CN209024471U - A kind of multi-joint-production apparatus being pyrolyzed coal gas hydrogen rich gas, LNG, mixed hydrocarbon - Google Patents
A kind of multi-joint-production apparatus being pyrolyzed coal gas hydrogen rich gas, LNG, mixed hydrocarbon Download PDFInfo
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- CN209024471U CN209024471U CN201920120335.5U CN201920120335U CN209024471U CN 209024471 U CN209024471 U CN 209024471U CN 201920120335 U CN201920120335 U CN 201920120335U CN 209024471 U CN209024471 U CN 209024471U
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Abstract
The utility model relates to field of energy and chemical technologys, more particularly to a kind of pyrolysis coal gas hydrogen rich gas, LNG, the multi-joint-production apparatus for mixing hydrocarbon, it is characterized in that, it include: the adsorbent equipment successively laid, oil scrubber, deammoniation tower, pretreater, desulfurizing tower, demercuration tower, depickling component, dry component, purification componentry, and liquefaction separation component.Multi-joint-production apparatus provided by the utility model, purification separation is carried out to pyrolysis coal gas by a series of technological means, to produce hydrogen rich gas, LNG and mixed hydrocarbon product, so that the pyrolysis coal gas generated to pyrolysis of coal is able to carry out and makes full use of, improve the economic benefit of pyrolysis of coal, the clean and effective for realizing coal utilizes, and achievees the purpose that energy-saving and emission-reduction, product maximizing the benefits.
Description
Technical field
The utility model relates to field of energy and chemical technologys, and in particular to a kind of pyrolysis coal gas hydrogen rich gas, LNG, mixed hydrocarbon
Multi-joint-production apparatus.
Background technique
Pyrolysis of coal, also referred to as coal carbonization or thermal decomposition refer to that coal is heated in the absence of air conditions, inside coal
Burnt oil and gas be evaporated, thus obtain tar, coal gas, semi-coke process.
Wherein, all based on small business, the tar and semi-coke of enterprise's production can be used as primary product for the pyrolysis of coal in China
It is sold, and coal gas can be then vented or directly burning, such consequence is that production method is extensive, and efficient energy conversion is low,
It is unfavorable for energy-saving and emission-reduction.
Utility model content
Therefore, the pyrolyzing coal that the technical problem to be solved by the present invention is to overcome pyrolysis of coal in the prior art to generate
Gas is vented or directly burning, and production method is extensive, and efficient energy conversion is low, is unfavorable for the defect of energy-saving and emission-reduction, to provide
A kind of multi-joint-production apparatus being pyrolyzed coal gas hydrogen rich gas, LNG, mixed hydrocarbon.
To solve above-mentioned technical proposal, the technical solution adopted in the utility model are as follows:
A kind of multi-joint-production apparatus being pyrolyzed coal gas hydrogen rich gas, LNG, mixed hydrocarbon characterized by comprising
It is the adsorbent equipment successively laid, oil scrubber, deamination component, pretreater, desulfurizing tower, demercuration tower, depickling component, dry
Dry component, purification componentry, with to pyrolysis coal gas in oil, crude benzol, ammonia, benzene and naphthalene, organic sulfur, mercury, hydrogen sulfide, carbon dioxide,
Moisture, carbon dioxide and heavy hydrocarbon are successively removed；
And liquefaction separation component, entrance are connected with the outlet of the purification componentry, for carrying out liquid to pyrolysis coal gas
Change separation to coproduction hydrogen rich gas, LNG and mixed hydrocarbon.
Further, the first inversely spraying device is provided in the oil scrubber, the first inversely spraying device is used for heat
Coal gas spray washing oil is solved so that the pyrolysis coal gas and the washing oil counter current contacting；And/or
The deamination component includes Ammonic washing tower, and the second inversely spraying device is arranged inside, and the second inversely spraying device is used
In drenching desalted water and poor ammoniacal liquor to pyrolyzing coal gas blowout, it is pyrolyzed coal gas and liquid phase and washes gas phase after ammonia after Ammonic washing tower is separated into and washes ammonia,
Ammonia in pyrolysis coal gas is present in wash ammonia after in liquid phase.
Further, the deamination component further include:
Stripper is connected with the Ammonic washing tower, and liquid phase carries out stripping except ammonia after washing ammonia for what is obtained to Ammonic washing tower；
Reflux pump is connected with the stripper, for the poor ammonia solution after stripping except ammonia to be transmitted back to the second reverse spray
Drench device.
Further, the desulfurizing tower is hydrolysis tower, and the organic sulfur being pyrolyzed in coal gas is hydrolyzed in the desulfurizing tower
Reaction is to be removed.
Further, the depickling component includes:
Desulfuration absorbing tower is connected with the demercuration tower, the inversely spraying device of third is arranged inside, the third is inversely spraying
Device is used to drench IPE-MDEA selective desulfurization solution to pyrolyzing coal gas blowout to obtain removing one after most of H2S and part CO2
Grade sweet gas and sulfur-bearing rich solution；
First cooler, for being cooled down to the first grade desulfurizing gas；
First gas-liquid separation filter, for being separated the level-one to be purified to the first grade desulfurizing gas by cooling
Sweet gas and IPE-MDEA selective desulfurization solution；
Decarburization absorption tower is connected with the desulfuration absorbing tower, and the 4th inversely spraying device is arranged inside, and the described 4th is reverse
Spray thrower is used for pyrolyzing coal gas blowout leaching IPE-MDEA activity decarbonizing solution to obtain decarbonization gas and carbon containing rich solution；
Second cooler, for being cooled down to the decarbonization gas；And
Second gas-liquid separation filter, for being separated the pyrolysis coal gas to be purified to the decarbonization gas by cooling
And IPE-MDEA activity decarbonizing solution.
Further, the depickling component further include:
Low pressure rich solution flash tank is connected to the desulfuration absorbing tower and first gas-liquid separation filter, is used for
The IPE-MDEA of the sulfur-bearing rich solution and the discharge of the first gas-liquid separation filter of collecting the desulfuration absorbing tower discharge is selectively de-
Sulphur solution, and two kinds of solution are flashed；
Desulfurization regeneration tower, bottom are provided with the first poor rich liquid heat exchanger, the sulfur-bearing of the low pressure rich solution flash tank discharge
Rich solution is regenerated via after the heat exchange of the lean solution of the first poor rich liquid heat exchanger and desulfurization regeneration tower bottom into desulfurization regeneration tower；
High pressure rich solution flash tank is connected to the decarburization absorption tower and second gas-liquid separation filter, is used for
Collect the carbon containing rich solution of the decarburization absorption tower discharge and the IPE-MDEA activity decarburization of the second gas-liquid separation filter discharge
Solution, and two kinds of solution are flashed；
Decarburization regenerator, bottom are provided with the second poor rich liquid heat exchanger, and the high pressure rich solution flash tank is discharged carbon containing
Rich solution is regenerated via after the heat exchange of the lean solution at the second poor rich liquid heat exchanger and decarburization regenerator bottom into decarburization regenerator.
Further, the liquefaction separation component includes:
The outlet of ice chest, entrance and the purification componentry is connected, for pyrolysis coal gas after purification to be carried out low temperature point
From obtaining the liquid phase based on C5+ component；
Mixed hydrocarbon tower, is connected with the ice chest, for carrying out rectifying to the gas phase obtained after cryogenic separation, is obtained mixed hydrocarbon and is produced
Product；
Dehydrogenation tower, is connected with mixed hydrocarbon tower, and the hydrogen in gaseous component for exporting mixed hydrocarbon tower is extracted, obtained
Hydrogen rich gas；
And methane tower, it is connected with dehydrogenation tower, the methane in gaseous component for exporting to dehydrogenation tower mentions
It is pure, obtain LNG.
Further, the multi-joint-production apparatus further includes helical-lobe compressor, the outlet of the helical-lobe compressor and the suction
The entrance of adsorption device is connected, and the helical-lobe compressor is compressed for that will be pyrolyzed coal gas.
Further, relay compressor is additionally provided between the pretreater and the desulfurizing tower.
Further, it is provided with coke adsorbent in the adsorbent equipment, to adsorb lubricating oil and coke in pyrolysis coal gas
Oil；
Coke adsorbent is provided in the pretreater to remove benzene and naphthalene in pyrolysis coal gas；
Sulfur loading active carbon adsorbent is provided in the demercuration tower to adsorb the mercury in pyrolysis coal gas；
Be provided in the dry component adsorbent of molecular sieve with to the moisture in pyrolysis coal gas into adsorbing and removing；
Purifying adsorbent is provided in the purification componentry to adsorb to the carbon dioxide and heavy hydrocarbon that are pyrolyzed in coal gas
Removing.
Technical solutions of the utility model have the advantages that
1. the multi-joint-production apparatus of pyrolysis coal gas hydrogen rich gas provided by the utility model, LNG, mixed hydrocarbon, passes through a series of skills
Art means carry out purification separation to pyrolysis coal gas, so that hydrogen rich gas, LNG and mixed hydrocarbon product are produced, so that pyrolysis of coal is generated
Pyrolysis coal gas, which is able to carry out, to be made full use of, and the economic benefit of pyrolysis of coal is improved, and the clean and effective for realizing coal utilizes, and reaches section
The purpose of energy emission reduction, product maximizing the benefits.
2. provided by the utility model wash ammonia component, by setting stripper and reflux pump, so that desalted water and poor ammonia
Solution can be transported to stripper, and stripping after absorbing with pyrolysis coal gas contact mass transfer with the ammonia that will be pyrolyzed in coal gas
Stripping is carried out in tower except ammonia, is transported to the second inversely spraying device using reflux pump later, so that desalted water and poor ammonia solution
It can be realized and recycle, saved raw material, reduce except ammonia cost.
3. desulfurizing tower provided by the utility model, by setting hydrolysis tower for desulfurizing tower, so that organic sulfur passes through hydrolysis
Reaction is removed, and reaction condition requirement is lower, and cost is relatively low.
4. depickling component provided by the utility model, by setting low pressure rich solution flash tank and desulfurization regeneration tower, so that
The sulfur-bearing rich solution being discharged after desulfurization operations can be realized regeneration, regenerate him by setting high pressure rich solution flash tank and decarburization,
So that the carbon containing rich solution being discharged after Decarburization Operation can be realized regeneration, the raw material of depickling operation are saved, depickling is reduced
The cost of operation.
5. multi-joint-production apparatus provided by the utility model, by being arranged helical-lobe compressor in the inlet of adsorbent equipment, one
Aspect can pressurize to pyrolysis coal gas by helical-lobe compressor, enable pyrolysis coal gas preferably in multi-joint-production apparatus
Interior circulation, on the other hand, due to, containing high carbonizable substances such as a large amount of tar, being easily adhered during pressurization in pyrolysis coal gas
It is worked normally at the impeller of compressor or piston valve position to influence compressor, and selects helical-lobe compressor then can be to avoid
This problem, to reduce the operation maintenance cost of multi-joint-production apparatus.
6. adsorbent equipment provided by the utility model passes through setting coke adsorbent adsorpting lubrication oil and tar, such suction
Attached dose is made by Material synthesis of coal-based carbon, while adsorpting lubrication oil and tar, can also absorb part benzene and naphthalene, and
Service life can be fed directly to coal-burning boiler after expiring and carry out burning utilization, have the characteristics that raw material availability is higher.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the flow diagram of the multi-joint-production apparatus in the embodiments of the present invention 1；
Description of symbols:
1, adsorbent equipment；2, oil scrubber；3, Ammonic washing tower；4, pretreater；5, desulfurizing tower；6, demercuration tower；7, desulfurization absorbs
Tower；8, the first cooler；9, the first gas-liquid separation filter；10, decarburization absorption tower；11, the second cooler；12, the second gas-liquid
Separator-filter；13, main drying tower；14, drying tower is assisted；15, primary heater；16, the first cooler；17, the first separation
Device；18, main purification column；19, aided purification tower；20, secondary heater；21, the second cooler；22, the second separator；23, cold
Case；24, hydrocarbon tower is mixed；25, dehydrogenation tower；26, methane tower；27, helical-lobe compressor；28, relay compressor；29, stripper；30, it returns
Stream pump；31, condenser；32, gas-liquid separator；33, low pressure rich solution flash tank；34, desulfurization regeneration tower；35, the first rich or poor liquid changes
Hot device；36, high pressure rich solution flash tank；37, decarburization regenerator；38, the second poor rich liquid heat exchanger.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other
Not constituting conflict can be combined with each other.
Embodiment 1
The present embodiment is related to a kind of multi-joint-production apparatus for being pyrolyzed coal gas hydrogen rich gas, LNG, mixed hydrocarbon, including what is successively laid
Adsorbent equipment 1, oil scrubber 2, deamination component, pretreater 4, desulfurizing tower 5, demercuration tower 6, depickling component, dry component, purifying group
Part and liquefaction separation component, by successively to pyrolysis coal gas in oil, crude benzol, ammonia, benzene and naphthalene, organic sulfur, mercury, hydrogen sulfide,
Carbon dioxide, moisture, carbon dioxide and heavy hydrocarbon are removed, and carry out liquefaction separation to purified pyrolysis coal gas to obtain
Hydrogen rich gas, LNG and mixed hydrocarbon product.
Wherein, it is provided with coke adsorbent in adsorbent equipment 1, pyrolysis coal gas is passed through to being adsorbed in adsorbent equipment 1 with coke
Agent contact is to remove lubricating oil and tar in pyrolysis coal gas, since coke adsorbent is using coal-based carbon as Material synthesis system
, therefore while adsorpting lubrication oil and tar, part benzene and naphthalene can be also absorbed, is expired in the service life of coke adsorbent
Afterwards, coal-burning boiler can be fed directly to burn, has the characteristics that raw material availability is high.
The first inversely spraying device is provided in oil scrubber 2, the first inversely spraying device is used to elute oil to pyrolyzing coal gas blowout, take off
Except the pyrolysis coal gas after lubricating oil and tar enters oil scrubber 2 from bottom to top, the washing oil sprayed out with the first inversely spraying device is inverse
Stream contact, so that the crude benzol (90 ~ 95%) in pyrolysis coal gas enters washing oil after absorbing, the pyrolysis coal gas after taking off benzene is again
It is transported to and washes ammonia component progress the next step, and the washing oil containing benzene after taking off benzene operation is then transported to out-of-bounds device progress
Recycling.
Washing ammonia component includes Ammonic washing tower 3, and the second inversely spraying device is provided in Ammonic washing tower 3, and the second inversely spraying device is used for
Desalted water and poor ammoniacal liquor are drenched to pyrolyzing coal gas blowout, except the pyrolysis coal gas after benzene enters Ammonic washing tower 3 from bottom to top, with desalted water and poor
Ammoniacal liquor counter current contacting mass transfer, the ammonia and part light hydrocarbon being pyrolyzed in coal gas, which enter, to be washed liquid phase after ammonia and flow to 3 tower bottom of Ammonic washing tower, only
Pyrolysis coal gas after change is then transported to pretreater 4 and carries out the next step.
4 main function of pretreater is the benzene and naphthalene removed in unstripped gas, and the technique used in pretreater 4 is absorption method
Purification process is provided with coke adsorbent in pretreater 4, contact to remove with coke adsorbent by pyrolysis coal gas
The benzene and naphthalene being pyrolyzed in coal gas.
The pyrolysis coal gas for being stripped of benzene and naphthalene is transported to the progress of desulfurizing tower 5 organic sulfur (COS, CS again2) removing, organic sulfur
General there are two types of reformulations, and one is hydro-conversion, another kind is hydrolysis, and wherein hydrolysis is to reaction condition requirement
It is lower, and conversion cost is lower, therefore in the present embodiment, desulfurizing tower 5 is set as hydrolysis tower, the pyrolysis coal gas from pretreater 4
220 DEG C are first heated to, desulfurizing tower 5 is then entered by upper orifice and carries out following hydrolysis:
COS+H2O→H2S+CO2
CS2+2H2→2H2S+CO2
Since tempreture organic sulphur hydrolysis reaction is exothermic reaction, entire reaction process has about 30 DEG C of temperature rise, in order to abundant
Using this partial heat, in the present embodiment, the pyrolyzing coal by the high temperature pyrolysis coal gas after hydrolysis first with 5 inlet of desulfurizing tower
Gas exchanges heat, and is then cooled with circulating water again to 40 DEG C and enters back into next cleaning procedure.
Due to a small amount of mercury element contained in pyrolysis coal gas, during being pyrolyzed gas refrigeration, mercury metal can accelerate aluminium
The corrosion of material, causes METAL EMBRITTLEMENT, it is therefore desirable to remove to mercury, the pyrolysis coal gas after removing organic sulfur is transported to de-
Mercury tower 6 carries out demercuration, and sulfur loading active carbon adsorbent is provided in demercuration tower 6 and carries out adsorbing and removing to mercury, finally controls pyrolyzing coal
Total mercury content≤10ng/Nm in gas3。
Pyrolysis coal gas after demercuration is transported to depickling component again and carries out desulfurization, decarbonization process.Depickling component includes: de-
Sulphur absorption tower 7, the first cooler 8, the first gas-liquid separation filter 9, decarburization absorption tower 10, the second cooler 11 and the second gas
Liquid separator-filter 12.
Desulfuration absorbing tower 7 and demercuration tower 6 are connected, and are provided with the inversely spraying device of third in desulfuration absorbing tower 7, third is inversely sprayed
It drenches device and is used to drench pyrolyzing coal gas blowout IPE-MDEA selective desulfurization solution, the entrance and desulfuration absorbing tower 7 of the first cooler 8
Tower top outlet connect, the outlet of the entrance of the first gas-liquid separation filter 9 and the first cooler 8 connection, decarburization absorption tower 10
Entrance and the outlet of the first gas-liquid separation filter 9 connect, be provided with the 4th inversely spraying device in decarburization absorption tower 10, the 4th
Inversely spraying device is used to drench pyrolyzing coal gas blowout IPE-MDEA activity decarbonizing solution, and the entrance of the second cooler 11 and decarburization are inhaled
The outlet for receiving tower 10 is connected, and the outlet of the entrance of the second gas-liquid separation filter 12 and the second cooler 11 is connected.
Pyrolysis coal gas contacts in desulfuration absorbing tower 7 with IPE-MDEA selective desulfurization solution, so that a large amount of H2S and
Part CO2It is absorbed by IPE-MDEA selective desulfurization solution, finally obtains removing major part H2S and part CO2Level-one afterwards is de-
Sulphur gas and sulfur-bearing rich solution；Wherein sulfur-bearing rich solution is discharged from the tower bottom of desulfuration absorbing tower 7, and first grade desulfurizing gas is through desulfuration absorbing tower 7
Tower top be discharged and be transported in the first cooler 8 and carry out cooling down, conveyed after first grade desulfurizing air cooling is to 40 DEG C
To the first gas-liquid separation filter 9, separated in the first gas-liquid separation filter 9, the first grade desulfurizing gas that is purified and
IPE-MDEA selective desulfurization solution；IPE-MDEA selective desulfurization solution is discharged from 9 bottom of the first gas-liquid separation filter,
The first grade desulfurizing gas of purification is transported to decarburization absorption tower 10 and carries out decarburization, and the first grade desulfurizing gas of purification is in decarburization absorption tower 10
It is contacted with IPE-MDEA activity decarbonizing solution, so that remaining H in pyrolysis coal gas2S and CO2It is molten by IPE-MDEA activity decarburization
Liquid absorbs, and finally obtains removing H2S and CO2Decarbonization gas and carbon containing rich solution afterwards, wherein carbon containing rich solution is from decarburization absorption tower 10
Bottom discharge, decarbonization gas be discharged through the tower top of decarburization absorption tower 10 and be transported in the second cooler 11 cool down it is cold
But, the second gas-liquid separation filter 12 is transported to after decarbonization gas is cooled to 40 DEG C, in the second gas-liquid separation filter 12
It is separated, the pyrolysis coal gas and IPE-MDEA selective desulfurization solution being purified, wherein IPE-MDEA selective desulfurization
Solution is discharged from the bottom of the second gas-liquid separation filter 12, and the pyrolysis coal gas of purification is transported to dry component and is dried.
The outlet of the entrance of dry component and the second gas-liquid separation filter 12 is connected, and is provided with molecular sieve in dry component
Adsorbent is to carry out adsorbing and removing to the moisture in pyrolysis coal gas.After enabling dry component endlessly to export drying
Pyrolysis coal gas, in the present embodiment, dry component is set as including three drying towers, one primary heater 15, one
One cooler 16 and first separator 17, three drying towers include two main drying towers 13 and an auxiliary drying tower
14, the drying of main drying tower 13 and regeneration alternately, in the state that a main drying tower 13 is in dry, another trunk
Dry tower 13 is in regenerative process, and adsorbent of molecular sieve is arranged in drying tower.
Flow control valve is passed through by the pyrolysis coal gas that the second gas-liquid separation filter 12 exports first and is divided into two-way, wherein one
Road is fed directly to the main drying tower 13 in drying regime, contacts with the molecular sieve desiccant in main drying tower 13 will be pyrolyzed
Moisture in coal gas carries out adsorbing and removing, so that pyrolyzing coal is so incensed that with drying, and another way is then transported in reproduced state
Main drying tower 13.
The regenerative process of drying tower includes heating regeneration and blows cold two steps, in heating regenerative process, another way heat
Solution coal gas is first conveyed to auxiliary drying tower 14 and is dried, and is then transferred to primary heater 15 and heats up, works as heat
Solution coal gas is transported to the main drying tower 13 in reproduced state after being heated to 260 DEG C in primary heater 15, is pyrolyzed coal gas
The main drying tower 13 for being in reproduced state is rinsed, so that adsorbent of molecular sieve heats up, so that the water in adsorbent of molecular sieve
Get to desorb, pyrolysis coal gas is successively then passed through the first cooler 16 and the first separator 17 again, is finally passed through in dry
The main drying tower 13 of dry state is dried；During blowing cold, another way pyrolysis coal gas is firstly inputted in regeneration shape
The temperature of main drying tower 13 is down to room temperature, is then transported to primary heater 15 again and is heated by the main drying tower 13 of state,
It is delivered to auxiliary drying tower 14 again to carry out heating desorption regeneration to the molecular sieve desiccant in auxiliary drying tower 14, finally successively
It is transported to the main drying tower 13 in drying regime again and is dried by the first cooler 16, the first separator 17.It is dry
The main technique operating condition of process are as follows: adsorptive pressure 2.96MPa, adsorption temp≤40 DEG C, regeneration pressure 2.96MPa,
Regenerating inlet temperature is 260 DEG C, and reactivation outlet temperature is 180 DEG C.
The entrance of purification componentry connects with the outlet of dry component, and in the present embodiment, what purification componentry used is also to inhale
Attached technique, purification componentry by using adsorbent different pressures, at a temperature of the process design theory that has differences of adsorption capacity,
Carbon dioxide and heavy hydrocarbon in removing process gas is to meet LNG unit requirement.Purifying adsorbent is provided in purification componentry to make
For adsorbent, it is pyrolyzed coal gas and contacts to remove carbon dioxide and heavy hydrocarbon with purifying adsorbent.To enable purification componentry
Continuously transfer out pyrolysis coal gas, in the present embodiment, purification componentry be set as include three purification columns, one second plus
20, second coolers 21 of hot device and second separator 22, three purification columns include two main purification columns 18 and
One aided purification tower 19, the purifying and regeneration of main purification column 18 alternately, in a main purification column 18 are in the shape of purifying
Under state, another main purification column 18 is in regenerative process, and the purifying of purification componentry is consistent with regenerative process with the prior art, therefore
This is not repeated them here, and purifying adsorbent is arranged in purification column.
Liquefaction separation component includes ice chest 23, mixes hydrocarbon tower 24, dehydrogenation tower 25 and methane tower 26, ice chest 23 and purification column
Outlet, the outlet for mixing the entrance and ice chest 23 of hydrocarbon tower 24 are connected, and the outlet of the entrance of dehydrogenation tower 25 and mixed hydrocarbon tower 24 is connected,
The outlet of the entrance and dehydrogenation tower 25 of methane tower 26 is connected.The pyrolysis coal gas of purified component after purification is passed into first to ice chest
In 23 carry out sub-cooled separation, wherein separation after liquid phase based on C5+ component, and separate after gas phase be then transported to it is mixed
Hydrocarbon tower 24 carries out rectifying, so that C4 or more component and part C2, C3 group lease making whole in pyrolysis coal gas mixes 24 tower of hydrocarbon tower
Battery limit (BL) is transferred out as mixed hydrocarbon product after the outflow of bottom, the component come out from mixed 24 tower top of hydrocarbon tower is then transported to dehydrogenation tower 25 and carries out
Hydrogen extracts, and finally transfers out the gas phase based on hydrogen rich gas from 25 tower top of dehydrogenation tower, and contain a small amount of methane, CO and N2,
The liquid phase exported from 25 tower bottom of dehydrogenation tower then continues on to progress methane purification in methane tower 26, finally obtains LNG.
Circulate in multi-joint-production apparatus more smoothly to be pyrolyzed coal gas, the multi-joint-production apparatus of the present embodiment is also set up
There are helical-lobe compressor 27 and relay compressor 28, wherein the entrance of the outlet of helical-lobe compressor 27 and adsorbent equipment 1 is connected, heat
Solution coal gas first passes around is transported to the progress oil removing of adsorbent equipment 1, relay compressor 28 again after helical-lobe compressor 27 is compressed
It is arranged between pretreater 4 and desulfurizing tower 5, is connected respectively with pretreater 4 and desulfurizing tower 5, removes benzene by pretreater 4
After being first conveyed to the progress second-compressed of relay compressor 28 with the pyrolysis coal gas after naphthalene, then it is passed through to desulfurizing tower 5 and is taken off
Sulphur.
The present embodiment by a series of technological means to pyrolysis coal gas carry out purification separation, thus produce hydrogen rich gas, LNG and
Mixed hydrocarbon product improves the economic benefit of pyrolysis of coal so that the pyrolysis coal gas generated to pyrolysis of coal is able to carry out and makes full use of, real
The clean and effective for having showed coal utilizes, and achievees the purpose that energy-saving and emission-reduction, product maximizing the benefits.
Wherein, recycling and reusing is carried out in order to which desalted water after ammonia in liquid phase and poor ammoniacal liquor will be washed, washes ammonia component and also wraps
It includes: stripper 29 and reflux pump 30.Stripper 29 and Ammonic washing tower 3 are connected, and liquid phase is transported to the progress of stripper 29 after washing ammonia
Stripping removes ammonia, washes liquid phase after ammonia and is separated into poor ammonia solution after the stripping of stripper 29 is except ammonia and containing the stripping gas of ammonia, wherein
Poor ammonia solution is transported to reflux pump 30 through 29 tower bottom of stripper, then is transmitted back to the second inversely spraying device by reflux pump 30.
It can also be utilized effectively to be pyrolyzed the ammonia removed out in coal gas and part light hydrocarbon, to further increase
The utilization rate of big pyrolysis coal gas, washing ammonia component further includes condenser 31 and gas-liquid separator 32, condenser 31 and stripper 29
It connects, the stripping gas of 29 tower top of stripper output is transported to condenser 31 and carries out cooling down, gas-liquid separator 32 and condensation
Device 31 is connected, and stripping gas after cooling carries out separation to obtain hydrocarbonaceous gas-like phase and containing ammoniacal liquor in gas-liquid separator 32
Phase carries out wherein hydrocarbonaceous gas-like phase is transported to out-of-bounds fuel network management using phase containing ammoniacal liquor is then transported to boiler unit progress
It utilizes.
To enable the IPE-MDEA selective desulfurization solution after depickling operates, IPE-MDEA selective desulfurization solution
It is enough recycled, to reduce the production cost of multi-joint-production apparatus, in the present embodiment, depickling component further includes low pressure richness
Liquid flash tank 33, desulfurization regeneration tower 34, high pressure rich solution flash tank 36 and decarburization regenerator 37.
Low pressure rich solution flash tank 33 is connected to desulfuration absorbing tower 7 and the first gas-liquid separation filter 9, for collecting desulfurization
The IPE-MDEA selective desulfurization solution of sulfur-bearing rich solution and the discharge of the first gas-liquid separation filter 9 that absorption tower 7 is discharged, and
Two kinds of solution are flashed, desulfurization regeneration tower 34 and low pressure rich solution flash tank 33 are connected, and the is provided in desulfurization regeneration tower 34
One poor rich liquid heat exchanger 35；High pressure rich solution flash tank 36 is connected to decarburization absorption tower 10 and the second gas-liquid separation filter 12,
For collecting the IPE-MDEA of the carbon containing rich solution that the decarburization absorption tower 10 is discharged and the discharge of the second gas-liquid separation filter 12
Active decarbonizing solution, and two kinds of solution are flashed, decarburization regenerator 37 and high pressure rich solution flash tank 36 are connected, decarburization regeneration
The second poor rich liquid heat exchanger 38 is provided in tower 37.
Via the sulfur-bearing rich solution of 7 bottom of desulfuration absorbing tower discharge and the IPE- of the first gas-liquid separation filter 9 discharge
MDEA selective desulfurization solution is transported to low pressure rich solution flash tank 33 and is flashed, containing after obtaining flashed vapour and flashing
Sulphur rich solution, the sulfur-bearing rich solution after flash distillation is transported to the first poor rich liquid heat exchanger 35 and the lean solution of 34 tower bottom of desulfurization regeneration tower carries out
Heat exchange, is then transported in desulfurization regeneration tower 34 again and is regenerated, flashed vapour is then back to the entrance of relay compressor 28.Through
It is taken off by the IPE-MDEA activity that the carbon containing rich solution and the second gas-liquid separation filter 12 of the discharge of 10 bottom of decarburization absorption tower are discharged
Carbon solution is transported to high pressure rich solution flash tank 36 and is flashed, the carbon containing rich solution after obtaining flashed vapour and flash distillation, flash distillation
Carbon containing rich solution afterwards is transported to the second poor rich liquid heat exchanger 38 and the lean solution of 37 tower bottom of decarburization regenerator exchanges heat, then again
It is transported in decarburization regenerator 37 and is regenerated.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes among the protection scope created still in the utility model.
Claims (10)
1. the multi-joint-production apparatus of a kind of pyrolysis coal gas hydrogen rich gas, LNG, mixed hydrocarbon characterized by comprising
The adsorbent equipment (1) successively laid, oil scrubber (2), deamination component, pretreater (4), desulfurizing tower (5), demercuration tower (6),
Depickling component, dry component, purification componentry, to oil, crude benzol, ammonia, benzene and naphthalene, the organic sulfur, mercury, vulcanization in pyrolysis coal gas
Hydrogen, carbon dioxide, moisture, carbon dioxide and heavy hydrocarbon are successively removed；
And liquefaction separation component, entrance are connected with the outlet of the purification componentry, for carrying out liquefaction point to pyrolysis coal gas
From to coproduction hydrogen rich gas, LNG and mixed hydrocarbon.
2. multi-joint-production apparatus according to claim 1, which is characterized in that it is reverse to be provided with first in the oil scrubber (2)
Spray thrower, the first inversely spraying device is used to elute oil to pyrolyzing coal gas blowout so that the pyrolysis coal gas and washing oil adverse current
Contact；And/or
The deamination component includes Ammonic washing tower (3), and the second inversely spraying device is arranged inside, and the second inversely spraying device is used for
Desalted water and poor ammoniacal liquor are drenched to pyrolyzing coal gas blowout, coal gas is pyrolyzed and liquid phase and washes gas phase after ammonia after Ammonic washing tower (3) is separated into and washes ammonia,
Ammonia in pyrolysis coal gas is present in wash ammonia after in liquid phase.
3. multi-joint-production apparatus according to claim 2, which is characterized in that the deamination component further include:
Stripper (29) is connected with the Ammonic washing tower (3), and the liquid phase after ammonia of washing for obtaining to Ammonic washing tower (3) carries out stripping and removes
Ammonia；
Reflux pump (30) is connected with the stripper (29), inverse for the poor ammonia solution after stripping except ammonia to be transmitted back to second
To spray thrower.
4. multi-joint-production apparatus according to claim 1, which is characterized in that the desulfurizing tower (5) is hydrolysis tower, is pyrolyzed coal gas
In organic sulfur be hydrolyzed in the desulfurizing tower reaction to be removed.
5. multi-joint-production apparatus according to claim 1, which is characterized in that the depickling component includes:
Desulfuration absorbing tower (7) is connected with the demercuration tower (6), the inversely spraying device of third is arranged inside, the third is inversely sprayed
Device is drenched to be used for pyrolyzing coal gas blowout leaching IPE-MDEA selective desulfurization solution to obtain removing most of H2S and part CO2Afterwards
First grade desulfurizing gas and sulfur-bearing rich solution；
First cooler (8), for being cooled down to the first grade desulfurizing gas；
First gas-liquid separation filter (9), for being separated the level-one to be purified to the first grade desulfurizing gas by cooling
Sweet gas；
Decarburization absorption tower (10) is connected with the desulfuration absorbing tower (7), is arranged inside the 4th inversely spraying device, and the described 4th
Inversely spraying device is used for pyrolyzing coal gas blowout leaching IPE-MDEA activity decarbonizing solution to obtain decarbonization gas and carbon containing rich solution；
Second cooler (11), for being cooled down to the decarbonization gas；
Second gas-liquid separation filter (12), for being separated the pyrolyzing coal to be purified to the decarbonization gas by cooling
Gas.
6. multi-joint-production apparatus according to claim 5, which is characterized in that the depickling component further include:
Low pressure rich solution flash tank (33) connects with the desulfuration absorbing tower (7) and first gas-liquid separation filter (9)
It is logical, what sulfur-bearing rich solution and the first gas-liquid separation filter (9) for collecting the desulfuration absorbing tower (7) discharge were discharged
IPE-MDEA selective desulfurization solution, and two kinds of solution are flashed；
Desulfurization regeneration tower (34), bottom are provided with the first poor rich liquid heat exchanger (35), low pressure rich solution flash tank (33) row
Sulfur-bearing rich solution out enters desulfurization again after exchanging heat via the lean solution at the first poor rich liquid heat exchanger (35) and desulfurization regeneration tower (34) bottom
Raw tower (34) regeneration；
High pressure rich solution flash tank (36) connects with the decarburization absorption tower (10) and second gas-liquid separation filter (12)
It is logical, what carbon containing rich solution and the second gas-liquid separation filter (12) for collecting decarburization absorption tower (10) discharge were discharged
IPE-MDEA activity decarbonizing solution, and two kinds of solution are flashed；
Decarburization regenerator (37), bottom are provided with the second poor rich liquid heat exchanger (38), high pressure rich solution flash tank (36) row
Carbon containing rich solution out enters decarburization again after exchanging heat via the lean solution at the second poor rich liquid heat exchanger (38) and decarburization regenerator (37) bottom
Raw tower (37) regeneration.
7. multi-joint-production apparatus according to claim 1, which is characterized in that the liquefaction separation component includes:
The outlet of ice chest (23), entrance and the purification componentry is connected, for pyrolysis coal gas after purification to be carried out low temperature point
From obtaining the liquid phase based on C5+ component；
Mixed hydrocarbon tower (24) are connected with the ice chest (23), for carrying out rectifying to the gas phase obtained after cryogenic separation, are mixed
Hydrocarbon product；
Dehydrogenation tower (25) is connected with mixed hydrocarbon tower (24), and the hydrogen in gaseous component for exporting mixed hydrocarbon tower (24) carries out
It extracts, obtains hydrogen rich gas；
And methane tower (26), it is connected with dehydrogenation tower (25), the methane in gaseous component for being exported to dehydrogenation tower (25)
It is purified, obtains LNG.
8. multi-joint-production apparatus according to claim 1, which is characterized in that the multi-joint-production apparatus further includes helical-lobe compressor
(27), the outlet of the helical-lobe compressor (27) is connected with the entrance of the adsorbent equipment (1), and the helical-lobe compressor (27) is used
It is compressed in coal gas will be pyrolyzed.
9. multi-joint-production apparatus according to claim 1, which is characterized in that the pretreater (4) and the desulfurizing tower (5)
Between be additionally provided with relay compressor (28).
10. multi-joint-production apparatus according to claim 1 or 2, which is characterized in that be provided with coke in the adsorbent equipment (1)
Carbon adsorbent, to adsorb lubricating oil and tar in pyrolysis coal gas；
Coke adsorbent is provided in the pretreater (4) to remove benzene and naphthalene in pyrolysis coal gas；
Sulfur loading active carbon adsorbent is provided in the demercuration tower (6) to adsorb the mercury in pyrolysis coal gas；
Be provided in the dry component adsorbent of molecular sieve with to the moisture in pyrolysis coal gas into adsorbing and removing；
Purifying adsorbent is provided in the purification componentry to the carbon dioxide and heavy hydrocarbon progress adsorbing and removing in pyrolysis coal gas.
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|---|---|---|---|
| CN201920120335.5U CN209024471U (en) | 2019-01-23 | 2019-01-23 | A kind of multi-joint-production apparatus being pyrolyzed coal gas hydrogen rich gas, LNG, mixed hydrocarbon |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113717758A (en) * | 2021-08-27 | 2021-11-30 | 山东津挚环保科技有限公司 | Synthetic gas desulfurization and decarbonization system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113717758A (en) * | 2021-08-27 | 2021-11-30 | 山东津挚环保科技有限公司 | Synthetic gas desulfurization and decarbonization system |
| CN113717758B (en) * | 2021-08-27 | 2024-02-09 | 山东津挚环保科技有限公司 | Desulfurization and decarbonization system for synthesis gas |
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