CN112657322A - Condenser for integrated treatment of dehumidification and dust removal of household garbage pyrolysis flue gas - Google Patents

Condenser for integrated treatment of dehumidification and dust removal of household garbage pyrolysis flue gas Download PDF

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Publication number
CN112657322A
CN112657322A CN201910977628.XA CN201910977628A CN112657322A CN 112657322 A CN112657322 A CN 112657322A CN 201910977628 A CN201910977628 A CN 201910977628A CN 112657322 A CN112657322 A CN 112657322A
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China
Prior art keywords
condenser
flue gas
smoke
condenser body
dehumidification
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CN201910977628.XA
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Chinese (zh)
Inventor
马文超
王萍
李丹
陈冠益
钟磊
颜蓓蓓
程占军
林法伟
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Tianjin University
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Tianjin University
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Abstract

The invention discloses a condenser for integrated dehumidification and dust removal treatment of household garbage pyrolysis flue gas, which comprises a condenser body, wherein the lower part of the side wall of the condenser body is provided with a cooling water inlet, and the upper part of the side wall is provided with a cooling water outlet; the upper end of the condenser body is connected with a smoke exhaust cavity provided with a smoke outlet; the lower end of the condenser body is connected with a smoke collecting chamber provided with a smoke inlet; the lower end of the smoke collecting chamber is connected with a water collecting hopper provided with a drainage interface; the condenser is characterized in that a snake-shaped winding condenser pipe is arranged in the condenser body, a winding flow channel is formed in the condenser body by the snake-shaped winding condenser pipe, and cooling water enters the condenser body from a cooling water inlet and then passes through the winding flow channel, so that the outer wall of the snake-shaped winding condenser pipe and the inner wall of the condenser body are rapidly cooled. The invention can condense the water contained in the gas fume, has obvious dehumidification effect, and effectively prevents the gas fume dust from being directly discharged into the atmosphere, so that the gas fume reaches the standard and is reduced to be discharged.

Description

Condenser for integrated treatment of dehumidification and dust removal of household garbage pyrolysis flue gas
Technical Field
The invention relates to a flue gas and tail gas treatment technology, in particular to a condenser for integrated dehumidification and dust removal treatment of household garbage pyrolysis flue gas.
Background
The existing condensers are of various types, including three types, namely a water-cooling type condenser, an air-cooling type condenser and an evaporation type condenser, and are widely applied to equipment such as air conditioners, refrigerators, automobiles and the like. The condensing pipes in the condenser are all combined in rows by adopting multi-pole thin pipes, and each row of pipes are connected by adopting an elbow, so that gas enters the pipeline to bypass, and the condensing effect is ideal. The pyrolysis technology decomposes under the condition of no oxygen or lack of oxygen, has small exhaust amount, can especially avoid the formation of dioxin substances, and has wide application as a garbage treatment method with very wide prospect.
In order to meet the requirement of environmental protection, the domestic garbage is subjected to pyrolysis treatment, but high-temperature smoke is inevitably generated in the pyrolysis treatment process, contains a lot of harmful substances and cannot be directly discharged into the air, so that the smoke needs to be treated, and dust removal and dehumidification treatment are mostly carried out on the smoke by adopting a smoke treatment facility.
Patent CN102861758A discloses a low-temperature plasma purification device and method for household garbage pyrolysis flue gas, and streamer corona discharge low-temperature plasma is generated by a high-voltage direct-current narrow pulse power supply to oxidize harmful gaseous pollutants in the garbage pyrolysis flue gas into CO2、H2O and other harmless or low toxic substances; meanwhile, solid and liquid particles (such as carbon black, tar and the like) in the flue gas are charged through an electric field, are collected on the surface of the dust collecting plate under the action of the electric field force, and are scraped by a scraper driven by a deashing tool rest from top to bottom along a lead screwHowever, the oxidation and dust removal of the flue gas are influenced by plasma distance discharge, the effect is not very ideal, and secondary pollution is easily caused.
Patent CN 10169662 a discloses a flue gas discharge system of glass melting furnace, in the aspect of the waste heat utilization, flue gas discharge is less, this flue gas discharge system also adopts the condenser, but only ordinary condenser, the condenser pipe of condenser adopts multipolar tubule in bank formula combination, every calandria all adopts the elbow to connect, make gaseous entering pipeline detour, be unsuitable for the flue gas treatment of rubbish pyrolysis, pass through the elbow like the flue gas at multipolar tubule, gas power consumption, exceed normal scope, use for a long time in addition, the pipeline is because big, thin easy blocking, it influences whole flue gas flow and pyrolysis result to be difficult to wash.
The existing garbage pyrolysis flue gas treatment equipment generally comprises a cooling tower, an adsorption device, a bag type dust collector and the like, is redundant in structure on the application level of a laboratory and is difficult to operate. Secondly, the flue gas generated by garbage pyrolysis has short residence time in the reaction device, and high-heat-value components such as CO and CH3And He and the like do not fully generate oxidation reaction, so that the heat efficiency is low, the heat value is low, and the smoke contains a large amount of tar, so that the smoke treatment difficulty is increased, and the blockage and corrosion of the pipeline are easily caused.
In summary, considering that the experimental flue gas treatment equipment is convenient to operate, the idea of combining flue gas dehumidification and dust removal integrated treatment is applied to the improvement of the condenser. Most of the existing condensers are suitable for clean moisture-containing gas, the product structure precision is high, the manufacturing cost is high, the condenser is not suitable for treating flue gas generated by pyrolysis of garbage with complex components, the existing condensers are limited to flue gas cooling, and few condensers which integrate dehumidification and dust removal are adopted, so that fine dust impurities in the flue gas are not well treated, and further subsequent treatment facilities are blocked, and therefore the condenser for integrated treatment of dehumidification and dust removal of household garbage pyrolysis flue gas has important significance for environment improvement and equipment use and maintenance.
Disclosure of Invention
The pyrolysis technology decomposes under the condition of no oxygen or lack of oxygen, has small exhaust amount, can particularly avoid the formation of dioxin substances, and has wide application as a garbage treatment method with very wide prospect. However, when the domestic garbage is pyrolyzed, high-temperature flue gas is inevitably generated in the process, contains a lot of harmful substances and cannot be directly discharged into the air, so that the flue gas needs to be treated. Most of the existing equipment still is in the stage treatment level for dust removal and dehumidification of flue gas, and in addition, the existing condenser function is only limited to flue gas cooling, and the tiny dust impurities in the flue gas are not well treated, so that inconvenience is caused to subsequent flue gas treatment, and the effect of pyrolysis products is influenced.
In order to solve the problems, the invention provides the condenser for the integrated dehumidification and dust removal treatment of the pyrolysis flue gas of the household garbage, which can condense the aerial fog water contained in the flue gas, has obvious dehumidification effect, and effectively prevents the flue gas micro-dust from being directly discharged into the atmosphere, so that the flue gas reaches the standard and is reduced in emission.
The technical scheme adopted by the invention is as follows: a condenser for domestic waste pyrolysis flue gas dehumidification and dust removal integration is handled, includes:
the condenser comprises a condenser body, wherein a cooling water inlet is formed in the lower part of the side wall of the condenser body, and a cooling water outlet is formed in the upper part of the side wall of the condenser body;
the smoke exhaust cavity is connected to the upper end of the condenser body, and a smoke outlet is formed in the top of the smoke exhaust cavity;
the smoke collection chamber is connected to the lower end of the condenser body, and a smoke inlet is formed in the side wall of the smoke collection chamber;
the water collecting hopper is connected to the lower end of the smoke collecting chamber, and a drainage interface is arranged at the bottom of the water collecting hopper;
snakelike winding condenser pipe, snakelike winding condenser pipe is snakelike winding and arranges the inside of condenser body and the inside winding runner that forms of condenser body, the cooling water follows the cooling water import enters into this internal back of condenser the walk in the winding runner to cool off rapidly the outer wall of snakelike winding condenser pipe with the inner wall of condenser body realizes the cooling of flue gas and then reaches the dehumidification purpose with higher speed.
Furthermore, the smoke exhaust cavity is communicated with the condenser body through a smoke channel, and when smoke enters the smoke exhaust cavity, the smoke is given an initial diffusion speed through the smoke channel.
Wherein the diameter of the flue gas channel is 5.5 mm.
Furthermore, a plurality of exhaust holes are formed in the smoke exhaust cavity.
Furthermore, a closed outer frame is arranged outside the smoke exhaust cavity and connected with the outer wall of the condenser body.
Furthermore, a smoke adsorption layer is arranged at the joint of the smoke outlet and the smoke exhaust cavity, so that the discharge of micro-dust impurities is further prevented.
Furthermore, a filter membrane is arranged at the joint of the drainage interface and the water collecting hopper.
Wherein the filter membrane is a 0.45 mu m microporous filter membrane.
The invention has the beneficial effects that:
the invention integrates the dehumidification and dust removal of the flue gas, has good dehumidification effect due to the arrangement of the snake-shaped multistage pipe, and simultaneously leads most of particulate matters in the flue gas to be gathered on the outer wall of the smoke discharging cavity by virtue of the principle of the cyclone separator and a small amount of particulate matters to rise to the flue gas adsorption layer along with the flue gas, thereby leading the flue gas to reach the standard and be discharged in a reduction way; the dust particles mixed in the flue gas are effectively prevented from being discharged into the atmosphere, and the environment is protected; compared with other technologies, the structure is simple, the construction and operation cost is low, and the management and maintenance are easy.
Drawings
FIG. 1: the invention is a structural schematic diagram of a condenser;
FIG. 2: a perspective view of the condenser body of the present invention;
FIG. 3: a perspective view of the smoke evacuation chamber of the present invention;
the attached drawings are marked as follows: 1-a condenser body; 2-a smoke exhaust cavity; 3-a flue gas outlet; 4-a smoke collection chamber; 5-a flue gas inlet; 6-water collecting bucket; 7-a drainage interface; 8-cooling water inlet; 9-cooling water outlet; 10-a flue gas adsorption layer; 11-a flue gas channel; 12-a filter membrane; 13-winding the condensation pipe in a snake shape; 14-a vent hole; 15-seal the outer frame.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:
as shown in fig. 1, a condenser for domestic waste pyrolysis flue gas dehumidification and dust removal integration treatment comprises a condenser body 1, a cooling water inlet 8 is arranged on the lower portion of the side wall of the condenser body 1, a cooling water outlet 9 is arranged on the upper portion of the side wall, and the cooling water inlet 8 is connected with a circulating cooling device. The upper end of the condenser body 1 is connected with a smoke exhaust cavity 2, a smoke outlet 3 is arranged at the top of the smoke exhaust cavity 2, and a smoke adsorption layer 10 is arranged at the joint of the smoke outlet 3 and the smoke exhaust cavity 2, so that the discharge of micro-dust impurities is further prevented. The lower extreme of condenser body 1 is connected with collection smoke chamber 4, be provided with flue gas inlet 5 on the lateral wall of collection smoke chamber 4. The lower end of the smoke collecting chamber 4 is connected with a water collecting bucket 6, the bottom of the water collecting bucket 6 is provided with a drainage interface 7, the joint of the drainage interface 7 and the water collecting bucket 6 is provided with a filter membrane 12, and the filter membrane 12 is a 0.45-micrometer microporous filter membrane.
As shown in fig. 2, the inside of the condenser body 1 is provided with the snakelike winding condenser pipe 13, the snakelike winding condenser pipe 13 is arranged in a snakelike winding manner, a winding flow channel is formed inside the condenser body 1, cooling water enters from the cooling water inlet 8 into the condenser body 1, and then the snakelike winding condenser pipe 13 passes through the winding flow channel, so that the outer wall of the snakelike winding condenser pipe 13 and the inner wall of the condenser body 1 are rapidly cooled, and the cooling of flue gas is accelerated to achieve the dehumidification purpose.
The invention is arranged at the exhaust port of the pyrolysis flue gas treatment device, and flue gas is discharged to the smoke collection chamber 4, passes through the snakelike winding condensation pipe 13 from bottom to top and is subjected to heat and cold exchange with the inner wall of the condenser body 1. When the temperature of the flue gas is reduced to the instantaneous (dew point) of a saturated state, excessive water vapor is condensed out, the water flows downwards along the pipe wall of the snakelike winding condensation pipe 13 from top to bottom to the water collecting hopper 6 at the lower part, the water is permeated through a filter membrane 12(0.45 mu m microporous filter membrane) and then is discharged through the water discharging interface 7, the flue gas enters the smoke discharging cavity 2 and flows from the exhaust hole 14 of the smoke discharging cavity 2 to the flue gas outlet 3, then the flue gas further absorbs tiny particles through the flue gas absorbing layer 10 to be discharged to an exhaust port, tiny dust mixed in the flue gas is blocked in the smoke discharging cavity 2 and on the flue gas absorbing layer 10, and the pollution to the atmosphere is avoided.
As shown in fig. 3, in order to prevent the dust and impurities in the flue gas from being discharged into the atmosphere, the flue gas discharge cavity 2 is communicated with the condenser body 1 through a very narrow flue gas channel 11 by means of the principle of a cyclone separator, the diameter of the flue gas channel 11 is 5.5mm, and when the flue gas enters the flue gas discharge cavity 2, an initial diffusion speed is given to the flue gas through the very narrow flue gas channel 11. A plurality of exhaust holes 14 are arranged on the smoke exhaust cavity 2. And a closed outer frame 15 is arranged outside the smoke exhaust cavity 2, and the closed outer frame 15 is connected with the outer wall of the condenser body 1. After heat exchange, dry flue gas enters the smoke exhaust cavity 2 from the extremely narrow flue gas channel 11, reaches the flue gas outlet 3 after separation and adsorption processes, and is then concentrated to the exhaust port for exhaust, and micro dust mixed in the flue gas is blocked in the smoke exhaust cavity 2 and the flue gas adsorption layer 10, so that atmospheric pollution is avoided.
The invention can condense the water contained in the gas fume, has obvious dehumidification effect, and effectively prevents the gas fume dust from being directly discharged into the atmosphere, so that the gas fume reaches the standard and is reduced to be discharged.
Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and those skilled in the art can make many modifications without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims (8)

1. The utility model provides a condenser that is used for domestic waste pyrolysis flue gas dehumidification and dust removal integration to handle which characterized in that includes:
the condenser comprises a condenser body (1), wherein a cooling water inlet (8) is formed in the lower portion of the side wall of the condenser body (1), and a cooling water outlet (9) is formed in the upper portion of the side wall;
the smoke exhaust cavity (2) is connected to the upper end of the condenser body (1), and a smoke outlet (3) is formed in the top of the smoke exhaust cavity (2);
the smoke collection chamber (4) is connected to the lower end of the condenser body (1), and a smoke inlet (5) is formed in the side wall of the smoke collection chamber (4);
the water collecting bucket (6) is connected to the lower end of the smoke collecting chamber (4), and a drainage interface (7) is arranged at the bottom of the water collecting bucket (6);
snakelike winding condenser pipe (13), snakelike winding condenser pipe (13) are snakelike winding and arrange the inside of condenser body (1) and the inside winding runner that forms of condenser body (1), the cooling water is followed cooling water import (8) enter into back in condenser body (1) walk in the winding runner to cool off rapidly the outer wall of snakelike winding condenser pipe (13) with the inner wall of condenser body (1), the realization is accelerated the cooling of flue gas and then is reached the dehumidification purpose.
2. The condenser for integrated dehumidification and dust removal of flue gas generated by pyrolysis of household garbage according to claim 1, wherein the smoke exhaust cavity (2) is communicated with the condenser body (1) through a flue gas channel (11), and when the flue gas enters the smoke exhaust cavity (2), an initial diffusion speed is given to the flue gas through the flue gas channel (11).
3. The condenser for integrated dehumidification and dust removal of flue gas from pyrolysis of household garbage according to claim 2, wherein the diameter of the flue gas channel (11) is 5.5 mm.
4. The condenser for integrated dehumidification and dust removal of household garbage pyrolysis flue gas as recited in claim 1, wherein the smoke exhaust cavity (2) is provided with a plurality of exhaust holes (14).
5. The condenser for integrated dehumidification and dust removal of household garbage pyrolysis flue gas as claimed in claim 1, wherein a closed outer frame (15) is arranged outside the smoke exhaust cavity (2), and the closed outer frame (15) is connected with the outer wall of the condenser body (1).
6. The condenser for integrated dehumidification and dust removal of household garbage pyrolysis flue gas as claimed in claim 1, wherein a flue gas adsorption layer (10) is arranged at the joint of the flue gas outlet (3) and the smoke exhaust cavity (2) to further prevent the discharge of micro-dust impurities.
7. The condenser for integrated dehumidification and dust removal of household garbage pyrolysis flue gas as recited in claim 1, wherein a filter membrane (12) is disposed at the joint of the drainage interface (7) and the water collection bucket (6).
8. The condenser for integrated dehumidification and dust removal of flue gas from pyrolysis of household garbage according to claim 7, wherein said filter membrane (12) is a 0.45 μm microporous filter membrane.
CN201910977628.XA 2019-10-15 2019-10-15 Condenser for integrated treatment of dehumidification and dust removal of household garbage pyrolysis flue gas Pending CN112657322A (en)

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CN112657322A true CN112657322A (en) 2021-04-16

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5498153A (en) * 1994-07-25 1996-03-12 Jones; Wendyle Gas flare
CN202432526U (en) * 2011-11-28 2012-09-12 歙县绿源环保设备有限公司 Condenser for flue gas treatment
CN205156345U (en) * 2015-11-18 2016-04-13 杭州华源前线能源设备有限公司 Novel condenser
CN205925404U (en) * 2016-08-09 2017-02-08 国网山东省电力公司电力科学研究院 Efficiency of desulfurizing tower desulfurization is improved device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5498153A (en) * 1994-07-25 1996-03-12 Jones; Wendyle Gas flare
CN202432526U (en) * 2011-11-28 2012-09-12 歙县绿源环保设备有限公司 Condenser for flue gas treatment
CN205156345U (en) * 2015-11-18 2016-04-13 杭州华源前线能源设备有限公司 Novel condenser
CN205925404U (en) * 2016-08-09 2017-02-08 国网山东省电力公司电力科学研究院 Efficiency of desulfurizing tower desulfurization is improved device

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