CN209865669U - Traditional Chinese medicine plaster production waste gas treatment system - Google Patents
Traditional Chinese medicine plaster production waste gas treatment system Download PDFInfo
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- CN209865669U CN209865669U CN201920586879.0U CN201920586879U CN209865669U CN 209865669 U CN209865669 U CN 209865669U CN 201920586879 U CN201920586879 U CN 201920586879U CN 209865669 U CN209865669 U CN 209865669U
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Abstract
The utility model discloses a traditional chinese medicine plaster production exhaust-gas treatment system, including condensation heat exchanger, alkali spray column, surfactant spray column, sour spray column, plant liquid spray column, defogging mechanism, electrostatic oil smoke purification mechanism, photocatalytic oxidation device, controlling means and frequency conversion draught fan, condensation heat exchanger's import links to each other with the waste gas pipeline who is used for collecting the on-the-spot waste gas of production, condensation heat exchanger's export is connected to the import of surfactant through alkali spray column, and the export of surfactant spray column is connected to the import of plant liquid spray column through sour spray column, and the export of plant liquid spray column is connected to photocatalytic oxidation device's import after defogging mechanism, electrostatic oil smoke purification mechanism in proper order, and photocatalytic oxidation device's export is connected to the chimney via the frequency conversion draught fan. The remarkable effects are as follows: the existing equipment is taken into consideration, so that the investment cost is reduced; the equipment has safe and reliable operation, convenient use and simple and convenient management and maintenance.
Description
Technical Field
The utility model relates to medicine enterprise exhaust-gas treatment technical field, concretely relates to traditional chinese medicine plaster waste gas treatment system.
Background
In a certain traditional Chinese medicine plaster production process, a large amount of oil fume which is high in temperature and concentration and contains particles needs to be treated. The oil fume is a large amount of thermal oxidation decomposition products generated under the high temperature condition in the production process of the traditional Chinese medicine plaster, and is accompanied with a large amount of particulate matters. Fatty acids, esters, heterocyclic compounds, etc. are produced during thermal oxidation, and have a strong pungent taste. Therefore, as the oil fume pollutants generated in the production process of the traditional Chinese medicine plaster are complex and the temperature of the waste gas is high, the treatment difficulty is increased sharply compared with the waste gas in other environments.
For oil fume purification, the oil fume purification treatment technical methods in the market at present include a catalyst combustion method, an activated carbon adsorption method, a mechanical separation method, a fabric filtration method, a wet treatment method and an electrostatic treatment method. Among them, the electrostatic treatment method is widely used because of its advantages of large treatment air volume, small pressure loss, being capable of operating under high humidity, satisfying the purification requirement with one-pass removal rate, large particle diameter range for effective removal, and the like. However, in actual operation, the electrostatic oil fume purification equipment is easy to generate sparks, and if the electrostatic oil fume purification equipment is directly used for purifying high-temperature oil fume, the oil fume containing volatile organic compounds and a large amount of smoke and dust exhaust gas are easy to deflagrate after meeting sparks, and the like, so that safety accidents are easy to cause.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide a middle-sized and middle-sized electric kettleThe ointment production waste gas treatment system is safe to operate, does not generate sparks, can realize automatic dosing control and fan frequency conversion control, finally ensures that the smoke and oil waste gas reaches the requirements of oil and smoke emission standards of the food and drink industry, the comprehensive emission standards of atmospheric pollutants and the emission standards of malodorous pollutants after being treated, and the outlet emission concentration reaches the following levels: oil fume is less than 2.0mg/m3Lead and compounds thereof < 0.9mg/m3And no obvious peculiar smell.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a traditional chinese medicine plaster waste gas processing system, its key lies in, includes:
the condensing heat exchanger is used for reducing the temperature of oil smoke waste gas from a production site and cooling and removing oil smoke or organic matters with lower boiling points;
the alkali spray tower is used for removing particulate matters and part of oil smoke in the waste gas treated by the condensing heat exchanger;
the surfactant spray tower is used for washing and removing most of oil-containing substances in the waste gas treated by the alkali spray tower;
the acid spray tower is used for further removing the particulate matters in the waste gas treated by the surfactant spray tower;
the plant liquid spray tower is used for removing peculiar smell in the waste gas treated by the acid spray tower;
the demisting mechanism is used for removing liquid drops carried in the waste gas treated by the plant liquid spray tower to realize gas-liquid separation;
the electrostatic oil fume purification mechanism is used for removing oil mist drops and oil stain particles in the waste gas treated by the demisting mechanism under the action of the high-voltage electric field and removing partial smell in the waste gas under the action of the high-voltage electric field;
the photocatalytic oxidation device is used for removing malodorous gas in the waste gas treated by the electrostatic oil fume purification mechanism;
and a control device for controlling the working state of each device.
Furthermore, the alkali spray tower, the surfactant spray tower, the acid spray tower and the plant liquid spray tower are all provided with dosing mechanisms, and the control device respectively controls the working state of each dosing mechanism through the detected pH value or concentration value of the medicament in each tower.
Furthermore, the condensing heat exchanger adopts a finned heat exchanger, and the heat exchange area of the finned heat exchanger is 5m2The material is stainless steel, and the circulating water flow is 20m3/h。
Furthermore, the outlet of the photocatalytic oxidation device is also connected with a variable frequency induced draft fan, and the variable frequency induced draft fan is in point connection with the control device and is used for realizing the control of the flow of the waste gas.
Furthermore, the defogging mechanism adopts a two-stage defogger.
Furthermore, the electrostatic oil fume purification mechanism adopts a two-stage suction type electrostatic oil fume purifier.
Furthermore, the plant liquid spray tower adopts an industrial oil stain cleaning agent with the concentration of 5% to treat the waste gas after the alkali spraying treatment.
The utility model discloses a show the effect and be: the system is matched with production equipment of a pharmaceutical factory, and the existing equipment is taken into consideration, so that the investment cost is reduced according to local conditions; the equipment is safe and reliable in operation, realizes automatic dosing control and fan frequency conversion control through the control device, and is convenient to use and simple and convenient to manage and maintain; the waste gas generated in the production process of the traditional Chinese medicine plaster reaches the emission standard after being purified by the system.
Drawings
Fig. 1 is a connection diagram of the present invention.
Detailed Description
The following provides a more detailed description of the embodiments and the operation of the present invention with reference to the accompanying drawings.
Fig. 1 is a schematic view of the exhaust gas treatment system for a traditional Chinese medicine plaster of the present embodiment. As shown in figure 1, the system comprises a condensing heat exchanger 2, an alkali spray tower 3, a surfactant spray tower 4, an acid spray tower 5, a plant liquid spray tower 6, a demisting mechanism 7, an electrostatic oil fume purification mechanism 8, a photocatalytic oxidation device 9, a control device 13 and a variable-frequency induced draft fan 10, the inlet of the condensing heat exchanger 2 is connected with an exhaust gas pipeline 1 for collecting the exhaust gas of the production site, the outlet of the condensing heat exchanger 2 is connected to the inlet of a surfactant spray tower 4 through an alkali spray tower 3, the outlet of the surfactant spray tower 4 is connected to the inlet of a plant liquid spray tower 6 through an acid spray tower 5, the export of plant liquid spray column 6 is connected to the import of photocatalytic oxidation device 9 behind defogging mechanism 7, the static oil smoke purification mechanism 8 in proper order, and the exhaust waste gas of photocatalytic oxidation device 9's export is delivered to chimney 11 via frequency conversion draught fan 10 and is carried out discharge to reach standard. Wherein:
the oil smoke waste gas G generated in the traditional Chinese medicine production field is treated by the waste gas pipeline 10Collecting, then guiding into the finned condensing heat exchanger 2 to cool the waste gas, and cooling and removing the oil smoke or organic matters with lower boiling points. The heat exchange area of the heat exchanger is 5m2The material is stainless steel, and the circulating water flow is 20m3/h。
Exhaust gas G discharged from the condensing heat exchanger 21Is led into a filler type alkali spray tower 3 to remove lead compounds and oil smoke in the waste gas; preferably, the present embodiment adopts 10% NaOH solution as absorbent, and the process has the advantages of completing dust removal and absorption in the same equipment, and simultaneously can remove oil due to the use of alkali solution, and is particularly suitable for the industry of oil contained in particles. The process has the advantages of simple equipment, convenient operation and higher purification efficiency.
Exhaust gas G from the alkali spray tower 32Introducing into a filler type surfactant spray tower 4, adding surfactant into the surfactant spray tower 4 to wash oil-containing substances, dissolving in water, wherein the surfactant is 5% lauryl alcohol phosphate, and the dosage is matched according to the oil-containing substance. Water consumption: evaporation capacity 0.2m3/d。
Exhaust gas G discharged from the surfactant spray tower 43Leading the waste gas into a filler type acid spray tower 5, and removing lead compounds and oil smoke in the waste gas; preferably, a 5% dilute aqueous acetic acid solution is used as the absorbent.
The acetic acid absorption method has the advantages of simple device, convenient operation and high purification efficiency, and can effectively remove particles in the oil fume waste gas and volatile organic compounds which are easy to react with acid. The defects are that the absorbent (acetic acid) has strong corrosivity, equipment needs to adopt anticorrosion measures, and hard PP or anticorrosion linings can be adopted.
Exhaust gas G discharged from the acid spray tower 54Leading the waste gas into a plant liquid spray tower 6 for removing various peculiar smells in the waste gas; the plant liquid spray tower adopts an industrial oil stain cleaning agent with the concentration of 5% to treat waste gas.
Waste gas G discharged from the plant liquid spray tower 65And the waste gas is guided into the demisting mechanism 7, liquid drops carried in the waste gas are removed, and gas-liquid separation is realized, so that the gas and the liquid can be purified by adopting different treatment modes. The demister 7 used in this example is a two-stage demister and mainly comprises a plate and a support device. The plate sheet is made of stainless steel material. When the waste gas containing the mist flows through the demister at a certain speed, the mist collides with the corrugated plate due to the inertial impact of the gas, and the collected liquid drops are large enough that the gravity generated by the liquid drops exceeds the resultant force of the rising force of the gas and the surface tension of the liquid, and the liquid drops are separated from the surface of the corrugated plate. The multi-fold of defroster wave plate has increased the chance that the mist foam is caught to the structure, and the mist foam that is not got rid of is caught the collection through the same effect in next turning, and the repeated action like this to defogging efficiency has been improved greatly. The exhaust gas is substantially free of entrainment after passing through the corrugated plate mist eliminator. The flue gas passes through the crooked passageway of defroster, separates out the liquid drop of smuggleing secretly in the air current under the effect of inertial force and gravity for waste gas discharges after reaching the defogging requirement.
Exhaust gas G after gas-liquid separation by the defogging mechanism 76The oil is introduced into the electrostatic oil smoke purification mechanism 8, in the example, the electrostatic oil smoke purification mechanism 8 adopts a two-stage fan to suck the electrostatic oil smoke purifier, and part of larger oil mist droplets and oil dirt particles in the waste gas are captured on the flow equalization plate due to mechanical collision and obstruction. When the airflow enters a high-voltage electrostatic field, under the action of the high-voltage electrostatic field, the oil fume gas is ionized, and most of the oil fume is degraded and carbonized; a small part of tiny oil particles move to the positive and negative plates of the electric field under the action of the electric field force of the adsorption electric field and the airflow and are collected on the platesThe oil flows to an oil collecting tray under the action of self gravity and is discharged through an oil discharge channel, and the remaining micron-sized oil mist is degraded into carbon dioxide and water by an electric field, so that clean air is discharged finally; meanwhile, under the action of the high-voltage generator, the air in the electric field generates ozone, and most of odor in the smoke is removed.
Exhaust gas G discharged through the electrostatic oily fume purification mechanism 87Leading the waste gas into a photocatalytic oxidation device 9 to remove malodorous gas in the waste gas after electrostatic purification; the photocatalytic oxidation device 9 in this embodiment is preferably a UV photocatalytic waste gas deodorization device, which can efficiently remove Volatile Organic Compounds (VOC), inorganic substances, hydrogen sulfide, ammonia gas, thiols and other main pollutants in the lampblack, and various malodorous smells, the deodorization efficiency can reach up to 99% or more, and the deodorization effect greatly exceeds the emission standard of malodorous pollutants issued in 1993 (GB 13554-93). The malodorous gas is deodorized, decomposed and purified by the equipment without adding any substance and only by arranging a corresponding exhaust pipeline and exhaust power, and the malodorous gas does not need to be added with any substance to participate in chemical reaction. The device has strong adaptability, can adapt to deodorization and purification treatment of substances with high concentration, large air volume and different malodorous gases, can continuously work for 24 hours every day, and has stable and reliable operation. The ion deodorization equipment has no mechanical action and no noise, does not need special management and daily maintenance, only needs to carry out periodic inspection, has low energy consumption (only consumes about 0.2 ℃ of electric energy when processing 1000 cubic meters per hour), and has extremely low wind resistance<50pa, can practice thrift a large amount of power energy consumptions of airing exhaust. The malodorous gas does not need special pretreatment such as heating, humidifying and the like, the temperature of the working environment of the equipment is between 30 ℃ below zero and 95 ℃, the humidity is between 30 percent and 98 percent, and the PH value is between 2 and 13. The equipment occupies small area and has light dead weight. The photocatalytic oxidation deodorization and photocatalytic deodorization equipment is suitable for special conditions of compact arrangement, narrow site and the like.
The UV photocatalysis waste gas deodorization equipment utilizes a specially-made high-energy high-ozone UV light beam to irradiate a peaceful catalyst, and cracks malodorous gas such as: nitrogen, trimethylamine, hydrogen sulfide, methylthio hydrogen, methyl mercaptan, dimethyl disulfide, carbon disulfide, styrene, sulfides H2S, VOCs, molecular chain structures of benzene, toluene and xylene, so that organic or inorganic high-molecular malodorous compound molecular chains are degraded and converted into low-molecular compounds such as CO2, H2O and the like under the irradiation of high-energy ultraviolet light beams. Oxygen molecules in air are decomposed by high-energy ozone UV light beams to generate free oxygen, namely active oxygen, and the oxygen molecules are combined because positive and negative electrons carried by the free oxygen are not balanced, so that ozone is generated. UV + O2 → O-O (active oxygen) O + O2 → O3 (ozone), it is known that ozone has strong oxidation effect on organic matters, and has instant effect of removing malodorous gas and other irritating peculiar smell.
Exhaust gas G treated by the photocatalytic oxidation device 98Sending the waste gas to a chimney 11 through a variable-frequency induced draft fan 10 and then discharging;
in the processing of each apparatus described above, the operation state of each device is controlled by the control device 13. For example, the chemical feeding mechanisms 12 are arranged in the alkali spray tower 3, the surfactant spray tower 4, the acid spray tower 5 and the plant liquid spray tower 6, and the control device 13 controls the working state of each chemical feeding mechanism 12 respectively through the detected pH value or concentration value of the chemicals in each tower; in addition, the operation frequency of the variable frequency induced draft fan 10 is controlled according to the exhaust gas flow rate achieved by collecting air pressure, air flow rate and the like by the control device 13.
The system strictly executes relevant national environmental protection regulations and relevant emission standards, adopts scientifically applicable treatment methods and equipment, and has the advantages that the equipment selected in the treatment process is matched with production equipment of a pharmaceutical factory, so that the normal operation of the production equipment of the pharmaceutical factory is not influenced, the original facilities are taken into consideration, the investment cost can be effectively reduced according to local conditions; the equipment is safe and reliable in operation and convenient to use, and reaches the most advanced level of domestic similar devices; reliable elements are selected, so that the running cost of the device is reduced; the equipment design adopts the miniaturization principle; the treatment process which is mature in technology, advanced in process and easy to operate and manage is adopted, the system is simple and convenient to operate, manage and maintain, the engineering investment is saved, and the operation cost is low; the operation and maintenance are simple and convenient, namely, on the design of the process flow and the control mode, the operation management work can be finished only by the concurrent management personnel; waste residues, waste water and the like generated in the treatment process are fully considered, and secondary pollution is effectively avoided.
The technical scheme provided by the utility model is introduced in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (7)
1. A traditional Chinese medicine plaster production waste gas treatment system is characterized by comprising:
the condensing heat exchanger is used for reducing the temperature of oil smoke waste gas from a production site and cooling and removing oil smoke or organic matters with lower boiling points;
the alkali spray tower is used for removing particulate matters and part of oil smoke in the waste gas treated by the condensing heat exchanger;
the surfactant spray tower is used for washing and removing most of oil-containing substances in the waste gas treated by the alkali spray tower;
the acid spray tower is used for further removing the particulate matters in the waste gas treated by the surfactant spray tower;
the plant liquid spray tower is used for removing peculiar smell in the waste gas treated by the acid spray tower;
the demisting mechanism is used for removing liquid drops carried in the waste gas treated by the plant liquid spray tower to realize gas-liquid separation;
the electrostatic oil fume purification mechanism is used for removing oil mist drops and oil stain particles in the waste gas treated by the demisting mechanism under the action of the high-voltage electric field and removing partial smell in the waste gas under the action of the high-voltage electric field;
the photocatalytic oxidation device is used for removing malodorous gas in the waste gas treated by the electrostatic oil fume purification mechanism;
and a control device for controlling the working state of each device.
2. The waste gas treatment system for producing traditional Chinese medicine plaster according to claim 1, which is characterized in that: the alkali spray tower, the surfactant spray tower, the acid spray tower and the plant liquid spray tower are all provided with dosing mechanisms, and the control device respectively controls the working state of each dosing mechanism through the detected pH value or concentration value of the medicament in each tower.
3. The waste gas treatment system for producing traditional Chinese medicine plaster according to claim 1, which is characterized in that: the condensing heat exchanger adopts a finned heat exchanger, the heat exchange area of the finned heat exchanger is 5 square meters, the finned heat exchanger is made of stainless steel, and the circulating water flow is 20m3/h。
4. The waste gas treatment system for producing traditional Chinese medicine plaster according to claim 1, which is characterized in that: the outlet of the photocatalytic oxidation device is also connected with a variable-frequency draught fan, and the variable-frequency draught fan is in point connection with the control device and is used for realizing the control of the flow of the waste gas.
5. The waste gas treatment system for producing traditional Chinese medicine plaster according to claim 1, which is characterized in that: and the demisting mechanism adopts a two-stage demister.
6. The waste gas treatment system for producing traditional Chinese medicine plaster according to claim 1, which is characterized in that: the electrostatic oil fume purification mechanism adopts a two-stage suction type electrostatic oil fume purifier.
7. The waste gas treatment system for producing traditional Chinese medicine plaster according to claim 1, which is characterized in that: the plant liquid spray tower adopts an industrial oil stain cleaning agent with the concentration of 5% to treat the waste gas after the alkali spray treatment.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116585838A (en) * | 2023-06-26 | 2023-08-15 | 艾易西(中国)环保科技有限公司 | VOCs waste gas treatment method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116585838A (en) * | 2023-06-26 | 2023-08-15 | 艾易西(中国)环保科技有限公司 | VOCs waste gas treatment method |
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