CN105617942B - A kind of feedstock devices and methods therefor of nitromethane synthetic reaction - Google Patents
A kind of feedstock devices and methods therefor of nitromethane synthetic reaction Download PDFInfo
- Publication number
- CN105617942B CN105617942B CN201610191983.0A CN201610191983A CN105617942B CN 105617942 B CN105617942 B CN 105617942B CN 201610191983 A CN201610191983 A CN 201610191983A CN 105617942 B CN105617942 B CN 105617942B
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- China
- Prior art keywords
- natrium nitrosum
- soda ash
- batch mixer
- charger
- charging aperture
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F21/00—Dissolving
- B01F21/02—Methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F21/00—Dissolving
- B01F21/10—Dissolving using driven stirrers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
- C07C201/06—Preparation of nitro compounds
- C07C201/10—Preparation of nitro compounds by substitution of functional groups by nitro groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/2204—Mixing chemical components in generals in order to improve chemical treatment or reactions, independently from the specific application
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2204/00—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices
- B01J2204/002—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices the feeding side being of particular interest
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Processing Of Solid Wastes (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The present invention relates to chemical field, particularly discloses a kind of feedstock devices and methods therefor of nitromethane synthetic reaction.The feedstock device of the nitromethane synthetic reaction, including natrium nitrosum pulverizer, natrium nitrosum elevator, natrium nitrosum pans, natrium nitrosum charger, soda ash surge tank, soda ash charger, batch mixer and dimethyl suflfate surge tank.The feedstock devices and methods therefor of the nitromethane synthetic reaction, natrium nitrosum carries out being dissolved in water after batch mixer mixes with soda ash after crushing, natrium nitrosum is set to be dissolved with soda ash in water fully, solves the problems, such as feedstock inequality during conventional feeds, make reaction more steady, and after natrium nitrosum is changed to feeding-in solid body, it is not necessary to by pump and pipeline, solve the problems, such as line clogging.Meanwhile also no longer need to set the valve of two natrium nitrosum preparing tanks and two natrium nitrosum preparing tanks of alternation switch again during production, not only make fill process more continuous, also reduce labor intensity.
Description
Technical field
The present invention relates to chemical field, the feedstock device of more particularly to a kind of nitromethane synthetic reaction and its side
Method.
Background technology
, it is necessary to by natrium nitrosum and sulfuric acid two in the production technology of dimethyl suflfate nitroso method of substitution production nitromethane
Methyl esters adds reactor, and substitution reaction generation nitromethane occurs in reactor for two kinds of reactants.In traditional handicraft, preparing
, it is necessary to add a certain amount of process water in natrium nitrosum preparing tank during sodium nitrite solution, then start stirring and dispensing is followed
Ring pump, then natrium nitrosum and soda ash are added in natrium nitrosum preparing tank from natrium nitrosum preparing tank dog-house, make natrium nitrosum
Be dissolved in soda ash in process water and be configured to solution, the solution prepared by pump by certain flow rate be continuously supplied to reactor with
Dimethyl suflfate is reacted.And, it is necessary to set two natrium nitrosum preparing tanks to be used alternatingly when producing.It is this traditional
There is natrium nitrosum and dissolved with soda ash in process water the problem of insufficient in feedstock method, and natrium nitrosum dissolves with soda ash
It is insufficient pipeline not only to be resulted in blockage, need alternation switch two when can also cause reaction-ure feeding uneven, and produce
The valve of individual natrium nitrosum preparing tank, adds labor intensity.
The content of the invention
The present invention is in order to make up the deficiencies in the prior art, there is provided a kind of reasonable in design, reactant uniform feeding, avoids pump
And line clogging, reduce labor intensity nitromethane synthetic reaction feedstock devices and methods therefor, solve existing skill
Problem present in art.
The present invention is achieved through the following technical solutions：
A kind of feedstock device of nitromethane synthetic reaction, including natrium nitrosum pulverizer, natrium nitrosum elevator,
Natrium nitrosum pans, natrium nitrosum charger, soda ash surge tank, soda ash charger, batch mixer and dimethyl suflfate buffering
Tank, the discharging opening of the natrium nitrosum pulverizer are connected by pipeline with the charging aperture of natrium nitrosum elevator, natrium nitrosum
The discharging opening of elevator is connected by pipeline with the charging aperture of natrium nitrosum pans, and the discharging opening of natrium nitrosum pans leads to
Piping is connected with the charging aperture of natrium nitrosum charger, and the discharging opening of natrium nitrosum charger by pipeline and is located at batch mixing
The batch mixer first charging aperture of machine side is connected, and the discharging opening of soda ash surge tank passes through pipeline and the charging aperture of soda ash charger
It is connected, the discharging opening of soda ash charger is connected by pipeline with the batch mixer second charging aperture located at batch mixer opposite side,
A batch mixer water inlet is provided with the top of batch mixer, the discharging opening of batch mixer is by pipeline and located at the side roof part of reactor one
Natrium nitrosum charging aperture is connected, and the discharging opening of dimethyl suflfate surge tank passes through pipeline and the sulphur located at the side roof part of reactor one
Dimethyl phthalate charging aperture is connected.
Using the feed process of the feedstock device of the nitromethane synthetic reaction, using following steps：
(1) it is 10-20 mesh to put into solid sodium nitrite and be crushed to fineness in pulverizer；
(2) natrium nitrosum after the crushing for obtaining step (1) is delivered in natrium nitrosum pans；
(3) process water is delivered to batch mixer and after batch mixer starts stirring with 190-570kg/h flow velocitys, by step
(2) natrium nitrosum in Sodium Nitrite pans by charger with 290-870kg/h flow velocitys, soda ash surge tank will be stored in
In soda ash by charger with 15-45kg/h flow velocitys simultaneously be delivered to batch mixer, make natrium nitrosum and soda ash in batch mixer
It is substantially dissolved in process water, obtains the aqueous solution of natrium nitrosum and soda ash；
(4) aqueous solution of the natrium nitrosum continuously mixed in step (3) and soda ash is passed through with 495-1485kg/h flow velocitys
While natrium nitrosum charging aperture on reactor enters reactor, make dimethyl suflfate in dimethyl suflfate surge tank with
280-840kg/h flow velocitys enter reactor by dimethyl suflfate charging aperture, make natrium nitrosum with dimethyl suflfate in reactor
In react generation nitromethane.
The beneficial effects of the invention are as follows：The feedstock devices and methods therefor of the nitromethane synthetic reaction, natrium nitrosum
Carry out being dissolved in water after batch mixer mixes with soda ash after crushing, natrium nitrosum is dissolved with soda ash in water fully, solve biography
In fill process of uniting the problem of feedstock inequality, make reaction more steady, and after natrium nitrosum is changed to feeding-in solid body, be not required to
To solve the problems, such as line clogging by pump and pipeline, avoid overhaul of the equipments or maintenance.Meanwhile during production also not
Need to set the valve of two natrium nitrosum preparing tanks and two natrium nitrosum preparing tanks of alternation switch again again, not only make to feed
Cheng Gengjia is continuous, also reduces labor intensity.
Brief description of the drawings
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the present invention.
In figure, 1, natrium nitrosum pulverizer, 2, natrium nitrosum elevator, 3, natrium nitrosum pans, 4, natrium nitrosum enters
Material machine, 5, soda ash surge tank, 6, soda ash charger, 7, batch mixer, 8, dimethyl suflfate surge tank, 9, batch mixer first feeds
Mouthful, 10, batch mixer second charging aperture, 11, batch mixer water inlet, 12, reactor, 13, natrium nitrosum charging aperture, 14, sulfuric acid two
Methyl esters charging aperture.
Embodiment
For the technical characterstic for illustrating this programme can be understood, below by embodiment, and its accompanying drawing is combined, to this hair
It is bright to be described in detail.
As shown in fig. 1, the embodiment includes natrium nitrosum pulverizer 1, natrium nitrosum elevator 2, among natrium nitrosum
Tank 3, natrium nitrosum charger 4, soda ash surge tank 5, soda ash charger 6, batch mixer 7 and dimethyl suflfate surge tank 8, it is described
The discharging opening of natrium nitrosum pulverizer 1 is connected by pipeline with the charging aperture of natrium nitrosum elevator 2, natrium nitrosum elevator
2 discharging opening is connected by pipeline with the charging aperture of natrium nitrosum pans 3, and the discharging opening of natrium nitrosum pans 3 passes through
Pipeline is connected with the charging aperture of natrium nitrosum charger 4, and the discharging opening of natrium nitrosum charger 4 by pipeline and is located at batch mixing
The batch mixer first charging aperture 9 of the side of machine 7 is connected, and the discharging opening of soda ash surge tank 5 is entered by pipeline and soda ash charger 6
Material mouth is connected, and the discharging opening of soda ash charger 6 passes through pipeline and the batch mixer second charging aperture 10 located at the opposite side of batch mixer 7
It is connected, a batch mixer water inlet 11 is provided with the top of batch mixer 7, the discharging opening of batch mixer 7 is reacted by pipeline with being located at
The natrium nitrosum charging aperture 13 of the side roof part of device 12 1 is connected, and the discharging opening of dimethyl suflfate surge tank 8 is by pipeline with being located at
The dimethyl suflfate charging aperture 14 of the side roof part of reactor 11 1 is connected.
Using the feed process of the feedstock device of the nitromethane synthetic reaction, using following steps：
(1) it is 10-20 mesh to put into solid sodium nitrite and be crushed to fineness in natrium nitrosum pulverizer 1；
(2) natrium nitrosum after the crushing for obtaining step (1) is delivered in natrium nitrosum by natrium nitrosum elevator 2
Between in tank 3；
(3) process water is delivered to batch mixer 7 and after batch mixer 7 starts stirring with 190-570kg/h flow velocitys, by step
(2) natrium nitrosum in Sodium Nitrite pans 3 by natrium nitrosum charger 4 with 290-870kg/h flow velocitys, will be stored in
Soda ash in soda ash surge tank 5 is delivered to batch mixer 7 simultaneously by soda ash charger 6 with 15-45kg/h flow velocitys, makes natrium nitrosum
It is substantially dissolved in soda ash in batch mixer in process water, obtains the aqueous solution of natrium nitrosum and soda ash；
(4) aqueous solution of the natrium nitrosum continuously mixed in step (3) batch mixer 7 and soda ash is flowed with 495-1485kg/h
While speed enters reactor 12 by the natrium nitrosum charging aperture 13 on reactor 12, make in dimethyl suflfate surge tank 8
Dimethyl suflfate enters reactor 12 with 280-840kg/h flow velocitys by dimethyl suflfate charging aperture 14, makes natrium nitrosum and sulphur
Dimethyl phthalate reacts in reactor 12 generates nitromethane, ensures that reactant is persistently fed in course of reaction.
The feedstock device of nitromethane synthetic reaction of the present invention, natrium nitrosum carry out batch mixer after crushing and mixed with soda ash
It is dissolved in water after conjunction, natrium nitrosum is dissolved with soda ash in water fully, feedstock is uneven during solving conventional feeds
The problem of, make reaction more steady, and after natrium nitrosum is changed to feeding-in solid body, it is not necessary to pass through pump and pipeline, solve
The problem of line clogging, avoid overhaul of the equipments or maintenance.Meanwhile also no longer need to set two natrium nitrosums again during production
The valve of preparing tank and two natrium nitrosum preparing tanks of alternation switch, not only makes fill process more continuous, also reduces work
Intensity.
Part is not described in detail by the present invention, is the known technology of those skilled in the art of the present technique.Finally illustrate, the above is real
Example is applied to be merely illustrative of the technical solution of the present invention and unrestricted, although having been carried out specifically to the present invention with reference to preferred embodiment
It is bright, it will be understood by those within the art that, technical scheme can be modified or equivalent substitution, and
The objective and scope of technical solution of the present invention are not departed from, it all should cover among scope of the presently claimed invention.
Claims (2)
1. a kind of feedstock device of nitromethane synthetic reaction, it is characterized in that：Including natrium nitrosum pulverizer, natrium nitrosum
Elevator, natrium nitrosum pans, natrium nitrosum charger, soda ash surge tank, soda ash charger, batch mixer and dimethyl sulfate
Ester surge tank, the discharging opening of the natrium nitrosum pulverizer are connected by pipeline with the charging aperture of natrium nitrosum elevator, sub-
The discharging opening of sodium nitrate elevator is connected by pipeline with the charging aperture of natrium nitrosum pans, and natrium nitrosum pans go out
Material mouth is connected by pipeline with the charging aperture of natrium nitrosum charger, and the discharging opening of natrium nitrosum charger is by pipeline with setting
Batch mixer first charging aperture in batch mixer side is connected, and the discharging opening of soda ash surge tank passes through pipeline and soda ash charger
Charging aperture is connected, and the discharging opening of soda ash charger passes through pipeline and the batch mixer second charging aperture phase located at batch mixer opposite side
Connection, a batch mixer water inlet is provided with the top of batch mixer, and the discharging opening of batch mixer by pipeline and is located at reactor side
The natrium nitrosum charging aperture at top is connected, and the discharging opening of dimethyl suflfate surge tank is pushed up by pipeline with being located at reactor side
The dimethyl suflfate charging aperture in portion is connected.
2. a kind of usage right requires the feed process of the feedstock device of the 1 nitromethane synthetic reaction, it is characterized in that：
Comprise the following steps：
(1) it is 10-20 mesh to put into solid sodium nitrite and be crushed to fineness in pulverizer；
(2) natrium nitrosum after the crushing for obtaining step (1) is delivered in natrium nitrosum pans；
(3) process water is delivered to batch mixer and after batch mixer starts stirring with 190-570kg/h flow velocitys, by step (2)
Natrium nitrosum in natrium nitrosum pans by charger with 290-870kg/h flow velocitys, will be stored in soda ash surge tank
Soda ash is delivered to batch mixer simultaneously by charger with 15-45kg/h flow velocitys, makes natrium nitrosum and soda ash abundant in batch mixer
It is dissolved in process water, obtains the aqueous solution of natrium nitrosum and soda ash；
(4) aqueous solution of the natrium nitrosum continuously mixed in step (3) and soda ash is passed through into reaction with 495-1485kg/h flow velocitys
While natrium nitrosum charging aperture on device enters reactor, make the dimethyl suflfate in dimethyl suflfate surge tank with 280-
840kg/h flow velocitys enter reactor by dimethyl suflfate charging aperture, natrium nitrosum is sent out in the reactor with dimethyl suflfate
Raw reaction generation nitromethane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610191983.0A CN105617942B (en) | 2016-03-30 | 2016-03-30 | A kind of feedstock devices and methods therefor of nitromethane synthetic reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610191983.0A CN105617942B (en) | 2016-03-30 | 2016-03-30 | A kind of feedstock devices and methods therefor of nitromethane synthetic reaction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105617942A CN105617942A (en) | 2016-06-01 |
| CN105617942B true CN105617942B (en) | 2018-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610191983.0A Active CN105617942B (en) | 2016-03-30 | 2016-03-30 | A kind of feedstock devices and methods therefor of nitromethane synthetic reaction |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB949983A (en) * | 1961-03-13 | 1964-02-19 | Aerojet General Co | Method for the preparation of gem-dinitro compounds |
| CN202207551U (en) * | 2011-07-21 | 2012-05-02 | 上海联业农业科技有限公司 | Mixed powder material production line |
| CN204469655U (en) * | 2014-09-30 | 2015-07-15 | 玉门市康地牧业有限公司 | Feed mixing and blending machine |
| CN204768424U (en) * | 2015-07-12 | 2015-11-18 | 宿州市笑果饲料科技有限责任公司 | Feed mixer |
| CN105170010A (en) * | 2015-08-21 | 2015-12-23 | 柴标 | Feed system for plastic partition board production |
| CN205473484U (en) * | 2016-03-30 | 2016-08-17 | 临沂远博化工有限公司 | Raw material feed device of nitromethane building -up reactions |
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2016
- 2016-03-30 CN CN201610191983.0A patent/CN105617942B/en active Active
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| CN105617942A (en) | 2016-06-01 |
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