CN117046250A - Centrifugal dust-removing type waste gas treatment method - Google Patents
Centrifugal dust-removing type waste gas treatment method Download PDFInfo
- Publication number
- CN117046250A CN117046250A CN202311314022.0A CN202311314022A CN117046250A CN 117046250 A CN117046250 A CN 117046250A CN 202311314022 A CN202311314022 A CN 202311314022A CN 117046250 A CN117046250 A CN 117046250A
- Authority
- CN
- China
- Prior art keywords
- dust
- waste gas
- separation chamber
- centrifugal
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002912 waste gas Substances 0.000 title claims abstract description 98
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000000428 dust Substances 0.000 claims abstract description 183
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 86
- 238000000926 separation method Methods 0.000 claims abstract description 82
- 239000010865 sewage Substances 0.000 claims abstract description 40
- 239000002245 particle Substances 0.000 claims abstract description 37
- 238000001471 micro-filtration Methods 0.000 claims abstract description 24
- 238000009991 scouring Methods 0.000 claims abstract description 5
- 239000002893 slag Substances 0.000 claims description 33
- 238000007599 discharging Methods 0.000 claims description 12
- 238000011010 flushing procedure Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 239000008213 purified water Substances 0.000 claims description 9
- 239000002699 waste material Substances 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000007921 spray Substances 0.000 description 21
- 239000002351 wastewater Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/40—Combinations of devices covered by groups B01D45/00 and B01D47/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
- B01D33/11—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for outward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—Regenerating the filter material in the filter
- B01D33/48—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D33/50—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Of Particles Using Liquids (AREA)
Abstract
The invention relates to a centrifugal dust-removing waste gas treatment method, which comprises the steps that after high-pressure and humidification treatment, dust in high-pressure dust-containing waste gas is humidified and aggravated to be condensed into large-particle dust, after passive centrifugal treatment, the large-particle dust aggravated by humidification is separated into large-particle dust which can be thrown out and separated, and water flow scouring is carried out during the passive centrifugal treatment, so that the large-particle dust is further humidified and aggravated, is thrown out from the waste gas more easily, and the dust removing effect of the waste gas is improved; the power of passive centrifugal treatment comes from the pressure after the waste gas pressure boost, does not have the power supply by itself, simplifies equipment greatly, reduces processing cost, and dust-containing sewage after the separation forms dust-free clean water through the microfiltration treatment simultaneously, recycles dust-free clean water, has better environmental protection effect, and the filter residue water content that separates after the microfiltration is low moreover, and subsequent processing is easier, also further reduces the processing cost of original dust-containing sewage.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to a centrifugal dust removal type waste gas treatment method.
Background
In the production operation of some enterprises, because various working procedures such as sawing, milling, planing, grinding and the like exist in the operation process, a large amount of dust with different sizes can be contained in the generated waste gas according to the operation content, and the waste gas can be discharged after the waste gas is subjected to dust removal and purification. Dust purification is mainly realized by a dust remover, and common dust removing modes include pulse bag type dust removal, spray dust removal and the like. Spray the dust removal and mainly remove dust through the spray column, send waste gas into the spray column, spray waste gas to adopting the multistage shower nozzle, make the dust humidification in the waste gas weight condensation become the macroparticles, fall to the spray column bottom naturally, and the waste gas after the dust removal is discharged through the gas vent at spray column top.
However, in the process of spraying and dedusting the waste gas, dust and sprayed water curtain are mixed, so that the separation effect is poor, the dust with smaller particles can be mixed in the waste gas and discharged along with the waste gas, and in order to improve the dedusting effect, a more complex method and equipment are required for further treating the waste gas, and the treatment cost is very high.
Disclosure of Invention
The invention aims to solve the problem of providing a centrifugal dust-removing waste gas treatment method which can more effectively remove dust from waste gas containing dust, improves the dust removal effect of the waste gas, has low treatment cost and has good environmental protection benefit. The technical scheme adopted is as follows:
the centrifugal dust-removing waste gas treatment method is characterized by comprising the following steps of:
(1) The dust-containing waste gas is subjected to supercharging treatment, so that the dust-containing waste gas is changed into high-pressure dust-containing waste gas;
(2) Humidifying the high-pressure dust-containing waste gas to humidify and aggravate dust in the high-pressure dust-containing waste gas to agglomerate into large-particle dust;
(3) Carrying out passive centrifugal treatment on the humidified high-pressure dust-containing waste gas, and flushing by adopting water flow at the same time, so that the humidified high-pressure dust-containing waste gas is separated into dust-containing sewage and clean air, the clean air is discharged outwards, and the dust-containing sewage is collected;
(4) And (3) carrying out microfiltration treatment on the collected dust-containing sewage to form cleaner dust-free clean water, wherein the dust-free clean water is used as a water source for the humidification treatment in the step (2) and the water flow flushing in the step (3).
Dust humidification in the high-pressure dust-containing waste gas aggravates and condenses into large-particle dust after the dust-containing waste gas is subjected to high-pressure humidification treatment, and after passive centrifugal treatment, the large-particle dust aggravated by humidification is separated into large-particle dust which can be thrown out and separated, and water flow flushing is carried out during the passive centrifugal treatment, so that the large-particle dust is further humidified and aggravated, and is easier to throw out from the waste gas. The power of passive centrifugal treatment comes from the pressure of the pressurized waste gas, and the passive centrifugal treatment has no power source, so that the equipment is greatly simplified, and the treatment cost is reduced.
On the other hand, dust-containing sewage after the separation forms dust-free clean water through the microfiltration treatment, and the dust-free clean water is recycled, so that the dust-free sewage has a better environment-friendly effect, the water content of filter residues separated after the microfiltration is low, the subsequent treatment is easier, and the treatment cost of the original dust-containing sewage is further reduced.
The dust-containing waste gas is pressurized by a high-pressure air pump.
In the step (2), the high-pressure dust-containing waste gas is conveyed by adopting an air inlet pipeline, and the high-pressure dust-containing waste gas is humidified by adopting a spraying mode in the air inlet pipeline. The spraying mode can be that a spraying pipe is arranged in an air inlet pipeline, the spraying pipe is externally connected with a water source, dust-free clean water is obtained through treatment in the step (4), and the recycling of water resources is improved.
In the step (3), the high-pressure dust-containing waste gas after humidification is subjected to passive centrifugal treatment by adopting a passive centrifugal device, the passive centrifugal device can enable the high-pressure dust-containing waste gas entering the inner cavity of the passive centrifugal device to form spiral airflow and throw dust in the high-pressure dust-containing waste gas to the inner wall of the passive centrifugal device, and meanwhile, annular water flow is arranged at the top end of the inner part of the passive centrifugal device to wash the inner wall of the passive centrifugal device.
When centrifugal dedusting is carried out, the dust particles which are subjected to humidification and aggravated are separated from waste gas under the action of centrifugal force and are thrown onto the inner wall of the passive centrifugal device, and part of dust particles are attached to the side wall of the upper separation chamber, so that the inner wall of the passive centrifugal device is flushed by annular water flow arranged at the top end of the inner part of the passive centrifugal device, dust accumulation on the inner wall of the passive centrifugal device is avoided, the passive centrifugal device does not need to be disassembled and washed regularly, and more importantly, when the dust is thrown onto the inner wall of the passive centrifugal device under the action of centrifugal force, the annular water flow carries out secondary agglomeration on the dust, and the dust flying in the passive centrifugal device is greatly reduced. The flushing water can be externally connected with a water source and processed in the step (4) to obtain dust-free clean water, so that the recycling of water resources is improved.
As a further preferable scheme of the invention, the passive centrifugal device comprises a centrifugal tower, an exhaust pipe and a slag discharging pipe; the centrifugal tower is internally provided with a cylindrical upper separation chamber and a funnel-shaped lower separation chamber, an upper end opening of the lower separation chamber is connected with the upper separation chamber, an exhaust pipe is arranged in the upper separation chamber and is coaxially arranged with the upper separation chamber, an upper end exhaust port of the exhaust pipe is exposed out of the upper separation chamber from the top of the upper separation chamber, the lower end of the exhaust pipe is positioned at the joint of the upper separation chamber and the lower separation chamber, high-pressure dust-containing waste gas enters the upper separation chamber, a downward spiral airflow is formed between the inner wall of the upper separation chamber and the outer wall of the exhaust pipe, the spiral airflow separates the high-pressure dust-containing waste gas into dust-containing sewage and clean air in the step (3), the dust-containing sewage falls into the bottom of the lower separation chamber, a slag discharge port is arranged at the bottom of the lower separation chamber, a water inlet of the slag discharge pipe is connected with the slag discharge port, and the dust-containing sewage is discharged through the slag discharge pipe; after the clean air downwards reaches the lower separation chamber, the clean air is repeatedly rebounded by the side wall of the lower separation chamber to form upward clean spiral air flow with smaller radius, and finally is discharged through the exhaust pipe.
After the humidified high-pressure dust-containing waste gas collides with the inner wall of the upper separation chamber, downward spiral air flow is formed between the inner wall of the upper separation chamber and the outer wall of the air outlet pipe, centrifugal force with certain strength is generated, dust particles weighted through humidification are thrown to the side wall of the upper separation chamber, and finally the dust particles fall into the lower separation chamber along the side wall of the upper separation chamber. When the spiral air flow downwards reaches the lower separation chamber, the spiral air flow is bounced by the side wall of the lower separation chamber, clean air collides with the side wall of the lower separation chamber to change the direction, and the upward spiral air flow is formed after multiple changes; the lower separating chamber is funnel-shaped, namely the radius of the cross section of the lower separating chamber is reduced downwards, the side wall of the lower separating chamber is an arc surface inclined from top to bottom, the separated clean air forms upward spiral air flow which is influenced by the side wall of the lower separating chamber, the radius of the air flow ring is smaller and is concentrated near the axis of the lower separating chamber, and when the dry spiral air flow reaches the joint of the upper separating chamber and the lower separating chamber, the dry spiral air flow enters the middle exhaust pipe and is finally discharged through the air outlet pipe.
As a still further preferable scheme of the invention, in the step (3), dust-containing sewage is collected through a waste liquid collecting tank, a water outlet of a slag discharging pipe is positioned above the waste liquid collecting tank, and the height of the water outlet of the slag discharging pipe is larger than that of the water inlet of the slag discharging pipe. The height of the water outlet of the slag discharging pipe is larger than that of the water inlet, a communicating vessel is formed between the bottom of the lower separation chamber and the slag discharging pipe, dust-containing sewage is accumulated in the slag discharging pipe, waste gas can rebound upwards when being blown downwards to the surface of accumulated water in a spiral manner, positive and negative double-spiral airflow is further formed at the lower part of the lower separation chamber, and meanwhile the waste gas can be prevented from being blown out of the slag discharging pipe to the outside of the centrifugal tower.
As a further preferable mode of the invention, in the step (2), an air outlet of the air inlet pipeline is communicated with an air inlet of the passive centrifugal device; the air inlet pipeline is arranged in a downward inclined mode, and the horizontal extending direction of the air inlet pipeline is tangential to the outer circumference of the spiral airflow in the passive centrifugal device. The air inlet pipeline is arranged in a downward inclined way, so that waste gas enters the separation chamber through the air inlet pipeline obliquely downwards along the circumferential tangential direction of the separation chamber. Because the high-pressure dust-containing waste gas is humidified in the step (2), dust in the high-pressure dust-containing waste gas is humidified, aggravated and condensed into large-particle dust, the large-particle dust can fall on the bottom surface of the air inlet pipeline, and naturally falls into the passive centrifugal device under the pushing of high pressure.
As a further preferable scheme of the invention, the collected dust-containing sewage in the step (4) is subjected to microfiltration treatment through a microfiltration machine to form cleaner dust-free clean water, and the clean water is conveyed to the air inlet pipeline and the passive centrifugal device through a circulating pump after being collected and used as a water source for humidification treatment in the step (2) and water flow flushing in the step (3).
As a still further preferable scheme of the invention, the micro-filter is provided with a dust collecting pull groove which can be extended into the filter cylinder from outside of the machine, dust-containing sewage enters a filter cavity of the micro-filter for micro-filtration, the filter cylinder of the micro-filter is sprayed and washed from the upper part of the filter cylinder in the rolling process, dust particles filtered and attached to the filter cylinder are sprayed into the dust collecting pull groove, high-concentration dust-containing sewage is collected in the dust collecting pull groove, and dust-free purified water obtained by micro-filtration is discharged from the bottom of the filter cavity. The filter cylinder is sprayed and washed in the microfiltration process, dust particles fall into the dust collection pull tank to form high-concentration dust-containing wastewater, so that the treatment efficiency of the dust-containing wastewater is improved, the separated high-concentration dust-containing wastewater is more convenient to treat subsequently, and the treatment cost is further reduced; and the separated clean water is reused for humidification in the step (2) and flushing in the step (3).
Compared with the prior art, the invention has the following advantages:
according to the centrifugal dust-removing waste gas treatment method, dust in high-pressure dust-containing waste gas is humidified, aggravated and condensed into large-particle dust after high-pressure and humidifying treatment, the large-particle dust subjected to the humidification aggravation is separated into large-particle dust which can be thrown out and separated after passive centrifugal treatment, and water flow scouring is carried out during the passive centrifugal treatment, so that the large-particle dust is further humidified and aggravated, is thrown out from the waste gas more easily, and the dust removing effect of the waste gas is improved; the power of passive centrifugal treatment comes from the pressure after the waste gas pressure boost, does not have the power supply by itself, simplifies equipment greatly, reduces processing cost, and dust-containing sewage after the separation forms dust-free clean water through the microfiltration treatment simultaneously, recycles dust-free clean water, has better environmental protection effect, and the filter residue water content that separates after the microfiltration is low moreover, and subsequent processing is easier, also further reduces the processing cost of original dust-containing sewage.
Drawings
FIG. 1 is a schematic view of the construction of an apparatus used in a preferred embodiment of the present invention;
FIG. 2 is an internal cross-sectional view of the micro-filter of FIG. 1;
wherein each of the marks is as follows: the device comprises a 1-air inlet pipeline, a 2-air inlet spray pipe, a 3-passive centrifugal device, a 4-annular spray pipe, a 5-waste liquid collecting tank, a 6-micro filter, a 7-water collecting tank and an 8-circulating pump; 31-a centrifugal tower, 31-an upper separation chamber, 31B-a lower separation chamber, 32-an exhaust pipe and 33-a slag discharge pipe; 601-filter cartridge, 602-dust collection pull tank, 603-filter cartridge spray pipe.
Detailed Description
A centrifugal dust-removing type waste gas treatment method specifically comprises the following steps:
(1) The dust-containing waste gas is subjected to supercharging treatment by adopting a high-pressure air pump, so that the dust-containing waste gas is changed into high-pressure dust-containing waste gas;
(2) The high-pressure dust-containing waste gas is conveyed by adopting an air inlet pipeline 1, and the high-pressure dust-containing waste gas is sprayed and humidified in a spraying mode in the air inlet pipeline 1, so that dust humidification in the high-pressure dust-containing waste gas is aggravated and condensed into large-particle dust;
(3) The method comprises the steps that a passive centrifugal device 3 is adopted to carry out passive centrifugal treatment on humidified high-pressure dust-containing waste gas, the passive centrifugal device 3 can enable the high-pressure dust-containing waste gas entering an inner cavity of the passive centrifugal device to form spiral airflow and throw dust in the high-pressure dust-containing waste gas to the inner wall of the passive centrifugal device 3, and meanwhile annular water flow is arranged at the top end of the inner part of the passive centrifugal device 3 to wash, so that the humidified high-pressure dust-containing waste gas is separated into dust-containing sewage and clean air, the clean air is discharged outwards, and the dust-containing sewage is collected;
(4) Carrying out microfiltration treatment on the collected dust-containing sewage through a microfiltration machine 6 to form cleaner dust-free clean water; after the dust-free purified water is collected, the dust-free purified water is conveyed to the air inlet pipeline 1 and the passive centrifugal device 3 through the circulating pump 8, and the dust-free purified water is used as a water source for the humidification treatment in the step (2) and the water flow scouring in the step (3).
The embodiment also provides the specific structure of each device and the connection mode between the devices based on the centrifugal dust-removing type waste gas treatment method. As shown in fig. 1, the device used in the centrifugal dust-removing type waste gas treatment method of the invention comprises a high-pressure air pump (not shown in the figure), an air inlet pipeline 1, an air inlet spray pipe 2, a passive centrifugal device 3, an annular spray pipe 4, a waste liquid collecting tank 5, a micro-filter 6, a water collecting tank 7 and a circulating pump 8; the air inlet pipeline 1 is arranged obliquely downwards, the air inlet of the air outlet passive centrifugal device 3 of the air inlet pipeline 1 is communicated, and the horizontal extending direction of the air inlet pipeline 1 is tangential to the peripheral direction of spiral airflow in the passive centrifugal device 3; the passive centrifugal device 3 comprises a centrifugal tower 31, an exhaust pipe 32 and a slag discharging pipe 33, wherein a cylindrical upper separation chamber 31A and a funnel-shaped lower separation chamber 31B are arranged in the centrifugal tower 31, the upper end opening of the lower separation chamber 31B is connected with the upper separation chamber 31A, the exhaust pipe 32 is arranged in the upper separation chamber 31A and is coaxially arranged with the upper separation chamber 31A, an upper exhaust port of the exhaust pipe 32 is exposed out of the upper separation chamber 31A from the top of the upper separation chamber 31A, and the lower end of the exhaust pipe 32 is positioned at the joint of the upper separation chamber 31A and the lower separation chamber 31B; the bottom of the lower separation chamber 31B is provided with a slag discharge port, the water inlet of the slag discharge pipe 33 is connected with the slag discharge port, the water outlet of the slag discharge pipe 33 is positioned above the waste liquid collecting tank 5, and the water outlet height of the slag discharge pipe 33 is greater than the water inlet height of the slag discharge pipe 33; the water inlet of the micro-filter 6 is connected with the waste liquid collecting tank 5, and the water outlet of the micro-filter 6 is connected with the water collecting tank 7; the air inlet spray pipe 2 is arranged in the air inlet pipeline 1, the annular spray pipe 4 is arranged at the top end of the upper separation chamber 31A, the air inlet spray pipe 2 and the annular spray pipe 4 are externally connected with a water source, and meanwhile, the air inlet spray pipe 2 and the annular spray pipe 4 are connected with the water collection tank 7 through the circulating pump 8.
The process of the centrifugal dust-removing type waste gas treatment method of the present invention is further described below with reference to the accompanying drawings.
For step (2), the air inlet pipeline 1 is arranged in a downward inclined manner, so that waste gas enters the separation chamber through the air inlet pipeline 1 obliquely downwards along the circumferential tangential direction of the separation chamber, and meanwhile, the air inlet spray pipe 2 in the air inlet pipeline 1 humidifies high-pressure dust-containing waste gas, so that dust in the high-pressure dust-containing waste gas is humidified, aggravated and condensed into large-particle dust, the large-particle dust can fall on the bottom surface of the air inlet pipeline 1 and naturally falls into the upper separation chamber 31A of the passive centrifugal device 3 under the pushing of high pressure.
In the step (3), high-pressure dust-containing waste gas enters an upper separation chamber 31A, after the dust-containing waste gas is subjected to high-pressure and humidification treatment, dust in the high-pressure dust-containing waste gas is humidified and aggravated to be condensed into large-particle dust, after the large-particle dust collides with the inner wall of the upper separation chamber 31A, downward spiral airflow is formed between the inner wall of the upper separation chamber 31A and the outer wall of an exhaust pipe 32 to generate a centrifugal force with a certain strength, the humidified and aggravated large-particle is separated into large-particle dust which can be thrown out and separated, and water flow flushing is carried out through an annular spray pipe 4 to prevent dust from accumulating on the inner wall of a passive centrifugal device 3; when the spiral air flow reaches the lower separation chamber 31B downwards, the spiral air flow is reflected by the side wall of the lower separation chamber 31B, clean air collides with the side wall of the lower separation chamber 31B to change the direction, upward spiral air flow is formed after multiple changes, the cross section radius of the lower separation chamber 31B is reduced downwards, the side wall of the lower separation chamber 31B is an arc surface inclined from top to bottom, the separated clean air forms upward spiral air flow which is influenced by the side wall of the lower separation chamber 31B, the radius of an air flow ring is smaller and is concentrated near the axis of the lower separation chamber 31B, and when the dry spiral air flow reaches the joint of the upper separation chamber 31A and the lower separation chamber 31B, the dry air flow enters the middle exhaust pipe 32 and is finally exhausted through the exhaust pipe; on the other hand, after the high-pressure dust-containing waste gas is separated into dust-containing sewage and clean air, the dust-containing sewage falls into the bottom of the lower separation chamber 31B, the dust-containing sewage is discharged through the slag discharge pipe 33, and the dust-containing sewage is collected through the waste liquid collecting tank 5; because the height of the water outlet of the slag discharge pipe 33 is larger than the height of the water inlet, a communicating vessel is formed between the bottom of the lower separation chamber 31B and the slag discharge pipe 33, dust-containing sewage is accumulated in the slag discharge pipe 33, waste gas can rebound upwards when being blown downwards to the surface of accumulated water in a spiral manner, positive and negative double-spiral airflow is further formed at the lower part of the lower separation chamber 31B, and meanwhile, the waste gas can be prevented from being blown out of the slag discharge pipe 33 to the outside of the centrifugal tower 31.
For step (4), this embodiment also provides an improved structure of the micro-filter 6, as shown in fig. 2, the micro-filter 6 is provided with a dust collecting pull groove 602 which can extend from the outside of the machine to the inside of the filter cartridge 601, dust-containing sewage enters the filter cavity of the micro-filter 6 for micro-filtration, the filter cartridge 601 of the micro-filter 6 is provided with a filter cartridge spray pipe 603 on the top surface of the inner cavity wall of the micro-filter 6 in the rolling process, the filter cartridge 601 is sprayed from above, dust particles filtered out and attached to the filter cartridge 601 are sprayed into the dust collecting pull groove 602, high-concentration dust-containing sewage is collected in the dust collecting pull groove 602, and dust-free purified water obtained by micro-filtration is discharged from the bottom of the filter cavity. In the microfiltration process, the filter cartridge 601 is sprayed and washed, dust particles fall into the dust collection pull groove 602 to form high-concentration dust-containing wastewater, so that the treatment efficiency of the dust-containing wastewater is improved, the separated high-concentration dust-containing wastewater is more convenient to treat subsequently, and the treatment cost is further reduced; and the separated clean water is conveyed to a water collection tank 7 for collection, and is reused for humidification in the step (2) and flushing in the step (3) through a circulating pump 8.
According to the centrifugal dust-removing waste gas treatment method, dust in high-pressure dust-containing waste gas is humidified, aggravated and condensed into large-particle dust after high-pressure and humidifying treatment, the large-particle dust subjected to the humidification aggravation is separated into large-particle dust which can be thrown out and separated after passive centrifugal treatment, and water flow scouring is carried out during the passive centrifugal treatment, so that the large-particle dust is further humidified and aggravated, is thrown out from the waste gas more easily, and the dust removing effect of the waste gas is improved; the power of passive centrifugal treatment comes from the pressure after the waste gas pressure boost, does not have the power supply by itself, simplifies equipment greatly, reduces processing cost, and dust-containing sewage after the separation forms dust-free clean water through the microfiltration treatment simultaneously, recycles dust-free clean water, has better environmental protection effect, and the filter residue water content that separates after the microfiltration is low moreover, and subsequent processing is easier, also further reduces the processing cost of original dust-containing sewage.
In addition, it should be noted that, in the specific embodiments described in the present specification, names of various parts and the like may be different, and all equivalent or simple changes of the structures, features and principles described in the conception of the present invention are included in the protection scope of the present invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions in a similar manner without departing from the scope of the invention as defined in the accompanying claims.
Claims (8)
1. The centrifugal dust-removing waste gas treatment method is characterized by comprising the following steps of:
(1) The dust-containing waste gas is subjected to supercharging treatment, so that the dust-containing waste gas is changed into high-pressure dust-containing waste gas;
(2) Humidifying the high-pressure dust-containing waste gas to humidify and aggravate dust in the high-pressure dust-containing waste gas to agglomerate into large-particle dust;
(3) Carrying out passive centrifugal treatment on the humidified high-pressure dust-containing waste gas, and flushing by adopting water flow at the same time, so that the humidified high-pressure dust-containing waste gas is separated into dust-containing sewage and clean air, the clean air is discharged outwards, and the dust-containing sewage is collected;
(4) And (3) carrying out microfiltration treatment on the collected dust-containing sewage to form cleaner dust-free clean water, wherein the dust-free clean water is used as a water source for the humidification treatment in the step (2) and the water flow flushing in the step (3).
2. The centrifugal dust-removing exhaust gas treatment method according to claim 1, wherein: in the step (2), an air inlet pipeline is used for conveying high-pressure dust-containing waste gas, and a spraying mode is adopted in the air inlet pipeline for humidifying the high-pressure dust-containing waste gas.
3. The centrifugal dust-removing exhaust gas treatment method according to claim 2, wherein: in the step (3), the high-pressure dust-containing waste gas after humidification is subjected to passive centrifugal treatment by adopting a passive centrifugal device, the passive centrifugal device can enable the high-pressure dust-containing waste gas entering the inner cavity of the passive centrifugal device to form spiral airflow and throw dust in the high-pressure dust-containing waste gas to the inner wall of the passive centrifugal device, and meanwhile, annular water flow is arranged at the top end of the inner part of the passive centrifugal device to wash the inner wall of the passive centrifugal device.
4. A centrifugal dust-removing exhaust gas treatment method according to claim 3, wherein: the passive centrifugal device comprises a centrifugal tower, an exhaust pipe and a slag discharge pipe; the centrifugal tower is internally provided with a cylindrical upper separation chamber and a funnel-shaped lower separation chamber, an upper end opening of the lower separation chamber is connected with the upper separation chamber, an exhaust pipe is arranged in the upper separation chamber and is coaxially arranged with the upper separation chamber, an upper end exhaust port of the exhaust pipe is exposed out of the upper separation chamber from the top of the upper separation chamber, the lower end of the exhaust pipe is positioned at the joint of the upper separation chamber and the lower separation chamber, high-pressure dust-containing waste gas enters the upper separation chamber, a downward spiral airflow is formed between the inner wall of the upper separation chamber and the outer wall of the exhaust pipe, the spiral airflow separates the high-pressure dust-containing waste gas into dust-containing sewage and clean air in the step (3), the dust-containing sewage falls into the bottom of the lower separation chamber, a slag discharge port is arranged at the bottom of the lower separation chamber, a water inlet of the slag discharge pipe is connected with the slag discharge port, and the dust-containing sewage is discharged through the slag discharge pipe; after the clean air downwards reaches the lower separation chamber, the clean air is repeatedly rebounded by the side wall of the lower separation chamber to form upward clean spiral air flow with smaller radius, and finally is discharged through the exhaust pipe.
5. The centrifugal dust-removing exhaust gas treatment method according to claim 4, wherein: and (3) collecting dust-containing sewage through a waste liquid collecting tank, wherein a water outlet of the slag discharging pipe is positioned above the waste liquid collecting tank, and the height of the water outlet of the slag discharging pipe is larger than that of the water inlet of the slag discharging pipe.
6. The centrifugal dust-removing exhaust gas treatment method according to any one of claims 3 to 5, wherein: in the step (2), an air outlet of the air inlet pipeline is communicated with an air inlet of the passive centrifugal device; the air inlet pipeline is arranged in a downward inclined mode, and the horizontal extending direction of the air inlet pipeline is tangential to the outer circumference of the spiral airflow in the passive centrifugal device.
7. The centrifugal dust-removing exhaust gas treatment method according to any one of claims 3 to 5, wherein: and (3) carrying out microfiltration treatment on the collected dust-containing sewage in the step (4) through a microfiltration machine to form cleaner dust-free purified water, and conveying the clean purified water to the air inlet pipeline and the passive centrifugal device through a circulating pump after collecting the clean purified water to serve as a water source for humidification treatment in the step (2) and water flow scouring in the step (3).
8. The centrifugal dust-removing exhaust gas treatment method according to claim 7, wherein: the micro-filter is provided with a dust collection pull groove which can extend into the filter cylinder from the outside of the machine, dust-containing sewage enters a filter cavity of the micro-filter for micro-filtration, the filter cylinder of the micro-filter is sprayed and washed from the upper part of the filter cylinder in the rolling process, dust particles filtered out and attached to the filter cylinder are sprayed into the dust collection pull groove, high-concentration dust-containing sewage is collected in the dust collection pull groove, and dust-free purified water obtained by micro-filtration is discharged from the bottom of the filter cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311314022.0A CN117046250A (en) | 2023-10-11 | 2023-10-11 | Centrifugal dust-removing type waste gas treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311314022.0A CN117046250A (en) | 2023-10-11 | 2023-10-11 | Centrifugal dust-removing type waste gas treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117046250A true CN117046250A (en) | 2023-11-14 |
Family
ID=88664819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311314022.0A Pending CN117046250A (en) | 2023-10-11 | 2023-10-11 | Centrifugal dust-removing type waste gas treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117046250A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923016A (en) * | 2015-06-02 | 2015-09-23 | 遂宁市新华西铝业有限公司 | Device for treating exhaust gas generated during smelting of waste aluminum products |
| CN105148626A (en) * | 2015-09-24 | 2015-12-16 | 广东美的制冷设备有限公司 | Purifier |
| CN107551794A (en) * | 2017-10-26 | 2018-01-09 | 蒋丹军 | A kind of emission-control equipment |
| CN108854272A (en) * | 2018-07-16 | 2018-11-23 | 文民杰 | A kind of dust-extraction unit of efficient deashing |
| CN212214816U (en) * | 2020-10-30 | 2020-12-25 | 寿光清源水务有限公司 | Sewage foreign matter blocking device |
| CN213610137U (en) * | 2020-10-26 | 2021-07-06 | 上海宏微环境科技有限公司 | Leather effluent disposal system |
| CN216677569U (en) * | 2021-09-22 | 2022-06-07 | 凤城市凤华镁业有限公司 | Powder dust remover with dust fall function sprays |
| CN216935298U (en) * | 2022-02-15 | 2022-07-12 | 广东尚帆达家居有限公司 | Dust collector is used in furniture production |
| CN219252100U (en) * | 2023-02-16 | 2023-06-27 | 深圳市城市公共安全技术研究院有限公司 | Water-excited cyclone dust collector |
| CN219580038U (en) * | 2023-03-23 | 2023-08-25 | 上海明珠晨曦智能科技有限公司 | Micro-filter with detachable filter screen |
-
2023
- 2023-10-11 CN CN202311314022.0A patent/CN117046250A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923016A (en) * | 2015-06-02 | 2015-09-23 | 遂宁市新华西铝业有限公司 | Device for treating exhaust gas generated during smelting of waste aluminum products |
| CN105148626A (en) * | 2015-09-24 | 2015-12-16 | 广东美的制冷设备有限公司 | Purifier |
| CN107551794A (en) * | 2017-10-26 | 2018-01-09 | 蒋丹军 | A kind of emission-control equipment |
| CN108854272A (en) * | 2018-07-16 | 2018-11-23 | 文民杰 | A kind of dust-extraction unit of efficient deashing |
| CN213610137U (en) * | 2020-10-26 | 2021-07-06 | 上海宏微环境科技有限公司 | Leather effluent disposal system |
| CN212214816U (en) * | 2020-10-30 | 2020-12-25 | 寿光清源水务有限公司 | Sewage foreign matter blocking device |
| CN216677569U (en) * | 2021-09-22 | 2022-06-07 | 凤城市凤华镁业有限公司 | Powder dust remover with dust fall function sprays |
| CN216935298U (en) * | 2022-02-15 | 2022-07-12 | 广东尚帆达家居有限公司 | Dust collector is used in furniture production |
| CN219252100U (en) * | 2023-02-16 | 2023-06-27 | 深圳市城市公共安全技术研究院有限公司 | Water-excited cyclone dust collector |
| CN219580038U (en) * | 2023-03-23 | 2023-08-25 | 上海明珠晨曦智能科技有限公司 | Micro-filter with detachable filter screen |
Non-Patent Citations (1)
| Title |
|---|
| 许大勇等人: "内燃机车柴油机", 冶金工业出版社, pages: 98 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103463920A (en) | Dust removal method of compound dust remover | |
| CN201101941Y (en) | Desulfurization and dust removal integrated device of fiberglass of industry coal-fired boiler | |
| CN202289850U (en) | Smoke burning disposal system for sludge | |
| CN209771691U (en) | dustproof water circulation filtration system | |
| CN108543632B (en) | Wet type cyclone dust collector capable of recycling washing liquid | |
| CN102600994A (en) | Electric spraying cyclone dust collector and application thereof | |
| CN117046250A (en) | Centrifugal dust-removing type waste gas treatment method | |
| CN216295665U (en) | Dust removal device of sand blasting machine | |
| CN102179117B (en) | Cloth-bag dust removing device using water to clear ash | |
| CN219984278U (en) | Centrifugal dust removal tower | |
| CN211098172U (en) | High-concentration dust cyclone centrifugal dust collector | |
| CN211302512U (en) | Spray tower for chemical production | |
| CN211987803U (en) | Waste rubber recycling and dust removing device | |
| CN209577022U (en) | Wet type cyclone electrostatic precipitator | |
| CN211274050U (en) | Multistage water spray dust removal and dehydration defogging purifier | |
| CN209848589U (en) | Novel wet dust removal equipment | |
| CN210613246U (en) | High-efficient dust collector of image concentrator | |
| CN214159060U (en) | High-efficient cyclone dust collector is used in tire production | |
| CN219212541U (en) | Dust collector | |
| CN219462921U (en) | Cyclone circulating water dust removal device | |
| CN110917736A (en) | Tube bundle type dust and mist remover | |
| CN216878486U (en) | Automatic washing device for removing grease and acid-base impurities in gas | |
| CN215822768U (en) | Alkali washing liquid separating device | |
| CN215585886U (en) | Wet dust collector | |
| CN214130856U (en) | Environment-friendly dust removal equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |