CN219984341U - Purifying device for treating pharmaceutical and chemical tail gas - Google Patents
Purifying device for treating pharmaceutical and chemical tail gas Download PDFInfo
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- CN219984341U CN219984341U CN202321266248.3U CN202321266248U CN219984341U CN 219984341 U CN219984341 U CN 219984341U CN 202321266248 U CN202321266248 U CN 202321266248U CN 219984341 U CN219984341 U CN 219984341U
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Landscapes
- Treating Waste Gases (AREA)
Abstract
The purifying device comprises a front-end pretreatment system, an RTO purifying system, a tail gas post-purifying system, and a pipe valve and a meter which are connected with each other; the front-end preprocessing system comprises: an alkaline washing tower, a water washing tower, a demister and an exhaust gas mixing box; the RTO purification system comprises a front end fan, a rear section fan, an RTO body, a blowing fan and a high Wen Xiewen valve; the tail gas post-purification system comprises a quenching tower, an alkaline washing tower and an exhaust chimney.
Description
Technical Field
The utility model relates to the technical field of treatment of organic waste gas in pharmaceutical and chemical industry, in particular to a purification device for treating tail gas in pharmaceutical and chemical industry.
Background
The tail gas emission in the pharmaceutical and chemical industries is characterized by multiple waste gas types, large concentration fluctuation and certain corrosive components; the treatment mode adopted is currently most adopted by regenerative oxidation (RTO);
the conventional treatment waste gas directly enters the RTO device, halogen and other corrosive mediums in the waste gas are easy to corrode RTO equipment after being combusted, and the service life of the RTO equipment is reduced;
because of the corrosive components contained in the tail gas, corrosive acid can be generated after incineration, and the RTO lower chamber body and the rear end pipe are corroded, so that the service lives of equipment and the pipe can be reduced.
Disclosure of Invention
In view of the defects of the prior art, aiming at the characteristics of waste gas in medicine and chemical industry, the utility model aims to provide a purification device for treating the tail gas in medicine and chemical industry, and the purification technology for purifying the tail gas discharged from the medicine and chemical industry is applied, and the technology and the device can effectively prolong the service life of equipment and pipes, and can carry out high-efficiency purification treatment on the tail gas so as to ensure that the tail gas reaches the emission standard; the utility model can effectively reduce the erosion effect of corrosive substances on equipment, prolong the service life of the equipment, and can carry out high-efficiency stable treatment on the concentration of the fluctuation.
The present utility model aims to solve one of the problems in the background art.
The technical scheme adopted by the utility model is as follows: to achieve the above and other related objects, the present utility model provides a purification apparatus for treating pharmaceutical and chemical tail gas;
the purifying device comprises a front-end pretreatment system, an RTO purifying system, a tail gas post-purifying system, and a pipe valve and a meter which are connected with each other;
the front-end preprocessing system comprises: an alkaline washing tower, a water washing tower, a demister and an exhaust gas mixing box;
the RTO purification system comprises a front end fan, a rear section fan, an RTO body, a blowing fan and a high Wen Xiewen valve;
the tail gas post-purification system comprises a quenching tower, an alkaline washing tower and an exhaust chimney.
The waste gas mixing box is used for treating waste gas in the industrial production process, and has the main functions of mixing the waste gas with fresh air, so as to achieve the purposes of reducing the emission concentration of the waste gas, reducing the air pollution, improving the production efficiency of a factory, saving energy and the like;
the waste gas mixing box consists of an air inlet pipe, an air mixing chamber, an air outlet pipe, a fan and the like; the waste gas entering the air mixing chamber is introduced through the air inlet pipe and then mixed with fresh air to form mixed gas, and finally the mixed gas is discharged by the fan; in the air mixing chamber, the waste gas and the fresh air are mixed in a rotary or forced entering mode, so that the waste gas is effectively diluted and purified; the waste gas mixing box has the advantages of simple structure, stable operation, low operation and maintenance cost and the like.
The alkaline washing tower, the water washing tower and the demister are used for removing pollutants in the waste gas and improving the quality of waste gas emission;
the alkaline tower is a chemical absorption device for treating waste gas containing acid gas, such as sulfur dioxide, hydrogen chloride and the like; the method has the main effects that acid waste gas is treated in a manner of spraying alkali liquor, so that acidic substances in the waste gas and the alkali liquor are subjected to chemical reaction, and are converted into corresponding salts or water, and the purified waste gas is discharged into the atmosphere; the alkaline washing tower has the advantages of high efficiency, stability, simple operation and the like;
a water scrubber is a physical absorption device for treating waste gas containing Volatile Organic Compounds (VOCs), such as benzene, toluene, etc.; the method comprises the steps of treating waste gas in a spray water mode, and physically adsorbing, washing and separating pollutants in the waste gas and water, so that the purified waste gas is discharged into the atmosphere; the water scrubber has the advantages of high purification efficiency, simple operation and the like;
a mist eliminator is a gas treatment device for removing suspended droplets or solid particles in exhaust gas, thereby reducing or eliminating haze in the exhaust gas; demisters generally include cyclone type demisters, filter type demisters, wet type demisters, and the like; the main function of the device is to separate liquid drops or particles in the waste gas from the air flow by different principles and modes so as to purify the waste gas; the demister has the advantages of high efficiency, simple structure and the like;
RTO is an abbreviation for english Regenerative Thermal Oxidizer, i.e. regenerative thermal oxidizer; is a high-efficiency waste gas treatment device, and is mainly used for treating industrial waste gas containing organic waste gas, such as waste gas in the industries of coating, printing, chemical industry and the like;
the RTO waste gas treatment device mainly comprises a heat exchanger, a fuel supply device, a heating medium circulation device, a reactor, a control system and the like; firstly, the waste gas enters an RTO reactor after pretreatment (such as dust removal, dehumidification and the like) and reacts with high-temperature oxygen, and organic matters are oxidized and decomposed into harmless substances such as water, carbon dioxide and the like at high temperature; the treated waste gas is subjected to waste heat recovery through a heat exchanger, and meanwhile, the heat medium is heated, so that the waste gas is used for waste gas treatment again, and a regeneration cycle is formed, thereby realizing efficient waste gas treatment and energy utilization;
compared with the traditional thermal oxidation technology, the RTO waste gas treatment equipment has the advantages of high waste gas purification efficiency, low energy consumption, stable operation, low maintenance cost and the like.
The purging fan is used for removing impurities such as dust, sediment and the like on the surface of the equipment and in the pipeline, and purging the impurities on the surface of the equipment and in the pipeline to the equipment or concentrated waste gas treatment equipment for treatment by generating high-speed airflow; the blowing fan can adopt a centrifugal or axial flow structure, and has the characteristics of large air quantity, high pressure, good wear resistance, low noise and the like;
the high Wen Xiewen valve is a valve for controlling the flow of high temperature gas; the valve is used for opening and closing a high-temperature gas pipeline, and can realize control of gas flow in a high-temperature state; the high Wen Xiewen valve generally adopts a metal sealing or ceramic sealing structure, and has the characteristics of good high temperature tolerance, good sealing performance, long service life and the like;
the front end fan is a draught fan, which sucks external air into the equipment;
the rear-section fan is an exhaust fan, and the treated waste gas inside the equipment is discharged out of the equipment or is sent into a waste gas treatment system for treatment.
The quench tower is used for rapidly cooling and condensing pollutants in chemical waste gas; spray water or other cooling medium is adopted to cool the high-temperature waste gas below the dew point rapidly, so that pollutants such as water vapor, acid gas and the like in the waste gas are condensed into liquid or solid so as to carry out the next treatment;
the alkaline washing tower is used for removing acid gas in the chemical waste gas; an alkaline solution (such as NaOH solution) is used as a detergent to absorb SOx, HCl and other acid gases in the waste gas, so that the purpose of purifying the waste gas is achieved;
the outer smoke exhaust chimney is used for discharging the treated chemical waste gas into the atmosphere; is a vertical cylindrical structure, the top of which is open, and the bottom of which is connected with an exhaust gas treatment system; the outer smoke exhaust chimney has good ventilation and diffusion effects, and can rapidly discharge the treated waste gas into the atmosphere, so that the environmental cleanliness and the safety of human health are ensured;
the technical scheme of the utility model also comprises the following technical characteristics:
preferably, the high-temperature air mixing box is connected with the air inlet and the air port of the hearth Gao Wenwei and is used for mixing high-temperature tail gas of the hearth with inlet air.
Preferably, a temperature control device is arranged between the high Wen Xiewen valve and the hearth temperature, and after the hearth temperature exceeds a set value, the temperature control device is used for starting protection and starting hearth temperature unloading.
Preferably, a temperature control feedback control device is arranged on the quenching tower, and the quenching tower is used for quenching the waste gas, so that the temperature of the tail gas entering the rear-end alkaline washing tower is less than or equal to 60 ℃.
Preferably, the front-end pretreatment equipment is made of FRP/PP/stainless steel and the like, and the lower room of the RTO body is made of 2205; the quenching tower is made of 2205 material; the alkaline washing tower is made of FRP material; the fan is made of FRP.
Preferably, the front-end pretreatment system comprises a dosing system; a dosing system is an apparatus for dosing a chemical agent into an exhaust treatment system; it is generally composed of a medicament storage tank, a medicament pump, a pipeline, a control system and the like;
the chemical agent is used for each link in the chemical waste gas treatment, for example, in the waste gas purification process, the dosing system can be used for dosing the chemical agents such as a desulfurizing agent, a denitrifying agent and the like so as to remove pollutants such as SOx, NOx and the like in the waste gas; in the waste gas treatment process, the dosing system can also be used for adding chemical agents such as an oxidant, a reducing agent, a catalyst and the like so as to increase the efficiency and the thoroughly degree of waste gas treatment;
the operation process of the dosing system is usually controlled by an automatic control system, and quantitative, timing and fixed-point control of dosing of the medicament can be realized, so that the stability and the purification effect of the waste gas treatment system are improved.
Preferably, a flame arrester is arranged between the front-end pretreatment system and the RTO purification system;
the flame arrestor is a safety device in a chemical waste gas treatment system and is used for preventing fire and explosion accidents in the waste gas treatment system; flame arresters consist of a filler between two or more metal grids, such as clay, asbestos, etc.; when the waste gas passes through the flame arrester, the filler can absorb flame and sparks in the waste gas and extinguish the flame and sparks, so that the flame and sparks are prevented from further spreading; in addition, the flame arrestor can prevent flame in the waste gas from reversely entering the waste gas treatment equipment, so that the safety of the equipment and operators is protected;
flame arresters are arranged at the inlet and the outlet of the waste gas treatment system to prevent fire and explosion accidents in the waste gas treatment process; the fire arrestor is matched with other safety equipment such as fire valves, pressure gauges, liquid level gauges and the like to form a complete safety protection system.
The purification process mainly comprises the following components:
(1) A front-end pretreatment system; (2) an RTO decontamination system; (3) an exhaust gas post-purification system;
preferably, each component part is composed of a plurality of subsystems, and the specific steps are as follows:
(1) The front-end preprocessing system comprises: an alkaline washing tower; a water washing tower; a demister; an exhaust gas mixing box; (2) the RTO purification system includes a front end blower; a rear fan; an RTO body; purging the fan; a high Wen Xiewen valve; (3) an exhaust gas post-purification system comprising: a quenching tower; an alkaline washing tower; and (5) discharging the chimney.
The front-end pretreatment system comprises an alkaline washing tower, a water washing tower, a demister and an exhaust gas mixing box; the alkaline washing tower, the water washing tower and the demister mainly remove soluble VOCs in the tail gas, so that the load and corrosion of rear-end equipment are reduced;
the waste gas mixing box of the front-end pretreatment system can heat the washed tail gas, reduce the relative humidity of the waste gas and reduce dew point corrosion;
the RTO purification system comprises a front end fan and a rear end fan, so that the pressure born by the pipe is reduced, and the service life of the pipe is prolonged; the variable frequency adjustment of the fan saves energy and is economical;
the RTO purification system adopts a blowing fan to carry out positive pressure blowing, so that the condition that the tail gas of a chimney does not reach the standard is ensured when a waste gas valve is switched;
the high Wen Xiewen valve is interlocked with the RTO temperature, when the temperature exceeds a certain interval range, the corresponding opening can be opened, and the overheat of a hearth is avoided;
the temperature of the tail gas can be effectively reduced by the quenching tower, the damage of the high temperature of the tail gas to the rear alkaline washing tower is avoided, and the temperature of the tail gas is ensured to be lower than 60 ℃;
the components are connected into a whole by corresponding pipes, and measures such as corresponding dilution, emission, emergency cutting and the like can be carried out on the tail gas entering the system according to the detection instrument.
The utility model has the following beneficial effects:
the utility model carries out high-efficiency pretreatment on the waste gas, and carries out high-efficiency purification on the tail gas, thereby ensuring that the tail gas reaches the standard and is discharged. When the pretreated tail gas enters the RTO purification system and the tail gas post-purification system, the erosion effect of corrosive substances on equipment can be reduced, and the service life is prolonged;
the beneficial effects are as follows:
(1) The alkaline washing tower, the water washing tower, the demister and the waste gas mixing box in the front-end pretreatment system can carry out high-efficiency pretreatment on the tail gas, and have the effects of reducing the load of soluble VOC, removing dust, reducing the relative humidity of the waste gas and the like, so that when the tail gas enters the rear-end RTO equipment, the corrosion of the equipment and the impact of the load are reduced;
(2) The RTO purification system can correspondingly open the corresponding valve group according to the indication of the detection instrument, so that the tail gas purification is ensured to be in a relatively stable environment and high-efficiency standard treatment;
(3) The positive pressure blowing is adopted for the blowing fan, so that the occurrence of concentration peaks which do not reach standards at the chimney is avoided;
(4) The quenching equipment can reduce the temperature of the tail gas, reduce the influence of high-temperature flue gas on the back-end equipment, and reduce the service life;
(5) The exhaust gas mixing box can automatically adjust the mixing range according to the temperature detection requirement, so that the humidity is ensured to be in a certain category;
in general, the utility model utilizes RTO purification technology, forms multiple protection safety measures by means of the device of the utility model, ensures the stable and efficient purification of the waste gas, and effectively reduces the occurrence of dew point corrosion of the waste gas;
the front end of the utility model is provided with the alkaline washing tower, the water washing tower and the high-temperature mixing box, so that waste gas can be pretreated, corrosive medium which is easy to dissolve in water is removed, the relative humidity of the waste gas can be reduced, and the corrosion of RTO equipment is reduced.
Drawings
FIG. 1 is a schematic diagram of a system for treating pharmaceutical and chemical tail gas purification device according to the present utility model;
FIG. 2 is a block diagram and schematic illustrations of divisions (1) to (8) of a purification apparatus for treating pharmaceutical and chemical tail gas according to the present utility model;
FIG. 3 is a schematic view (1) of a part of a purification apparatus for treating pharmaceutical and chemical exhaust gas according to the present utility model;
FIG. 4 is a schematic view (2) of a purifying apparatus for treating pharmaceutical and chemical tail gas according to the present utility model;
FIG. 5 is a schematic view (3) of a part of a purification apparatus for treating pharmaceutical and chemical exhaust gas according to the present utility model;
FIG. 6 is a schematic view (4) of a part of a purification apparatus for treating pharmaceutical and chemical exhaust gas according to the present utility model;
FIG. 7 is a schematic view (5) of a part of a purification apparatus for treating pharmaceutical and chemical exhaust gas according to the present utility model;
FIG. 8 is a schematic view (6) of a part of a purification apparatus for treating pharmaceutical and chemical exhaust gas according to the present utility model;
FIG. 9 is a schematic view (7) of a part of a purification apparatus for treating pharmaceutical and chemical exhaust gas according to the present utility model;
FIG. 10 is a schematic view (8) of a part of a purification apparatus for treating pharmaceutical and chemical exhaust gas according to the present utility model;
Detailed Description
The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present utility model and are not intended to be limiting.
In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
Examples
1-10, a purification device for treating pharmaceutical and chemical tail gas, wherein the purification device comprises a front-end pretreatment system, an RTO purification system, a tail gas post-purification system, and a pipe valve and a meter which are connected among the front-end pretreatment system, the RTO purification system and the tail gas post-purification system;
the front-end preprocessing system comprises: an alkaline washing tower, a water washing tower, a demister and an exhaust gas mixing box;
the RTO purification system comprises a front end fan, a rear section fan, an RTO body, a blowing fan and a high Wen Xiewen valve;
the tail gas post-purification system comprises a quenching tower, an alkaline washing tower and an exhaust chimney.
In the present utility model, fig. 1 is a schematic diagram of a system, fig. 2 is a pipeline diagram of an overall structure, fig. 2 cannot show details due to the fact that details are larger, and fig. 3-10 are schematic diagrams of parts (1) to (8) by dividing the marks of fig. 2.
Specifically, the high-temperature air mixing box is connected with the air inlet and the air port of the hearth Gao Wenwei and is used for mixing high-temperature tail gas of the hearth with air inlet.
Specifically, a temperature control device is arranged between the high Wen Xiewen valve and the hearth temperature, and after the hearth temperature exceeds a set value, the temperature control device is used for starting protection and starting the hearth to discharge the temperature.
Specifically, a temperature control feedback control device is arranged on the quenching tower, and the quenching tower is used for quenching the waste gas, so that the temperature of the tail gas entering the rear-end alkaline washing tower is less than or equal to 60 ℃.
Specifically, the front-end pretreatment equipment is made of FRP/PP/stainless steel and the like, and the lower room of the RTO body is made of 2205; the quenching tower is made of 2205 material; the alkaline washing tower is made of FRP material; the fan is made of FRP.
Specifically, the front-end pretreatment system comprises a dosing system.
Specifically, a flame arrester is arranged between the front-end pretreatment system and the RTO purification system.
In general, the utility model has the characteristics that when the utility model is implemented, the utility model comprises an alkaline washing tower, a water washing tower, a demister, an exhaust gas mixing box, a front-stage fan, a rear-stage fan, an RTO body, a flame arrester, a quenching tower, an alkaline washing tower, a high Wen Xiewen valve, a chimney and corresponding valve instruments, the exhaust gas firstly passes through the alkaline washing tower, the water washing tower and the demister, the exhaust gas is subjected to the reduction of the exhaust gas load, the dust removal and the clear water removal operation, and enters rear-end equipment; when the waste gas passes through the waste gas mixing box, the high-temperature flue gas of the hearth is mixed with the waste gas, the temperature of the waste gas is provided according to the indication of the detection instrument, the relative humidity of the tail gas is reduced, and dew point corrosion is avoided; the tail gas continuously passes through the flame arrester and then enters RTO equipment, and is subjected to thermal oxidation in a hearth to be oxidized into water, carbon dioxide and acidic substances; after the tail gas passes through the quenching tower, the temperature of the tail gas is less than 60 ℃ and enters an alkaline washing tower, and the acid tail gas is purified.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.
Claims (6)
1. The purifying device for treating the pharmaceutical and chemical tail gas is characterized by comprising a front-end pretreatment system, an RTO purifying system, a tail gas post-purifying system, and a pipe valve and a meter which are connected among the front-end pretreatment system, the RTO purifying system and the tail gas post-purifying system;
the front-end preprocessing system comprises: an alkaline washing tower, a water washing tower, a demister and an exhaust gas mixing box;
the RTO purification system comprises a front end fan, a rear section fan, an RTO body, a blowing fan and a high Wen Xiewen valve;
the tail gas post-purification system comprises a quenching tower, an alkaline washing tower and an exhaust chimney.
2. A purification apparatus for treating pharmaceutical waste gas as claimed in claim 1, wherein the high temperature air mixing box is connected to the air inlet and the air inlet of the furnace Gao Wenwei for mixing the high temperature waste gas of the furnace with the inlet air.
3. The purification device for treating pharmaceutical and chemical tail gas according to claim 1, wherein a temperature control device is arranged between the high Wen Xiewen valve and the hearth temperature, and after the hearth temperature exceeds a set value, the purification device is used for starting protection and starting hearth temperature unloading.
4. The purification device for treating pharmaceutical and chemical tail gas according to claim 1, wherein a temperature control feedback control device is arranged on the quenching tower, and the quenching tower is used for quenching waste gas, so that the temperature of the tail gas entering the rear alkaline washing tower is less than or equal to 60 ℃.
5. The purification apparatus for treating pharmaceutical-chemical tail gas as recited in claim 1, wherein the front-end pretreatment system comprises a dosing system.
6. The purification device for treating pharmaceutical and chemical tail gas according to claim 1, wherein a flame arrester is arranged between the front-end pretreatment system and the RTO purification system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321266248.3U CN219984341U (en) | 2023-05-23 | 2023-05-23 | Purifying device for treating pharmaceutical and chemical tail gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321266248.3U CN219984341U (en) | 2023-05-23 | 2023-05-23 | Purifying device for treating pharmaceutical and chemical tail gas |
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