CN110538542A - RTO exhaust treatment system - Google Patents
RTO exhaust treatment system Download PDFInfo
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- CN110538542A CN110538542A CN201910786692.XA CN201910786692A CN110538542A CN 110538542 A CN110538542 A CN 110538542A CN 201910786692 A CN201910786692 A CN 201910786692A CN 110538542 A CN110538542 A CN 110538542A
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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
- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
- F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
- F23G7/066—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator
- F23G7/068—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator using regenerative heat recovery means
-
- 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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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses an RTO waste gas treatment system, which solves the problem of low waste gas treatment efficiency caused by low concentration of VOCs in waste gas sent into RTO equipment in the prior art, and has the technical key points that: an RTO waste gas treatment system comprises a waste gas pretreatment device, RTO treatment equipment and an exhaust passage which are connected in sequence, wherein the waste gas pretreatment device is connected with a waste gas pipe used for conveying waste gas; the waste gas pretreatment device is internally provided with an adsorption tank and a preheating tank for adsorbing VOCs in waste gas, the adsorption tank is connected with a waste gas pipe, the output end of the adsorption tank is connected with a clean gas pipe and a turbid gas pipe, the clean gas pipe is connected with the preheating tank and communicated to the input end of the adsorption tank from the output end of the preheating tank after being connected with the preheating tank, and a clean gas valve is arranged on the clean gas pipe between the adsorption tank and the preheating tank; the turbid air pipe is connected with RTO treatment equipment. Through above-mentioned scheme, make RTO treatment facility can handle the waste gas that concentration is higher, make the VOCs handling capacity under the same volume waste gas bigger, and then improve the treatment effeciency of waste gas.
Description
Technical Field
The invention relates to the technical field of waste gas treatment equipment, in particular to an RTO waste gas treatment system.
Background
With the rapid development of social economy and industrial development, environmental pollution treatment has become a worldwide problem because in the traditional manufacturing industry, many manufacturing processes generate volatile organic compound waste gas containing different components, the waste gas mainly comprises substances such as alkane, olefin, aromatic hydrocarbon, aldehyde or ketone, and the like, has special odor irritation, and part of the waste gas is listed as carcinogenic substances such as vinyl chloride, benzene, polycyclic aromatic hydrocarbon, and the like, and part of the substances in the waste gas also have a destructive effect on the ozone layer.
In the prior art, a Regenerative Thermal Oxidizer (RTO), an RTO (regenerative thermal oxidizer, RTO exhaust gas treatment system, etc.), an RTO exhaust gas treatment system, etc. are often used to treat exhaust gas. The principle is that organic matters (VOCs) in the waste gas are oxidized into corresponding carbon dioxide and water at high temperature, so that the waste gas is purified, heat released during decomposition of the waste gas is recovered, the three-chamber RTO waste gas decomposition efficiency reaches over 99 percent, and the heat recovery efficiency reaches over 95 percent. The RTO main structure comprises a combustion chamber, a regenerative chamber, a switching valve and the like. According to the actual requirements of customers, different heat energy recovery modes and switching valve modes are selected.
however, in actual treatment, due to the common characteristics of the waste gas containing VOCs: large air quantity and low concentration (direct discharge and standard exceeding). Aiming at the waste gas of VOCs with ultra-large air quantity and low concentration, the pure introduction of the waste gas of VOCs generated in the production process into the RIO equipment can consume a large amount of supplementary fuel or electric energy in the RTO, and is not economical.
Disclosure of Invention
the invention aims to provide an RTO waste gas treatment system, which aims to carry out concentration increasing treatment on VOCs waste gas before entering RTO treatment equipment, so that the treatment of the VOCs waste gas by the RTO equipment is more efficient and energy-saving.
The invention is realized by the following technical scheme:
An RTO waste gas treatment system comprises a waste gas pretreatment device, RTO treatment equipment and an exhaust passage which are connected in sequence, wherein the waste gas pretreatment device is connected with a waste gas pipe used for conveying waste gas;
The waste gas pretreatment device is internally provided with an adsorption tank and a preheating tank for adsorbing VOCs in waste gas, the adsorption tank is connected with the waste gas pipe, the output end of the adsorption tank is connected with a clean gas pipe and a turbid gas pipe, the clean gas pipe is connected with the preheating tank and communicated to the input end of the adsorption tank from the output end of the preheating tank after being connected with the preheating tank, and a clean gas valve is arranged on the clean gas pipe between the adsorption tank and the preheating tank; the turbid air pipe is connected with the RTO treatment equipment.
Through adopting above-mentioned technical scheme, waste gas gets into waste gas pretreatment device after, VOCs in it will deviate from under the adsorption tank effect and get into the adsorption tank and keep in temporarily, it is further got, clean waste gas after deviating from VOCs carries to preheat in the preheating cabinet through the clean trachea, and deliver to the adsorption tank in the preheating cabinet once more after the temperature risees in, because its higher temperature, make the interior VOCs gas of adsorption tank adsorbed in the desorption entering waste gas of follow in the adsorption tank fast, form the higher waste gas of concentration, finally, send out to RTO treatment facility through the turbid trachea on the adsorption tank and handle, and then make RTO treatment facility handle the higher waste gas of concentration, make the VOCs handling capacity under the same volume waste gas bigger, it is more thorough, and then improve the treatment efficiency of waste gas.
Further setting the following steps: a first adsorber and a second adsorber which are used for adsorbing VOCs in waste gas are arranged in the adsorption box, and the first adsorber and the second adsorber are respectively connected with the waste gas pipe and are respectively provided with a first control valve and a second control valve; the air purifying pipe comprises a first air purifying pipe and a second air purifying pipe, wherein the first air purifying pipe is sequentially connected with the first adsorber, the preheating tank and the second adsorber, and the second air purifying pipe is sequentially connected with the second adsorber, the preheating tank and the first adsorber; the foul gas pipe comprises a first foul gas pipe connecting the second adsorber with the RTO treatment device and a second foul gas pipe connecting the first adsorber with the RTO treatment device; the air purifying valve comprises a first air purifying valve arranged on two sections of first air purifying pipes between the first adsorber and the preheating tank and between the preheating tank and the RTO treatment equipment, and a second air purifying valve arranged on two sections of second air purifying pipes between the second adsorber and the preheating tank and between the preheating tank and the RTO treatment equipment; and a first turbid air valve and a second turbid air valve are respectively and correspondingly arranged on the first turbid air pipe and the second turbid air pipe.
By adopting the technical scheme, when only the first control valve, the first air purifying valve and the first turbid air valve are opened, the waste gas containing VOCs is sent into the first adsorber by the waste gas pipe, so that the VOCs are adsorbed in the first adsorber, the obtained purified gas is guided by the first air purifying pipe, preheated by the preheating box and enters the second adsorber, the VOCs in the second adsorber are desorbed, the concentration of the VOCs in the waste gas is increased, and finally the purified gas is sent into the RTO equipment by the aid of the first turbid air pipe, so that the VOCs of the waste gas sent into the first adsorber are temporarily stored in the first adsorber, and the VOCs in the second adsorber are brought back into the waste gas and are treated in the RTO equipment; similarly, when only the second control valve, the second clean air valve and the second turbid air valve are opened, the VOCs in the waste gas are temporarily stored in the second adsorber, and the VOCs stored in the first adsorber are taken out for treatment. Finally, each valve of accessible regulation and control realizes that the waste gas pipe can be sustainable to inputing low concentration waste gas in the adsorption tank to continuously send into high concentration waste gas to RTO equipment, improve exhaust-gas treatment efficiency greatly.
Further setting the following steps: VOCs concentration detectors are arranged on the first air purification pipe between the first adsorber and the preheating box and the second air purification pipe between the second adsorber and the preheating box.
Through adopting above-mentioned technical scheme, judge whether first adsorber or second adsorber reach the saturation to VOCs's adsorption effect with the help of VOCs concentration detector to change valve control after wherein adsorber saturation, make waste gas get into in another adsorber and carry out the desorption to the adsorber that saturates, realize that the circulation of single adsorber adsorbs the desorption, realize simultaneously that the continuation of low concentration waste gas is sent into and the continuation of high concentration waste gas is sent out.
Further setting the following steps: and a plurality of groups of activated carbon plates are arranged in the adsorber.
through adopting above-mentioned technical scheme, the multiunit active carbon board will effectively improve the adsorption efficiency to VOCs in the waste gas when waste gas gets into in the adsorber, can store more VOCs in the adsorber simultaneously, and then can desorb when the adsorber desorption and locate more VOCs, and the VOCs concentration is higher in the waste gas that makes to get into the RTO equipment.
further setting the following steps: and a filter screen for filtering large-particle impurities in the waste gas is arranged on the waste gas pipe.
Through adopting above-mentioned technical scheme, make waste gas can filter the large granule material before getting into the filter, avoid the active carbon in the adsorber to reduce adsorption efficiency at the influence of large granule material, prolong the single live time of active carbon.
Further setting the following steps: and the RTO treatment equipment adopts three chambers of RTO.
Through adopting above-mentioned technical scheme, three rooms RTO can realize continuous processing organic waste gas to can carry out continuous processing to the high concentration waste gas that continuously sends out from the adsorption box, avoid equipment pause.
Further setting the following steps: and a gas detector for detecting substances contained in the exhausted gas is arranged in the exhaust channel.
By adopting the technical scheme, whether purified gas discharged by the RTO equipment in the adsorption process reaches the standard or is abnormal can be detected by the aid of the gas detector, and excessive waste gas which does not meet the environmental requirements is prevented from being discharged after part of equipment is abnormal.
In conclusion, the beneficial technical effects of the invention are as follows:
(1) By means of the adsorption and high-temperature desorption characteristics of the adsorber, the concentration of VOCs in the waste gas is increased, so that the concentration of VOCs in the waste gas finally sent to RTO treatment equipment is higher, and the waste gas is quickly treated;
(2) The adsorption tank realizes continuously carrying out the absorption and desorption of VOCs in the adsorber with the help of two sets of adsorbers in term, guarantees that high concentration VOCs's waste gas can be sent out sustainably and get into RTO treatment facility, ensures overall system's exhaust-gas treatment efficiency.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a flow chart of exhaust gas when adsorption is performed by the first adsorber of the invention;
FIG. 3 is a flow chart of exhaust gas when adsorption is performed by the second adsorber of the invention.
reference numerals: 1. RTO treatment equipment; 2. an exhaust gas pipe; 3. an adsorption tank; 4. a preheating box; 5. a first adsorber; 6. a second adsorber; 7. a first control valve; 8. a second control valve; 9. a first gas cleaning pipe; 10. a first turbid air pipe; 11. a second gas cleaning pipe; 12. a second turbid air pipe; 13. a first gas purification valve; 14. a first turbid air valve; 15. a second gas purification valve; 16. a second turbid air valve; 17. VOCs concentration detector.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, an RTO exhaust gas treatment system disclosed in the present invention includes an exhaust gas pretreatment device, an RTO treatment apparatus 1, and an exhaust channel with a gas detector (not shown) therein, which are connected in sequence, the exhaust gas pretreatment device is connected to an exhaust gas pipe 2 for conveying exhaust gas, and a filter screen (not shown) for filtering large particle impurities is disposed in the exhaust gas pipe 2.
Referring to fig. 1, an adsorption tank 3 and a preheating tank 4 for adsorbing VOCs in the exhaust gas are provided in the exhaust gas pretreatment apparatus. Be provided with first adsorber 5 and second adsorber 6 that are used for absorbing interior VOCs of waste gas in the adsorption tank 3, all be provided with multiunit activated carbon plate in two adsorbers, realize absorbing the VOCs in the waste gas that gets into the adsorber. The first adsorber 5 and the second adsorber 6 are both connected by a pipeline exhaust gas pipe 2 and are respectively provided with a first control valve 7 and a second control valve 8.
Referring to fig. 1, a first clean gas pipe 9 is connected in sequence between the first adsorber 5, the preheating tank 4, and the second adsorber 6, and a first dirty gas pipe 10 connected to the RTO treatment facility 1 is connected to an output end of the second adsorber 6.
referring to fig. 1, a second clean gas pipe 11 is connected in sequence between the second adsorber 6 and the preheating tank 4 and the first adsorber 5, and a second dirty gas pipe 12 connected to the RTO treatment facility 1 is connected to the output end of the first adsorber 5.
Referring to fig. 2, first air purification valves 13 are provided in the two first air purification pipes 9 between the first adsorber 5 and the preheating tank 4 and between the preheating tank 4 and the RTO treatment facility 1, and first turbidity air valves 14 are provided in the first turbidity air pipes 10.
referring to fig. 3, the second clean gas pipe 11 between the second adsorber 6 and the preheating tank 4 and between the preheating tank 4 and the RTO treatment facility 1 is provided with a second clean gas valve 15, and the second dirty gas pipe 12 is provided with a second dirty gas valve 16.
Referring to fig. 1, a first clean air pipe 9 between the first adsorber 5 and the preheating tank 4 and a second clean air pipe 11 between the second adsorber 6 and the preheating tank 4 are provided with VOCs concentration detectors 17.
When only the first control valve 7, the first air purification valve 13 and the first turbid air valve 14 are opened, the exhaust gas pipe 2 sends exhaust gas containing VOCs into the first adsorber 5, so that the VOCs are adsorbed in the first adsorber 5, the obtained purified gas is guided by the first air purification pipe 9, passes through the preheating box 4 to be preheated, enters the second adsorber 6, desorbs the VOCs in the second adsorber 6, so that the concentration of the VOCs in the exhaust gas is increased, and is finally sent into the RTO equipment through the first turbid air pipe 10, so that the VOCs of the exhaust gas sent into the first adsorber 5 are temporarily stored in the first adsorber 5, the VOCs in the second adsorber 6 are brought back into the exhaust gas and are sent into the RTO equipment for treatment, when the VOCs concentration detector 17 on the first air purification pipe 9 detects that the content level of the VOCs in the first air purification pipe 9 is high, the fact that the VOCs in the first adsorber 5 are adsorbed and reach a saturated state is indicated, and at the moment, the first control valve 7 is closed, The first air purge valve 13 and the first turbidity air valve 14 open the second control valve 8, the second air purge valve 15, and the second turbidity air.
similarly, when only the second control valve 8, the second air purifying valve 15 and the second foul air are opened, the VOCs in the exhaust gas are temporarily stored in the second adsorber 6, and the VOCs stored in the first adsorber 5 are taken out for treatment. Finally, each valve of accessible regulation and control realizes that exhaust pipe 2 can be sustainable to inputing low concentration waste gas in adsorption tank 3 to continuously send into high concentration waste gas to RTO equipment, improve exhaust treatment efficiency greatly. And in order to enable the RTO equipment to continuously treat the high-concentration VOCs waste gas continuously sent out by the adsorption box 3 through the two turbid gas pipes, three chambers of RTO are selected on the RTO equipment.
The implementation principle and the beneficial effects of the embodiment are as follows: waste gas is being sent into absorption case 3 in the back, the switching of the different valves of horizontal control of accessible VOCs concentration detector 17, and then make first adsorber 5 and the switching of second adsorber 6 carry out VOCs's absorption in the desorption, and can take out its interior adsorbed VOCs with the help of gas behind the VOCs of an adsorber entering into another adsorber after preheating in preheating chamber 4, and then realize the waste gas of the high concentration VOCs of continuous discharge, finally enter into and carry out high-efficient processing in RTO treatment facility 1.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (7)
1. An RTO exhaust treatment system, characterized in that: the device comprises a waste gas pretreatment device, RTO treatment equipment (1) and an exhaust passage which are connected in sequence, wherein the waste gas pretreatment device is connected with a waste gas pipe (2) for conveying waste gas;
an adsorption tank (3) and a preheating tank (4) for adsorbing VOCs in the waste gas are arranged in the waste gas pretreatment device, the adsorption tank (3) is connected with the waste gas pipe (2), the output end of the adsorption tank (3) is connected with a clean gas pipe and a turbid gas pipe, the clean gas pipe is connected with the preheating tank (4) and communicated to the input end of the adsorption tank (3) from the output end of the preheating tank (4) after being connected with the preheating tank (4), and a clean gas valve is arranged on the clean gas pipe between the adsorption tank (3) and the preheating tank (4); the turbid air pipe is connected with the RTO treatment equipment (1).
2. The RTO exhaust gas treatment system of claim 1, wherein: a first adsorber (5) and a second adsorber (6) for adsorbing VOCs in the waste gas are arranged in the adsorption box (3), the first adsorber (5) and the second adsorber (6) are respectively connected with the waste gas pipe (2), and are respectively provided with a first control valve (7) and a second control valve (8);
The air purifying pipe comprises a first air purifying pipe (9) which is sequentially connected with the first adsorber (5), the preheating tank (4) and the second adsorber (6), and a second air purifying pipe (11) which is sequentially connected with the second adsorber (6), the preheating tank (4) and the first adsorber (5); the turbid gas pipe comprises a first turbid gas pipe (10) connecting the second adsorber (6) with the RTO treatment plant (1) and a second turbid gas pipe (12) connecting the first adsorber (5) with the RTO treatment plant (1);
The gas purification valves comprise first gas purification valves (13) arranged on two sections of first gas purification pipes (9) between the first adsorber (5) and the preheating tank (4) and between the preheating tank (4) and the RTO treatment equipment (1), and second gas purification valves (15) arranged on two sections of second gas purification pipes (11) between the second adsorber (6) and the preheating tank (4) and between the preheating tank (4) and the RTO treatment equipment (1);
The first turbid air pipe (10) and the second turbid air pipe (12) are respectively provided with a first turbid air valve (14) and a second turbid air valve (16) correspondingly.
3. The RTO exhaust gas treatment system of claim 2, wherein: VOCs concentration detectors (17) are arranged on the first air purification pipe (9) between the first adsorber (5) and the preheating tank (4) and on the second air purification pipe (11) between the second adsorber (6) and the preheating tank (4).
4. The RTO exhaust gas treatment system of claim 2, wherein: and a plurality of groups of activated carbon plates are arranged in the adsorber.
5. The RTO exhaust gas treatment system of claim 1, wherein: and a filter screen for filtering large-particle impurities in the waste gas is arranged on the waste gas pipe (2).
6. The RTO exhaust gas treatment system of claim 1, wherein: and the RTO treatment equipment (1) adopts three-chamber RTO.
7. The RTO exhaust gas treatment system of claim 1, wherein: and a gas detector for detecting substances contained in the exhausted gas is arranged in the exhaust channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910786692.XA CN110538542A (en) | 2019-08-24 | 2019-08-24 | RTO exhaust treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910786692.XA CN110538542A (en) | 2019-08-24 | 2019-08-24 | RTO exhaust treatment system |
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| CN110538542A true CN110538542A (en) | 2019-12-06 |
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| CN201910786692.XA Pending CN110538542A (en) | 2019-08-24 | 2019-08-24 | RTO exhaust treatment system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT507601A2 (en) * | 2008-12-02 | 2010-06-15 | Porzellanfabrik Frauenthal Gmb | REGENERATIVE THERMAL OXIDATION SYSTEM |
| TW201600163A (en) * | 2014-06-19 | 2016-01-01 | Eastern Rainbow Engineering Co Ltd | Processor for volatile organic compound |
| CN206168167U (en) * | 2016-08-31 | 2017-05-17 | 广东汕樟轻工机械股份有限公司 | Package printing industry VOCs process exhaust's treatment facility |
| CN107774093A (en) * | 2016-08-31 | 2018-03-09 | 广东汕樟轻工机械股份有限公司 | The processing equipment of packages printing industry VOCs technology waste gas |
| CN108579320A (en) * | 2018-04-20 | 2018-09-28 | 盐城中创环保科技有限公司 | A kind of concentration-arrangement for catalytic purification, the system and method for low-concentration organic exhaust gas |
-
2019
- 2019-08-24 CN CN201910786692.XA patent/CN110538542A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT507601A2 (en) * | 2008-12-02 | 2010-06-15 | Porzellanfabrik Frauenthal Gmb | REGENERATIVE THERMAL OXIDATION SYSTEM |
| TW201600163A (en) * | 2014-06-19 | 2016-01-01 | Eastern Rainbow Engineering Co Ltd | Processor for volatile organic compound |
| CN206168167U (en) * | 2016-08-31 | 2017-05-17 | 广东汕樟轻工机械股份有限公司 | Package printing industry VOCs process exhaust's treatment facility |
| CN107774093A (en) * | 2016-08-31 | 2018-03-09 | 广东汕樟轻工机械股份有限公司 | The processing equipment of packages printing industry VOCs technology waste gas |
| CN108579320A (en) * | 2018-04-20 | 2018-09-28 | 盐城中创环保科技有限公司 | A kind of concentration-arrangement for catalytic purification, the system and method for low-concentration organic exhaust gas |
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Application publication date: 20191206 |
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