CN204275781U - The Integrated Processing Unit of waste gas and waste residue in sodium methyl mercaptide production process - Google Patents
The Integrated Processing Unit of waste gas and waste residue in sodium methyl mercaptide production process Download PDFInfo
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- CN204275781U CN204275781U CN201420206762.2U CN201420206762U CN204275781U CN 204275781 U CN204275781 U CN 204275781U CN 201420206762 U CN201420206762 U CN 201420206762U CN 204275781 U CN204275781 U CN 204275781U
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Abstract
The utility model discloses the Integrated Processing Unit of waste gas and waste residue in a kind of sodium methyl mercaptide production process, comprise heating by the exhaust gases and light mouth, the fire end that described heating by the exhaust gases lights mouth is arranged in heat-accumulation combustion stove, described heat-accumulation combustion stove one end is connected with the drying drum for drying sludge, drying drum is connected with drying sludge collecting box, discharging opening is provided with bottom described drying sludge collecting box, drying sludge collecting box top is provided with blast pipe, described blast pipe is connected with first order spray condensing unit, the side of first order spray condensing unit is provided with the first spray liquid feedway, the outlet side of described first order spray condensing unit is connected with second level spray condensing unit, the side of described second level spray condensing unit is provided with the second spray liquid feedway, spray condensing unit top, the described second level is provided with exhaust outlet.After this device process waste gas and waste residue, any pollution is not produced to air, and effectively can extract waste residue, and be converted into available resources.
Description
Technical field
The utility model relates to a kind of chemical by-product treating apparatus, particularly relates to the Integrated Processing Unit of waste gas and waste residue in a kind of sodium methyl mercaptide production process.
Background technology
Methyl mercaptan, also known as sulphur hydrogen methane, is a kind of colourless cacodorous gas, and due to transport and use inconvenience, the methyl mercaptan product on market is sold mainly with the form of sodium methyl mercaptide saline solution, common name sodium methyl mercaptide.Sodium methyl mercaptide product is a kind of broad-spectrum fine-chemical intermediate, is mainly used in medicine intermediate, agricultural chemical insecticide and herbicide, and the industry such as easer, and the sodium methyl mercaptide industrial goods on market are generally sold as the form of 20% aqueous solution.
---sulfuration alkaline process, thiocarbamide---dimethyl sulfate method, NaHS---dimethyl sulfate method and methyl alcohol---hydrogen sulfide method that sodium methyl mercaptide product processes can be divided into following several by raw material route: chloromethanes.Wherein first and second, four kinds of methods exist yield low, pollute large, high in cost of production shortcoming, therefore the sodium methyl mercaptide of suitability for industrialized production mainly adopts the third method, react with dimethyl sulfate at the temperature of 60 DEG C by NaHS NaSH, produce methyl mercaptan gas, methyl mercaptan, after hydrogen sulfide is deviate from multistage alkali cleaning, reacts with liquid caustic soda under vacuum and generates the sodium methyl mercaptide aqueous solution.
Describe visible by above-mentioned production, serious environmental issue is there is in the production process of sodium methyl mercaptide, mainly react at NaHS and dimethyl sulfate and generate the methyl mercaptan gas stage, reaction temperature too high and too lowly all can produce a large amount of dimethyl sulfides, generation is approximately about 10% ~ 15%, namely often 1 ton of sodium methyl mercaptide product by-product 100 ~ 150kg dimethyl sulfide is produced, and dimethyl sulfide boiling point is 34 degrees Celsius, be easy to along with vacuum pipeline spills in air under normal temperature, general environment protection treating scheme majority uses the method for cryogenic condensation trapping to reclaim dimethyl sulfide, or by the reaction of strong oxidizer spray, dimethyl sulfide is oxidized to the less pyrovinic acid product of temperature.All there is defect in various degree in these two kinds of methods, equipment investment is there is larger by the method for cryogenic condensation trapping dimethyl sulfide, the minimum condensed in two stages of wanting of condenser just can reach more satisfactory effect, and the dimethyl sulfide liquid of returning also to there is odor threshold too low, the lower pressure vessel that needs of boiling point is preserved, and is not easy the shortcomings such as sale and transport.Also have strong oxidizer selling at exorbitant prices by strong oxidizer spray reaction cacodyl oxide base thioether, spray column gas liquid reaction is too short for time of contact, and the pyrovinic acid that after oxidation, reaction is formed also easily causes new pollution sources.
Side reaction also can produce a small amount of hydrogen sulfide gas, hydrogen sulfide gas is mainly through the method process of alkali cleaning, after alkali cleaning, accessory substance hydrogen sulfide gas is finally present in product with the form of vulcanized sodium, therefore after two kinds of raw material reactions terminate, have a large amount of sodium sulfate byproduct in still raffinate to occur, the metabisulfite solution concentration of by-product is considerably beyond the saturated concentration of solution, along with temperature reduce will the moisture in absorbent solution to be gradated by anhydrous sodium sulfate be 15 aqueous sodium persulfates, and owing to remaining a small amount of methyl mercaptan and hydrogen sulfide gas in solution, in the process of sulfate crystal, can by these parcels of moisture containing foul gas wherein, the sodium sulphate of crystallization is caused to give out a foul smell continuously, not only a large amount of spaces but also contaminated air were taken.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of chemical by-product process Integrated Processing Unit of waste gas and waste residue in sodium methyl mercaptide production process thoroughly.
For solving the problems of the technologies described above, the technical solution of the utility model is: the Integrated Processing Unit of waste gas and waste residue in sodium methyl mercaptide production process, comprise heating by the exhaust gases and light mouth, the fire end that described heating by the exhaust gases lights mouth is arranged in heat-accumulation combustion stove, described heat-accumulation combustion stove one end is connected with the drying drum for drying sludge, described drying drum is connected with drying sludge collecting box, discharging opening is provided with bottom described drying sludge collecting box, described drying sludge collecting box top is provided with blast pipe, described blast pipe is connected with first order spray condensing unit, the side of described first order spray condensing unit is provided with the first spray liquid feedway, the outlet side of described first order spray condensing unit is connected with second level spray condensing unit, the side of described second level spray condensing unit is provided with the second spray liquid feedway, spray condensing unit top, the described second level is provided with exhaust outlet.
Improve as one, described heating by the exhaust gases is lighted mouth and is comprised igniting base, ceramic heat storage body is filled with in described igniting base, the economizer bank extended to outside described igniting base is provided with through described ceramic heat storage body, the described economizer bank end be positioned at outside described igniting base is connected with gas introducing tube, described gas introducing tube is communicated with combustion oxygen pipe, described igniting base is also communicated with waste gas inlet tube and combustion air inlet tube, and described waste gas inlet tube is communicated with described economizer bank through described ceramic heat storage body, the described economizer bank end correspondence being positioned at described igniting base is provided with igniter, described igniting base end is provided with flame horn mouth, and described flame horn mouth is located in described heat-accumulation combustion stove.
Improve as one, be positioned at the described economizer bank end-enclosed of described igniting base, and its end perisporium is distributed with some ventholes.
Improve as one, described heat-accumulation combustion stove comprises body of heater, is provided with the ceramic honeycomb body for accumulation of heat in described body of heater.
Improve as one, described first order spray condensing unit comprises spray column, described spray column top is provided with the first spray liquid feed tube, install in described spray column and be distributed with the shower nozzle being communicated with described first spray liquid feed tube, the inwall of described spray column is provided with anticorrosive coat, and is distributed with the circulating chilled water pipeline for lowering the temperature in described spray column.
Improve as one, described anticorrosive coat is set to polyethylene coating.
Improve as one, described first spray liquid feedway comprises the first spray liquid fluid reservoir, and described first spray liquid fluid reservoir is connected with the first delivery pump by pipeline, and described first delivery pump is connected to described first spray liquid feed tube by pipeline.
Improve as one, described second level spray condensing unit comprises falling-film absorber, and the periphery of described falling-film absorber is provided with the fountain head of cooling.
Improve as one, described fountain head side is provided with temperature-dropping fan.
Improve as one, described second spray liquid feedway comprises the second spray liquid fluid reservoir, and described second spray liquid fluid reservoir is connected with the second delivery pump by pipeline, and described second delivery pump is connected to described falling-film absorber by pipeline.
Owing to have employed technique scheme, the beneficial effects of the utility model are: light mouth by heating by the exhaust gases and the main component dimethyl sulfide of stench in waste gas has been carried out oxy combustion by heat-accumulation combustion stove, the sodium sulphate of crystallization is carried out drying by drying drum by the heat produced after burning, and dried anhydrous sodium sulfate can be used as anhydrous glauber salt and sells; Stench composition in waste gas effectively can be oxidized into sulfur dioxide by the flame in heat-accumulation combustion stove, and high temperature sulfur dioxide is reclaimed by the condensation of two-stage spray again, is conducive to the extraction and application of protection of the environment and waste residue.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the utility model and explain, does not limit scope of the present utility model.Wherein:
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the schematic enlarged-scale view that the utility model embodiment heating by the exhaust gases lights mouth and heat-accumulation combustion stove;
In figure: 1-lights a fire base; 2-ceramic heat storage body; 3-economizer bank; 4-gas introducing tube; 5-combustion oxygen pipe; 6-waste gas inlet tube; 7-combustion air inlet tube; 8-igniter; 9-flame horn mouth; 10-venthole; 11-drying drum; 12-drying sludge collecting box; 13-discharging opening; 14-blast pipe; 15-body of heater; 16-ceramic honeycomb body; 17-spray column; 18-first spray liquid feed tube; 19-first spray liquid fluid reservoir; 20-first delivery pump; 21-falling-film absorber; 22-second spray liquid fluid reservoir; 23-second delivery pump; 24-fountain head; 25-temperature-dropping fan.
Detailed description of the invention
As depicted in figs. 1 and 2, the Integrated Processing Unit of waste gas and waste residue in sodium methyl mercaptide production process, comprise heating by the exhaust gases and light mouth, the fire end that described heating by the exhaust gases lights mouth is arranged in heat-accumulation combustion stove, described heat-accumulation combustion stove one end is connected with the drying drum 11 for drying sludge, described drying drum 11 is connected with drying sludge collecting box 12, discharging opening 13 is provided with bottom described drying sludge collecting box 12, described drying sludge collecting box 12 top is provided with blast pipe 14, described blast pipe 14 is connected with first order spray condensing unit, the side of described first order spray condensing unit is provided with the first spray liquid feedway, the outlet side of described first order spray condensing unit is connected with second level spray condensing unit, the side of described second level spray condensing unit is provided with the second spray liquid feedway, spray condensing unit top, the described second level is provided with exhaust outlet, this device is mainly used to process the waste gas dimethyl sulfide in sodium methyl mercaptide production process and hydrogen sulfide, waste residue sodium sulphate.
Described heating by the exhaust gases is lighted mouth and is comprised igniting base 1, ceramic heat storage body 2 is filled with in described igniting base 1, the economizer bank 3 extended to outside described igniting base 1 is provided with through described ceramic heat storage body 2, described economizer bank 3 end be positioned at outside described igniting base 1 is connected with gas introducing tube 4, described gas introducing tube 4 is communicated with combustion oxygen pipe 5, described igniting base 1 is also communicated with waste gas inlet tube 6 and combustion air inlet tube 7, and described waste gas inlet tube 6 is communicated with described economizer bank 3 through described ceramic heat storage body 2, the described economizer bank 3 end correspondence being positioned at described igniting base 1 is provided with igniter 8, described igniting base 1 end is provided with flame horn mouth 9, and described flame horn mouth 9 is located in described heat-accumulation combustion stove.Described igniter 8 is the content in the art known by those of ordinary skill, here repeats no more.Be positioned at described economizer bank 3 end-enclosed of described igniting base 1, and its end perisporium is distributed with some ventholes 10, contributes to gas dispersion and export, improve combustion rate.
First gas introducing tube 4 is utilized to be injected by natural gas in economizer bank 3, then input combustion oxygen to mix, after igniting, economizer bank 3 internal temperature rises, along with the heat of economizer bank 3 conducts to ceramic heat storage body 2 gradually, the waste gas that waste gas inlet tube 6 is inputted heats up gradually, waste gas is being ignited by contacting with the naked light at economizer bank 3 rear portion after ceramic heat storage body 2, along with the mixing of combustion air, the ignition temperature of waste gas can reach about 1100 degree, along with regenerator temperature is promoted to more than 1000 degree by ceramic heat storage body 2 by combustion flame, can ensure that waste gas is oxidized completely, and the flame-out or problem such as insufficient of burning can be avoided when exhaust gas concentration is unstable.
Described heat-accumulation combustion stove comprises body of heater 15, is provided with the ceramic honeycomb body 16 for accumulation of heat, for collecting heat in described body of heater 15.
Described first order spray condensing unit comprises spray column 17, described spray column 17 top is provided with the first spray liquid feed tube 18, install in described spray column 17 and be distributed with the shower nozzle being communicated with described first spray liquid feed tube 18, the inwall of described spray column 17 is provided with anticorrosive coat, and is distributed with the circulating chilled water pipeline for lowering the temperature in described spray column 17.Described anticorrosive coat is set to polyethylene coating.Described first spray liquid feedway comprises the first spray liquid fluid reservoir 19, described first spray liquid fluid reservoir 19 is connected with the first delivery pump 20 by pipeline, described first delivery pump 20 is connected to described first spray liquid feed tube 18 by pipeline, and the spray liquid in the present embodiment in the first spray liquid fluid reservoir 19 is set to aqua calcis.Described second level spray condensing unit comprises falling-film absorber 21, and the periphery of described falling-film absorber 21 is provided with the fountain head 24 of cooling, and described fountain head 24 side is provided with temperature-dropping fan 25, can improve cooling-down effect further.Falling-film absorber 21 is the content in the art known by those of ordinary skill, here repeats no more.
Described second spray liquid feedway comprises the second spray liquid fluid reservoir 22, and described second spray liquid fluid reservoir 22 is connected with the second delivery pump 23 by pipeline, and described second delivery pump 23 is connected to described falling-film absorber 21 by pipeline.The spray liquid stored in described second spray liquid fluid reservoir 22 is ammoniacal liquor.
The specific works process of the present embodiment is as described below:
First the waste gas containing dimethyl sulfide enters heating by the exhaust gases and lights mouth, ignited by igniter 8 when the waste gas in nozzle arrives after ignition point, waste gas by with excessive air Homogeneous phase mixing after enter heat-accumulation combustion stove combustion, have in body of heater 15 ceramic honeycomb body 16 can ensure waste gas fully and oxygen react, sulfur dioxide is changed under the effect of high temperature, hot sulfur dioxide fully mixes with moist sodium sulphate in drying drum 11, heat is absorbed by sodium sulphate thus sulfur dioxide gas is cooled to less than 200 degree, sulfur dioxide gas enters first order spray condensing unit along with steam, the corrosion having polypropylene coating to prevent equipment in first order spray condensing unit, spray by using the aqua calcis of dilution, and lowered the temperature by circulating chilled water pipeline, when sulfur dioxide reduces temperature, major part sulfur dioxide can be dissolved in water, react with the aqua calcis of dilution and generate calcium sulfite and precipitate, the calcium sulfite of precipitation is drawn, in the outer filtered and recycled of the first spray condensing unit, by the circulating chilled water pipeline cooling water in first order spray condensing unit, heat water-soluble be with for sulfur dioxide is shifted out, ensure that reaction is carried out smoothly, enter the second level by a small amount of sulfur dioxide after the process of first order spray condensing unit and steam and spray condensing unit, falling film absorption reaction is carried out by using ammoniacal liquor, first order spray condensing unit is the falling-film absorber 21 adopting polypropylene and glass tube to make, ammoniacal liquor and form waste gas of sulfur dioxide carry out hybrid reaction at glass tube inwall, form ammonium sulfite solution, pass into appropriate air oxidation again and become ammonium sulfate recovery, remaining steam can directly be discharged in air.
The utility model lights mouth by heating by the exhaust gases and the main component dimethyl sulfide of stench in waste gas has been carried out oxy combustion by heat-accumulation combustion stove, the sodium sulphate of crystallization is carried out drying by drying drum 11 by the heat produced after burning, and dried anhydrous sodium sulfate can be used as anhydrous glauber salt and sells; Stench composition in waste gas effectively can be oxidized into sulfur dioxide by the flame in heat-accumulation combustion stove, and high temperature sulfur dioxide is reclaimed by the condensation of two-stage spray again, is conducive to the extraction and application of protection of the environment and waste residue.
Claims (7)
1. the Integrated Processing Unit of waste gas and waste residue in sodium methyl mercaptide production process, it is characterized in that: comprise heating by the exhaust gases and light mouth, the fire end that described heating by the exhaust gases lights mouth is arranged in heat-accumulation combustion stove, described heat-accumulation combustion stove one end is connected with the drying drum for drying sludge, described drying drum is connected with drying sludge collecting box, discharging opening is provided with bottom described drying sludge collecting box, described drying sludge collecting box top is provided with blast pipe, described blast pipe is connected with first order spray condensing unit, the side of described first order spray condensing unit is provided with the first spray liquid feedway, the outlet side of described first order spray condensing unit is connected with second level spray condensing unit, the side of described second level spray condensing unit is provided with the second spray liquid feedway, spray condensing unit top, the described second level is provided with exhaust outlet, described heating by the exhaust gases is lighted mouth and is comprised igniting base, ceramic heat storage body is filled with in described igniting base, the economizer bank extended to outside described igniting base is provided with through described ceramic heat storage body, the described economizer bank end be positioned at outside described igniting base is connected with gas introducing tube, described gas introducing tube is communicated with combustion oxygen pipe, described igniting base is also communicated with waste gas inlet tube and combustion air inlet tube, and described waste gas inlet tube is communicated with described economizer bank through described ceramic heat storage body, the described economizer bank end correspondence being positioned at described igniting base is provided with igniter, described igniting base end is provided with flame horn mouth, and described flame horn mouth is located in described heat-accumulation combustion stove, be positioned at the described economizer bank end-enclosed of described igniting base, and its end perisporium is distributed with some ventholes.
2. the Integrated Processing Unit of waste gas and waste residue in sodium methyl mercaptide production process as claimed in claim 1, is characterized in that: described heat-accumulation combustion stove comprises body of heater, is provided with the ceramic honeycomb body for accumulation of heat in described body of heater.
3. the Integrated Processing Unit of waste gas and waste residue in sodium methyl mercaptide production process as claimed in claim 1, it is characterized in that: described first order spray condensing unit comprises spray column, described spray column top is provided with the first spray liquid feed tube, install in described spray column and be distributed with the shower nozzle being communicated with described first spray liquid feed tube, the inwall of described spray column is provided with anticorrosive coat, and is distributed with the circulating chilled water pipeline for lowering the temperature in described spray column.
4. the Integrated Processing Unit of waste gas and waste residue in sodium methyl mercaptide production process as claimed in claim 3, is characterized in that: described anticorrosive coat is set to polyethylene coating.
5. the Integrated Processing Unit of waste gas and waste residue in sodium methyl mercaptide production process as claimed in claim 1, it is characterized in that: described first spray liquid feedway comprises the first spray liquid fluid reservoir, described first spray liquid fluid reservoir is connected with the first delivery pump by pipeline, and described first delivery pump is connected to described first spray liquid feed tube by pipeline.
6. the Integrated Processing Unit of waste gas and waste residue in sodium methyl mercaptide production process as claimed in claim 1, is characterized in that: described second level spray condensing unit comprises falling-film absorber, and the periphery of described falling-film absorber is provided with the fountain head of cooling; Described second spray liquid feedway comprises the second spray liquid fluid reservoir, and described second spray liquid fluid reservoir is connected with the second delivery pump by pipeline, and described second delivery pump is connected to described falling-film absorber by pipeline.
7. the Integrated Processing Unit of waste gas and waste residue in sodium methyl mercaptide production process as claimed in claim 6, is characterized in that: described fountain head side is provided with temperature-dropping fan.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420206762.2U CN204275781U (en) | 2014-04-26 | 2014-04-26 | The Integrated Processing Unit of waste gas and waste residue in sodium methyl mercaptide production process |
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| CN201420206762.2U CN204275781U (en) | 2014-04-26 | 2014-04-26 | The Integrated Processing Unit of waste gas and waste residue in sodium methyl mercaptide production process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104944660A (en) * | 2015-07-13 | 2015-09-30 | 陵县鲁鑫工贸有限公司 | Sodium methyl mercaptide production environment-protecting processing device and technology |
| WO2019011346A1 (en) * | 2017-07-14 | 2019-01-17 | 南京林业大学 | Stable and environmentally friendly combustion method for biomass gasification combustible gas, and environmentally friendly combustion chamber |
-
2014
- 2014-04-26 CN CN201420206762.2U patent/CN204275781U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104944660A (en) * | 2015-07-13 | 2015-09-30 | 陵县鲁鑫工贸有限公司 | Sodium methyl mercaptide production environment-protecting processing device and technology |
| CN104944660B (en) * | 2015-07-13 | 2017-03-01 | 陵县鲁鑫工贸有限公司 | Sodium methyl mercaptide produces environment-friendly processing unit and its environment-friendly treating process |
| WO2019011346A1 (en) * | 2017-07-14 | 2019-01-17 | 南京林业大学 | Stable and environmentally friendly combustion method for biomass gasification combustible gas, and environmentally friendly combustion chamber |
| US11143400B2 (en) | 2017-07-14 | 2021-10-12 | Nanjing Forestry University | Stable and environmentally friendly combustion method for biomass gasification, combustible gas, and environmentally friendly combustion chamber |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20160426 |