CN214936075U - Cracking device for preparing regenerated sulfuric acid from waste acid generated in sulfonation reaction - Google Patents
Cracking device for preparing regenerated sulfuric acid from waste acid generated in sulfonation reaction Download PDFInfo
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- CN214936075U CN214936075U CN202121759226.1U CN202121759226U CN214936075U CN 214936075 U CN214936075 U CN 214936075U CN 202121759226 U CN202121759226 U CN 202121759226U CN 214936075 U CN214936075 U CN 214936075U
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Abstract
The utility model discloses a cracking device for preparing regenerated sulfuric acid from waste acid generated in sulfonation reaction, which comprises a cracking furnace body, a burner, a waste acid spray head, a furnace gas discharge pipe, an air distribution system and a control system; the waste acid spray head comprises an ultrasonic atomization spray gun and an electric flow valve connected with a control system; the air distribution system comprises a combustion fan, a first air distributor, a second air distributor and a third air distributor; the control system comprises a controller, a first oxygen analyzer, a temperature sensor and a second oxygen analyzer. The utility model respectively monitors the oxygen concentration in the furnace and the oxygen concentration in the furnace gas in real time through the oxygen analyzer, and adjusts the air distribution system in real time through the monitoring result, so that the oxygen content in the furnace and the oxygen content in the furnace gas are in reasonable levels, thereby being beneficial to improving the conversion rate of sulfur dioxide; meanwhile, the air distribution system is arranged into a tertiary air distribution structure, so that the oxygen content in the furnace and the oxygen content in the furnace gas can be independently adjusted, the adjustment is more accurate, and the problem that the oxygen content in the furnace is too high or the oxygen content in the furnace gas is too low due to single adjustment is avoided.
Description
Technical Field
The utility model relates to a pyrolysis device for preparing regenerated sulfuric acid by using waste acid generated in sulfonation reaction, belonging to the field of chemical industry.
Background
In the production and preparation process of the sulfonic acid antirust agent, sulfuric acid is commonly used as a sulfonating agent during sulfonation reaction, and certain waste sulfuric acid is generated after the sulfonation reaction is finished and needs to be recycled. Because the concentration of the waste sulfuric acid is generally low, the content of impurities is high, most of the waste sulfuric acid contains organic matters, and the waste sulfuric acid is difficult to directly utilize. The main recycling method is to prepare regenerated sulfuric acid, and the method can produce 98% sulfuric acid and has good economic benefit and environmental benefit.
The oxygen content plays an important role in the cracking reaction of the waste sulfuric acid and the catalytic oxidation reaction process of the sulfur dioxide gas, and the conversion rate of the sulfur dioxide and the quality and yield of the final product sulfuric acid are affected when the oxygen content is too high or too low. In the prior art, oxygen in a waste sulfuric acid cracking furnace is mainly provided by air introduced by a combustion fan, the control on the oxygen supply amount of the cracking furnace is relatively extensive at present, a formula system cannot be regulated and controlled in real time according to the oxygen content in the furnace and the oxygen content in furnace gas, the conversion rate of sulfur dioxide is influenced, and the quality and the yield of regenerated sulfuric acid are influenced.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned not enough, the utility model provides a sulfonation reaction waste acid preparation regeneration sulfuric acid's cracker, the utility model discloses the technical scheme who adopts is:
a cracking device for preparing regenerated sulfuric acid from waste acid generated in sulfonation reaction comprises a cracking furnace body, a burner, a waste acid spray head, a furnace gas discharge pipe, an air distribution system and a control system; the burner and the waste acid spray head are arranged in the front section of the cracking furnace body, and the furnace gas discharge pipe is arranged at the tail end of the cracking furnace body; the waste acid spray head comprises an ultrasonic atomization spray gun and an electric flow valve connected with a control system; the air distribution system comprises a combustion-supporting fan, and a first air distributor, a second air distributor and a third air distributor which are connected with the combustion-supporting fan through pipelines, wherein electric flow valves connected with the control system are arranged on the pipelines of the first air distributor, the second air distributor and the third air distributor which are connected with the combustion-supporting fan; the first air distributor is arranged at the feed end of the burner, the fuel nozzle is arranged in the first air distributor, the second air distributor is arranged in the middle section of the cracking furnace body, and the third air distributor is arranged on the furnace gas exhaust pipe; the control system comprises a controller, a first oxygen analyzer and a temperature sensor which are arranged in the middle-rear section of the cracking furnace body, and a second oxygen analyzer which is arranged in the furnace gas exhaust pipe.
Further, the first air distributor and the third air distributor are vane rotating type cyclone air distributors.
Further, the second air distributor is an air distribution pipe.
Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model respectively monitors the oxygen concentration in the furnace and the oxygen concentration in the furnace gas in real time through the oxygen analyzer, and adjusts the air distribution system in real time through the monitoring result, so that the oxygen content in the furnace and the oxygen content in the furnace gas are in reasonable levels, thereby being beneficial to improving the conversion rate of sulfur dioxide; meanwhile, the air distribution system is arranged into a tertiary air distribution structure, so that the oxygen content in the furnace and the oxygen content in the furnace gas can be independently adjusted, the adjustment is more accurate, and the problem that the oxygen content in the furnace is too high or the oxygen content in the furnace gas is too low due to single adjustment is avoided.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.
Example (b):
referring to fig. 1, a cracking device for preparing regenerated sulfuric acid from waste acid generated in sulfonation reaction comprises a cracking furnace body 1, a burner 2, a waste acid spray head, a furnace gas discharge pipe 3, an air distribution system and a control system; the burner 2 and the waste acid spray head are arranged in the front section of the cracking furnace body 1, and the furnace gas discharge pipe 3 is arranged at the tail end of the cracking furnace body 1; the waste acid spray head comprises an ultrasonic atomization spray gun 5 and an electric flow valve 6 connected with a control system; the air distribution system comprises a combustion-supporting fan 7, and a first air distributor 8, a second air distributor 9 and a third air distributor 10 which are connected with the combustion-supporting fan 7 through pipelines, wherein electric flow valves 6 connected with the control system are respectively arranged on the pipelines of the first air distributor 8, the second air distributor 9 and the third air distributor 10 connected with the combustion-supporting fan 7; the first air distributor 8 is arranged at the feed end of the burner 2, the fuel nozzle 11 is arranged in the first air distributor 8, the second air distributor 9 is arranged in the middle section of the cracking furnace body 1, and the third air distributor 10 is arranged on the furnace gas exhaust pipe 3; the control system comprises a controller 12, a first oxygen analyzer 13 and a temperature sensor 14 which are arranged in the rear section of the cracking furnace body 1, and a second oxygen analyzer 15 which is arranged in the furnace gas exhaust pipe 3.
The first air distributor 8 and the third air distributor 10 are vane rotary type rotational flow air distributors, and the second air distributor 9 is an air distribution pipe.
The utility model discloses a set up first oxygen analysis appearance in the cracking furnace body, through oxygen content in first oxygen analysis appearance real-time analysis stove, according to the amount of wind or the spent acid volume of spouting of the first, two air distributors of oxygen content level adjustment in the stove to make the interior oxygen content of stove be in reasonable level, guarantee that the spent acid can fully split, improve spent acid cracking stage sulfur dioxide's conversion rate. The utility model discloses a set up the second oxygen analysis appearance in the burner gas calandria, through the real-time analysis burner gas oxygen content of second oxygen analysis appearance, according to the first, two, three air distributors's of burner gas oxygen content level adjustment amount of wind to make burner gas oxygen content be in reasonable level, improve catalytic oxidation stage sulfur dioxide's conversion rate.
The utility model discloses detect the oxygen content with the burner gas in the stove and the air distribution separately designs, its aim at is in order to improve sulfur dioxide's final conversion rate, make sulfur dioxide catalytic oxidation go on with maximum reaction rate, burner gas oxygen concentration will be higher than the stove oxygen concentration in the reaction of spent sulfuric acid cracking, if use stove oxygen concentration as single regulation and control foundation, then probably lead to stove gas oxygen concentration not to reach maximum reaction rate requirement, if use burner gas oxygen concentration as single regulation and control foundation, then probably lead to the stove oxygen concentration too high, arouse the sulfur dioxide adverse reaction, still can lead to the air distribution to introduce too much useless gas and get into the stove, so the utility model discloses set up the oxygen content with the burner gas in the stove and detect and the air distribution to relative independent structure.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (3)
1. The utility model provides a pyrolysis device of sulfonation reaction spent acid preparation regeneration sulphuric acid which characterized in that: the waste acid cracking furnace comprises a cracking furnace body, a combustor, a waste acid spray head, a furnace gas discharge pipe, an air distribution system and a control system; the burner and the waste acid spray head are arranged in the front section of the cracking furnace body, and the furnace gas discharge pipe is arranged at the tail end of the cracking furnace body; the waste acid spray head comprises an ultrasonic atomization spray gun and an electric flow valve connected with a control system; the air distribution system comprises a combustion-supporting fan, and a first air distributor, a second air distributor and a third air distributor which are connected with the combustion-supporting fan through pipelines, wherein electric flow valves connected with the control system are arranged on the pipelines of the first air distributor, the second air distributor and the third air distributor which are connected with the combustion-supporting fan; the first air distributor is arranged at the feed end of the burner, the fuel nozzle is arranged in the first air distributor, the second air distributor is arranged in the middle section of the cracking furnace body, and the third air distributor is arranged on the furnace gas exhaust pipe; the control system comprises a controller, a first oxygen analyzer and a temperature sensor which are arranged in the middle-rear section of the cracking furnace body, and a second oxygen analyzer which is arranged in the furnace gas exhaust pipe.
2. The cracking device for preparing regenerated sulfuric acid from waste acid generated in sulfonation reaction according to claim 1, wherein: the first air distributor and the third air distributor are vane rotary type rotational flow air distributors.
3. The cracking device for preparing regenerated sulfuric acid from waste acid generated in sulfonation reaction according to claim 1, wherein: the second air distributor is an air distribution pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121759226.1U CN214936075U (en) | 2021-07-30 | 2021-07-30 | Cracking device for preparing regenerated sulfuric acid from waste acid generated in sulfonation reaction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121759226.1U CN214936075U (en) | 2021-07-30 | 2021-07-30 | Cracking device for preparing regenerated sulfuric acid from waste acid generated in sulfonation reaction |
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| CN214936075U true CN214936075U (en) | 2021-11-30 |
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| CN202121759226.1U Active CN214936075U (en) | 2021-07-30 | 2021-07-30 | Cracking device for preparing regenerated sulfuric acid from waste acid generated in sulfonation reaction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109052335A (en) * | 2018-07-24 | 2018-12-21 | 上海三夫工程技术有限公司 | A kind of method of sulfur gas reduction Waste Sulfuric Acid sulfur dioxide liquid and sulfuric acid |
-
2021
- 2021-07-30 CN CN202121759226.1U patent/CN214936075U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109052335A (en) * | 2018-07-24 | 2018-12-21 | 上海三夫工程技术有限公司 | A kind of method of sulfur gas reduction Waste Sulfuric Acid sulfur dioxide liquid and sulfuric acid |
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