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

Harmless resourceful treatment method for medical wastes

A technology of medical waste and treatment method, which is applied in the field of harmless and resourceful treatment of medical waste, can solve the problems of large investment, secondary pollution, and difficulty in incineration temperature above 950°C, and achieve the elimination of dioxins, Eliminate odor pollution and benefit the environment

Active Publication Date: 2016-10-12
湖南省小尹无忌环境能源科技开发有限公司
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 3) Incineration-high-temperature steam sterilization technology, that is, the steam generated by incineration heat recovery is used in an autoclave to treat medical waste (steam treatment). This method requires a large investment and is prone to secondary pollution;
[0017] Obviously, most of the above-mentioned technologies have certain deficiencies, and all of them have certain conditions and scope of use. Only the high-temperature incineration treatment method has comprehensive advantages such as wide application range, thorough final disinfection, and mature technology. However, the existing medical waste It is difficult for the incineration temperature of the professional incinerator to reach above 950°C. Generally, the temperature in the incinerator can only reach 700-900°C under the conditions of oil injection, gas injection or high-quality bituminous coal for combustion support (just the temperature range where a large amount of dioxins are produced) )

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] The medical waste is taken from the mixed waste of dressing room, injection room and inpatient department of a medical institution, including large pieces. The medical waste is crushed by a shear crusher to a material of <50mm for use, and its industrial analysis is moisture 31.3%, ash content 1.3%, volatile matter 55.7%, fixed carbon 11.7%, low calorific value 12509.8KJ / kg, the oxidative nitrating agent is selected from the commercially available ZCR3 liquid oxidative nitrating agent of Changsha Zichen Technology Development Co., Ltd. (its strong oxidizing agent Lithium perchlorate, potassium ferrate content ≥ 20wt%, its nitrate cerium nitrate, lithium nitrate content ≥ 20wt%), cementing materials are commercially available 42.5 grade Portland cement and liquid water glass, according to the following steps for medical waste Harmless and resourceful treatment of waste:

[0034] (1) Prepare safe solid fuels: use medical wastes as alternative fuels and raw materials for d...

Embodiment 2

[0038] The medical waste is taken from a medical waste incineration station. The industrial analysis shows that the moisture is 29.7%, the ash content is 5.7%, the volatile matter is 55.1%, the fixed carbon is 9.6%, and the low calorific value is 13365.7KJ / kg. The ZCR3 liquid oxidizing and nitrating agent sold by Changsha Zichen Technology Development Co., Ltd., the cementing material is commercially available construction gypsum powder, and the harmless resource treatment of medical waste is carried out according to the following steps:

[0039] (1) Prepare safe solid fuels: use medical wastes as alternative fuels and raw materials for dry-process rotary kiln cement production, use oxidative nitrating agents and cementing materials to convert medical wastes into safe solid fuels, and use medical waste as a percentage by mass Waste 65%: oxidizing and nitrating agent 5%: cementing material (building gypsum powder) 30% of the ingredients, put the broken medical waste in the mixer...

Embodiment 3

[0043] The medical waste is taken from the mixed waste of dressing room, injection room and inpatient department of a medical institution, including large pieces. The medical waste is crushed by a shear crusher to a material of <50mm for use, and its industrial analysis is moisture 33.3%, ash content 4.6%, volatile matter 52.7%, fixed carbon 10.4%, low calorific value 12986KJ / kg, the oxidizing and nitrating agent is selected from the commercially available ZCR3 type liquid oxidized and nitrated agent of Changsha Zichen Technology Development Co., Ltd., and the cementing material is selected from the market. The sulphoaluminate cement sold by the company can be treated as a harmless resource of medical waste according to the following steps:

[0044] (1) Prepare safe solid fuel: use medical waste as an alternative fuel and raw material for dry-process rotary kiln cement production, use oxidative nitrating agents and cementing materials to convert medical waste into safe solid fu...

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

A harmless resourceful treatment method for medical wastes comprises the following steps that (1) safe solid fuel is prepared, specifically, the medical wastes are converted into the safe solid fuel through oxidation and nitration agents and cementing materials, 60-94.5% of the medical wastes, 0.5-10% of the oxidation and nitration agents and 5-39.5% of the cementing materials are mixed evenly by mass percentage, and the solid fuel is formed and cured; and (2) resource utilization is conducted, specifically, the safe solid fuel is added into a smoke chamber from a kiln tail of a dry-process rotary kiln and burns out in a bottoming temperature field of 1050+ / -50 DEG C; or the safe solid fuel is added into the rotary kiln from a kiln head and rapidly burns out in 1300-1450 DEG C clinkers at the bottom of the rotary kiln or in flame of 1650-2000 DEG C; or the safe solid fuel serves alternative fuel to be directly added into a coal-fired boiler to burn out. The harmless resourceful treatment method for medical wastes is simple, safe and low in investment, medical wastes can be utilized harmlessly and resourcefully, and environment-friendly, low-carbon and circular economy development is achieved.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a method for harmless and resourceful treatment of medical waste. Background technique [0002] Medical waste refers to the waste generated by hospitals and other medical institutions, including infectious waste, pathological waste, pharmaceutical waste, heavy metal waste, patient waste, sharps waste and radioactive waste (the sharps Sexual waste is actually recycled separately because of its high recycling value, and most of its radioactive waste is treated as an alternative treatment except for the radioactive excreta of patients), which is a place where there are a large number of complex infectious viruses, germs, chemical pollutants, and radioactive harmful substances. High-risk waste with high moisture content (the moisture content of general outpatient general surgery and internal medicine waste is about 30%, and the moisture content of surgical waste is 60-75%). F...

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): B09B3/00B09B5/00
CPCB09B3/00B09B5/00
Inventor 尹无忌尹小林
Owner 湖南省小尹无忌环境能源科技开发有限公司