CN209922896U - System for heating sulfuric acid converter by using preheater - Google Patents
System for heating sulfuric acid converter by using preheater Download PDFInfo
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- CN209922896U CN209922896U CN201920211960.0U CN201920211960U CN209922896U CN 209922896 U CN209922896 U CN 209922896U CN 201920211960 U CN201920211960 U CN 201920211960U CN 209922896 U CN209922896 U CN 209922896U
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- China
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- diesel oil
- preheater
- sulfuric acid
- acid converter
- air
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The utility model provides a system for it heaies up for sulphuric acid converter with preheater, include diesel oil groove, diesel oil pump, intensification fan, fire burning furnace, main blower, preheater and sulphuric acid converter, the diesel oil export of diesel oil groove with the diesel oil import of diesel oil pump links to each other, the diesel oil export of diesel oil pump links to each other with the diesel oil import of burning furnace, the air outlet of intensification fan links to each other with the air intlet who fires burning furnace, fire burning furnace's hot fume gas export with the hot fume inlet of preheater is linked together, be provided with the heat exchanger in the preheater, the air outlet of main blower is linked together with the air intlet of preheater, the hot air export of preheater is linked together with the hot air import of sulphuric acid converter. The utility model is simple in operation, operation safe and reliable ensure that driving initial stage sulfur dioxide can all be changed into sulfur trioxide, do not have injury, investment is few relatively and the security performance is high to the catalyst.
Description
[ technical field ] A method for producing a semiconductor device
The utility model particularly relates to a system for heat up for sulphuric acid converter with preheater.
[ background of the invention ]
The traditional sulfuric acid converter catalyst generally adopts diesel oil to heat a sulfur incinerator, and then uses hot flue gas containing the diesel oil in the sulfur incinerator to heat the converter catalyst. As a large amount of water vapor is generated after the diesel oil is combusted, once the water vapor enters the conversion system, the water vapor is condensed in a bed layer of the catalyst, the activity of the vanadium catalyst is seriously influenced, the conversion rate of converting sulfur dioxide into sulfur trioxide is directly reduced, and the emission of sulfur dioxide in tail gas exceeds the national standard.
[ Utility model ] content
The utility model aims to solve the technical problem that a system for giving sulfuric acid converter intensification with the pre-heater is provided, this intensification system easy operation, operation safe and reliable ensure that driving initial stage sulfur dioxide can all be converted into sulfur trioxide, do not have injury, investment is few relatively and the security performance is high to the catalyst.
The utility model discloses a solve above-mentioned technical problem through following technical scheme:
a system for heating a sulfuric acid converter by using a preheater comprises a diesel oil groove, a diesel oil pump, a heating fan, a combustion furnace, a main fan, a preheating furnace and the sulfuric acid converter, wherein a diesel oil outlet of the diesel oil groove is connected with a diesel oil inlet of the diesel oil pump, a diesel oil outlet of the diesel oil pump is connected with a diesel oil inlet of the combustion furnace, an air outlet of the heating fan is connected with an air inlet of the combustion furnace, a hot flue gas outlet of the combustion furnace is communicated with a hot flue gas inlet of the preheating furnace, a heat exchanger is arranged in the preheating furnace, an air outlet of the main fan is communicated with an air inlet of the preheating furnace, and a hot air outlet of the preheating furnace is communicated with a hot air inlet of the sulfuric acid converter; the diesel oil pump is characterized in that a first valve is arranged at a diesel oil outlet of the diesel oil pump, a second valve is arranged at an air outlet of the warming fan, and a third valve is arranged at an air outlet of the main fan.
The utility model has the advantages as follows:
the hot flue gas generated by burning diesel oil in the combustion furnace is subjected to heat exchange with air which is about to enter the sulfuric acid converter in the preheating furnace to obtain hot air, and the hot air is used for directly heating the sulfuric acid converter, so that the diesel oil flue gas does not directly enter the sulfuric acid converter in the heating start process, and a catalyst in the sulfuric acid converter is protected from being polluted by the diesel oil in the heating process; the temperature rising system is simple to operate, safe and reliable in operation, capable of ensuring that sulfur dioxide can be completely converted into sulfur trioxide at the initial starting stage, free of damage to a catalyst, relatively low in investment and high in safety performance. Can solve various problems caused by the method that the diesel oil is used for heating the sulfur burning furnace and then the hot smoke containing the diesel oil in the sulfur burning furnace is used for heating the catalyst of the sulfuric acid converter.
[ description of the drawings ]
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a system for warming a sulfuric acid converter using a preheater according to the present invention.
[ detailed description ] embodiments
Referring to fig. 1, the utility model relates to a system for heating up a sulfuric acid converter by a preheater, the system comprises a diesel oil tank 1, a diesel oil pump 2, a heating fan 3, a combustion furnace 4, a main fan 5, a preheating furnace 6 and a sulfuric acid converter 7, a diesel oil outlet of the diesel oil tank 1 is connected with a diesel oil inlet of the diesel oil pump 2, a diesel oil outlet of the diesel oil pump 2 is connected with a diesel oil inlet of the combustion furnace 4, an air outlet of the heating fan 3 is connected with an air inlet of the combustion furnace 4, a hot flue gas outlet of the combustion furnace 4 is communicated with a hot flue gas inlet of the preheating furnace 6, a heat exchanger 61 is arranged in the preheating furnace 6, an air outlet of the main fan 5 is communicated with an air inlet of the preheating furnace 6, and a hot air outlet of the preheating furnace 6 is communicated with a hot air inlet of the sulfuric acid converter 7; the diesel oil pump 2 is provided with a first valve 21 at a diesel oil outlet, the warming fan 3 is provided with a second valve 31 at an air outlet, and the main fan 5 is provided with a third valve 51 at an air outlet.
The utility model discloses a driving method as follows:
starting the main fan 5, adjusting a third valve 51 at an air outlet of the main fan 5 to control the air intake of the sulfuric acid converter 7; starting the temperature-rising fan 3, starting the diesel pump 2 to pump diesel into the combustion furnace 4 and igniting the diesel in the combustion furnace 4, controlling the amount of the diesel entering the combustion furnace 4 by adjusting a first valve 21 at the diesel outlet of the diesel pump 2, adjusting a second valve 31 at the air outlet of the temperature-rising fan 3 to control the air intake entering the combustion furnace 4, and controlling the temperature-rising speed of the combustion furnace 4 by using the amount of the diesel and the air intake; after entering the preheating furnace 6, the high-temperature flue gas of the combustion furnace 4 exchanges heat with the air sent by the main fan 5 through the heat exchanger, and heats the air entering the sulfuric acid converter.
The temperature rise rate of the first-stage catalyst of the sulfuric acid converter is as follows:
1. normal temperature → 50 deg.C 25 deg.C/h
2、50℃→170℃ 15℃/h
3. 170 ℃ → 180 ℃ 10 ℃/h, and keeping the temperature at 180 ℃ for 6h
4、180℃→240℃ 15℃/h
5. 240 ℃→ 260 ℃ 20 ℃/h, and keeping the temperature at 260 ℃ for 2h
6、260℃→440℃ 15℃/h
7. 440 ℃ → 450 ℃ 10 ℃/h, and the temperature is kept constant at 450 ℃ for 12h
And after the constant temperature of 450 ℃, ending the temperature rise of the sulfuric acid converter, and stopping the temperature rise of the sulfuric acid converter.
The utility model utilizes the hot flue gas generated by burning diesel in the combustion furnace 4 to exchange heat with the air which is about to enter the sulfuric acid converter 7 in the preheating furnace 6 to obtain hot air, and then the hot air is utilized to directly heat the sulfuric acid converter 7, so that the diesel flue gas does not directly enter the sulfuric acid converter 7 in the heating start process, and the catalyst of the sulfuric acid converter 7 is protected from being polluted by diesel in the heating process; the temperature rising system is simple to operate, safe and reliable in operation, capable of ensuring that sulfur dioxide can be completely converted into sulfur trioxide at the initial starting stage, free of damage to a catalyst, relatively low in investment and high in safety performance. Can solve various problems caused by the method that the diesel oil is used for heating the sulfur burning furnace and then the hot smoke containing the diesel oil in the sulfur burning furnace is used for heating the catalyst of the sulfuric acid converter.
It is to be understood that the specific embodiments described are merely illustrative of and not restrictive on the broad invention, and that modifications and variations such as would be obvious to those skilled in the art are intended to be included within the scope of the invention defined by the appended claims.
Claims (1)
1. A system for heating a sulfuric acid converter by using a preheater is characterized in that: the system comprises a diesel oil groove, a diesel oil pump, a warming fan, a combustion furnace, a main fan, a preheating furnace and a sulfuric acid converter, wherein a diesel oil outlet of the diesel oil groove is connected with a diesel oil inlet of the diesel oil pump, a diesel oil outlet of the diesel oil pump is connected with a diesel oil inlet of the combustion furnace, an air outlet of the warming fan is connected with an air inlet of the combustion furnace, a hot flue gas outlet of the combustion furnace is communicated with a hot flue gas inlet of the preheating furnace, a heat exchanger is arranged in the preheating furnace, an air outlet of the main fan is communicated with an air inlet of the preheating furnace, and a hot air outlet of the preheating furnace is communicated with a hot air inlet of the sulfuric acid converter; the diesel oil pump is characterized in that a first valve is arranged at a diesel oil outlet of the diesel oil pump, a second valve is arranged at an air outlet of the warming fan, and a third valve is arranged at an air outlet of the main fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920211960.0U CN209922896U (en) | 2019-02-18 | 2019-02-18 | System for heating sulfuric acid converter by using preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920211960.0U CN209922896U (en) | 2019-02-18 | 2019-02-18 | System for heating sulfuric acid converter by using preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209922896U true CN209922896U (en) | 2020-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920211960.0U Active CN209922896U (en) | 2019-02-18 | 2019-02-18 | System for heating sulfuric acid converter by using preheater |
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| Country | Link |
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| CN (1) | CN209922896U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112340705A (en) * | 2020-10-28 | 2021-02-09 | 中石化南京化工研究院有限公司 | Novel conversion acid making process flow without flue gas emission in temperature rising stage |
| CN114484870A (en) * | 2022-04-18 | 2022-05-13 | 扬州金桃化工设备有限公司 | Preheating device and method for uniformly heating sulfuric acid converter |
-
2019
- 2019-02-18 CN CN201920211960.0U patent/CN209922896U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112340705A (en) * | 2020-10-28 | 2021-02-09 | 中石化南京化工研究院有限公司 | Novel conversion acid making process flow without flue gas emission in temperature rising stage |
| CN114484870A (en) * | 2022-04-18 | 2022-05-13 | 扬州金桃化工设备有限公司 | Preheating device and method for uniformly heating sulfuric acid converter |
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