CN105617942A - Raw material feeding device for nitromethane synthesis reaction and method of raw material feeding device - Google Patents
Raw material feeding device for nitromethane synthesis reaction and method of raw material feeding device Download PDFInfo
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- CN105617942A CN105617942A CN201610191983.0A CN201610191983A CN105617942A CN 105617942 A CN105617942 A CN 105617942A CN 201610191983 A CN201610191983 A CN 201610191983A CN 105617942 A CN105617942 A CN 105617942A
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- sodium nitrite
- mixer
- feed
- soda ash
- opening
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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
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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
- B01F21/10—Dissolving using driven stirrers
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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
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
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- 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
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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
- 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
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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
- 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 invention relates to the field of chemical engineering, and in particular discloses a raw material feeding device for nitromethane synthesis reaction and a method of raw material feeding device. The raw material feeding device for nitromethane synthesis reaction comprises a sodium nitrite crushing machine, a sodium nitrite lifting machine, a sodium nitrite tundish, a sodium nitrite feeding machine, a sodium carbonate buffer tank, a sodium carbonate feeding machine, a mixing machine and a dimethyl sulfate buffer tank. According to the raw material feeding device for nitromethane synthesis reaction and the method of the raw material feeding device, after being crushed, sodium nitrite is mixed with sodium carbonate in the mixing machine and is dissolved with water, so that sodium nitrite and sodium carbonate can be sufficiently dissolved in water, the problem that raw materials are not uniformly fed in the conventional feeding process is solved, and the reaction can be relatively stable; moreover, as solid sodium nitrite can be fed without a pump or a pipeline, the problem of pipeline blocking can be solved; meanwhile the situation that two sodium nitrite preparation tanks are used and valves of the two sodium nitrite preparation tanks are alternatively opened and closed in production is avoided, so that not only is the feeding process relatively continuous, but also the working intensity is relieved.
Description
Technical field
The present invention relates to chemical field, in particular to feedstock device and the method thereof of a kind of Nitromethane 99Min. building-up reactions.
Background technology
Methyl-sulfate nitroso-group method of substitution is produced in the production technique of Nitromethane 99Min., it is necessary to Sodium Nitrite and methyl-sulfate are added reactor, and two kinds of reactants occur substitution reaction to generate Nitromethane 99Min. in reactor. In traditional technology, when preparing sodium nitrite solution, need in Sodium Nitrite preparing tank, add a certain amount of process water, then start and stir and batching recycle pump, again Sodium Nitrite and soda ash are added Sodium Nitrite preparing tank from Sodium Nitrite preparing tank dog-house, making Sodium Nitrite and soda ash be dissolved in process water and be mixed with solution, the solution prepared continues by certain flow rate by pump to be transported to reactor and methyl-sulfate reacts. And when producing, it is necessary to two Sodium Nitrite preparing tanks are set to be used alternatingly. This kind of traditional feedstock method there is Sodium Nitrite and soda ash dissolves insufficient problem in process water, and Sodium Nitrite and soda ash dissolve and insufficient not only can be resulted in blockage by pipeline, reaction-ure feeding also can be caused uneven, and need the valve of alternately switch two Sodium Nitrite preparing tanks when producing, add labour intensity.
Summary of the invention
The present invention is in order to make up the deficiencies in the prior art, provide a kind of reasonable in design, reactant uniform feeding, avoid pump and line clogging, the feedstock device of the Nitromethane 99Min. building-up reactions of reduction labour intensity and method thereof, solve problems of the prior art.
The present invention is achieved through the following technical solutions:
The feedstock device of a kind of Nitromethane 99Min. building-up reactions, comprise Sodium Nitrite pulverizer, Sodium Nitrite lift, Sodium Nitrite tundish, Sodium Nitrite charger, soda ash surge tank, soda ash charger, mixer and methyl-sulfate surge tank, the discharge port of described Sodium Nitrite pulverizer is connected by the opening for feed of pipeline with Sodium Nitrite lift, the discharge port of Sodium Nitrite lift is connected by the opening for feed of pipeline with Sodium Nitrite tundish, the discharge port of Sodium Nitrite tundish is connected by the opening for feed of pipeline with Sodium Nitrite charger, the discharge port of Sodium Nitrite charger is connected with mixer first opening for feed being located at mixer side by pipeline, the discharge port of soda ash surge tank is connected by the opening for feed of pipeline with soda ash charger, the discharge port of soda ash charger is connected with mixer the 2nd opening for feed being located at another side of mixer by pipeline, a mixer water-in it is provided with at the top of mixer, the discharge port of mixer is connected with the Sodium Nitrite opening for feed being located at reactor one side roof part by pipeline, the discharge port of methyl-sulfate surge tank is connected with the methyl-sulfate opening for feed being located at reactor one side roof part by pipeline.
Use the feed process of the feedstock device of this Nitromethane 99Min. building-up reactions, adopt following steps:
(1) solid sodium nitrite is dropped into that to be crushed to fineness in pulverizer be 10-20 order;
(2) Sodium Nitrite after pulverizing step (1) obtained is delivered in Sodium Nitrite tundish;
(3) process water is delivered to mixer with 190-570kg/h flow velocity and mixer start stir after, by the Sodium Nitrite in Sodium Nitrite tundish in step (2) by charger with 290-870kg/h flow velocity, the soda ash being stored in soda ash surge tank is delivered to mixer by charger with 15-45kg/h flow velocity simultaneously, Sodium Nitrite and soda ash are fully dissolved in process water in mixer, obtain the aqueous solution of Sodium Nitrite and soda ash;
(4) while the aqueous solution of the Sodium Nitrite mixed continuously in step (3) and soda ash being entered reactor with 495-1485kg/h flow velocity by the Sodium Nitrite opening for feed on reactor, make the methyl-sulfate in methyl-sulfate surge tank enter reactor with 280-840kg/h flow velocity by methyl-sulfate opening for feed, make Sodium Nitrite and methyl-sulfate occur reaction to generate Nitromethane 99Min. in the reactor.
The invention has the beneficial effects as follows: the feedstock device of this Nitromethane 99Min. building-up reactions and method thereof, Sodium Nitrite carries out being dissolved in water after mixer mixes with soda ash after pulverizing, Sodium Nitrite and soda ash is made to dissolve fully in water, solve the problem of feedstock inequality in conventional feeds process, make reaction more steady, and after Sodium Nitrite changes feeding-in solid body into, it is not necessary to by pump and Cemented filling, solve the problem of line clogging, avoid overhaul of the equipments or maintenance. Meanwhile, also no longer need to arrange again two Sodium Nitrite preparing tanks during production and replace the valve of switch two Sodium Nitrite preparing tanks, not only make fill process more continuous, also reduce labour intensity.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Fig. 1 is the structural representation of the present invention.
In figure, 1, Sodium Nitrite pulverizer, 2, Sodium Nitrite lift, 3, Sodium Nitrite tundish, 4, Sodium Nitrite charger, 5, soda ash surge tank, 6, soda ash charger, 7, mixer, 8, methyl-sulfate surge tank, 9, mixer first opening for feed, 10, mixer the 2nd opening for feed, 11, mixer water-in, 12, reactor, 13, Sodium Nitrite opening for feed, 14, methyl-sulfate opening for feed.
Embodiment
For clearly demonstrating the technology feature of this scheme, below by embodiment, and in conjunction with its accompanying drawing, the present invention will be described in detail.
As shown in fig. 1, this embodiment comprises Sodium Nitrite pulverizer 1, Sodium Nitrite lift 2, Sodium Nitrite tundish 3, Sodium Nitrite charger 4, soda ash surge tank 5, soda ash charger 6, mixer 7 and methyl-sulfate surge tank 8, the discharge port of described Sodium Nitrite pulverizer 1 is connected by the opening for feed of pipeline with Sodium Nitrite lift 2, the discharge port of Sodium Nitrite lift 2 is connected by the opening for feed of pipeline with Sodium Nitrite tundish 3, the discharge port of Sodium Nitrite tundish 3 is connected by the opening for feed of pipeline with Sodium Nitrite charger 4, the discharge port of Sodium Nitrite charger 4 is connected with mixer first opening for feed 9 being located at mixer 7 side by pipeline, the discharge port of soda ash surge tank 5 is connected by the opening for feed of pipeline with soda ash charger 6, the discharge port of soda ash charger 6 is connected with mixer the 2nd opening for feed 10 being located at another side of mixer 7 by pipeline, a mixer water-in 11 it is provided with at the top of mixer 7, the discharge port of mixer 7 is connected with the Sodium Nitrite opening for feed 13 being located at reactor 12 1 side roof part by pipeline, the discharge port of methyl-sulfate surge tank 8 is connected with the methyl-sulfate opening for feed 14 being located at reactor 11 1 side roof part by pipeline.
Use the feed process of the feedstock device of this Nitromethane 99Min. building-up reactions, adopt following steps:
(1) solid sodium nitrite is dropped in Sodium Nitrite pulverizer 1 to be crushed to fineness be 10-20 order;
(2) Sodium Nitrite after pulverizing step (1) obtained is delivered in Sodium Nitrite tundish 3 by Sodium Nitrite lift 2;
(3) process water is delivered to mixer 7 with 190-570kg/h flow velocity and after mixer 7 starts stirring, by the Sodium Nitrite in Sodium Nitrite tundish 3 in step (2) by Sodium Nitrite charger 4 with 290-870kg/h flow velocity, the soda ash being stored in soda ash surge tank 5 is delivered to mixer 7 by soda ash charger 6 with 15-45kg/h flow velocity simultaneously, Sodium Nitrite and soda ash are fully dissolved in process water in mixer, obtain the aqueous solution of Sodium Nitrite and soda ash;
(4) while the aqueous solution of the Sodium Nitrite mixed continuously in step (3) mixer 7 and soda ash being entered reactor 12 with 495-1485kg/h flow velocity by the Sodium Nitrite opening for feed 13 on reactor 12, the methyl-sulfate in methyl-sulfate surge tank 8 is made to enter reactor 12 with 280-840kg/h flow velocity by methyl-sulfate opening for feed 14, make Sodium Nitrite and methyl-sulfate occur reaction to generate Nitromethane 99Min. in reactor 12, reaction process being guaranteed, reactant continues charging.
The feedstock device of Nitromethane 99Min. building-up reactions of the present invention, Sodium Nitrite carries out being dissolved in water after mixer mixes with soda ash after pulverizing, Sodium Nitrite and soda ash is made to dissolve fully in water, solve the problem of feedstock inequality in conventional feeds process, make reaction more steady, and after Sodium Nitrite changes feeding-in solid body into, it is not necessary to by pump and Cemented filling, solve the problem of line clogging, avoid overhaul of the equipments or maintenance. Meanwhile, also no longer need to arrange again two Sodium Nitrite preparing tanks during production and replace the valve of switch two Sodium Nitrite preparing tanks, not only make fill process more continuous, also reduce labour intensity.
The present invention does not describe part in detail, is the known technology of those skilled in the art of the present technique. What finally illustrate is, above embodiment is only in order to illustrate the technical scheme of the present invention and unrestricted, although with reference to better embodiment to invention has been detailed explanation, it will be understood by those within the art that, the technical scheme of the present invention can be modified or equivalent replacement, and not departing from objective and the scope of technical solution of the present invention, it all should be encompassed in the middle of the right of the present invention.
Claims (2)
1. the feedstock device of a Nitromethane 99Min. building-up reactions, it is characterized in that: comprise Sodium Nitrite pulverizer, Sodium Nitrite lift, Sodium Nitrite tundish, Sodium Nitrite charger, soda ash surge tank, soda ash charger, mixer and methyl-sulfate surge tank, the discharge port of described Sodium Nitrite pulverizer is connected by the opening for feed of pipeline with Sodium Nitrite lift, the discharge port of Sodium Nitrite lift is connected by the opening for feed of pipeline with Sodium Nitrite tundish, the discharge port of Sodium Nitrite tundish is connected by the opening for feed of pipeline with Sodium Nitrite charger, the discharge port of Sodium Nitrite charger is connected with mixer first opening for feed being located at mixer side by pipeline, the discharge port of soda ash surge tank is connected by the opening for feed of pipeline with soda ash charger, the discharge port of soda ash charger is connected with mixer the 2nd opening for feed being located at another side of mixer by pipeline, a mixer water-in it is provided with at the top of mixer, the discharge port of mixer is connected with the Sodium Nitrite opening for feed being located at reactor one side roof part by pipeline, the discharge port of methyl-sulfate surge tank is connected with the methyl-sulfate opening for feed being located at reactor one side roof part by pipeline.
2. use a feed process for the feedstock device of Nitromethane 99Min. building-up reactions described in claim 1, it is characterized in that: comprise the steps:
(1) solid sodium nitrite is dropped into that to be crushed to fineness in pulverizer be 10-20 order;
(2) Sodium Nitrite after pulverizing step (1) obtained is delivered in Sodium Nitrite tundish;
(3) process water is delivered to mixer with 190-570kg/h flow velocity and mixer start stir after, by the Sodium Nitrite in Sodium Nitrite tundish in step (2) by charger with 290-870kg/h flow velocity, the soda ash being stored in soda ash surge tank is delivered to mixer by charger with 15-45kg/h flow velocity simultaneously, Sodium Nitrite and soda ash are fully dissolved in process water in mixer, obtain the aqueous solution of Sodium Nitrite and soda ash;
(4) while the aqueous solution of the Sodium Nitrite mixed continuously in step (3) and soda ash being entered reactor with 495-1485kg/h flow velocity by the Sodium Nitrite opening for feed on reactor, make the methyl-sulfate in methyl-sulfate surge tank enter reactor with 280-840kg/h flow velocity by methyl-sulfate opening for feed, make Sodium Nitrite and methyl-sulfate occur reaction to generate Nitromethane 99Min. in the reactor.
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 |
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| Publication Number | Publication Date |
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| CN105617942A true CN105617942A (en) | 2016-06-01 |
| CN105617942B CN105617942B (en) | 2018-01-12 |
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Citations (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 |
-
2016
- 2016-03-30 CN CN201610191983.0A patent/CN105617942B/en active Active
Patent Citations (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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| Publication number | Publication date |
|---|---|
| CN105617942B (en) | 2018-01-12 |
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