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

Nontoxic treatment method for cyanide-containing wastes

A treatment method, cyanide technology, applied in the direction of protective devices against harmful chemicals, etc., can solve the problems of manpower consumption and high treatment costs, and achieve the effect of low price, simple operation process and labor saving

Inactive Publication Date: 2020-03-17
兰州蓝星纤维有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only consumes manpower and high processing costs, but also has great risks in the process of transferring and transporting again and again.

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 1

[0033] Take 10kg of waste, the waste is from the ash produced by the decomposition and ashing of high-temperature process materials in the production process of Lanzhou Blue Star Fiber Co., Ltd., which is condensed and deposited in the equipment. The main components are carbon, silicon, and a small amount of cyanide sodium. Process according to the non-toxic treatment method of cyanide-containing waste, the specific steps are as follows:

[0034] (1) In a 200L open plastic barrel, the weight concentration of 100kg is prepared as a 10% sodium hypochlorite solution, fully stirred and mixed.

[0035] (2) Pour 10kg of waste material into the prepared sodium hypochlorite solution, and stir for 3 minutes to ensure that the waste material is completely soaked and submerged by the sodium hypochlorite solution. Leave it for 24 hours.

[0036] (3) Take about 50 mL of the soaking liquid supernatant, add dilute hydrochloric acid with a weight concentration of 15%, and adjust the pH of t...

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 nontoxic treatment method for cyanide-containing wastes, and belongs to the field of nontoxic treatment of wastes. The nontoxic treatment method for cyanide-containing wastes comprise the following steps: (1) preparing a strong oxidizing solution, wherein the strong oxidizing solution is selected from a hypochlorite solution or a chlorate solution; (2) soaking the wastesin the strong oxidizing solution; (3) taking the supernatant of the obtained soaking solution, and carrying out cyanide detection on the supernatant; and (4) adjusting the pH value of the soaking solution, and filtering and treating the soaking solution. The method realizes onsite nontoxic treatment of toxic wastes generated in the carbon fiber production process, treats the treated wastes as common garbage, has the advantages of great saving of manpower, reduction of the cost and the operation danger, low prices of the used raw materials, and simple operation process, and is very suitable for onsite operation.

Description

technical field [0001] The invention relates to the field of non-toxic treatment of waste materials, and more particularly, relates to a method for non-toxic treatment of waste materials containing cyanide. Background technique [0002] In the process of carbon fiber production, there will be a large amount of ash-like waste, which will be gathered in the low-carbon furnace, high-carbon furnace and exhaust pipes. After a period of production, it is necessary to clean up the low-carbon and high-carbon furnaces and their exhaust pipes, otherwise Excessive waste will affect the passage of tow and the discharge of exhaust gas, affecting the quality of carbon fiber products. Due to the generation of highly toxic cyanide in the low and high temperature carbonization process, the waste contains cyanide, which makes the storage and disposal of the waste very risky. [0003] The original treatment method is to collect the waste, put it in a special container, and store it according ...

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): A62D3/30A62D101/45
CPCA62D3/30A62D2101/45
Inventor 王斐李瑞亢严华胡洁花
Owner 兰州蓝星纤维有限公司