CN203728742U - Equipment for preparing chloropivaloyl pentane - Google Patents
Equipment for preparing chloropivaloyl pentane Download PDFInfo
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- CN203728742U CN203728742U CN201420112488.2U CN201420112488U CN203728742U CN 203728742 U CN203728742 U CN 203728742U CN 201420112488 U CN201420112488 U CN 201420112488U CN 203728742 U CN203728742 U CN 203728742U
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Abstract
The utility model discloses equipment for preparing chloropivaloyl pentane. The equipment comprises a reaction kettle, a falling-film tower connected with the reaction kettle, and a hydrochloric acid absorption tower connected with the falling-film tower, and is characterized by further comprising automatic feed hoppers connected with the reaction kettle, flow meters are arranged on the automatic feed hoppers, metering pumps are arranged on an isoamylene feed pipeline and a hydrogen chloride gas feed pipeline of the falling-film tower, a first thermometer is arranged at the bottom of the falling-film tower, a second thermometer is arranged in the position which has the same height with a spray header, and a filler is arranged inside the falling-film tower. The equipment disclosed by the utility model has the benefits as follows: no spraying dead corners exist because an addition process of hydrogen chloride gas and isoamylene adopts the falling-film tower to spray to effectively solve the problem of insufficient contact of reactants; the equipment is capable of continuously using the excessive hydrogen chloride gas after being absorbed by the hydrochloric acid absorption tower in a hydrolysis reaction of phosphorus trichloride to realize complete recycling, avoid waste and further reduce the environmental pressure.
Description
Technical field
The utility model relates to a kind of equipment for the preparation of chlorinated special pentane, belongs to technical field of chemical.
Background technology
Pinacolone, mainly for the production of triazole pesticide, also for the production of weedicide and pharmaceutical prod, is one of important industrial chemicals.In the preparation technology of pinacolone, chlorinated special pentane is again very important intermediate.
In the existing technique of preparing chlorinated special pentane, conventionally adopt hydrochloric acid additive process, that is: quantitative isopentene under 5 ± 2 ℃ of conditions with excessive hydrochloric acid reaction, hydrochloric acid time for adding, at 2.5-3h, also needs to be incubated 2h after being added dropwise to complete conventionally.Because the add-on of this technique hydrochloric acid is too large, produce a large amount of spent acid and cause aftertreatment more difficult, and production efficiency is not high, impurity is more, product relative content is lower, so need to transform the technology of preparing of chlorinated special pentane.At application number, be: in 201210009392.9 Chinese patent, by coproduction phosphorous acid, use byproduct hydrogen chloride gas and the isopentene of phosphorous acid to carry out addition, thereby reduced the add-on of hydrochloric acid and the quantity discharged of waste water, the relative content of production efficiency and product also increases.But in actual production, the process heat release of phosphorus trichloride hydrolysis generation phosphorous acid is too fast, hydrogen chloride gas burst size is unstable, not only there is certain potential safety hazard, and the addition reaction meeting of follow-up hydrogen chloride gas and isopentene is produced to certain impact, thereby affected content and the productive rate of chlorinated special pentane, so also need above-mentioned technique to improve.
Utility model content
The purpose of this utility model is to provide a kind of equipment for the preparation of chlorinated special pentane that is applicable to improve rear technique.
In order to realize above-mentioned target, the utility model adopts following technical scheme:
A kind of equipment for the preparation of chlorinated special pentane, comprise: reactor, the falling-film tower being connected with reactor, the hydrochloric acid absorption tower being connected with falling-film tower, it is characterized in that, also comprise: the self-feeding bucket being connected with reactor, is provided with under meter on aforementioned self-feeding bucket.
The aforesaid equipment for the preparation of chlorinated special pentane, is characterized in that, on the isoamylene feed pipeline of falling-film tower, be provided with volume pump on hydrogen chloride gas feed pipe.
The aforesaid equipment for the preparation of chlorinated special pentane, is characterized in that, the bottom of falling-film tower is provided with the first thermometer, and the position contour with spray header is provided with the second thermometer.
The aforesaid equipment for the preparation of chlorinated special pentane, is characterized in that, the inside of falling-film tower is provided with filler.
Usefulness of the present utility model is: the addition process of hydrogen chloride gas and isopentene adopts falling-film tower spray, and spray, without dead angle, efficiently solves reactant and contacts inadequate problem; Excessive hydrogen chloride gas also can continue on for, in the hydrolysis reaction of phosphorus trichloride, having accomplished to recycle completely after hydrochloric acid absorption tower absorbs, and neither waste, has alleviated again environmental stress.
Accompanying drawing explanation
Fig. 1 is the composition schematic diagram of the equipment for the preparation of chlorinated special pentane of the present utility model.
The implication of Reference numeral in figure: 1-reactor, 2-falling-film tower, 3-hydrochloric acid absorption tower, 4-self-feeding bucket, 5-under meter, 6-volume pump, 7-the first thermometer, 8-the second thermometer, 9-spray header, 10-hydrogen chloride gas recovery channel, 11-hydrogenchloride liquids recovery pipeline, arrow represents the flow direction of hydrogenchloride.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is done to concrete introduction.
With reference to Fig. 1, the equipment for the preparation of chlorinated special pentane of the present utility model comprises: reactor 1, the falling-film tower 2 being connected with reactor 1 and self-feeding bucket 4 and the hydrochloric acid absorption tower 3 being connected with falling-film tower 2.
Concrete, self-feeding bucket 4 is connected with the top of reactor 1, for automatically adding reactant to reactor 1, is provided with the under meter 5 for metered reagent flow on it; The top of reactor 1 is provided with gas output tube road, and this gas output tube road is communicated with the hydrogen chloride gas feed pipe of falling-film tower 2, and hydrogen chloride gas feed pipe is arranged on the bottom of falling-film tower 2, and the top of falling-film tower 2 is provided with isoamylene feed pipeline; The top of falling-film tower 2 is also provided with hydrogen chloride gas recovery channel 10, and this pipeline is communicated with hydrochloric acid absorption tower 3; The bottom of hydrochloric acid absorption tower 3 is provided with hydrogenchloride liquids recovery pipeline 11, and this pipeline is communicated with hydrochloric acid self-feeding bucket 4, thereby has realized the recycle of hydrochloric acid, has both effectively alleviated environmental stress, and the cost of saving again drops into, economic benefits.
As a kind of preferred scheme, on the isoamylene feed pipeline of falling-film tower 2, be provided with volume pump 6 on hydrogen chloride gas feed pipe.
More preferably, the bottom of falling-film tower 2 is provided with the first thermometer 7, for monitoring the temperature of falling-film tower 2 bottoms; The position contour with spray header 9 is provided with the second thermometer 8, the temperature when monitoring liquid, gas contact reacts.
In order to guarantee the interior liquid of falling-film tower 2, gas mixes and contact completely, as a kind of preferred scheme, the inside of falling-film tower 2 is provided with filler (not shown), the height of filler is preferably 0.8 times of falling-film tower 2 height.
It should be noted that, temperature control system adopts the setting of this area routine, not shown, does not also repeat.
It should be noted that, above-described embodiment does not limit the utility model in any form, and all employings are equal to replaces or technical scheme that the mode of equivalent transformation obtains, all drops in protection domain of the present utility model.
Claims (4)
1. the equipment for the preparation of chlorinated special pentane, comprise: reactor, the falling-film tower being connected with reactor, the hydrochloric acid absorption tower being connected with falling-film tower, it is characterized in that, also comprise: the self-feeding bucket being connected with reactor, is provided with under meter on described self-feeding bucket.
2. the equipment for the preparation of chlorinated special pentane according to claim 1, is characterized in that, on the isoamylene feed pipeline of falling-film tower, be provided with volume pump on hydrogen chloride gas feed pipe.
3. the equipment for the preparation of chlorinated special pentane according to claim 2, is characterized in that, the bottom of falling-film tower is provided with the first thermometer, and the position contour with spray header is provided with the second thermometer.
4. according to the equipment for the preparation of chlorinated special pentane described in claim 1,2 or 3, it is characterized in that, the inside of falling-film tower is provided with filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420112488.2U CN203728742U (en) | 2014-03-13 | 2014-03-13 | Equipment for preparing chloropivaloyl pentane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420112488.2U CN203728742U (en) | 2014-03-13 | 2014-03-13 | Equipment for preparing chloropivaloyl pentane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203728742U true CN203728742U (en) | 2014-07-23 |
Family
ID=51198828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420112488.2U Expired - Fee Related CN203728742U (en) | 2014-03-13 | 2014-03-13 | Equipment for preparing chloropivaloyl pentane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203728742U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103864568A (en) * | 2014-03-13 | 2014-06-18 | 张家港市振方化工有限公司 | Process and equipment for preparing chloropentane |
| CN106467457A (en) * | 2016-08-30 | 2017-03-01 | 淄博益利化工新材料有限公司 | A kind of continuous method producing 5 chlorine 2 pentanone |
-
2014
- 2014-03-13 CN CN201420112488.2U patent/CN203728742U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103864568A (en) * | 2014-03-13 | 2014-06-18 | 张家港市振方化工有限公司 | Process and equipment for preparing chloropentane |
| CN106467457A (en) * | 2016-08-30 | 2017-03-01 | 淄博益利化工新材料有限公司 | A kind of continuous method producing 5 chlorine 2 pentanone |
| CN106467457B (en) * | 2016-08-30 | 2020-10-27 | 淄博齐塑环保科技有限公司 | Method for continuously producing 5-chloro-2-pentanone |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20140723 Termination date: 20190313 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |