Method for preparing washing surfactant by utilizing tanning waste chrome shavings

A technology of surfactant and chrome leather scraps, applied in the field of preparation of surfactants for washing, can solve problems such as environmental pollution, waste of raw material leather resources, etc., solve the problem of environmental pollution, have excellent degreasing effect, and facilitate cake making and granulation Effect

Inactive Publication Date: 2014-01-22
山东全杰皮革研究所有限公司
View PDF5 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It not only wastes the excellent raw leather resou

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
  • Method for preparing washing surfactant by utilizing tanning waste chrome shavings
  • Method for preparing washing surfactant by utilizing tanning waste chrome shavings

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Example 1

[0029] Method for preparing surface active agent for washing by using tannery waste ， Follow the steps below:

[0030] (1) The original form of dechromization of chrome leather shavings: Add dried CaO7g, chrome leather shavings 50g, and 500mL of distilled water into a beaker, mix evenly, soak at 35°C for 1 day, wash with water and filter the residue. Add 6g NaCl, 300mL of distilled water, 15g of oxalic acid and 15mL of concentrated sulfuric acid, stir and mix, dechromate at 30℃ for 3h, wash and filter the filter residue, add 250mL of distilled water, 10g of NaOH and 5g of NaCl, dechromate at 20℃ for 30min, adjust the pH to neutral , The filter residue is collected by washing and filtering; after drying, the original form of dechrome product is obtained.

[0031] (2) Hydrolyze the original form of dechromated product to prepare protein peptide hydrolysate: Add 0.8g of calcium oxide and 100ml of distilled water for every 20g of original form of dechromed product in...

Example Embodiment

[0039] Example 2

[0040] Method for preparing surface active agent for washing by using tannery waste ， Follow the steps below:

[0041] (1) Dechrome in original form of chrome leather shavings: add 5g of dried CaO, 50g chrome leather shavings, and 500mL of distilled water into a beaker. After evenly mixing, soak at 30°C for 48h, and filter the residue after washing. Add 5g NaCl, 360mL of distilled water, 10g of oxalic acid and 15mL of concentrated sulfuric acid, stir and mix, dechrome at 25℃ for 2h, wash and filter the filter residue, add 350mL of distilled water, 5g of NaOH and 10g of NaCl, dechrome at 30℃ for 60min, adjust the pH to neutral , The filter residue is collected by washing and filtering; after drying, the original form of dechrome product is obtained.

[0042] (2) Hydrolyze the original form of dechromated product to prepare protein peptide hydrolysate: add 1.6g of calcium oxide and 50ml of distilled water for every 20g of original form of dechromed product in a th...

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 a method for preparing washing surfactant by utilizing tanning waste chrome shavings. The method comprises the following steps: performing protomorphic dechromization on the tanning waste chrome shavings to obtain a chrome shaving protomorphic dechromized product; hydrolyzing the obtained chrome shaving protomorphic dechromized product to obtain protein polypeptide hydrolysate; performing acylation condensation by utilizing fatty acyl chloride to obtain an initial product of the surfactant; and adding sodium carbonate, sodium dodecyl benzene sulfonate, absolute ethyl alcohol and sodium benzoate, and stirring to react to obtain the final product washing surfactant. If the surfactant prepared by utilizing waste leftovers in tanning can be popularized and applied, the problem of environmental pollution caused by tanning waste can be effectively solved, and the production cost for the surfactant product can be greatly reduced.

Description

technical field [0001] The invention relates to a method for preparing a cleaning surfactant by using tanning waste. Background technique [0002] The main problems faced by the tanning industry are the great waste of resources and the great pollution of the environment. In the process of leather product manufacturing, the leather products that can be sold account for about 20% of the raw leather quality, and the rest are discarded as tanning waste. It not only wastes excellent raw material leather resources, but also causes great environmental pollution. [0003] It is reported that the American tanning industry produces about 70,000 tons of chromium-containing leather waste every year, and the Indian tanning industry discharges more than 160,000 tons of tanning waste every year. As many as 1.4 million tons, which contains waste chrome leather shavings. And these tanning wastes are one of the chief culprits that cause the pollution of the tanning industry to become incre...

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): C11D1/83C11D3/60C11D3/10C11D3/20C07K1/12C14C1/08
Inventor 王全杰曲家乐
Owner 山东全杰皮革研究所有限公司
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