CN108516520A - A kind of useless refining methanol reforming hydrogen manufacturing method and device - Google Patents

A kind of useless refining methanol reforming hydrogen manufacturing method and device Download PDF

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Publication number
CN108516520A
CN108516520A CN201810542918.7A CN201810542918A CN108516520A CN 108516520 A CN108516520 A CN 108516520A CN 201810542918 A CN201810542918 A CN 201810542918A CN 108516520 A CN108516520 A CN 108516520A
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methanol
useless
hydrogen manufacturing
reforming hydrogen
steam
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尹显飞
赵楠
初凤光
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Shanghai Evian Industry Technology Co Ltd
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Shanghai Evian Industry Technology Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/02Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
    • C01B3/32Production 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
    • C01B3/323Catalytic reaction of gaseous or liquid organic compounds other than hydrocarbons with gasifying agents
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/02Processes for making hydrogen or synthesis gas
    • C01B2203/0266Processes for making hydrogen or synthesis gas containing a decomposition step
    • C01B2203/0277Processes for making hydrogen or synthesis gas containing a decomposition step containing a catalytic decomposition step
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/02Processes for making hydrogen or synthesis gas
    • C01B2203/0283Processes for making hydrogen or synthesis gas containing a CO-shift step, i.e. a water gas shift step
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/042Purification by adsorption on solids
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/0465Composition of the impurity
    • C01B2203/0475Composition of the impurity the impurity being carbon dioxide
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/12Feeding the process for making hydrogen or synthesis gas
    • C01B2203/1205Composition of the feed
    • C01B2203/1211Organic compounds or organic mixtures used in the process for making hydrogen or synthesis gas
    • C01B2203/1217Alcohols
    • C01B2203/1223Methanol
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/12Feeding the process for making hydrogen or synthesis gas
    • C01B2203/1258Pre-treatment of the feed
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P30/00Technologies relating to oil refining and petrochemical industry

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  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Health & Medical Sciences (AREA)
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  • Combustion & Propulsion (AREA)
  • Inorganic Chemistry (AREA)
  • Hydrogen, Water And Hydrids (AREA)

Abstract

The present invention provides a kind of useless refining methanol reforming hydrogen manufacturing method, includes the following steps:Step 1, grease-contained useless methanol is inputted into oil eliminator, after detaching the grease and impurity in giving up methanol, is stood into methanol tank;Step 2, stripper is inputted after the methanol pressurization after standing, after stripper purifies, methanol steam and water vapour is obtained in tower top;Step 3, methanol steam and water vapour enter vaporization superheater, obtain temperature be 240 260 DEG C, mass ratio 1:1 methanol steam and the mixture of vapor;Step 4, mixture enters reactor, and conversion gas is obtained by the reaction;Step 5, conversion gas obtains product hydrogen after heat recovery, cooling, washing, pressure-variable adsorption processing.The present invention also provides a kind of useless refining methanol reforming hydrogen manufacturing devices.Useless Methanol Recovery process for refining and methanol reforming hydrogen manufacturing are combined by the present invention, efficiently use useless methanol, are improved the utilization rate for the methanol that gives up, are reduced the discharge of waste, increase economic efficiency.

Description

A kind of useless refining methanol reforming hydrogen manufacturing method and device
Technical field
The present invention relates to chemical waste liquid recycling field more particularly to a kind of useless refining methanol reforming hydrogen manufacturing method and Device.
Background technology
On the one hand, in recent years, due to fine chemistry industry, anthraquinone producing hydrogen peroxide, powder metallurgy, oil hydrogenation, forestry product and Agriculture product add hydrogen, bioengineering, petroleum refining to add the rapid development of hydrogen and hydrogen fuel cleaning vehicle etc., rapidly to pure hydrogen demand Increase.Therefore, methanol decomposition hydrogen manufacturing technique and schizolysis hydrogen production plant with methanol are industrially widely used.
Methanol reforming hydrogen manufacturing at 220~280 DEG C, is catalyzed on special-purpose catalyst using methanol and desalted water as raw material Conversion obtains composition as main hydrogeneous and carbon dioxide conversion gas, and principle is as follows:
Main reaction:CH3OH=CO+2H2+90.7KJ/mol
CO+H2O=CO2+H2-41.2KJ/mol
Overall reaction:CH3OH+H2O=CO2+3H2+49.5KJ/mol
Since catalyst is using Cu-series catalyst, the more demanding of material benzenemethanol is led in conventional methanol reforming hydrogen manufacturing It is refined methanol often to require material benzenemethanol, needs to meet GB338-2011 Grade A requirements above.The price of material benzenemethanol increases The cost of methanol reforming hydrogen manufacturing device.
On the other hand, a large amount of methanol of the needs such as some pharmaceutical factories, chemical plant, methanol are used as some intermediate fluxes After will produce largely useless methanol, these useless main oil-containings of methanol or some impurity.These useless methanol prices are cheap, and a large amount of useless The unreasonable discharge of methanol also brings financial burden and environmental protection pressure to enterprise.
Invention content
The technical problem to be solved by the present invention is to:In view of the drawbacks of the prior art, a kind of useless refining methanol conversion is provided Useless Methanol Recovery process for refining and methanol reforming hydrogen manufacturing are combined by hydrogen production process and device, efficiently use useless methanol, are improved useless The utilization rate of methanol reduces the discharge of waste, increases economic efficiency.
The present invention uses following technical scheme to solve above-mentioned technical problem:
On the one hand, the present invention provides a kind of useless refining methanol reforming hydrogen manufacturing method, includes the following steps:
Step 1, grease-contained useless methanol is inputted into oil eliminator, after detaching the grease and impurity in giving up methanol, into first Alcohol storage tank is stood;
Step 2, stripper is inputted after the methanol pressurization after step 1 being stood, after stripper purifies, first is obtained in tower top Alcohol steam and water vapour;
Step 3, the methanol steam and water vapour that step 2 obtains enter vaporization superheater, in the discharge port of vaporization superheater Obtain temperature be 240-260 DEG C, mass ratio 1:1 methanol steam and the mixture of vapor;
Step 4, the mixture that step 3 obtains enters reactor, and conversion gas is obtained by the reaction under the effect of the catalyst;
Step 5, the conversion gas that step 4 obtains obtains product hydrogen after heat recovery, cooling, washing, pressure-variable adsorption processing Gas.
In order to optimize above-mentioned method, the technical measures that the present invention takes further include:
Further, in step 1, by weight percentage, 3%-4% containing grease, water 10%- in the useless methanol 12%, surplus is methanol.
Further, in step 2, adjusting control stripper overhead obtains the mass ratio of methanol steam and vapor, make into The mass percent for entering to vaporize methanol steam in the methanol steam of superheater, steam mixture is 45%-50%;Further Ground, the mass percent for making to enter methanol steam in the methanol steam of vaporization superheater, steam mixture is 50%.
Further, in step 3, the heat source for vaporizing superheater is supplied by out-of-bounds conduction oil.
Further, in step 4, the pressure of the conversion gas is 1.0MPa, temperature is 250-270 DEG C, and group is divided into H2、 CO2、CO、CH4、H2O and CH3OH;Further, temperature is preferably 260 DEG C.
Further, in step 4, the catalyst is Cu-series catalyst.
Further, in step 5, by mass percentage, the conversion gas group after washing process is divided into:H2:70%- 78%, CO2:20%-28%, CO:0.4%-1.2%, surplus are a small amount of CH4And saturated water;Further, by quality percentage Than meter, the conversion gas group after washing process is divided into:H2:74%, CO2:24%, CO:0.8%, surplus is a small amount of CH4And saturation Water.
Further, it in step 5, is washed after the conversion air cooling to less than 40 DEG C.
Further, in step 5, cooling carries out within the condenser, cooled medium of the conversion gas as condenser, stripping Cooling medium of the charging methanol of tower as condenser.It converts gas and carries out heat exchange with stripper charging methanol, realize heat It recycles.
On the other hand, the present invention also provides a kind of devices of useless refining methanol reforming hydrogen manufacturing, include the oil of sequence setting Pass through from device, methanol tank, stripper, vaporization superheater, reactor, water scrubber and pressure swing adsorption system, the methanol tank Methanol pump is connect with the stripper, and the tower top discharge port of the stripper is connect with the feed inlet of the vaporization superheater, institute The lower part for stating stripper is connected with vapor pipe, and vapor enters the stripper by the vapor pipe.
In order to optimize above-mentioned device, the technical measures that the present invention takes further include:
Further, condenser is also associated between the reactor and the water scrubber, the condenser is for cooling down Conversion gas obtained by the reaction.
Further, the pressure swing adsorption system includes at least two adsorption towers being connected in parallel.
Further, concentration detection apparatus is equipped at the reactor inlet, to control the methanol steam into reactor Mass ratio with vapor is 1:1.
Further, flow control valve, the Concentration Testing dress are equipped on the vapor pipe of the lower part of stripper connection It sets and is electrically connected with the flow control valve, the flow of the vapor of stripper is passed through with control.
Or can also be to be connected with vapor supplement pipe, the vapor supplement pipe in the exit of the stripper It is equipped with flow control valve, the concentration detection apparatus is electrically connected with the flow control valve, to adjust stripper exit first The mass ratio of alcohol steam and vapor.
Further, the concentration detection apparatus is methanol concentration detector.
Or can also be that the concentration detection apparatus is water vapor concentration detection device.
Further, it is connected with methanol recovery device on the water scrubber, for recycling the methanol in unreacted conversion gas.
Further, the stripper feed inlet is equipped with feed preheater, and the charging methanol for preheating stripper carries out Subsequent stripping processing.
The present invention is had the following technical effect that compared with prior art using above-mentioned technical proposal:
1) useless Methanol Recovery process for refining and methanol reforming hydrogen manufacturing are combined by the present invention, efficiently use useless methanol, are improved The utilization rate of useless methanol, reduces the discharge of waste, improves economic benefit.
2) present invention by useless methanol by modes such as oil removing, standing, pressurization, strippings, by useless methanol grease and The impurity of other influences methanol translation hydrogen making catalyst is removed, and stripping temperature is remained;And adjusting control methanol and water quality Than 1:Methanol rectification need not can be met methanol reforming hydrogen manufacturing requirement at technical grade refined methanol, is greatly saved by 1 ratio Energy consumption and cost.
Description of the drawings
Fig. 1 is the process flow chart of a preferred embodiment of the present invention;
Reference numeral therein is:1- oil eliminators;2- methanol tanks;3- methanol pumps;4- strippers;5- vaporization overheats Device;6- reactors;7- condensers;8- water scrubbers;9- pressure swing adsorption systems.
Specific implementation mode
Technical scheme of the present invention is described in further detail with embodiment below in conjunction with the accompanying drawings.Following embodiment is only For clearly illustrating technical scheme of the present invention, and not intended to limit the protection scope of the present invention.
Embodiment 1
The methanol that gives up the present embodiment provides a kind of useless refining methanol reforming hydrogen manufacturing method, in the present embodiment is molten from chemical plant Agent tank field, wherein grease-contained weight percent is 3%-4%, the weight percent of water is 10%-12%, and a small amount of impurity is remaining Amount is methanol;As shown in Figure 1, including the following steps:
Step 1, grease-contained useless methanol is inputted into oil eliminator 1, the grease in useless methanol is detached, removed by oil eliminator 1 Useless methanol after oil enters methanol tank 2 by the road, stands the impurity removed in giving up methanol;
Step 2, oil removing, the methanol stood are pressurized to by 1.0MPa by methanol pump 3, into stripper 4, stripped simultaneously It is passed through water vapour in tower 4, methanol steam and vapor (predominantly methanol steam and vapor) are obtained in the outlet of stripper 4;
Step 3, the mass ratio of adjusting control methanol steam and vapor makes the methanol steam, the water that enter vaporization superheater 5 The mass percent of methanol steam is 50% in steam mixture;It vaporizes 5 heat source of superheater to be supplied by out-of-bounds conduction oil, methanol steams Vapour and vapor after the vaporization of vaporization superheater 5, overheat, obtain temperature be 250 DEG C, pressure 1.0MPa, mass ratio 1:1 The mixture of methanol steam and vapor;
Step 4, the mixture that vaporization superheater 5 obtains enters reactor 6, in the work of methanol reforming hydrogen manufacturing special-purpose catalyst Under (being preferably Cu-series catalyst in the present embodiment), the reaction of first alcohol and water generates conversion gas, and conversion gas group becomes H2、CO2、CO、 CH4、H2O and CH3OH, pressure 1.0MPa, temperature are about 260 DEG C;
Step 5, for conversion gas by recycling heat, condenser 7 enters water scrubber 8, remaining first after being cooled to less than 40 DEG C The washed recycling of alcohol and water, it is about H that conversion gas, which goes out 8 component of water scrubber,2:74%, CO2:24%, CO:0.8%, remaining a small amount of CH4 And saturated water;The conversion gas for going out water scrubber 8 enters pressure swing adsorption system 9, pressure swing adsorption system 9 by least 2 adsorption tower groups at, To be connected in parallel with each other between adsorption tower, after conversion gas is by pressure swing adsorption system 9, by adjusting 9 parameter of pressure swing adsorption system, Qualified product hydrogen is obtained in the tower top of adsorption tower.
Embodiment 2
The methanol that gives up the present embodiment provides a kind of useless refining methanol reforming hydrogen manufacturing method, in the present embodiment is molten from chemical plant Agent tank field, wherein grease-contained weight percent is 3%-4%, the weight percent of water is 10%-12%, and a small amount of impurity is remaining Amount is methanol;As shown in Figure 1, including the following steps:
Step 1, grease-contained useless methanol is inputted into oil eliminator 1, the grease in useless methanol is detached, removed by oil eliminator 1 Useless methanol after oil enters methanol tank 2 by the road, stands the impurity removed in giving up methanol;
Step 2, oil removing, the methanol stood are pressurized to by 1.0MPa by methanol pump 3, into stripper 4, stripped simultaneously It is passed through water vapour in tower 4, methanol steam and vapor (predominantly methanol steam and vapor) are obtained in the outlet of stripper 4;
Step 3, the mass ratio of adjusting control methanol steam and vapor makes the methanol steam, the water that enter vaporization superheater 5 The mass percent of methanol steam is 45% in steam mixture;It vaporizes 5 heat source of superheater to be supplied by out-of-bounds conduction oil, methanol steams Vapour and vapor after the vaporization of vaporization superheater 5, overheat, obtain temperature be 240 DEG C, pressure 1.0MPa, mass ratio 1:1 The mixture of methanol steam and vapor;
Step 4, the mixture that vaporization superheater 5 obtains enters reactor 6, in the work of methanol reforming hydrogen manufacturing special-purpose catalyst Under (being preferably Cu-series catalyst in the present embodiment), the reaction of first alcohol and water generates conversion gas, and conversion gas group becomes H2、CO2、CO、 CH4、H2O and CH3OH, pressure 1.0MPa, temperature are about 250 DEG C;
Step 5, for conversion gas by recycling heat, condenser 7 enters water scrubber 8, remaining first after being cooled to less than 40 DEG C The washed recycling of alcohol and water, it is about H that conversion gas, which goes out 8 component of water scrubber,2:70%, CO2:20%, CO:0.4%, remaining a small amount of CH4 And saturated water;The conversion gas for going out water scrubber 8 enters pressure swing adsorption system 9, pressure swing adsorption system 9 by least 2 adsorption tower groups at, To be connected in parallel with each other between adsorption tower, after conversion gas is by pressure swing adsorption system 9, by adjusting 9 parameter of pressure swing adsorption system, Qualified product hydrogen is obtained in the tower top of adsorption tower.
Embodiment 3
The methanol that gives up the present embodiment provides a kind of useless refining methanol reforming hydrogen manufacturing method, in the present embodiment is molten from chemical plant Agent tank field, wherein grease-contained weight percent is 3%-4%, the weight percent of water is 10%-12%, and a small amount of impurity is remaining Amount is methanol;As shown in Figure 1, including the following steps:
Step 1, grease-contained useless methanol is inputted into oil eliminator 1, the grease in useless methanol is detached, removed by oil eliminator 1 Useless methanol after oil enters methanol tank 2 by the road, stands the impurity removed in giving up methanol;
Step 2, oil removing, the methanol stood are pressurized to by 1.0MPa by methanol pump 3, into stripper 4, stripped simultaneously It is passed through water vapour in tower 4, methanol steam and vapor (predominantly methanol steam and vapor) are obtained in the outlet of stripper 4;
Step 3, the mass ratio of adjusting control methanol steam and vapor makes the methanol steam, the water that enter vaporization superheater 5 The mass percent of methanol steam is 50% in steam mixture;It vaporizes 5 heat source of superheater to be supplied by out-of-bounds conduction oil, methanol steams Vapour and vapor after the vaporization of vaporization superheater 5, overheat, obtain temperature be 260 DEG C, pressure 1.0MPa, mass ratio 1:1 The mixture of methanol steam and vapor;
Step 4, the mixture that vaporization superheater 5 obtains enters reactor 6, in the work of methanol reforming hydrogen manufacturing special-purpose catalyst Under (being preferably Cu-series catalyst in the present embodiment), the reaction of first alcohol and water generates conversion gas, and conversion gas group becomes H2、CO2、CO、 CH4、H2O and CH3OH, pressure 1.0MPa, temperature are about 270 DEG C;
Step 5, for conversion gas by recycling heat, condenser 7 enters water scrubber 8, remaining first after being cooled to less than 40 DEG C The washed recycling of alcohol and water, it is about H that conversion gas, which goes out 8 component of water scrubber,2:78%, CO2:28%, CO:1.2%, remaining a small amount of CH4 And saturated water;The conversion gas for going out water scrubber 8 enters pressure swing adsorption system 9, pressure swing adsorption system 9 by least 2 adsorption tower groups at, To be connected in parallel with each other between adsorption tower, after conversion gas is by pressure swing adsorption system 9, by adjusting 9 parameter of pressure swing adsorption system, Qualified product hydrogen is obtained in the tower top of adsorption tower.
Embodiment 4
The present embodiment provides a kind of useless refining methanol reforming hydrogen manufacturing devices of the method for embodiment 1-3, such as Fig. 1 institutes Show, including the oil eliminator of sequence setting, methanol tank, stripper, vaporization superheater, reactor, condenser, water scrubber and change Press adsorption system, methanol tank connect by methanol pump with stripper, the tower top discharge port of stripper and vaporize superheater into Material mouth connects, and the lower part of stripper is connected with vapor pipe, and vapor enters stripper by vapor pipe, is used for isolated first Alcohol steam and vapor.
In the above-described embodiments, pressure swing adsorption system 9 by least 2 adsorption tower groups at being parallel with one another between adsorption tower Connection, to improve the efficiency of pressure-variable adsorption.
In the above-described embodiments, it is equipped with concentration detection apparatus in 6 inlet of reactor, concentration detection apparatus detects in real time The mass ratio for vaporizing the methanol steam and vapor of superheater 5, the methanol steam and vapor of reactor 6 are entered with adjusting control Mass ratio be 1:1.The mass ratio for the methanol steam and vapor that control herein enters reactor 6 is 1:1 principle is methanol In the overall reaction equation of reforming hydrogen manufacturing, the molar ratio of methanol and water is 1:1, i.e. the mass ratio of methanol and water is 16:9, it adjusts Control the mass ratio 1 of methanol steam and vapor:1, the methanol in reactor 6 can be made fully to react, be conducive to improve methanol Utilization rate;Simultaneously it is not necessary to which methanol is become refined methanol, the cost of methanol reforming hydrogen manufacturing device is reduced.Wherein, control is adjusted The mass ratio 1 of methanol steam and vapor processed:1 mode be can be stripper 4 lower part connect vapor Guan Shangshe Flow control valve is set, concentration detection apparatus is electrically connected with flow control valve, and the methanol steam and vapor obtained according to detection Quality than feedback regulation flow control valve, the amount that the vapor of stripper 4 is passed through by adjusting control is to obtain mass ratio 1:1 methanol steam and vapor;Or can also be in addition to connect vapor supplement pipe in the exit of stripper 4, water steams Flow control valve, the electrical connection of concentration detection apparatus flow control valve are set on gas supplement pipe, and steamed according to the methanol that detection obtains The quality of vapour and vapor passes through the intake of 4 exit vapor of adjusting control stripper than feedback regulation flow control valve To obtain mass ratio as 1:1 methanol steam and vapor.
In the above-described embodiments, concentration detection apparatus can be methanol concentration detector, mixing of the detection into reactor 6 Methanol concentration in steam, methanol concentration detector are electrically connected with flow control valve, when methanol concentration is relatively low, adjust flow-rate adjustment Valve reduces the intake of vapor, to obtain mass ratio as 1:1 methanol steam and vapor.
In the above-described embodiments, concentration detection apparatus can be water vapor concentration detection device, and detection enters reactor 6 Water vapor concentration in mixed vapour, water vapor concentration detection device are preferably moisture probe, moisture probe and flow control valve electricity Connection adjusts the intake that flow control valve increases vapor when water vapor concentration is relatively low, to obtain mass ratio as 1:1 Methanol steam and vapor.
In the above-described embodiments, it is connected with methanol recovery device on water scrubber 8, for recycling the first in unreacted conversion gas Alcohol.
In the above-described embodiments, 4 feed inlet of the stripper is equipped with feed preheater.Feed preheater is used for entering vapour The methanol steam of stripper 4 is preheated, to improve steam stripped efficiency and speed.
In the above-described embodiments, the embodiment of conversion gas heat recovery is cooled Jie for converting gas as condenser 7 Matter, the cooling medium of the charging methanol of stripper 4 as condenser 7 so that conversion gas feeds methanol with stripper 4 and carries out heat It exchanges, realizes heat recovery and utilization.
By above-described embodiment it is found that the present invention a kind of useless refining methanol reforming hydrogen manufacturing method and device, using waste and old first Alcohol reaches methanol reforming hydrogen manufacturing material condition, then uses methanol reforming hydrogen manufacturing technique productions hydrogen through refining.The present invention will give up Methanol Recovery is refined to be combined with the production of methanol reforming hydrogen manufacturing and process characteristic, reduces the original energy of useless refining methanol Consumption, need not become refined methanol by methanol, only need to meet first alcohol and water 1 in methanol reforming hydrogen manufacturing:1 mass ratio, at the same it is also big The big cost for reducing methanol reforming hydrogen manufacturing device, has prodigious economy and the feature of environmental protection.
Specific embodiments of the present invention are described in detail above, but it is only used as example, the present invention is not intended to limit In particular embodiments described above.To those skilled in the art, it is any to the practicality carry out equivalent modifications and replace In generation, is also all among scope of the invention.Therefore, without departing from the spirit and scope of the invention made by impartial conversion and repair Change, all should be contained within the scope of the invention.

Claims (10)

1. a kind of useless refining methanol reforming hydrogen manufacturing method, which is characterized in that include the following steps:
Step 1, grease-contained useless methanol is inputted into oil eliminator, after detaching the grease and impurity in giving up methanol, is stored up into methanol Tank is stood;
Step 2, stripper is inputted after the methanol pressurization after step 1 being stood, after stripper purifies, methanol is obtained in tower top and steams Vapour and water vapour;
Step 3, the methanol steam and water vapour that step 2 obtains enter vaporization superheater, are obtained in the discharge port of vaporization superheater Temperature is 240-260 DEG C, mass ratio 1:1 methanol steam and the mixture of vapor;
Step 4, the mixture that step 3 obtains enters reactor, and conversion gas is obtained by the reaction under the effect of the catalyst;
Step 5, the conversion gas that step 4 obtains obtains product hydrogen after heat recovery, cooling, washing, pressure-variable adsorption processing.
2. useless refining methanol reforming hydrogen manufacturing method according to claim 1, which is characterized in that in step 1, percentage by weight Than meter, 3%-4% containing grease, water 10%-12%, surplus are methanol in the useless methanol.
3. useless refining methanol reforming hydrogen manufacturing method according to claim 1, which is characterized in that in step 2, adjusting control vapour Stripper overhead obtains the mass ratio of methanol steam and vapor, makes the methanol steam, the steam mixture that enter vaporization superheater The mass percent of middle methanol steam is 45%-50%.
4. useless refining methanol reforming hydrogen manufacturing method according to claim 1, which is characterized in that in step 4, the conversion gas Pressure be 1.0MPa, temperature is 250-270 DEG C, group is divided into H2、CO2、CO、CH4、H2O and CH3OH。
5. useless refining methanol reforming hydrogen manufacturing method according to claim 1, which is characterized in that in step 4, the catalyst For Cu-series catalyst.
6. useless refining methanol reforming hydrogen manufacturing method according to claim 1, which is characterized in that in step 5, by quality percentage Than meter, the conversion gas group after washing process is divided into:H2:70%-78%, CO2:20%-28%, CO:0.4%-1.2%, surplus For a small amount of CH4And saturated water.
7. useless refining methanol reforming hydrogen manufacturing method according to claim 1, which is characterized in that in step 5, the conversion gas It is washed after being cooled to less than 40 DEG C.
8. a kind of useless refining methanol reforming hydrogen manufacturing device for any one of claim 1-7 the methods, which is characterized in that packet Include oil eliminator (1), methanol tank (2), stripper (4), vaporization superheater (5), reactor (6), the water scrubber of sequence setting (8) it is connect with the stripper (4) by methanol pump (3) with pressure swing adsorption system (9), the methanol tank (2), the stripping The tower top discharge port of tower (4) is connect with the feed inlet of the vaporization superheater (5), and the lower part of the stripper (4) is connected with water Steam pipe, vapor enter the stripper (4) by the vapor pipe.
9. the device of useless refining methanol reforming hydrogen manufacturing according to claim 8, which is characterized in that the reactor (6) and Condenser (7) is also associated between the water scrubber (8), the condenser (7) is for cooling down conversion gas obtained by the reaction.
10. the device of useless refining methanol reforming hydrogen manufacturing according to claim 8, which is characterized in that the pressure-variable adsorption system System (9) includes at least two adsorption towers being connected in parallel.
CN201810542918.7A 2018-05-30 2018-05-30 A kind of useless refining methanol reforming hydrogen manufacturing method and device Pending CN108516520A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN113860996A (en) * 2021-04-23 2021-12-31 东营市海科瑞林化工有限公司 Raw material methanol oil removal treatment process in methanol hydrogen production process

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CN208440278U (en) * 2018-05-30 2019-01-29 上海亿维工业科技股份有限公司 A kind of useless refining methanol reforming hydrogen manufacturing device

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CN102627259A (en) * 2012-03-27 2012-08-08 成都赛普瑞兴科技有限公司 Method for preparing hydrogen by methanol-water reforming
CN104086381A (en) * 2014-07-22 2014-10-08 湖北潜江金华润化肥有限公司 Method and device for preparing dimethyl ether from oil-containing waste methanol
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CN110342712A (en) * 2019-06-28 2019-10-18 金澳科技(湖北)化工有限公司 A kind of processing system and method applied to MTBE extraction water
CN113860996A (en) * 2021-04-23 2021-12-31 东营市海科瑞林化工有限公司 Raw material methanol oil removal treatment process in methanol hydrogen production process

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