Method for producing calcium formate from sugar mill filter mud

A sugar factory filter sludge and calcium formate technology, which is applied in the direction of carboxylate preparation, etc., can solve the problems of carbonation filter sludge moisture and organic nutrients not reaching biological fertilizers, difficulty in consuming filter sludge, waste of land resources, etc., to achieve promotion Effects of sustainable development, improvement of competitiveness, and reduction of economic pressure

Inactive Publication Date: 2013-02-13
SHANDONG ZHONGGU STARCH SUGAR
View PDF2 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, the annual output of filter mud reaches tens of millions of tons, which is difficult to handle, accumulates and occupies an area, wasting huge land resources
In addition to being used as industrial raw materials, the wet filter mud produced by domestic crushing of sugarcane sugar is effectively used to make biological fertilizers. The existing sugar producti

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0021] Main raw materials and specifications: formic acid content 88.0%, heavy metal (calculated as Pb) ≤ 0.0003% diluted to 70%, spare; equipped with 25% (mass volume ratio) lime milk solution, spare; filter mud calcium carbonate content ≥ 70%, fine Degree 200 mesh, moisture content ≤ 18%, PH: 7~8.

[0022] The bulk particles of the filter mud are crushed, and the crushed raw material filter mud calcium carbonate powder is added to the reaction tank, and then the prepared formic acid solution is added, and the stirring is started. At room temperature, formic acid is added dropwise to the reaction tank until the pH is 4. , and then continue to react for 20 minutes until no bubbles are generated to ensure that the calcium carbonate in the filter mud reacts completely. Then add 25% milk of lime to carry out neutralization reaction of excess formic acid, react until the pH value is 7, centrifuge, air-dry and package to obtain calcium formate product, and the mother liquor is recy...

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 field of industrial waste reutilization, and particularly discloses a method for producing calcium formate from sugar mill filter mud. The method comprises the followings steps: crushing the raw material sugar mill calcium carbonate filter mud, grinding, and adding 70 wt% formic acid solution into the filter mud while stirring until no bubble is generated, thereby completing the reaction; and regulating the pH value to 6-7 with 25 wt% lime cream, separating the reaction solution, and drying to obtain the product. The invention has the advantages of simple production technique, low cost, short technical process, low energy consumption and low investment; the formic acid and calcium carbonate filter mud can be directly used as the raw materials to synthesize the ideal calcium formate product by one step; and the purity and quality of the product satisfy the general demands.

Description

(1) Technical field [0001] The invention relates to the field of industrial waste reuse, in particular to a method for producing calcium formate by using sugar factory filter mud. (2) Background technology [0002] As the main production waste of sugar refinery, filter sludge has caused great pollution to the environment. It has attracted widespread attention at home and abroad, and the research on its resource utilization has also made great progress. Through industrial and agricultural applications, it can fully turn waste into treasure, which is of great practical significance to the development of the circular economy of the sugar industry, the promotion of the sustainable development of the sugar industry, the maximization of the economic and environmental benefits of the sugar industry, and the improvement of the competitiveness of the sugar industry. . At present, its applications mainly include the following aspects: [0003] (1) Limestone is produced as an ind...

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
IPC IPC(8): C07C53/06C07C51/41
Inventor 曹永兴梁伟李宁周焕霞张素丽李霞
Owner SHANDONG ZHONGGU STARCH SUGAR
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap