CN102212376B - Laminar flow condenser for thermal decomposition and liquidation of biomass - Google Patents
Laminar flow condenser for thermal decomposition and liquidation of biomass Download PDFInfo
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- CN102212376B CN102212376B CN2011100968254A CN201110096825A CN102212376B CN 102212376 B CN102212376 B CN 102212376B CN 2011100968254 A CN2011100968254 A CN 2011100968254A CN 201110096825 A CN201110096825 A CN 201110096825A CN 102212376 B CN102212376 B CN 102212376B
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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Abstract
The invention provides a laminar flow condenser for thermal decomposition and liquidation of biomass. The laminar flow condenser comprises a horizontal cylinder, wherein the cross section of the horizontal cylinder is rectangular; a pyrolytic gas inlet is arranged at one end of the cylinder, and a pyrolytic gas outlet is arranged at the other end of the cylinder; a biological oil inlet is arranged on the top of the cylinder; and a biological oil outlet is arranged at the bottom of the cylinder. The laminar flow condenser is characterized in that a plurality of condensing plates, which are parallel to each other, are arranged inside the cylinder along the pyrolytic gas flowing direction; an overflow tank is arranged on the top end of each condensing plate; side walls of the overflow tank are symmetrical relative to the condensing plate; a horizontal distributing pipe is arranged on the top end of the cylinder and is communicated with the biological oil inlet; the distributing pipe is provided with a branched pipe corresponding to each overflow tank; a bottom outlet of the branched pipe is inserted into the overflow tank; and a silk screen is arranged inside the cylinder at the pyrolytic gas outlet. According to the laminar flow condenser, hot gas is in laminar conditions and flows through a liquid flow membrane; due to the low flow velocity, the thin airflow layers and the large temperature gradient, the heat exchange efficiency is high; carbon ash and coke tar carried in the pyrolytic gas flow out from the condensing plates along with the liquid flow and are not easy to condense; the laminar flow condenser has the advantages of simple structure and convenience for disassembly and assembly; and the condensing plates are easy to clean and have excellent working performance.
Description
Technical field
The invention provides a kind of laminar flow condenser for biomass pyrolysis, belong to field of renewable energy technology.
Background technology
One of type of cooling of biomass flash pyrolysis liquefaction process using is that low-temperature biological oil is directly mixed the cold shock pyrolysis gas with high temperature pyrolysis gas, makes condensable gases condensation in the pyrolysis gas, thereby obtains bio oil.Bio oil flows in the storage tanker, and other can not be discharged from condensing works by liquefied gas.This processing requirement enters high temperature pyrolysis gas and the direct mixed heat transfer of low-temperature biological oil of condensing works, high temperature pyrolysis gas is cooled to rapidly below 60 ℃, liquefiable gas in the pyrolysis gas becomes liquid and flows in the oil tank, other can not liquefied gas by induced draft fan sucking-off condensing works.
At present, in the biomass pyrolysis liquefaction technical field, adopt the directly research institution of mixed heat transfer technology of pyrolysis gas and low-temperature biological oil, the condenser of generally selecting is water cooling tower or cooling sieve-tray tower, as obtain the China Science ﹠ Technology University of outstanding achievement at the biomass pyrolysis liquefaction technical elements, the correlative study mechanism such as Shandong Technology Univ and Northeast Forestry University all adopts this kind method, defective is water cooling tower or cooling sieve-tray tower at right angle setting, floor space is large, coolant rate is large, the charcoal ash that carries in the pyrolysis gas easily condenses in the cooling tower, and the tar that produces in the pyrolysis gas process of cooling and charcoal ash bonding are not easy to remove.The biomass feeding rate that Spain Union Fenosa Utilities Electric Co. set up in 1993 is that the feeding rate that the biomass technology group (BTG) of the thermo-cracking demonstration plant of 200kg/h and Dutch Twente university developed in 2000 is the modified version rotating cone reactor pyrolysis liquefaction technique of 200kg/h, the cooling technology that adopts is the pipe shell type heat exchange water cooler, defective is that the pipe shell type heat exchange water cooler is in cooling heat is vented one's spleen process, the charcoal ash that carries in the pyrolysis gas condenses with the tar that the pyrolysis gas cooling produces, and pipeline stops up very soon.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can overcome defects, fast cooling, laminar flow condenser for biomass pyrolysis that heat exchange efficiency is high.Its technical scheme is:
A kind of laminar flow condenser for biomass pyrolysis, comprise the horizontal cylinder that cross section is rectangular, one end of cylindrical shell is the pyrolysis gas entrance, the other end is pyrolysis gas outlet, the top of cylindrical shell is provided with the bio oil entrance, the bottom is provided with the bio oil outlet, it is characterized in that: be provided with a plurality of cold plates parallel to each other along the pyrolysis gas flow direction in the cylindrical shell, an overflow groove is all established on the top of each cold plate, the sidewall of overflow groove is symmetrical with cold plate, and cylinder top arranges a horizontal distribution pipe and is communicated with the bio oil entrance, and distribution pipe is all established an arm corresponding to each overflow groove, the outlet at bottom of arm inserts in the overflow groove, and the inherent pyrolysis gas outlet of cylindrical shell is provided with silk screen.
Described laminar flow condenser for biomass pyrolysis, a plurality of cold plate spacings parallel to each other are equal, and crossbeam successively level passes each cold plate and is fixedly connected with each cold plate.
Described laminar flow condenser for biomass pyrolysis, overflow groove is identical with cold plate length, and the bottom of overflow groove is fixedly mounted on the top of cold plate.
Its principle of work is:
A plurality of cold plates parallel to each other are arranged in the cylindrical shell evenly and at intervals along the pyrolysis gas flow direction, make the pyrolysis air-flow that enters cylindrical shell, are in the flow through both sides of cold plate of laminar flow regime; Bio oil flows into the overflow groove on the top of each cold plate through distribution pipe and a plurality of arm, the full artifact oil spill of overflow groove goes out, flow downward along cold plate, form uniform and stable liquid stream film at the cold plate face, pyrolysis gas and the liquid stream film on the liquid of flowing through like this stream film surface are finished heat exchange, thereby the pyrolysis gas temperature is sharply reduced, liquefiable gas cold in the pyrolysis gas bio oil of congealing into, flow to current downflow with liquid, flow out from biological oil export, residual heat is vented one's spleen after the silk screen demist, is discharged by pyrolysis gas outlet.
The present invention compared with prior art, its advantage is:
1, hot gas is the laminar flow regime liquid stream film of flowing through, because flow velocity is low, airflow layer is thin, thermograde is large, thereby heat exchange efficiency is high, and the charcoal ash that carries in the pyrolysis gas flows out from cold plate with liquid stream with tar, is not easy to condense.
2, simple in structure, there is not drive disk assembly, easy accessibility, cold plate clean easily.
3, silk screen is arranged on pyrolysis gas outlet and plays the demist effect, can remove in the pyrolysis gas that is discharged from the liquefaction oil droplet that can not condensation portion carries.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is A-A sectional view embodiment illustrated in fig. 1.
Among the figure: 1, cylindrical shell 2, pyrolysis gas entrance 3, pyrolysis gas outlet 4, bio oil outlet 5, cold plate 6, overflow groove 7, distribution pipe 8, bio oil entrance 9, arm 10, silk screen 11, crossbeam 12, support
Embodiment
In the embodiment shown in Fig. 1-2: cylindrical shell 1 level is installed on the support 12, the cross section of cylindrical shell 1 is rectangular, one end is pyrolysis gas entrance 2, the other end is pyrolysis gas outlet 3, the top of cylindrical shell 1 is provided with bio oil entrance 8, the bottom is provided with bio oil outlet 4, cylindrical shell 1 is interior to be provided with a plurality of parallel to each other and cold plates 5 that spacing equates along the pyrolysis gas flow direction, crossbeam 11 successively level passes each cold plate 5, and be fixedly connected with each cold plate 5, cold plate 5 is fixedly mounted in the cylindrical shell 1, an overflow groove 6 is all established on the top of each cold plate 5, overflow groove 6 is identical with cold plate 5 length, the bottom of overflow groove 6 is fixedly mounted on the top of cold plate 5, the sidewall of overflow groove 6 is with cold plate 5 symmetries, cylindrical shell 1 top arranges a horizontal distribution pipe 7 and is communicated with bio oil entrance 8, and distribution pipe 7 is all established an arm 9 corresponding to each overflow groove 6, and the outlet at bottom of arm 9 inserts in the overflow groove 6, bio oil is assigned in each overflow groove 6, and cylindrical shell 1 inherent pyrolysis gas outlet 3 places are provided with silk screen 10.
Claims (3)
1. laminar flow condenser for biomass pyrolysis, comprise the rectangular horizontal cylinder of cross section (1), one end of cylindrical shell (1) is pyrolysis gas entrance (2), the other end is pyrolysis gas outlet (3), the bottom of cylindrical shell (1) is provided with bio oil outlet (4), it is characterized in that: be provided with a plurality of cold plates parallel to each other (5) along the pyrolysis gas flow direction in the cylindrical shell (1), an overflow groove (6) is all established on the top of each cold plate (5), the sidewall of overflow groove (6) is with cold plate (5) symmetry, cylindrical shell (1) top arranges a horizontal distribution pipe (7) and is communicated with bio oil entrance (8), distribution pipe (7) is all established an arm (9) corresponding to each overflow groove (6), the outlet at bottom of arm (9) inserts in the overflow groove (6), and the inherent pyrolysis gas outlet of cylindrical shell (1) (3) locates to be provided with silk screen (10).
2. laminar flow condenser for biomass pyrolysis as claimed in claim 1, it is characterized in that: a plurality of cold plates parallel to each other (5) spacing is equal, and crossbeam (11) successively level passes each cold plate (5) and is fixedly connected with each cold plate (5).
3. laminar flow condenser for biomass pyrolysis as claimed in claim 1, it is characterized in that: overflow groove (6) is identical with cold plate (5) length, and the bottom of overflow groove (6) is fixedly mounted on the top of cold plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100968254A CN102212376B (en) | 2011-04-19 | 2011-04-19 | Laminar flow condenser for thermal decomposition and liquidation of biomass |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100968254A CN102212376B (en) | 2011-04-19 | 2011-04-19 | Laminar flow condenser for thermal decomposition and liquidation of biomass |
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| CN102212376A CN102212376A (en) | 2011-10-12 |
| CN102212376B true CN102212376B (en) | 2013-04-10 |
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Citations (6)
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| US4614229A (en) * | 1983-06-20 | 1986-09-30 | Exxon Research & Engineering Co. | Method and apparatus for efficient recovery of heat from hot gases that tend to foul heat exchanger tubes |
| CN1030928A (en) * | 1987-06-30 | 1989-02-08 | 布朗波维里公司 | Plant for pyrolysis of waste material |
| CN101162127A (en) * | 2007-11-14 | 2008-04-16 | 中国科学技术大学 | Spraying and falling film compound condensation apparatus for coal or biomass pyrolytic liquefaction |
| CN101218323A (en) * | 2005-07-08 | 2008-07-09 | 埃克森美孚化学专利公司 | Method for processing hydrocarbon pyrolysis effluent |
| CN101802137A (en) * | 2007-10-02 | 2010-08-11 | 埃克森美孚化学专利公司 | Method and apparatus for cooling pyrolysis effluent |
| CN202054792U (en) * | 2011-04-19 | 2011-11-30 | 山东理工大学 | Laminar flow condenser for biomass pyrolysis |
-
2011
- 2011-04-19 CN CN2011100968254A patent/CN102212376B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4614229A (en) * | 1983-06-20 | 1986-09-30 | Exxon Research & Engineering Co. | Method and apparatus for efficient recovery of heat from hot gases that tend to foul heat exchanger tubes |
| CN1030928A (en) * | 1987-06-30 | 1989-02-08 | 布朗波维里公司 | Plant for pyrolysis of waste material |
| CN101218323A (en) * | 2005-07-08 | 2008-07-09 | 埃克森美孚化学专利公司 | Method for processing hydrocarbon pyrolysis effluent |
| CN101802137A (en) * | 2007-10-02 | 2010-08-11 | 埃克森美孚化学专利公司 | Method and apparatus for cooling pyrolysis effluent |
| CN101162127A (en) * | 2007-11-14 | 2008-04-16 | 中国科学技术大学 | Spraying and falling film compound condensation apparatus for coal or biomass pyrolytic liquefaction |
| CN202054792U (en) * | 2011-04-19 | 2011-11-30 | 山东理工大学 | Laminar flow condenser for biomass pyrolysis |
Non-Patent Citations (2)
| Title |
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| ZRS200型锥式生物质闪蒸热解装置液化冷凝技术的研究;李滨等;《林业机械与木工设备》;20061231;第34卷(第1期);16-18页 * |
| 李滨等.ZRS200型锥式生物质闪蒸热解装置液化冷凝技术的研究.《林业机械与木工设备》.2006,第34卷(第1期),16-18. |
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