CN105013206A - Melted benzoic acid column for producing high-purity benzoic acid - Google Patents
Melted benzoic acid column for producing high-purity benzoic acid Download PDFInfo
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- CN105013206A CN105013206A CN201410166206.1A CN201410166206A CN105013206A CN 105013206 A CN105013206 A CN 105013206A CN 201410166206 A CN201410166206 A CN 201410166206A CN 105013206 A CN105013206 A CN 105013206A
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- benzoic acid
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- purification
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Abstract
The invention provides a melted benzoic acid column for producing high-purity benzoic acid. The column is characterized by comprising a column body, a material inlet, a material discharging opening, a material distributor, conduction oil baffle plates, crystallization purification row tubes, and a conduction oil inlet, wherein the material inlet is formed in the upper side of the column body; the material distributor is arranged at the lower side of the material inlet; a plurality of crystallization purification row tubes are arranged in the column body; the conduction oil baffle plates are connected among the crystallization purification row tubes; the conduction oil inlet is formed in the lower sides of the crystallization purification row tubes and is formed in the side surface of the column body. According to the column, the material distributor is arranged at the lower side of the material inlet; materials are uniformly sprayed at the material inlet and then enter the material distributor; the material distributor is used for uniformly spraying the materials onto the inner walls of the crystallization purification row tubes, so that the materials can be prevented from entering one or several of the crystallization purification row tubes, and the crystallization purification quality is improved.
Description
Technical field
The present invention relates to chemical production field, particularly relate to a kind of for the production of high-purity benzoic melting benzoic acid tower.
Background technology
Benzoic acid (C7H6O2), also known as benzoic acid, is that a hydrogen on phenyl ring is replaced the compound formed by carboxyl (-COOH).The general Chang Zuowei medicine of benzoic acid or anticorrisive agent use, and have the effect of Antifungi, bacterium, fungus growth, are usually coated on skin time medicinal, in order to treat the disease of skin of tinea class.For the synthesis of fiber, resin, coating, rubber, tobacco industry.
Highly purified medicinal and food-grade benzoic acid is produced by technical benzene formic acid, be all adopt water-soluble solution in the past, namely at high temperature dissolved technical benzene formic acid with distilled water, by water-fast magazins' layout out, by cooling, benzoic acid is crystallized out again, reach the object improving benzoic acid purity.Because Solubilities of Benzoic Acid in Different Solvents is low, water-soluble solution production efficiency is low, and energy consumption is high, and benzoic acid loss is large.
Summary of the invention
According to above technical problem, the invention provides a kind of for the production of high-purity benzoic melting benzoic acid tower, it is characterized in that comprising device body, material inlet, material row button, material distributor, conduction oil deflection plate, crystallization and purification tubulation, heat conductive oil inlet, material inlet is offered on the upside of described device body, described device body side opening is provided with thermal conductance oil export, described thermal conductance oil export is connected with crystallization and purification tubulation, material distributor is provided with on the downside of described material inlet, described device body inside is provided with many crystallization and purification tubulations, conduction oil deflection plate is connected with between described crystallization and purification tubulation, heat conductive oil inlet is connected with on the downside of described crystallization and purification tubulation, described heat conductive oil inlet is arranged on device body side, material row mouth is offered on the downside of described device body.
Beneficial effect of the present invention is: the present invention is a kind of fusion method production high-purity benzoic melting benzoic acid tower, and simple by this melting benzoic acid tower commercial benzene formic acid technique, energy consumption is low, without the need to other solvent.The benzoic acid that fused junction crystallization is refined can reach standards of pharmacopoeia (BP, NF, USP, CHP etc.), food additives standard and feed grade standard.Material distributor is provided with on the downside of material inlet of the present invention, material is evenly sprayed at material import and enters material distributor by material distributor, material is evenly sprayed on the inwall on the inwall of crystallization and purification tubulation by material distributor, avoid material to concentrate and enter one or several crystallization and purification tubulation, improve crystallization and purification quality.The liquid-state industrial benzoic acid that the raw material that the present invention uses is technical benzene formic acid Workshop Production, directly by Cemented filling to this melting benzoic acid tower, compared with traditional water soluble method, namely the process of solid peracid rising temperature for dissolving is again decreased, additionally reduce the intervention of distilled water, make technique simpler, energy consumption reduces greatly, because the fusing point of material has uniqueness, the benzoic acid product purity produced is also apparently higher than water soluble method, and the benzoic acid purity of being produced by melting benzoic acid tower can reach more than 99.7%.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present invention.
As Fig. 1, device body-1, material inlet-2, material row mouth-3, material distributor-4, conduction oil deflection plate-5, crystallization and purification tubulation-6, heat conductive oil inlet-7, conduction oil outlet-8.
Detailed description of the invention
Embodiment 1
The present invention is a kind of for the production of high-purity benzoic melting benzoic acid tower, comprise device device body 1, material inlet 2, material row mouth 3, material distributor 4, conduction oil deflection plate 5, crystallization and purification tubulation 6, heat conductive oil inlet 7, during installation, first on the upside of device body 1, material inlet 2 is offered, material row mouth 3 is offered in downside, heat conductive oil inlet 7 and thermal conductance oil export 8 are offered in side, then on the downside of material inlet 2, material distributor 4 is installed, device body 1 inside arranges many crystallization and purification tubulations 6, conduction oil deflection plate 5 is connected with between crystallization and purification tubulation 6, heat conductive oil inlet 7 is connected with on the downside of crystallization and purification tubulation 6.
Embodiment 2
The technical benzene formic acid of high-temperature liquid state enters material distributor 4 by material inlet 2, material is evenly sprayed on the inwall of crystallization and purification tubulation 6 by material distributor 4, heat conduction oil mass is regulated by regulating conduction oil terminal valve, thus the temperature of material on crystallization control purification tubulation 6 inwall, first by low temperature, first the impurity lower than benzoic acid fusing point is melted out, then benzoic acid fusing point is warming up to, benzoic acid is melted discharging, finally heat up higher than benzoic acid fusing point, high-melting-point impurity is discharged in melting benzoic acid tower.
Embodiment 3
The technical benzene formic acid of high-temperature liquid state is directly entered this device fabrication high-purity benzene formic acid by the present invention, and saved the energy, anhydrous consumption, improves production efficiency.Concrete data are as follows:
By this invention, produce one ton of high-purity benzene formic acid average unit cost compared with traditional water soluble method technique and reduce by 1500 yuan, by production capacity 5000 tons/year calculating, annual escapable cost: 1500 × 50,00=,750 ten thousand yuan, for my company creates economic worth, improve the competitiveness of product simultaneously.
The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvement, and these improvement also should be considered as protection scope of the present invention.
Claims (1)
1. one kind for the production of high-purity benzoic melting benzoic acid tower, it is characterized in that comprising device body, material inlet, material row button, material distributor, conduction oil deflection plate, crystallization and purification tubulation, heat conductive oil inlet, material inlet is offered on the upside of described device body, material distributor is provided with on the downside of described material inlet, described device body inside is provided with many crystallization and purification tubulations, conduction oil deflection plate is connected with between described crystallization and purification tubulation, heat conductive oil inlet is connected with on the downside of described crystallization and purification tubulation, described heat conductive oil inlet is arranged on device body side, material row mouth is offered on the downside of described device body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410166206.1A CN105013206A (en) | 2014-04-24 | 2014-04-24 | Melted benzoic acid column for producing high-purity benzoic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410166206.1A CN105013206A (en) | 2014-04-24 | 2014-04-24 | Melted benzoic acid column for producing high-purity benzoic acid |
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| Publication Number | Publication Date |
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| CN105013206A true CN105013206A (en) | 2015-11-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410166206.1A Pending CN105013206A (en) | 2014-04-24 | 2014-04-24 | Melted benzoic acid column for producing high-purity benzoic acid |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106478409A (en) * | 2015-11-25 | 2017-03-08 | 衡阳屹顺化工有限公司 | A kind of benzoic acid purification system |
| CN106928050A (en) * | 2017-04-01 | 2017-07-07 | 来安县万博丰环保科技有限公司 | A kind of melting benzoic acid tower for refining high-purity benzene formic acid |
| CN109251140A (en) * | 2017-07-14 | 2019-01-22 | 辽宁华亿化工实业有限公司 | Benzoic acid method of purification and purifying plant |
| CN112691402A (en) * | 2020-12-23 | 2021-04-23 | 安徽英特力工业工程技术有限公司 | Vertical melt crystallizer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4400189A (en) * | 1980-02-13 | 1983-08-23 | Nederlandse Centrale Organisatie Voor Toegepast Natuurwetenschapplijk Onder Zoek | Pulsed crystallization column and method of countercurrent crystallization |
| CN2206141Y (en) * | 1994-10-07 | 1995-08-30 | 中国石油化工总公司 | Fluidized bed crystallizer |
| CN201441828U (en) * | 2009-06-25 | 2010-04-28 | 山东科大创业生物有限公司 | Multi-purpose falling film separator |
| CN202237354U (en) * | 2011-09-29 | 2012-05-30 | 中国石油化工股份有限公司 | Melting crystallizer |
| CN103028271A (en) * | 2012-12-29 | 2013-04-10 | 北京化工大学 | Multi-stage countercurrent crystallizer provided with sieve plates |
| CN103191577A (en) * | 2012-01-10 | 2013-07-10 | 江苏鹏宇化工有限公司 | Falling-film crystallizer |
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2014
- 2014-04-24 CN CN201410166206.1A patent/CN105013206A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4400189A (en) * | 1980-02-13 | 1983-08-23 | Nederlandse Centrale Organisatie Voor Toegepast Natuurwetenschapplijk Onder Zoek | Pulsed crystallization column and method of countercurrent crystallization |
| CN2206141Y (en) * | 1994-10-07 | 1995-08-30 | 中国石油化工总公司 | Fluidized bed crystallizer |
| CN201441828U (en) * | 2009-06-25 | 2010-04-28 | 山东科大创业生物有限公司 | Multi-purpose falling film separator |
| CN202237354U (en) * | 2011-09-29 | 2012-05-30 | 中国石油化工股份有限公司 | Melting crystallizer |
| CN103191577A (en) * | 2012-01-10 | 2013-07-10 | 江苏鹏宇化工有限公司 | Falling-film crystallizer |
| CN103028271A (en) * | 2012-12-29 | 2013-04-10 | 北京化工大学 | Multi-stage countercurrent crystallizer provided with sieve plates |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106478409A (en) * | 2015-11-25 | 2017-03-08 | 衡阳屹顺化工有限公司 | A kind of benzoic acid purification system |
| CN106928050A (en) * | 2017-04-01 | 2017-07-07 | 来安县万博丰环保科技有限公司 | A kind of melting benzoic acid tower for refining high-purity benzene formic acid |
| CN109251140A (en) * | 2017-07-14 | 2019-01-22 | 辽宁华亿化工实业有限公司 | Benzoic acid method of purification and purifying plant |
| CN112691402A (en) * | 2020-12-23 | 2021-04-23 | 安徽英特力工业工程技术有限公司 | Vertical melt crystallizer |
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Application publication date: 20151104 |