CN207294649U - A kind of device for preparing the misery thioesters of chloromethane - Google Patents
A kind of device for preparing the misery thioesters of chloromethane Download PDFInfo
- Publication number
- CN207294649U CN207294649U CN201721320902.9U CN201721320902U CN207294649U CN 207294649 U CN207294649 U CN 207294649U CN 201721320902 U CN201721320902 U CN 201721320902U CN 207294649 U CN207294649 U CN 207294649U
- Authority
- CN
- China
- Prior art keywords
- tank
- tower
- thioesters
- misery
- reactor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Field of chemical equipment is the utility model is related to, specifically a kind of device for preparing the misery thioesters of chloromethane.Including reaction unit, extraction element, it is provided with nitrogen pot and the reaction unit is connected to by pipeline, and tail gas is set to destroy tower outside the reaction unit, the reaction unit is connected to the cleaning device by pipeline, the reaction unit includes solid phosgene tank, organic solution tank, tertiary amine catalyst tank, spicy thioalcohol tank, reactor, the cleaning device is connected to the extraction element by pipeline, the cleaning device includes pickling tower, caustic wash tower, salt water scrubber, the extraction element connects finished product kettle, the extraction element includes drier, it is evaporated under reduced pressure device.The utility model uses solid phosgene, and reaction condition is gentle, easy-to-operate, reduces the generation of accessory substance, improves product earning rate, tail gas is rationally handled, environmentally protective.
Description
Technical field
Field of chemical equipment is the utility model is related to, specifically a kind of device for preparing the misery thioesters of chloromethane.
Background technology
Thio chloro-formate is a kind of important chemical products, is widely used in medicine, pesticide etc..Industrial production
Thio chloro-formate, reacts generation at low temperature under catalyst using containing mercaptan with phosgene.Phosgene, also known as phosgene,
High poison, non-ignitable, chemical reactivity is higher, meet water after have aggressive, be slightly soluble in water, be dissolved in aromatic hydrocarbons, benzene, carbon tetrachloride,
The majority organic solvent such as chloroform, acetic acid, the industrial mixture using carbon monoxide and chlorine are made by activated carbon.Solid light
Gas is called triphosgene, is a kind of widely used green chemical products, has in fine chemistry industry and organic synthesis field important
Prospect, dissolves in the organic solvents such as dichloromethane, chloroform, ether, ethanol, tetrahydrofuran, toluene, it is opposite with for hypertoxic phosgene
Boiling point is high, surface vapor pressure is low, heat endurance is high, is only handled as general poisonous substance, phosgene can be replaced to carry out a variety of organic anti-
Should.
However, the one kind of the misery thioesters of chloromethane as thio chloro-carbonic acid, its Exploitation degree is far from enough, should give weight
Depending on and develop, and other equipment for producing thio chloro-carbonic acids use gaseous state or liquid phosgene mostly, and reaction process is more fierce,
Earning rate is not but high, and easily produces accessory substance, for this present situation, it is necessary to research and develop one kind prepare the misery thioesters of chloromethane can
To do reactant using more stable, the safer solid phosgene of opposite gaseous state or liquid phosgene, and by-product produce are reduced as far as possible
The raw device for improving product earning rate.
Utility model content
The utility model is in order to overcome above-mentioned technical problem, there is provided a kind of device for preparing the misery thioesters of chloromethane.
To achieve the above object, the utility model uses following technical scheme：
A kind of device for preparing the misery thioesters of chloromethane, including reaction unit, cleaning device, extraction element, are provided with nitrogen
Tank is connected to the reaction unit by pipeline, and sets tail gas to destroy tower outside the reaction unit, and the reaction unit leads to
Piping is connected to the cleaning device, and the cleaning device is connected to the extraction element, the extraction element by pipeline
Connect finished product kettle.
Preferably, the reaction unit includes solid phosgene tank, organic solution tank, catalyst tank, spicy thioalcohol tank, reaction
Device, the solid phosgene tank are connected to mixing tube with the organic solution tank, and solid phosgene is dissolved in organic in the mixing tube
In solution, the mixing tube is connected to the reactor feed end, and the catalyst tank and the spicy thioalcohol tank directly pass through
Pipeline is connected to the reactor feed end.
Preferably, being equipped with dropwise addition control valve with the mixing tube junction in the reactor, solution is slowly added dropwise
To the inside reactor, reaction can be come into full contact with and can effectively control reaction process.
Preferably, it is equipped with agitating device in the reactor.
Preferably, the reactor adds the pungent of fixed amount every time using the operating type of intermittent addition reactant
Mercaptan and phosgene solution, and the catalyst tank always conveys excess catalyst into the reactor in advance, reduces inessential
The generation of chemical reaction, suppresses the generation of accessory substance.
Preferably, being equipped with temperature control equipment outside the reactor, the reaction temperature in the reactor can be controlled
Degree and soaking time.
Preferably, the extraction element includes vacuumizing tower, filtration tank, described vacuumize in tower is equipped with aspiration pump, leads to
Cross gas pipeline and connect the tail gas destruction tower, the tower discharge end that vacuumizes connects the filtration tank feed end, the filtering
Tower discharge end connects the tail gas and destroys tower and the finished product kettle respectively again.
Preferably, the tail gas, which is destroyed in tower, is equipped with hydrolyst, while sequentially connected water is provided with outlet
Absorb, alkali adsorption tower, tail gas destructive rate is up to more than 95%.
Beneficial effect is：A kind of device for preparing the misery thioesters of chloromethane of the utility model uses solid phosgene, reacts bar
Part is gentle, easy-to-operate, more stablizes safety using the device of gaseous state or liquid phosgene than tradition, and passes through excessive
Organic solvent and tertiary amine catalyst reduce the generation of accessory substance, improve product earning rate, tail gas are rationally handled, green ring
Protect.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical solution of the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all of the figs, it is similar
Element or part are generally identified by similar reference numeral.In attached drawing, each element or part might not be according to actual ratios
Draw.
Fig. 1 is a kind of device flow chart for preparing the misery thioesters of chloromethane of the utility model.
Embodiment
The utility model is further described with reference to embodiment.
As shown in Figure 1, a kind of device for preparing the misery thioesters of chloromethane, including reaction unit, extraction element, it is provided with nitrogen
Tank 6 is connected to the reaction unit by gas pipeline, is to the reaction unit after the completion of working as primary first-order equation using aspiration pump
Excessive nitrogen is inside passed through, drives remaining phosgene and hydrogen chloride gas in reaction unit out of, and tail is set outside the reaction unit
Gas destroys tower 7, and the remaining phosgene and hydrogen chloride gas in reaction unit enter tail gas by gas pipeline and destroy tower 7, the tail
Gas destroys in tower 7 and is equipped with hydrolyst, and destroying the outlet of tower 7 in the tail gas is provided with sequentially connected water absorption, Alkali absorption
Tower, tail gas destructive rate are environmentally protective up to more than 95%；The reaction unit is connected to the extraction element, institute by pipeline
Stating reaction unit includes solid phosgene tank 1, organic solution tank 2, catalyst tank 3, spicy thioalcohol tank 4, reactor 5, the solid light
Gas tank 1 is connected to mixing tube with the organic solution tank 2, and solid phosgene is substantially soluble in organic solution in mixing tube, described
Mixing tube is connected to 5 feed end of reactor, and dropwise addition control is being equipped with the mixing tube junction in the reactor 5
Valve, phosgene solution are slowly added dropwise into inside the reactor 5, can be come into full contact with reaction and can effectively be controlled reaction process, light
The usage amount of gas is relative to 1 mole of spicy thioalcohol, and usually more than 1 mole, be preferably 1.05~2 moles, 3 He of catalyst tank
The spicy thioalcohol tank 4 is directly connected to 5 feed end of reactor by pipeline, and the reactor 5 uses intermittent addition
The mode of reactant, catalyst and spicy thioalcohol are charged first in the reactor 5, and phosgene solution is slowly being dripped into reactor 5
Add, and the catalyst tank 3 always conveys excess tertiary amine catalyst into the reactor 5 in advance, and it is anti-to reduce inessential chemistry
The generation answered, suppresses the generation of accessory substance, and reaction principle is as follows：
Agitating device is equipped with the reactor 5, it is ensured that two kinds of reactants can react completely in the reactor 5,
The reactor 5 is externally provided with temperature control equipment, controls reaction temperature and soaking time in the reactor 5, described in holding
Low-temperature condition is in reactor 5 under normal condition；The extraction element includes vacuumizing tower 8, filtration tank 9, described to vacuumize
Is equipped with aspiration pump in tower 8, the solution in the reactor 5 after reaction be transported to described in vacuumize in tower 8, carry out vacuumizing place
Reason, and be connected in described vacuumize in tower 8 equipped with gas passage in the tail gas destruction tower, the solution under vacuum state is defeated
It is sent to be similarly in the filtration tank 9 of vacuum state and carries out filtration treatment, the finished product after extraction filtering is transported in finished product kettle 10,
Solution after filtering, which is transported in liquid waste treating apparatus 11, carries out liquid waste processing.
Pass through above-described embodiment, it can be deduced that：A kind of device for preparing the misery thioesters of chloromethane of the utility model uses solid
Phosgene, reaction condition is gentle, easy-to-operate, more stablizes safety using the device of gaseous state or liquid phosgene than tradition, and
And the generation of accessory substance is reduced by excessive organic solvent and tertiary amine catalyst, and product earning rate is improved, it is reasonable to tail gas
Processing, it is environmentally protective.
Although the foregoing describing specific embodiment of the present utility model, it will be appreciated by those of skill in the art that
These are merely illustrative of, and the scope of protection of the utility model is defined by the appended claims.Those skilled in the art
Member can make these embodiments numerous variations or repair on the premise of the principle and essence without departing substantially from the utility model
Change, but these change and modification each fall within the scope of protection of the utility model.
Claims (8)
1. a kind of device for preparing the misery thioesters of chloromethane, including reaction unit, extraction element, it is characterised in that：It is provided with nitrogen
Tank is connected to the reaction unit by gas pipeline, and sets tail gas to destroy tower, the reaction dress outside the reaction unit
Put and the extraction element is connected to by pipeline, the extraction element is connected to the tail gas by gas pipeline and destroys tower, institute
State extraction element discharge end and connect finished product kettle and liquid waste treating apparatus respectively again.
A kind of 2. device for preparing the misery thioesters of chloromethane according to claim 1, it is characterised in that：The reaction unit bag
Include solid phosgene tank, organic solution tank, catalyst tank, spicy thioalcohol tank, reactor, the solid phosgene tank and the organic solution
Tank is connected to mixing tube, and the mixing tube is connected to the reactor feed end, and the catalyst tank and the spicy thioalcohol tank are equal
The reactor feed end is directly connected to by pipeline.
A kind of 3. device for preparing the misery thioesters of chloromethane according to claim 2, it is characterised in that：In the reactor
It is equipped with the mixing tube junction and control valve is added dropwise.
A kind of 4. device for preparing the misery thioesters of chloromethane according to claim 2, it is characterised in that：Set in the reactor
There is agitating device.
A kind of 5. device for preparing the misery thioesters of chloromethane according to claim 2, it is characterised in that：The reactor uses
The intermittent operating type for adding reactant, adds the spicy thioalcohol and phosgene solution of fixed amount every time, and the catalyst tank is total
It is to add excess tertiary amine catalyst into the reactor in advance.
A kind of 6. device for preparing the misery thioesters of chloromethane according to claim 2, it is characterised in that：Outside the reactor
Equipped with temperature control equipment.
A kind of 7. device for preparing the misery thioesters of chloromethane according to claim 1, it is characterised in that：The extraction element bag
Include and vacuumize tower, filtration tank, described vacuumize in tower is equipped with aspiration pump, and connecting the tail gas by gas pipeline destroys tower, institute
State and vacuumize the tower discharge end connection filtration tank feed end, the filtration tank discharge end connects the tail gas and destroys tower respectively again
With the finished product kettle.
A kind of 8. device for preparing the misery thioesters of chloromethane according to claim 1, it is characterised in that：The tail gas destroys tower
It is interior to be equipped with hydrolyst, while sequentially connected water absorption, alkali adsorption tower are provided with outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721320902.9U CN207294649U (en) | 2017-10-13 | 2017-10-13 | A kind of device for preparing the misery thioesters of chloromethane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721320902.9U CN207294649U (en) | 2017-10-13 | 2017-10-13 | A kind of device for preparing the misery thioesters of chloromethane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207294649U true CN207294649U (en) | 2018-05-01 |
Family
ID=62415172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721320902.9U Active CN207294649U (en) | 2017-10-13 | 2017-10-13 | A kind of device for preparing the misery thioesters of chloromethane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207294649U (en) |
-
2017
- 2017-10-13 CN CN201721320902.9U patent/CN207294649U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207042222U (en) | Chlorine dioxide gaseous oxidation denitration integrated device | |
| CN107473931A (en) | The production method of benzyl chloride | |
| CN207294649U (en) | A kind of device for preparing the misery thioesters of chloromethane | |
| CN208927910U (en) | A kind of emission-control equipment of high purity phosphorus pentachloride synthesis | |
| CN105439096B (en) | Environment-friendly type peroxide passivation chlorine dioxide technique prepares the method and apparatus of sodium chlorite | |
| CN207708810U (en) | The recovery system of tail gas in a kind of production of chlorination toluene | |
| CN212357101U (en) | Environment-friendly, safe and efficient N-chloromethyl-N-phenyl amino formyl chloride production system | |
| CN108159860A (en) | A kind of tail gas absorption purifying plant for p-chloro benzo trifluoride-99 synthesis | |
| CN211612176U (en) | Hydrogen chloride tail gas absorbing device of by-product high concentration hydrochloric acid | |
| CN210496442U (en) | 3-cyano-2-hydroxypropyl trimethyl ammonium chloride tubular synthesis device | |
| CN104108686B (en) | Pressure-relief discharge, absorption, treatment and recycling method in production process of thionyl chloride | |
| CN105439091B (en) | The peroxide passivation chlorine dioxide preparation method and equipment of environment-friendly type | |
| CN107019997A (en) | A kind of carbon tetrachloride hydrogen reducing solvent recovery technology from vent gas | |
| CN215102943U (en) | Continuous production system of salicylanitrile | |
| CN215196833U (en) | Furoyl chloride production system | |
| CN113549027B (en) | Continuous production process of 2-chloro-5-chloromethylthiazole | |
| CN205850525U (en) | A kind of for processing the device of tail gas in benzene chloride production | |
| CN205517634U (en) | High -pressure batch autoclave exhaust purification apparatus | |
| CN109231168A (en) | A kind of production of chloroacetic acid reduce hydrochloric acid, in acetic acid by-product sulfuric acid content method and apparatus | |
| CN209362207U (en) | A kind of chlorine dioxide denitrification apparatus | |
| CN106748794A (en) | A kind of two（Trichloromethyl）The synthesizer and method of carbonic ester | |
| CN209771799U (en) | Comprehensive recycling system for PVC (polyvinyl chloride) waste alkali and gas burning kiln waste gas | |
| CN208911798U (en) | A kind of production of chloroacetic acid reduce hydrochloric acid, in acetic acid by-product sulfuric acid content device | |
| CN207694776U (en) | A kind of chlorine dioxide with high purity reactor | |
| CN113041813A (en) | Tail gas processing apparatus is used in phosphane preparation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |