CN210373484U - Thermoprinting and surface waste gas catalytic oxidation treatment and heat energy recovery device - Google Patents
Thermoprinting and surface waste gas catalytic oxidation treatment and heat energy recovery device Download PDFInfo
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- CN210373484U CN210373484U CN201921110828.7U CN201921110828U CN210373484U CN 210373484 U CN210373484 U CN 210373484U CN 201921110828 U CN201921110828 U CN 201921110828U CN 210373484 U CN210373484 U CN 210373484U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The utility model relates to an organic waste gas treatment technology aims at providing a thermoprint and table department waste gas catalytic oxidation handle and heat recovery unit. The method comprises the following steps: the prefilter is arranged on an inlet pipeline of the air feeder, and an outlet pipeline of the air feeder is connected to an inlet of the catalytic oxidation device; the latter is in a cavity shape, and the inside of the latter is divided into a heating chamber and a catalytic oxidation chamber; at least two heat exchangers are arranged at the front end of the heating chamber in series, and the rear end of the heating chamber keeps a cavity shape; a honeycomb ceramic catalyst is filled in the catalytic oxidation chamber positioned at the rear end of the heating chamber; the outlet of the device is connected with the heat recycling heat exchanger and the discharge port through pipelines, and the cooling air inlet is sequentially connected with the recycling heat exchanger, the exhaust fan and the hot stamping and surface operating device through pipelines. The utility model discloses can utilize catalytic combustion technology to handle organic waste gas, the high temperature waste gas heating low temperature waste gas that make full use of catalytic combustion produced, with the heat energy reuse of waste gas in thermoprint and table department. The device has the advantages of high treatment efficiency, good heat exchange effect, low energy consumption and high safety.
Description
Technical Field
The utility model relates to an organic waste gas treatment technical field, concretely relates to thermoprint and table department waste gas catalytic oxidation handle and heat recovery unit.
Background
In the hot stamping and surface processing process of the printing industry, organic waste gas with certain concentration is volatilized from drying tunnels and liquid storage tanks of a hot stamping machine and a surface processing machine. The concentration of the collected organic waste gas is greatly changed (the range is 0.2 mg/m) according to different production rhythms3-5mg/m3). The current organic waste gas treatment methods mainly comprise: organic waste gas in drying tunnels of the hot stamping machine and the surface treatment machine is extracted through pipelines, and the volatile organic waste gas in the liquid storage tank is collected through a gas collecting hood. The collected part of waste gas is directly treated by methods such as catalytic oxidation or thermal incineration, so that volatile organic compounds in the waste gas are decomposed into carbon dioxide and water. For organic waste gas discharged in a workshop in an unorganized way, a fixed bed adsorption treatment process is generally used. Or, the catalytic oxidation or thermal incineration and the fixed bed adsorption treatment process are combined for use, and the organic waste gas is treated.
However, when the above two methods are used for catalytic oxidation treatment, the organic waste gas is heated to the initial oxidation temperature of 250-300 ℃ and the gas temperature after catalytic oxidation can reach 250-450 ℃. Generally, the catalytic oxidation device exchanges heat between the gas after catalytic oxidation and the entering organic waste gas and then discharges the gas, but the gas after heat exchange still has higher temperature and wastes heat energy.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome not enough among the prior art, provide a thermoprint and table department waste gas catalytic oxidation processing and heat recovery device.
For solving the technical problem, the utility model discloses a solution is:
the device comprises a blower for leading out organic waste gas from a hot stamping and surface operation device; a prefilter is arranged on an inlet pipeline of a blower, and an outlet pipeline of the blower is connected to an inlet of a catalytic oxidation device; the catalytic oxidation device is in a cavity shape, and the interior of the catalytic oxidation device is divided into a heating chamber and a catalytic oxidation chamber; at least two heat exchangers are arranged at the front end of the heating chamber in series, and the rear end of the heating chamber keeps a cavity shape; a formed honeycomb ceramic catalyst loaded with noble metal palladium and platinum is filled in the catalytic oxidation chamber; the flow path of the organic exhaust gas in the catalytic oxidation device is: the waste water enters the catalytic oxidation chamber through the heat exchangers arranged in series and the rear ends of the cavity-shaped heating chambers, then enters the heat exchangers connected in series from the outlets of the catalytic oxidation chamber, and flows out from the outlets of the catalytic oxidation devices after reverse sequential heat exchange; the outlet of the catalytic oxidation device is connected with the heat recycling heat exchanger and the discharge port through pipelines, and the cooling air inlet is sequentially connected with the recycling heat exchanger, the exhaust fan and the hot stamping and surface operation device through pipelines.
As an improvement, the heat exchanger arranged in series in the catalytic oxidation device is a plate heat exchanger, a finned heat exchanger or a tubular heat exchanger.
As an improvement, a heater and a temperature sensor are arranged at the rear end of the cavity-shaped heating chamber at the same time, the heater and the temperature sensor are respectively connected to a controller through signal wires, and the heater is a hot air heater or an electric heater.
As an improvement, a multi-stage filter bag made of synthetic fibers, non-woven fabrics or glass fibers is arranged in the prefilter.
As an improvement, the air blower is a variable frequency fan, and a sound insulation box is sleeved outside the air blower.
As an improvement, the outlet of the catalytic oxidation device is connected to the tube side or shell side inlet of the heat recycling heat exchanger, and the tube side or shell side outlet of the recycling heat exchanger is connected to the discharge port; the tube side or shell side inlet of the recycling heat exchanger is connected to the cooling air inlet, and the tube side or shell side outlet of the recycling heat exchanger is connected to the exhaust fan.
As an improvement, a temperature sensor is respectively arranged on an outlet pipeline of the catalytic oxidation device and an inlet pipeline of the exhaust fan.
As an improvement, the inlet and the outlet of the catalytic oxidation device are arranged at the bottom position.
As an improvement, the air blowers are provided with a plurality of inlets which are respectively connected to a hot stamping production waste gas inlet, a hot stamping sample making waste gas inlet and a surface production waste gas inlet through pipelines; the pipelines at the front ends of the blowers are respectively provided with a prefilter, and the outlet pipelines of the blowers are connected to the inlet of the catalytic oxidation device.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses can utilize catalytic combustion technology to handle organic waste gas, the high temperature waste gas heating low temperature waste gas that make full use of catalytic combustion produced, the while is used for thermoprint and table department with the heat energy reuse of waste gas.
2. When the device uses, high temperature waste gas is the circuitous way of door style of calligraphy route to make high temperature waste gas and low temperature waste gas abundant heat transfer, this improves the heat transfer effect greatly.
3. For other treatment facility, device treatment effeciency is high, and the energy consumption is lower, and the security is higher.
Drawings
FIG. 1 is the schematic structural diagram of the device for catalytic oxidation treatment of waste gas and heat recovery for hot stamping and surface.
Reference numbers in the figures: 1. the device comprises a first prefilter, a second prefilter, a third prefilter, a first air feeder, a second air feeder, a 6 third air feeder, a 7 catalytic oxidation device, a 8 catalytic oxidation chamber, a 9 second high-temperature heat exchanger, a 10 first high-temperature heat exchanger, a 11 heater, a 12 heat recycling heat exchanger, a 13 exhaust fan, a T1 first temperature sensor, a T2 second temperature sensor, a T3 third temperature sensor, a hot stamping production waste gas inlet, b hot stamping sample making waste gas inlet, c meter production waste gas inlet, d catalytic oxidation device inlet, e catalytic oxidation device outlet, f heat recycling heat exchanger tube pass outlet, g heat recycling heat exchanger shell pass inlet, and h heat recycling outlet.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
The hot stamping and surface waste gas catalytic oxidation treatment and heat energy recovery device comprises three air blowers (a first air blower 4, a second air blower 5 and a third air blower 6), wherein inlets of the three air blowers are respectively connected to a hot stamping production waste gas inlet a, a hot stamping proofing waste gas inlet b and a surface production waste gas inlet c through pipelines; the front end pipeline of each blower is respectively provided with a prefilter (a first prefilter 1, a second prefilter 2 and a third prefilter 3), and the outlet pipelines of the three blowers are all connected to the inlet of a catalytic oxidation device 7. The frequency conversion fan can be selected to the forced draught blower, establishes the sound-proof box in its outside cover and can completely cut off the noise.
The catalytic oxidation device 7 is in a cavity shape, and the interior of the catalytic oxidation device is divided into a heating chamber and a catalytic oxidation chamber 8; two heat exchangers (a first high-temperature heat exchanger 10 and a second high-temperature heat exchanger 9) are arranged at the front end of the heating chamber in series, and the rear end of the heating chamber keeps a cavity shape; the two heat exchangers can be plate heat exchangers, fin heat exchangers or tubular heat exchangers. The heater 11 and the first temperature sensor T1 are provided at the rear end of the cavity-shaped heating chamber, and both are connected to the controller via signal lines, and the heater 11 is preferably a hot air heater or an electric heater. The catalytic oxidation chamber 7 is filled with a formed honeycomb ceramic catalyst (a conventional commercial honeycomb ceramic catalyst, for example, having a pore size of 200 mesh and a noble metal content of 350 g/m) loaded with noble metal palladium and platinum3However, the present invention is not limited to the selection of the catalyst). The flow path of the organic exhaust gas in the catalytic oxidation unit 7 is: the waste water enters the catalytic oxidation chamber 7 through the two heat exchangers arranged in series and the rear end of the cavity-shaped heating chamber, then enters the heat exchangers connected in series from the outlet of the catalytic oxidation chamber 7, and flows out from the outlet of the catalytic oxidation device 7 after reverse sequential heat exchange; the outlet of the catalytic oxidation device 7 is connected with the heat recycling heat exchanger 12 and the discharge port through pipelines, and the cooling air inlet is sequentially connected with the recycling heat exchanger 12, the exhaust fan 13 and the hot stamping and surface operation device through pipelines. The tube heat exchanger is used for illustrating the connection mode: the outlet of the catalytic oxidation device 7 is connected to the tube pass inlet of the heat reuse heat exchanger 12, and the tube pass outlet is connected to the discharge port; recycling of the shell side inlet of the heat exchanger 12The inlet is connected to a cooling air inlet, and the shell side outlet is connected to an exhaust fan 13. A second temperature sensor T2 and a third temperature sensor T3 are respectively arranged on an outlet pipeline of the catalytic oxidation device 7 and an inlet pipeline of the exhaust fan 13, the fresh air intake quantity of the heat recycling heat exchanger 12 can be adjusted according to the temperature, the temperature of recycled hot air is further controlled, and the heat is fully utilized. The inlet and outlet of the catalytic oxidation unit 7 are both provided at the bottom position.
Utilize the utility model discloses the engineering case of handling thermoprint and table department waste gas as follows:
a workshop of a certain printing textile enterprise is provided with a thermoprinting machine and a surface machine, and the thermoprinting machine can process air quantity 6046Nm during proofing3H, average concentration 1g/m3Air quantity 8367Nm processed during production of hot stamping machine3H, average concentration 2.4g/m3(ii) a 25192Nm processed air quantity during production of surface treatment machine3H, average concentration 2.7g/m3；
According to the existing situation, the project adopts a catalytic oxidation treatment and heat energy recovery device to treat 36000Nm of air volume311218Nm of hot recycling air volume3H, temperature 80 ℃.
Waste gas generated by the hot stamping machine and the surface treatment machine respectively enters the catalytic combustion device 7 through the first pre-filter 1, the second pre-filter 2, the third pre-filter 3 and the first air feeder 4, the second air feeder 5 and the third air feeder 6, the waste gas sequentially passes through the first high-temperature heat exchanger 10 and the second high-temperature heat exchanger 9 to be heated, the waste gas is further heated through the heater 11 and then enters the catalytic combustion chamber 8, the waste gas after catalytic combustion sequentially passes through the second high-temperature heat exchanger 9 and the first high-temperature heat exchanger 10 to be cooled, the waste gas is discharged from the catalytic combustion device, heat is exchanged for air through the heat reuse heat exchanger 12 and then is discharged to the atmosphere, and the high-temperature air after heat exchange is sent to the hot stamping machine and the surface treatment operation device through the exhaust fan 13 to be recycled.
The pre-filter is used for pre-treating the waste gas, and can effectively reduce dust particles in the waste gas. The filter cotton adopts four-stage filtration, and non-woven fabric filter cotton of a coarse effect grade (G4), a medium effect grade (F5), a high and medium effect grade (F7) and a sub-high effect grade (F9) are sequentially used as the filter cotton.
The two heat exchangers connected in series can recover the heat energy of the high-temperature gas after catalytic oxidation for heating the untreated waste gas, and can effectively reduce energy consumption. And because the plate heat exchanger has the characteristics of high heat transfer coefficient, low thermal resistance, small fouling coefficient, compact structure and the like, the plate heat exchanger is preferred. The heater and the first temperature sensor are arranged, the heating capacity of the heater 11 can be adjusted according to the temperature of the waste gas after heat exchange, the waste gas entering the catalytic combustion chamber 8 is guaranteed to be kept in the optimal temperature range, and the utilization rate of energy is effectively improved.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.
Claims (9)
1. A thermoprinting and surface exhaust gas catalytic oxidation treatment and heat energy recovery device comprises a blower for leading out organic exhaust gas from a thermoprinting and surface operation device; the device is characterized in that a prefilter is arranged on an inlet pipeline of a blower, and an outlet pipeline of the blower is connected to an inlet of a catalytic oxidation device; the catalytic oxidation device is in a cavity shape, and the interior of the catalytic oxidation device is divided into a heating chamber and a catalytic oxidation chamber; at least two heat exchangers are arranged at the front end of the heating chamber in series, and the rear end of the heating chamber keeps a cavity shape; a formed honeycomb ceramic catalyst loaded with noble metal palladium and platinum is filled in the catalytic oxidation chamber; the flow path of the organic exhaust gas in the catalytic oxidation device is: the waste water enters the catalytic oxidation chamber through the heat exchangers arranged in series and the rear ends of the cavity-shaped heating chambers, then enters the heat exchangers connected in series from the outlets of the catalytic oxidation chamber, and flows out from the outlets of the catalytic oxidation devices after reverse sequential heat exchange; the outlet of the catalytic oxidation device is connected with the heat recycling heat exchanger and the discharge port through pipelines, and the cooling air inlet is sequentially connected with the recycling heat exchanger, the exhaust fan and the hot stamping and surface operation device through pipelines.
2. The device for catalytic oxidation treatment of hot stamping and surface exhaust gas and recovery of heat energy as claimed in claim 1, wherein the heat exchangers arranged in series in the catalytic oxidation device are plate heat exchangers, finned heat exchangers or tubular heat exchangers.
3. The device for catalytic oxidation treatment of hot stamping and surface exhaust gas and recovery of heat energy as claimed in claim 1, wherein a heater and a temperature sensor are simultaneously installed at the rear end of the cavity-shaped heating chamber, and both are respectively connected to the controller through signal lines, and the heater is a hot air heater or an electric heater.
4. The device for catalytic oxidation treatment of hot stamping and surface exhaust gases and recovery of heat energy as claimed in claim 1, wherein the pre-filter is provided with multi-stage filter bags made of synthetic fibers, non-woven fabrics or glass fibers.
5. The apparatus for catalytic oxidation treatment of hot stamping and surface exhaust gases and recovery of heat energy as claimed in claim 1, wherein the blower is a variable frequency blower, and a sound insulation box is sleeved outside the blower.
6. The device for catalytic oxidation treatment and heat energy recovery of hot stamping and surface exhaust gas as claimed in claim 1, wherein an outlet of the catalytic oxidation device is connected to a tube-side or shell-side inlet of a heat recycling heat exchanger, and a tube-side or shell-side outlet of the recycling heat exchanger is connected to a discharge port; the tube side or shell side inlet of the recycling heat exchanger is connected to the cooling air inlet, and the tube side or shell side outlet of the recycling heat exchanger is connected to the exhaust fan.
7. The device for catalytic oxidation treatment of waste gas in thermoprinting and surface and recovery of heat energy as claimed in claim 1, wherein temperature sensors are respectively arranged on the outlet pipeline of the catalytic oxidation device and the inlet pipeline of the exhaust fan.
8. The device for catalytic oxidation treatment of hot stamping and surface exhaust gases and recovery of heat energy as claimed in claim 1, wherein the inlet and outlet of the catalytic oxidation device are both arranged at the bottom position.
9. The apparatus for catalytic oxidation treatment of hot stamping and surface exhaust gas and recovery of heat energy as claimed in any one of claims 1 to 8, wherein there are a plurality of said blowers, and the inlets thereof are respectively connected to the hot stamping production exhaust gas inlet, the hot stamping proofing exhaust gas inlet and the surface production exhaust gas inlet through pipes; the pipelines at the front ends of the blowers are respectively provided with a prefilter, and the outlet pipelines of the blowers are connected to the inlet of the catalytic oxidation device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921110828.7U CN210373484U (en) | 2019-07-16 | 2019-07-16 | Thermoprinting and surface waste gas catalytic oxidation treatment and heat energy recovery device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921110828.7U CN210373484U (en) | 2019-07-16 | 2019-07-16 | Thermoprinting and surface waste gas catalytic oxidation treatment and heat energy recovery device |
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| CN210373484U true CN210373484U (en) | 2020-04-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110260344A (en) * | 2019-07-16 | 2019-09-20 | 江苏安琪尔废气净化有限公司 | Exhaust fume catalytic oxidation processes and heat-energy recovering apparatus at a kind of thermoprint and table |
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2019
- 2019-07-16 CN CN201921110828.7U patent/CN210373484U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110260344A (en) * | 2019-07-16 | 2019-09-20 | 江苏安琪尔废气净化有限公司 | Exhaust fume catalytic oxidation processes and heat-energy recovering apparatus at a kind of thermoprint and table |
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