CN212805676U - Heat energy recycling system applied to RTO heat storage oxidation furnace - Google Patents
Heat energy recycling system applied to RTO heat storage oxidation furnace Download PDFInfo
- Publication number
- CN212805676U CN212805676U CN202021638059.0U CN202021638059U CN212805676U CN 212805676 U CN212805676 U CN 212805676U CN 202021638059 U CN202021638059 U CN 202021638059U CN 212805676 U CN212805676 U CN 212805676U
- Authority
- CN
- China
- Prior art keywords
- heat
- desorption
- valve
- heat exchanger
- hot blast
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Treating Waste Gases (AREA)
Abstract
The embodiment of the utility model provides a be applied to system of recycling of heat energy of RTO heat accumulation oxidation furnace, the hot-blast valve setting of this system is on the hot-blast main of the combustion chamber output gas of RTO heat accumulation oxidation furnace, and still is connected with the heat energy device of recycling, is used for doing the heat energy device of recycling provides heat energy, so that the heat energy device of recycling is right the combustion chamber exhaust heat energy is recycled. It can be seen, use the utility model discloses the system that the embodiment provided can reduce the waste of the thermal energy source.
Description
Technical Field
The utility model relates to a waste gas treatment technical field especially relates to a be applied to heat energy system of recycling of RTO heat accumulation oxidation furnace.
Background
In industrial production, a large amount of organic gases harmful to the atmospheric environment, such as waste gases of VOCs, are generated, and in order to prevent environmental pollution, the waste gases must be treated.
At present, the waste gas is usually incinerated by using a Regenerative Thermal Oxidizer (RTO) heat storage oxidation furnace heat storage oxidation technology, so that organic matters such as hydrocarbons, alcohols, ethers, esters and the like in the waste gas are incinerated by the RTO and then oxidized into water and carbon dioxide to achieve standard emission.
However, in the process of treating the waste gas by using the regenerative thermal oxidation technology of the RTO incinerator, the temperature of the gas discharged after the waste gas is treated by the RTO incinerator can reach 100-200 ℃, and the waste of heat energy resources is caused, and environmental protection risks and potential safety hazards also exist if the high-temperature gas is directly discharged.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the utility model is to provide a be applied to RTO heat accumulation oxidation furnace's heat energy system of recycling can reduce the waste of the thermal energy source. The specific technical scheme is as follows:
the embodiment of the utility model provides a be applied to system is recycled to heat energy of RTO heat accumulation oxidation furnace, the system includes: a hot blast valve and a heat energy recycling device;
the hot blast valve is arranged on a hot blast pipe of the combustion chamber output gas of the RTO heat storage oxidation furnace, is used for absorbing the heat energy of the combustion chamber output gas and outputs the gas after absorbing the heat energy through the hot blast pipe;
the hot blast valve is also connected with the heat energy recycling device and used for providing heat energy for the heat energy recycling device so that the heat energy recycling device recycles the heat energy exhausted by the combustion chamber.
In one embodiment of the present invention, the hot blast valve is a valve body with a hollow valve plate, and the interior of the valve body is filled with high temperature resistant material;
and the water outlet of the valve body is connected with the heat energy recycling device and is used for refluxing the circulating water in the valve plate to the heat energy recycling device.
In an embodiment of the present invention, the heat energy recycling device includes a water replenishing tank of a waste heat boiler, the waste heat boiler with a temperature controller and an electric heater, a first heat exchanger, a reboiler, and an exhaust chimney;
the waste heat boiler water supplementing tank is connected with the hot blast valve, the waste heat boiler and the first heat exchanger;
the waste heat boiler is respectively connected with the first heat exchanger and the reboiler, and the electric heater is started to heat when the temperature controller measures that the temperature in the waste heat boiler is lower than a threshold value;
the first heat exchanger is communicated with the hot blast valve through the hot blast pipe and is connected with the exhaust chimney through the ventilation pipeline.
In one embodiment of the present invention, the heat energy recycling apparatus further comprises the distillation tower and a steam dryer;
the distillation column is connected with the reboiler;
and the steam dryer is respectively connected with the distillation tower and the waste heat boiler and is used for drying and reducing precipitates in the distillation tower.
The utility model discloses an embodiment, first heat exchanger with air pipe between the exhaust chimney is equipped with the bypass pipeline, the system still includes: a purging fan and a purging preheating control valve;
the purging fan is used for being connected with a purging pipeline 3-2 at the bottom of the RTO heat storage oxidation furnace;
the purging fan is further connected with the exhaust chimney through the purging preheating control valve by means of the bypass pipeline, and is used for recycling high-temperature gas exhausted by the first heat exchanger to the RTO thermal storage oxidation furnace along with purging wind generated by the purging fan under the condition that the purging fan is operated.
In an embodiment of the present invention, the system further comprises: a second heat exchanger;
and the second heat exchanger is connected to an exhaust pipeline at the bottom of the RTO heat storage oxidation furnace and is respectively communicated with the waste heat boiler water replenishing tank 2-1 and the exhaust chimney.
In one embodiment of the present invention, the system further comprises a desorption device for high temperature desorption of the exhaust gas;
the desorption device is communicated with the hot blast valve by utilizing the hot blast pipe.
In one embodiment of the present invention, the desorption device includes: the third heat exchanger, the zeolite rotating wheel, the desorption preheating control valve, the dehumidifier air volume control valve and the dehumidifier;
the third heat exchanger is communicated with a combustion chamber at the top of the RTO heat storage oxidation furnace through the hot blast valve and the desorption preheating control valve in sequence, is communicated with the desorption pipeline of the zeolite rotating wheel and is also connected with the dehumidifier connected to the air inlet pipeline of the zeolite rotating wheel through the dehumidifier air volume control valve.
In one embodiment of the present invention, the desorption device includes: the desorption device includes: the third heat exchanger, the zeolite rotating wheel, the desorption preheating control valve, the desorption three-way valve, the dehumidifier and the moisture meter for measuring the humidity;
the third heat exchanger is communicated with the hot blast valve through the desorption preheating control valve by utilizing the hot blast pipe, and is respectively connected with the desorption pipeline of the zeolite rotating wheel and the dehumidifier by utilizing the desorption three-way valve through the moisture meter;
the dehumidifier is connected to the air inlet pipeline of the zeolite rotating wheel.
The utility model discloses an in the embodiment, shell and tube heat exchanger is chooseed for use to the second heat exchanger.
The embodiment of the utility model provides a pair of be applied to system of recycling of heat energy of RTO heat accumulation oxidation furnace, the hot-blast valve setting of this system is on the hot-blast main of the combustion chamber output gas of RTO heat accumulation oxidation furnace, and still is connected with the heat energy recycling device, is used for doing the heat energy recycling device provides heat energy, so that the heat energy recycling device is right the exhaust heat energy of combustion chamber is recycled. Compared with the prior art, the embodiment of the utility model provides an no longer directly discharge high-temperature gas, but recycles the produced heat energy of RTO heat accumulation oxidation furnace incineration waste gas to avoid the high-temperature gas who discharges to cause the danger to the environment, and then further reduce environmental protection risk and potential safety hazard. It can be seen, use the utility model discloses the system that the embodiment provided can reduce the waste of the thermal energy source. Of course, it is not necessary for any product or method of the invention to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a schematic structural diagram of a first thermal energy recycling system applied to an RTO regenerative thermal oxidizer according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a first heat energy recycling system applied to an RTO regenerative thermal oxidizer according to an embodiment of the present invention.
Wherein, 1-hot blast valve, 2-heat energy recycling device, 3-RTO heat storage oxidation furnace, 4-purging fan, 5-purging preheating control valve, 6-second heat exchanger, 7-desorption device, 2-1-waste heat boiler water supplementing tank, 2-2-waste heat boiler, 2-3-first heat exchanger, 2-4-reboiler, 2-5-exhaust chimney, 2-6-distillation tower, 2-7-steam drier, 3-1-hot blast pipe, 3-2-purging pipeline, 3-3-exhaust pipeline, 7-1-third heat exchanger, 7-2-zeolite runner, 7-3-desorbing preheating control valve, 7-4-dehumidifier air volume control valve, 7-5-a dehumidifier, 7-6-a moisture meter, 7-7 a desorption three-way valve, 2-2-1-a temperature controller, 2-2-2-an electric heater, 7-2-1-a desorption pipeline and 7-2-2-an air inlet pipeline.
Detailed Description
The technical solution in the embodiment of the present invention will be described below with reference to the accompanying drawings in the embodiment of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a thermal energy recycling system applied to an RTO thermal storage oxidation furnace according to an embodiment of the present invention, where the system includes: a hot blast valve 1 and a heat energy recycling device 2;
the hot blast valve 1 is arranged on a hot blast pipe 3-1 of a combustion chamber of the RTO heat storage oxidation furnace 3 for outputting high-temperature gas, is used for absorbing heat energy of the gas output by the combustion chamber, and outputs the gas after absorbing the heat energy through the hot blast pipe 3-1;
the hot blast valve 1 is also connected with the heat energy recycling device 2 and is used for providing heat energy for the heat energy recycling device 2 so that the heat energy recycling device 2 recycles the heat energy exhausted by the combustion chamber.
However, the present embodiment may include the RTO regenerative thermal oxidizer 3, or may not include the RTO regenerative thermal oxidizer 3, and the present embodiment is not limited thereto.
The exhaust gas in this embodiment may be a VOCSThe RTO regenerative thermal oxidizer 3 can be used for desorbing the waste gas containing high concentration VOCSThe gas is subjected to catalytic combustion treatment.
In this embodiment, the exhaust gas passes through the combustion chamber of the RTO regenerative thermal oxidizer 3 to generate safe and exhaustable high-temperature gas, the high-temperature gas carries a large amount of heat energy, and the heat energy recycling device 2 can obtain the heat energy carried by the high-temperature gas and recycle the heat energy.
The discharged heat energy can be reused by inputting heat energy into a reboiler, inputting heat energy into spring water for heating, inputting heat energy into a bathing room for heating water and the like.
The working principle of the system of the embodiment is as follows: the waste gas is incinerated in a combustion chamber of the RTO heat storage oxidation furnace 3 to generate high-temperature gas which can be discharged, when the high-temperature gas passes through the hot blast valve 1, the hot blast valve 1 absorbs the heat energy of the gas output by the combustion chamber, the gas after absorbing the heat energy is output through the hot blast pipe 3-1, and the heat absorbed by the hot blast valve 1 is conveyed to the heat energy recycling device 2 to be recycled, so that the purpose of less energy loss is achieved.
Therefore, in the technical solution provided by the embodiment of the present invention, the hot blast valve 1 of the system is disposed on the hot blast pipe 3-1 of the combustion chamber of the RTO thermal storage oxidation furnace 3 for outputting high temperature gas, and is further connected with a thermal energy recycling device for providing thermal energy for the thermal energy recycling device, so that the thermal energy recycling device recycles the thermal energy discharged from the combustion chamber. Compared with the prior art, the embodiment of the utility model provides an no longer directly discharge high-temperature gas, but recycles RTO heat accumulation oxidation furnace 3 burns the produced heat energy of waste gas to avoid the high-temperature gas who discharges to cause the danger to the environment, and then further reduce environmental protection risk and potential safety hazard. It can be seen, use the utility model discloses the system that the embodiment provided can reduce the waste of the thermal energy source.
In one embodiment of the present invention, the hot blast valve 1 is a valve body with a hollow valve plate, and the interior of the valve body is filled with high temperature resistant material;
and the water outlet of the valve body is connected with the waste heat boiler water supplementing tank 2-1 and is used for refluxing the circulating water in the valve plate to the waste heat boiler water supplementing tank 2-1.
In this embodiment, the high temperature resistant material filled in the valve body can filter the high temperature gas output from the combustion chamber at the top of the RTO regenerative thermal oxidizer 3.
The valve plate is of a hollow structure, cold water with low temperature can flow into the valve plate, when high-temperature gas passes through the filling material in the valve body, the filling material absorbs part of heat energy of the high-temperature gas and transmits the heat energy to the cold water in the valve plate, so that the cold water absorbs the heat energy, water flowing out of the valve body is changed into hot water after absorbing the heat energy, the hot water carrying the heat energy flows back into the waste heat boiler water supplementing tank 2-1, and in addition, the high-temperature gas losing part of the heat energy from the valve body flows into the hot air pipe 3-1.
Since the gas discharged from the RTO regenerative thermal oxidizer 3 has strong acidity, the valve body may be made of a material resistant to strong acidity and heat, such as a stainless material.
Therefore, in the technical scheme provided by the embodiment of the utility model, the hot blast valve 1 is a valve body with a hollow valve plate, and the interior of the valve body is filled with high temperature resistant materials; the water outlet of the valve body is connected with the water replenishing tank 2-1 of the waste heat boiler, so that the filled high-temperature resistant material can absorb the heat energy of the high-temperature gas, and meanwhile, the temperature of the high-temperature gas can be reduced to prepare for subsequent heat energy recycling.
In an embodiment of the present invention, as shown in fig. 1, the heat energy recycling device 2 may include a heat recovery boiler water replenishing tank 2-1, a heat recovery boiler 2-2 with a temperature controller 2-2-1 and an electric heater 2-2-2, a first heat exchanger 2-3, a reboiler 2-4, and an exhaust chimney 2-5;
the waste heat boiler water supplementing tank 2-1 is connected with the hot blast valve 1, the waste heat boiler 2-2 and the first heat exchanger 2-3;
the waste heat boiler 2-2 is respectively connected with the first heat exchanger 2-3 and the reboiler 2-4, and when the temperature controller measures that the temperature in the waste heat boiler 2-2 is lower than a threshold value, the electric heater 2-2-2 is started to heat;
the first heat exchanger 2-3 is communicated with the hot blast valve through the hot blast pipe 3-1 and is connected with the exhaust chimney 2-5 through a ventilation pipeline.
The electric heater 2-2-2 can perform auxiliary heating on the waste heat boiler 2-2 according to the temperature measured by the temperature controller 2-2-1.
In the embodiment, high-temperature gas generated by a combustion chamber of the RTO heat storage oxidation furnace 3 is output through a hot air pipe 3-1 and is cooled after passing through a hot air valve 1, the hot air valve 1 takes away a first part of heat energy of the high-temperature gas, and the first part of heat energy is input into a waste heat boiler water replenishing tank 2-1 to replenish heat energy for the waste heat boiler water replenishing tank 2-1;
a second part of heat energy of the high-temperature gas flows into the first heat exchanger 2-3 along with the cooled high-temperature gas, the first heat exchanger 2-3 carries out heat exchange and cooling on the second part of heat energy, part of the heat energy of the second part of heat energy is input into the waste heat boiler water replenishing tank 2-1, and the heat energy in the waste heat boiler water replenishing tank 2-1 is further supplemented;
meanwhile, the first heat exchanger 2-3 also exchanges heat of heat energy in the waste heat boiler 2-2, part of the heat energy in the waste heat boiler 2-2 is further supplemented to a waste heat boiler water supplementing tank 2-1, and in addition, the cooled low-temperature gas is discharged through an exhaust chimney 2-5.
Wherein, a temperature controller can be arranged in the first heat exchanger 2-3, and if the temperature of the cooled gas is measured to be lower than a preset value, the cooled gas can be discharged through an exhaust chimney 2-5. And if the measured temperature of the cooled gas is higher than or equal to the preset value, the cooled gas can be discharged to the heat energy recovery device.
Meanwhile, the water replenishing tank 2-1 of the waste heat boiler continuously replenishes heat energy to the waste heat boiler 2-2, so that the energy loss in the waste heat boiler 2-2 is further reduced, and the energy is further saved.
In order to enable the waste heat boiler 2-2 to continuously provide heat energy to the reboiler 2-4. The reboilers 2-4 can provide high temperature distillation gas.
In an embodiment of the present invention, as shown in fig. 1 to 2, the heat energy recycling device may further include a distillation tower 2-6, and the distillation tower 2-6 is connected to the reboiler 2-4.
The distillation columns 2-6 can be used for high-temperature rectification of the product.
The waste heat boiler 2-2 of the embodiment is provided with an electric heater 2-2-2 and a temperature controller 2-2-1, so that the waste heat boiler 2-2 can provide the temperature capable of high-temperature rectification for the distillation tower 2-6.
In order to enable the exhaust-heat boiler 2-2 to continuously provide heat energy for the reboiler 2-4 and the distillation tower 2-6 so as to perform high-temperature rectification on the product, the exhaust-heat boiler 2-2 of the embodiment is provided with a heating pipe and a temperature controller 2-2-1, so that the exhaust-heat boiler 2-2 can provide the temperature capable of performing high-temperature rectification for the distillation tower 2-6.
The above-mentioned activation of the electric heater 2-2-2 for heating includes at least two embodiments, wherein,
the first embodiment is as follows: when the temperature controller 2-2-1 measures that the temperature of the waste heat boiler 2-2 is lower than a threshold value, the temperature controller 2-2-1 starts the electric heater 2-2-2 to heat.
The second embodiment is as follows: when the temperature controller 2-2-1 measures that the temperature of the waste heat boiler 2-2 is lower than the threshold value, an external control system starts the electric heater 2-2-2 to heat.
The threshold value is related to the rectification temperature to be rectified in the distillation towers 2-6, and the threshold value is greater than the rectification temperature.
For example, if the temperature of the high-temperature distillation needs to be maintained at 200 degrees or more, and the temperature of the corresponding exhaust-heat boiler 2-2 needs to be at least 260 degrees, the temperature controller 2-2-1 measures the temperature in the exhaust-heat boiler 2-2 in real time, and if the temperature in the exhaust-heat boiler 2-2 is higher than 260 degrees, only the exhaust-heat boiler 2-2 needs to continuously provide heat energy for the reboiler 2-4, so that the reboiler 2-4 can provide steam higher than 200 degrees, and the distillation tower 2-6 can distill the product in the distillation tower 2-6 at a temperature higher than 200 degrees. If the temperature in the waste heat boiler 2-2 is lower than 260 ℃, the electric heater 2-2-2 needs to be started so that the temperature in the waste heat boiler 2-2 is higher than 260 ℃.
Therefore, in the technical scheme provided by the embodiment of the utility model, the waste heat boiler water replenishing tank 2-1 of the heat energy recycling device 2 is connected with the hot blast valve 1, the waste heat boiler 2-2 and the first heat exchanger 2-3, and the waste heat boiler 2-2 is respectively connected with the first heat exchanger 2-3 and the reboiler 2-4; the first heat exchanger 2-3 is connected to the hot blast pipe 3-1 through the hot blast valve 1 and is connected with the exhaust chimney 2-5 through a ventilation pipeline, so that heat energy generated by the RTO heat storage oxidation furnace 3 can be skillfully introduced into the waste heat boiler 2-2, and under the auxiliary heating effect of the electric heater 2-2-2, the heat energy is reused into the reboiler 2-4 to provide heat energy for the reboiler 2-4, the value maximization of the heat energy utilization can be achieved, and the purpose of saving energy is achieved.
In the process of rectifying the product in the distillation tower 2-6, a large amount of precipitate is generated at the bottom of the tower, and therefore, in one embodiment of the present invention, as shown in fig. 1-2, the heat energy recycling device 2 may further include a steam dryer 2-7;
the steam dryer 2-7 is respectively connected with the distillation tower 2-6 and the waste heat boiler 2-2 and is used for drying and reducing precipitates in the distillation tower 2-6.
In the embodiment, the waste heat boiler 2-2 continuously provides heat energy to the steam dryer 2-7, so that the steam dryer 2-7 can dry and reduce the sediment in the distillation tower 2-6.
It can be seen that, in the technical scheme that the embodiment of the utility model provides, the steam dryer 2-7 of heat energy recycling device 2 respectively with distillation column 2-6 with exhaust-heat boiler 2-2 is connected to reach and right the sediment carries out drying minimizing to in the distillation column 2-6, not only makes exhaust-heat boiler 2-2's heat energy reach the utilization maximize, can also the energy saving, reduces production operation cost.
In one embodiment of the present invention, as shown in fig. 1-2, the first heat exchanger 2-3 and the ventilation duct between the exhaust chimney 2-5 are provided with a bypass duct, and the system further comprises: a purging fan 4 and a purging preheating control valve 5;
the purging fan 4 is used for being connected with a purging pipeline 3-2 at the bottom of the RTO heat storage oxidation furnace 3;
the purging fan 4 is further connected with the exhaust chimney 2-5 through the purging preheating control valve 5 by using the bypass pipeline, and is used for recycling the high-temperature gas discharged by the first heat exchanger 2-3 into the RTO thermal storage oxidation furnace 3 along with purging air generated by the purging fan 4 under the condition that the purging fan 4 is operated.
The function of the blowing wind is to fully burn the medium energy in the RTO heat-storage oxidation furnace 3 and to carry the preheated heat energy to flow back to the RTO heat-storage oxidation furnace 3 again, so as to achieve the purpose of energy conservation.
In view of the fact that the first heat exchanger 2-3 is respectively communicated with the RTO heat storage oxidation furnace 3 and the waste heat boiler 2-2, the first heat exchanger 2-3 is used for respectively replacing a part of heat energy of the RTO heat storage oxidation furnace 3 and the waste heat boiler 2-2 with hot water and guiding the part of heat energy to the waste heat boiler water supplementing tank 2-1, the other part of heat energy is introduced to a ventilation pipeline through gas, and the part of heat energy can be directly discharged through an exhaust chimney 2-5 or can be recycled to the RTO heat storage oxidation furnace 3 through a bypass pipeline by the aid of the purging preheating control valve 5 under the action of purging wind generated by the purging fan 4 so as to achieve recycling.
It can be seen that in the technical scheme provided in the embodiment of the present invention, the purging fan 4 for connecting with the purging pipeline 3-2 at the bottom of the RTO thermal storage oxidation furnace 3 still passes through the purging preheating control valve to utilize the bypass pipeline to connect with the exhaust chimney 2-5, and is used for recovering the high-temperature gas discharged from the first heat exchanger 2-3 along with the purging air generated by the purging fan 4 into the RTO thermal storage oxidation furnace 3 under the condition that the purging fan 4 is operated, so that not only the energy is recycled again, but also the consumption of the medium energy can be reduced, and further the purpose of saving the production cost is achieved.
In an embodiment of the present invention, as shown in fig. 1 to 2, the system may further include: a second heat exchanger 6;
the second heat exchanger 6 is connected to an exhaust pipeline 3-3 at the bottom of the RTO heat storage oxidation furnace 3 and is respectively communicated with the waste heat boiler water supplementing tank 2-1 and the exhaust chimney 2-5.
The second heat exchanger 6 can be a tube type heat exchanger in view of the characteristics of no vibration, capability of increasing heat exchange tubes, compact structure, reduction of fluid resistance, adoption of a tube plate formed by compounding stainless steel and carbon steel and the like.
In this embodiment, the exhaust pipe 3-3 at the bottom of the RTO regenerative thermal oxidation furnace 3 will also generate a large amount of high-temperature gas carrying heat energy, and in order to make the heat energy of the high-temperature gas in the exhaust pipe 3-3 reused, this embodiment is to guide the part of the heat energy to the waste heat boiler water replenishing tank 2-1 through the hot water replaced in the second heat exchanger 6, so as to achieve the purpose of reusing the heat energy.
In addition, the cooling gas discharged after the second heat exchanger 6 replaces the hot water can be directly discharged through the exhaust chimneys 2-5, or can be discharged through the bypass pipeline of the ventilation pipeline again, and under the condition that the purging fan 4 operates, the cooling gas is recycled into the RTO heat storage oxidation furnace 3 along with the purging wind generated by the purging fan 4.
It can be seen that in the technical scheme provided by the embodiment of the utility model, the second heat exchanger 6 of this system is connected on the exhaust duct 3-3 of RTO heat accumulation oxidation furnace 3 bottom to respectively with exhaust-heat boiler moisturizing pond 2-1 and exhaust stack 2-5 switch-on, can be with the hot water drainage of second heat exchanger 6 replacement to exhaust-heat boiler moisturizing pond 2-1 in, reach the purpose that heat energy was utilized once more, thereby reach energy-conserving purpose.
The high-temperature gas generated after the waste gas is incinerated in the RTO thermal storage oxidation furnace 3 mainly comprises carbon dioxide and water, and the high-temperature gas is not adsorbed by the adsorption filler, so that the high-temperature gas can be used for desorbing the adsorption filler in the desorption device, in an embodiment of the present invention, as shown in fig. 1-2, the system further comprises a desorption device 7 for high-temperature desorption of the waste gas;
the desorption device 7 is communicated with the hot blast valve 1 by utilizing the hot blast pipe 3-1.
The desorption method in this embodiment may be to flush the adsorbent packing with non-adsorbed gas to desorb the components adsorbed on the adsorbent packing.
In the present embodiment, high-temperature gases generated after incineration in the RTO thermal oxidation furnace 3 are mainly carbon dioxide and water vapor, and since these high-temperature gases are not adsorbed, the adsorbent saturated in adsorption can be desorbed using these high-temperature gases as a desorbent.
Based on the analysis, the heat of the high-temperature gas exhausted by the RTO heat storage oxidation furnace is recovered to the waste heat boiler water supplementing tank 2-1 by the hot blast valve, the second part is replaced to the waste heat boiler water supplementing tank 2-1 by the first heat exchanger 2-3, the third part is replaced to the waste heat boiler water supplementing tank 2-1 by the second heat exchanger, the fourth part is used as a desorption agent to perform desorption treatment on the adsorption saturated adsorbent, and the gas after desorption treatment is recovered to the RTO heat storage oxidation furnace 3, so that the heat energy exhausted by the RTO heat storage oxidation furnace 3 is subjected to multi-stage treatment and is fully utilized.
It is thus clear that the embodiment of the utility model provides an among the technical scheme, desorption apparatus 7 and the combustion chamber at RTO heat accumulation oxidation furnace 3 top of this system are connected, can utilize high-temperature gas to carry out the desorption processing to the absorbent packing in desorption apparatus 7, can make high-temperature gas carry out rational utilization.
In an embodiment of the present invention, as shown in fig. 1, the desorption device 7 may include: a third heat exchanger 7-1, a zeolite rotating wheel 7-2, a desorption preheating control valve 7-3, a dehumidifier air volume control valve 7-4 and a dehumidifier 7-5;
the third heat exchanger 7-1 sequentially passes through the hot blast valve 1 and the desorption preheating control valve 7-3, is communicated with a combustion chamber of the RTO heat storage oxidation furnace 3 by utilizing the hot blast pipe 3-1, is communicated with a desorption pipeline 7-2-1 of the zeolite rotating wheel 7-2, and is also connected with the dehumidifier 7-5 connected with an air inlet pipeline 7-2-2 of the zeolite rotating wheel 7-2 through the dehumidifier air volume control valve 7-4.
Wherein, the zeolite wheel 7-2 has the following characteristics:
1. the adsorption and desorption efficiency is high.
2. The pressure drop generated by the adsorption of VOCs by the zeolite rotating wheel 7-2 is extremely low, and the power consumption can be greatly reduced.
3. The original VOCs waste gas with high air volume and low concentration is converted into the waste gas with low air volume and high concentration, the concentration multiple reaches 5-20 times, the specification of post-treatment equipment is greatly reduced, and the operation cost is lower.
4. The whole system adopts a modularized design, has the minimum space requirement and provides a continuous and unmanned control mode.
5. The system is automatically controlled, is started by a single key, is simple to operate, and can be matched with a human-computer interface to monitor important operation data.
The third heat exchanger 7-1 is used for replacing high-temperature gas cooled by the hot blast valve 1. Under the condition that the desorption preheating control valve 7-3 is opened, high-temperature gas output by cooling through the hot blast valve 1 is converged into a desorption area in the zeolite rotating wheel 7-2 through the third heat exchanger 7-1.
In addition, the high-temperature gas after replacement by the third heat exchanger 7-1 can make the filler in the desorption area increase in temperature again in the desorption process, and the adsorption amount of the adsorption filler is reduced along with the increase in temperature, so that the temperature in the adsorption filler is increased under the action of the high-temperature gas, and part of the components adsorbed on the adsorption filler can be desorbed. However, during the desorption process, the temperature of the high-temperature gas after replacement in the third heat exchanger 7-1 should be lower than 130 degrees, so as to prevent unnecessary safety hazard caused by too high temperature during desorption.
The third heat exchanger 7-1 is also connected with a dehumidifier 7-5 connected with an air inlet pipeline 7-2-2 of the zeolite rotating wheel 7-2 through a dehumidifier air volume control valve 7-4, and the third heat exchanger 7-1 can carry out high-temperature dehumidification pretreatment on the waste gas under the condition that the dehumidifier air volume control valve 7-4 is opened.
It can be seen that in the technical scheme provided by the embodiment of the utility model, third heat exchanger 7-1 loops through hot-blast valve 1 with desorption preheating control valve 7-3, utilize hot-blast main 3-1 with the combustion chamber intercommunication at 3 tops of RTO heat accumulation oxidation furnace, and with desorption pipeline 7-2-1 intercommunication of zeolite runner 7-2, and through dehumidifier amount of wind control valve 7-4 still with connect on the admission line 7-2-2 of zeolite runner 7-2 dehumidifier 7-5 is connected, not only can carry out high temperature desorption to zeolite runner 7-2 waste gas, can also carry out the dehumidification preliminary treatment of waste gas high temperature.
In an embodiment of the present invention, as shown in fig. 2, the desorption device 7 may include: a third heat exchanger 7-1, a zeolite rotating wheel 7-2, a desorption preheating control valve 7-3, a dehumidifier 7-5, a desorption three-way valve 7-6 and a moisture meter 7-7 for measuring humidity;
the third heat exchanger 7-1 is communicated with the hot-blast valve 1 through the desorption preheating control valve by using the hot-blast pipe 3-1, and is respectively connected with a desorption pipeline 7-2-1 of the zeolite rotating wheel 7-2 and the dehumidifier 7-5 through the moisture detector 7-7 by using the desorption three-way valve 7-7;
the dehumidifier 7-5 is connected to the air inlet pipeline 7-2-2 of the zeolite rotating wheel 7-2.
Wherein, the third heat exchanger 7-1 is used for replacing high-temperature gas cooled by the hot blast valve 1. Under the condition that the desorption preheating control valve 5-3 is opened, part of high-temperature gas output by cooling through the hot blast valve 1 is converged into a desorption area in the zeolite rotating wheel 7-2 through the third heat exchanger 7-1.
In addition, the high-temperature gas after replacement by the third heat exchanger 7-1 can make the filler in the desorption area increase in temperature again in the desorption process, and the adsorption amount of the adsorption filler is reduced along with the increase in temperature, so that the temperature in the adsorption filler is increased under the action of the high-temperature gas, and part of the components adsorbed on the adsorption filler can be desorbed. However, during the desorption process, the temperature of the high-temperature gas after replacement in the third heat exchanger 7-1 should be lower than 130 degrees, so as to prevent unnecessary safety hazard caused by too high temperature during desorption.
The third heat exchanger 7-1 is also connected with a dehumidifier 7-55-5 connected with an air inlet pipeline 7-2-2 of the zeolite rotating wheel 7-2, and the third heat exchanger 7-1 can carry out high-temperature dehumidification pretreatment on the waste gas.
In one embodiment, a first valve port of the desorption three-way valve 7-7 is communicated with the desorption preheating control valve, a second valve port is communicated with the desorption pipeline 7-2-1 of the zeolite rotating wheel 7-2, and a third valve port is communicated with the dehumidifier 7-5.
Under the condition that the first valve port is communicated with the second valve port, part of high-temperature gas output by the hot blast valve 1 directly enters a desorption pipeline 7-2-1 of the zeolite rotating wheel 7-2 through a desorption three-way valve 7-7 to be subjected to desorption treatment.
Under the condition that the first valve port is communicated with the third valve port, part of high-temperature gas output by the hot-blast valve 1 enters a dehumidifier 7-5 through a pipeline for dehumidification, and the high-temperature gas after dehumidification directly carries out desorption treatment on the zeolite rotating wheel 7-2.
Under the condition that the first valve port is respectively communicated with the second valve port and the third valve port, one part of high-temperature gas output by the hot-blast valve 1 directly enters the desorption pipeline 7-2-1 of the zeolite rotating wheel 7-2 for desorption treatment, the other part of high-temperature gas enters the dehumidifier 7-5 for dehumidification treatment through a pipeline, and the high-temperature gas after dehumidification treatment directly carries out desorption treatment on the zeolite rotating wheel 7-2.
The moisture meter 7-7 is for measuring the humidity of the high temperature gas discharged from the hot blast valve 1. When the humidity measured by the moisture meter 7-7 is within a preset range, the first valve port is respectively communicated with the second valve port and the third valve port, which shows that the humidity of the high-temperature gas can be directly desorbed and can be desorbed after dehumidification, and the desorption efficiency is increased.
When the humidity measured by the moisture meter 7-7 is higher than the upper limit value of the preset range, the first valve port is communicated with the second valve port, which shows that the humidity of the high-temperature gas can be directly desorbed without dehumidification.
When the humidity measured by the moisture meter 7-7 is lower than the lower limit value of the preset range, the first valve port is communicated with the third valve port, which indicates that the humidity of the high-temperature gas is too high, and the high-temperature gas can be desorbed only by dehumidification.
Therefore, in the technical solution provided by the embodiment of the present invention, the third heat exchanger 7-1 is communicated with the hot blast valve 1 through the desorption preheating control valve 1-2, and is connected with the desorption pipeline 7-2-1 of the zeolite rotating wheel 7-2 and the dehumidifier 7-5 through the moisture detector 7-7 through the desorption three-way valve 7-7; the dehumidifier 7-5 is connected to the air inlet pipeline of the zeolite rotating wheel 7-2, so that the waste gas of the zeolite rotating wheel 7-2 can be subjected to high-temperature desorption, and the waste gas can be subjected to high-temperature dehumidification pretreatment.
In an embodiment of the present invention, the system further includes a control system, the control system is electrically connected to the temperature controller, and is configured to obtain the temperature measured by the temperature controller in real time, and start an alarm for indicating a 2-2 fault of the exhaust-heat boiler when the temperature measured by the temperature controller is not obtained;
the temperature of the waste heat boiler 2-2 measured by the temperature controller 2-2-1 is important for the operation of the control reboiler 2-4 or/and the steam dryer 2-7.
In order to increase the reliability of the system, the temperature measured by the temperature controller 2-2-1 can be displayed on an external display at any time, so that the staff can obtain the temperature in the waste heat boiler 2-2 in real time. And if the temperature measured by the temperature controller 2-2-1 is not obtained, the controller starts an alarm for representing the fault of the waste heat boiler 2-2.
It is thus clear that in the technical scheme that the embodiment of the utility model provides, the system can also include control system, control system with temperature controller 2-2-1 electricity is connected for acquire in real time temperature controller 2-2-1 measuring temperature, and when not acquiring temperature controller 2-2-1 measuring temperature, starts the alarm that is used for the sign temperature controller 2-2-1 trouble, can improve the reliability of this system.
In an embodiment of the present invention, the control system is further electrically connected to the desorption preheating control valve, the moisture meter 7-7, the desorption three-way valve 7-7 and the purging preheating control valve 5;
under the condition that desorption operation is determined, the desorption preheating control valve is opened, and if the humidity measured by the moisture meter 7-7 is within a preset range, the desorption three-way valve 7-7 is controlled so that the third heat exchanger 7-1 is respectively communicated with the desorption pipeline 7-2-1 and a pipeline connected with the dehumidifier 7-5;
if the humidity measured by the moisture meter 7-7 is higher than the upper limit value of the preset range, controlling the desorption three-way valve 7-7 to enable the third heat exchanger 7-1 to be communicated with a pipeline connected with the dehumidifier 7-5;
and if the humidity measured by the moisture meter 7-7 is lower than the lower limit value of the preset range, controlling the desorption three-way valve 7-7 to enable the third heat exchanger 7-1 to be communicated with the desorption pipeline 7-2-1.
The control system is electrically connected with the purging preheating control valve 5 and is used for controlling the opening and closing of the purging preheating control valve 5, when the heat of the ventilation pipeline needs to be recovered, the purging preheating control valve 5 needs to be opened, when the heat of the recovered ventilation pipeline is reduced, the heat does not need to be collected again, the purging preheating control valve 5 is closed, and the heat is directly discharged from the exhaust chimney 2-5.
In one embodiment, a temperature meter may be disposed in the ventilation duct, and when the temperature meter measures that the gas temperature of the ventilation duct is higher than a preset value, the purge preheating control valve 5 is controlled to be opened. And when the temperature instrument measures that the gas temperature of the ventilation pipeline is lower than a preset value, controlling the purging preheating control valve 5 to be closed.
Based on the analysis, after receiving the desorption operation, the control system opens the desorption preheating control valve, and if the humidity measured by the moisture meter 7-7 is within a preset range, the first valve port is communicated with the second valve port and the third valve port, so that the third heat exchanger 7-1 is respectively communicated with the desorption pipeline 7-2-1 and the pipeline connected with the dehumidifier 7-5;
if the humidity measured by the moisture meter 7-7 is higher than the upper limit value of the preset range, the first valve port is communicated with the second valve port, so that the third heat exchanger 7-1 is communicated with a pipeline connected with the dehumidifier 7-5;
if the humidity measured by the moisture meter 7-7 is lower than the lower limit value of the preset range, the first valve port is communicated with the third valve port, so that the third heat exchanger 7-1 is communicated with the desorption pipeline 7-2-1.
It is thus clear that the embodiment of the utility model provides an in the technical scheme that provides, still all the desorption preheat the control valve the hygrometer 7-7 the desorption three-way valve 7-7 with it connects the electricity to sweep 5 electricity of preheating the control valve and connect, not only can provide the intellectuality of this system, can also improve the controllability of this system, reduces staff's work risk, and then further save labour and cost.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a device that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such device. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a device that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. A thermal energy recycling system for use in an RTO regenerative thermal oxidizer, the system comprising: a hot blast valve and a heat energy recycling device;
the hot blast valve is arranged on a hot blast pipe of the combustion chamber output gas of the RTO heat storage oxidation furnace, is used for absorbing the heat energy of the combustion chamber output gas and outputs the gas after absorbing the heat energy through the hot blast pipe;
the hot blast valve is also connected with the heat energy recycling device and used for providing heat energy for the heat energy recycling device so that the heat energy recycling device recycles the heat energy exhausted by the combustion chamber.
2. The system of claim 1, wherein the hot blast valve is a valve body with a hollow structure, and the valve body is filled with a high temperature resistant material;
and the water outlet of the valve body is connected with the heat energy recycling device and is used for refluxing the circulating water in the valve plate to the heat energy recycling device.
3. The system of claim 2, wherein the thermal energy recycling device comprises a waste heat boiler makeup tank, a waste heat boiler with a temperature controller and an electric heater, a first heat exchanger, a reboiler, and an exhaust stack;
the waste heat boiler water supplementing tank is connected with the hot blast valve, the waste heat boiler and the first heat exchanger;
the waste heat boiler is respectively connected with the first heat exchanger and the reboiler, and the electric heater is started to heat when the temperature controller measures that the temperature in the waste heat boiler is lower than a threshold value;
the first heat exchanger is communicated with the hot blast valve through the hot blast pipe and is connected with the exhaust chimney through the ventilation pipeline.
4. The system of claim 3, wherein the thermal energy reuse device further comprises a distillation column and a steam dryer;
the distillation column is connected with the reboiler;
and the steam dryer is respectively connected with the distillation tower and the waste heat boiler and is used for drying and reducing precipitates in the distillation tower.
5. The system of any one of claims 3 to 4, wherein the ventilation duct between the first heat exchanger and the exhaust stack is provided with a bypass duct, the system further comprising: a purging fan and a purging preheating control valve;
the purging fan is used for being connected with a purging pipeline 3-2 at the bottom of the RTO heat storage oxidation furnace;
the purging fan is further connected with the exhaust chimney through the purging preheating control valve by means of the bypass pipeline, and is used for recycling high-temperature gas exhausted by the first heat exchanger to the RTO thermal storage oxidation furnace along with purging wind generated by the purging fan under the condition that the purging fan is operated.
6. The system of claim 5, further comprising: a second heat exchanger;
and the second heat exchanger is connected to an exhaust pipeline at the bottom of the RTO heat storage oxidation furnace and is respectively communicated with the waste heat boiler water replenishing tank 2-1 and the exhaust chimney.
7. The system of claim 1, further comprising a desorption device for high temperature desorption of the exhaust gas;
the desorption device is communicated with the hot blast valve by utilizing the hot blast pipe.
8. The system of claim 7, wherein the desorption device comprises: the third heat exchanger, the zeolite rotating wheel, the desorption preheating control valve, the dehumidifier air volume control valve and the dehumidifier;
the third heat exchanger is communicated with a combustion chamber at the top of the RTO heat storage oxidation furnace through the hot blast valve and the desorption preheating control valve in sequence, is communicated with the desorption pipeline of the zeolite rotating wheel and is also connected with the dehumidifier connected to the air inlet pipeline of the zeolite rotating wheel through the dehumidifier air volume control valve.
9. The system of claim 7, wherein the desorption device comprises: the third heat exchanger, the zeolite rotating wheel, the desorption preheating control valve, the desorption three-way valve, the dehumidifier and the moisture meter for measuring the humidity;
the third heat exchanger is communicated with the hot blast valve through the desorption preheating control valve by utilizing the hot blast pipe, and is respectively connected with the desorption pipeline of the zeolite rotating wheel and the dehumidifier by utilizing the desorption three-way valve through the moisture meter;
the dehumidifier is connected to the air inlet pipeline of the zeolite rotating wheel.
10. The system of claim 6, wherein the second heat exchanger is a shell and tube heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021638059.0U CN212805676U (en) | 2020-08-07 | 2020-08-07 | Heat energy recycling system applied to RTO heat storage oxidation furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021638059.0U CN212805676U (en) | 2020-08-07 | 2020-08-07 | Heat energy recycling system applied to RTO heat storage oxidation furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212805676U true CN212805676U (en) | 2021-03-26 |
Family
ID=75082112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021638059.0U Active CN212805676U (en) | 2020-08-07 | 2020-08-07 | Heat energy recycling system applied to RTO heat storage oxidation furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212805676U (en) |
-
2020
- 2020-08-07 CN CN202021638059.0U patent/CN212805676U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206045771U (en) | Organic exhaust gas total system | |
| CN104033912A (en) | Device used for waste gas treatment and recycling | |
| KR101617083B1 (en) | Equipment and method for processing volatile organic compound | |
| CN103463932B (en) | Method and device for treating and recycling organic exhaust gas with low concentration and large air volume | |
| CN110508057A (en) | Exhaust gas purifying method and system in a kind of lithium battery removal process | |
| CN103306717B (en) | Countercurrent oxidation and waste heat utilization method after ventilation air methane concentration | |
| CN106090971A (en) | A kind of combined steam flue gas MGGH system and method | |
| CN107198947A (en) | Recovery of latent heat purifier | |
| CN211070117U (en) | Device for regenerating adsorbent and recovering organic compound by utilizing hot nitrogen | |
| CN212805676U (en) | Heat energy recycling system applied to RTO heat storage oxidation furnace | |
| CN205412650U (en) | Purifier is retrieved to latent heat | |
| CN111911941A (en) | Comprehensive utilization system for waste gas treatment heat energy | |
| CN206176412U (en) | Energy -saving organic waste gas waste heat utilization equipment | |
| CN206257687U (en) | A kind of combined steam flue gas MGGH systems | |
| CN107344069A (en) | A kind of organic waste gas treatment device | |
| CN111228958A (en) | Activated carbon adsorption and desorption method and device | |
| CN208727105U (en) | A kind of solvent recovery adds RTO combined type exhaust treatment system | |
| CN208694613U (en) | A kind of nitrogen desorption condensate recycling device | |
| CN115089992B (en) | Shallow cooling adsorption and desorption VOCs gas recovery method | |
| CN208019112U (en) | VOCs processing equipments suitable for printing machine | |
| CN204176655U (en) | For the device of exhaust-gas treatment and recycle and reuse | |
| CN210891693U (en) | Energy-saving low temperature methanol washing tail gas processing apparatus | |
| CN208032239U (en) | A kind of VOCs high-level cleaners | |
| CN104524970B (en) | A kind of selexol process exhaust gas purification system taking low-quality waste heat source as power | |
| CN203571696U (en) | Flue gas waste heat recovery system in metallurgical off-gas acid-making process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 450000 No. 906, floor 9, building 2, Xinghua science and Technology Industrial Park, west of the second street, south of Jingnan 1st Road, Zhengzhou area (Economic Development Zone), Zhengzhou pilot Free Trade Zone, Henan Province Patentee after: Huaxia Bishui Environmental Protection Technology Co.,Ltd. Address before: 450000 Henan Zhengzhou economic and Technological Development Zone Second Avenue West, south of the road south, Xinghua science and Technology Industrial Park 2 Building 9 floor 906. Patentee before: HUAXIA BISHUI ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. |
|
| CP03 | Change of name, title or address |