阅读说明：本技术 一种基于固化剂gy620处理放射性有机溶剂的方法 (Method for treating radioactive organic solvent based on curing agent GY620 ) 是由 何辉 于婷 李峰峰 于 2021-07-01 设计创作，主要内容包括：本发明公开了一种基于固化剂GY620处理放射性有机溶剂的方法,包括以下步骤：S1、称取过量固化剂GY620,在搅拌条件下缓慢加入放射性有机溶剂；搅拌均匀后进行静置反应,反应完全后得到有机溶剂固化体；S2、在密闭的焚烧炉中对有机溶剂固化体进行焚烧操作,有机溶剂固化体转化为二氧化碳、水蒸气、NOx气体以及固体残渣；S3、使用尾气吸收设备对二氧化碳、水蒸气、NOx气体进行吸收处理操作；S4、将固体残渣进行封存处理操作。本发明通过将固化剂GY620应用于放射性有机溶剂的处理操作,可解决放射性有机废液难以运输及处理处置等难题,给放射性有机废液的处理工作带来了便利。(The invention discloses a method for treating a radioactive organic solvent based on a curing agent GY620, which comprises the following steps: s1, weighing excess curing agent GY620, and slowly adding a radioactive organic solvent under stirring; stirring uniformly, then carrying out standing reaction, and obtaining an organic solvent solidified body after complete reaction; s2, burning the organic solvent solidified body in a closed burning furnace, and converting the organic solvent solidified body into carbon dioxide, water vapor, NOx gas and solid residues; s3, absorbing carbon dioxide, water vapor and NOx gas by using tail gas absorption equipment; and S4, carrying out sealing treatment operation on the solid residue. According to the invention, the curing agent GY620 is applied to the treatment operation of the radioactive organic solvent, so that the problems of difficult transportation, treatment and disposal of the radioactive organic waste liquid and the like can be solved, and convenience is brought to the treatment work of the radioactive organic waste liquid.)

1. A method for treating radioactive organic solvent based on curing agent GY620 is characterized in that: the method comprises the following steps:

s1, weighing excess curing agent GY620, and slowly adding a radioactive organic solvent under stirring; stirring uniformly, then carrying out standing reaction, and obtaining an organic solvent solidified body after complete reaction;

s2, burning the organic solvent solidified body in a closed burning furnace, and converting the organic solvent solidified body into carbon dioxide, water vapor, NOx gas and solid residues;

s3, absorbing carbon dioxide, water vapor and NOx gas by using tail gas absorption equipment;

and S4, carrying out sealing treatment operation on the solid residue.

2. The method for treating a radioactive organic solvent based on the curing agent GY620 as claimed in claim 1, wherein: the mass ratio of the curing agent GY620 to the radioactive organic solvent in the step S1 is 1: 2-8.

3. The method of claim 2, wherein the method comprises the steps of: the stirring speed in the step S1 is 100-500 rpm/min, and the stirring time is 5-10 minutes.

4. The method of claim 3 for treating a radioactive organic solvent based on the curing agent GY620, wherein: the standing time in the step S1 is 10-30 minutes.

5. The method of claim 4, wherein the method comprises the steps of: in the step S2, the temperature in the incinerator is 1000-2000 ℃, and the time of the incineration operation is 1-2 hours.

6. The method of claim 5, wherein the method comprises the steps of: in step S3, the solid residue is sealed after being subjected to cement curing treatment.

7. The method of claim 6, wherein the method comprises the steps of: the concrete operation of the cement curing treatment is as follows: mixing the solid residue with cement and water, stirring uniformly, standing for solidification, and sealing for storage after the solid residue is solidified into a cement block.

8. The method of claim 7, wherein the method comprises the steps of: the mass ratio of the solid residues to cement to water is as follows: 1:10:10.

Technical Field

The invention relates to the field of radiation treatment, in particular to a method for treating a radioactive organic solvent based on a curing agent GY 620.

Background

The curing agent GY620 has large specific surface area, proper pore structure and surface structure, strong adsorption capacity and no chemical reaction with medium water and the like. The curing agent GY620 is mainly used for treating oily wastewater, is used as an absorbent of an organic phase in an aqueous phase, absorbs the organic phase on the surfaces of GY620 particles, and then performs chemical reaction to convert the organic phase into a solid compound, thereby effectively realizing the water-oil separation of aqueous-organic phase mixed waste liquid.

A large amount of radioactive organic solvents are generated in nuclear involved units to be treated, typically, radioactive waste engine oil generated in a nuclear power station, an organic phase mixture which is generated in the spent fuel treatment process and takes tributyl phosphate, kerosene and a radiation degradation product as main components, and liquid scintillation liquid which is generated in the nuclear medicine process and takes aromatic compounds as main components, wherein the radioactive organic solvents cannot be directly solidified as radioactive waste water, generally, organic matters are destroyed until the total amount of the organic matters is lost, and the liquid organic matters are converted into micromolecular inorganic matters and then are solidified by cement or glass; when liquid organic matters are converted into micromolecular inorganic matters through oxidation-reduction reaction, the prior art has an organic matter direct burning method and an organic matter supercritical water oxidation treatment method, the organic matter direct burning method has the defects of limited single treatment capacity, uncontrollable reaction rate and the like, and the risks of deflagration or explosion and the like exist; the supercritical water oxidation treatment process of the organic matters relates to high-temperature and high-pressure conditions, and the reaction is controllable but has the defects of high operation difficulty, easiness in explosion and the like.

Disclosure of Invention

The invention aims to solve the problems and provides a method for treating a radioactive organic solvent based on a curing agent GY620, which is simple to operate, quick and efficient.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a method for treating a radioactive organic solvent based on a curing agent GY620, comprising the following steps:

s1, weighing excess curing agent GY620, and slowly adding a radioactive organic solvent under stirring; stirring uniformly, then carrying out standing reaction, and obtaining an organic solvent solidified body after complete reaction;

s2, burning the organic solvent solidified body in a closed burning furnace, and converting the organic solvent solidified body into carbon dioxide, water vapor, NOx gas and solid residues;

s3, absorbing carbon dioxide, water vapor and NOx gas by using tail gas absorption equipment;

and S4, carrying out sealing treatment operation on the solid residue.

Further, the mass ratio of the curing agent GY620 to the radioactive organic solvent in the step S1 is 1: 2-8.

Further, the stirring speed in the step S1 is 100-500 rpm/min, and the stirring time is 5-10 minutes.

Further, the standing time in the step S1 is 10-30 minutes.

Further, in the step S2, the temperature in the incinerator is 1000 to 2000 ℃, and the time duration of the incineration operation is 1 to 2 hours.

Further, in step S3, the solid residue is sealed after being subjected to cement curing treatment.

Further, the concrete operation of the cement curing treatment is as follows: mixing the solid residue with cement and water, stirring uniformly, standing for solidification, and sealing for storage after the solid residue is solidified into a cement block.

Further, the mass ratio of the solid residues to cement to water is as follows: 1:10:10.

Compared with the prior art, the invention has the advantages and positive effects that:

according to the invention, the curing agent GY620 adsorbs the radioactive organic solvent, so that the radioactive organic solvent is cured, and the generated radioactive organic solvent cured body can be directly barreled and transported, thereby solving the problem that the radioactive organic waste liquid cannot be transported. Meanwhile, the radioactive organic solvent solidified body can be directly calcined to oxidize organic matters to micromolecular compounds at high temperature, the contact surface area is controllable due to the combustion of the curing agent in the combustion process, the reaction rate is controllable, and the reaction process does not involve high-temperature and high-pressure conditions, so that the danger degree of the combustion process is greatly reduced, the operation difficulty is reduced, and the operation safety is improved.

Compared with the original radioactive organic waste liquid, the waste form conversion is carried out on the incineration product, the volume to be treated is reduced by hundreds of times or even thousands of times, and the treatment cost and the disposal risk of the radioactive organic waste liquid are greatly reduced. By applying the curing agent GY620 to the treatment operation of the radioactive organic solvent, the problems that the radioactive organic waste liquid is difficult to transport, treat and dispose and the like can be solved, and convenience is brought to the treatment work of the radioactive organic waste liquid.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a block diagram of the framework of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived from the embodiments of the present invention by a person skilled in the art without any creative effort, should be included in the protection scope of the present invention.

As shown in FIG. 1, the invention discloses a method for treating a radioactive organic solvent based on a curing agent GY620, which comprises the following steps:

s1, weighing excessive curing agent GY620, wherein the curing agent GY620 can be purchased directly on the Internet, and http:// www.gysclkj.com/products/gy730l.html, https:// www.china.cn/jinshuqingxiji/3545719138.html is sold; slowly adding a radioactive organic solvent under the stirring condition, wherein the mass ratio of the curing agent GY620 to the radioactive organic solvent is 1: 2-8; stirring at a rotating speed of 100-500 rpm/min for 5-10 minutes, and standing for 10-30 minutes to obtain an organic solvent solidified body;

s2, carrying out incineration operation on the organic solvent solidified body in a closed incinerator, wherein the incineration temperature is 1000-2000 ℃, the incineration time is 1-2 hours, and under the incineration operation, the organic solvent solidified body is converted into carbon dioxide, water vapor, NOx gas and solid residues;

s3, absorbing carbon dioxide, water vapor and NOx gas by using tail gas absorption equipment;

s4, carrying out cement curing treatment on the solid residues and then sealing; concrete operation of cement solidification treatment is as follows: mixing the solid residues with cement and water, wherein the mass ratio of the solid residues to the cement to the water is as follows: 1:10: 10; stirring uniformly at a rotating speed of 100-500 rpm/min, standing for solidification, and sealing and storing after the solidification into cement blocks.

Example I treatment of organic waste liquid

1. Organic phase adsorption-solidification process

Weighing 100g of curing agent GY620, adding 2 times of radioactive organic waste liquid generated in the PUREX process under the stirring condition, wherein the main component of the radioactive organic waste liquid is 30% TBP/70% kerosene, the stirring speed is 100rpm/min, after the radioactive organic waste liquid is added, continuously stirring for 5 minutes, then pouring the mixture into a curing barrel, standing for 10 minutes, and when the mixture is completely cured, no liquid exists on the surface of the solid;

2. burning of the solidified body

Taking out the solidified body from the solidification barrel, controlling the mass of the solidified body, adding 50g of the solidified body each time, heating the incinerator to 1000 ℃, fully combusting the solidified body for 1 hour, and weighing 5g of the total mass of the incineration residues.

3. Solidification treatment of residue

5g of incineration residue generated by incineration was stirred in the following ratio of 1:10, adding cement, adding water with the same mass as the cement at the same time, stirring at the speed of 100rpm/min until the cement is completely solidified, measuring the radioactivity of the solidified body, and properly treating the solidified body according to the radioactive waste disposal requirement.

EXAMPLE two Radioactive scintillant treatment

1. Organic phase adsorption-solidification process

Weighing 500 g of curing agent GY620, adding 8 times of radioactive scintillation liquid under the stirring condition, wherein the main component of the radioactive scintillation liquid is an aromatic compound, stirring at the rotating speed of 500rpm/min, continuously stirring for 10 minutes after the radioactive scintillation liquid is added, then pouring into a curing barrel, standing for 30 minutes, and completely curing;

2. burning of the solidified body

Taking out the solidified body from the solidification barrel, controlling the mass of the solidified body, adding 100g of the solidified body each time, heating the incinerator to 1500 ℃, fully burning the solidified body for 2 hours, and weighing 50g of the incineration residues.

3. Solidification treatment of residue

50g of incineration residue generated by incineration was stirred in the following ratio of 1:10, adding cement, adding water with the same mass as the cement at the same time, stirring at the speed of 500rpm/min until the cement is completely solidified, measuring the radioactivity of the solidified body, and properly treating the solidified body according to the radioactive waste disposal requirement.

According to the invention, the curing agent GY620 adsorbs the radioactive organic solvent, so that the radioactive organic solvent is cured, and the generated radioactive organic solvent cured body can be directly barreled and transported, thereby solving the problem that the radioactive organic waste liquid cannot be transported. Meanwhile, the radioactive organic solvent solidified body can be directly calcined to oxidize organic matters to micromolecular compounds at high temperature, the contact surface area is controllable due to the combustion of the curing agent in the combustion process, the reaction rate is controllable, and the reaction process does not involve high-temperature and high-pressure conditions, so that the danger degree of the combustion process is greatly reduced, the operation difficulty is reduced, and the operation safety is improved.

Compared with the original radioactive organic waste liquid, the waste form conversion is carried out on the incineration product, the volume to be treated is reduced by hundreds of times or even thousands of times, and the treatment cost and the disposal risk of the radioactive organic waste liquid are greatly reduced. By applying the curing agent GY620 to the treatment operation of the radioactive organic solvent, the problems that the radioactive organic waste liquid is difficult to transport, treat and dispose and the like can be solved, and convenience is brought to the treatment work of the radioactive organic waste liquid.