阅读说明：本技术 零排放危废处理工艺 (Zero-emission hazardous waste treatment process ) 是由 刘�文 王廷 于 2020-11-19 设计创作，主要内容包括：本发明属于危废处理技术领域,具体涉及一种零排放危废处理工艺,包括以下步骤：(1)一次燃烧：将危废投入一次高温室内,在助燃剂的作用下进行一次燃烧,产生的高温烟气经热交换器提取热能,将热能回收利用于生产；(2)二次燃烧：提取热能冷却后的烟气投入二次高温室内,在助燃剂的作用下进行二次燃烧,产生的高温烟气经热交换器提取热能；(3)提取热能冷却后的烟气进入步骤(1)中的一次高温室内循环使用。本发明通过利用空气的冷热膨胀率原理,实现无尾气排放,真正做到零排放,无污染,同时能够在处理过程中将无机物料和有机溶剂进行回收利用,将产生的热能有效回收利用,避免了大量资源的浪费。(The invention belongs to the technical field of hazardous waste treatment, and particularly relates to a zero-emission hazardous waste treatment process, which comprises the following steps: (1) primary combustion: putting the hazardous waste into a primary high-temperature chamber, carrying out primary combustion under the action of a combustion improver, extracting heat energy from the generated high-temperature flue gas through a heat exchanger, and recycling the heat energy for production; (2) secondary combustion: the flue gas after the heat energy extraction and cooling is put into a secondary high-temperature chamber, secondary combustion is carried out under the action of a combustion improver, and the generated high-temperature flue gas is subjected to heat energy extraction through a heat exchanger; (3) and (3) the flue gas after heat energy extraction and cooling enters the primary high-temperature chamber in the step (1) for recycling. The invention realizes no tail gas emission by utilizing the principle of the cold-heat expansion rate of air, really realizes zero emission and no pollution, and can recycle inorganic materials and organic solvents in the treatment process, effectively recycle the generated heat energy and avoid the waste of a large amount of resources.)

1. A zero-emission hazardous waste treatment process is characterized by comprising the following steps: the method comprises the following steps:

(1) primary combustion: putting the hazardous waste into a primary high-temperature chamber, carrying out primary combustion under the action of a combustion improver, and extracting heat energy from the generated high-temperature flue gas through a heat exchanger;

(2) secondary combustion: the flue gas after the heat energy extraction and cooling is put into a secondary high-temperature chamber, secondary combustion is carried out under the action of a combustion improver, and the generated high-temperature flue gas is subjected to heat energy extraction through a heat exchanger;

(3) and (3) the flue gas after heat energy extraction and cooling enters the primary high-temperature chamber in the step (1) for recycling.

2. The zero-emission hazardous waste treatment process according to claim 1, characterized in that: the combustion improver is oxygen.

3. The zero-emission hazardous waste treatment process according to claim 1, characterized in that: and (2) recycling inorganic materials generated after the primary combustion in the step (1).

4. The zero-emission hazardous waste treatment process according to claim 1, characterized in that: and (3) extracting the high-temperature flue gas in the step (1) through a heat exchanger to condense the extracted heat energy to generate an organic solvent, and recycling the organic solvent.

5. The zero-emission hazardous waste treatment process according to claim 1, characterized in that: and (3) recycling inorganic materials generated after secondary combustion in the step (2).

6. The zero-emission hazardous waste treatment process according to claim 1, characterized in that: and (3) extracting the high-temperature flue gas in the step (2) through a heat exchanger to condense the extracted heat energy to generate an organic solvent, and recycling the organic solvent.

7. The zero-emission hazardous waste treatment process according to claim 1, characterized in that: and (4) the flue gas after the heat energy extraction and cooling in the step (3) enters a gas-oxygen mixer to be mixed with oxygen, and then enters the primary high-temperature chamber in the step (1) for recycling.

8. The zero-emission hazardous waste treatment process according to claim 1, characterized in that: the hazardous waste is organic industrial hazardous waste or medical hazardous waste.

Technical Field

The invention belongs to the technical field of hazardous waste treatment, and particularly relates to a zero-emission hazardous waste treatment process.

Background

The industrial hazardous waste has complex components, contains metal, plastic, oil stain and the like, and in order to realize reasonable utilization of resources, the hazardous waste is generally converted into a raw material which can be utilized through recycling and processing. Most of the existing industrial hazardous waste treatment methods adopt a combustion mode, hazardous waste materials are easy to generate harmful substances such as dioxin in the processing and treatment process, and the harmful substances are harmful to the environment and human bodies after being diffused, pollute the environment and are not beneficial to environmental protection; and beneficial components and the like in the industrial hazardous waste treatment are difficult to recycle, and a large amount of heat energy cannot be effectively recycled, so that the waste of resources is caused.

At present, the requirement for environmental protection treatment is improved, the standard of exhaust emission is improved, and therefore, hazardous waste materials can be purified through a certain process in the treatment process so as to avoid the generation of harmful substances such as dioxin. And a lot of enterprises invest a large amount of manpower and material resources for environmental protection treatment, and cannot treat the environmental protection treatment fundamentally.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the process overcomes the defects of the prior art, and provides a zero-emission hazardous waste treatment process, which realizes no tail gas emission, really realizes zero emission and no pollution by utilizing the principle of the cold and heat expansion rate of air.

The zero-emission hazardous waste treatment process comprises the following steps:

(1) primary combustion: putting the hazardous waste into a primary high-temperature chamber, carrying out primary combustion under the action of a combustion improver, extracting heat energy from the generated high-temperature flue gas through a heat exchanger, and recycling the heat energy for production;

(2) secondary combustion: the flue gas after the heat energy extraction and cooling is put into a secondary high-temperature chamber, secondary combustion is carried out under the action of a combustion improver, and the generated high-temperature flue gas is subjected to heat energy extraction through a heat exchanger;

(3) and (3) the flue gas after heat energy extraction and cooling enters the primary high-temperature chamber in the step (1) for recycling.

Wherein:

preferably, the combustion improver is oxygen.

And (2) recycling inorganic materials generated after primary combustion in the step (1) and taking the inorganic materials as general industrial raw materials.

And (3) extracting the high-temperature flue gas in the step (1) and the step (2) by a heat exchanger to condense the extracted heat energy to generate an organic solvent, and recycling the organic solvent to convert the organic solvent into a general chemical raw material.

And (3) recycling the inorganic material generated after the secondary combustion in the step (2).

And (4) enabling the flue gas after heat energy extraction and cooling in the step (3) to enter a gas-oxygen mixer to be mixed with oxygen to reach the standard, and then enabling the flue gas to enter the primary high-temperature chamber in the step (1) for recycling.

The combustible organic hazardous waste is put into a high-temperature chamber, no combustible substance is needed, the spontaneous combustion of organic matters can be realized only by using a combustion improver, then the combustion is realized, the high temperature is formed, heat energy is generated, more than 95% of combustible substances can be burnt out after the primary combustion, the rest combustible substances are subjected to secondary combustion under the action of the combustion improver, the generated heat energy is collected and used for production, the generated high-temperature flue gas expands at the high temperature by utilizing the principle of the cold and hot expansion rate of air, then the high-temperature flue gas is cooled after entering a heat exchanger, the organic matters in the flue gas are condensed to generate an organic solvent, the organic solvent can be converted into a general chemical raw material to be recovered, finally, the organic combustible substances are burnt out after the secondary combustion, and the flue gas is mixed with oxygen through a gas. Finally, the method can realize no tail gas emission, and really realize zero emission and no pollution.

The invention can treat general organic industrial hazardous waste, and more importantly, can treat hazardous waste generated in medical treatment, and really realizes harmless treatment at high temperature, thereby thoroughly and fundamentally solving the problem that secondary pollution is caused to air by high-temperature furnace flue emission and tail gas emission, and the air quality is influenced.

Compared with the prior art, the invention has the following beneficial effects:

the invention realizes no tail gas emission by utilizing the principle of the cold-heat expansion rate of air, really realizes zero emission and no pollution, and can recycle inorganic materials and organic solvents in the treatment process, effectively recycle the generated heat energy and avoid the waste of a large amount of resources.

Drawings

FIG. 1 is a process flow diagram of the present invention.

Detailed Description

The present invention will be further described with reference to the following examples.

Example 1

The zero-emission hazardous waste treatment process comprises the following steps:

(1) primary combustion: putting organic industrial hazardous wastes into a primary high-temperature chamber, carrying out primary combustion under the action of a combustion improver oxygen, expanding generated high-temperature flue gas at high temperature, then entering a heat exchanger to extract heat energy, recycling the heat energy for production, recycling an organic solvent generated by cold contraction of the condensed flue gas to convert the organic solvent into a general chemical raw material, and recycling an inorganic material generated after primary combustion to serve as a general industrial raw material;

(2) secondary combustion: the flue gas after heat energy extraction and cooling is put into a secondary high-temperature chamber, secondary combustion is carried out under the action of combustion improver oxygen, the generated high-temperature flue gas extracts heat energy through a heat exchanger, the heat energy is recycled for production, the organic solvent generated after condensation is recycled and converted into a common chemical raw material, and the inorganic material generated after secondary combustion is recycled and used as a common industrial raw material;

(3) and (3) the flue gas after heat energy extraction and cooling enters a gas-oxygen mixer to be mixed with oxygen to reach the standard, and then enters the primary high-temperature chamber in the step (1) for recycling.

The whole treatment process has no waste gas emission in the whole process, and really achieves zero emission and no pollution.

Of course, the foregoing is only a preferred embodiment of the invention and should not be taken as limiting the scope of the embodiments of the invention. The present invention is not limited to the above examples, and equivalent changes and modifications made by those skilled in the art within the spirit and scope of the present invention should be construed as being included in the scope of the present invention.