CN110567263A - volatile organic compound source control and terminal treatment system - Google Patents
volatile organic compound source control and terminal treatment system Download PDFInfo
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- CN110567263A CN110567263A CN201910876433.6A CN201910876433A CN110567263A CN 110567263 A CN110567263 A CN 110567263A CN 201910876433 A CN201910876433 A CN 201910876433A CN 110567263 A CN110567263 A CN 110567263A
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- air
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- proportional valve
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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
- B01D53/06—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 with moving adsorbents, e.g. rotating beds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
- F26B21/04—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/005—Treatment of dryer exhaust gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/14—Gaseous waste or fumes
Abstract
A volatile organic compound source control and tail end treatment system comprises a source emission reduction control system, a tail end treatment system and an airflow tissue treatment system, wherein the source emission reduction control system comprises a hot air circulation drying system, a fresh air collecting and preheating system and an exhaust system, wherein the hot air circulation drying system comprises an air inlet machine, an electric heater, an air inlet valve, an oven pressure sensor, an electric return air proportional valve, an electric fresh air proportional valve, an electric exhaust valve and a temperature sensor; the concentration device adopted by the airflow organization treatment system is a zeolite concentration rotating wheel for treatment, and the zeolite concentration rotating wheel can concentrate waste gas with large air quantity and low concentration into waste gas with small air quantity and high concentration, so that the construction cost and the operation energy consumption of the tail end treatment system can be greatly reduced; the terminal treatment system adopts a rotary RTO treatment device, the treatment effect is high, the occupied area is small, and the system runs stably.
Description
Technical Field
the invention relates to the field of waste gas treatment and prevention, in particular to a volatile organic compound source control and tail end treatment system.
Background
Along with the promotion of the country to the volatile organic compound treatment process, more and more people realize that the key point of VOC treatment is three points: first, the source control VOC volatilize, and second come the process and control the diffusion of unorganized air current, and third then need strengthen terminal improvement dynamics. At present, many enterprises are often with these three key points separately management and control, manufacturing enterprise is responsible for the source, manufacturing enterprise or ventilation collection enterprise are responsible for the process and are controlled, and the end is administered and then is handed the improvement enterprise, this can ignore interlocking relevant link undoubtedly, not only increase and reduce discharging treatment cost, and three operation control flow becomes complicated, this is unfavorable for the treatment of volatile organic compounds very much, traditional printing, spraying, trade such as compound and coating, often need utilize the dry product of hot-blast source of certain temperature, hot-blast direct emission after the drying, and whole workshop unorganized air current is collected in addition, the total waste gas amount of wind of emission is big, the concentration is low, be unfavorable for end treatment very much. Therefore, the invention provides a new type of source control, process control and high-efficiency terminal treatment system, which is very beneficial to the waste gas treatment effect and the energy-saving and consumption-reducing level of related industries.
the present invention is an improvement to solve the above problems.
Disclosure of Invention
the invention aims to provide a volatile organic compound source control and terminal treatment system which can reduce the output power of an electric heater in a hot air circulation drying system, improve the working environment, reduce VOC pollution, greatly reduce the construction cost and the operation energy consumption of a terminal treatment system, occupy small area and stably operate the system.
the technical scheme adopted by the invention for solving the technical problem is as follows:
A volatile organic compound source control and tail end treatment system comprises a source emission reduction control system, a tail end treatment system and an airflow tissue treatment system, wherein the source emission reduction control system comprises a hot air circulation drying system, a fresh air collecting and preheating system and an exhaust system, wherein the hot air circulation drying system comprises an air inlet machine, an electric heater, an air inlet valve, an oven pressure sensor, an electric return air proportional valve, an electric fresh air proportional valve, an electric exhaust valve and a temperature sensor;
the fresh air collecting and preheating system consists of a collecting port, a fresh air fan, a collecting pipeline, a plate heat exchanger and a heat returning fan;
The exhaust system comprises an exhaust fan, an LEL concentration detector and an exhaust pipeline pressure sensor, and the LEL concentration detector can monitor the exhaust waste gas concentration at any time to ensure that the source emission reduction and concentration increase are in a safe range;
the tail end treatment system comprises a pretreatment device, a system fan, a rotary RTO waste gas treatment device and a waste heat recovery system, wherein the rotary RTO waste gas treatment device comprises an air inlet, a purification air outlet, a purging port, a driving device, a regenerator, a combustion chamber, a combustor and a high-temperature heat taking port, the system is used for VOC treatment, and the rotary RTO waste gas treatment device can reduce the configuration power and the operation output power of the hot air circulation drying system 11;
The circulating air quantity proportion of the hot air circulating drying system is jointly adjusted through an electric fresh air proportional valve and an electric return air proportional valve, and the electric fresh air proportional valve and the electric return air proportional valve can be interlocked with a temperature sensor for adjustment;
A temperature sensor in the hot air circulation drying system and an electric heater are subjected to interlocking control, so that a system is ensured to need a heat source;
The airflow tissue treatment system comprises a fresh air preheating proportional valve, a bypass switch valve, a concentration rotating wheel, a desorption fan, an adsorption fan, a temperature sensor, a desorption gas cooling valve and a desorption proportional valve;
Further, at least one collecting port is arranged;
furthermore, the exhaust fan is respectively interlocked with the exhaust pipeline pressure sensor and the oven pressure sensor, and the hot air overflow of the oven and the escape of the pipeline waste gas are reduced by ensuring the micro-negative pressure state of the exhaust pipeline and the oven;
The heat source of the desorption gas of the concentration rotating wheel is from a waste heat recovery system, so that the energy consumption of transportation output can be greatly reduced;
specifically, concentrated runner is located the desorption district, and this desorption district is provided with desorption temperature sensor, desorption temperature sensor can carry out interlocking accuse temperature with desorption gas cooling valve.
the invention has the beneficial effects that: the arrangement of the waste heat recovery system enables fresh air supplemented by the hot air drying system to be preheated in advance through a waste heat recovery heat source, so that the output power of an electric heater in the hot air circulation drying system can be reduced; the system can control the escaping unorganized air flow in the process by means of increasing low-level air exhaust, blocking organized air flow and the like, improve the working environment and reduce VOC pollution; the concentration device adopted by the airflow organization treatment system is a zeolite concentration rotating wheel for treatment, and the zeolite concentration rotating wheel can concentrate waste gas with large air quantity and low concentration into waste gas with small air quantity and high concentration, so that the construction cost and the operation energy consumption of the tail end treatment system can be greatly reduced; the terminal treatment system adopts a rotary RTO treatment device, the treatment effect is high, the occupied area is small, and the system runs stably.
Drawings
Fig. 1 is a schematic structural diagram of a source control and end treatment system for volatile organic compounds according to the present invention.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easy to understand, the invention is further described with reference to the figures and the specific embodiments.
Referring to fig. 1, the volatile organic compound source control and terminal treatment system comprises a source emission reduction control system 1, an airflow organization treatment system 3 and a terminal treatment system 2, wherein the source emission reduction control system 1 is a necessary device for achieving a source emission reduction effect, most of heat flows are recycled through backflow at the source emission reduction, the emission reduction purpose is achieved, meanwhile, exhaust gas is recycled through continuous backflow of hot air to increase the concentration of the exhaust gas, the concentration increasing purpose is achieved, and the construction cost and the operation energy consumption of rear-end treatment equipment are reduced.
the hot air circulation drying system 11 comprises an oven 115, an air inlet machine 112, an electric heater 111, an air inlet valve 113, a temperature sensor 114, a pressure sensor 116, an electric return air proportional valve 117, a fresh air proportional valve 118 and an electric exhaust valve 119;
the air inlet machine 112 is set to be at a fixed frequency, and provides hot air with a certain air quantity for the oven 115, and the air quantity is jointly adjusted and controlled by the reflux proportional valve 117 and the fresh air proportional valve 118 to ensure the heat source requirement of the product; meanwhile, the opening sizes of the 117 and 118 valves are interlocked with the opening size of the 114 valve to prevent the temperature of the hot air from being ultrahigh;
The temperature of the inlet of the oven 115 is monitored by a temperature sensor 114, and is interlocked with the electric heater 111 to supplement the heat required by hot air in time, so that the temperature of the inlet of the oven 115 is ensured;
All the control data need to be determined according to actual conditions, and backflow air comes from the oven to exhaust air, and accounts for about 80-90% of the exhaust air quantity of the oven; the preheated fresh air comes from a part of low-level exhaust air and organized airflow, and the specific temperature and air volume of the oven are required to be adjusted according to the production state of equipment of an owner;
The fresh air collecting and preheating system comprises at least one partition collecting port 121, at least one low-level air outlet 122, a fresh air fan 123, a collecting pipeline 124, a two-stage plate type heat exchanger 25, a fresh air proportional valve 32, a fresh air bypass valve 31 and a heat return fan 39, and is used for collecting workshop airflow organization waste gas through process control, so that unnecessary VOC is prevented from escaping and polluting the environment.
the fresh air fan 123 is used for collecting waste gas collected by the low-position air outlet 122 and the partition collecting port 121; the low-level exhaust outlet 122 collects volatile organic compounds escaping from the vicinity of the solvent tank; the cut-off collection ports 121 collect the unorganized air flow at the cut-off of the work area.
in the two-stage plate heat exchanger 25, one stage is used for preheating and supplementing fresh air in the hot air circulation drying system, the other stage is used for preheating desorbed gas for the barrel-type rotating wheel 33 in the bypass system 3, and the heat exchange area needs to be determined according to the conversion of an actual demand heat source.
Fresh air in the hot air circulation drying system 11 can be preheated by utilizing waste heat of 23.
The exhaust system includes a waste collection duct 124, an exhaust fan 127, an LEL concentration detector 125, and an exhaust duct pressure sensor 126.
The waste gas collected by the waste gas collecting pipeline 124 comes from the waste gas at the discharge port of the hot air circulation drying system 11;
The pressure sensor 126 is used for controlling the negative pressure state of the exhaust duct and is interlocked with the exhaust fan 127.
the LEL concentration detector 125 is arranged at the front end of the exhaust fan 126 and is used for ensuring that the exhaust gas concentration of an exhaust pipeline is lower than 25% of the lower explosion limit value, ensuring the safety of 'air reduction and concentration', and simultaneously ensuring the amount of the residual solvent of return air without influencing the product quality of a production line;
The frequency setting of the exhaust fan 127 can be controlled by the starting current of each oven 115, and the ovens 127 and 116 are interlocked, so that the micro-negative pressure state of the ovens is ensured, and the escape of pollutants is prevented.
The unorganized air flow is separated by a closed partition, and low-concentration waste gas is collected and treated by an air flow organization, namely an air flow organization treatment system 3.
The gas flow organization treatment system 3 comprises a fresh air preheating proportional valve 32, a bypass switch valve 31, a cylinder type concentration rotating wheel 33, a desorption fan 34, an adsorption fan 35, a temperature sensor 36, a desorption gas cooling valve 37 and a desorption proportional valve 38.
According to the whole system arrangement structure, the concentration device adopted by the airflow organization treatment system 3 is the zeolite concentration rotating wheel 33 for treatment, the zeolite concentration rotating wheel 33 can concentrate waste gas with large air volume and low concentration into waste gas with small air volume and high concentration, and the construction cost and the operation energy consumption of the tail end treatment system 2 can be greatly reduced.
The desorption gas heat source is from the waste heat utilization in the high-efficiency tail end treatment system 2, and the desorption gas in the zeolite concentration rotating wheel 33 is preheated through the two-stage plate heat exchanger 25.
the desorption gas temperature is jointly adjusted through a desorption gas cooling valve 37 and a desorption proportional valve 38, and the proportion of the two valves and a temperature sensor 36 are controlled in an interlocking mode, so that the normal heat value requirement of the desorption gas is guaranteed.
And the waste gas collected by the exhaust pipeline and the waste gas treated by the airflow organization treatment system 3 are uniformly treated by the high-efficiency tail end treatment system 2.
The high-efficiency terminal treatment system 2 comprises a pretreatment device 22, a system fan 21, a rotary RTO waste gas treatment device 23 and a waste heat recovery system 25.
the rotary RTO waste gas treatment device 23 comprises an air inlet 231, a purified air outlet 232, a purging port 233, a driving device 234, a heat storage chamber 235, a combustion chamber 236, a burner 237 and a high-temperature heat taking port 238, and the system is used for VOC treatment.
The combustion chamber 236 is a place for oxidizing and decomposing the waste gas, and the waste gas enters the combustion chamber 236 for treatment after being preheated by the regenerator filled in the regenerator 235. The combustion chamber 236 usually has an oxidation temperature of 800 ℃, the high-temperature alarm is set to 950 ℃, the requirement of high-concentration waste gas incineration can be met, redundant heat of the system is discharged from the high-temperature heat taking port 238, a main body high-temperature source is used for recovering waste heat of the system, the redundant heat can be discharged from another high-temperature discharge port, and the air volume of the high-temperature source can be controlled in an interlocking manner through the high-temperature valves 241 and 242.
the arrangement of the waste heat recovery system enables fresh air supplemented by the hot air drying system to be preheated in advance through a waste heat recovery heat source, so that the output power of an electric heater in the hot air circulation drying system can be reduced; the system can control the escaping unorganized air flow in the process by means of increasing low-level air exhaust, blocking organized air flow and the like, improve the working environment and reduce VOC pollution; the concentration device adopted by the airflow organization treatment system is a zeolite concentration rotating wheel for treatment, and the zeolite concentration rotating wheel can concentrate waste gas with large air quantity and low concentration into waste gas with small air quantity and high concentration, so that the construction cost and the operation energy consumption of the tail end treatment system can be greatly reduced; the terminal treatment system adopts a rotary RTO treatment device, the treatment effect is high, the occupied area is small, and the system runs stably.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described, which are described in the specification and illustrated only to illustrate the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a volatile organic compounds source control and terminal treatment system, includes source emission reduction control system (1), terminal treatment system (2) and air current tissue treatment system (3), its characterized in that:
the source emission reduction control system (1) comprises a hot air circulation drying system (11), a fresh air collecting and preheating system and an exhaust system, wherein the hot air circulation drying system (11) comprises an air inlet fan (112), an electric heater (111), an air inlet valve (113), an oven (115), an oven pressure sensor (116), an electric return air proportional valve (117), an electric fresh air proportional valve (118), an electric exhaust valve (119) and a temperature sensor (114);
the fresh air collecting and preheating system consists of a collecting port (121), a fresh air fan (123), a collecting pipeline (124), a plate heat exchanger (25) and a heat return fan (39);
The exhaust system comprises an exhaust fan (127), an LEL concentration detector (125) and an exhaust pipeline pressure sensor (126);
The tail end treatment system (2) comprises a pretreatment device (22), a system fan (21), a rotary RTO waste gas treatment device (23) and a waste heat recovery system (25), wherein the rotary RTO waste gas treatment device (23) comprises an air inlet (231), a purification air outlet (232), a purging port (233), a driving device (234), a heat storage chamber (235), a combustion chamber (236), a combustor (237) and a high-temperature heat taking port (238);
The circulating air quantity proportion of the hot air circulating drying system (11) is jointly adjusted through an electric fresh air proportional valve (118) and an electric return air proportional valve (117), and the electric fresh air proportional valve (118) and the electric return air proportional valve (117) can be interlocked with a temperature sensor (114) for adjustment;
a temperature sensor (114) in the hot air circulation drying system (11) and an electric heater (111) are controlled in an interlocking manner;
the gas flow organization treatment system (3) comprises a fresh air preheating proportional valve (32), a bypass switch valve (31), a concentration rotating wheel (33), a desorption fan (34), an adsorption fan (35), a temperature sensor (36), a desorption gas cooling valve (37) and a desorption proportional valve (38).
2. A volatile organic source control and terminal abatement system according to claim 1, wherein at least one of the collection ports (121) is provided.
3. The voc source control and end treatment system according to claim 1, wherein the exhaust blower (127) is interlocked with an exhaust duct pressure sensor (126) and an oven pressure sensor (116), respectively.
4. a voc source head control and end treatment system according to claim 1, wherein the desorption gas heat source of the concentrating wheel (33) is from a waste heat recovery system (25).
5. the voc source head control and end treatment system according to claim 4, wherein the concentrating wheel (33) is located in a desorption zone, the desorption zone is provided with a desorption temperature sensor (36), and the desorption temperature sensor (36) can perform temperature control in an interlocking manner with a desorption gas cooling valve (37).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910876433.6A CN110567263A (en) | 2019-09-17 | 2019-09-17 | volatile organic compound source control and terminal treatment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910876433.6A CN110567263A (en) | 2019-09-17 | 2019-09-17 | volatile organic compound source control and terminal treatment system |
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| CN110567263A true CN110567263A (en) | 2019-12-13 |
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Cited By (5)
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| CN111070512A (en) * | 2019-12-17 | 2020-04-28 | 大连橡胶塑料机械有限公司 | Separation and purification device for volatile substances in thin film |
| CN111720842A (en) * | 2020-06-28 | 2020-09-29 | 上海兰宝环保科技有限公司 | Hot air drying and recovery type thermal incineration combined system |
| CN112844005A (en) * | 2020-12-31 | 2021-05-28 | 山西清环能创环境科技有限公司 | Comprehensive, efficient and intelligent treatment process for toxic and malodorous gas |
| CN113069883A (en) * | 2021-04-12 | 2021-07-06 | 江南造船(集团)有限责任公司 | VOCs treatment device and method in ship construction |
| WO2023227167A1 (en) * | 2022-05-24 | 2023-11-30 | Dürr Systems Ag | Conversion kit for a treatment system and method for converting a treatment system |
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Cited By (5)
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| CN111720842A (en) * | 2020-06-28 | 2020-09-29 | 上海兰宝环保科技有限公司 | Hot air drying and recovery type thermal incineration combined system |
| CN112844005A (en) * | 2020-12-31 | 2021-05-28 | 山西清环能创环境科技有限公司 | Comprehensive, efficient and intelligent treatment process for toxic and malodorous gas |
| CN113069883A (en) * | 2021-04-12 | 2021-07-06 | 江南造船(集团)有限责任公司 | VOCs treatment device and method in ship construction |
| WO2023227167A1 (en) * | 2022-05-24 | 2023-11-30 | Dürr Systems Ag | Conversion kit for a treatment system and method for converting a treatment system |
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