CN210088887U - Low-temperature exhaust gas catalytic treatment device - Google Patents
Low-temperature exhaust gas catalytic treatment device Download PDFInfo
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- CN210088887U CN210088887U CN201920765007.0U CN201920765007U CN210088887U CN 210088887 U CN210088887 U CN 210088887U CN 201920765007 U CN201920765007 U CN 201920765007U CN 210088887 U CN210088887 U CN 210088887U
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Abstract
The embodiment of the utility model discloses low temperature exhaust gas catalytic treatment device, include: an exhaust pipe comprising a smoke inlet end and a smoke outlet end; the catalytic box is arranged on one side, close to the smoke outlet end, in the exhaust pipe; the heat exchanger is arranged on one side, close to the smoke inlet end, in the exhaust gas pipe; the circulating pipeline comprises a first heat exchange pipe, a second heat exchange pipe, a three-way valve and a radiator; and a water pump disposed on the circulation pipe. This device passes through heat exchanger heating low temperature waste gas, makes the temperature of low temperature waste gas rise, then the coolant liquid passes through the radiator cooling and becomes low temperature coolant liquid, the heat that absorbs waste gas catalytic combustion production becomes high temperature coolant liquid in the second heat exchange tube, avoid the catalyst to heat up and reduce catalytic activity, high temperature coolant liquid is carried and is used for heating low temperature waste gas in the first heat exchanger, the heat that utilizes catalytic combustion to produce preheats waste gas, energy consumption when effectively having reduced the equipment use.
Description
Technical Field
The utility model relates to a low temperature exhaust-gas treatment technical field especially relates to low temperature exhaust-gas catalytic treatment device.
Background
The catalytic combustion of waste gas is to oxidize the hydrocarbon in organic waste gas into water and carbon dioxide quickly under the action of catalyst to reach the aim of treating. The catalytic combustion can realize complete combustion of fuel at a lower temperature, has very important effects on the aspects of improving the combustion process, reducing the reaction temperature, promoting complete combustion, inhibiting the formation of toxic and harmful substances and the like, and is an environment-friendly process.
The key to catalytic combustion reactions is the selection of a suitable catalyst. The requirements for the catalyst are: the activity is high, in particular good at low temperatures, in order to start the reaction at as low a temperature as possible. However, because the combustion reaction is an exothermic reaction, a large amount of heat is released to enable the surface of the catalyst to rapidly reach a high temperature of 500-1000 ℃, so that the activity of the catalyst is easily reduced due to melting.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome above-mentioned technique not enough, provide low temperature exhaust gas catalytic treatment device, solve among the prior art low temperature waste gas when catalytic combustion handles, low temperature waste gas need preheat, need again after the burning to catalyst cooling, two processes can not comprehensive utilization lead to the higher technical problem of energy consumption.
In order to achieve the technical purpose, the embodiment of the utility model provides a low temperature exhaust gas catalytic treatment device is provided, this low temperature exhaust gas catalytic treatment device includes: an exhaust pipe comprising a smoke inlet end and a smoke outlet end; the catalytic box is arranged on one side, close to the smoke outlet end, in the exhaust pipe; the heat exchanger is arranged on one side, close to the smoke inlet end, in the exhaust gas pipe; the circulating pipeline comprises a first heat exchange pipe, a second heat exchange pipe, a three-way valve and a radiator, wherein the first heat exchange pipe is arranged across the heat exchanger, the water inlet end of the first heat exchange pipe is communicated with a first interface of the three-way valve, the water outlet end of the first heat exchange pipe is communicated with the water inlet end of the radiator, the second heat exchange pipe is arranged across the catalytic box, the water inlet end of the second heat exchange pipe is communicated with the water outlet end of the radiator, the water outlet end of the second heat exchange pipe is communicated with a second interface of the three; and a water pump disposed on the circulation pipe.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses a low temperature waste gas catalytic treatment device passes through heat exchanger heating low temperature waste gas, the temperature that makes low temperature waste gas risees to the highest temperature interval of catalyst activity, then the coolant liquid passes through the radiator and cools down into low temperature coolant liquid, some low temperature coolant liquid absorbs the heat that waste gas catalytic combustion produced in the second heat exchange tube and becomes high temperature coolant liquid, avoid the catalyst to heat up and reduce catalytic activity, reduce suitable temperature after high temperature coolant liquid mixes with another part low temperature coolant liquid, be used for heating low temperature waste gas in carrying first heat exchanger, the three-way valve is used for adjusting the mixing proportion of high temperature coolant liquid and low temperature coolant liquid, make it can heat low temperature waste gas to suitable temperature, the heat that utilizes catalytic combustion to produce preheats waste gas, the energy consumption when effectively having reduced equipment use.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a low-temperature exhaust gas catalytic treatment device provided by the present invention;
fig. 2 is a front view of the catalyst cartridge of fig. 1.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an embodiment of a low-temperature exhaust gas catalytic treatment device provided in the present invention; fig. 2 is a front view of the catalytic cartridge of fig. 1.
The low-temperature exhaust gas catalytic treatment device provided by the embodiment comprises: an exhaust pipe 1, a catalytic box 2, a heat exchanger 3, a circulating pipeline and a water pump 5.
The waste gas pipe 1 comprises a smoke inlet end and a smoke outlet end, and low-temperature waste gas enters from the smoke inlet end and is discharged from the smoke outlet end after being processed. Along the direction of exhaust gas motion, arrange heat exchanger 3 and catalysis box 2 in proper order in exhaust pipe 1, catalysis box 2 arranges in exhaust pipe promptly and is close to out cigarette end one side, and heat exchanger 3 arranges in exhaust pipe and is close to into cigarette end one side. The catalyst box 2 is provided with a plurality of air holes 21 for exhaust gas to pass through the catalyst box 2, and generally speaking, the number of the air holes 21 is a plurality, and the air holes can be arranged according to actual needs. The catalyst is placed in the catalyst box 2 according to the type of the exhaust gas, for example, when the exhaust gas is a combustible organic matter such as alkane, the catalyst can be selected from a metal or a metal oxide and placed in the catalyst box 3. The exhaust gas enters the catalytic box 3 through the air holes 21 and is catalytically combusted by the catalyst in the catalytic box 3.
The circulation pipe includes a first heat exchange pipe 41, a second heat exchange pipe 42, a three-way valve 43, and a radiator 44. The first heat exchange tube 41 is arranged across the heat exchanger 3, the water inlet end of the first heat exchange tube 41 is communicated with the first interface of the three-way valve 43, and the water outlet end of the first heat exchange tube 41 is communicated with the water inlet end of the radiator 44. The second heat exchange tube 42 traverses the catalytic box 2, the water inlet end of the second heat exchange tube 42 is communicated with the water outlet end of the radiator 44, and the water outlet end of the second heat exchange tube 42 is communicated with the second interface of the three-way valve 43. The third port of the three-way valve 43 is communicated with the water outlet end of the radiator 44.
The water pump 5 is disposed on the circulation pipe for driving the flow of the coolant in the circulation pipe.
In the present embodiment, the water pump 5 is disposed between the first heat exchanging pipe 41 and the radiator 44 for smoother flow of the coolant. As a preferred embodiment, the water pumps 5 may be provided in two, respectively disposed up and down between the three-way valve 43 and the water pump 5.
For better heat dissipation of the catalyst in the catalyst box 2, the portion of the second heat exchange pipe 42 located in the catalyst box 2 is split into a plurality of pieces to increase the heat exchange area and speed. Meanwhile, the portion of the second heat exchange pipe 42 located inside the catalyst cartridge 2 is also perpendicular to the direction of flow of the exhaust gas to facilitate heat exchange.
In order to better ensure that the catalyst in the catalytic box 2 is in the temperature interval with the highest activity, the low-temperature exhaust gas catalytic treatment device also comprises a temperature measuring instrument 6. The measuring end of the temperature measuring instrument 6 is arranged in the catalyst box 2, and the display end is arranged outside the catalyst box 2. When the exhaust gas catalytic combustion treatment device is used, the power of the water pump 5 can be controlled according to the numerical value of the catalyst temperature actually measured by the temperature measuring instrument 6. When the temperature of the catalyst is too high, the power of the water pump 5 is increased, the flow of cooling liquid is accelerated, and the temperature of the catalyst is reduced; when the temperature of the catalyst is too low, the power of the water pump 5 is reduced, the flow of cooling water is slowed down, and the temperature of the catalyst is increased.
By using the low-temperature waste gas catalytic treatment device, the low-temperature waste gas firstly passes through the heat exchanger 3 to exchange heat with the cooling liquid in the first heat exchange tube 41, the temperature of the low-temperature waste gas is raised to a temperature interval with the highest catalyst activity, and then the low-temperature waste gas is input into the catalytic box 2 to be catalytically combusted. The cooling liquid after heat exchange in the first heat exchange tube 41 flows into the radiator 44 to dissipate heat, and is cooled to the low-temperature cooling liquid. A part 1 of the low-temperature cooling liquid flows into the second heat exchange pipe 42 to absorb heat generated by catalytic combustion of the exhaust gas in the catalytic box 2, so that the temperature of the catalyst is prevented from rising and the catalytic activity is prevented from being reduced. The high-temperature coolant after absorbing heat in the second heat exchange tube 42 flows into the three-way valve 43, and is mixed with another part of low-temperature coolant generated in the radiator 44, so that the temperature of the high-temperature coolant is reduced to an appropriate temperature, and then the high-temperature coolant flows into the first heat exchange tube 41 to heat the low-temperature exhaust gas, so that the temperature of the low-temperature exhaust gas is increased to a temperature interval with the highest catalyst activity. The three-way valve is used for adjusting the mixing proportion of the high-temperature cooling liquid and the low-temperature cooling liquid, so that the temperature of the mixed cooling liquid is changed, and the low-temperature waste gas can be heated to a proper temperature range.
Implement the embodiment of the utility model provides a, following beneficial effect has: the utility model discloses a low temperature waste gas catalytic treatment device passes through heat exchanger heating low temperature waste gas, the temperature that makes low temperature waste gas risees to the highest temperature interval of catalyst activity, then the coolant liquid passes through the radiator and cools down into low temperature coolant liquid, some low temperature coolant liquid absorbs the heat that waste gas catalytic combustion produced in the second heat exchange tube and becomes high temperature coolant liquid, avoid the catalyst to heat up and reduce catalytic activity, reduce suitable temperature after high temperature coolant liquid mixes with another part low temperature coolant liquid, be used for heating low temperature waste gas in carrying first heat exchanger, the three-way valve is used for adjusting the mixing proportion of high temperature coolant liquid and low temperature coolant liquid, make it can heat low temperature waste gas to suitable temperature, the heat that utilizes catalytic combustion to produce preheats waste gas, the energy consumption when effectively having reduced equipment use.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. Low temperature exhaust gas catalytic treatment device, its characterized in that, it includes:
an exhaust pipe comprising a smoke inlet end and a smoke outlet end;
a catalytic cartridge disposed in the exhaust pipe on a side close to a smoke outlet end;
the heat exchanger is arranged on one side, close to the smoke inlet end, in the exhaust pipe;
the circulating pipeline comprises a first heat exchange pipe, a second heat exchange pipe, a three-way valve and a radiator, the first heat exchange pipe is arranged in a manner of crossing the heat exchanger, the water inlet end of the first heat exchange pipe is communicated with a first interface of the three-way valve, the water outlet end of the first heat exchange pipe is communicated with the water inlet end of the radiator, the second heat exchange pipe is arranged in a manner of crossing the catalysis box, the water inlet end of the second heat exchange pipe is communicated with the water outlet end of the radiator, the water outlet end of the second heat exchange pipe is communicated with a second interface of the three-way valve, and a third;
a water pump disposed on the circulation pipe.
2. The catalytic treatment device for low-temperature exhaust gas according to claim 1, wherein the water pump is arranged between the first heat exchange pipe and the radiator.
3. The catalytic treatment device for low-temperature exhaust gas according to claim 1, wherein the catalytic box is provided with air holes.
4. The catalytic treatment apparatus for low-temperature exhaust gas according to claim 1, further comprising a temperature measuring instrument, a measuring end of which is disposed inside the catalyst case, and a display end of which is disposed outside the catalyst case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920765007.0U CN210088887U (en) | 2019-05-24 | 2019-05-24 | Low-temperature exhaust gas catalytic treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920765007.0U CN210088887U (en) | 2019-05-24 | 2019-05-24 | Low-temperature exhaust gas catalytic treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210088887U true CN210088887U (en) | 2020-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920765007.0U Active CN210088887U (en) | 2019-05-24 | 2019-05-24 | Low-temperature exhaust gas catalytic treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210088887U (en) |
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2019
- 2019-05-24 CN CN201920765007.0U patent/CN210088887U/en active Active
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