CN215276527U - High-efficient environment-friendly sulfurous acid preparation system - Google Patents
High-efficient environment-friendly sulfurous acid preparation system Download PDFInfo
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- CN215276527U CN215276527U CN202120841290.8U CN202120841290U CN215276527U CN 215276527 U CN215276527 U CN 215276527U CN 202120841290 U CN202120841290 U CN 202120841290U CN 215276527 U CN215276527 U CN 215276527U
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Abstract
The utility model discloses a high-efficiency environment-friendly sulfurous acid preparation system, which relates to the technical field of chemical production and comprises a sulfur burning mechanism; the sulfur dioxide absorption mechanism comprises a first absorption tower and a second absorption tower, wherein the air inlet end of the first absorption tower is communicated with the air outlet end of the sulfur burning mechanism, the air outlet end of the first absorption tower is communicated with the air inlet end of the second absorption tower, and the first air outlet end of the second absorption tower is communicated with the first absorption tower; and the second gas outlet end of the second absorption tower is communicated with the tail gas discharge mechanism. The utility model discloses in the gaseous first absorption tower and the second absorption tower that gets into of well sulfur dioxide got into in proper order, realize sulfur dioxide's a lot of absorption, and seted up two ends of giving vent to anger on the second absorption tower, can carry gas once more to first absorption tower in, absorb the sulfur dioxide in the gas once more, guarantee the sulfur dioxide absorption rate, reduce sulfur dioxide's in the tail gas content simultaneously, guarantee the cleanliness factor of tail gas.
Description
Technical Field
The utility model relates to a chemical production technical field especially relates to a high-efficient environment-friendly sulfurous acid preparation system.
Background
Sulfurous acid is an aqueous solution of sulfur dioxide, is commonly used as an analytical reagent, a reducing agent and a preservative, and is also used in the fields of textile, paper making, metallurgical industry, organic synthesis and the like.
At present, the sulfurous acid is generally prepared by adopting a sulfur combustion mode, namely, sulfur is combusted to generate gas containing sulfur dioxide, and then the gas is absorbed by process water in an absorption tower to generate a sulfurous acid solution. However, the existing preparation equipment has low acid production efficiency, and the tail gas generated in the process of producing sulfurous acid often contains a large amount of sulfur dioxide, so that the acid production cost is increased, and the atmospheric environment is seriously influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the defect of the prior art is overcome, and a high-efficiency environment-friendly sulfurous acid preparation system is provided.
In order to solve the technical problem, the technical scheme of the utility model as follows:
an efficient environment-friendly sulfurous acid preparation system comprises a sulfur burning mechanism; the sulfur dioxide absorption mechanism comprises a first absorption tower and a second absorption tower, wherein the air inlet end of the first absorption tower is communicated with the air outlet end of the sulfur burning mechanism, the air outlet end of the first absorption tower is communicated with the air inlet end of the second absorption tower, and the first air outlet end of the second absorption tower is communicated with the reprocessing air inlet end of the first absorption tower through a first air outlet pipeline; and the second gas outlet end of the second absorption tower is communicated with the gas inlet end of the tail gas discharge mechanism through a second gas outlet pipeline.
As a preferred scheme of high-efficient environment-friendly sulfurous acid preparation system, wherein: the sulfur burning device is characterized by further comprising a gas cooling mechanism, wherein the gas inlet end of the gas cooling mechanism is communicated with the gas outlet end of the sulfur burning mechanism, and the gas outlet end of the gas cooling mechanism is communicated with the gas inlet end of the first absorption tower.
As a preferred scheme of high-efficient environment-friendly sulfurous acid preparation system, wherein: the bottom of the first absorption tower and the bottom of the second absorption tower both contain process water, and the air inlet end and the retreatment air inlet end of the first absorption tower and the air inlet end of the second absorption tower both extend to the lower part of the liquid level of the process water.
As a preferred scheme of high-efficient environment-friendly sulfurous acid preparation system, wherein: and the first absorption tower and the second absorption tower are internally provided with spraying mechanisms, each spraying mechanism comprises a process water nozzle, and the process water nozzles are communicated with an external process water storage tank through spraying pipes.
As a preferred scheme of high-efficient environment-friendly sulfurous acid preparation system, wherein: and a first exhaust end of the tail gas emission mechanism is communicated with a retreating air inlet end of the first absorption tower through a first exhaust pipeline, and a second exhaust end of the tail gas emission mechanism is communicated with the outside atmosphere through a second exhaust pipeline.
As a preferred scheme of high-efficient environment-friendly sulfurous acid preparation system, wherein: and a detection device for detecting the concentration of sulfur dioxide in the gas is arranged in the tail gas discharge mechanism.
The utility model has the advantages that:
(1) the utility model discloses the sulfur dioxide-containing gas that fires the production of sulphur mechanism gets into in first absorption tower and the second absorption tower in proper order, realize sulfur dioxide's absorption many times, and simultaneously, two ends of giving vent to anger have been seted up in the first absorption tower, and two ends of giving vent to anger communicate with first absorption tower and tail gas absorption mechanism respectively, if contain sulfur dioxide gas still contain more sulfur dioxide in the second absorption tower absorption back, then can carry gas to first absorption tower once more in, absorb sulfur dioxide in the gas once more, thereby guarantee sulfur dioxide absorption rate in the gas, and then improve system acid efficiency, sulfur dioxide's content in the while greatly reduced tail gas, guarantee the cleanliness factor of tail gas.
(2) The utility model discloses in the inlet end of first absorption tower and the inlet end of reprocessing inlet end and second absorption tower all extend to the below that corresponds interior process water liquid level of tower body, make gaseous and process water in close contact with, improve sulfur dioxide's absorptivity, simultaneously, still be provided with in first absorption tower and second absorption tower and spray the mechanism, gaseous follow process water escape after once more with spray the mechanism spun process water contact, further improve sulfur dioxide's absorptivity.
(3) The utility model discloses well technology water nozzle in first absorption tower and the second absorption tower passes through shower and outside technology water storage tank intercommunication, and technology water nozzle can be with technology water spray to the absorption tower in, still can realize the regulation of sulfurous acid solution concentration when mixing with gas.
(4) The utility model discloses be provided with the detection device who is arranged in detecting gaseous sulfur dioxide concentration in tail gas emission mechanism, can discharge the tail gas to the tail gas emission mechanism of second absorption tower and carry out sulfur dioxide concentration detection, if concentration up to standard can discharge, then discharge through second exhaust pipe, if detect concentration not up to standard, then the first exhaust pipe of accessible is carried again and is reabsorbed in sulfur dioxide absorption mechanism, has further guaranteed the cleanliness factor of tail gas.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic structural view of the high-efficiency environment-friendly sulfurous acid preparation system provided by the present invention;
wherein: 100. a sulfur burning mechanism; 200. a sulfur dioxide absorption mechanism; 300. a tail gas discharge mechanism; 400. a gas cooling mechanism; 210. a first absorption tower; 220. a second absorption tower; 221. a first gas outlet pipeline; 222. a second outlet pipeline; 230. a spraying mechanism; 231. a process water nozzle; 310. a first exhaust line; 320. and a second exhaust line.
Detailed Description
In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
The embodiment provides a high-efficient environment-friendly sulfurous acid preparation system, including the mechanism 100 that fires sulphur, gaseous cooling mechanism 400, sulfur dioxide absorption mechanism 200 and the tail gas emission mechanism 300 that connect gradually. Powdered sulfur is combusted by the sulfur combustion mechanism 100 to generate high-temperature sulfur dioxide gas, the gas is cooled by the gas cooling mechanism 400 and then enters the sulfur dioxide absorption mechanism 200, and after the sulfur dioxide gas is absorbed by process water to generate a sulfurous acid solution, tail gas is discharged by the tail gas discharge mechanism 300.
Specifically, the sulfur burning mechanism 100 includes a combustion chamber for burning powdered sulfur, thereby generating high-temperature sulfur dioxide gas. The gas desuperheating mechanism 400 includes a cooler. The inlet end of the cooler is communicated with the outlet end of the sulfur burning mechanism 100. The high-temperature sulfur dioxide gas generated by the sulfur burning mechanism 100 enters the cooler and then is cooled, so that the water solubility of the sulfur dioxide is improved.
The sulfur dioxide absorption mechanism 200 comprises a first absorption tower 210 and a second absorption tower 220, wherein the process water is contained in the bottoms of the first absorption tower 210 and the second absorption tower 220. The inlet end and the retreatment inlet end have been seted up respectively in the both sides of first absorption tower 210, and this inlet end and retreatment inlet end all include the fixed intake pipe that sets up on first absorption tower 210, and the end of giving vent to anger of intake pipe all extends to the below of the interior technology water liquid level of first absorption tower 210. An air outlet end is opened at the upper end of the first absorption tower 210. An air inlet end is formed at one side of the second absorption tower 220 and comprises an air inlet pipe fixedly arranged on the second absorption tower 220, and similarly, an air outlet end of the air inlet pipe extends to a position below the liquid level of the process water in the second absorption tower 220. The upper end of the second absorption tower 220 is provided with a first gas outlet end and a second gas outlet end. The air inlet end of the first absorption tower 210 is communicated with the air outlet end of the cooler, the air outlet end of the first absorption tower 210 is communicated with the air inlet end of the second absorption tower 220, the first air outlet end of the second absorption tower 220 is communicated with the reprocessing air inlet end of the first absorption tower 210 through a first air outlet pipeline 221, and the second air outlet end of the second absorption tower 220 is communicated with the air inlet end of the tail gas discharge mechanism 300 through a second air outlet pipeline 222.
The cooled sulfur dioxide gas discharged from the cooler enters the process water in the first absorption tower 210, is in close contact with the process water, is fully mixed to obtain a sulfurous acid solution, and then the residual gas escapes from the process water, enters the second absorption tower 220, is in close contact with the process water in the second absorption tower 220, so that the residual sulfur dioxide in the gas is fully mixed with the process water, and then the residual gas escapes from the process water. At this time, by selectively opening the first gas outlet line 221 or the second gas outlet line 222 of the second absorption column 220, the flow direction of the surplus gas can be selected. If the first gas outlet pipeline 221 is opened and the second gas outlet pipeline 222 is closed, the residual gas enters the first absorption tower 210 again and contacts and mixes with the process water again; if the first outlet line 221 is closed and the second outlet line 222 is opened, the residual intake air will enter the exhaust emission mechanism 300.
The exhaust emission mechanism 300 includes an exhaust emission tower. The tail gas discharging tower is provided with a first exhaust end and a second exhaust end, the first exhaust end is communicated with the retreating gas inlet end of the first absorption tower 210 through a first exhaust pipeline 310, and the second exhaust end is communicated with the outside atmosphere through a second exhaust pipeline 320. In addition, still be provided with the detection device who is arranged in detecting gaseous sulfur dioxide concentration in the tail gas emission tower, can discharge the tail gas that discharges to tail gas emission mechanism 300 to second absorption tower 220 and carry out sulfur dioxide concentration detection, if concentration up to standard can discharge, then discharge through second exhaust pipe 320, if detection concentration is not up to standard, then the reabsorption is carried out in the first exhaust pipe 310 of accessible carries again to sulfur dioxide absorption mechanism 200, has further guaranteed the cleanliness factor of tail gas.
In addition, a spray mechanism 230 is provided in each of the first absorption tower 210 and the second absorption tower 220, and the spray mechanism 230 includes a process water nozzle 231 fixedly provided in the corresponding absorption tower. The process water nozzles 231 in either absorber are connected to an external process water storage tank through spray pipes. The process water nozzle 231 can spray the process water in the process water storage tank into the absorption tower, the gas is contacted with the process water sprayed by the spraying mechanism 230 again after escaping from the process water, the absorption rate of the sulfur dioxide is further improved, and meanwhile, the concentration of the sulfurous acid solution can be adjusted as the external process water is added into the absorption tower.
In addition, a detection device for detecting the concentration of sulfurous acid may be provided in the first absorption tower 210 and the second absorption tower 220, and the concentration of the obtained sulfurous acid solution may be detected in real time by the detection device.
In addition to the above embodiments, the present invention may have other embodiments; all the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention.
Claims (6)
1. The utility model provides a high-efficient environment-friendly sulfurous acid preparation system which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
a sulfur burning mechanism (100);
the sulfur dioxide absorption mechanism (200) comprises a first absorption tower (210) and a second absorption tower (220), wherein the air inlet end of the first absorption tower (210) is communicated with the air outlet end of the sulfur burning mechanism (100), the air outlet end of the first absorption tower (210) is communicated with the air inlet end of the second absorption tower (220), and the first air outlet end of the second absorption tower (220) is communicated with the reprocessing air inlet end of the first absorption tower (210) through a first air outlet pipeline (221); and the number of the first and second groups,
and the second gas outlet end of the second absorption tower (220) is communicated with the gas inlet end of the tail gas discharge mechanism (300) through a second gas outlet pipeline (222).
2. The efficient and environment-friendly sulfurous acid preparation system according to claim 1, wherein: the sulfur-burning device is characterized by further comprising a gas cooling mechanism (400), wherein the gas inlet end of the gas cooling mechanism (400) is communicated with the gas outlet end of the sulfur-burning mechanism (100), and the gas outlet end of the gas cooling mechanism (400) is communicated with the gas inlet end of the first absorption tower (210).
3. The efficient and environment-friendly sulfurous acid preparation system according to claim 1, wherein: the bottom of the first absorption tower (210) and the bottom of the second absorption tower (220) both contain process water, and the air inlet end and the retreatment air inlet end of the first absorption tower (210) and the air inlet end of the second absorption tower (220) both extend below the liquid level of the process water.
4. The efficient and environment-friendly sulfurous acid preparation system according to claim 3, wherein: the first absorption tower (210) and the second absorption tower (220) are internally provided with a spraying mechanism (230), the spraying mechanism (230) comprises a process water nozzle (231), and the process water nozzle (231) is communicated with an external process water storage tank through a spraying pipe.
5. The efficient and environment-friendly sulfurous acid preparation system according to claim 4, wherein: the first exhaust end of the tail gas discharge mechanism (300) is communicated with the retreating air inlet end of the first absorption tower (210) through a first exhaust pipeline (310), and the second exhaust end of the tail gas discharge mechanism (300) is communicated with the outside atmosphere through a second exhaust pipeline (320).
6. The efficient and environment-friendly sulfurous acid preparation system according to claim 5, wherein: and a detection device for detecting the concentration of sulfur dioxide in the gas is arranged in the tail gas discharge mechanism (300).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120841290.8U CN215276527U (en) | 2021-04-23 | 2021-04-23 | High-efficient environment-friendly sulfurous acid preparation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120841290.8U CN215276527U (en) | 2021-04-23 | 2021-04-23 | High-efficient environment-friendly sulfurous acid preparation system |
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| CN215276527U true CN215276527U (en) | 2021-12-24 |
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| CN202120841290.8U Active CN215276527U (en) | 2021-04-23 | 2021-04-23 | High-efficient environment-friendly sulfurous acid preparation system |
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2021
- 2021-04-23 CN CN202120841290.8U patent/CN215276527U/en active Active
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