CN106047414A - Method for preparing biomass gas based on vegetation leaves - Google Patents
Method for preparing biomass gas based on vegetation leaves Download PDFInfo
- Publication number
- CN106047414A CN106047414A CN201610436102.7A CN201610436102A CN106047414A CN 106047414 A CN106047414 A CN 106047414A CN 201610436102 A CN201610436102 A CN 201610436102A CN 106047414 A CN106047414 A CN 106047414A
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- Prior art keywords
- gas
- temperature
- catalyst
- mixture
- leaves
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
- C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
- C10K1/101—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids with water only
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/0916—Biomass
- C10J2300/092—Wood, cellulose
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
- C10J2300/1615—Stripping
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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
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Abstract
The invention discloses a method for preparing a biomass gas based on vegetation leaves. The method comprises the following steps of performing hydrothermal liquidation treatment on leaves and hot water in the presence of a first catalyst, thereby obtaining a first non-condensable gas and a first liquid mixture; performing pyrolysis and gasification treatment on the first liquid mixture in the presence of a second catalyst, thereby obtaining a second non-condensable gas; and performing purification and impurity removal. The biomass gas prepared by the method is high in yield; sodium carbonate and rare earth lanthanum are taken as catalysts for hydrothermal liquidation treatment, so that leaf substances are liquefied into hydrocarbon liquid substances with high boiling points, the liquidation treatment temperature and liquidation treatment pressure are reduced, the liquidation treatment time is shortened, and the liquidation efficiency is improved; the leaf pyrolysis is adopted to synthetize the biomass gas, so that the method is simple in process, full in biomass material utilization and free from additional processing for the leaves, and can be used for lowering the production cost.
Description
Technical field
The invention belongs to biomass technical field, particularly relate to a kind of side preparing biological fuel gas based on vegetation leaf thing
Method.
Background technology
The cotyledon of biological preparation or blade aging carry out centralized collection process after dropping, and particularly mountain forest, accumulate throughout the year
Leaves be not utilized, and be susceptible to forest fire.
Biological fuel gas is a kind of with biomass as raw material, uses catalytic pyrolysis gasification technology and device, produce stably,
Cleaning, safe, economic biological fuel gas, wherein mainly contain the imflammable gas such as hydrogen, carbon monoxide, methane, ethane, be
A kind of more clean compared with natural gas, coal gas, the higher fuel gas of calorific value, and can as industrial chemicals gas, the most derivative very
Multi-chemistry.
Biomass are utilized to prepare the research of biological fuel gas or biological fuel gas more, such as: application number position
The application for a patent for invention of 200610017164.0 discloses one and utilizes biomass continuous carbonization to prepare technique and the device of combustion gas,
Preparation and feeding, the gasification of raw material, the purification of combustion gas and conveying, carbon removal recovery process including raw material；Also include this work
Device needed for skill: Feedstock treating feed system, gas retort fuel gas generating system, gas-purification also carry storage system, carbon removal
Recovery system, this invention prepares combustion gas and carries out mainly by the method for continuous carbonization, and biomass conversion ratio is low, gas combustion heat
It is worth low；And for example the application for a patent for invention of Application No. 200710037007.0 discloses and a kind of prepares for material gasification with biomass
The method and apparatus of combustion gas, described method comprises the steps: that (1), by biomass material coarse crushing, sends into low temperature pyrogenation stove, biological
Matter 300～500 DEG C, pyrolytic reaction generates pyrolysis principal product biomass semicoke under the conditions of pressure 0.3～3.5MPa, then grind
To particle diameter ＜ 300 μm；(2) by gasifying agent that the biomass semicoke of particle diameter ＜ 300 μm, pyrolytic tar, temperature are 400～500 DEG C
By being arranged on the different passages of the nozzle of top of gasification furnace, enter gasification furnace, react at 100～1250 DEG C, it is thus achieved that be clean
Combustion gas, the gasification temperature of the method is high (＞ 1000 DEG C), and biomass at high temperature easily carbonization, waste residue is many, reduces biomass
The conversion ratio of combustion gas.And for example Application No. 201010268659.7 (" a kind of side utilizing diseases on plant stalk to prepare biological fuel gas
Method ") in describe the method utilizing diseases on plant stalk to prepare biological fuel gas, carry out successively at hydrothermal liquefaction including to diseases on plant stalk
Reason, cracking gasification process.
Summary of the invention
It is an object of the invention to provide a kind of method preparing biological fuel gas based on vegetation leaf thing, pass through, solve
Existing problem.
For solving above-mentioned technical problem, the present invention is achieved by the following technical solutions:
The present invention is a kind of method preparing biological fuel gas based on vegetation leaf thing, comprises the steps,
A leaves, hot water, under the first catalyst action, carry out hydrothermal liquefaction process, prepare the first incoagulable gas and the
One liquefied mixture；
B the first liquefied mixture, under the second catalyst action, carries out cracking, gasification process, obtains the second incoagulability gas
Body；
First, second incoagulable gas is carried out purifying by c, remove impurity, to obtain final product,
Wherein, described first catalyst is the mixture of sodium carbonate and lanthana；Described second catalyst is sodium carbonate, oxygen
Change lanthanum, the mixture of nikel powder.
Further, the temperature that in described step a, hydrothermal liquefaction processes is 385-450 DEG C, and absolute pressure is 12-18MPa,
The process time is 5-10min；Liquefaction process after product at reduced pressure after be-0.53MPa in relative pressure, temperature is to enter at 180 DEG C
Row evaporation, obtains the first described incoagulable gas and the first liquified mixt.
Further, in described step b, cracking, the temperature of gasification process are 600-700 DEG C, and absolute pressure is 26-
28MPa, the process time is 10-15min；Being-0.03MPa by cracking, product after gasification process in relative pressure, temperature is
It is evaporated at 150 DEG C, obtains the second described incoagulable gas.
Further, in described step a the temperature of hot water at 90-100 DEG C, it is simple to directly carry out hydrothermal liquefaction process, logical
Superheated water tentatively carries out carrying out leaves the discharge of waste gas, improves the gas purity that hydrothermal liquefaction processes, discharges to greatest extent
Impurity.
The method have the advantages that
Biological fuel gas yield prepared by the present invention is high, the catalyst processed for hydrothermal liquefaction with sodium carbonate and Rare Earth Lanthanum,
Make the liquefaction of leaves material for high-boiling hydrocarbon liquid object, reduce liquefaction treatment temperature and liquefaction processing pressure, shorten liquefaction
The process time, improve liquefaction efficiency, by employing, leaves carried out cracking and be combined to biological fuel gas, there is technique simple,
Make full use of biological material, leaves can be processed without carrying out additional processing, reduce production cost.
Certainly, the arbitrary product implementing the present invention it is not absolutely required to reach all the above advantage simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, embodiment will be described required use below
Accompanying drawing is briefly described, it should be apparent that, the accompanying drawing in describing below is only some embodiments of the present invention, for ability
From the point of view of the those of ordinary skill of territory, on the premise of not paying creative work, it is also possible to obtain the attached of other according to these accompanying drawings
Figure.
Fig. 1 is the flow chart of a kind of method preparing biological fuel gas based on vegetation leaf thing of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, those of ordinary skill in the art obtained under not making creative work premise all other
Embodiment, broadly falls into the scope of protection of the invention.
The present invention is a kind of method preparing biological fuel gas based on vegetation leaf thing, including.
Raw material prepares: leaves is the most standby.
Hydrothermal liquefaction processes
Leaves and the first catalyst are mixed, then adds hot water and stir, prepare mixed material, wherein, the first catalysis
Agent is the mixture of sodium carbonate and lanthana；
Mixed material is sent into Vertieal pulping mill and makes pulpous state leaves slurry；
Leaves is pumped to shell-and-tube preheater by high-pressure plunger and preheats, and obtains preheating slurry, wherein, preheats slurry
Temperature be 230 DEG C；
Preheating slurry high-pressure plunger is pumped in liquefying reactor, is passed through gasification in the bottom of liquefying reactor simultaneously
Agent hydrogen, promotes liquefaction reaction quickly to carry out, and the temperature of the hydrogen being wherein passed through is 230 DEG C, and absolute pressure is 10MPa, along with
The carrying out of liquefaction reaction, in liquefying reactor, temperature gradually rises；
Temperature in reactor to be liquefied, to after 260 DEG C, reduces the temperature of the hydrogen being passed through bottom liquefying reactor
For 10-25 DEG C, by the amount of the hydrogen that automatic pressure-reducing regulation valve regulation is passed through, the temperature in regulation liquefying reactor, pressure, make
Temperature in liquefying reactor remains 385 DEG C, and absolute pressure is 10MPa, carries out hydrothermal liquefaction process, obtains liquefaction mixing
Thing, the process time that wherein hydrothermal liquefaction processes is 5min；
By liquified mixt in high-pressure buffer vessel sent into by automatic high pressure air relief valve, make the relative pressure of liquified mixt
Being reduced to 0.2MPa, temperature is reduced to 200-210 DEG C, is then fed in the first flash tank, and the relative pressure in flash tank is-
0.03MPa, temperature are 180 DEG C, and liquified mixt evaporates in flash tank, form the first gaseous mixture and the mixing of the first liquid
Thing, wherein:
First gaseous mixture enters condenser after the top of flash tank is discharged, and under the effect of condenser, gaseous state mixes
Incoagulable gas in compound is discharged from condenser overhead, forms the first incoagulable gas, enters synthesis gas pipeline；First gaseous state
Discharge bottom condenser after the high boiling point small organic molecule condensation of water vapour in mixture and gas form, reclaim, enter
Row recycles；
First liquefied mixture is discharged in the middle part of flash tank；
Being solid ash and sodium carbonate-lanthanum oxide catalyst bottom flash tank, through separating, catalyst is reusable,
It is fertile that ash can manufacture agriculture.
Cracking, gasification process
First liquefied mixture and the second catalyst are sent in blending tank, mix homogeneously, then will with high-pressure plunger pump
The first liquefied mixture mixed homogeneously with the second catalyst sends into hotline heater, is heated to 330 DEG C, and wherein, second urges
Agent is the mixture of sodium carbonate, lanthana, nikel powder；
The first liquefied mixture after heating is sent in high-pressure reaction pot, is passed through gas in the bottom of high-pressure reaction pot simultaneously
Agent hydrogen, promotes cracking, gasification reaction quickly to carry out, and the temperature of the hydrogen being wherein passed through is 330 DEG C, and absolute pressure is
10MPa, along with the carrying out of liquefaction reaction, in high-pressure reaction pot, temperature gradually rises；
Treat that temperature in high-pressure reaction pot, to after 600 DEG C, reduces the temperature of the hydrogen being passed through bottom liquefying reactor
For 10-25 DEG C, the amount of the hydrogen that regulation is passed through, the temperature in regulation liquefying reactor, pressure, make the temperature in high-pressure reaction pot
Remaining 600 DEG C, absolute pressure is 26MPa, carries out cracking, gasification process, obtains cracking vaporized mixture, wherein cracks gasification
The process time processed is 10min；
By cracking vaporized mixture in high-pressure buffer vessel sent into by automatic high pressure air relief valve, make the absolute of vaporized mixture
Pressure is down to 0.2MPa, and temperature is reduced to 240-250 DEG C, is then fed into the second flash tank, carries out gas-liquid-solid separation, in flash tank
Relative pressure be-0.03MPa, temperature be 150 DEG C, cracking vaporized mixture evaporate in flash tank, forms the second gaseous state mixed
Compound and the second liquefied mixture, wherein:
Second gaseous mixture enters condenser, under the effect of condenser, the second gas after the top of flash tank is discharged
Incoagulable gas in state mixture is discharged from condenser overhead, forms the second incoagulable gas；In second gaseous mixture
The condensed condensate of high boiling point organic compound of water vapour and gas form is discharged bottom condenser, is reclaimed, and is circulated and makes
With；
Second liquefied mixture and the second catalyst are discharged bottom flash tank, separated after continue to be fed into high-pressure reaction pot
Carrying out cracking gasification process, the second catalyst recycles.
Purified treatment
After the second incoagulable gas discharged from condenser overhead and the mixing of the first incoagulable gas, enter water washing cleaning
Tower, from purifying column top spray tap water, carries out ion, makes the temperature of incoagulable gas be reduced to less than 30 DEG C simultaneously,
After entrained solid ash and oils are washed with water and wash in gas, forming cleaning mixture and separate with gas, cleaning mixture carries out profit and divides
From, the oily substance of isolated carries out gasification process in sending into gasification reactor；
Incoagulable gas after purifying column water washs enters stainless steel cloth stuffing washing tower, from tower top spray washing
Water, purifies further, removes in gas and carries tiny grit and oil droplet secretly；
Incoagulable gas after stuffing washing tower purifies enters dehydrating tower, carries out condensing, adsorbing, in incoagulable gas
The moisture contained forms condensed water, separates with incoagulable gas, obtains biological fuel gas, wherein, and the temperature of gas in dehydrating tower
It it is 28 DEG C.
The biological fuel gas prepared is according to GB GB/T 10410-2008 (artificial coal gas and liquefied petroleum gas major constituents
Gas chromatography) standard or method detect.
In the description of this specification, the description of reference term " embodiment ", " example ", " concrete example " etc. means
The specific features that describes in conjunction with this embodiment or example, structure, material are lived feature and are contained at least one of the present invention and implement
In example or example.In this manual, the schematic representation to above-mentioned term is not necessarily referring to identical embodiment or example.
And, the specific features of description, structure, material or feature can be to close in any one or more embodiments or example
Suitable mode combines.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.Preferred embodiment is the most detailed
Describe all of details, be also not intended to the detailed description of the invention that this invention is only described.Obviously, according to the content of this specification,
Can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is to preferably explain the present invention
Principle and actual application so that skilled artisan can be best understood by and utilize the present invention.The present invention is only
Limited by claims and four corner thereof and equivalent.
Claims (4)
1. the method preparing biological fuel gas based on vegetation leaf thing, it is characterised in that: comprise the steps,
A leaves, hot water, under the first catalyst action, carry out hydrothermal liquefaction process, prepare the first incoagulable gas and the first liquid
State mixture；
B the first liquefied mixture, under the second catalyst action, carries out cracking, gasification process, obtains the second incoagulable gas；
First, second incoagulable gas is carried out purifying by c, remove impurity, to obtain final product,
Wherein, described first catalyst is the mixture of sodium carbonate and lanthana；Described second catalyst is sodium carbonate, oxidation
Lanthanum, the mixture of nikel powder.
A kind of method preparing biological fuel gas based on vegetation leaf thing the most according to claim 1, it is characterised in that described
The temperature that in step a, hydrothermal liquefaction processes is 385-450 DEG C, and absolute pressure is 12-18MPa, and the process time is 5-10min；Liquid
Change process after product at reduced pressure after be-0.53MPa in relative pressure, temperature is to be evaporated at 180 DEG C, obtains described first
Incoagulable gas and the first liquified mixt.
A kind of method preparing biological fuel gas based on vegetation leaf thing the most according to claim 1, it is characterised in that described
Crack in step b, the temperature of gasification process is 600-700 DEG C, and absolute pressure is 26-28MPa, and the process time is 10-15min；
Being-0.03MPa by cracking, product after gasification process in relative pressure, temperature is to be evaporated at 150 DEG C, obtains described
Second incoagulable gas.
A kind of method preparing biological fuel gas based on vegetation leaf thing the most according to claim 1, it is characterised in that described
In step a, the temperature of hot water is at 90-100 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610436102.7A CN106047414A (en) | 2016-06-16 | 2016-06-16 | Method for preparing biomass gas based on vegetation leaves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610436102.7A CN106047414A (en) | 2016-06-16 | 2016-06-16 | Method for preparing biomass gas based on vegetation leaves |
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| CN106047414A true CN106047414A (en) | 2016-10-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019093949A1 (en) | 2017-11-07 | 2019-05-16 | Kiram Ab | Thermochemical conversion of biomass |
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|---|---|---|---|---|
| JP2002059118A (en) * | 2000-08-23 | 2002-02-26 | Nobuyuki Hayashi | Method of pressure hydrothermally decomposing plant based biomass and system therefor |
| CN102382683A (en) * | 2010-08-31 | 2012-03-21 | 北京金骄生物质化工有限公司 | Method for preparing biomass gas from plant branches and trunks |
| CN102888254B (en) * | 2012-10-16 | 2014-08-13 | 上海馨合环保科技有限公司 | Method for producing liquid fuel by cellulose biomass |
| CN104690068A (en) * | 2015-02-11 | 2015-06-10 | 中原工学院 | Method for preparing hydrothermal coke from biomass |
-
2016
- 2016-06-16 CN CN201610436102.7A patent/CN106047414A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002059118A (en) * | 2000-08-23 | 2002-02-26 | Nobuyuki Hayashi | Method of pressure hydrothermally decomposing plant based biomass and system therefor |
| CN102382683A (en) * | 2010-08-31 | 2012-03-21 | 北京金骄生物质化工有限公司 | Method for preparing biomass gas from plant branches and trunks |
| CN102888254B (en) * | 2012-10-16 | 2014-08-13 | 上海馨合环保科技有限公司 | Method for producing liquid fuel by cellulose biomass |
| CN104690068A (en) * | 2015-02-11 | 2015-06-10 | 中原工学院 | Method for preparing hydrothermal coke from biomass |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019093949A1 (en) | 2017-11-07 | 2019-05-16 | Kiram Ab | Thermochemical conversion of biomass |
| EP3707223A4 (en) * | 2017-11-07 | 2021-08-25 | Kiram AB | Thermochemical conversion of biomass |
| US11149221B2 (en) | 2017-11-07 | 2021-10-19 | Kiram Ab | Thermochemical conversion of biomass |
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Address after: Granite County of Hefei City, Anhui province 231243 Feixi Zhenyuan Sun Ji Xiang textile factory Applicant after: Anhui new agricultural Limited by Share Ltd Address before: Granite County of Hefei City, Anhui province 231243 Feixi Zhenyuan Sun Ji Xiang textile factory Applicant before: ANHUI XINSHENGLI BIOLOGY TECHNOLOGY CO., LTD. |
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Application publication date: 20161026 |