A treatment process for resource utilization of medical waste salt by medium-temperature pyrolysis

A treatment process and resource utilization technology, which is applied in the field of thermal pyrolysis and resource utilization of pharmaceutical waste salt, can solve the problems of waste salt residue easy to agglomerate, high energy consumption for high temperature treatment of waste salt, corrosion of equipment, etc.

Active Publication Date: 2021-07-06
浙江红狮环保股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above methods and the prior art usually use the high temperature method to recycle and treat the waste salt of medicine. The method usually heats the waste salt to 800-1000°C. The high temperature treatment of the waste salt consumes a lot of energy, and the waste salt slag is easy to form rings during the treatment process. block, causing problems with corroded equipment

Method used

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  • A treatment process for resource utilization of medical waste salt by medium-temperature pyrolysis
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  • A treatment process for resource utilization of medical waste salt by medium-temperature pyrolysis

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Effect test

Embodiment 1

[0026] A medium-temperature pyrolysis resource utilization treatment process for medical waste salt, the main scheme of which is:

[0027] Add 1 kg of anti-caking agent to 1000 kg of medical waste salt, mix and stir in the mixing tank for 10 minutes, then add the waste salt to the dryer, control the temperature at 80°C, and dry for 120 minutes to keep the water and volatile organic solvents in the waste salt Wait for the volatile component content to be 0.1%. After the completion, slowly add the waste salt into the medium temperature reactor with a feeder, the feed rate is 50kg / min; the temperature of the first section of the reactor is 350°C, and the heating reaction time is 30min; The temperature of the second stage in the reactor is 450°C, and the heating reaction time is 40 minutes; it is characterized in that the medium-temperature reactor is an ebullating bed reactor, and the waste salt is fed into the reactor bottom after being fed with compressed air , the waste salt i...

Embodiment 2

[0036] A medium-temperature pyrolysis resource utilization treatment process for medical waste salt, the main scheme of which is:

[0037]Add 5kg of anti-caking agent to 1200kg of medical waste salt, mix and stir in the mixing tank for 30 minutes, then add the waste salt to the dryer, control the temperature at 110°C, and dry for 80 minutes to keep the water and volatile organic solvents in the waste salt Wait for the volatile component content to be 2.5%. After completion, slowly add the waste salt into the medium temperature reactor with a feeder, the feed rate is 60kg / min; the temperature of the first section of the reactor is 400°C, and the heating reaction time is 20min; The temperature in the second section of the reactor is 550°C, and the heating reaction time is 30 minutes; it is characterized in that the medium-temperature reactor is an ebullating bed reactor, and the waste salt is fed into the reactor bottom after being fed with compressed air , the waste salt in the...

Embodiment 3

[0046] A medium-temperature pyrolysis resource utilization treatment process for medical waste salt, the main scheme of which is:

[0047] Add 10kg of anti-caking agent to 1500kg of medical waste salt, mix and stir in the mixing tank for 60 minutes, then add the waste salt to the dryer, control the temperature at 130°C, and dry for 10 minutes to keep the water and volatile organic solvents in the waste salt Wait for the volatile component content to be 05%. After completion, use the feeder to slowly add the waste salt into the medium-temperature reactor at a feed rate of 80kg / min; the temperature of the first section of the reactor is 450°C, and the heating reaction time is 5min; The temperature in the second section of the reactor is 650°C, and the heating reaction time is 10 minutes; the characteristic is that the medium temperature reactor is an ebullating bed reactor, and after the waste salt is added to the reactor, compressed air is introduced at the bottom of the reactor...

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Abstract

The present invention relates to the field of environmental protection, and specifically relates to a treatment process for resource utilization of medical waste salt at medium temperature pyrolysis; the present invention provides a process for resource utilization of waste medical salt at medium temperature pyrolysis. The principle is to use lower temperature to fully oxidize and decompose organic pollutants from the waste salt that has removed volatile substances, so as to achieve the purpose of harmless treatment of waste salt and then resource utilization; the invention adds an inorganic salt anti-caking agent, It can effectively prevent the waste salt from agglomerating in the fluidized bed reactor and ensure the sufficient oxidation and decomposition of organic pollutants, which is the key to the process; the waste salt obtained by the treatment method of medical waste salt of the present invention has extremely low organic residues and no agglomeration phenomenon. The organic matter is fully oxidized, and the energy saving is significantly reduced. The effective treatment of medical waste salt can not only protect the environment, but also reuse the main component sodium chloride salt to make up for the market gap, which has high economic value.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a medium-temperature pyrolysis resource utilization treatment process for medical waste salt. Background technique [0002] The main components of medical waste salt are inorganic salts such as sodium chloride, a small amount of nitrate, sulfate and other inorganic impurities. In addition, medical waste salt contains a large amount of harmful and refractory organic matter, which produces a strong fishy smell. It is usually required as Hazardous waste is sent to landfill for disposal. Open storage or dumping into the open environment poses a huge threat to the environment. [0003] CN108164138A discloses a harmless treatment method for waste medicine salt, which comprises the following steps: take waste medicine salt and quartz sand; add additives; fully mix, set the temperature; heat up and keep warm; cool down to room temperature to obtain treated Harmless products. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/00B09B5/00
CPCB09B3/00B09B5/00B09B3/40
Inventor 唐柯李春萍黄敏锐黄学慧郭晓露陈慧斌
Owner 浙江红狮环保股份有限公司
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