation reactor that palladium catalyst is housed, this device is independently arranged deoxidation reactor and reaction cooler, namely after processed gas and circulating air mixing, enter adiabatic reactor, carry out deoxygenation.Reaction heat makes reaction gas temperature raise, and the reaction gas of high temperature enters cooler again, and cooled reaction gas delivers to lower operation.Because of hydrogen and oxygen mixture O
2content has entered explosive range 5 ~ 95.5%, its minimum blast temperature only 400
0c, for ensureing production safety, reaction gas should away from blast area ， And temperature of reactor no more than 350
0c, for this reason, must be back to unstripped gas by the pressurized with hydrogen after a large amount of deoxidation, both add operating cost and investment, and also reduced the utilization rate of reaction heat.In addition, the arrangement mode of cooler tubulation all presses equilateral triangle or concentric arrays, arranges some deflection plates in shell, often locate deflection plate and have runner dead angle, dead angle place heat transfer coefficient is extremely low, and heat transfer area is increased, the floor space of this process unit is many, and investment, operating cost is high.
Summary of the invention
For the defect that above-mentioned prior art exists, the technical problem to be solved in the present invention is to provide a kind of isothermal shell and tube reactor of hydrogen deoxidation, this reactor is under the prerequisite significantly reducing (even not using) circulating air, the Appropriate application of temperature of reactor and reaction heat can be controlled simultaneously, the compact dimensions of device, heat transfer coefficient is high, realizes fluid olderly flowage.
For solving the problems of the technologies described above, the isothermal reactor of collection reaction, heat transfer integration changed into by traditional adiabatic reactor by the present invention, namely in tubulation, loading catalyst carries out deoxygenation, enter cooling agent outside tubulation and synchronously remove reaction heat, deoxygenation temperature is effectively controlled in tolerance band.Reaction gas of the present invention enters the tubulation on upper perforated plate, release heat through tube wall conduct rapidly to pipe outer cooling agent, in reactor everywhere temperature equalization, stablize, controlled.Cooling agent enters the outer wall annular sleeve outside pipe, enter involute runner outer rim and flow to mesotube, then baffling enters middle shell side from cinclides, by interior flow to outer rim manifold trunk after leave reactor, heat can use it for anything else.Cooled reaction gas, through being connected to the tubulation of lower perforated plate, obtains required high-purity reaction gas from reaction gas outlet.
Using the basic circle of reactor mesotube as involute, tubulation adopts involute arrangement, also be the runner of cooling agent, datum circumference is divided into some parts, involute is made one by one again on Along ent, even cloth tubulation on every bar involute, until whole for reactor tubulation has been arranged, the terminal location of involute has been the internal diameter of reactor tank body.In order to improve heat transfer coefficient, ensure that cooling agent all flows by ordered flow mode with suitable flow velocity, And, tubulation termination is through at the hole of upper perforated plate and lower perforated plate and fixes, and often organizes tubulation and lines up an independent involute runner by adjacent baffle, wall circular cover is affixed on tank wall outside, opens liquid stream cinclides.Coolant flow size is looked in tank body, add some annular deflection plates, to guarantee that cooling agent has suitable flow velocity in shell, deflection plate upper and lower surface and upper and lower tube sheet corresponding opening one side involute connected in star, other fixture can also be adopted, in order to install light sheet material deflector.
According to safety requirements and catalyst maximum operating temperature determination reaction gas reflux ratio n.To the present embodiment, exothermic heat of reaction is:
H
2+ 1/2O
2→ H
2o(gas)-58.615kc/mol
To adiabatic reaction speech, every 1%(body in reaction gas) O
2corresponding consumption 2%(body) H
2, reaction temperature raises 150
0c is many, if containing O in unstripped gas
2reach 4.5%, reaction gas temperature will rise to 700
0c, exceeds safety in production acceptable temperature range.Production permit temperature 350 is no more than for controlling reaction temperature
0c, containing O in unstripped gas
2amount answers < 2.0%, and unstripped gas needs returning part, and oneself takes off O
2h
2gas.
Reflux ratio n=V returns/and V is former=and (former-X of X mixes)/X mixes
If X is former=and 4.5%, X mixed=2.0%, then n=1.25, then reflux H
2raw material H
21.25 times, H
2conveying all with the water ring pump that mechanical efficiency is lower, power consumption is very large.According to isothermal reactor of the present invention, to above-mentioned operating mode, only make to enter O in reactor gaseous mixture
2content is down to 4% safe range, then reflux ratio n=(4.5%-4%)/4%=0.125, capacity of returns is only 1/10 of adiabatic reactor.
If the reaction gas of higher temperature discharged by tubulation, directly in device bottom, Water spray cooler can also be installed, carry out heat exchange at interpolation filling surface, obtain higher heat exchange efficiency.
It is simple that the present invention has structure, safe and reliable, do not consume the advantages such as the energy.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Fig. 1 is the isothermal shell and tube reactor generalized section of hydrogen deoxidation of the present invention.
Fig. 2 is the structural perspective of inside reactor shown in Fig. 1.
Detailed description of the invention
Fig. 1 is the isothermal shell and tube reactor profile of hydrogen deoxidation of the present invention.Upper perforated plate 3 is riveted or be welded on to tubulation 1 with on lower perforated plate 7, two layers of annular deflection plate 5 are added in shell, every two row's involute tubulations 2 form a runner by adjacent baffle 1, some runners lead in the coolant flow passages of reactor tank body 9 outer wall annular sleeve 10, cooling water selected by this device cooling agent, also can adopt conduction oil (240
0c) replace, to obtain the higher heat of energy level.For making reactor heat effectively utilize, this device outer wall annular sleeve 10 covers reactor tank body 9 place and opens liquid flow hole 6.Reaction gas enters the tubulation 2 tube sheet from 11, the palladium catalyst of filling deoxidation in tubulation 2, and lower perforated plate arranges Kitchen sifter 87 times, deoxygenation is carried out at this, release heat to conduct rapidly to the outer cooling agent of pipe through tube wall, in whole reaction tube, temperature is consistent substantially.Cooling agent enters reactor outer wall annular sleeve from 33, then enters each involute runner from cinclides 6, and after baffling, then flow out from 44, high-purity hydrogen goes out from 22.Also have another kind of embodiment: the reaction gas after deoxidation enters cloth shower pipe cool water shower bottom filling surface, go out from 22 again after reaction gas is cooled.
Reactor coolant schematic flow sheet is also comprised in Fig. 1.The flow process number of turning back of cooling agent is determined on a case-by-case basis, and guarantees that fluid is in turbulence state.Cooling water enters from 33, enters upper and lower two journeys by cinclides 6, from outside to inside, from intermediate layer from inside to outside, flows out from 44 through cinclides 6 then.
Fig. 2 is the arrangement of reactor tubulation and internal structure, the even cloth of tubulation 2 is on the involute done for basic circle by mesotube 4, spacing about 2.5 times of caliber And of adjacent involute be able to the circumference of decile central tube, on tube sheet, pipe number will meet the pipe number (integer) needed for reaction, the heat transfer area of tubulation will meet the thermal transmission requirement of reactor, and two arrangement pipes form an involute-type runner.Upper perforated plate 3 illustrates that a part can be found out, tubulation 2 end is fixed through upper perforated plate 3 perforate.
The adiabatic reactor that the present invention is not limited to hydrogen deoxidation reforms isothermal reactor into, is equally applicable to the transformation of other gas purification or reactor, and comprise and adopt traditional tubulation arrangement mode, such conversion all drops within protection scope of the present invention.
Claims (3)
1. a hydrogen deoxidation shell and tube isothermal reactor, its version is for unite two into one adiabatic reactor and shell and tube cooler, comprise the arrangement of tubulation, runner, it is characterized in that: described reactor enters the tubulation (2) upper perforated plate (3) from reaction gas inlet (11), tubulation (2) interior loading catalyst carries out deoxygenation, release heat through tube wall conduct rapidly to pipe outer cooling agent, in reactor everywhere temperature equalization, stablize, controlled; Described cooling agent enters the outer wall annular sleeve (10) of reactor tank body (9) from coolant inlet (33), enter involute runner outer rim from cinclides (6) and flow to mesotube (4), collected by the interior outer rim that flow to after deflection plate (5) baffling, then flow out from coolant outlet (44); Cooled reaction gas, through being connected to the tubulation (2) of lower perforated plate (7), obtains required reaction gas from reaction gas outlet (22).
2. according to hydrogen deoxidation shell and tube isothermal reactor described in claim 1, it is characterized in that: described tubulation (2) termination is through at the hole of upper perforated plate (3) and lower perforated plate (7) and fixes, deflection plate (5) is added in shell, often organize tubulation (2) and line up an independent flow passage by adjacent involute shape deflector (1), wall circular cover (10) is affixed on tank body (9) wall outside, opening liquid stream cinclides (6), the basic circle that mesotube (4) is involute, is also the runner of cooling agent.
3. according to hydrogen deoxidation shell and tube isothermal reactor described in claim 1, it is characterized in that: described deflection plate (5) upper and lower surface has involute connected in star, upper perforated plate (3) and lower perforated plate (7) corresponding opening one side involute connected in star, in order to down dress light sheet material deflector (1), adjacent baffle (1) spacing is equal, be able to the circumference of decile central tube, form involute runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510453177.1A CN105126708A (en) | 2015-07-29 | 2015-07-29 | Hydrogen deoxidation isothermal multitubular reactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510453177.1A CN105126708A (en) | 2015-07-29 | 2015-07-29 | Hydrogen deoxidation isothermal multitubular reactor |
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| CN105126708A true CN105126708A (en) | 2015-12-09 |
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|---|---|---|---|
| CN201510453177.1A Pending CN105126708A (en) | 2015-07-29 | 2015-07-29 | Hydrogen deoxidation isothermal multitubular reactor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107305104A (en) * | 2016-04-19 | 2017-10-31 | 江苏科力普汽车部件有限公司 | A kind of circular radiator core body |
| CN110846482A (en) * | 2019-12-28 | 2020-02-28 | 溧阳市永恒热处理有限公司 | Energy-saving quenching chute |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2116185U (en) * | 1992-03-09 | 1992-09-16 | 济南市热管应用技术研究所实验厂 | Spiral low-temperature heat exchanger |
| CN201295608Y (en) * | 2008-02-04 | 2009-08-26 | 上海戊正工程技术有限公司 | Tube array type self-equilibrating isothermal reactor |
-
2015
- 2015-07-29 CN CN201510453177.1A patent/CN105126708A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2116185U (en) * | 1992-03-09 | 1992-09-16 | 济南市热管应用技术研究所实验厂 | Spiral low-temperature heat exchanger |
| CN201295608Y (en) * | 2008-02-04 | 2009-08-26 | 上海戊正工程技术有限公司 | Tube array type self-equilibrating isothermal reactor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107305104A (en) * | 2016-04-19 | 2017-10-31 | 江苏科力普汽车部件有限公司 | A kind of circular radiator core body |
| CN110846482A (en) * | 2019-12-28 | 2020-02-28 | 溧阳市永恒热处理有限公司 | Energy-saving quenching chute |
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Application publication date: 20151209 |
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