CN104327028A - Methylmaltol crystallization continuously producing method and methylmaltol crystallization continuously producing device - Google Patents
Methylmaltol crystallization continuously producing method and methylmaltol crystallization continuously producing device Download PDFInfo
- Publication number
- CN104327028A CN104327028A CN201410501483.3A CN201410501483A CN104327028A CN 104327028 A CN104327028 A CN 104327028A CN 201410501483 A CN201410501483 A CN 201410501483A CN 104327028 A CN104327028 A CN 104327028A
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- CN
- China
- Prior art keywords
- crystallization
- prilling tower
- methylmaltol
- continuously producing
- tower
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D309/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
- C07D309/34—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D309/36—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with oxygen atoms directly attached to ring carbon atoms
- C07D309/40—Oxygen atoms attached in positions 3 and 4, e.g. maltol
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0004—Crystallisation cooling by heat exchange
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention belongs to the technical field of production of methylmaltol and relates to a methylmaltol crystallization continuously producing method and a methylmaltol crystallization continuously producing device. A crystallization column is disposed behind a reaction kettle. A circular spray thrower is disposed in the crystallization column. A material is sprayed from the circular spray thrower and is reversedly contacted with cool air from the bottom of the column, thereby achieving an crystallization and separation object. The device and the method achieve continuous production of a product, greatly increase the conversion rate of the material, reduce volatilization of a solvent and labor intensity of operators, and ensure production quality.
Description
Technical field
The invention belongs to voitol production technical field, relate to a kind of methyl maltol crystallization continuous production method and device.
Background technology
All can produce side reaction in many Chemicals production processes, and with a large amount of pollutant emission, cause the huge wasting of resources, also very large on the production cost impact of major product.How to reduce by product and improve conversion rate of products, reducing the discharge of the three wastes, is the key subjects that current enterprise technology personnel will study.
The traditional working method of methyl maltol crystallization is dropped in certain proportion in heating kettle a certain amount of ethanol and methyl material, after heating for dissolving, sends in cooling reactor and stir cooling, then dried by cooled material whizzer, obtains product through drying.This technique is batch production, transformation efficiency lower (being about 78%), and easily brings in material by impurity, and affect methyl quality product, production capacity is low, and there is larger environmental pollution, does not meet the industry policy of country.
Summary of the invention
It is many that object of the present invention will solve side reaction in existing methyl maltol crystallization processes exactly, and the problem that production capacity is low provides a kind of methyl maltol crystallization continuous production method and device.
Concrete technical scheme:
A kind of methyl maltol crystallization continuous production method, is characterized in that following steps:
A. ethanol and methyl material are dropped in heating kettle with the ratio of 3:1, both are dissolved mixing; The material of dissolving is squeezed into prilling tower inner top by dnockout pump, spray material downwards by circle distributor, send into cold wind simultaneously with induced draft fan bottom prilling tower in tower, material contacts with cold wind is reverse, material cooled and realizes solid-liquid separation, falling into filtering net and solid-liquid is separated further;
B. mother liquor reuse is carried out after being discharged by isolated solvent; Solid then enters feed bin by the tilted plate of bottom, then post-drying.
A kind of methyl maltol crystallization quantity-produced device, is characterized in that:
A prilling tower is set, the top material import of prilling tower is installed a downward ring sparger of outlet, expect that the outlet of still is connected by pump with boiling; Be provided with the filtering net of inclination bottom prilling tower, communicate with feed bin bottom filtering net; The bottom of inclined filter screen be provided with the mother liquor discharge port be connected with pump; Be provided with cold heat exchanger and connected induced draft fan thereof outside prilling tower, induced draft fan is connected with bottom prilling tower by pipeline.
The invention has the advantages that, improve materials conversion rate, decrease the volatilization of solvent, reduce the labour intensity of workman, ensure quality product.
Accompanying drawing explanation
Fig. 1 is method and the device schematic diagram of methyl maltol crystallization continuous production method.
Embodiment
Embodiment 1
A kind of methyl maltol crystallization continuous production method, is characterized in that comprising the following steps:
A. the ethanol of 3t and 1t methyl material are dropped in heating kettle with the ratio of 3:1, be heated to 80 degree, make both dissolve mixing; The material of dissolving is squeezed into prilling tower inner top by dnockout pump, by circle distributor downwards with 3m
3the speed ejection material of/h, bottom prilling tower, send into cold wind with induced draft fan in tower, material contacts with cold wind is reverse, is cooled by material and realizes solid-liquid separation simultaneously, falls into finly filtration net and is separated further by solid-liquid;
B. by isolated 3.1m
3solvent carries out mother liquor reuse after discharging; 0.8t solid then enters feed bin by the tilted plate of bottom, then dries.
A kind of methyl maltol crystallization quantity-produced device, is characterized in that:
Arrange a prilling tower, the top material import of prilling tower is installed a downward ring sparger of outlet, the diameter 5mm of shower nozzles, exports several 50, expects that the outlet of still is connected by pump with boiling; Be provided with the finly filtration net (20 order Stainless Steel Cloth) of inclination 45 ° bottom prilling tower, finly filtration sieve bottom communicates with feed bin; The bottom of inclination finly filtration net be provided with the mother liquor discharge port be connected with pump; The temperature of prilling tower is then controlled by the cold heat exchanger of peripheral hardware, and the temperature of crystallization control tower is at-5 degree.
Claims (2)
1. a methyl maltol crystallization continuous production method, is characterized in that comprising the following steps:
A. drop in heating kettle by ethanol and methyl material with the ratio of 3:1, both are dissolved mixing by heating; The material of dissolving is squeezed into prilling tower inner top by dnockout pump, spray material downwards by circle distributor, send into cold wind simultaneously with induced draft fan bottom prilling tower in tower, material contacts with cold wind is reverse, material cooled and realizes solid-liquid separation, falling into filtering net and solid-liquid is separated further;
B. mother liquor reuse is carried out after being discharged by isolated solvent; Solid then enters feed bin by the tilted plate of bottom, and post-drying.
2. a methyl maltol crystallization quantity-produced device, comprises prilling tower, it is characterized in that:
The top material import of prilling tower is installed a downward ring sparger of outlet, ring sparger expects that the outlet of still is connected by pump with boiling; Be provided with the filtering net of inclination bottom prilling tower, communicate with feed bin bottom filtering net; The bottom of inclined filter screen be provided with the mother liquor discharge port be connected with pump; Be provided with cold heat exchanger and connected induced draft fan thereof outside prilling tower, induced draft fan is connected with bottom prilling tower by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410501483.3A CN104327028A (en) | 2014-09-27 | 2014-09-27 | Methylmaltol crystallization continuously producing method and methylmaltol crystallization continuously producing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410501483.3A CN104327028A (en) | 2014-09-27 | 2014-09-27 | Methylmaltol crystallization continuously producing method and methylmaltol crystallization continuously producing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104327028A true CN104327028A (en) | 2015-02-04 |
Family
ID=52401848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410501483.3A Pending CN104327028A (en) | 2014-09-27 | 2014-09-27 | Methylmaltol crystallization continuously producing method and methylmaltol crystallization continuously producing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104327028A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113562909A (en) * | 2020-04-29 | 2021-10-29 | 中国石油化工股份有限公司 | Salt-containing wastewater treatment system and treatment method |
| CN113893809A (en) * | 2021-10-14 | 2022-01-07 | 丽江英煌集生物工程有限公司 | Device and method for synthesizing and purifying macamide |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103570658A (en) * | 2013-11-01 | 2014-02-12 | 安徽金禾实业股份有限公司 | Decolorizing and recrystallizing method of methyl maltol |
-
2014
- 2014-09-27 CN CN201410501483.3A patent/CN104327028A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103570658A (en) * | 2013-11-01 | 2014-02-12 | 安徽金禾实业股份有限公司 | Decolorizing and recrystallizing method of methyl maltol |
Non-Patent Citations (2)
| Title |
|---|
| 张罡等: "硫酸镁空气冷却结晶塔工作原理及物料热量衡算", 《化工设计》 * |
| 张罡等: "空气冷却结晶塔工艺设计计算", 《化肥设计》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113562909A (en) * | 2020-04-29 | 2021-10-29 | 中国石油化工股份有限公司 | Salt-containing wastewater treatment system and treatment method |
| CN113893809A (en) * | 2021-10-14 | 2022-01-07 | 丽江英煌集生物工程有限公司 | Device and method for synthesizing and purifying macamide |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150204 |