CN104593089A - Self-heat supply type biomass oil gas co-production process - Google Patents
Self-heat supply type biomass oil gas co-production process Download PDFInfo
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- CN104593089A CN104593089A CN201410804521.2A CN201410804521A CN104593089A CN 104593089 A CN104593089 A CN 104593089A CN 201410804521 A CN201410804521 A CN 201410804521A CN 104593089 A CN104593089 A CN 104593089A
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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
- C10J3/58—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels combined with pre-distillation of the fuel
- C10J3/60—Processes
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1011—Biomass
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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
- 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
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- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Industrial Gases (AREA)
- Processing Of Solid Wastes (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention relates to a self-heat supply type biomass oil gas co-production process comprising the following steps: (a) respectively preparing high-tar pyrolysis gas and low-tar gasification gas by utilizing biomass pyrolysis and biomass gasification in a reaction furnace; (b) respectively educing the high-tar pyrolysis gas and the low-tar gasification gas; and (c) purifying the high-tar pyrolysis gas and the low-tar gasification gas and separating bio-oil and biogas. By utilizing the self-heat supply type biomass oil gas co-production process, pyrolysis and gasification coupling of biomass are carried out in the same reaction furnace, most volatiles of the biomass are firstly removed through forced flash pyrolysis so that the high-tar pyrolysis gas is prepared, then the low-tar gasification gas is prepared through gasification reaction of the biomass, after that, the high-tar pyrolysis gas and the low-tar gasification gas are respectively purified and separated to realize co-production of biogas and bio-oil, and then device investment and management cost can be reduced. The self-heat supply type biomass oil gas co-production process can be applied to co-production of bio-oil and biogas.
Description
Technical field
The present invention relates to biomass thermal chemical conversion field, particularly a kind of self-supplying heat biomass oil gas joint process.
Background technology
Biomass pyrogenation gasification technology is the important technology direction of biomass energy thermochemical study, it can produce the higher secondary energy of the grades such as heating power, electric power, liquid fuel, geseous fuel, industry and civil area can be widely used in, alternative conventional fossil fuel, to a certain degree alleviates the shortage of current traditional fossil energy and the pressure that brings of environmental pollution.
At present, biomass pyrogenation gasification technology application mode is industrially substantially: pyrolytic technique, separately gasification technology, both simple sequential combination separately.The independent pyrolytic technique of biomass belongs to pressure pyrolysis, can realize the abundant pyrolysis of biomass, can reduce product separation difficulty, but need outside to provide thermal source.The independent gasification technology of biomass uses gasifying medium to make reagent, can realize from heat supply, the heat that pyrolysis relies on zone of oxidation to provide is spontaneous to carry out, because oxidated layer thickness is certain, biomass pyrolytic is incomplete, most of volatile cannot discharge and in reduction zone reaction, can produce much tar, increases difficulty to follow-up isolation of purified process.
And although the two simple combination combines both advantages to a certain extent, be industrially only equal to the operation of two complete equipments, facility investment and the handling cost of operation can be increased.
Summary of the invention
In order to overcome above-mentioned technical problem, the object of the present invention is to provide a kind of cost-saving self-supplying heat biomass oil gas joint process.
The technical solution adopted in the present invention is:
A kind of self-supplying heat biomass oil gas joint process, comprises the following steps:
A. in Reaktionsofen, utilize biomass pyrolytic and gasifying biomass to prepare high tar pyrolysis gas and low tar gasification gas respectively;
B. high tar pyrolysis gas and low tar gasification gas is derived respectively;
C. high tar pyrolysis gas and low tar gasification gas therefrom isolate bio oil and biogas is purified.
As the further improvement of technique scheme, in described step a, the solid product after biomass pyrolytic is as the raw material of gasifying biomass.
As the further improvement of technique scheme, generate the heat supply of high-temperature flue gas form biomass pyrolysis by the carbon residue after biomass burning gasification.
As the further improvement of technique scheme, high-temperature flue gas is transmitted by pipeline and biomass fermentation heat-dissipating.
As the further improvement of technique scheme, regulate temperature and the exhaust gas volumn of high-temperature flue gas, control the temperature of biomass pyrolytic at 450 ~ 600 DEG C.
As the further improvement of technique scheme, pass into air to the solid product after pyrolysis, make it form zone of oxidation and reducing zone from top to bottom, the low tar gasification gas in step b is derived by reducing zone.
As the further improvement of technique scheme, separated by material controlling fire grate between the pyrolysis zone of biomass pyrolytic and the gasification zone of gasifying biomass, automatically control the start and stop of material controlling fire grate, ensure the residence time of biomass in pyrolysis zone.
As the further improvement of technique scheme, in described step c, high tar pyrolysis gas and low tar gasification gas are adopted to mode separating bio gas and the bio oil of condensation after first dedusting.
As the further improvement of technique scheme, high tar pyrolysis gas uses the technique of condensed in two stages, and low tar gasification gas adopts the technique of one-level condensation.
As the further improvement of technique scheme, the gasify one-level condensation of gas of the second stage condensation of high tar pyrolysis gas and low tar adopts same condenser.
The invention has the beneficial effects as follows: the pyrolysis of biomass and gasification are coupling in same Reaktionsofen and carry out by the present invention, by forcing fast pyrogenation, first removing biomass overwhelming majority meeting volatile matter, producing high tar pyrolysis gas; Again by the gasification reaction of biomass, produce low tar gasification gas, afterwards to purification respectively, the separating treatment of two kinds of gases, realize the coproduction of biogas and bio oil, thus facility investment and handling cost can be reduced.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, the present invention is further described.
Fig. 1 be present invention process adopt the schematic diagram of equipment.
Embodiment
A kind of self-supplying heat biomass oil gas joint process, comprises the following steps:
A. in Reaktionsofen 1, utilize biomass pyrolytic and gasifying biomass to prepare high tar pyrolysis gas and low tar gasification gas respectively;
B. high tar pyrolysis gas and low tar gasification gas is derived respectively;
C. high tar pyrolysis gas and low tar gasification gas therefrom isolate bio oil and biogas is purified.
As shown in Figure 1, pyrolysis zone 101 and gasification zone is divided into successively from top to bottom in Reaktionsofen 1.Wherein the top of pyrolysis zone 101 is the feeding-passage of biomass.Pyrolysis zone 101 is provided with the pyrolysis gas outlet 3 passing to Reaktionsofen 1 outside, and biomass are passed through to heat and fast pyrogenation in pyrolysis zone 101, and biomass volatile matter fully removes, and the high tar pyrolysis gas of generation is derived from pyrolysis gas outlet 3.Gasification zone is used for the gasification reaction of biomass, generates the gasification gas of low tar, is provided with the gasification gas outlet 4 passing to Reaktionsofen 1 outside in gasification zone, and low tar gasification gas exports 4 by the gas that gasifies is derived.
In embodiment, the biomass of pyrolysis zone 101 can produce solid product after pyrolysis, include the defective material comprising charcoal, also residual higher heat in these defective materials, after pyrolysis in Reaktionsofen 1 to falling in gasification zone, as the raw material of gasifying biomass.
The inlet pipe 12 of the middle access more than two or two of Reaktionsofen 1, for gasification zone provides air as gasifying medium, gasification zone solid product forms zone of oxidation 102 and reducing zone 103 from top to bottom, and the low tar gasification gas in step b is derived by reducing zone 103.
The bottom of Reaktionsofen 1 reducing zone 103 is provided with carbon residue fire grate 9, is provided with carbon residue room 10 below carbon residue fire grate 9, opens carbon residue fire grate 9 and the carbon residue after gasifying biomass can be drained into carbon residue room 10 and store.Also there is certain calorific value in these carbon residues, therefore be transported to roasting kiln 2 combustion by spiral 11, generate high-temperature flue gas, and provide the heat needed for the biomass pyrolytic of pyrolysis zone 101 by the temperature of high-temperature flue gas, thus greatly improve the heat utilization ratio of biomass, conserve energy.
Preferably, the heat supply of high-temperature flue gas to pyrolysis zone 101 realizes in the following manner:
High-temperature flue gas drains in a heating unit by exhaust gases passes 5, and this heating unit comprises the circulating line 7 and central duct 8 that are interconnected, and circulating line 7 is centered around periphery, pyrolysis zone 101, and central duct 8 penetrates in the middle part of pyrolysis zone 101.After high-temperature flue gas passes into circulating line 7 and central duct 8, exchange at tube wall and biomass fermentation heat-dissipating and come its heat supply, like this can not contaminated feedstock.The top of circulating line 7 and central duct 8 is provided with flue gas general export.
Can regulate the degree of burning in addition in roasting kiln 2, also in exhaust gases passes 5, can control its aperture by mounted valve, thus regulate flue-gas temperature and exhaust gas volumn, in maintenance pyrolysis zone 101, pyrolysis temperature is at 450 ~ 600 DEG C.
Preferably, material controlling fire grate 6 is provided with between pyrolysis zone 101 and gasification zone.The bed of material of pyrolysis zone 101 and oxidation zone is mainly separated by material controlling fire grate 6, and can by reacted for pyrolysis zone 101 defective material discharged to zone of oxidation 102.By automatically controlling the opening time of material controlling fire grate 6 in embodiment, ensure the residence time of the bed of material in pyrolysis zone 101.
The technique of embodiment, in step c, adopts mode separating bio gas and the bio oil of condensation after first dedusting to high tar pyrolysis gas and low tar gasification gas.
Concrete, pyrolysis gas outlet 3 and gasification gas outlet 4 are connected to pyrolysis gas fly-ash separator 13 and gasification gas fly-ash separator 14, two fly-ash separators respectively and are high-temperature cyclone dust extractor, for generating the dedusting ash of gas.The pneumatic outlet of pyrolysis gas fly-ash separator 13 and gasification gas fly-ash separator 14 is connected in condensing works, and the condensate outlet of condensing works connects biological oil tank 15.Condensing works, by high-temperature fuel gas condensation separation, generates the bio oil as phlegma and biogas, and bio oil introduces biological oil tank 15, and biogas is discharged condensing works and collected, and realizes the coproduction of bio oil and biogas.
Preferably, condensing works comprises primary condenser 16 and after-condenser 17, the entrance of the pneumatic outlet connecting secondary condenser 17 of primary condenser 16, the entrance of after-condenser 17 is connected on the pneumatic outlet of primary condenser 16 and the pneumatic outlet of gasification gas fly-ash separator 14 respectively, and the condensate outlet of primary condenser 16 and after-condenser 17 is all connected in biological oil tank 15.
As from the foregoing, high tar pyrolysis gas uses the technique of condensed in two stages, is separated, is not coagulated pyrolysis gas and one-level bio oil through first-stage condenser, and not solidifying pyrolysis gas enters secondary condenser, is separated and obtains biogas and two stage biological oil.And low tar gasification gas adopts the technique of one-level condensation, pass into secondary condenser, be separated and obtain biogas and two stage biological oil.Therefore the gasify one-level condensation of gas of the second stage condensation of high tar pyrolysis gas and low tar adopts same secondary condenser.
In order to ensure the effect of dedusting and condensation, two house outlet temperature keep more than 350 DEG C, and first-stage condenser temperature out is below 150 DEG C, and secondary condenser temperature out is below 50 DEG C.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent modification or replacement are all included in the application's claim limited range.
Claims (10)
1. a self-supplying heat biomass oil gas joint process, is characterized in that, comprise the following steps:
A. in Reaktionsofen, utilize biomass pyrolytic and gasifying biomass to prepare high tar pyrolysis gas and low tar gasification gas respectively;
B. high tar pyrolysis gas and low tar gasification gas is derived respectively;
C. high tar pyrolysis gas and low tar gasification gas therefrom isolate bio oil and biogas is purified.
2. self-supplying heat biomass oil gas joint process according to claim 1, it is characterized in that: in described step a, the solid product after biomass pyrolytic is as the raw material of gasifying biomass.
3. self-supplying heat biomass oil gas joint process according to claim 2, is characterized in that: generate the heat supply of high-temperature flue gas form biomass pyrolysis by the carbon residue after biomass burning gasification.
4. self-supplying heat biomass oil gas joint process according to claim 3, is characterized in that: high-temperature flue gas is transmitted by pipeline and biomass fermentation heat-dissipating.
5. self-supplying heat biomass oil gas joint process according to claim 4, is characterized in that: the temperature and the exhaust gas volumn that regulate high-temperature flue gas, controls the temperature of biomass pyrolytic at 450 ~ 600 DEG C.
6. the self-supplying heat biomass oil gas joint process according to Claims 2 or 3 or 4 or 5, it is characterized in that: air reaction is passed into the solid product after pyrolysis, make it form zone of oxidation and reducing zone from top to bottom, the low tar gasification gas in step b is derived by reducing zone.
7. the self-supplying heat biomass oil gas joint process according to Claims 2 or 3 or 4 or 5, it is characterized in that: separated by material controlling fire grate between the pyrolysis zone of biomass pyrolytic and the gasification zone of gasifying biomass, the start and stop of automatic control material controlling fire grate, ensure the residence time of biomass in pyrolysis zone.
8. self-supplying heat biomass oil gas joint process according to claim 1, is characterized in that: in described step c, high tar pyrolysis gas and low tar gasification gas is adopted to mode separating bio gas and the bio oil of condensation after first dedusting.
9. self-supplying heat biomass oil gas joint process according to claim 8, is characterized in that: high tar pyrolysis gas uses the technique of condensed in two stages, and low tar gasification gas adopts the technique of one-level condensation.
10. self-supplying heat biomass oil gas joint process according to claim 9, is characterized in that: the gasify one-level condensation of gas of the second stage condensation of high tar pyrolysis gas and low tar adopts same condenser.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104877690A (en) * | 2015-06-09 | 2015-09-02 | 湖州宜可欧环保科技有限公司 | Organic waste pyrolysis carbonization treatment method and device |
| CN105018155A (en) * | 2015-08-05 | 2015-11-04 | 华陆工程科技有限责任公司 | Method for producing coal tar and synthesis gas from oil-rich coal through pyrolysis and gasification coupling device and oil gas purification device |
| CN106867585A (en) * | 2017-04-19 | 2017-06-20 | 大连理工大学 | From detar formula organic solid apparatus for gasifying fuel and method in stove |
| CN113604253A (en) * | 2021-08-06 | 2021-11-05 | 合肥工业大学 | Poly-generation device for efficiently cleaning carbon and gas by biomass |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104877690A (en) * | 2015-06-09 | 2015-09-02 | 湖州宜可欧环保科技有限公司 | Organic waste pyrolysis carbonization treatment method and device |
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| CN106867585A (en) * | 2017-04-19 | 2017-06-20 | 大连理工大学 | From detar formula organic solid apparatus for gasifying fuel and method in stove |
| CN106867585B (en) * | 2017-04-19 | 2019-06-21 | 大连理工大学 | From detar formula organic solid apparatus for gasifying fuel and method in furnace |
| CN113604253A (en) * | 2021-08-06 | 2021-11-05 | 合肥工业大学 | Poly-generation device for efficiently cleaning carbon and gas by biomass |
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Application publication date: 20150506 |