CN107827793A - A kind of DMDS refining separation device - Google Patents
A kind of DMDS refining separation device Download PDFInfo
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- CN107827793A CN107827793A CN201711284073.8A CN201711284073A CN107827793A CN 107827793 A CN107827793 A CN 107827793A CN 201711284073 A CN201711284073 A CN 201711284073A CN 107827793 A CN107827793 A CN 107827793A
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- delivery pump
- dmds
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- methyl mercaptan
- condenser
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C319/00—Preparation of thiols, sulfides, hydropolysulfides or polysulfides
- C07C319/26—Separation; Purification; Stabilisation; Use of additives
- C07C319/28—Separation; Purification
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a kind of DMDS refining separation method and device, it is main to include flashing through flash tank successively from the thick DMDS solution that DMDS synthesis system comes out, the pressurization removing of methyl mercaptan removing tower, DMDS product tower normal pressure refines, dimethyltrisulfide concentration tower vacuum separation, the qualified DMDS product of final output, and obtain that purity is higher, the more preferable dimethyltrisulfide of value, while flash tank and the hydrogen sulfide of methyl mercaptan removing recycle through compressor into methyl mercaptan synthesis system.Existing DMDS distillation system high energy consumption is this method solve, the problem of product purity is low, and product recovery rate is not high, the present invention has the features such as technological process is simple, and easy to operate, good separating effect, product recovery rate is high, and economic benefit is obvious.
Description
Technical field
The present invention relates to the refining spearation technical field of DMDS product, particularly belongs to a kind of DMDS and refines
Separator.
Background technology
DMDS is a kind of organic compounds containing sulfur, is light yellow transparent liquid under normal temperature, dissolves in alcohol ether, insoluble
Yu Shui, foul smelling.DMDS is widely used, wide market, and it can be as the pre- of oil hydrodesulfurization catalyst
Vulcanizing agent, industrial solvent, cracking of ethylene coking inhibitor, raw material, soil fumigant, the stench mark of production insecticide " Entex "
Earnest, while be also that China provides to allow the flavorant used.
The method of synthesization of dimethyl disulfide mainly has at present：Dimethyl sulfate ester process, methyl mercaptan oxidizing process, methanol vulcanization method,
Methyl mercaptan vulcanization method.Because methyl mercaptan vulcanization method technological process is simple, working condition is gentle, and technology and equipment is less demanding, than
Relatively it is adapted to domestic progress industrialized production.In the course of reaction of methyl mercaptan vulcanization method synthesization of dimethyl disulfide, from reflecting
Material mainly contain hydrogen sulfide, methyl mercaptan, DMDS, dimethyltrisulfide, in order to obtain DMDS product, it is necessary to
Refining spearation is carried out to the material, other impurities are removed.The dimethyl that current DMDS refining spearation technique obtains
Two sulphur product purities are not high, and separating effect is not high, and it contains more than 30% in the material that DMDS product tower bottom of towe comes out
DMDS and 40-60% dimethyltrisulfide solution, if this material directly return system because containing the higher diformazan of concentration
The sulphur of base two has interference, while the energy consumption increase of device to preceding system；DMDS and dimethyltrisulfide is caused to lose if selling outside
Larger, product utilization rate is low.Therefore there is high energy consumption, inferior separating effect in the technique, the problems such as Product recycling and utilization rate are low.
The content of the invention
The invention aims to solve above-mentioned technical problem, there is provided one kind has technological process simple operations side
Just, good separating effect, product recovery rate is high, the obvious DMDS refining separation method of economic benefit and device.
The technical scheme that specifically uses of the present invention is：A kind of DMDS refining separation device, it is characterised in that including
The removing mechanism that is sequentially connected, separating mechanism, purification mechanism, the device also include burned waste gas mechanism, methyl mercaptan combination mechanism,
Methyl mercaptan vulcanization mechanism, waste gas treatment mechanism, finished product collect preservation mechanism, and the removing mechanism is used to carry out sulphur to material solution
Change hydrogen removing processing, the removing mechanism is divided into two output ends and connects methyl mercaptan combination mechanism and separating mechanism respectively, described
Separating mechanism is divided into three output ends and connects finished product collection preservation mechanism, purification mechanism and burned waste gas mechanism respectively, described to carry
Pure mechanism is divided into three output ends, connects waste gas treatment mechanism, methyl mercaptan vulcanization mechanism, finished product collecting mechanism respectively；
Further it is described removing mechanism include flash tank, the first delivery pump, methyl mercaptan removing tower, the first condenser, first time
Chute, the second delivery pump and the 3rd delivery pump, the flash tank have a feed end, and thick DMDS is entered by feed end
In flash tank, the flash tank has two output ends, and an output end is connected with first delivery pump, first delivery pump
It is connected with the methyl mercaptan removing tower, the methyl mercaptan removing tower has two output ends, an output end and the described first condensation
Device connects, and another output is connected with the 3rd delivery pump, and first condenser has two output ends, an output end and
The first backflash connection, first backflash are connected with second delivery pump, second delivery pump and methyl mercaptan
Vulcanize mechanism connection, the 3rd delivery pump is connected with the separating mechanism；
Further, the removing mechanism also includes compressor, described another output end of first condenser and the flash tank
Another output end is connected with the compressor, and the compressor is connected with methyl mercaptan combination mechanism；
Further, the separating mechanism includes DMDS product tower, the second condenser, the second backflash, the 4th conveying
Pump, the 5th delivery pump, the DMDS product tower have two output ends, and an output end connects with second condenser
Connect, another output end is connected with the 5th delivery pump, and second condenser there are two output ends, and an output end is with giving up
Gas burns mechanism connection, and another output end is connected with second backflash, second backflash and the described 4th conveying
Pump is connected, and the 4th delivery pump is connected with finished product collecting mechanism, and the 5th delivery pump is connected with the purification mechanism；
Further, the purification mechanism includes dimethyltrisulfide concentration tower, the 3rd condenser, the 3rd backflash, the 6th conveying
Pump, the dimethyltrisulfide concentration tower have three output ends, and an output end is connected with the 3rd condenser, and the described 3rd is cold
Condenser has two output ends, and an output end is connected with the 3rd backflash, and the 3rd backflash connects with the 6th delivery pump
Connect；
Further, the 6th delivery pump for can pressurized delivered pump, the 6th delivery pump has two output ends, an output
End is connected with finished product collecting mechanism, and another output end is connected with DMDS product tower；
Further, the purification mechanism also includes the 7th delivery pump and the 8th delivery pump, and the dimethyltrisulfide concentration tower is another
Outer two output ends are connected with the 7th delivery pump and the 8th rear pump respectively, the 7th delivery pump and methyl mercaptan sulphur
Change mechanism connection, the 8th delivery pump is connected with the finished product collecting mechanism；
Further, the 3rd upper end of condenser is provided with vacuum mechanism, another output end of the 3rd condenser with it is described
Vacuum mechanism is connected, and the vacuum mechanism is connected with waste gas treatment mechanism.
Operation principle：
The thick DMDS solution that DMDS synthesis system is come is introduced into flash tank removing hydrogen sulfide, flash tank bottom
Portion's solution is separated through the first delivery pump into methyl mercaptan removing tower top, and top gaseous phase enters after the condensation of the first condenser
First backflash, methyl mercaptan vulcanization mechanism is pumped into from the methyl mercaptan solution that the first backflash comes out through the second conveying, from first
Methyl mercaptan is sent into after entering compressor pressure-raising together with the hydrogen sulfide that the fixed gas that condenser gaseous phase outlet comes out flashes with flash tank
Combination mechanism；DMDS solution after concentrate comes out from methyl mercaptan removing tower bottom of towe, enters diformazan through the 3rd delivery pump
The sulphur product tower of base two, tower top enter the second backflash, the smart DMDS that the second backflash comes out through the condensation of the second condenser
Product is pumped into finished product collecting mechanism storage through the 4th conveying, and tower top fixed gas burns into burned waste gas mechanism；Dimethyl two
The solution that sulphur product tower bottom of towe comes out enters in the middle part of dimethyltrisulfide concentration tower through the 5th delivery pump, and the gas phase that tower top comes out enters
3rd condenser, the 3rd condenser gaseous phase outlet are connected to form vacuum with vacuum mechanism, and the tail gas that vacuum system comes out enters useless
Gas disposal mechanism, the lime set that the 3rd condenser comes out enter the 3rd backflash, the qualified dimethyl after the pressurization of the 6th delivery pump
Two sulphur products are stored into finished product collecting mechanism, and substandard product is sent into DMDS product tower weight and newly refined, in dimethyl
The dimethyltrisulfide solution of trithio concentration tower middle and lower part extraction high concentration is pumped into methyl mercaptan vulcanization mechanism, bottom of towe through the 7th conveying
The delivery pump of restructuring lease making the 8th collect, can both recycle, can externally sell again.
In the preferred embodiment of the present invention, in order to reach good rectification effect, system is synthesized from DMDS
The thick DMDS solution that comes of uniting is introduced into after flash tank further removes hydrogen sulfide, then carries out refined point of DMDS
From.
In the preferred embodiment of the present invention, in order to improve DMDS product yield, produced in DMDS
The outlet of product tower bottom of towe is provided with dimethyltrisulfide concentration tower, and tower top can obtain qualified DMDS.
In the preferred embodiment of the present invention, dimethyltrisulfide concentrate column overhead is connected with vacuum system, makes diformazan
The sulphur of base two and dimethyltrisulfide separate under vacuum, and concentrate and refining effect are more preferable.
This programme has the advantage that：
The purity of the DMDS product column overhead DMDS of the present apparatus is exported in bottom of towe and connected more than 99.5%
Dimethyltrisulfide concentration tower is connected to, tower top obtains qualified DMDS, and the rate of recovery of product improves, the dimethyl of the present apparatus
Trithio concentration tower middle and lower part obtains the dimethyltrisulfide of high-purity, small to preceding systematic influence when return system recycles, can
So that the feed stock conversion of preceding system improves, present apparatus Making programme is simple, easy to operate, good separating effect, product recovery rate
Height, economic benefit are obvious.
Brief description of the drawings
Fig. 1 is technological process and the installation drawing of the present invention.
In figure：1 be removing mechanism, 2 be separating mechanism, 3 be purification mechanism, 4 be burned waste gas mechanism, 5 be methyl mercaptan close
Into mechanism, 6 be methyl mercaptan vulcanization mechanism, 7 be waste gas treatment mechanism, 8 be finished product collecting mechanism, 11 be flash tank, 12 be first
Delivery pump, 13 be methyl mercaptan removing tower, 14 be the first condenser, 15 be the first backflash, 16 be the second delivery pump, 17 be the 3rd
Delivery pump, 18 be compressor, 21 be DMDS product tower, 22 be the second condenser, 23 be the second backflash, 24 be the 4th
Delivery pump, 25 be the 5th delivery pump, 31 be dimethyltrisulfide concentration tower, 32 be the 3rd condenser, 33 be the 3rd backflash, 34 be
6th delivery pump, 35 be the 7th delivery pump, 36 be the 8th delivery pump, 37 be vacuum system.
Embodiment
With reference to the implementation process of technical scheme and accompanying drawing, in detail narration this programme：
A kind of DMDS refining separation device, including removing mechanism 1, separating mechanism 2, the purification mechanism 3 being sequentially connected, should
Device also includes burned waste gas mechanism 4, methyl mercaptan combination mechanism 5, methyl mercaptan vulcanization mechanism 6, waste gas treatment mechanism 7, finished product and received
Collect preservation mechanism 8, removing mechanism 1 is used to carry out material solution hydrogen sulfide stripping processing, and removing mechanism 1 is divided to for two output ends
Methyl mercaptan combination mechanism 5 and separating mechanism 2 are connected respectively, and separating mechanism 2 divides connects finished product collection storage respectively for three output ends
Hide mechanism 8, purification mechanism 3 and burned waste gas mechanism 4, purification mechanism 3 divides for three output ends, connects waste gas treatment mechanism respectively
7th, methyl mercaptan vulcanization mechanism 8, finished product collecting mechanism 9；
Further removing mechanism 1 includes flash tank 11, the first delivery pump 12, methyl mercaptan removing tower 13, the first condenser 14, the
One backflash 15, the second delivery pump 16 and the 3rd delivery pump 17, flash tank 11 have a feed end, and thick DMDS is by entering
Expect that end enters in flash tank 11, flash tank 11 there are two output ends, and an output end is connected with the first delivery pump 12, the first conveying
Pump 12 is connected with methyl mercaptan removing tower 13, and methyl mercaptan removing tower 13 has two output ends, an output end and the first condenser 14
Connection, another output is connected with the 3rd delivery pump 17, and the first condenser 14 has two output ends, an output end and first time
Chute 15 is connected, and the first backflash 15 is connected with the second delivery pump 16, and the second delivery pump 16 is connected with methyl mercaptan vulcanization mechanism 6,
3rd delivery pump 17 is connected with separating mechanism 2；
Further, removing mechanism 1 also includes compressor 18, first another output end of condenser 14 and flash tank 11 another
Output end is connected with compressor 18, and compressor 18 is connected with methyl mercaptan combination mechanism 5；
Further, it is defeated to include DMDS product tower 21, the second condenser 22, the second backflash the 23, the 4th for separating mechanism 2
Pump 24, the 5th delivery pump 25 are sent, DMDS product tower 21 there are two output ends, and an output end connects with the second condenser 22
Connect, another output end is connected with the 5th delivery pump 25, and the second condenser 22 there are two output ends, and an output end is burnt with waste gas
Mechanism 4 to be burnt to connect, another output end is connected with the second backflash 23, and the second backflash 23 is connected with the 4th delivery pump 24, the
Four delivery pumps 24 are connected with finished product collecting mechanism 9, and the 5th delivery pump 25 is connected with purification mechanism 3；
Further, it is defeated including dimethyltrisulfide concentration tower 31, the 3rd condenser 32, the 3rd backflash the 33, the 6th to purify mechanism 3
Pump 34 is sent, dimethyltrisulfide concentration tower 31 there are three output ends, and an output end is connected with the 3rd condenser 32, the 3rd condenser
32 have two output ends, and an output end is connected with the 3rd backflash 33, and the 3rd backflash 33 is connected with the 6th delivery pump 34；
Further, the 6th delivery pump 34 for can pressurized delivered pump, the 6th delivery pump 34 has two output ends, an output end with
Finished product collecting mechanism 9 is connected, and another output end is connected with DMDS product tower 21；
Further, purification mechanism 3 also includes the 7th delivery pump 35 and the 8th delivery pump 36, and dimethyltrisulfide concentration tower 31 is in addition
Two output ends are connected with the 7th delivery pump 35 and the 8th delivery pump 36 respectively, the 7th delivery pump 35 and methyl mercaptan vulcanization mechanism 6
Connection, the connection of the 8th delivery pump 36 are connected with finished product collecting mechanism 9；
Further, the upper end of the 3rd condenser 32 is provided with vacuum mechanism 37, the 3rd another output end of condenser 32 and vacuum machine
Structure 37 is connected, and vacuum mechanism 37 is connected with waste gas treatment mechanism 7.
Specific embodiment：The thick DMDS solution to come from DMDS synthesis system, which mainly forms, is：Diformazan
The sulphur 32% of base two, trimethyl trithio 55%, methyl mercaptan 10%, and hydrogen sulfide and other Trace Components, its flow is 3500Kg/h
Flashed into flash tank absolute pressure, control operation pressure flashes away in 0.05MpaG, now more than 90% hydrogen sulfide, removes sulphur
The solution for changing hydrogen contains a certain amount of methyl mercaptan, it is necessary to be separated into methyl mercaptan removing tower, controls methyl mercaptan removing tower pressure
For power in 100-250KpaG, the methyl mercaptan solution that tower top obtains DMDS content≤1% enters methyl mercaptan curing system, tower top
The hydrogen sulfide that fixed gas comes out with flash tank is mixed into compressor, and the hydrogen sulfide gas after pressurization is sent into methyl mercaptan synthesis system
System；DMDS solution after concentrate removes tower bottom from methyl mercaptan and enters DMDS product tower through pump, controls tower top
Pressure adjusts suitable reflux ratio by tower top DMDS purity is stable and finished product storage tank is sent into more than 99.5% in 0-30KpaG,
Bottom of towe contains DMDS and the solution of dimethyltrisulfide enters dimethyltrisulfide concentration tower, and adjustment vacuum is in -0.1-
Between 0KpaG, tower top obtains qualified DMDS and is pumped up into finished product storage tank after the separation of dimethyltrisulfide concentration tower,
Dimethyltrisulfide concentration tower middle and lower part obtains the dimethyltrisulfide solution that concentration is more than 80% and enters methyl mercaptan sulphur after pump pressure-raising
Change system, the restructuring lease making pump of bottom of towe collect, can both recycle, and can externally sell again.Closed from DMDS
The thick DMDS solution to come into system, which mainly forms, is：DMDS 32%, trimethyl trithio 55%, methyl mercaptan
10%, and hydrogen sulfide and other Trace Components, its flow are that 3500Kg/h flashes into the absolute pressure of flash tank 11, control operation pressure
Power flashes away in 0.05MpaG, now more than 90% hydrogen sulfide, and the solution for removing hydrogen sulfide contains a certain amount of methyl mercaptan,
Need to be separated into methyl mercaptan removing tower 13, the pressure of control methyl mercaptan removing tower 13 obtains two in 100-250KpaG, tower top
The methyl mercaptan solution of sulfur content≤1% of methyl two enters methyl mercaptan vulcanization mechanism 6, the vulcanization that tower top fixed gas comes out with flash tank
Hydrogen is mixed into compressor 18, and the hydrogen sulfide gas after pressurization is sent into methyl mercaptan combination mechanism 5；DMDS after concentrate is molten
Liquid enters DMDS product tower 21 from the bottom of methyl mercaptan removing tower 13 through pump, and control tower top pressure is in 0-30KpaG, regulation
Tower top DMDS purity stabilization is sent into finished product collecting mechanism 8 by suitable reflux ratio more than 99.5%, and bottom of towe contains dimethyl
The solution of two sulphur and dimethyltrisulfide enters dimethyltrisulfide concentration tower 31, and adjustment vacuum is between -0.1-0KpaG, through two
Tower top obtains qualified DMDS and is pumped up into finished product collecting mechanism 8, in dimethyl after methyl trisulfide concentration tower 31 separates
The middle and lower part of trithio concentration tower 31 obtains the dimethyltrisulfide solution that concentration is more than 80% and enters methyl mercaptan vulcanizer after pump pressure-raising
Structure 6, the heavy constituent of bottom of towe are pumped up, into finished product collecting mechanism 8, can both recycling, and can externally selling again.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (8)
1. a kind of DMDS refining separation device, it is characterised in that including the removing mechanism being sequentially connected（1）, seperator
Structure（2）, purification mechanism（3）, the device also includes burned waste gas mechanism（4）, methyl mercaptan combination mechanism（5）, methyl mercaptan vulcanizer
Structure（6）, waste gas treatment mechanism（7）, finished product collecting mechanism（8）, the removing mechanism（1）For carrying out hydrogen sulfide to material solution
Removing is handled, the removing mechanism（1）It is divided into two output ends and connects methyl mercaptan combination mechanism respectively（5）And separating mechanism（2）,
The separating mechanism（2）It is divided into three output ends and connects finished product collecting mechanism respectively（8）, purification mechanism（3）With burned waste gas machine
Structure（4）, the purification mechanism（3）It is divided into three output ends, connects waste gas treatment mechanism respectively（7）, methyl mercaptan vulcanization mechanism
（6）, finished product collecting mechanism（8）.
2. a kind of DMDS refining separation method according to claim 1 and device, it is characterised in that：The removing
Mechanism（1）Including flash tank（11）, the first delivery pump（12）, methyl mercaptan removing tower（13）, the first condenser（14）, first backflow
Groove（15）, the second delivery pump（16）With the 3rd delivery pump（17）, the flash tank（11）It is provided with feed end, thick DMDS
The flash tank is entered by feed end（11）The flash tank（11）Inside there are two output ends, an output end and described first
Delivery pump（12）Connection, first delivery pump（12）With the methyl mercaptan removing tower（13）Connection, the methyl mercaptan removing tower
（13）There are two output ends, an output end and first condenser（14）Connection, another output and the described 3rd conveying
Pump（17）Connection, first condenser（14）There are two output ends, an output end and first backflash（15）Connection,
First backflash（15）With second delivery pump（16）Connection, second delivery pump（16）Vulcanize mechanism with methyl mercaptan
（6）Connection, the 3rd delivery pump（17）With the separating mechanism（2）Connection.
3. a kind of DMDS refining separation method according to claim 1 and device, it is characterised in that：The removing
Mechanism（1）Also include compressor（18）, first condenser（14）Another output end and the flash tank（11）Another
Output end and the compressor（18）Connection, the compressor（18）With methyl mercaptan combination mechanism（5）Connection.
4. a kind of DMDS refining separation method according to claim 1 and device, it is characterised in that：The separation
Mechanism（2）Including DMDS product tower（21）, the second condenser（22）, the second backflash（23）, the 4th delivery pump（24）、
5th delivery pump（25）, the DMDS product tower（21）There are two output ends, an output end and the described second condensation
Device（22）Connection, another output end and the 5th delivery pump（25）Connection, second condenser（22）There are two outputs
End, an output end and burned waste gas mechanism（4）Connection, another output end and second backflash（23）Connection, it is described
Second backflash（23）With the 4th delivery pump（24）Connection, the 4th delivery pump（24）With finished product collecting mechanism（8）Even
Connect, the 5th delivery pump（25）With the purification mechanism（3）Connection.
5. a kind of DMDS refining separation method according to claim 1 and device, it is characterised in that：The purification
Mechanism（3）Including dimethyltrisulfide concentration tower（31）, the 3rd condenser（32）, the 3rd backflash（33）, the 6th delivery pump（34）,
The dimethyltrisulfide concentration tower（31）There are three output ends, an output end and the 3rd condenser（32）Connection, it is described
3rd condenser（32）There are two output ends, an output end and the 3rd backflash（33）Connection, the 3rd backflash（33）
With the 6th delivery pump（34）Connection.
6. a kind of DMDS refining separation method according to claim 5 and device, it is characterised in that：Described 6th
Delivery pump（34）For can pressurized delivered pump, the 6th delivery pump（34）There are two output ends, an output end is collected with finished product
Mechanism（8）Connection, another output end and DMDS product tower（21）Connection.
7. a kind of DMDS refining separation method according to claim 1 and device, it is characterised in that：The purification
Mechanism（3）Also include the 7th delivery pump（35）With the 8th delivery pump（36）, the dimethyltrisulfide concentration tower（31）Another two is defeated
Go out end respectively with the 7th delivery pump（35）With the 8th delivery pump（36）Connection, the 7th delivery pump（35）With first sulphur
Alcohol vulcanizes mechanism（6）Connection, the 8th delivery pump（36）With the finished product collecting mechanism（8）Connection.
8. a kind of DMDS refining separation method according to claim 5 and device, it is characterised in that：Described 3rd
Condenser（32）Upper end is provided with vacuum mechanism（37）, the 3rd condenser（32）Another output end and the vacuum mechanism
（37）Connection, the vacuum mechanism（37）With waste gas treatment mechanism（7）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711284073.8A CN107827793A (en) | 2017-12-07 | 2017-12-07 | A kind of DMDS refining separation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711284073.8A CN107827793A (en) | 2017-12-07 | 2017-12-07 | A kind of DMDS refining separation device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103864650A (en) * | 2014-03-20 | 2014-06-18 | 中国海洋石油总公司 | Method for continuously producing dimethyl disulfide |
| CN104592070A (en) * | 2015-01-13 | 2015-05-06 | 湖北兴发化工集团股份有限公司 | Preparation method of dimethyl disulfide |
| CN104610106A (en) * | 2015-01-13 | 2015-05-13 | 湖北兴发化工集团股份有限公司 | Method for producing dimethyl disulfide by using methyl mercaptan and sulfur vaporization method |
| CN105085338A (en) * | 2015-08-25 | 2015-11-25 | 成都德美工程技术有限公司 | Production method and apparatus of dimethyl disulfide |
-
2017
- 2017-12-07 CN CN201711284073.8A patent/CN107827793A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103864650A (en) * | 2014-03-20 | 2014-06-18 | 中国海洋石油总公司 | Method for continuously producing dimethyl disulfide |
| CN104592070A (en) * | 2015-01-13 | 2015-05-06 | 湖北兴发化工集团股份有限公司 | Preparation method of dimethyl disulfide |
| CN104610106A (en) * | 2015-01-13 | 2015-05-13 | 湖北兴发化工集团股份有限公司 | Method for producing dimethyl disulfide by using methyl mercaptan and sulfur vaporization method |
| CN105085338A (en) * | 2015-08-25 | 2015-11-25 | 成都德美工程技术有限公司 | Production method and apparatus of dimethyl disulfide |
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