Unlock instant, AI-driven research and patent intelligence for your innovation.

Reaction device and process method suitable for continuous synthesis of fluorescent whitening agent

A technology of fluorescent whitening agent and reaction device, which is applied in chemical instruments and methods, sustainable manufacturing/processing, chemical industry, etc. The effect of small land area, reduced production cost, and simple operation

Active Publication Date: 2022-04-12
SHENYANG RES INST OF CHEM IND +1
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The traditional production process is intermittent production, with multiple sets of kettle-type devices, the reaction time is long, and it takes 8 hours to carry out the condensation reaction. series of questions

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Reaction device and process method suitable for continuous synthesis of fluorescent whitening agent
  • Reaction device and process method suitable for continuous synthesis of fluorescent whitening agent
  • Reaction device and process method suitable for continuous synthesis of fluorescent whitening agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] A reaction device suitable for continuous synthesis of fluorescent whitening agents is adopted. The delay reactor R3 is composed of a coil reactor, and the first micro-mixer R1, the second micro-mixer R4 and the collision micro-mixer 21 adopt a Y-shaped flow Channel-type multi-stage collision mixer; heat exchange plate micro-reactor 22 flow channel unit adopts "heart-shaped" shape.

[0065] A method for continuously synthesizing a fluorescent whitening agent using the above-mentioned reaction device.

[0066] After the 4,4'-bis(diethoxyphosphorylmethyl)biphenyl, o-sodium sulfonate benzaldehyde and solvent in the batching storage tank V1 are mixed in the mixed solution storage tank V5 through the batching first transfer pump P1, The mixed solution is injected into the reactor group R2 through the first metering pump P4, and the methanol solution in the methanol solution storage tank V2 and the solvent in the solvent storage tank V3 are respectively injected through the s...

Embodiment 2

[0073] The reaction device suitable for the continuous synthesis of fluorescent whitening agents is adopted, and the collision micro-mixer 21 adopts a Y-shaped channel type multi-stage collision mixer; the flow channel unit of the heat-exchanging plate micro-reactor 22 adopts a "rattle-drum" shape.

[0074] A method for continuously synthesizing a fluorescent whitening agent using the above-mentioned reaction device.

[0075] After the 4,4'-bis(diethoxyphosphorylmethyl)biphenyl, o-sodium sulfonate benzaldehyde and solvent batching in the batching storage tank V1 are mixed through the first material transfer pump P1 input mixed solution storage tank V5, The mixed solution is injected into the reactor group R2 through the first metering pump P4, and the methanol solution in the methanol solution storage tank V2 and the solvent in the solvent storage tank V3 are respectively injected through the second material transfer pump P2 and the third material transfer pump P3 After mixing...

Embodiment 3

[0083] The reaction device suitable for the continuous synthesis of fluorescent whitening agents is adopted, and the collision micro-mixer 21 adopts a separation and recombination multi-stage collision mixer; the flow channel unit of the heat-exchanging plate micro-reactor 22 adopts a "diamond" shape.

[0084] A method for continuously synthesizing a fluorescent whitening agent using the above-mentioned reaction device.

[0085] After the 4,4'-bis(diethoxyphosphorylmethyl)biphenyl, o-sodium sulfonate benzaldehyde and solvent batching in the batching storage tank V1 are mixed through the first material transfer pump P1 input mixed solution storage tank V5, The mixed solution is injected into the reactor group R2 through the first metering pump P4, and the methanol solution in the methanol solution storage tank V2 and the solvent in the solvent storage tank V3 are respectively injected through the second material transfer pump P2 and the third material transfer pump P3 After mix...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of fine chemical engineering, in particular to a reaction device and a process method suitable for continuous synthesis of a fluorescent whitening agent. The reaction device comprises a first micro-mixer, a reactor group, a delay reactor, a second micro-mixer, an ingredient storage tank, a methanol solution storage tank, a solvent storage tank, an acetic acid storage tank, a mixed solution storage tank and a reaction liquid receiving tank. 4, 4 '-bis (diethoxy phosphoryl methyl) biphenyl, o-sodium sulfonate benzaldehyde and sodium methoxide are used as raw materials, dimethyl sulfoxide (DMSO) or dimethyl formamide (DMF) is used as a solvent, and the reaction device is used for continuously synthesizing the fluorescent whitening agent. According to the method, the reaction time can be greatly shortened, the productivity can be improved, the production efficiency can be improved, the energy consumption and the material consumption can be reduced, the product performance can be improved, the safety of a production device can be improved, the market competitiveness of enterprises can be further enhanced, and rapid, efficient and green production of the fluorescent whitening agent (CF-351) product can be realized.

Description

technical field [0001] The invention relates to the technology in the field of fine chemical industry, in particular to a reaction device and a process method suitable for continuous synthesis of fluorescent whitening agents. Background technique [0002] Fluorescent whitening agent is an important fine chemical product. It belongs to optical colorless dyes. Its principle of action is to use light effect to whiten substances. It has developed into 15 types, 359 varieties, and more than 4,000 models in total, and is widely used in daily chemical, textile, papermaking, synthetic resin and synthetic fiber industries. The production and use of fluorescent whitening agents in my country has been for a long time, and has developed into more than a dozen varieties at present, and the output accounts for 4% to 5% of the dyestuffs. Its consumption composition is as follows: about 1% fluorescent whitening agent is used in polymer synthesis, 20% is used in textile industry, 34% is use...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/00C09B23/14
CPCY02P20/10
Inventor 鄢冬茂周川杨林涛王珂刘嵩闫士杰廉鹏飞胥维昌龚党生王振元弓玮
Owner SHENYANG RES INST OF CHEM IND