CN115253357A - High-efficient condensation enrichment device - Google Patents
High-efficient condensation enrichment device Download PDFInfo
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- CN115253357A CN115253357A CN202210660269.7A CN202210660269A CN115253357A CN 115253357 A CN115253357 A CN 115253357A CN 202210660269 A CN202210660269 A CN 202210660269A CN 115253357 A CN115253357 A CN 115253357A
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- condensation
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- wall
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- 230000005494 condensation Effects 0.000 title claims abstract description 194
- 238000009833 condensation Methods 0.000 title claims abstract description 194
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000002245 particle Substances 0.000 claims abstract description 27
- 239000007787 solid Substances 0.000 claims abstract description 16
- 238000000197 pyrolysis Methods 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 description 9
- 241001233242 Lontra Species 0.000 description 8
- 239000002028 Biomass Substances 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000004964 aerogel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000002296 pyrolytic carbon Substances 0.000 description 1
- -1 sawdust Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
- 239000003039 volatile agent Substances 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0003—Condensation of vapours; Recovering volatile solvents by condensation by using heat-exchange surfaces for indirect contact between gases or vapours and the cooling medium
- B01D5/0012—Vertical tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0057—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0078—Condensation of vapours; Recovering volatile solvents by condensation characterised by auxiliary systems or arrangements
-
- 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
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a high-efficiency condensation enrichment device which is characterized by comprising a condensation shell and a condensation pipe; the condensation pipe is arranged in the condensation shell, condensed water is used for circulating in the condensation pipe, the condensation pipes are distributed in the condensation shell, and the air inlet of the condensation shell is communicated with the air outlet of the condensation shell through a gap between the condensation pipes and a gap between the condensation pipe and the inner wall of the condensation shell; particle structures are arranged on the surface of the condensing pipe and the inner wall of the condensing shell and used for capturing solid particles in gas, so that the solid particles are attached to the surface of the condensing pipe or the inner wall of the condensing shell to form a condensation core. In the process of the condensation of the volatile matter, the fixed particles in the volatile matter can be attached to the surface of the condensation pipe and the inner wall of the condensation shell, so that condensation nuclei are formed, the condensation of the volatile matter is facilitated, the condensation effect of the volatile matter is improved, and the yield of the pyrolysis oil is improved.
Description
Technical Field
The invention relates to the technical field of biomass pyrolysis, in particular to a high-efficiency condensation and enrichment device.
Background
The biomass thermal cracking technology is one of the leading-edge technologies for large-scale development and utilization of biomass energy at present. The technology can convert biomass such as sawdust, straws, leaves, tobacco stems and the like into pyrolytic carbon, pyrolytic gas and pyrolytic oil in a continuous process and an industrial production mode. The pyrolysis oil obtained by condensing the volatile matters in the pyrolysis process has the advantages of high energy density and easiness in storage and transportation, and is the only carbon-containing renewable liquid resource. However, currently the pyrolysis oil yields obtained by various routes fluctuate around 30% to 70%.
Therefore, how to improve the yield of pyrolysis oil is a critical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The object of the invention is to increase the pyrolysis oil yield. In order to realize the purpose, the invention provides the following technical scheme:
a high-efficiency condensation and enrichment device for biomass pyrolysis oil comprises a condensation shell and a condensation pipe; the condensation pipes are arranged in the condensation shell and used for circulating condensed water, the condensation pipes are distributed in the condensation shell, and an air inlet of the condensation shell is communicated with an air outlet of the condensation shell through a gap between the condensation pipes and the inner wall of the condensation shell;
particle structures are arranged on the surface of the condensation pipe and the inner wall of the condensation shell and used for capturing solid particles in gas, so that the solid particles are attached to the surface of the condensation pipe or the inner wall of the condensation shell to form condensation nuclei.
Preferably, the air inlet and the air outlet of the condensation housing are oppositely arranged, and the condensation duct is arranged along the direction from the air outlet to the air inlet.
Preferably, a condensation screen plate is arranged in the condensation shell, meshes on the condensation screen plate are used for gas to pass through, and the particle structure is arranged on the surface of the condensation screen plate.
Preferably, the condensation screen plate is matched with an inner cavity of the condensation shell, and the condensation pipe penetrates through the condensation screen plate.
Preferably, the number of the condensation screen plates is multiple, and the multiple condensation screen plates are arranged at intervals along the length direction of the condensation pipe.
Preferably, the direction from the air inlet to the air outlet of the condensation shell is opposite to the direction from the water inlet to the water outlet of the condensation pipe.
Preferably, the condensation housing is cylindrical, and the plurality of condensation pipes are arranged around a central axis of the condensation housing.
Preferably, the condensation duct includes a duct body and a fin provided on an outer wall of the duct body.
Preferably, the fin is a plurality of fins, and the plurality of fins are arranged around the tube body.
It can be seen from the above technical solution that: the efficient condensation enrichment device has the following beneficial effects:
first, the surface of condenser pipe and the inner wall of condensation casing are provided with granular structure to do benefit to the solid particle in the volatile to adhere to the surface of condenser pipe and the inner wall of condensation casing, thereby form and condense the core, do benefit to the volatile and condense.
Secondly, set up condensation otter board in the condensation casing, the surface of condensation otter board is provided with granular structure to further do benefit to solid particulate matter and adhere to and form the nucleus that condenses, thereby further do benefit to the volatile and condense.
Thirdly, the flowing directions of the condensed water and the volatile matters in the invention are opposite, and the heat exchange is realized by countercurrent flow, so that the heat exchange efficiency can be improved, and the condensation of the volatile matters is facilitated.
Fourthly, the fins are arranged on the tube body of the condensation tube, so that the heat exchange area is enlarged, heat exchange between volatile matters and condensed water is facilitated, and condensation of the volatile matters is facilitated.
Drawings
In order to more clearly illustrate the solution of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without inventive efforts.
FIG. 1 is a schematic view of an efficient condensing and enriching apparatus according to an embodiment of the present invention at a certain moment in operation;
fig. 2 is a schematic structural diagram of a condenser tube according to an embodiment of the present invention.
Wherein, 1 is the air inlet, 2 is the delivery port, 3 is condensation otter board, 4 is condensation casing, 5 is the condenser pipe, 6 is the water inlet, 7 is the gas outlet, 8 is the fin, 9 is the body.
Detailed Description
The invention discloses an efficient condensation and enrichment device which can improve the condensation effect of volatile matters, so that the yield of pyrolysis oil is improved.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The applicant found that: in the laboratory, the volatile matter formed by biomass pyrolysis is usually condensed in multiple stages using dry ice or liquid nitrogen. Because the condensation environment in the laboratory is extremely low and the condensation level is high, the yield of the collected pyrolysis oil is high. In view of cost, the industrial production mostly adopts a water cooling or air cooling mode to condense the volatile matters. But the condensing effect due to water cooling or air cooling is poor, so that the pyrolysis oil collection rate is low. Therefore, if the condensation effect of water cooling or air cooling can be significantly improved, the collection rate of pyrolysis oil is increased.
The applicant has also found that: during the condensation of the volatile components, if sufficient condensation nuclei are available, the condensation of the volatile components is facilitated; if condensation nuclei are absent, condensation of volatiles is affected. The volatile substances produced by pyrolysis of biomass usually contain solid particles, which form an aerogel with the gaseous substances, and thus do not contribute to the formation of condensation nuclei, which in turn affects the condensation of the gas. How does the aerogel break down, thereby causing the solid particles to form nuclei for condensation? Based on the problem, the applicant designs the high-efficiency condensation and enrichment device.
The high-efficiency condensation enrichment device comprises a condensation shell 4 and a condensation pipe 5. The condensation housing 4 has an air inlet 1 and an air outlet 7. The condensation duct 5 is provided in the condensation housing 4. The condenser pipe 5 is used for circulating condensed water, and the condenser pipe 5 is provided with a water inlet 6 and a water outlet 7. And the condensation duct 5 is plural, and the plural condensation ducts 5 are dispersedly arranged in the condensation housing 4. Since the condensation pipes 5 are arranged in a dispersed manner, a gap is formed between the condensation pipes 5 and the condensation pipes 5, and a gap is also formed between the condensation pipes 5 and the inner wall of the condensation housing 4. The air inlet 1 of the condensation housing 4 is communicated with the air outlet 7 of the condensation housing 4 through a gap between the condensation pipes 5 and the inner wall of the condensation housing 4. In particular, the present invention provides a granular structure on the surface of the condensation duct 5, while also providing a granular structure on the inner wall of the condensation shell 4. The grain structure forms a rough surface on the surface of the condensation duct 5 and the inner wall of the condensation housing 4. The particle structure can capture solid particles in the volatile matter, so that the solid particles are attached to the surface of the condensation pipe 5 or the inner wall of the condensation shell 4 to form condensation nuclei.
In the present invention, condensed water flows through the inside of the condensation duct 5, and volatile matter flows through the outside of the condensation duct 5. The cold energy of the condensed water is transferred to the volatile matter, so that the volatile matter is condensed. In the process that the volatile condenses, fixed granule in the volatile can be attached to 5 surfaces of condenser pipe and the inner wall of condensation casing 4 to form the core that condenses, so just do benefit to condensing of volatile, thereby improved the condensation effect that the volatile sent, also improved the productivity of pyrolysis oil so.
It should be noted that, compared with the case that the condensed water flows outside the condensation pipe 5 and the volatile matter flows inside the condensation pipe 5, in the present case, the condensed water flows inside the condensation pipe 5 and the volatile matter flows outside the condensation pipe 5, and the particle structure can be distributed on the surface of the condensation pipe 5 and the inner wall of the condensation shell 4, so as to form a sufficient capture surface, and to promote the solid particles in the volatile matter to be attached to the surface of the condensation pipe 5 and the inner wall of the condensation shell 4.
The air inlet 1 and the air outlet 7 of the condenser of the present invention are arranged oppositely, and the condensation duct 5 is arranged along the direction from the air outlet 7 to the air inlet 1. The condensed water in the condensing pipe 5 exchanges heat with the gas circulating in the condensing shell 4 in the flowing process, so that the condensation of volatile matters is facilitated.
Further, the flow direction of the condensed water is limited to be just opposite to the flow direction of the volatile matter, namely, a counter flow is formed. The air inlet 1 of the condensation shell 4 and the water outlet 2 of the condensation pipe 5 are arranged on one side, and the air outlet 7 of the condensation shell 4 and the water inlet 6 of the condensation pipe 5 are arranged on the other side. The countercurrent mode utilizes heat exchange between the condensed water and the volatile matter. Referring to fig. 1, fig. 1 is a schematic diagram of an efficient condensing and enriching apparatus according to an embodiment of the present invention at a certain moment in operation. As can be seen from fig. 1, the volatile matter flows from bottom to top, while the condensed water flows from top to bottom.
The following continues with the description of the particle structure and the condensation nuclei: in order to enlarge the catching surface, the invention is also provided with a condensation screen plate 3 in the condensation shell 4, and the surface of the condensation screen plate 3 is provided with a particle structure. The condensing screen 3 is provided with a mesh which allows volatile to pass through. Namely, the volatile matter enters the condensation shell from the air inlet 1 and then passes through the condensation screen 3 and then flows out from the air outlet 7. When the volatile passes through condensation otter board 3, the solid particle in the volatile can be caught by the particle structure on condensation otter board 3 surface, attaches to the surface of condensation otter board 3 and forms the condensation nucleus to further improve the condensation effect of volatile, improve pyrolysis oil yield.
The condensation screen 3 in the invention is matched with the inner cavity of the condensation shell 4 and covers the section of the condensation shell 4. This further expands the capture area. The condensation pipe 5 penetrates through the condensation screen plate 3.
Further, the number of the condensation screen plates 3 is provided in plurality, and the plurality of condensation screen plates 3 are arranged at intervals along the length direction of the condensation pipe 5. In this way, the capture area is increased, so that the fixed particles in the volatile component can be effectively captured, and the volatile component can be ensured to have a proper flow rate.
Regarding the structure and arrangement of the condensation duct 5 and the condensation housing 4: the condensing shell 4 is arranged in a cylindrical shape, so that the circulation of volatile matters is facilitated. The present invention arranges the plurality of condensation ducts 5 around the central axis of the condensation housing 4 in a circular manner, in consideration of the balance and stability of the apparatus.
In addition, in the prior art, the condensation pipe 5 is generally in a simple tubular shape, and has an extremely low temperature only at a position close to the condensation pipe 5, so that the condensation efficiency is low. The condenser tube 5 comprises a tube body 9 and fins 8, wherein the fins 8 are arranged on the outer wall of the tube body 9 to enlarge the condensation area and strengthen condensation heat exchange.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a condenser tube 5 according to an embodiment of the present invention. The fins 8 are thin sheets, and the fins 8 are as long as the tube body 9. The fin 8 is a plurality of, and a plurality of fins 8 are evenly arranged around body 9 to do benefit to body 9 and spread cold volume all around.
In summary, the efficient condensation and enrichment device provided by the invention has the following beneficial effects:
first, the surface of the condensation duct 5 and the inner wall of the condensation housing 4 are provided with a granular structure to facilitate the attachment of solid particles in the volatile matter to the surface of the condensation duct 5 and the inner wall of the condensation housing 4, thereby forming condensation nuclei and facilitating the condensation of the volatile matter.
Secondly, set up condensation otter board 3 in condensation casing 4, condensation otter board 3's surface is provided with granular structure to further do benefit to solid particle and adhere to and form the condensation nuclear, thereby further do benefit to the volatile and condense.
Thirdly, the flowing directions of the condensed water and the volatile matters in the invention are opposite, and the heat exchange is realized by countercurrent flow, so that the heat exchange efficiency can be improved, and the condensation of the volatile matters is facilitated.
Fourthly, the fins 8 are arranged on the tube body 9 of the condensation tube 5, so that the heat exchange area is enlarged, the heat exchange between volatile matters and condensed water is facilitated, and the condensation of the volatile matters is facilitated.
Finally, it should be further noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.
In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The high-efficiency condensation enrichment device is characterized by comprising a condensation shell and a condensation pipe; the condensation pipes are arranged in the condensation shell, condensed water is used for circulating in the condensation pipes, the condensation pipes are distributed in the condensation shell, and an air inlet of the condensation shell is communicated with an air outlet of the condensation shell through a gap between the condensation pipes and the inner wall of the condensation shell;
particle structures are arranged on the surface of the condensation pipe and the inner wall of the condensation shell and used for capturing solid particles in gas, so that the solid particles are attached to the surface of the condensation pipe or the inner wall of the condensation shell to form condensation nuclei.
2. The apparatus according to claim 1, wherein the gas inlet and the gas outlet of the condensing housing are oppositely disposed, and the condensing pipe is disposed along a direction from the gas outlet to the gas inlet.
3. The high-efficiency condensation and enrichment device according to claim 2, wherein a condensation screen plate is arranged in the condensation shell, meshes of the condensation screen plate are used for gas to pass through, and the particle structure is arranged on the surface of the condensation screen plate.
4. The apparatus according to claim 3, wherein the condensing screen is adapted to an inner cavity of the condensing shell, and the condensing pipe penetrates through the condensing screen.
5. The high-efficiency condensation and enrichment device according to claim 4, wherein the number of the condensation screen plates is multiple, and the multiple condensation screen plates are arranged at intervals along the length direction of the condensation pipe.
6. The apparatus according to claim 2, wherein the direction from the air inlet to the air outlet of the condensing shell is opposite to the direction from the water inlet to the water outlet of the condensing tube.
7. The apparatus according to claim 2, wherein the condensing housing is cylindrical, and the plurality of condensing tubes are arranged around a central axis of the condensing housing.
8. The apparatus of claim 1, wherein the condenser tube comprises a tube body and a fin disposed on an outer wall of the tube body.
9. The apparatus according to claim 8, wherein the fins are plural, and the plural fins are arranged around the tube body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210660269.7A CN115253357A (en) | 2022-06-13 | 2022-06-13 | High-efficient condensation enrichment device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210660269.7A CN115253357A (en) | 2022-06-13 | 2022-06-13 | High-efficient condensation enrichment device |
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| CN113117440A (en) * | 2019-12-31 | 2021-07-16 | 上海欧菲滤清器有限公司 | Gas-water separator |
| CN113082910A (en) * | 2021-04-14 | 2021-07-09 | 浙江大学医学院附属邵逸夫医院 | Method and device for catching and killing ultrafine biological particles in air |
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