CN211051246U - Safe and efficient VOCs catalytic oxidation treatment device - Google Patents
Safe and efficient VOCs catalytic oxidation treatment device Download PDFInfo
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- CN211051246U CN211051246U CN201921418690.7U CN201921418690U CN211051246U CN 211051246 U CN211051246 U CN 211051246U CN 201921418690 U CN201921418690 U CN 201921418690U CN 211051246 U CN211051246 U CN 211051246U
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Abstract
The utility model discloses a safe efficient VOCs catalytic oxidation processing apparatus, processing apparatus includes: an air intake system, a catalytic system in communication with the air intake system, and a safety system: the security system includes at least one of: the first security system: the first safety system is an adsorption device which is arranged between the air inlet system and the catalytic system and is used for adjusting the concentration of VOCs; the second security system: the second safety system is a first exhaust system which is arranged at an outlet of the air intake system and communicated with the air intake system. The utility model discloses a setting up of safety coefficient solves the too high potential safety hazard in the twinkling of an eye of concentration, and prevents that the air current is biased temperature through the distribution of catalyst in the catalytic system for VOCs catalytic system safety and stability high efficiency operation ensures discharge to reach standard.
Description
Technical Field
The utility model belongs to the technical field of the environmental protection, especially, relate to a safe efficient VOCs catalytic oxidation processing apparatus.
Background
Organic waste gases, also known as VOCs (volatile Organic Compounds), refer to any Organic compound that can participate in atmospheric photochemical reactions. Has great influence on human health. When VOCs in a room reaches a certain concentration, people can feel headache, nausea, vomiting, hypodynamia and the like in a short time, and can be tetany and coma in severe cases, and the liver, the kidney, the brain and the nervous system of people can be injured, so that serious consequences such as hypomnesis are caused.
The end-point control techniques for VOCs include two categories, namely recovery techniques and destruction techniques. The recovery technology is a method for enriching and separating organic pollutants by physical methods, changing temperature and pressure or adopting methods such as selective adsorbents and selective permeable membranes, and mainly comprises the technologies of condensation, absorption, adsorption, membrane separation and the like. The recovered volatile organic compounds can be directly or simply purified and then returned to the process for reuse, so that the consumption of raw materials is reduced. The destruction technology is a method for converting organic compounds into non-toxic and inorganic small molecular compounds such as carbon dioxide, water and the like by using heat, light, catalysts or microorganisms and the like through chemical or biochemical reaction, and mainly comprises the technologies of high-temperature incineration, catalytic combustion, biological oxidation, low-temperature plasma destruction, photocatalytic oxidation and the like.
The destroying technology is various and is mainly to convert organic matters into H2O and CO2The catalytic oxidation technology is used as one of incineration technologies, is relatively low in ignition temperature, does not generate open fire, and is relatively safer than the thermal oxidation technology, the requirement on the concentration of inlet gas is still strict, if the 6.4.5.1 in the environmental protection standard ' air pollution abatement engineering technical guideline ' HJ2000-2010 clearly indicates that the concentration of organic waste gas entering a catalytic combustion device is controlled below 25% of the lower explosion limit of the catalytic combustion device ', the control concentration of a mixed organic compound is calculated and checked according to the concentration proportion of different compounds and the lower explosion limit of the mixed organic compound ', and the control concentration of the mixed organic compound is calculated and checked according to the concentration proportion of different compounds and the lower explosion limit of the mixed organic waste gas, if the environmental protection standard ' catalytic explosion method industrial organic waste gas engineering specification ' HJ 7-2013 indicates that the concentration of organic waste gas entering the catalytic combustion device is lower than 25% of the lower explosion limit of the mixed organic compound ', the lower explosion limit of the mixed organic waste gas is calculated to be lower than 25% of the lower explosion limit of the mixed organic compound, if the concentration of the waste gas in the waste gas is higher than 25%, the lower explosion limit of the mixed organic compound, the mixed organic waste gas is calculated according to the lower explosion limit of the mixed explosive limit of the mixed organic compound, the mixed gas, the lower explosion limit of the mixed organic compound is 35min < × 25%, the Pm < the mixed organic compound, the lower explosion limit of the mixed organic compound, the mixed gas dilution limit of the mixed organic compound, wherein the mixed organic compound is calculated and the lower explosion limit of the mixed organic compound is calculated and:
Pm＝(P1+P2+…+Pn)/(V1/P1+V2/P2+…+Vn/Pn)
in the formula:
Pm-lower limit value of explosion limit of mixed gas,%;
P1，P2，…，Pn-mixing organic waste gasesLower limit value of explosion limit,%;
V1，V2，…，Vn-mixing the volume percentages of the components of the organic waste gas,%
n-the number of organic compounds contained in the mixed organic exhaust gas ".
In the practical process, the volume percentages of the organic matters contained in the VOCs are all changed, so Pe is generally taken as the lower limit value (%) of the explosion limit of the most explosive component, that is, the lowest value of the explosion limit lower limit is the lower limit of the explosion limit of the mixture, and the explosion limit and the combustion temperature rise of common organic matters are as follows:
as can be seen from the above table, the lower explosion limit of common organic substances is basically 40-80 g/m3The lower limit of the explosion limit is 25% in the range of 10 to 20g/m3The lower limit value of the explosion limit of the mixture can be 10g/m3. The concentration is 1g/m3Combustion of organic matter to H2O and CO2The temperature rise brought to VOCs is basically about 30 ℃ and 10g/m3The temperature rise of the catalyst is about 300 ℃, so that the fluctuation of the inlet gas concentration has great influence on the temperature of the catalytic reaction chamber for the catalytic oxidation process of flameless combustion, and the high concentration (more than 10 g/m)3) The organic matter intake not only can cause the high temperature rise of the reaction chamber, but also can bring about potential safety hazard. In actual conditions, the condition of the gas source is unstable, and the concentration may fluctuate instantaneously to 1/4 which is the lower limit of the explosion, for example, if the pretreatment device fails, or the production process fluctuates greatly, the concentration of the gas source increases instantaneously, which causes potential safety hazards. And because the internal catalyst bed layer caused by the catalytic reaction chamber has a gas short circuit, and the gas blowby at the cold side and the hot side of the plate heat exchanger can cause that the gas entering the emptying cylinder after the catalytic reaction can not reach the standard and is illegally discharged.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model provides a safe efficient VOCs catalytic oxidation processing apparatus for solve because potential safety hazard and tail gas can not discharge to reach standard's problem.
The technical scheme is as follows: a safe efficient VOCs catalytic oxidation processing apparatus, including air intake system, with catalytic system and the safety coefficient of air intake system intercommunication:
the security system includes at least one of:
the first security system: the first safety system is an adsorption device which is arranged between the air inlet system and the catalytic system and is used for adjusting the concentration of VOCs;
the second security system: the second safety system is a first exhaust system which is arranged at an outlet of the air inlet system and communicated with the air inlet system;
a third security system: the third safety system is a flame arrester arranged at the outlet of the air intake system.
Furthermore, the first safety system is an adsorption device without an analytic system, a peak clipping agent is filled in the adsorption device, the peak clipping agent adsorbs part of the high-concentration organic solvent when the inlet concentration of the VOCs is high, and the peak clipping agent releases part of the concentration organic solvent when the inlet concentration of the VOCs is low, so that concentration fluctuation entering the VOCs catalytic system is reduced, and potential safety hazards are eliminated;
furthermore, the peak clipping agent is a hydrophobic molecular sieve, which solves the problem of high concentration (the concentration is more than 25 percent of the lower explosion limit of the organic solvent in the VOCs, and is about 10g/m3) Because the pneumatic valve is not switched in time and enters the potential safety hazard of a catalytic reaction system instantly. And a heating system for heating the VOCs is arranged at the inlet of the catalytic system. And the gas outlet of the heating system is connected with the inlet of the catalytic system.
The inlet of the heating system is provided with a heat exchange system, the cold side inlet of the heat exchange system is communicated with the air inlet system, and the cold side outlet of the heat exchange system is communicated with the inlet of the heating system.
Furthermore, the heat exchange system is a high-efficiency gas-gas heat exchanger which is a full-welded plate heat exchanger, so that the possible short circuit condition of cold and hot air flow is solved.
And the outlet of the catalytic system is communicated with the inlet of the hot side of the heat exchange system, and the outlet of the hot side of the heat exchange system is connected with a second exhaust system. The adsorption device for adjusting the concentration of the VOCs is filled with a peak clipping agent.
And an air distribution system is arranged at the inlet of the heat exchange system.
Preferably, the air distribution system is a variable frequency fan and is interlocked with a temperature sensor in the catalytic system for frequency conversion, so that the catalytic temperature is stably controlled, and the safe and efficient operation of catalytic reaction is ensured
The catalytic system is filled with a noble metal catalyst which is stacked in three layers of drawer type, so that the phenomenon of bias flow and temperature deviation of air flow is solved, and the reacted gas is ensured to reach the national emission standard.
The air inlet system comprises a VOCs air inlet pipe and an induced draft fan communicated with an outlet of the air inlet pipe, the induced draft fan is a first variable frequency fan and is interlocked with a pressure sensor arranged on the VOCs air inlet pipe, and optimally, the pressure of a control header pipe is lower than 500 pa; the third safety system is a bidirectional explosion-proof flame arrester arranged behind the induced draft fan.
The air distribution system is a fan, the fan is a second variable frequency fan, and the temperature sensor in the catalytic system performs interlocking frequency conversion, so that the catalytic temperature is stably controlled, and the safe and efficient operation of catalytic reaction is ensured.
Preferably, the safe and efficient catalytic oxidation treatment device for VOCs comprises an air inlet system, wherein an outlet of the air inlet system is communicated with an inlet of a first safety system, an outlet of the first safety system is communicated with a cold side inlet of a heat exchange system, a cold side outlet of the heat exchange system is communicated with a heating system, an outlet of the heating system is communicated with an inlet of the catalytic system, an outlet of the catalytic system is communicated with a hot side inlet of the heat exchange system, and a hot side outlet of the heat exchange system is communicated with a second exhaust system;
and/or an air distribution system is arranged at the inlet of the heat exchange system;
and/or a second safety system communicated with the air inlet system is arranged at the outlet of the air inlet system;
and/or a third security system: the third safety system is a flame arrester arranged at the outlet of the air intake system.
More preferably, the safe and efficient catalytic oxidation treatment device for VOCs of the present invention comprises an air inlet system, a catalytic system, a safety system, a heat exchange system, a heating system and a second exhaust system; the security systems include a first security system, a second security system, and a third security system;
the outlet of the air inlet system is communicated with the inlet of a first safety system, the outlet of the first safety system is communicated with the cold side inlet of the heat exchange system, the cold side outlet of the heat exchange system is communicated with the heating system, the outlet of the heating system is communicated with the inlet of the catalytic system, the outlet of the catalytic system is communicated with the hot side inlet of the heat exchange system, and the hot side outlet of the heat exchange system is communicated with the second exhaust system;
the outlet of the air inlet system is provided with a second safety system communicated with the air inlet system, a first gas bypass is arranged between the air inlet system and the inlet of the second safety system, and a first valve for controlling the opening and closing of the first gas bypass is arranged on the first gas bypass.
The air inlet system is communicated with the first safety system through a first gas main path, and a second valve for controlling the opening and closing of the first gas main path is arranged on the first gas main path;
an air distribution system is also arranged between the first safety system and the heat exchange system;
the first safety system is an adsorption device without an analysis system, and the second safety system is a first exhaust system which is arranged at an outlet of the air inlet system and communicated with the air inlet system.
Further, the safe and efficient catalytic oxidation treatment device for VOCs further comprises a fourth safety system: the fourth safety system is a second gas bypass which is communicated with the catalytic system and the second evacuation system, and a rupture disc is arranged on the second gas bypass. Preferably, the rupture disk is a pressure type mechanical rupture disk.
When the pressure of the catalytic system is higher than a set value, the pressure type mechanical rupture disk is opened, and the pressure is automatically released to the second exhaust system.
Further, a third gas bypass is arranged between the outlet of the catalytic system and the second exhaust system, and a third valve is arranged on the third gas bypass.
When the temperature of the organic waste gas entering the thermal system is higher than the set value, a third valve is opened, and a part of hot gas of the catalytic system is branched and directly enters the second exhaust system.
Further, the inlet of the heating system is provided with a temperature sensor, and when the temperature of the gas entering the heating system is detected to be higher than a set value, the heating system is automatically closed.
The utility model adopts the separate arrangement of the first exhaust system and the second exhaust system, the separate arrangement of the draught fan and the air distribution fan, and the utilization of the first safety system to solve the potential safety hazard caused by the instantaneous over-high concentration of the air source; the utility model discloses a heat exchanger among the heat transfer system is the precious metal catalyst that loads in full-welding plate heat exchanger and the catalytic system and divides three-layer drawer type to put things in good order the short circuit and the bias current phenomenon of solving the air current, ensures the high-efficient discharge to reach standard of system's tail gas.
The working method of the safe and efficient VOCs catalytic oxidation treatment device comprises the following steps:
when the processing device contains a first security system:
after the VOCs are pressurized by the air inlet system, the VOCs enter the first safety system to adjust the concentration of the VOCs, when the inlet concentration of the VOCs is high, part of high-concentration organic waste gas is adsorbed, and when the inlet concentration of the VOCs is low, part of concentration organic waste gas is released, so that the concentration fluctuation of the VOCs entering the catalytic system is reduced; the VOCs passing through the first safety system enters a catalytic system, and the organic solvent in the VOCs is catalytically incinerated into CO2And H2O, treating the gas to reach the standard and discharging the gas;
when the processing device includes a second security system:
after VOCs are pressurized by the air inlet system, VOCs enter the catalytic system to dissolve organic matters in VOCsCatalytic incineration of CO2And H2O, treating the gas to reach the emission standard when the inlet gas concentration is higher than 25 percent (about 10 g/m) of the lower explosion limit of the organic solvent in the VOCs3) Or when the temperature of the catalytic system is too high, closing an air inlet channel between the air inlet system and the catalytic system, opening the connection between the air inlet system and a second safety system, and discharging the VOCs through the second safety system;
when the treatment device comprises a heat exchange system:
VOCs up-to-standard gas converted by the catalytic system enters the hot side of the heat exchange system, and is sent into the VOCs heat exchange cooling on the cold side of the heat exchange system with the gas inlet system, and the up-to-standard gas after being cooled is discharged through the exhaust system.
Has the advantages that: (1) the utility model discloses a safety coefficient has been set up for adjust the VOCs concentration of admitting air, solve the air supply and come the system temperature rise that gas concentration fluctuation arouses with and the potential safety hazard, especially solve high concentration (concentration > 25% of organic solvent explosion lower limit in the VOCs, about 10g/m3) The pneumatic valve is not switched in time and enters a catalytic system at the moment; (2) the utility model discloses be provided with first exhaust system, 25% (about 10 g/m) that the concentration of admitting air is higher than organic solvent explosion lower limit in the VOCs3) Or when the temperature of the catalytic system is too high, the air inlet pipeline entering the catalytic system is automatically closed, and the first exhaust system connected with the air inlet system is opened for discharging, so that potential safety hazards are eliminated; (3) the heat exchanger in the heat exchange system of the utility model is a full-welding plate type heat exchanger, which solves the possible short circuit condition of cold and hot air flow; (4) the noble metal catalyst filled in the catalytic system of the utility model is stacked in three layers of drawer type, thus solving the problem of bias and temperature deviation of the airflow; (5) the utility model has the advantages that the air distribution machine in the air distribution system and the temperature sensor in the catalytic system are interlocked for frequency conversion, so that the catalytic temperature is stably controlled, and the safe and efficient operation of the catalytic reaction is ensured; (6) the heat exchange system provided by the utility model exchanges heat between the standard-reaching gas converted by the catalytic system and the non-standard VOCs entering from the air inlet system, thereby saving the energy consumption of the system; (7) the utility model discloses air intake system's draught fan and air distribution system's air distribution machine separately sets up, and the pressure interlocking control of draught fan and upper reaches collecting pipe net, air distribution machine and catalytic systemThe maximum temperature of the four temperature sensors is controlled in a linkage manner, and when the induced draft fan is in fault shutdown, the air distribution fan can be used as a cooling fan.
Drawings
Fig. 1 is a schematic structural view of a treatment apparatus according to the present invention.
Detailed Description
Example 1: a safe efficient VOCs catalytic oxidation processing apparatus, contain air intake system 1, with the safety coefficient 2 of air intake system 1 intercommunication, with the heat transfer system 3 of safety coefficient 2 intercommunication, with the heating system 4 of 3 intercommunications of heat transfer system, with catalytic system 5 and the second exhaust system 6 that heating system 4 is connected.
In this embodiment, the safety system 2 is composed of a first safety system 21, a first gas main path 13 is provided at an outlet of the intake system 1, the outlet of the first gas main path 13 is connected to the first safety system 21, and a second valve 131 for controlling the opening and closing of the first gas main path is provided on the first gas main path 13. The outlet of the first safety system 21 is connected with the heat exchange system 3, specifically, the first safety system 21 is an adsorption device without an analytic system, the adsorption device is filled with a hydrophobic molecular sieve as a peak clipping agent, the peak clipping agent adsorbs part of high-concentration organic waste gas when the inlet concentration of the VOCs is high, the peak clipping agent releases part of concentration organic waste gas when the inlet concentration of the VOCs is low, so that concentration fluctuation entering a VOCs catalytic system is reduced, and potential safety hazards are eliminated3) Because the pneumatic valve is not switched in time and enters the potential safety hazard of the catalytic system instantly.
In order to further improve the security of the system, the first security system 21 and the second security system 22 are used to form a security system, specifically: the outlet of the air intake system 1 is provided with a first gas bypass 14, the first gas bypass 14 is connected with a second safety system 22, in this embodiment, the second safety system 22 is an evacuation cylinder communicated with the first gas bypass 14, the first gas bypass 14 is provided with a first valve 141 for controlling the opening and closing of the first gas bypass, and in this embodiment, the first valve is a pneumatic butterfly valve.
When the feed gas concentration is higher than 25% (about 10 g/m) of the lower explosion limit of the organic solvent in the VOCs3) Or when the temperature of the catalytic system is too high and is higher than a set value (for example, more than 450 ℃), the second valve 131 for air inlet is automatically closed, and the first valve 141 for emergency exhaust is opened, so that the VOCs are discharged from the emergency exhaust cylinder.
In this embodiment, a bidirectional explosion-proof bombing flame arrester may be additionally installed behind the induced draft fan 12 as a third safety system 23.
The cold side inlet of the heat exchange system 3 in this embodiment is connected to the outlet of the first safety system 21, the heat exchange system 3 in this embodiment is a gas-gas heat exchanger of a college, and the heat exchanger is a full-welded plate heat exchanger, thereby solving the possible short circuit situation of cold and hot air flows.
The inlet of the heating system 4 in this embodiment is connected to the cold side outlet of the heat exchange system 3, and the heating system 4 in this embodiment is an electric heater.
In this embodiment, the inlet of the catalytic system 5 is connected to the outlet of the heating system 4, the catalytic system 5 in this embodiment is a catalytic reaction chamber, and the precious metal catalysts filled in the catalytic reaction chamber are stacked in three drawer-type arrangements, so that the phenomenon of bias flow and temperature deviation of the gas flow is solved, and the gas after reaction is ensured to reach the national emission standard.
The outlet of the catalytic system 5 is communicated with the hot side inlet of the heat exchange system 3, so that the high-temperature gas converted by the catalytic system 5 and the gas sent by the gas inlet system exchange heat in the heat exchange system 3 to reduce the temperature.
The import of second exhaust system 6 and heat transfer system 3's hot side export intercommunication, the second exhaust system in this embodiment is an evacuation section of thick bamboo, and the gaseous evacuation section of thick bamboo up to standard after the cooling of the output of heat transfer system 3's hot side export discharges safely.
An air distribution system 7 is arranged between the first safety system 21 and the heat exchange system, in the embodiment, the air distribution system 7 is an air distribution fan, the air distribution fan is a second variable frequency fan, and the air distribution fan and a temperature sensor in the catalytic reaction chamber are interlocked for frequency conversion to control the catalytic reaction temperature, so that the catalytic temperature is stably controlled, and the safe and efficient operation of the catalytic reaction is ensured.
The working method of the processing device of the embodiment is as follows:
after the VOCs are pressurized by the air inlet system, the VOCs enter the first safety system to adjust the concentration of the VOCs, when the inlet concentration of the VOCs is high, part of high-concentration organic waste gas is adsorbed, and when the inlet concentration of the VOCs is low, part of concentration organic waste gas is released, so that the concentration fluctuation of the VOCs entering the catalytic system is reduced; the VOCs passing through the first safety system enters a catalytic system, and the organic solvent in the VOCs is catalytically incinerated into CO2And H2O, treating the gas to reach the standard and discharging the gas;
VOCs passes through the draught fan pressure boost back, through first safety coefficient, reduces the concentration fluctuation that gets into VOCs catalytic system, and VOCs gets into heat exchanger cold side entry, and preliminary heat transfer heating then gets into the heater and heats to VOCs's light-off temperature 240 ℃, gets into the organic waste gas catalysis of catalytic reaction room in with VOCs and burns for CO2And H2O, processing the gas into standard-reaching gas, releasing heat to heat the standard-reaching VOCs gas to about 360 ℃, and finally entering a hot side inlet of a heat exchanger to ensure that the standard-reaching gas exchanges heat with inlet air in the heat exchanger to be cooled, wherein the cooled standard-reaching gas is safely discharged through a second exhaust system at about 120 ℃;
when the feed gas concentration is higher than 25% (about 10 g/m) of the lower explosion limit of the organic solvent in the VOCs3) Or when the temperature of the catalytic reaction chamber is too high, closing a first valve between the induced draft fan and the first safety system, opening a second valve between the air inlet system and the second safety system, and discharging the VOCs through the second safety system.
Example 2: the present embodiment is a processing apparatus optimized on the basis of embodiment 1:
the treatment device is provided with a fourth safety system 24, which in this embodiment is a second gas bypass 241, in which a rupture disc 242, in this embodiment a pressure-type mechanical rupture disc, is arranged between the catalytic system 5 and the second evacuation system 6.
When the pressure in the catalytic reaction chamber is higher than a predetermined value, for example, the pressure in the catalytic reaction chamber is higher than 5kpa, the pressure type mechanical rupture disk opens to automatically release the pressure to the second exhaust system 6.
A third gas bypass 51 is provided between the outlet of the catalytic reaction chamber and the second exhaust system, and a third valve 52 is provided on the third gas bypass 51.
When the temperature of the organic exhaust gas entering the thermal system is higher than the set value, for example, when the temperature of the organic exhaust gas is higher than 240 ℃, the third valve 52 is opened, and a part of the hot gas from the catalytic system is branched and directly enters the second exhaust system 6.
The inlet of the heating system 4 is provided with a temperature sensor 41 which automatically shuts down the heating system when it is detected that the temperature of the gas entering the heating system 4 is higher than a set value.
Application example 1: 1000Nm for treating acetone organic waste gas by using equipment3/h。
The concentration of the inlet acetone waste gas is 4g/m3Sometimes it reaches 12g/m instantaneously3. Starting a fan, starting an electric heater, automatically closing the motor when the outlet temperature reaches 240 ℃, opening an air inlet pneumatic butterfly valve B, closing an emergency exhaust pneumatic butterfly valve A, starting a draught fan and interlocking with a header pipe pressure sensor, automatically interlocking the temperature of a catalytic oxidation reactor with a wind distribution variable frequency fan, controlling the temperature to be 300-400 ℃, controlling the optimal temperature to be 340 ℃, stably operating a system, cooling and detecting a sampling gas at an exhaust funnel, and obtaining a result of 42mg/m3And the system is stable and reaches the standard to discharge.
Application example 2: the device is used for treating the benzene organic waste gas with 2000Nm3/h。
The concentration of the waste gas of the inlet benzene is 3g/m3Sometimes it reaches 9g/m instantaneously3. Starting the air distribution fan, starting the electric heater, automatically closing the motor when the outlet temperature reaches 220 ℃, opening the air inlet pneumatic butterfly valve B, closing the emergency exhaust pneumatic butterfly valve A, starting the draught fan and interlocking with the header pipe pressure sensor, and automatically switching on the catalytic oxidation reactor temperature and the air distribution variable frequency fanThe dynamic interlocking is carried out, the temperature is controlled to be 300-400 ℃, the optimal temperature is 320 ℃, the system stably operates, the sampling gas at the exhaust funnel is cooled and detected, and the result is 3mg/m3And the system is stable and reaches the standard to discharge.
Although the invention has been shown and described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined in the following claims.
Claims (10)
1. A safe and efficient VOCs catalytic oxidation treatment device is characterized by comprising: an air intake system, a catalytic system in communication with the air intake system, and a system comprising at least one of:
the first security system: the first safety system is an adsorption device which is arranged between the air inlet system and the catalytic system and is used for adjusting the concentration of VOCs;
the second security system: the second safety system is a first exhaust system which is arranged at an outlet of the air inlet system and communicated with the air inlet system;
a third security system: the third safety system is a flame arrester arranged at the outlet of the air intake system.
2. The apparatus of claim 1, wherein a heating system is provided at the inlet of the catalytic system for heating the VOCs.
3. The apparatus according to claim 2, wherein the inlet of the heating system is provided with a heat exchange system, the cold side inlet of the heat exchange system is communicated with the air inlet system, and the cold side outlet of the heat exchange system is communicated with the inlet of the heating system.
4. The device for the catalytic oxidation treatment of safe and efficient VOCs according to claim 3, wherein the outlet of the catalytic system is communicated with the hot side inlet of the heat exchange system, and the hot side outlet of the heat exchange system is connected with a second exhaust system.
5. The apparatus of claim 1, wherein the adsorption means for adjusting the concentration of VOCs is an adsorption means filled with a peak clipping agent.
6. The safe and efficient catalytic oxidation treatment device for VOCs according to claim 3, wherein an air distribution system is arranged at the inlet of the heat exchange system; and/or the air distribution system comprises an air distribution machine which is a variable frequency fan and is interlocked with a temperature sensor in the catalytic system for frequency conversion.
7. The apparatus of claim 3, wherein the catalytic system is filled with precious metal catalysts, and the precious metal catalysts are stacked in three layers in drawer-type.
8. The safe and efficient VOCs catalytic oxidation treatment device of claim 1, wherein the air intake system comprises a VOCs air intake pipe and an induced draft fan communicated with an outlet of the air intake pipe, and the induced draft fan is a variable frequency fan and is interlocked with a pressure sensor arranged in the VOCs air intake pipe.
9. The safe and efficient catalytic oxidation treatment device for VOCs according to claim 6, wherein the catalytic system and the second evacuation system are provided with a second gas bypass, and a rupture disk is arranged on the second gas bypass; and/or a third gas bypass is arranged between the outlet of the catalytic system and the second exhaust system, and a third valve is arranged on the third gas bypass.
10. The apparatus according to claim 4, comprising a fourth safety system: the fourth safety system is a second gas bypass which is communicated with the catalytic system and a second evacuation system, and a rupture disc is arranged on the second gas bypass;
and/or a third gas bypass is arranged between the outlet of the catalytic system and the second exhaust system, and a third valve is arranged on the third gas bypass.
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| CN110479093A (en) * | 2019-08-28 | 2019-11-22 | 南京都乐制冷设备有限公司 | A kind of safe and efficient VOCs catalytic oxidation treatment device and its working method |
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