CN111346890A - Dust and waste gas closed circulating ventilation concentration system - Google Patents
Dust and waste gas closed circulating ventilation concentration system Download PDFInfo
- Publication number
- CN111346890A CN111346890A CN201811565817.8A CN201811565817A CN111346890A CN 111346890 A CN111346890 A CN 111346890A CN 201811565817 A CN201811565817 A CN 201811565817A CN 111346890 A CN111346890 A CN 111346890A
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- dust
- pipeline
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- waste gas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/442—Auxiliary equipment or operation thereof controlling filtration by measuring the concentration of particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/46—Auxiliary equipment or operation thereof controlling filtration automatic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a dust and waste gas closed circulating ventilation concentration system, which comprises a closed cover, a collecting cover, a dust removal device and a circulating induced draft fan, wherein the closed cover is used for sealing a production line for discharging dust and waste gas, the production line is arranged at the lower part of an inner cavity of the closed cover, and the closed cover is provided with an air supplementing opening; the collecting cover is arranged above dust and waste gas discharging equipment in the production line; the air inlet of the dust removal device is communicated with the collection cover through a collection pipeline; the air inlet of the circulating induced draft fan is communicated with the air outlet of the dust removal device, the air outlet of the circulating induced draft fan is divided into two paths through a pipeline, and one path of pipeline is communicated with the purification pipeline through a first valve; the other pipeline is communicated with the return pipeline through a second valve; the return duct is in communication with the enclosure. The concentration system can effectively improve the concentration of the waste gas, thereby improving the treatment efficiency of subsequent purification equipment, reducing the purification energy consumption, reducing the number of the purification equipment and reducing the operating cost.
Description
Technical Field
The invention relates to the field of concentration of waste gas discharged by a production line, relates to concentration of waste gas before dust and waste gas enter a purifying device in a rubber vulcanization production line, and particularly relates to a dust and waste gas closed circulating ventilation concentration system.
Background
The industrial production line discharges dust and harmful waste gas in the production process, for example, smoke emitted by the rubber mixing production line in the rubber mixing process comprises dust and Volatile Organic Compounds (VOC for short), the smoke emitted by a smoke emission point of the rubber mixing processing production equipment is sucked by an air suction system and enters the purification equipment for dust removal and purification, and the air after dust removal and purification is discharged into the air through high-altitude discharge equipment. In the purification equipment, for example, in the 'dry oxidation rubber mixing waste gas deodorization and purification device and method' with publication number CN102000484A, the dust removal, deodorization and purification are performed on the rubber mixing flue gas through a bag type dust remover, an ozone generator, an oxidation reaction tank and a gas adsorption and oxidation device, so as to obtain the gas which can be discharged.
This kind of mode that smelts gluey waste gas with suction directly gets into purifier, because the dust and the VOC concentration that the flue gas loss point was escaped are not high, cause purifier treatment effeciency low, the energy consumption big, every gluey equipment all need be equipped with one set of purifier, and the clarification plant quantity that needs is more, and the working costs is higher.
Disclosure of Invention
The invention aims to provide a dust and waste gas closed circulating ventilation concentration system, which can effectively improve the concentration of waste gas, thereby improving the treatment efficiency of subsequent purification equipment, reducing the purification energy consumption, reducing the number of the purification equipment and reducing the operating cost.
The technical scheme for realizing the purpose of the invention is as follows:
a dust and waste gas closed circulating ventilation concentration system comprises
The device comprises a closed cover and a collecting cover, wherein the closed cover is used for sealing a production line for discharging dust and waste gas, the production line is arranged at the lower part of an inner cavity of the closed cover, and the closed cover is provided with an air supplementing opening; the collecting cover is arranged above dust and waste gas discharging equipment in the production line;
the air inlet of the dust removal device is communicated with the collection cover through a collection pipeline;
the air outlet of the circulating induced draft fan is divided into two paths through a pipeline, wherein one path of pipeline is communicated with the purifying pipeline through a first valve; the other pipeline is communicated with the return pipeline through a second valve; the return duct is in communication with the enclosure.
Including controller, dust concentration sensor and gas sensor set up in airtight cover, and dust concentration sensor, gas sensor are connected with the controller electricity, and the controller is connected with circulation draught fan, first valve, second valve electricity.
The gas sensor is a VOC sensor.
This kind of structure, whole workshop production line set up in a sealed cover inner chamber, and every individual plant dust, exhaust emission equipment top set up in the production line collects the cover, collects the cover and accesss to dust collector through the pipeline, and dust collector's air-out pipeline divide into two directions, and one accesss to clarification plant through the purge tube, and another accesss to in the sealed cover through the return duct.
When the device works, a first valve leading to the purifying equipment is closed, a second valve leading to the inside of the closed cover is opened, the dedusted gas is returned to the closed cover, the flue gas dissipated by the production equipment is collected through the collecting cover under the action of the circulating induced draft fan, the flue gas is filtered and dedusted through the dedusting device, the dedusted gas is returned to the closed cover through the return pipeline and continuously circulated, only the flue gas is dedusted in the process, and the VOC in the flue gas is not treated, so that the dust concentration in the flue gas is continuously reduced and the VOC concentration is gradually increased in the circulating process, when the VOC reaches the set gas concentration, the first valve leading to the purifying equipment is opened, and the second valve leading to the inside of the closed cover is closed, the dedusted flue gas enters the purifying equipment for purification, and air is supplemented into the closed cover through the air supplementing opening; after the concentration of the VOC gas is reduced, the first valve is closed, the access to the purification equipment is cut off, the second valve is opened, and the air filtered by the dust removal device returns to the closed cover, so that the circulation is repeated.
The opening and closing of the first valve and the second valve are controlled by a controller, and the controller opens or closes the first valve and the second valve according to the concentration detected by the dust concentration sensor and the gas sensor and the set threshold value, so that the working process is realized.
The concentration system has the advantages that:
1. the gas in the waste gas can be circularly concentrated;
2. the production line is positioned in the closed hood, the air volume processed by the induced draft fan is small, and the energy consumption is reduced;
3. after the waste gas is concentrated, the treatment effect of the purification equipment is good due to the high concentration of the waste gas, the purification efficiency of the purification equipment is improved, and the purification energy consumption is reduced;
4. the lower limit of concentration can be set without limit, thereby meeting the lower limit of enterprise standard and carrying out concentration without limit; a plurality of sets of equipment can be arranged to be connected with one set of purifying equipment, one set of purifying equipment can be shared by 3-4 production lines, the number of the purifying equipment is reduced, the use frequency is improved, the smoke emission amount is reduced, the use value of the purifying equipment is improved, and the operating cost is saved.
Drawings
Fig. 1 is a schematic structural diagram of the embodiment.
In the figure, 1, a closed cover 2, an air supplementing opening 3, a dust removal device 4, a collecting pipeline 5, a collecting cover 6, a circulating induced draft fan 7, a first valve 8, a purifying pipeline 9, a second valve 10, a return pipeline 11, a dust concentration sensor 12, a gas sensor 13, a controller 14, a purifying device 15 and an exhaust device are adopted.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings, in which the described examples are intended to illustrate only some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
as shown in figure 1, the dust and waste gas closed circulating ventilation concentration system comprises
The device comprises a closed cover 1 and a collecting cover 5, wherein the closed cover 1 is used for sealing a production line for discharging dust and waste gas, the production line is arranged at the lower part of an inner cavity of the closed cover, and the closed cover 1 is provided with an air supplementing opening 2; the collecting cover 5 is arranged above dust and waste gas discharging equipment in the production line;
the air inlet of the dust removing device 3 is communicated with the collecting cover 5 through a collecting pipeline 4;
the air inlet of the circulating induced draft fan 6 is communicated with the air outlet of the dust removal device 3, the air outlet of the circulating induced draft fan 6 is divided into two paths through a pipeline, and one path of pipeline is communicated with the purification pipeline 8 through a first valve 7; the other pipeline is communicated with a return pipeline 10 through a second valve 9; said return duct 10 communicates with the enclosure 1.
Including controller 13, dust concentration sensor 11 and gas sensor 12 set up in airtight cover 1, and dust concentration sensor 11, gas sensor 12 are connected with controller 13 electricity, and controller 13 is connected with circulation draught fan 6, first valve 7, second valve 9 electricity.
The Controller 13 is a PLC (Programmable Logic Controller, PLC for short).
The gas sensor 12 is a VOC sensor to detect the VOC concentration of the rubber mixing plant production line.
The opening and closing of the first and second valves 7 and 9 are controlled by a PLC, and the PLC opens or closes the first and second valves 7 and 9 according to a set threshold value based on the concentrations detected by the dust concentration sensor 11 and the gas sensor 12.
The rubber mixing workshop for rubber production is characterized in that the whole rubber mixing workshop production line is arranged in an inner cavity of a closed cover 1, a collecting cover 5 is arranged above each single rubber mixing machine, the collecting cover 5 leads to a dust removal device 3 through a collecting pipeline 4, an air outlet pipeline of the dust removal device 3 is divided into two directions, one of the two directions leads to a purifying device 14 through a purifying pipeline 8, and the other direction leads to the inside of the closed cover 1 through a return pipeline 10.
When the device works, a first valve 7 leading to the purifying equipment is closed, when a dust concentration sensor 11 detects that the dust concentration reaches a set value, a second valve 9 leading to the inside of the closed cover 1 is opened through a controller 13, the gas subjected to dust removal is returned to the closed cover 1, under the action of a circulating induced draft fan 6, the gas dissipated by the rubber mixing equipment is collected through a collecting cover 5, the gas is filtered and dedusted through a dedusting device 3, and the dedusted gas is returned to the closed cover 1 through a return pipeline 10 and is continuously circulated; in the process, only the flue gas is dedusted, and the VOC in the flue gas is not treated, so that in the circulation process, the concentration of dust is gradually reduced, the concentration of the VOC is gradually increased, after the VOC sensor detects that the set gas concentration is reached, the first valve 7 leading to the purifying equipment 14 is opened, the second valve 9 leading to the inside of the closed cover 1 is closed, the dedusted waste gas enters the purifying equipment 14 for purification treatment, the treated air is discharged into the air through the discharging equipment 15, and meanwhile, the air is supplemented into the closed cover 1 through the air supplementing opening 2; after the VOC sensor detects that the concentration of the VOC gas is reduced to a set value, the first valve 7 is closed through the PLC, a passage leading to the purifying equipment 14 is cut off, meanwhile, the second valve 9 is opened, the air filtered by the dust removing device 3 returns to the closed cover 1, and the operation is repeated in this way.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. A dust and waste gas closed circulating ventilation concentration system is characterized by comprising
The device comprises a closed cover and a collecting cover, wherein the closed cover is used for sealing a production line for discharging dust and waste gas, the production line is arranged at the lower part of an inner cavity of the closed cover, and the closed cover is provided with an air supplementing opening; the collecting cover is arranged above dust and waste gas discharging equipment in the production line;
the air inlet of the dust removal device is communicated with the collection cover through a collection pipeline;
the air outlet of the circulating induced draft fan is divided into two paths through a pipeline, wherein one path of pipeline is communicated with the purifying pipeline through a first valve; the other pipeline is communicated with the return pipeline through a second valve; the return duct is in communication with the enclosure.
2. The dust and waste gas closed circulation ventilation and concentration system according to claim 1, comprising a controller, a dust concentration sensor and a gas sensor, wherein the dust concentration sensor and the gas sensor are arranged in the closed cover, the dust concentration sensor and the gas sensor are electrically connected with the controller, and the controller is electrically connected with the circulation induced draft fan, the first valve and the second valve.
3. The dust, exhaust gas closed cycle ventilation and concentration system of claim 2, wherein the gas sensor is a VOC sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811565817.8A CN111346890A (en) | 2018-12-20 | 2018-12-20 | Dust and waste gas closed circulating ventilation concentration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811565817.8A CN111346890A (en) | 2018-12-20 | 2018-12-20 | Dust and waste gas closed circulating ventilation concentration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111346890A true CN111346890A (en) | 2020-06-30 |
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ID=71188310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811565817.8A Pending CN111346890A (en) | 2018-12-20 | 2018-12-20 | Dust and waste gas closed circulating ventilation concentration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111346890A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114146520A (en) * | 2021-10-20 | 2022-03-08 | 北京天玛智控科技股份有限公司 | Dust removal removes flavor system in protective casing production process |
| CN115569953A (en) * | 2022-09-30 | 2023-01-06 | 山东叶之梦智能科技有限公司 | Sanitary towel is suspended solid edulcoration device for production line |
| CN116890015A (en) * | 2023-09-04 | 2023-10-17 | 山东省十里香芝麻制品股份有限公司 | Sesame processing is with screening dust drainage device |
-
2018
- 2018-12-20 CN CN201811565817.8A patent/CN111346890A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114146520A (en) * | 2021-10-20 | 2022-03-08 | 北京天玛智控科技股份有限公司 | Dust removal removes flavor system in protective casing production process |
| CN115569953A (en) * | 2022-09-30 | 2023-01-06 | 山东叶之梦智能科技有限公司 | Sanitary towel is suspended solid edulcoration device for production line |
| CN116890015A (en) * | 2023-09-04 | 2023-10-17 | 山东省十里香芝麻制品股份有限公司 | Sesame processing is with screening dust drainage device |
| CN116890015B (en) * | 2023-09-04 | 2023-11-17 | 山东省十里香芝麻制品股份有限公司 | Sesame processing is with screening dust drainage device |
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