CN210373473U - Naphthalene method phthalic anhydride tail gas processing apparatus - Google Patents
Naphthalene method phthalic anhydride tail gas processing apparatus Download PDFInfo
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- CN210373473U CN210373473U CN201920770199.4U CN201920770199U CN210373473U CN 210373473 U CN210373473 U CN 210373473U CN 201920770199 U CN201920770199 U CN 201920770199U CN 210373473 U CN210373473 U CN 210373473U
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Abstract
The utility model relates to a naphthalene method phthalic anhydride tail gas processing apparatus. This naphthalene method phthalic anhydride tail gas processing apparatus advances the pipe including heat accumulation oxidizing chamber and the tail gas that is connected to the import of heat accumulation oxidizing chamber, and tail gas advances pipe department and is provided with the heating device that heats the tail gas that advances the pipe and get into the heat accumulation oxidizing chamber through the tail gas, and heating device is arranged in heating the vaporization with the solid-state organic matter in the naphthalene method phthalic anhydride tail gas. According to the utility model discloses a naphthalene method phthalic anhydride tail gas processing apparatus can effectively avoid the solid-state granule of naphthalene method phthalic anhydride tail gas organic matter to block up on heat accumulation oxidation chamber inlet pipeline and bottom pottery, makes oxidation reaction more thoroughly completely.
Description
Technical Field
The utility model relates to an industrial waste gas purification's technical field, in particular to naphthalene method phthalic anhydride tail gas processing apparatus.
Background
At present, the tail gas of phthalic anhydride by naphthalene method from a switching condenser is conveyed to a heat storage oxidation chamber for oxidative decomposition through a heat tracing pipeline with a split pipe at about 65 ℃. The naphthalene method phthalic anhydride tail gas contains organic matters with higher melting points, most of the organic matters of the tail gas exist in a solid particle state at the temperature, when the solid particles pass through the low-temperature section ceramic at the lower part of the thermal storage oxidation chamber, part of the solid particle organic matters are retained on the low-temperature section ceramic, so that the system resistance is high, the energy consumption of a phthalic anhydride device is increased, the phthalic anhydride device needs to be shut down and cleaned after accumulating for a certain time, and the continuous stable operation of a production device causes hidden troubles. When solid particle organic matters passing through the low-temperature section ceramic enter the oxidation chamber for oxidation, the contact area of the solid particle organic matters and oxygen is far smaller than that of gaseous matters, so that the oxidation efficiency is low, and oxidized products cannot be completely converted into CO2And H2O, causing environmental pollution.
The existing thermal storage oxidation inlet pipeline runs for a long time, solid particles of retained organic matters in the phthalic anhydride tail gas by the naphthalene method are blocked on the inlet pipeline and bottom ceramic of the thermal storage oxidation chamber, and the system resistance is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a naphthalene method phthalic anhydride tail gas processing apparatus can effectively avoid the solid-state granule of naphthalene method phthalic anhydride tail gas organic matter to block up on heat accumulation oxidizing chamber inlet pipeline and bottom pottery, makes the oxidation reaction more thoroughly completely.
In order to realize the above-mentioned purpose, according to the utility model discloses an aspect provides a naphthalene method phthalic anhydride tail gas processing apparatus, enter the pipe including heat accumulation oxidizing chamber and the tail gas that is connected to the import of heat accumulation oxidizing chamber, tail gas advances pipe department and is provided with the heating device that heats to advancing the tail gas that the pipe got into heat accumulation oxidizing chamber through tail gas, and heating device is arranged in heating the solid-state organic matter vaporization with naphthalene method phthalic anhydride tail gas.
Preferably, the heating device is connected in series with the tail gas inlet pipe.
Preferably, the heating device is a heating vaporizer, the heating vaporizer comprises a heat exchange tube, a steam inlet tube and a condensate outlet tube, the steam inlet tube is connected to the inlet of the heat exchange tube, and the condensate outlet tube is connected to the outlet of the heat exchange tube.
Preferably, the steam inlet pipe is connected to the phthalic anhydride steam outlet.
Preferably, the tube bundle of heat exchange tubes is a light pipe.
Preferably, a temperature detection device is arranged on the tail gas inlet pipe at the outlet position of the heating device.
Preferably, a temperature detection device is arranged on the tail gas inlet pipe at the inlet position of the heating device.
Preferably, the temperature detection means is a thermocouple.
Preferably, the regenerative oxidation chamber is also connected with a reverse suction fan.
Preferably, a burner is also connected to the regenerative oxidation chamber.
The utility model relates to a clean thermal storage oxidation method of naphthalene method phthalic anhydride tail gas has the advantages that:
1. the solid substances in the naphthalene method phthalic anhydride tail gas are vaporized and then enter the thermal storage oxidation chamber, so that the oxidation reaction is more complete and thorough.
2. The temperature of the regenerative oxidation chamber is more uniform, and the oxidation process is safer.
3. The service life of the heat accumulator of the heat accumulation oxidation furnace is prolonged.
4. Effectively solves the problem of blocking of organic matters in the regenerative oxidation furnace and reduces the resistance drop of the system.
5. And the light tube type heat exchanger is adopted, so that the long-period operation is not blocked, and the maintenance cost is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a naphthalene method phthalic anhydride tail gas treatment device according to an embodiment of the present invention.
Description of the reference numerals
1. A heating device; 2. a heat exchange pipe; 3. a steam inlet pipe; 4. a condensate outlet pipe; 5. a first temperature detection device; 6. a second temperature detection device; 7. introducing tail gas into a pipe; 8. a thermal storage oxidation chamber; 9. a burner; 10. a reverse pumping fan; 11. and (4) an outlet pipe of the regenerative oxidation chamber.
Detailed Description
The embodiments of the invention are described in detail below, but the invention can be implemented in many different ways, which are defined and covered by the claims.
Referring to fig. 1, according to the embodiment of the present invention, the naphthalene phthalic anhydride tail gas treatment device includes a thermal storage oxidation chamber 8 and a tail gas inlet pipe 7 connected to the inlet of the thermal storage oxidation chamber 8, the tail gas inlet pipe 7 is provided with a heating device 1 for heating the tail gas entering the thermal storage oxidation chamber 8 through the tail gas inlet pipe 7, and the heating device 1 is used for heating and vaporizing the solid organic compounds in the naphthalene phthalic anhydride tail gas.
Naphthalene method phthalic anhydride tail gas processing apparatus in this application, it sets up one set of heating device 1 to advance to manage 7 at the tail gas that gets into heat accumulation oxidizing chamber 8, solid-state organic matter in the naphthalene method phthalic anhydride tail gas heats the vaporization, become gaseous state to the organic matter that gets into in the 8 tail gases in heat accumulation oxidizing chamber, make its low temperature section unblock, it is more abundant with the oxygen contact to get into heat accumulation oxidizing chamber 8, it is more thorough to make its organic matter oxidation, the temperature in the heat accumulation oxidizing chamber 8 is more even, heat accumulation oxidation process is safer.
Heating device 1 is established ties and is advanced on pipe 7 at tail gas for the naphthalene method phthalic anhydride tail gas that tail gas advances in pipe 7 can directly flow through heating device 1 and heat, can improve heating efficiency. The heating device 1 can also be arranged outside the tail gas inlet pipe 7, and heats the tail gas of the naphthalene method phthalic anhydride in the tail gas inlet pipe 7 in a mode of heating the tail gas inlet pipe 7.
In this embodiment, the heating device 1 is a heating vaporizer, the heating vaporizer comprises a heat exchange tube 2, a steam inlet tube 3 and a condensate outlet tube 4, the steam inlet tube 3 is connected to the inlet of the heat exchange tube 2, and the condensate outlet tube 4 is connected to the outlet of the heat exchange tube 2. In this embodiment, external high-temperature steam can be introduced from the steam inlet pipe 3, and then the naphthalene phthalic anhydride tail gas flowing through the heating device 1 is subjected to heat exchange at the heat exchange pipe 2, so as to heat and vaporize the naphthalene phthalic anhydride tail gas, and the temperature of the high-temperature steam after heat exchange is reduced, so that the high-temperature steam is condensed into condensate and flows out from the condensate outlet pipe 4.
Preferably, the steam inlet pipe 3 is connected to a phthalic anhydride steam outlet, so that high-temperature phthalic anhydride steam and naphthalene-process phthalic anhydride tail gas can be directly utilized for heat exchange, the energy utilization efficiency is effectively improved, and the energy waste is avoided. The naphthalene phthalic anhydride tail gas from the switching condenser is preheated to about 90 ℃ in a tail gas pipe of the cut pipe, and enters a heating vaporizer from a tail gas inlet pipe 7 for heating and vaporization. The phthalic anhydride steam introduced from the switching condenser is saturated steam with the pressure of 2.2MPa and the temperature of 212 ℃, and can exchange heat with the naphthalene method phthalic anhydride tail gas more fully, so that solid organic matters in the naphthalene method phthalic anhydride tail gas are fully vaporized, and the tail gas inlet pipe 7 is prevented from being blocked by the solid organic matters.
Preferably, the tube bundle of the heat exchange tube 2 is a light pipe, so that the crystallization of solid organic matters on the heat exchange tube 2 of the heating vaporizer can be effectively prevented, the possibility that the solid organic matters are accumulated on the heat exchange tube 2 is reduced, the problem of blockage under the long-term operation condition is effectively avoided, and the maintenance cost is reduced.
A temperature detection device, specifically, a second temperature detection device 6 is disposed on the exhaust gas inlet pipe 7 at the outlet of the heating device 1.
A temperature detection device, specifically, a first temperature detection device 5 is arranged on the exhaust gas inlet pipe 7 at the inlet of the heating device 1.
In the present embodiment, the first temperature detection device 5 and the second temperature detection device 6 are both thermocouples.
Set up the thermocouple respectively through naphthalene method phthalic anhydride tail gas import and export at heating device 1, can carry out the accuracy to the temperature that gets into naphthalene method phthalic anhydride tail gas in heating device 1 and the temperature after the heating and detect, thereby can adjust heating device 1's heating capacity according to the temperature that detects, can enough avoid the heating capacity too big energy waste that causes, can avoid the heating capacity undersize again to lead to the problem of the unable abundant vaporization of solid-state organic matter, improve heating device 1's energy utilization efficiency, make the solid-state organic matter in the naphthalene method phthalic anhydride tail gas can vaporize more fully.
The heat accumulation oxidation chamber 8 is also connected with a reverse suction fan 10.
The regenerative oxidation chamber 8 is also connected with a burner 9.
Organic matters in the naphthalene method phthalic anhydride tail gas are heated to more than 135 ℃ by a heating vaporizer and enter a heat storage oxidation chamber 8 in a gas state for full oxidative decomposition, the organic matters in the naphthalene method phthalic anhydride tail gas are thoroughly oxidized and decomposed under the auxiliary action of a reverse air extractor 10 and a combustor 9, and the generated clean tail gas is discharged through a heat storage oxidation chamber outlet 11.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The naphthalene method phthalic anhydride tail gas treatment device is characterized by comprising a heat storage oxidation chamber and a tail gas inlet pipe connected to an inlet of the heat storage oxidation chamber, wherein a heating device for heating tail gas entering the heat storage oxidation chamber through the tail gas inlet pipe is arranged at the tail gas inlet pipe, and the heating device is used for heating and vaporizing solid organic matters in the naphthalene method phthalic anhydride tail gas.
2. The naphthalene phthalic anhydride tail gas treatment device according to claim 1, wherein the heating device is connected in series to the tail gas inlet pipe.
3. The naphthalene phthalic anhydride tail gas treatment device of claim 2, wherein the heating device is a heating vaporizer, the heating vaporizer comprises a heat exchange tube, a steam inlet tube and a condensate outlet tube, the steam inlet tube is connected to an inlet of the heat exchange tube, and the condensate outlet tube is connected to an outlet of the heat exchange tube.
4. The naphthalene phthalic anhydride tail gas treatment device according to claim 3, wherein the steam inlet pipe is connected to a phthalic anhydride steam outlet.
5. The naphthalene phthalic anhydride tail gas treatment device according to claim 3, wherein the tube bundle of the heat exchange tubes is a light pipe.
6. The naphthalene phthalic anhydride tail gas treatment device according to claim 1, wherein a temperature detection device is arranged on the tail gas inlet pipe at the outlet of the heating device.
7. The naphthalene phthalic anhydride tail gas treatment device according to claim 1, wherein a temperature detection device is arranged on the tail gas inlet pipe at the inlet of the heating device.
8. The naphthalene phthalic anhydride tail gas treatment device according to claim 6 or 7, wherein the temperature detection device is a thermocouple.
9. The naphthalene phthalic anhydride tail gas treatment device according to claim 1, wherein a reverse ventilator is further connected to the thermal storage oxidation chamber.
10. The naphthalene phthalic anhydride tail gas treatment device according to claim 1, wherein a burner is further connected to the regenerative oxidizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920770199.4U CN210373473U (en) | 2019-05-27 | 2019-05-27 | Naphthalene method phthalic anhydride tail gas processing apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920770199.4U CN210373473U (en) | 2019-05-27 | 2019-05-27 | Naphthalene method phthalic anhydride tail gas processing apparatus |
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| CN210373473U true CN210373473U (en) | 2020-04-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432424A (en) * | 2021-06-21 | 2021-09-24 | 中国原子能科学研究院 | Tail gas discharge device of melting device and melting system |
| CN114198758A (en) * | 2021-12-06 | 2022-03-18 | 江苏瑞鼎环境工程有限公司 | Normal butane method maleic anhydride tail gas is with incineration disposal system |
-
2019
- 2019-05-27 CN CN201920770199.4U patent/CN210373473U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432424A (en) * | 2021-06-21 | 2021-09-24 | 中国原子能科学研究院 | Tail gas discharge device of melting device and melting system |
| CN114198758A (en) * | 2021-12-06 | 2022-03-18 | 江苏瑞鼎环境工程有限公司 | Normal butane method maleic anhydride tail gas is with incineration disposal system |
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