CN215388218U - High-temperature tail gas fine dust removal and wet deacidification equipment with skid-mounted structure - Google Patents
High-temperature tail gas fine dust removal and wet deacidification equipment with skid-mounted structure Download PDFInfo
- Publication number
- CN215388218U CN215388218U CN202120927555.6U CN202120927555U CN215388218U CN 215388218 U CN215388218 U CN 215388218U CN 202120927555 U CN202120927555 U CN 202120927555U CN 215388218 U CN215388218 U CN 215388218U
- Authority
- CN
- China
- Prior art keywords
- tail gas
- air chamber
- skid
- temperature tail
- dust removal
- 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.)
- Active
Links
Images
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model discloses high-temperature tail gas fine dust removal and wet deacidification equipment with a skid-mounted structure, which comprises a pulse bag type dust remover and a wet deacidification tower which are connected with each other, wherein the pulse bag type dust remover comprises a dirty air chamber, an isolation chamber and a clean air chamber which are sequentially and independently arranged from bottom to top, the dirty air chamber, the isolation chamber and the clean air chamber are communicated, switched and closed through a switching valve, an air inlet is formed in the dirty air chamber, an air outlet is formed in the clean air chamber, and a dust filter bag and a pulse structure of the pulse bag type dust remover are arranged in the isolation chamber. The high-temperature tail gas fine dust removal and wet deacidification equipment with the skid-mounted structure can greatly reduce the amount of dust in the flue gas, greatly prolong the service life of the filter bag and save the maintenance cost and the construction period on the premise of ensuring that the direct thermal desorption equipment can continuously operate under any working condition.
Description
Technical Field
The utility model belongs to the field of polluted soil remediation equipment, and particularly relates to high-temperature tail gas fine dust removal and wet deacidification equipment with a skid-mounted structure for site remediation thermal desorption equipment.
Background
There are many large-scale organic pollution or organic and heavy metal combined pollution plots in China. In the process of repairing and treating large organic polluted plots, direct thermal desorption equipment with large treatment capacity is almost indispensable equipment and is also a relatively large type of equipment in a site repairing equipment system.
The thermal desorption tail gas from the direct thermal desorption equipment contains a large amount of water vapor, carbon dioxide, nitrogen, a certain amount of dust, a small amount of oxygen and toxic and harmful gas thermally desorbed from soil, and after the thermal desorption tail gas is subjected to preliminary dust removal through a cyclone dust collector, the toxic and harmful gas thermally desorbed is subjected to pyrolysis through high-temperature incineration in a secondary combustion chamber, so that acid gas possibly containing chloride ions and sulfur ions is formed; after cooling by a heat exchanger and a quench tower, the tail gas enters a pulse bag type dust collector for fine dust removal within the temperature range of 180-220 ℃, and then enters a wet/dry deacidification tower for deacidification treatment of the tail gas.
A bypass pipeline is not arranged on an inlet pipeline and an outlet pipeline of a traditional pulse bag type dust collector, when high-temperature tail gas is lower than 180 ℃, the tail gas directly enters the pulse bag type dust collector, and the pulse bag type dust collector is in a working state at the moment. In the temperature range of 170-180 ℃, if the tail gas contains a large amount of water vapor, the filter bag is likely to be hydrolyzed, resulting in the damage of the filter bag. When the high-temperature tail gas is higher than 220 ℃ and even higher than 240 ℃ for a short time, the filter bag is easy to burn through due to high temperature, so that the filter bag is damaged. After the filter bag is damaged, in order to prevent the dust content in the flue gas emission index from reaching the standard, the whole direct thermal desorption equipment is stopped, and the machine is started again after the filter bag is replaced. With a spare bag, the down time caused by changing the bag is at least 6 hours, thus the loss is at least 3-4 ten thousand yuan/time.
The pulse bag type dust collector is in an abnormal working state for a long time, so that the service life of the filter bag is greatly reduced, and the maintenance cost of the equipment is increased.
The improvement measures caused by the method are that a bypass pipeline is arranged at an inlet and an outlet of the pulse bag type dust collector, and 4 valves, 2 elbows and a section of pipeline are additionally arranged. This not only leads to the area increase of equipment, and the cost rises, is unfavorable for the sled dress of equipment to be changed, has also increased the degree of difficulty of direct thermal desorption equipment operation.
In the abnormal working temperature interval of the pulse bag type dust collector, if the pulse bag type dust collector is not in a working state, dust carried in high-temperature tail gas can automatically enter a subsequent deacidification tower. If the deacidification tower is a dry deacidification tower, the dust content in the tail gas emission index is possibly over-standard in the abnormal working temperature range of the pulse bag type dust collector.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide high-temperature tail gas fine dust removal and wet deacidification equipment with a skid-mounted structure, so that the dust amount in the flue gas is greatly reduced, the service life of a filter bag is greatly prolonged, and the maintenance cost and the construction period are saved on the premise of ensuring that the direct thermal desorption equipment can continuously run under any working condition.
The purpose of the utility model is realized by the following technical scheme:
the utility model provides a skid-mounted structure's meticulous dust removal of high temperature tail gas and wet process deacidification equipment, includes interconnect's pulse bag collector and wet process deacidification tower, pulse bag collector includes inside dirty plenum, isolation chamber and the clean plenum that independently sets up from bottom to top in proper order, wherein realize through the diverter valve between dirty plenum, isolation chamber and the clean plenum that the intercommunication switches over and closes, be provided with the air intake on the dirty plenum, be provided with the air outlet on the clean plenum, wherein pulse bag collector's dust bag and pulse structure set up in the isolation chamber.
Furthermore, the bottom of the pulse bag type dust collector is provided with an ash collecting hopper.
Furthermore, the bottom of the ash collecting hopper is provided with a discharger.
Furthermore, the bottom of the pulse bag type dust collector is provided with a supporting leg frame.
Further, the skid-mounted high-temperature tail gas fine dust removal and wet deacidification equipment is characterized in that the switching valve is a pneumatic switching valve.
Furthermore, the discharger is a star-shaped discharger.
According to the high-temperature tail gas fine dust removal and wet deacidification equipment with the skid-mounted structure, the pneumatic switching valve penetrating through the three chambers is arranged among the dirty air chamber, the isolation chamber and the clean air chamber of the pulse bag type dust collector, and can be set to be automatically opened when the temperature of the air inlet of the pulse bag type dust collector is lower than 180 ℃ or higher than 220 ℃ in the actual use process, so that a channel between the dirty air chamber and the clean air chamber is opened, gas is led out from the dirty air chamber through the clean air chamber, and the filter bag structure in the isolation chamber is protected.
According to the high-temperature tail gas fine dust removal and wet deacidification equipment with the skid-mounted structure, when the temperature of the air inlet of the pulse bag type dust collector is in an abnormal working state of the filter bag, dust fall operation and deacidification operation can be carried out on the high-temperature tail gas through the wet deacidification tower in a spraying mode, and when the temperature of the air inlet of the pulse bag type dust collector is in a normal working state of the filter bag, only the deacidification operation is carried out on the high-temperature tail gas through the wet deacidification tower.
When the direct thermal desorption equipment stably operates, if the high-temperature tail gas is at the temperature of 180-220 ℃, fine dust removal is carried out after the high-temperature tail gas passes through a pulse dust remover, so that the dust content in the tail gas is ensured to be less than or equal to 20mg/m3(ii) a And then entering a wet acid removal tower for acid-base neutralization to remove acid gas in tail gas and further spraying for dedusting.
Under the condition that high-temperature tail gas is probably not in a temperature range of 180 plus 220 ℃ when the direct thermal desorption equipment is operated at a starting stage, a short-period parameter adjusting stage or a short-period unstable operation stage, the high-temperature tail gas bypasses a filter bag of a pulse dust collector after being switched by an internal pipeline and directly enters a wet-method deacidification tower for acid-base neutralization to remove acid gas in the tail gas and spray dust removal.
The high-temperature tail gas fine dust removal and wet deacidification equipment with the skid-mounted structure can obviously reduce the shutdown accidents caused by the damage of the filter bag, and avoid the shutdown time (at least 6 hours) of the rotary kiln, namely startup time; the consumption of energy sources such as natural gas, electricity and the like is reduced; the labor of matched construction machinery and operators is reduced; the service life of the filter bag is prolonged.
Compared with the prior art, the utility model also has the following advantages:
(1) the continuous operation capacity of the direct thermal desorption equipment can be realized under any working condition.
(2) The occupied area and the investment cost of direct thermal desorption equipment are reduced, the operation flow of the direct thermal desorption equipment is simplified, and the skid-mounted equipment is well realized;
(3) the reliability and continuous stable operation capability of direct thermal desorption equipment are greatly improved;
(4) the contact time between maintenance personnel and dust is reduced, the working environment is improved, and the working efficiency is improved.
Drawings
FIG. 1 is a schematic view of the connection of a pulse bag type dust collector and a wet deacidification tower;
FIG. 2 is a schematic structural view of a pulse bag type dust collector;
in fig. 1 and 2, 1 is a pulse bag dust collector, 11 is a switching valve, 101 is a dirty air chamber, 102 is an isolation chamber, 103 is a clean air chamber, 104 is an air inlet, 105 is an air outlet, 106 is an ash collecting hopper, 107 is a discharger, and 108 is a leg rest.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
Example 1
The embodiment provides high-temperature tail gas fine dust removal and wet deacidification equipment with a skid-mounted structure, as shown in fig. 1 and fig. 2, the high-temperature tail gas fine dust removal and wet deacidification equipment comprises a pulse bag type dust remover 1 and a wet deacidification tower 2 which are connected with each other, wherein the pulse bag type dust remover 1 comprises a dirty air chamber 101, an isolation chamber 102 and a clean air chamber 103 which are sequentially and independently arranged from bottom to top, the dirty air chamber 101, the isolation chamber 102 and the clean air chamber 103 are communicated, switched and closed through a switching valve 11, the switching valve 11 is a pneumatic switching valve, an air inlet 104 is arranged on the dirty air chamber 101, an air outlet 105 is arranged on the clean air chamber 103, and a dust filter bag and a pulse structure of the pulse bag type dust remover 1 are arranged in the isolation chamber 102. The bottom of the pulse bag type dust collector 1 is provided with a dust collecting hopper 106, the bottom of the dust collecting hopper 106 is provided with a discharger 107, the discharger 107 is a star-shaped discharger, and the bottom of the pulse bag type dust collector 1 is provided with a supporting leg frame 108.
A pneumatic switching valve penetrating through the three chambers is arranged among the dirty air chamber, the isolation chamber and the clean air chamber of the pulse bag type dust collector, the pneumatic switching valve is strictly sealed at the partition plate, and when the temperature of the air inlet of the pulse bag type dust collector is lower than 180 ℃ or higher than 220 ℃, the pneumatic switching valve automatically switches, so that air directly enters the clean air chamber through the dirty air chamber and is discharged from the air outlet, and the aim of protecting the filter bag is fulfilled.
According to the high-temperature tail gas fine dust removal and wet deacidification equipment with the skid-mounted structure, when the temperature of the air inlet of the pulse bag type dust collector is in an abnormal working state of a filter bag, the high-temperature tail gas can be subjected to dust fall operation (the time is short, the high-temperature tail gas is used as temporary substitute dust fall operation equipment of the pulse bag type dust collector) and deacidification operation in a spraying mode through the wet deacidification tower, and when the temperature of the air inlet of the pulse bag type dust collector is in a normal working state of the filter bag, the wet deacidification tower only performs deacidification operation on the high-temperature tail gas.
The high-temperature tail gas fine dust removal and wet deacidification equipment with the skid-mounted structure can remarkably reduce machine halt accidents caused by filter bag damage, and avoid the machine halt time (at least 6 hours) of a rotary kiln, namely starting; the consumption of energy sources such as natural gas, electricity and the like is reduced; the labor of matched construction machinery and operators is reduced; the service life of the filter bag is prolonged.
The utility model and its embodiments have been described above schematically, without limitation, and the embodiments shown in the drawings are only one of the embodiments of the utility model, to which the actual structure is not limited. Therefore, if a person skilled in the art receives the teachings of the present invention, without inventive design, a similar structure and an embodiment to the above technical solution should be covered by the protection scope of the present patent.
Claims (6)
1. The high-temperature tail gas fine dust removal and wet deacidification equipment with the skid-mounted structure comprises a pulse bag type dust collector (1) and a wet deacidification tower (2) which are connected with each other, and is characterized in that the pulse bag type dust collector (1) comprises a dirty air chamber (101), an isolation chamber (102) and a clean air chamber (103) which are sequentially and independently arranged from bottom to top, wherein the dirty air chamber (101), the isolation chamber (102) and the clean air chamber (103) are communicated and switched and closed through a switching valve (11), an air inlet (104) is formed in the dirty air chamber (101), an air outlet (105) is formed in the clean air chamber (103), and a dust filter bag and a pulse structure of the pulse bag type dust collector (1) are arranged in the isolation chamber (102).
2. The skid-mounted structured high-temperature tail gas fine dust removal and wet deacidification equipment as claimed in claim 1, wherein the bottom of the pulse bag type dust collector (1) is provided with an ash collecting hopper (106).
3. The high-temperature tail gas fine dust removal and wet deacidification equipment with the skid-mounted structure according to the claim 2, wherein a discharger (107) is arranged at the bottom of the ash collecting hopper (106).
4. The skid-mounted structured high-temperature tail gas fine dust removal and wet deacidification equipment as claimed in claim 1, wherein a leg support (108) is arranged at the bottom of the pulse bag type dust collector (1).
5. The skid-mounted structured high-temperature tail gas fine dust removal and wet deacidification equipment as claimed in claim 1, wherein said switching valve (11) is a pneumatic switching valve.
6. The high-temperature tail gas fine dust removal and wet deacidification equipment with the skid-mounted structure according to the claim 3, wherein the discharger (107) is a star discharger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120927555.6U CN215388218U (en) | 2021-04-30 | 2021-04-30 | High-temperature tail gas fine dust removal and wet deacidification equipment with skid-mounted structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120927555.6U CN215388218U (en) | 2021-04-30 | 2021-04-30 | High-temperature tail gas fine dust removal and wet deacidification equipment with skid-mounted structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215388218U true CN215388218U (en) | 2022-01-04 |
Family
ID=79673845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120927555.6U Active CN215388218U (en) | 2021-04-30 | 2021-04-30 | High-temperature tail gas fine dust removal and wet deacidification equipment with skid-mounted structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215388218U (en) |
-
2021
- 2021-04-30 CN CN202120927555.6U patent/CN215388218U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203869049U (en) | Hazardous waste incineration system | |
| CN103255260A (en) | Converter flue gas purifying and waste heat recovering system and bag-type dust removing technology | |
| CN107899888B (en) | VOCs treatment device for precision coating equipment | |
| CN216192462U (en) | Converter dry dedusting and smoke discharging system | |
| CN101851695A (en) | Dry bag-type coal gas purifying and recycling process for oxygen-resistant converter | |
| CN101104809B (en) | Coal feeding and coke extracting two-in-one earth station dust removing system for coke oven | |
| CN215388218U (en) | High-temperature tail gas fine dust removal and wet deacidification equipment with skid-mounted structure | |
| CN113528741A (en) | Single-channel pure dry dedusting system and method for comprehensive utilization of converter flue gas waste heat | |
| CN201304313Y (en) | Dry bag-type dust exhaust device for gas gasification burner | |
| CN209326387U (en) | A kind of power generation system with residual heat of fume | |
| CN102021264B (en) | Dust-removal and waste heat recovery system of steelmaking converter gas and recovery method of dust-removal | |
| CN202666621U (en) | Dry method dust removal device of hermetic electric furnace and with high-temperature bypass devices | |
| CN102641637B (en) | Dust removal system with bypass device, one for use and one for spare | |
| CN206814805U (en) | A kind of process system to ultra-clean dedusting of flue gas of converter | |
| CN201735285U (en) | Boiler flue dust filtration and purification apparatus | |
| CN202303400U (en) | Smoke processing device matched with household garbage incinerator | |
| CN201988321U (en) | Incinerating smoke cleaning processing device | |
| CN202675904U (en) | Novel dry method dust removing device for inclosed electric furnace | |
| CN212283261U (en) | A dust pelletizing system for medical waste burns tail gas treatment | |
| CN202666622U (en) | Inclosed electric furnace dry method dust removing device | |
| CN210951341U (en) | Multifunctional inert gas system for treating VOC | |
| CN202666620U (en) | Sealed electric furnace dry method dust removal system | |
| CN209783317U (en) | High-temperature flue gas system of heat recovery coke oven | |
| CN202666580U (en) | Inclosed electric furnace dry method dust removing device provided with bypass bag-type dust removers | |
| CN201973727U (en) | Regenerative furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |