Method for refining J acid by using multi-functional integrated device
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of multifunctional equipment and integrated equipment, which is applied in the fields of organic chemical industry and dye technology, can solve the problems of a large number of equipment, low production efficiency, and high labor intensity, and achieve the effect of low manual operation intensity, high production efficiency, and high degree of automation
Inactive Publication Date: 2013-04-10
HEBEI UNIV OF TECH +1
View PDF2 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
In the existing refining method, each step is carried out separately, and about 1.7 to 1.8 tons of crude medium acid are consumed for each ton of fine medium acid produced, so there are many equipments, large floor area, high labor intensity, low production efficiency, and large loss of raw materials And other issues
[0004] At present, in the pharmaceutical, chemical, pesticide, food and other industries, a multifunctional equipment integrating filtration, washing and drying is widely used. This equipment can replace filtration and drying equipment (suction filter, press filter, double cone drying device, drying oven, etc.), complete the process of stirring, temperature control, filtration, washing, drying, solid unloading, etc. in the same equipment, but this equipment has not been used in the media acid refining process.
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0015] The present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.
[0016] See attached figure 1 , the acid refining process is divided into the integrated process of alkaline water dissolution-salting-out-filtration-washing-clean water dissolution, the integrated process of decolorization-filtration-washing and the integrated process of acid analysis-filtration-washing-drying. The above-mentioned integration processes are completed in the multi-functional equipment integrating drying and drying. The multi-functional equipment should have the functions of stirring, temperature control, filtering, washing, drying, solid unloading, and liquid storage at the same time. The equipment material has anti-acid and alkali corrosion properties. .
[0017] Add water, sodium carbonate and medium acid to the first multifunctional equipment integrating filtration, washing and drying, raise the temperature to 80°C,...
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
Login to view more
Abstract
The invention provides a method for refining J acid by using a multi-functional integrated device, which comprises alkaline water dissolution, salting out, filtering, washing, clear water dissolution integrated process and decoloration, filtering, washing integrated process and the acidification, filtering, washing, and drying integrated process, the alkaline water dissolution, salting out, filtering, washing, and clear water dissolution integrated processes are completed in a first multi-functional device integrating filtering, washing and drying into a whole and decoloration, filtering, washing integrated processes are completed in a second multi-functional device integrating filtering, washing and drying into the whole, and the acidification, filtering, washing, drying integrated processes are completed in a third multi-functional device integrating filtering, washing and drying into the whole. The method has the advantages of a small number of devices, small occupied area, high degree of automation, low loss of raw materials, easy realization of large-scale continuous operation and the like, and can be widely applied in dye production, organic chemical industry and other fields.
Description
technical field [0001] The invention relates to a method for refining medium acid with multifunctional integrated equipment, which belongs to the fields of dye technology and organic chemical industry. Background technique [0002] Meso-acid is a kind of dye intermediate, which can be used to produce di-meta-acid, scarlet acid, phenyl-meta-acid, direct dyes and reactive dyes, etc. The content of intermediate acid in industrial crude product is only about 90%, which also contains water, gamma acid and some other insoluble substances, so it usually needs to be refined before use to remove the original impurities in the crude product and obtain fine intermediate acid. [0003] Medium acid refining mainly includes the steps of alkaline water dissolution, salting out, filtration, washing, water dissolution, decolorization, filtration, washing, acid analysis, filtration, washing, drying, etc., among which, in each step of filtration and washing, it is necessary to repeat Multiple...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.